Kuv tsim cov nplaum polyurethane 2K rau ntoo. PF-040 pab tau li cas?
PF-040 (OH = 450, f = 3) ua haujlwm ua tus neeg sawv cev sib txuas, ua rau muaj kev sib koom ua ke thiab tiv taus cua sov; siv 10–30% ntawm tag nrho cov polyol.

Kuv lub rwb thaiv tsev ua npuas dej tsis ruaj khov. PF-040 puas tuaj yeem txhim kho nws tau?
Yog lawm, nws cov kev ua haujlwm siab (3) thiab MW nruab nrab ua rau kom muaj qhov sib txuas ntawm qhov sib txuas, txo qhov ntsws; kev siv ib txwm muaj 5–15 phr.

Qhov zoo ntawm PF-040 dua li tus qauv diol hauv cov nplaum rau cov qauv yog dab tsi?
Nws muab lub zog shear siab dua thiab kev tiv thaiv creep zoo dua vim yog cov qauv trifunctional.

Kuv xav tau txo qhov viscosity ntawm cov nplaum uas tau ntim lawm. PF-040 puas pab tau?
PF-040 muaj viscosity qis heev (360 mPa · s), txhim kho qhov ntub dej ntawm cov khoom sau yam tsis txo qhov kev ua haujlwm.

Kuv cov PU sealant tsis muaj zog ntsuab. Yuav siv PF-040 li cas?
Hloov 5–10% ntawm diol nrog PF-040 kom nce lub zog pib tom qab kho.

Puas yog PF-040 haum rau cov nplaum ib-feem uas muaj cov dej noo kho tau?
Yog, tab sis vim nws yog trifunctional, nws yuav ua rau muaj kev sib txuas ntau ntxiv; siv rau qib qis (2–5%) kom tsis txhob muaj kev sib txuas ntau dhau.

Kuv yuav tsum siv cov isocyanate index twg nrog PF-040?
Rau cov nplaum, ntsuas 105–110 kom ntseeg tau tias muaj kev cuam tshuam tag nrho ntawm txhua pawg OH.

Kuv cov nplaum yuav tsis ua haujlwm thaum kub heev (80°C). PF-040 puas tuaj yeem ua kom tsis txhob kub dhau?
Yog, cov qauv trifunctional ua rau qhov kub hloov pauv iav nce siab; hloov 20% ntawm diol nrog PF-040.

PF-040 puas muaj feem cuam tshuam rau lub sijhawm qhib?
Nws ua kom lub sijhawm qhib luv me ntsis vim muaj kev ua haujlwm ntau dua; kho cov catalyst kom haum.

Puas siv tau PF-040 rau hauv polyurethane grouts rau kev txhaj tshuaj tawg?
Yog, nws cov viscosity qis thiab reactivity siab ua rau nws tsim nyog rau kev txhaj tshuaj grouts; siv nrog cov catalyst ceev.

Kuv tsim cov tshuaj pleev hauv pem teb polyurethane uas tiv taus kev sib txhuam siab. PF-450 ua haujlwm li cas?
PF-450 (OH = 380, MW = 450, f = 3) muab cov yeeb yaj kiab tawv, sib txuas nrog kev tiv thaiv zoo heev; kev siv ib txwm muaj 40–60 phr.

Kuv cov khoom siv casting muaj zog compressive tsawg. PF-450 puas tuaj yeem txhim kho nws?
Yog, hloov diol nrog PF-450 kom nce qhov ceev ntawm crosslink; lub zog tuaj yeem nce ntxiv 20–30%.

Qhov zoo ntawm PF-450 dua li PF-040 hauv kev pleev xim yog dab tsi?
MW siab dua (450) muab kev ywj pheej zoo dua thaum tswj hwm qhov nyuaj; PF-040 yog qhov tawg yooj yim dua.

Kuv tsim cov nplaum PU ob yam khoom siv rau kev sib txuas hlau. Qib twg ntawm PF-450 yog qhov pom zoo?
20–40% ntawm tag nrho cov polyol; nws muab kev nplaum zoo thiab tiv taus corrosion.

Kuv lub hauv pem teb tsis tiv taus tshuaj lom neeg txaus. PF-450 yuav pab tau li cas?
Kev sib txuas ntxiv ntawm PF-450 ua rau kev tiv taus cov kuab tshuaj thiab cov kua qaub nce ntxiv.

PF-450 puas sib xws nrog MDI prepolymers?
Yog, nws sib xws heev; preheating rau 40 ° C tej zaum yuav txo qhov sib tov viscosity.

Lub sijhawm siv roj teeb feem ntau yog dab tsi thaum siv PF-450 nrog cov tshuaj amine catalyst?
Ntawm 25 ° C, lub neej ntawm lub lauj kaub yog 15-30 feeb nyob ntawm qib catalyst.

Kuv lub txheej txheej muaj qhov sib txhuam ntawm qhov chaw vim tias nws tsis kho tau zoo. PF-450 puas daws tau qhov no?
Nws cov kev ua haujlwm siab dua ua kom qhov chaw kho tau zoo; xyuas kom meej tias cov isocyanate index yog ≥105.

Puas siv tau PF-450 rau hauv cov polyurethane screed rau cov plag tsev industrial?
Yog, nws muab cov dej ntws zoo thiab kev txhim kho sai; siv nrog cov tshuaj defoamer.

PF-450 puas ua rau muaj xim daj ntawm cov txheej txheem ntshiab?
Tsis pub ntau tshaj li tus qauv polyether polyols; siv aliphatic isocyanates rau cov kab ke tsis daj.

Kuv ua cov polyurethane elastomer castings nrog qhov nyuaj nruab nrab (Shore 80A). Puas yog PF-1050 haum?
Yog, PF-1050 (MW = 1000, f = 3) muab qhov sib npaug zoo ntawm lub zog thiab elasticity; siv feem ntau 30–70%.

Kuv cov txheej hauv pem teb tsis khov thaum huab cua txias. PF-1050 yuav ua li cas thiaj txhim kho tau qhov yooj ywm?
Hloov ib feem ntawm cov polyol luv dua (piv txwv li, PF-450) nrog PF-1050 kom txo Tg thiab ua kom muaj kev ywj pheej ntawm qhov kub qis.

