01. Kev Taw Qhia: Yuav Ua Li Cas Ib Lub Vaj Huam Sib Luag Uas Tau Muab Tshem Tawm Ua Rau Muaj Kev Poob Loj

Hauv lub chaw ua haujlwm tsim khoom ntawm ib lub tuam txhab tsim khoom siv hauv tsev loj, cov vaj huam sib luag polyurethane sandwich uas muaj hlau tshiab tau raug teeb tsa zoo nkauj tom qab tawm ntawm cov kab ntau lawm. Thaum lub sijhawm tshuaj xyuas zoo li niaj zaus, tus kws tshaj lij tau tsa ib lub vaj huam sib luag - thiab cov hlau uas muaj hlau tau sib cais ntawm lub hauv paus ua npuas ncauj yooj yim npaum li tev daim ntawv nplaum tawm.

Ib daim ntawv xaj uas muaj nqis ntau pua txhiab daus las raug tshem tawm tam sim ntawd.

Qhov no tsis yog ib qho yuam kev yooj yim. Nws yog ib qho kev ua tsis tiav ntawm lub cev uas tshwm sim los ntawm "tus neeg tua neeg uas tsis pom."

Thaum kev lag luam polyurethane hloov pauv ntawm HCFC-141b cov neeg sawv cev rau cov khoom siv ua npuas dej mus rau cov kab ke uas ua los ntawm pentane uas tsis ua rau ib puag ncig puas tsuaj, cov chaw tsim khoom tau ntsib teeb meem ntau ntxiv xws li kev sib txuas tsis muaj zog, kev ntsws ntawm vaj huam sib luag, thiab kev ua npuas dej tsis zoo. Cov mis uas ua tau zoo hauv HCFC-141b feem ntau ntsib kev ua tsis tiav uas tsis tau xav txog tom qab hloov mus rau pentane.

Vim li cas qhov no thiaj tshwm sim? Dab tsi yog qhov ua rau tsis sib txuas ntawm cov vaj huam sib luag polyurethane pentane-blown?

Tsab xov xwm no muab kev tshuaj xyuas tob txog seb cov khoom siv raw sib txawv cuam tshuam li cas rau kev ua haujlwm ntawm kev sib txuas hauv cov kab ke polyurethane pentane thiab muab cov tswv yim zoo tshaj plaws. Yog tias koj yog tus thawj tswj hwm kev tsim khoom, tus thawj coj kev tshaj lij, lossis tus kws tsim qauv, phau ntawv qhia no yog tsim tshwj xeeb rau koj.

Cov chaw tsim khoom siv cov txheej txheem pentane-blown polyurethane feem ntau xav tau cov qauv tsim tshwj xeeb kom sib npaug ntawm kev nplaum, kev ntws, kev ruaj khov ntawm qhov ntev, thiab kev ua haujlwm hluav taws. Xaiv qhov yogpolyurethane systemyog lub hauv paus rau kev ua tiav kev sib txuas ntawm vaj huam sib luag.

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 02. Kev Txheeb Xyuas Teeb Meem: Pentane Tau Hloov Dab Tsi Tiag?

2.1 Lub Tswv Yim Tseem Ceeb ntawm Kev Sib Txuas Lus

Qhov kev ua tau zoo ntawm kev sib txuas ntawm cov vaj huam sib luag polyurethane tas mus li yog nyob ntawm kev tsim cov tshuaj nplaum thiab kev sib txuas ntawm cov ua npuas ncauj thiab cov khoom siv ntsej muag (cov ntawv hlau, cov fiberglass ntsej muag, lossis cov ntawv ntsej muag) thaum lub sijhawm ua npuas ncauj.

Qhov zoo tshaj plaws, cov tshuaj sib tov yuav tsum ntub tag nrho cov nplaim vaj huam sib luag ua ntej gelation tshwm sim. Thaum crosslinking nce qib, ib lub network muaj zog ntawm cov tshuaj sib txuas thiab cov ntsiab lus anchoring tau tsim ntawm qhov interface.

