Cov tshuaj polyurethane catalysts ua lub luag haujlwm tseem ceeb hauv kev tsim cov polyurethanes, ua lub zog tsav tsheb tom qab cov tshuaj tiv thaiv uas tsim cov ntaub ntawv no. Ntawm ntau yam tshuaj catalysts muaj, MXC-T120 sawv tawm ua ib qho kev xaiv muaj zog thiab ua haujlwm tau zoo rau ntau yam kev siv polyurethane, los ntawm kev txau ua npuas ncauj mus rau polyurethane tawv thiab cov khoom yas siab elasticity. Nkag siab txog kev ua haujlwm ntawm polyurethane catalysts thiab qhov zoo ntawmMXC-T120yog qhov tseem ceeb rau kev ua kom zoo dua cov txheej txheem ntau lawm thiab ua tiav cov khoom siv zoo dua.
Feem ntau, ib qho catalyst yog ib yam khoom uas ua rau kom muaj kev sib xyaw ua ke sai dua yam tsis tau siv rau hauv cov txheej txheem. Hauv cov txheej txheem ntawm kev tsim polyurethane, cov catalysts tseem ceeb heev rau kev ua kom cov tshuaj sib xyaw ua ke ntawm polyols thiab isocyanates sai dua, cov khoom tseem ceeb ntawm polyurethane. Cov tshuaj sib xyaw ua ke no, hu ua gelation, tsim cov polymer matrix ntawm polyurethane. MXC-T120, ib qho catalyst raws li dibutyltin, muaj txiaj ntsig zoo hauv kev pab txhawb cov tshuaj sib xyaw ua ke no, muab cov haujlwm catalytic siab thiab txhim kho hydrolytic stability.
Ib qho ntawm cov haujlwm tseem ceeb ntawm cov tshuaj polyurethane catalysts zoo li MXC-T120 yog tswj lub sijhawm gelling. Los ntawm kev ua kom cov txheej txheem gelation sai dua, cov tshuaj catalysts pab tsim cov polymer network ruaj khov sai thiab zoo. Qhov no tseem ceeb heev rau cov ntawv thov xws li txau ua npuas ncauj, qhov twg kev kho sai yog qhov tseem ceeb rau kev tswj cov duab thiab kev ua kom ruaj khov. Tsis tas li ntawd, MXC-T120's kev ua haujlwm catalytic robust ua kom muaj kev ua tau zoo sib xws thiab txhim khu kev qha thoob plaws ntau hom polyurethane formulations.
Ntxiv rau kev tswj lub sijhawm gelling, cov catalysts kuj tseem ua lub luag haujlwm tseem ceeb hauv kev sib npaug ntawm cov tshuaj tiv thaiv sab, suav nrog cov tshuaj tiv thaiv ntawm dej nrog isocyanates los tsim cov pa roj carbon dioxide (CO2). Cov tshuaj tiv thaiv no yog qhov tseem ceeb rau cov txheej txheem ua npuas ncauj, uas muab cov khoom zoo xws li kev rwb thaiv tsev thiab kev tiv thaiv rau cov polyurethane ua npuas ncauj. Txawm li cas los xij, kev tsim cov pa roj ntau dhau tuaj yeem ua rau muaj qhov tsis zoo thiab cov khoom siv tsis zoo. MXC-T120 ua tau zoo hauv kev tswj cov tshuaj tiv thaiv sab no, ua kom muaj kev sib npaug zoo ntawm kev tsim cov polymer thiab kev tsim cov pa roj, ua rau cov npuas ncauj zoo nrog cov qauv cell sib xws.
Piv rau cov tshuaj amine catalysts, uas tau los ntawm ammonia (NH3) thiab sib txawv hauv kev ua haujlwm raws li lawv cov qauv thiab basicity, MXC-T120 muaj kev ua tau zoo dua hauv kev ruaj khov hydrolytic. Cov tshuaj amine catalysts, tshwj xeeb tshaj yog tertiary amines, feem ntau siv rau hauv kev tsim ua npuas ncauj vim lawv muaj peev xwm txhawb nqa CO2 tsim. Txawm li cas los xij, lawv kuj tseem yuav ua rau muaj kev hloov pauv thiab kev rhiab heev rau dej noo, uas yuav cuam tshuam rau kev ruaj khov ntawm cov khoom siv mus sij hawm ntev. MXC-T120, nrog nws cov khoom sib xyaw dibutyltin, muab kev tiv thaiv zoo dua rau hydrolysis, ua kom ntseeg tau tias cov khoom polyurethane ruaj khov thiab ruaj khov txawm tias nyob rau hauv cov xwm txheej ib puag ncig nyuaj.
Xaus lus, qhovpolyurethane catalystMXC-T120 yog ib qho tshuaj catalyst muaj zog thiab siv tau ntau yam uas ua rau kev ua haujlwm zoo thiab zoo ntawm polyurethane ntau ntxiv zoo dua. Nws cov dej num catalytic siab, kev ruaj khov hydrolytic zoo heev, thiab muaj peev xwm sib npaug cov tshuaj tiv thaiv sab nraud ua rau nws yog ib qho kev xaiv zoo tshaj plaws rau ntau yam kev siv, los ntawm kev txau ua npuas dej mus rau cov khoom yas thiab cov khoom yas. Los ntawm kev siv cov txiaj ntsig ntawm MXC-T120, cov chaw tsim khoom tuaj yeem ua tiav cov khoom siv polyurethane zoo dua nrog kev ua tau zoo dua thiab kev ruaj khov.
Lub sijhawm tshaj tawm: Lub Yim Hli-05-2024