Lub zog tensile feem ntau ntawm cov nplaum uas tsim los ntawm PF-1050 yog dab tsi?
Nrog MDI thiab stoichiometry kom raug, lub zog tensile ntawm 5-8 MPa tuaj yeem ua tiav.

Kuv cov khoom siv casting muaj cov pa npuas. PF-1050 puas muaj cua tso tawm zoo?
Nws qhov viscosity nruab nrab (250 mPa · s) tso cai rau kev tshem tawm zoo; kev siv lub tshuab nqus tsev degassing raug pom zoo.

Puas siv tau PF-1050 rau hauv cov polyurethane sealants rau kev sib txuas ntawm kev tsim kho?
Yog, nws muab kev ntev zoo (300–500%) thiab kev rov zoo; siv nrog lub diol saw extender.

Qhov zoo ntawm PF-1050 dua li diol ntawm MW zoo sib xws yog dab tsi?
Kev ua haujlwm siab dua muab lub zog tsim kua muag zoo dua thiab tiv taus cua sov.

Kuv lub txheej tsis zoo rau kev cuam tshuam. Yuav ua li cas thiaj txhim kho tau nrog PF-1050?
Ua kom PF-1050 piv rau 60–80% ntawm tag nrho cov polyol; cov ntu ntev dua uas yoog tau nqus tau qhov cuam tshuam.

Puas yog PF-1050 haum rau cov khoom siv polyurethane potting rau cov khoom siv hluav taws xob?
Yog lawm, nws cov viscosity qis thiab cov khoom siv hluav taws xob zoo ua rau nws tsim nyog.

PF-1050 piv rau Voranol CP 1050 li cas?
Hloov ncaj qha; cov lus qhia tib yam.

Kuv cov nplaum tsis ua haujlwm thaum muaj huab cua ntub. PF-1050 puas pab tau?
Tsis yog ncaj qha; siv cov tshuaj ntxiv uas tshem cov dej noo lossis ua kom cov isocyanate index nce ntxiv.

Kuv tsim cov tshuaj polyurethane sealant uas muaj zog heev thiab ntev tau zoo. Vim li cas ho xaiv PF-2080?
PF-2080 (MW = 8000, f = 2) muab cov modulus qis, elongation siab (> 600%), thiab rov zoo heev.

Kuv cov nplaum ob yam rau kev ntim khoom yooj ywm tsis muaj zog tev tawm. PF-2080 puas tuaj yeem txhim kho nws?
Yog, nws cov saw ntev uas yoog tau ua rau lub zog tev tawv ntxiv; siv 30–50% ntawm tag nrho cov polyol.

Qhov viscosity ntawm PF-2080 (3000 mPa·s) yog dab tsi. Yuav ua li cas thiaj tswj tau nws?
Ua kom sov rau 40–50 ° C kom txo qhov viscosity kom yooj yim sib tov.

Kuv cov khoom siv elastomer tsis zoo tiv taus kua muag. PF-2080 puas pab tau?
Ua ib qho diol, nws yuav tsis ua rau lub zog tsim kua muag ntau; ua ke nrog cov polyol trifunctional.

Puas yog PF-2080 haum rau cov khoom siv sealant uas kho tau dej noo ib yam?
Yog lawm, nws cov MW siab thiab OH tus lej qis (14) muab kev ruaj khov zoo thiab qis shrinkage.

Kuv cov sealant tsis lo rau cov pob zeb. PF-2080 puas tuaj yeem txhim kho nws?
Tsis yog ncaj qha; siv tus neeg txhawb nqa kev nplaum silane. PF-2080 muab kev ywj pheej ntau.

Lub PF-2080 uas pom zoo kom siv rau elastomer yog dab tsi?
1,4-Butanediol lossis MOCA; tus piv ib txwm NCO/OH = 1.05.

Kuv cov nplaum muaj ntau dhau thaum lub sijhawm thauj khoom. Yuav kho li cas?
Sib tov PF-2080 nrog cov polyol ua haujlwm siab dua xws li PF-450 (80/20 piv).

Puas siv tau PF-2080 rau hauv cov nplaum polyurethane kub yaj (HMPUR)?
Yog lawm, nws cov khoom ib nrab khov kho ntawm chav tsev kub pab tsim kom muaj zog ntsuab.

Puas yog PF-2080 crystallize ntawm qhov kub qis?
Tsis yog, nws yog ib qho amorphous polyether; tseem ua kua tab sis viscous.

Kuv xav tau cov tshuaj sealant mos mos, qis modulus rau cov pob qij txha nthuav dav. PF-2120 puas zoo tagnrho?
Yog, PF-2120 (MW = 12000, OH = 9.5) muab cov modulus qis heev thiab elongation siab (> 800%).

Kuv cov polyurethane elastomer tsis muaj kev ywj pheej thaum kub tsawg. PF-2120 yuav pab tau li cas?
Nws cov saw ntev heev, yoog tau qis dua Tg mus rau qis dua -60 ° C, zoo heev rau kev siv huab cua txias.

Qhov txawv ntawm PF-2080 thiab PF-2120 yog dab tsi?
PF-2120 muaj MW siab dua thiab OH tus lej qis dua, muab cov khoom mos dua thiab ntau dua elastic.

Kuv cov nplaum ob yam khoom siv rau kev sib txuas roj hmab xav tau lub zog tev tawm siab. Puas yog PF-2120 haum?
Yog, tab sis sib tov nrog me ntsis ntawm crosslinker kom tswj tau kev sib koom ua ke.

Kuv yuav ua li cas thiaj li ua tiav qhov shore A hardness ntawm 40-50 hauv casting elastomer?
Siv PF-2120 ua lub polyol tseem ceeb (80%) nrog rau diol saw extender thiab MDI.

Puas siv tau PF-2120 rau hauv ib qho khoom sib txuas nrog silane termination?
Yog, nws sib xws nrog silane-terminated polyurethanes (SPUR).

Kuv cov sealant tsis zoo tom qab nias. Yuav ua li cas thiaj txhim kho tau?
Ntxiv 5–10% ntawm cov polyol trifunctional xws li PF-1050 kom ua rau muaj kev sib txuas me ntsis.

Lub txee lub neej ntawm PF-2120 hauv lub nruas kaw yog dab tsi?
12 lub hlis thaum khaws cia qhuav thiab nyob rau hauv nitrogen.

Puas yog PF-2120 xav tau kev tuav tshwj xeeb vim nws muaj viscosity siab?
Yog, preheat rau 50–60°C rau kev twj; nws yog ib qho kua tuab heev.

