Ua npuas dej Polyurethane, yog ib yam khoom siv tau ntau yam thiab siv dav hauv ntau yam lag luam, yog tsim los ntawm cov txheej txheem tshuaj lom neeg uas muaj kev sib xyaw ntawm polyols thiab polyisocyanates. Ib qho ntawm cov kauj ruam tseem ceeb hauv cov txheej txheem no yogkev ua kom cov tshuaj gelation, uas ua rau muaj cov qauv polyurethane network, muab ua npuas ncauj nws cov khoom xav tau.
Gelation hauv Polyurethane Foam yog dab tsi?
Gelation yog hais txog theem pib ntawm kev sib xyaw ntawm polyol (feem ntau yog polyether lossis polyester polyol) nrog isocyanate (xws li MDI lossis TDI) los tsim ib lub network polymer cross-linked. Lub network no, tseem hu ua polyurethane, muab cov ua npuas ncauj nrog cov qauv khov kho lossis hloov pauv tau, nyob ntawm cov qauv.
Thaum lub sijhawm ua gelation, qhov kev sib xyaw ntawm polyol thiab isocyanate tsim cov urethane bonds. Thaum qhov kev sib xyaw mus ntxiv, qhov viscosity ntawm qhov sib tov nce ntxiv, thaum kawg hloov cov kua dej mus ua ib yam khoom zoo li gel. Qhov dav thiab qhov ceev ntawm qhov kev sib xyaw no nyob ntawm ntau yam, suav nrog hom polyol thiab isocyanate siv, kub, cov dej noo, thiab qhov tseem ceeb tshaj plaws, cov catalyst xaiv.
Lub Luag Haujlwm ntawm Catalysts hauv Gelation
Cov catalysts tseem ceeb rau kev tswj qhov nrawm ntawm cov tshuaj tiv thaiv gelation, kom ntseeg tau tias muaj lub network polyurethane ruaj khov.Lawv ua kom cov tshuaj tiv thaiv ntawm polyols thiab polyisocyanates nrawm dua, ua kom yooj yim hloov pauv ntawm cov kua mus rau cov qauv ua npuas ncauj.
Ib qho ntawm cov catalysts tseem ceeb hauv kev tsim cov polyurethane ua npuas ncauj yog covMXC-T9, ib qho tshuaj catalyst muaj zog ua los ntawm hlau uas tsim tshwj xeeb rau cov tshuaj gelation. MXC-T9 muab kev tswj hwm zoo heev rau qhov nrawm ntawm cov tshuaj, ua kom muaj kev ua haujlwm sib xws thiab ruaj khov thoob plaws hauv cov txheej txheem ua npuas dej. Nws yog qhov tshwj xeeb tshaj yog rauua npuas ncauj polyurethane mos moskev tsim khoom thiab ua haujlwm ua tus catalyst tseem ceeb rau gelation hauvua npuas ncauj polyurethane ua los ntawm polyether.
Cov yam ntxwv tseem ceeb ntawmMXC-T9
- Catalyst muaj zog thiab ruaj khov:MXC-T9 yog ib qho catalyst uas muaj hlau ua haujlwm uas muab cov catalytic ua haujlwm zoo thiab sib xws thoob plaws hauv qhov kev sib xyaw, ua rau muaj cov ua npuas dej zoo nrog cov yam ntxwv kwv yees tau thiab sib xws.
- Kev Siv Tau Ntau Yam Hauv Daim Ntawv Thov:Txawm hais tias feem ntau siv rau cov tshuaj tiv thaiv gelation hauv polyurethane ua npuas ncauj polyurethane, MXC-T9 kuj tseem tuaj yeem ua haujlwm ua ib qhotshuaj antioxidantlos txhim kho qhov ruaj khov thiab ua kom ntev ntawm cov ua npuas ncauj.
- Cov Khoom Ua Npuas Uas Zoo Dua:Los ntawm kev tswj cov txheej txheem gelation, MXC-T9 pab tsim cov ua npuas dej uas muaj cov qauv zoo, tawv, thiab ywj siab, ua rau nws tseem ceeb heev rau kev tsim cov ua npuas dej polyurethane mos.
Xaus lus
Qhov tshuaj tiv thaiv gelation yog ib kauj ruam tseem ceeb hauv kev tsim cov polyurethane ua npuas ncauj, qhov twg polyols thiab polyisocyanates teb los tsim ib lub network polyurethane ruaj khov. Siv cov catalyst zoo xws liMXC-T9 ua kom muaj cov txheej txheem du thiab tsim cov ua npuas ncauj zoo nrog cov yam ntxwv xav tau. Qhov ruaj khov zoo heev thiab kev ua haujlwm sib xws ntawm MXC-T9 ua rau nws yog qhov tseem ceeb rau kev tsim cov ua npuas ncauj polyurethane uas yooj ywm, ua lub luag haujlwm tseem ceeb hauv kev ua tiav cov khoom ua npuas ncauj txhim khu kev qha, ua tau zoo.
Lub sijhawm tshaj tawm: Lub Ob Hlis-18-2025