2.2 Cov "Cov Kev Mob Tshwm Sim" ntawm Pentane

Piv nrog HCFC-141b, cov txheej txheem pentane-based muaj peb qhov teeb meem loj:

Kev Sib Tw	Kev piav qhia	Kev Cuam Tshuam rau Kev Sib Txuas Lus
Qhov Sib Txawv ntawm Cov Khoom Siv Solubility	Pentane muaj qhov sib xws qis dua nrog polyether thiab polyester polyols.	Qhov pib ntawm lub kaw lus viscosity nce ntxiv, txo qhov flowability thiab tiv thaiv kom tsis txhob ntub ntawm qhov chaw ntawm lub vaj huam sib luag.
Cov nyhuv txias evaporative	Pentane nqus tau cua sov tseem ceeb thaum lub sijhawm ua pa.	Qhov kub ntawm lub vaj huam sib luag txo qis, ua rau cov tshuaj kho qeeb qeeb thiab ua rau qhov chaw tsis txaus thiab tsis muaj zog lo.
Kev Hloov Pauv ntawm Cov Qauv Cell Ua Npuas Ncauj	Cov txheej txheem Pentane feem ntau tsim cov cell me me nrog qhov sib piv ntawm cov cell kaw siab dua.	Cov nplaim ua npuas dej du dua, txo qhov ua tau zoo ntawm kev sib txuas lus.

 

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 03. Kev Tshuaj Xyuas Cov Qauv: Xya Yam Tseem Ceeb Uas Cuam Tshuam Rau Kev Ua Haujlwm ntawm Kev Sib Txuas Lus Li Cas

Raws li cov ntaub ntawv tshawb fawb tshiab los ntawm cov tuam txhab tsim khoom lag luam, cov khoom sib xyaw hauv qab no muaj feem cuam tshuam loj rau kev ua haujlwm ntawm kev sib txuas.

3.1 Polyester thiab Polyether Polyols: Lub Hauv Paus ntawm Kev Sib Txuas Lus

Polyester polyols yog cov neeg pab txhawb rau lub zog sib txuas vim lawv cov pab pawg polar ester, uas tuaj yeem tsim kev sib cuam tshuam hydrogen-bond muaj zog nrog cov hlau.

Txawm li cas los xij, ntau hom polyester tuaj yeem cuam tshuam rau tus cwj pwm ua thiab cov khoom vaj huam sib luag kawg.

Cov polyester polyols uas muaj zog heev

• · Kev ua haujlwm zoo heev ntawm kev sib txuas
• · Kev ntws dej tsis zoo
• · Muaj kev pheej hmoo ntawm qhov tsis zoo ntawm qhov chaw

Cov polyester polyols uas tsis muaj zog ua haujlwm

• · Kev ntws zoo dua
• · Txo qhov ceev ntawm qhov sib txuas
• · Lub zog sib txuas qis dua

Cov Lus Qhia Txog Kev Txhim Kho

Siv lub tshuab polyester/polyether sib xyaw polyol. Polyether polyols tuaj yeem ua kom cov dej ntws zoo dua, ua rau cov ua npuas ncauj nthuav dav thiab ntub cov nplaim vaj huam sib luag zoo dua ua ntej gelation.

3.2 Dej: Ib rab ntaj ob sab uas tsis tshua muaj neeg suav tias yog ib qho tseem ceeb

Dej ua rau isocyanate ua rau muaj carbon dioxide thiab polyurea. Hauv cov kab ke pentane, cov dej hauv nws yuav tseem ceeb heev.

Kev Pheej Hmoo ntawm Dej Ntau Dhau

• · Cov tshuaj tiv thaiv exothermic muaj zog ua rau qhov chaw kho sai dua.
• · Kev tawv tawv ua ntej lub sijhawm ua rau muaj qhov "kho tsis tseeb".
• · Cov kev sib cuam tshuam ntawm qhov chaw thiab lub plawv tsis sib npaug.
• · Kev ntxhov siab sab hauv sib sau ua ke, ua rau muaj feem yuav ua tsis tau qhov kev sib txuas.