PF-2120 puas sib xws nrog cov plasticizers zoo li DINP?
Yog, tab sis yuav tsum tau sim qhov sib xws; feem ntau siv yam tsis muaj plasticizer vim yog modulus qis.

Kuv tsim cov ua npuas ncauj slabstock uas yooj ywm nrog qhov ceev tsawg heev (14 kg/m³). PF-3500 pab tau li cas?
PF-3500 (OH=35, f=3, EO/PO) ua haujlwm ua lub cell qhib, tiv thaiv kev ua npuas ncauj ntsws thiab txhim kho kev ua pa.

Kuv lub ua npuas dej viscoelastic (memory) qeeb qeeb rov qab los. PF-3500 puas tuaj yeem hloov lub sijhawm rov qab los tau?
Yog lawm, ntxiv 3–8 phr PF-3500 txo lub sijhawm rov zoo (ua rau ua npuas dej rov zoo qeeb dua) los ntawm kev qhib cov hlwb.

Lub luag haujlwm ntawm PF-3500 hauv hypersoft ua npuas ncauj yog dab tsi?
Nws ua rau cov ua npuas ncauj mos thiab ua rau huab cua ntws ntau ntxiv, tshem tawm cov hlwb nruj.

Kuv lub ua npuas ncauj muaj qib siab ntawm kev ntsws tom qab demolding. Kuv yuav tsum ntxiv PF-3500 ntau npaum li cas?
2–5 phr (raws li tag nrho cov polyol) feem ntau daws qhov shrinkage yam tsis cuam tshuam rau qhov nyuaj ntau dhau.

Puas siv tau PF-3500 rau hauv cov ua npuas dej uas muaj zog heev (HR)?
Yog, ua lub cell qhib kom zoo dua qub thiab txo cov qhov tsis zoo ntawm qhov chaw.

PF-3500 puas sib xws nrog TDI thiab MDI systems?
Yog, nws ua haujlwm zoo rau ob qho tib si, tab sis tshwj xeeb tshaj yog nyob rau hauv TDI-raws li flexible foams.

Kuv cov mis ua npuas ncauj tsis ruaj khov thaum nce. PF-3500 puas yuav ua rau nws hnyav dua?
Ntau dhau (> 10 phr) tuaj yeem ua rau tawg; siv 3–5 phr rau qhov qhib cell zoo tshaj plaws yam tsis muaj kev ruaj khov.

PF-3500 puas cuam tshuam rau qhov tawv ntawm ua npuas ncauj?
Yog, nws me ntsis txo qhov nyuaj vim muaj ntau lub hlwb qhib; them rov qab nrog cov ntsuas isocyanate siab dua.

Qhov zoo ntawm PF-3500 dua li cov tshuab qhib cell ib txwm muaj xws li polybutadiene yog dab tsi?
Nws yog tag nrho cov tshuaj tiv thaiv thiab tsis migrate lossis ua rau nto blooming.

Puas siv tau PF-3500 ua cov ua npuas ncauj rau cov rooj zaum hauv tsheb?
Yog, nws ua rau kom xis nyob dua thiab txo qhov xav tau kev sib tsoo tshuab.

Kuv ua cov MDI hloov kho (kua MDI) rau cov prepolymers. PF-010 pab tau li cas?
PF-010 (OH = 22, f = 3, MW = 8000) tshuaj tiv thaiv nrog MDI los tsim cov kua MDI ruaj khov, tsis muaj viscosity nrog lub sijhawm ntev.

Kuv cov txheej polyurethane hydrophilic muaj qhov tsis zoo ntawm dej o. PF-010 puas tuaj yeem txhim kho nws?
Yog, nws cov qauv nplua nuj EO ua rau hydrophilicity nce; siv 20–50% ntawm tag nrho cov polyol.

Cov ntsiab lus NCO ib txwm muaj rau cov prepolymer ua nrog PF-010 yog dab tsi?
8–12% NCO rau elastomers; kho raws li qhov nyuaj xav tau.

Kuv xav tau cov polyurethane uas yaj tau hauv dej rau cov txheej textile. Puas yog PF-010 haum?
Yog, nws cov ntu hydrophilic EO tso cai rau tus kheej-emulsification hauv dej.

Kuv cov hydrogel formulation xav tau kev nqus dej ntau. Yuav siv PF-010 li cas?
Ua tus crosslinker (f = 3) nrog PEG diols los tsim kom muaj lub network swellable.

Puas siv tau PF-010 rau hauv cov polyurethane sealants los txhim kho kev nplaum rau cov chaw ntub dej?
Yog lawm, nws cov hydrophilicity pab tshem tawm cov dej noo ntawm qhov chaw, txhim kho kev nplaum.

Qhov zoo ntawm PF-010 dua li Voranol IP 010 yog dab tsi?
Hloov ncaj qha; kev ua tau zoo ib yam.

Kuv cov prepolymer muaj viscosity siab. Kuv yuav ua li cas thiaj txo tau nws?
Siv PF-010 ib leeg xwb los yog sib tov nrog cov diol uas tsis muaj viscosity; preheat rau 60°C.

PF-010 puas ua rau hydrolysis hauv polyurethane?
Cov polyols nplua nuj EO tuaj yeem nyiam dej; xyuas kom qhuav zoo thiab siv cov isocyanates hydrolytically ruaj khov.

PF-010 puas haum rau polyurethane ua npuas dej uas nqus dej tau zoo (piv txwv li, rau cov phuam da dej)?
Yog, tab sis ua ke nrog lub crosslinker ua haujlwm siab kom tswj tau cov duab.

Kuv tsim cov hauv qab khau polyurethane uas tsis muaj zog rhuav. PF-2802 yuav pab tau li cas?
PF-2802 yog ib qho diol uas muaj zog heev (OH = 28, MW = 4000, EO / PO) uas ua rau lub zog tsim kua muag ntau ntxiv los ntawm kev txhim kho kev sib cais theem; siv 30–50%.

"Muaj kev cuam tshuam ntau" txhais li cas rau PF-2802?
Nws muaj cov hau kawg ntawm EO, ua rau cov pab pawg hydroxyl thawj zaug (~ 80%), uas teb sai dua nrog isocyanates.

