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3 txoj kev tertiary amine catalyst ua rau kom ceev ntawm kev rwb thaiv tsev
MOFAN TMR-2, paub los ntawm tus lej 62314-25-4, sawv tawm ua tus catalyst tertiary amine uas ua kom cov yeeb nkab rwb thaiv tsev sai dua los ntawm peb qhov kev ua tseem ceeb: kev pib ua haujlwm sai, kev nthuav dav ua npuas ncauj zoo dua, thiab kev kho sai dua. Cov catalyst no cuam tshuam nrog cov pab pawg isocyanate, ua rau lawv cov tshuaj tiv thaiv ntau ntxiv thiab ua rau ...Nyeem ntxiv -
Cov txheej txheem tsim cov polyurethane tus kheej tawv nqaij
Polyol thiab isocyanate piv: Polyol muaj tus nqi hydroxyl siab thiab qhov hnyav molecular loj, uas yuav ua rau kom qhov ceev ntawm kev sib txuas thiab pab txhim kho qhov ceev ntawm cov ua npuas ncauj. Kho qhov isocyanate index, uas yog, qhov piv molar ntawm isocyanate rau cov hydrogen nquag hauv po...Nyeem ntxiv -
Kev tshawb fawb txog cov nplaum polyurethane rau kev ntim khoom yooj ywm yam tsis muaj kev kho kub siab
Ib hom nplaum polyurethane tshiab tau npaj los ntawm kev siv cov tshuaj me me molecule polyacids thiab cov tshuaj me me molecule polyols ua cov khoom siv raw los npaj cov prepolymers. Thaum lub sijhawm txuas ntxiv cov saw hlau, cov polymers hyperbranched thiab HDI trimers tau qhia rau hauv polyuretha...Nyeem ntxiv -
Kev tsim qauv ua tau zoo ntawm polyurethane elastomers thiab lawv daim ntawv thov hauv kev tsim khoom siab heev
Polyurethane elastomers yog ib chav kawm tseem ceeb ntawm cov khoom siv polymer ua tau zoo. Nrog lawv cov khoom siv lub cev thiab tshuaj lom neeg tshwj xeeb thiab kev ua tau zoo heev, lawv nyob hauv txoj haujlwm tseem ceeb hauv kev lag luam niaj hnub no. Cov ntaub ntawv no siv dav hauv ntau ...Nyeem ntxiv -
Polyurethane uas tsis yog ionic nrog lub teeb zoo rau kev siv rau hauv kev ua tiav tawv
Cov ntaub ntawv txheej polyurethane feem ntau yuav daj dhau sijhawm vim yog lub teeb ultraviolet lossis cua sov ntev, cuam tshuam rau lawv qhov tsos thiab lub neej ua haujlwm. Los ntawm kev qhia UV-320 thiab 2-hydroxyethyl thiophosphate rau hauv cov saw hlau txuas ntxiv ntawm polyurethane, ib qho nonioni...Nyeem ntxiv -
Cov ntaub ntawv polyurethane puas ua rau muaj kev tiv taus kub siab?
1 Cov ntaub ntawv polyurethane puas tiv taus qhov kub siab? Feem ntau, polyurethane tsis tiv taus qhov kub siab, txawm tias muaj lub kaw lus PPDI ib txwm muaj, nws qhov kub siab tshaj plaws tsuas yog nyob ib puag ncig 150 °. Cov polyester lossis polyether ib txwm muaj tej zaum yuav tsis tuaj yeem w...Nyeem ntxiv -
Cov Kws Tshaj Lij Polyurethane Thoob Ntiaj Teb Yuav Sib Sau Ua Ke Hauv Atlanta Rau Xyoo 2024 Polyurethanes Technical Conference
Atlanta, GA – Txij lub Cuaj Hlis 30 mus txog rau lub Kaum Hli 2, Omni Hotel ntawm Centennial Park yuav tuav lub Rooj Sab Laj Txog Kev Siv Polyurethanes Xyoo 2024, uas coj cov kws tshaj lij thiab cov kws tshaj lij los ntawm kev lag luam polyurethane thoob ntiaj teb los ua ke. Lub koom haum American Chemistry Counci...Nyeem ntxiv -
Kev Tshawb Fawb Txog Kev Nce Qib ntawm Cov Polyurethanes Uas Tsis Yog Isocyanate
Txij li thaum lawv tau qhia tawm xyoo 1937, cov ntaub ntawv polyurethane (PU) tau pom ntau daim ntawv thov thoob plaws ntau qhov chaw suav nrog kev thauj mus los, kev tsim kho, petrochemicals, textiles, mechanical thiab electrical engineering, aerospace, kev kho mob, thiab kev ua liaj ua teb. Cov m...Nyeem ntxiv -
Kev npaj thiab cov yam ntxwv ntawm polyurethane semi-rigid ua npuas ncauj rau kev ua haujlwm siab automotive handrails.
Lub armrest nyob rau hauv lub tsheb yog ib feem tseem ceeb ntawm lub cab, uas ua lub luag haujlwm ntawm kev thawb thiab rub lub qhov rooj thiab muab tus neeg txhais tes tso rau hauv lub tsheb. Thaum muaj xwm txheej ceev, thaum lub tsheb thiab lub handrail sib tsoo, polyurethane mos handrail thiab ...Nyeem ntxiv -
Cov Txuj Ci ntawm Kev Siv Tshuaj Polyurethane Ua Npuas Ncauj Rigid Foam
Cov khoom siv rwb thaiv tsev ua los ntawm polyurethane (PU) yog ib hom polymer uas muaj cov qauv rov ua dua ntawm carbamate segment, tsim los ntawm kev sib xyaw ntawm isocyanate thiab polyol. Vim nws cov khoom rwb thaiv tsev zoo heev thiab kev ua haujlwm tsis muaj dej, nws pom ntau daim ntawv thov hauv kev siv sab nraud...Nyeem ntxiv -
Kev taw qhia txog tus neeg sawv cev foaming rau polyurethane rigid foam siv hauv kev tsim kho teb
Nrog rau qhov xav tau ntawm cov tsev niaj hnub no rau kev txuag hluav taws xob thiab kev tiv thaiv ib puag ncig, kev ua haujlwm rwb thaiv tsev thermal ntawm cov ntaub ntawv tsim kho tau los ua qhov tseem ceeb dua. Ntawm lawv, polyurethane rigid foam yog cov khoom siv rwb thaiv tsev zoo heev,...Nyeem ntxiv -
Qhov sib txawv ntawm Polyurethane raws li dej thiab Polyurethane raws li roj
Cov txheej txheem dej polyurethane uas ua los ntawm dej yog cov khoom siv tiv thaiv dej uas muaj cov khoom siv polymer elastic uas zoo rau ib puag ncig nrog kev nplaum zoo thiab tsis nkag tau. Nws muaj kev nplaum zoo rau cov cement-based substrates xws li cov pob zeb thiab pob zeb thiab cov khoom hlau. Cov khoom no...Nyeem ntxiv