Cov Kev Tshawb Fawb

Kev txo cov dej hauv cov khoom siv tuaj yeem txhim kho qhov ruaj khov ntawm cov tuab ntawm lub vaj huam sib luag, lub zog sib txuas, thiab lub zog ua npuas dej hauv qhov kev nce siab.

3.3 Cov Catalysts: Cov Tswj Xyuas ntawm Lub Qhov Rai Ua Haujlwm

Cov kab tsim vaj huam sib luag tas mus li ua haujlwm ntawm qhov ceev heev, feem ntau yog 6–12 meters ib feeb. Kev xaiv catalyst ncaj qha txiav txim siab qhov sib npaug ntawm lub sijhawm ua haujlwm thiab kev ua haujlwm demolding.

Kev Ua Haujlwm Gel Catalyst Ntau Dhau

• · Qhov viscosity nce ntxiv ua ntej cov khoom sib tov mus txog qhov chaw ntawm lub vaj huam sib luag.
• · Lub peev xwm ntub dej raug txo qis.

Kev Ua Haujlwm PIR Trimerization Ntau Dhau

• · Kev ua npuas ncauj tawg zuj zus.
• · Kev ua tsis tiav ntawm qhov sib txuas feem ntau qhia tau tias yog kev ua tsis tiav ntawm kev sib koom ua ke es tsis yog kev ua tsis tiav ntawm cov nplaum.

Kev Nrhiav Tus yuam sij

Kev xaiv cov tshuaj PIR uas mos dua tuaj yeem txhim kho kev ntws thiab qhov tuab ntawm lub plawv ua npuas ncauj thaum tswj hwm lub zog ua npuas ncauj tag nrho. Kawm ntxiv txogcov tshuaj polyurethane catalystsrau cov ntawv thov vaj huam sib luag tas mus li.

3.4 Cov Tshuaj Tiv Thaiv Hluav Taws: Qhov Kev Phom Sij Zais Rau Kev Sib Txuas Lus

Cov tshuaj ua kom nplaim taws xws li TCPP thiab TCEP feem ntau siv los ua kom tau raws li qhov yuav tsum tau ua kom hluav taws kub. Txawm li cas los xij, lawv kuj ua haujlwm ua cov yas ua kom cov npuas dej tsis sib haum.

Cov Kev Tshawb Fawb

• · Kev thauj khoom tsawg dua uas tiv taus hluav taws tuaj yeem txhim kho kev ua haujlwm ntawm kev sib txuas.

Txoj Kev Pom Zoo

• Txo cov tshuaj uas tiv taus hluav taws kom tsawg thaum tseem tswj tau qhov yuav tsum tau ua kom muaj kev faib tawm hluav taws B2 (Oxygen Index ≥ 26%).
• Xav txog lwm txoj hauv kev los hloov cov tshuaj tiv thaiv hluav taws uas ua rau muaj kev kub ntxhov.

3.5 Cov Ntsuas Isocyanate (NCO Index)

Cov Ntsuas Qis (<1.05)

• · Kev sib txuas tsis txaus
• · Lub zog ua npuas ncauj txo qis
• · Kev ua haujlwm tsis zoo ntawm kev sib txuas

Cov Ntsuas Siab (1.10–1.15)

• · Ua kom cov npuas dej khov kho ntxiv
• · Kev ruaj khov ntawm qhov ntev zoo dua
• · Tej zaum yuav ua npuas ncauj tawg yog tias siab dhau heev

Kev Paub Ua Haujlwm

Kev nce qib NCO index me ntsis tuaj yeem pab tiv thaiv kom cov vaj huam sib luag ntsws, yog tias muaj cov xwm txheej tom qab kho kom zoo.