Kuv lub khau hauv qab tau siv sijhawm ntev heev los rhuav tshem (5 feeb). PF-2802 puas tuaj yeem ua kom luv dua?
Yog lawm, nws qhov kev ua haujlwm siab ua rau lub sijhawm demold txo qis mus rau 2-3 feeb ntawm 50 ° C.

PF-2802 puas sib xws nrog MDI thiab TDI khau hauv qab systems?
Ua haujlwm zoo tshaj plaws nrog MDI; muab kev tiv thaiv kev puas tsuaj zoo heev.

Lub PF-2802 uas pom zoo kom siv lub tshuab txuas saw hlau yog dab tsi?
1,4-Butanediol los yog ethylene glycol; tus qauv NCO/OH = 1.02–1.05.

Kuv qhov elastomer muaj lub zog tensile tsis zoo. PF-2802 puas tuaj yeem txhim kho nws?
Yog lawm, nws qhov hnyav molecular siab thiab OH thawj zaug ua rau muaj kev sib raug zoo ntawm ntu nyuaj, ua rau lub zog tensile nce mus txog 30–40 MPa.

PF-2802 piv rau Voranol EP 1900 li cas?
Hloov ncaj qha; cov yam ntxwv ib txwm muaj.

Puas siv tau PF-2802 rau hauv cov polyurethane sealants kom kho sai?
Yog, tab sis nws yuav ua rau lub sijhawm qhib luv dua; siv nrog cov catalyst latent.

Kuv cov nplaum xav tau kev nplaum siab dua thaum pib (lub zog ntsuab). PF-2802 puas yuav pab tau?
Yog, vim yog qhov ua rau isocyanate tshwm sim sai dua, lub zog ntsuab tsim tau hauv ob peb feeb xwb.

PF-2802 puas xav tau qhov chaw cia khoom tshwj xeeb?
Tsis yog, tab sis khaws cia kom qhuav (<0.05% dej) kom tsis txhob muaj kev phiv.

Kuv tsim cov khoom sib xyaw (piv txwv li, fiberglass reinforced polyurethane). Vim li cas ho xaiv Y-950?
Y-950 (OH=950, MW=180, f=3) muab qhov ceev ntawm qhov sib txuas siab heev, muab lub zog kho tshuab siab thiab tiv taus cua sov.

Kuv cov khoom siv casting rau cov insulators hluav taws xob muaj lub zog flexural qis. Y-950 yuav ua li cas thiaj txhim kho nws tau?
Siv Y-950 ua cov polyol tseem ceeb (60–80%); lub zog flexural tuaj yeem tshaj 100 MPa.

Qhov viscosity ntawm Y-950 (6750 mPa·s) yog dab tsi? Yuav ua li cas thiaj ua tiav?
Ua kom sov rau 50–60°C; nws nplaum heev tab sis tseem ceeb rau cov khoom muaj zog heev.

Puas yog Y-950 haum rau cov khoom siv polyurethane uas xav tau kev tawv heev (Shore D >80)?
Yog, ua ke nrog MDI thiab cov diol saw hlau luv luv.

Kuv cov khoom sib xyaw ua ke muaj qhov kub tsis zoo (HDT). Y-950 puas tuaj yeem tsa nws?
Yog, HDT tuaj yeem ncav cuag 150 ° C nrog cov mis tshuaj kom raug.

Puas yog Y-950 ua rau brittleness?
Nws ua rau muaj zog ntxiv tab sis kuj ua rau brittleness; sib tov nrog ib qho diol uas yooj ywm rau kev tawv.

Puas siv tau Y-950 rau hauv cov nplaum polyurethane rau kev sib txuas ntawm cov hlau?
Yog, nws muab lub zog siab heev ntawm lub voj voog shear (> 20 MPa).

Cov ntsuas isocyanate uas pom zoo rau Y-950 yog dab tsi?
105–110 kom ntseeg tau tias kho tau tag nrho; cov ntsuas siab ua rau muaj kev sib txuas ua rau muaj kev sib tshuam ntau ntxiv.

Puas yog Y-950 sib xws nrog epoxy resins rau cov kab ke sib xyaw?
Txwv; tej zaum yuav muaj kev sib cais theem. Sim ua ntej.

Kuv cov txheej txheem molding xav tau lub lauj kaub ntev. Yuav ua li cas thiaj ua tiav nrog Y-950?
Siv cov tshuaj catalyst uas qeeb qeeb thiab ua kom qhov kub sib xyaw qis (20–25 ° C).

Kuv xav tau polyol rau cov polyurethane castings uas muaj zog heev nrog qhov viscosity nruab nrab. Puas yog PF-3075 yog qhov kev xaiv zoo?
PF-3075 (OH = 750, MW = 220, f = 3) muab kev sib txuas siab, viscosity qis dua Y-950 (5750 vs 6750), ua tiav yooj yim dua.

Kuv cov nplaum rau cov qauv tsis ua haujlwm thaum muaj kev sib tsoo. PF-3075 puas tuaj yeem txhim kho kev tiv thaiv kev sib tsoo?
Yog lawm, nws cov trimethylolpropane backbone muab kev ruaj khov; sib xyaw 50/50 nrog diol uas yoog tau.

Qhov nyuaj ntawm PF-3075 feem ntau ua tau yog dab tsi?
Ntug dej D 70–85 nyob ntawm isocyanate thiab saw hlau txuas.

Kuv lub txheej txheej xav tau kev tiv taus cov kuab tshuaj ntau dua. Yuav siv PF-3075 li cas?
Hloov 20–30% ntawm cov polyol tseem ceeb nrog PF-3075 kom nce qhov ceev ntawm crosslink.

Puas yog PF-3075 haum rau polyurethane potting rau cov khoom siv hluav taws xob?
Yog, nws muab cov thermal conductivity zoo thiab qis shrinkage.

PF-3075 piv rau PF-450 li cas?
PF-3075 muaj OH siab dua (750 vs 380) thiab MW qis dua, muab cov khoom nyuaj dua thiab tawg yooj yim dua.

Kuv cov khoom siv sib xyaw xav tau kev rhuav tshem sai dua. PF-3075 puas tuaj yeem kho tau sai dua?
Yog, nws tus lej OH siab ua rau muaj kev cuam tshuam ntau ntxiv; lub sijhawm demold tuaj yeem yog 10-15 feeb ntawm 80 ° C.

Lub tshuab txuas saw twg ua haujlwm zoo tshaj plaws nrog PF-3075?
Cov diol luv luv xws li 1,4-BDO lossis EDO; tsis txhob siv cov saw hlau ntev.

PF-3075 puas ua rau muaj teeb meem exotherm hauv cov castings loj?
Yog, siab heev; siv qeeb qeeb ntxiv lossis sib tov ntau kauj ruam.

Puas siv tau PF-3075 rau hauv cov nplaum polyurethane laminating?
Yog, rau cov laminates tawv (piv txwv li, cov vaj huam sib luag sandwich-aluminium-foam).

Kuv tsim cov ua npuas ncauj uas muaj zog heev (HR) rau cov txaj pw. PF-628 ua rau kom xis nyob li cas?
PF-628 (OH=28, f=6, MW=12000) muab kev rov qab zoo (70–80%) thiab kev txhawb nqa zoo heev.

Kuv lub hnab looj tes ua los ntawm PU uas zoo li roj hmab tsis muaj zog "dhia" zoo li roj hmab ntuj. PF-628 puas pab tau?
Yog lawm, nws txoj kev ua haujlwm siab thiab MW siab tsim cov tes hauj lwm ywj pheej heev, ua raws li qhov xav ntawm latex.

Qib siv PF-628 li cas hauv HR ua npuas ncauj?
10–30% ntawm tag nrho cov polyol; ntau dhau yuav ua rau ua npuas dej tawg vim yog viscosity siab.

Kuv lub ua npuas ncauj tsis ruaj khov (poob qhov siab tom qab nias ntau zaus). PF-628 yuav ua li cas thiaj txhim kho nws tau?
Nws cov qauv ua haujlwm rau rau qib ua rau muaj kev ywj pheej thiab txo cov teeb tsa compression mus tas li.

PF-628 puas sib xws nrog cov khoom siv ntxiv rau HR ua npuas ncauj (piv txwv li, DEOA, silicone)?
Yog, sib xws tag nrho; ua ntej cua sov rau 30°C kom yooj yim sib tov.

Qhov zoo ntawm PF-628 dua li peb-functional polyol ntawm MW zoo sib xws yog dab tsi?
Kev ua haujlwm siab dua muab kev thauj khoom zoo dua thiab rov qab tau.

Kuv lub ua npuas dej tsis dhau qhov kev sim rov qab los ntawm lub pob (xav tau >65%). PF-628 puas tuaj yeem ua tiav 70%?
Yog, ntawm 20-30 phr, rebound tuaj yeem ncav cuag 70-75%.

PF-628 puas ua rau cov npuas dej ntau ntxiv?
Tsis yog, tab sis nws yuav xav tau dej ntau dua lossis tus neeg sawv cev kom tswj tau qhov ceev ntawm lub hom phiaj vim muaj viscosity ntau dua.

Puas siv tau PF-628 ua npuas ncauj rau cov rooj zaum hauv tsheb?
Yog, nws ua rau kev caij tsheb xis dua thiab txo qhov qaug zog.

Lub sijhawm txee ntawm PF-628 yog dab tsi?
6 lub hlis nyob rau hauv lub nruas kaw; nws yog viscous tab sis ruaj khov.

Kuv ua cov ua npuas polyurethane tawv rau kev rwb thaiv tsev yeeb nkab thiab xav tau cov polyol uas ua haujlwm sai. Vim li cas PF-800?
PF-800 (OH = 800, f = 4, aromatic amine-based) yog auto-catalytic, txo qhov xav tau rau cov amine catalysts muaj zog.

Kuv cov nplaum rau cov khoom sib xyaw ua ke xav tau lub zog ntsuab sai. PF-800 tuaj yeem pab li cas?
Nws muaj kev ua haujlwm siab thiab nws tus kheej-catalytic xwm tso cai rau kev kho ntawm chav tsev kub hauv feeb.

"AFFA" txhais li cas hauv PF-800?
Aromatic amine-based polyol (piv txwv li, TDA lossis MDA pib), muab cov haujlwm catalytic inherent.

Kuv cov ua npuas ncauj tawv tsis lo rau hlau. PF-800 puas tuaj yeem txhim kho kev lo?
Yog lawm, cov pab pawg aromatic amine txhim kho qhov ntub dej ntawm qhov chaw thiab kev sib txuas tshuaj lom neeg.

Tus nqi isocyanate index rau PF-800 hauv cov ua npuas ncauj yog dab tsi?
120–150 rau PUR; 250–350 rau PIR.

PF-800 puas ua rau muaj xim av hauv cov ua npuas ncauj?
Cov tshuaj aromatic amine polyols yuav ua rau daj; tsis pom zoo rau cov ua npuas xim dawb.

Kuv lub tshuab casting rau cov khoom siv hluav taws xob xav tau kev nqus dej tsawg. Puas yog PF-800 haum?
Yog lawm, nws lub pob txha caj qaum tawv txo qhov kev nqus dej piv rau polyether diols.

Puas siv tau PF-800 rau hauv cov tshuaj tsuag ua npuas ncauj rau ru tsev?
Yog, nws cov tshuaj tiv thaiv sai txo qhov sagging ntawm cov nto ntsug.

Qhov viscosity ntawm PF-800 (17000 mPa·s) yog dab tsi. Yuav ua li cas thiaj tswj tau?
Ua kom sov rau 60°C; siv cov twj tso kua mis iav.

PF-800 puas sib xws nrog cov neeg sawv cev pentane?
Yog, tab sis vim muaj polarity siab, tej zaum yuav xav tau cov co-solvent zoo li surfactant.

Kuv tsim cov vaj huam sib luag PIR laminate tas mus li rau kev rwb thaiv tsev. PF-1380 puas haum?
PF-1380 (sucrose-based, OH=280, f=7, MW=1380) muab kev tiv thaiv hluav taws zoo heev thiab kev ruaj khov ntawm qhov ntev.

Kuv cov ua npuas dej ruaj khov rau kev rwb thaiv tsev yeeb nkab muaj cov qauv tsis zoo. PF-1380 yuav ua li cas thiaj txhim kho nws tau?
Nws cov kev ua haujlwm siab (7) tsim cov hlwb zoo, kaw, txo cov thermal conductivity.

Qhov zoo ntawm PF-1380 dua li glycerol-based polyol hauv cov ua npuas ncauj yog dab tsi?
Qhov siab dua ntawm qhov sib txuas ua rau muaj kev tiv thaiv cua sov zoo dua thiab txo qis friability.