3.6 Cov tshuaj silicone surfactants

Cov tshuaj silicone surfactants siv rau hauv cov kab ke pentane yuav tsum muab kev tswj hwm zoo rau lub qhov rais qhib cell.

• Cov qauv ntawm cov hlwb kaw ntau dhau yuav ua rau ntsws.
• Cov qauv qhib ntau dhau ntawm lub hlwb tuaj yeem txo qhov muaj zog ntawm lub cev.

Ib qho silicone surfactant uas raug xaiv kom raug tuaj yeem tsim cov nplaim ua npuas ncauj uas tsis ntxhib, ua rau muaj kev sib txuas lus zoo nrog cov khoom siv ntsej muag.

3.7 Kev kho ua ntej ntawm qhov chaw ntawm vaj huam sib luag

Thaum qhov kev ua kom zoo tshaj plaws ntawm cov mis tshuaj mus txog nws qhov txwv thiab cov teeb meem kev sib txuas tseem muaj, qhov ua rau hauv paus yuav yog cov khoom siv nws tus kheej.

Cov Khoom Uas Muaj Peev Xwm Ua Rau Muaj Kab Mob Ntawm Qhov Chaw

• · Cov roj dov
• · Cov txheej oxide
• Cov seem ntawm qhov chaw

Cov kuab paug no tuaj yeem txo qhov kev nplaum.

Cov Kev daws teeb meem pom zoo

Daim Ntawv Thov PrimerKev siv cov tshuaj pleev xim isocyanate uas tau hloov kho lossis cov nplaum kub yaj hauv online tsim ib txheej hloov pauv zoo ntawm cov ua npuas ncauj thiab cov khoom siv ntsej muag.

Kev Txuas Khoom Siv Kho TshuabSiv cov menyuam dov perforation los tsim cov micro-perforations ntawm qhov chaw ntawm lub vaj huam sib luag tuaj yeem ua rau thaj chaw sib cuag ntawm cov nplaum thiab txhim kho lub zog sib txuas.

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 04. Phau Ntawv Qhia Txog Kev daws teeb meem: Kev Hloov Kho Ua Ntej

Thaum muaj teeb meem kev sib txuas, cov txheej txheem kev ua kom zoo dua no raug pom zoo:

 

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 05. Xaus Lus

Cov teeb meem kev sib txuas hauv cov vaj huam sib luag polyurethane pentane-blown yog qhov sib tw ntawm qhov ceev ntawm cov tshuaj tiv thaiv thiab lub sijhawm ntws.

Txij li ntawm kev tsim polarity ntawm polyols thiab kev tswj dej kom meej mus rau kev xaiv catalyst thiab kev tswj lub sijhawm teb, txhua qhov kev qhia txog kev tsim cov tshuaj cuam tshuam rau seb lub vaj huam sib luag puas yuav tswj tau nws qhov kev ncaj ncees - lossis maj mam delaminate ntau lub hlis tom qab kev teeb tsa.

Raws li cov cai ib puag ncig txuas ntxiv nruj, suav nrog kev hloov kho tshiab rau cov cai F-gas thoob ntiaj teb, kev siv cov pentane thiab cyclopentane / isopentane sib xyaw tshuab yuav txuas ntxiv loj hlob.

Kev ua kom tau zoo dua cov tswv yim tsim thiab ua cov txheej txheem niaj hnub no yuav pab cov tuam txhab tsim khoom kom muaj kev sib tw zoo dua hauv kev lag luam uas nthuav dav sai rau cov vaj huam sib luag rwb thaiv tsev uas ruaj khov rau ib puag ncig.

Nrhiav ib lub tshuab polyurethane pentane-blown uas txhim khu kev qha?

MOFAN muab cov kev daws teeb meem polyurethane system rau cov vaj huam sib luag sandwich txuas ntxiv, suav nrog pentane-based blended polyols, catalysts, flame retardants, thiab kev txhawb nqa kev tsim qauv.

Kawm ntxiv txog peb lub Tsev Polyurethane System

Tiv tauj peb pab neeg kev tshaj lij