Kuv lub vaj huam sib luag ua npuas ncauj tsis muaj zog compressive. PF-1380 puas tuaj yeem ua kom nws nce ntxiv?
Yog, hloov 30–50% ntawm cov polyol uas ua haujlwm qis dua; lub zog compressive tuaj yeem ob npaug.

PF-1380 puas sib xws nrog cov neeg sawv cev hydrocarbon blowing (cyclopentane)?
Yog, tab sis vim muaj viscosity siab, ua ntej sib xyaw nrog surfactant.

Cov dej hauv PF-1380 feem ntau yog dab tsi (≤0.15%)? Nws cuam tshuam li cas rau cov ua npuas ncauj?
Dej ua rau isocyanate sib xyaw ua ke los tsim CO₂; khaws cia qis dua 0.15% kom tsis txhob muaj kev hloov pauv ntawm qhov ceev.

Kuv cov tshuaj tsuag ua npuas ncauj tsis lo rau hlau. PF-1380 puas pab tau?
Nws cov hydroxyl density siab ua rau kom ntub dua; siv cov silane adhesion promoter kom tau txiaj ntsig zoo tshaj plaws.

Puas yog PF-1380 ua rau muaj kev kub ntxhov siab hauv cov ntu tuab?
Yog, vim muaj kev ua haujlwm siab; siv rau hauv cov laminates nyias lossis nrog cov catalysts exotherm qis.

Puas siv tau PF-1380 rau hauv cov khoom rwb thaiv tsev rau lub tub yees uas muab nchuav rau hauv qhov chaw?
Yog, nws muab kev ntws zoo heev thiab k-factor qis.

PF-1380 piv rau Voranol 280 li cas?
Hloov ncaj qha; cov lus qhia tib yam.

Kuv xav tau ib lub ua npuas ncauj ruaj khov uas ua haujlwm tau zoo thiab tiv taus hluav taws zoo heev (Chav Kawm B1). Vim li cas ho siv PF-585?
PF-585 (novolac polyol) muaj cov ntxhiab tsw qab uas ua rau kub hnyiab thaum hluav taws, txo cov nplaim taws kis mus.

Kuv lub vaj huam sib luag PIR tas mus li muaj pa luam yeeb ntau dhau. PF-585 puas tuaj yeem txo cov pa luam yeeb?
Yog, novolac polyols txo qis kev tsim pa luam yeeb piv rau sucrose polyols.

Qhov viscosity feem ntau (12000 mPa·s) ntawm PF-585 yog dab tsi. Yuav ua li cas thiaj ua tiav?
Ua kom sov rau 60–70°C; siv cov taub hau sib tov uas tau ua kom sov.

PF-585 puas sib xws nrog cov catalysts trimerization txheem (K15, K2097)?
Yog, tab sis kho cov catalyst qib siab dua vim yog acidity ntawm novolac.

Kuv lub ua npuas dej tsis ruaj khov tom qab kub laus (70°C). PF-585 puas tuaj yeem txhim kho nws?
Yog lawm, nws cov ntsiab lus aromatic siab muab kev tiv taus cua sov zoo heev txog li 180 ° C.

Tus nqi isocyanate index uas pom zoo rau PF-585 hauv PIR ua npuas ncauj yog dab tsi?
300–400; qhov ntsuas siab dua txhim kho kev ua haujlwm hluav taws.

PF-585 puas ua rau xeb ntawm cov hlau ntsej muag?
Tsis yog, yog tias tsim tau zoo; tus lej acid seem tsawg.

Kuv cov tshuaj tsuag ua npuas dej rau kev siv hauv dej hiav txwv xav tau kev nqus dej tsawg. Puas yog PF-585 haum?
Yog lawm, nws cov qauv hydrophobic aromatic txo cov dej uptake.

Puas siv tau PF-585 nrog sucrose polyols?
Yog, kom sib npaug tus nqi thiab kev ua tau zoo; piv txwv li, 50/50 nrog PF-1380.

Lub sijhawm txee ntawm PF-585 yog dab tsi?
6 lub hlis yog tias khaws cia kom qhuav; novolac polyols rhiab heev rau cov dej noo.

Kuv xav tau cov polyol hydrophilic rau polyurethane hydrogels. Vim li cas ho xaiv PEG1000?
PEG1000 muaj cov dej yaj zoo thiab tso cai rau kev nqus dej txog li 500%; zoo tagnrho rau kev kho qhov txhab.

Kuv cov tshuaj pleev xim rau cov ntaub yuav tsum tau siv cov tshuaj humectant. PEG1000 puas pab tau?
Yog, PEG1000 nqus cov dej noo, txo cov khoom siv hluav taws xob; siv 1–5% hauv cov chav dej tiav.

Qhov txawv ntawm PEG1000 thiab PEG2000 hauv cov tshuaj tso roj hmab yog dab tsi?
PEG1000 yog kua, yooj yim dua rau txau; PEG2000 yog khoom khov, siv rau hauv cov kub yaj.

Kuv cov polyurethane dispersion (PUD) xav tau ib qho non-ionic hydrophilic segment. Yuav siv PEG1000 li cas?
Siv PEG1000 ua ib feem mos (10–20%) los txhim kho kev sib kis hauv dej.

Puas siv tau PEG1000 ua roj nplua nyeem rau hauv cov kua hlau?
Yog, nws muab cov roj nplua nyeem thiab txias rau ciam teb yam tsis muaj cov khoom seem.

Kuv cov nplaum rau daim ntawv lo yuav tsum tiv taus dej noo. PEG1000 puas haum?
Tsis yog, nws yog hydrophilic; siv cov hydrophobic polyol hloov.

Cov ntsiab lus K⁺ feem ntau (≤5 ppm) hauv PEG1000 yog dab tsi?
Cov potassium tsawg yog qhov tseem ceeb rau kev siv hluav taws xob; MOFAN PEG ua tau raws li qhov no.

PEG1000 puas ua rau muaj xim daj hauv polyurethane elastomers?
Tsis yog, nws ruaj khov nyob rau hauv cov xwm txheej ib txwm muaj, tab sis zam kom tsis txhob kub siab (> 150 ° C) mus sij hawm ntev.

Kuv cov tshuaj pleev ib ce xav tau cov tshuaj uas ua kom yaj. PEG1000 puas siv tau?
Yog, nws yog qhov tsis mob thiab tsis khaus, siv rau hauv cov tshuaj pleev thiab tshuaj pleev.

PEG1000 puas haum rau kev siv rau kev sib cuag zaub mov tsis ncaj qha?
Yog, cov qib uas ua raws li FDA muaj; xyuas cov cai tshwj xeeb.

Kuv tsim cov nplaum polyurethane khov kho rau kev tsim khau. Vim li cas ho siv PEG2000?
PEG2000 yog cov khoom khov kho ntawm chav tsev kub, muab lub zog ntsuab sai thiab viscosity yaj qis (60–80 ° C).

Kuv tus neeg sawv cev ntsuas qhov loj ntawm cov ntaub xav tau qhov yooj ywm ntawm zaj duab xis thiab yaj tau hauv dej. PEG2000 ua haujlwm li cas?
Nws tsim cov zaj duab xis uas yooj ywm, yaj tau hauv dej; feem ntau siv 5–10% hauv cov qauv loj.

Qhov zoo ntawm PEG2000 dua PEG1000 hauv kev tso pwm roj hmab yog dab tsi?
Cov khoom PEG2000 khov kho tuaj yeem siv ua cov khoom kub yaj lossis yaj rau hauv dej; muab cov zaj duab xis tuab dua, ruaj khov dua.

Kuv cov ua npuas dej polyurethane rau cov phuam da dej xav tau kev nqus dej ntau. PEG2000 puas tuaj yeem ua ib feem?
Yog, sib tov nrog diisocyanate prepolymer los tsim ua npuas dej uas nthuav tau.

PEG2000 puas haum rau cov tshuaj pleev hauv paus?
Yog, nws yog siv ua lub hauv paus dej-soluble rau cov tshuaj pleev sab nraud.

Kuv cov tshuaj sib tov ua vaj tse xav tau cov tshuaj txo dej. PEG2000 puas ua haujlwm?
Tsis yog ncaj qha; PEG yog siv los ua tus txo qhov ntsws, tsis yog superplasticizer.

Lub ntsiab lus yaj ntawm PEG2000 yog dab tsi?
Kwv yees li ntawm 50–54°C; nws mos ua ntej yaj.

Puas siv tau PEG2000 ua cov khoom hloov pauv theem (PCM) rau kev khaws cia thermal?
Yog, nws cov enthalpy yaj yog ~ 170 J / g; zoo rau kev khaws cia qis-kub.

Kuv cov khoom siv ceramic binder xav tau cov khoom siv burnout. PEG2000 puas tsim nyog?
Yog, nws hlawv tawm huv si ntawm 300–400°C, tsis tawm tshauv.

PEG2000 puas nqus tau cov dej noo los ntawm huab cua?
Yog, nws yog hygroscopic; khaws cia rau hauv cov thawv kaw.

Kuv xav tau ib lub PEG granular rau kev sib tov yooj yim hauv cov hmoov txheej. PEG3000 puas haum?
Yog, PEG3000 granules tuaj yeem sib xyaw ua ke; siv ua cov roj nplua nyeem thiab cov khoom pab ntws.

Kuv cov roj hmab xav tau kev pab ua kom txo qhov nplaum. Yuav siv PEG3000 li cas?
Ntxiv 1–3 phr thaum lub sijhawm sib tov; nws txav mus rau saum npoo thiab ua haujlwm ua tus neeg sawv cev tiv thaiv kev sib tsoo.

Tus nqi hydroxyl ib txwm muaj ntawm PEG3000 yog dab tsi?
32–35 mgKOH/g; muaj txiaj ntsig zoo rau cov txheej polyurethane uas tsis muaj kev sib txuas qis.

Kuv daim ntawv txheej xav tau kev ci ntsa iab dua. PEG3000 puas pab tau?
Yog, ua tus neeg sawv cev rau kev sib npaug; siv 0.5–2% raws li tag nrho cov khoom khov.

Puas yog PEG3000 tsim nyog rau kev ua cov polyurethane elastomers uas muaj molecular hnyav?
Yog, tab sis tsuas yog ua ib daim mos mos xwb; siv nrog diisocyanate thiab saw hlau txuas.

Kuv cov kua ua haujlwm hlau xav tau cov tshuaj surfactant uas tsis yog ionic. PEG3000 puas ua haujlwm?
Nws muaj kev ua haujlwm tsawg ntawm qhov chaw; zoo dua los siv PEG esters (piv txwv li, PEG3000 dioleate).

Cov lus qhia txog cov dej hauv cov dej yog dab tsi (≤0.15%)? Yuav ua li cas kom paub tseeb?
MOFAN PEG muaj ≤0.15% dej; khaws cia rau hauv qhov chaw qhuav.

Puas siv tau PEG3000 rau hauv 3D printing filaments (ua ib lub plasticizer)?
Yog, tab sis nws yog hydrophilic; tej zaum yuav ua rau muaj teeb meem nqus dej noo.

Kuv cov nplaum rau cov khoom uas muaj qhov me me yuav tsum tau nkag mus tob. PEG3000 puas tuab dhau?
Ua kom sov txog 60 ° C kom txo qhov viscosity kom nkag mus zoo dua.

PEG3000 puas lwj tau?
Yog, nws yooj yim biodegradable.

Kuv tsim cov ntaub tiv thaiv kev kub ntxhov uas yuav tsum tau ua kom ruaj khov. Vim li cas ho siv PEG6000?
Qhov hnyav ntawm cov molecular siab dua ua rau cov zaj duab xis ruaj khov dua thiab tsawg dua kev tsiv teb tsaws chaw; siv 2–5%.

Kuv cov tshuaj uas tso roj hmab tawm yuav tsum muaj PEG uas muaj molecular hnyav heev los ua ib daim zaj duab xis tawv. PEG6000 puas tsim nyog?
Yog, nws muab kev tso tawm zoo heev rau cov roj hmab latex thiab ua npuas ncauj; thov ua cov tshuaj hauv dej.

Qhov zoo ntawm PEG6000 dua PEG3000 hauv cov tshuaj tiv thaiv xeb hlau yog dab tsi?
PEG6000 tsim cov zaj duab xis tiv thaiv tuab dua, kav ntev dua nyob rau hauv cov huab cua noo.

Kuv cov tshuaj ntxiv rau ntawv thiab pulp yuav tsum tau txhim kho lub zog ntub. PEG6000 puas pab tau?
Tsis yog ncaj qha; nws yog siv los ua tus neeg sawv cev de-inking lossis cov roj nplua nyeem txheej.

PEG6000 puas haum rau cov electrolytes polymer khov kho hauv cov roj teeb?
Yog, nws tuaj yeem ua ke nrog cov ntsev lithium rau kev ua haujlwm ntawm ionic.

Kuv cov khoom siv pab sib tsoo rau cov khoom siv abrasives yuav tsum txo qhov kev sib txhuam. Yuav siv PEG6000 li cas?
Ntxiv 0.5–2% ua roj nplua nyeem thaum lub sijhawm sib tsoo.

PEG6000 qhov tsos yog dab tsi?
Cov hmoov dawb; yaj mus ua kua ntshiab saum 60°C.

Kuv cov polyurethane potting compound xav tau qhov shrinkage tsawg. PEG6000 puas tuaj yeem txo nws?
Yog, nws qhov kev ua haujlwm tsawg thiab MW siab txo qhov polymerization shrinkage.

PEG6000 puas ua rau cov roj hmab tawg paj?
Ntawm cov theem siab (> 3 phr), nws tuaj yeem tawg paj; khaws cia qis dua 2 phr.

Puas yog PEG6000 tau pom zoo rau cov khoom siv sib cuag nrog zaub mov?
Yog, nrog rau kev ua raws li qib zaub mov tsim nyog.

Kuv xav tau ib lub PEG uas muaj molecular weight siab heev rau cov tshuaj ntsiav binders. PEG10000 puas haum?
Yog, nws muab kev khi zoo thiab tswj kev tso tawm; siv rau hauv cov qauv tso tawm ntev.

Kuv cov roj nplua nyeem uas yog dej rau cov khoom siv kho mob xav tau qhov viscosity siab thiab tsis muaj tshuaj lom. PEG10000 ua haujlwm li cas?
Nws muab cov roj nplua nyeem zoo heev thiab sib haum nrog cov tsiaj txhu; siv 10–20% cov tshuaj.

Qhov zoo ntawm PEG10000 dua PEG6000 hauv cov tshuaj pleev ib ce yog dab tsi?
Lub zog tuab dua thiab daim tawv nqaij du.

Kuv cov khoom siv ceramic extrusion binder xav tau lub zog ntsuab siab. PEG10000 puas pab tau?
Yog, nws muab cov khoom zoo heev thiab hlawv tawm huv si.

PEG10000 puas tsim nyog ua cov khoom siv hloov pauv theem khoom khov kho?
Yog, melting point ~ 64 ° C, cua sov ntawm fusion ~ 180 J / g.

Kuv daim ntawv txheej xav tau tus neeg sawv cev rau kev sib txhuam. Yuav siv PEG10000 li cas?
Siv ua cov dej kub yaj los yog cov dej sib xyaw; 0.5–2% ntawm qhov hnyav txheej.

Cov yam ntxwv ntawm PEG10000 yog dab tsi?
Hmoov dawb; feem ntau agglomerate; khaws cia hauv qab 30 ° C.

Kuv cov ua npuas polyurethane rau kev siv biomedical yuav tsum tsis txhob muaj cytotoxicity. PEG10000 puas siv tau?
Yog, nws yog USP / EP qib muaj; siv rau hauv hydrogels.

PEG10000 puas ua rau tawv nqaij khaus?
Tsis yog, nws tsis khaus thiab hypoallergenic.

Kuv cov tshuaj txhuam hlau xav tau ib qho uas muaj dej noo zoo. PEG10000 puas haum?
Yog, tab sis ua ntej yaj hauv dej sov.

Kuv xav tau PEG uas muaj qhov hnyav molecular siab tshaj plaws rau kev xa tshuaj mus tas li. PEG20000 puas yog qhov kev xaiv zoo?
Yog, PEG20000 muab qhov nrawm tshaj plaws ntawm kev yaj; zoo tagnrho rau cov qauv ib zaug ib hnub.

Kuv cov tshuaj kho dej xav tau cov polymer tuab heev, tsis yog ionic. PEG20000 ua haujlwm li cas?
Nws ua rau cov dej viscosity nce ntxiv yam tsis muaj kev cuam tshuam ionic; siv 1–3% rau qhov ua kom tuab dua.

Qhov zoo ntawm PEG20000 hauv kev tso pwm roj hmab yog dab tsi?
Tsim ib zaj duab xis uas ruaj khov, tsis nplaum uas tuaj yeem tiv taus ntau lub voj voog molding.

Kuv cov electrolyte polymer khov kho rau roj teeb lithium xav tau lub zog kho tshuab siab. PEG20000 puas siv tau?
Yog, tab sis nws yog crystalline ntawm chav tsev kub; sib tov nrog cov MW qis PEG lossis plasticizers.

PEG20000 puas tsim nyog siv ua roj nplua nyeem rau kev tsim hlau ceev ceev?
Yog, siv ua cov khoom kub yaj lossis cov dej sib xyaw; muab lub zog zaj duab xis zoo heev.

Kuv cov ntaub tiav xav tau cov nyhuv tiv thaiv hluav taws xob tas mus li. PEG20000 puas tuaj yeem muab nws?
Nws cov MW siab txo qhov kev tsiv teb tsaws chaw, muab cov txiaj ntsig ntev dua.

Lub ntsiab lus yaj ntawm PEG20000 yog dab tsi?
Kwv yees li ntawm 66–68°C; siab dua li cov MW PEGs qis dua.

Kuv cov khoom siv ceramic slip casting xav tau ib daim binder uas hlawv qeeb heev. PEG20000 puas tsim nyog?
Yog, nws qhov kev lwj qeeb qeeb tso cai rau kev tswj hwm kev hlawv tawm yam tsis muaj kev tawg.

Puas yog PEG20000 nqus dej noo ntau npaum li cov MW PEGs qis dua?
Tsawg dua hygroscopic vim yog qhov sib piv ntawm cov pawg kawg qis dua; tseem xav tau kev cia khoom qhuav.

Kuv cov nplaum kho mob xav tau ib daim nplaum uas yaj tau hauv dej. PEG20000 puas siv tau?
Yog, nws tuaj yeem raug pov rau hauv cov yeeb yaj kiab rau cov nplaum tawv nqaij ib ntus.