Lub Luag Haujlwm ntawm Gel Catalysts hauv Polyurethane: Nkag Siab MXC-T12 (DBTDL) hauv Gelling Reaction

Gel Catalyst yog dab tsi?

Lubgel catalysthauv polyurethane chemistry yog ib yam khoom uas ua kom cov tshuaj tiv thaiv ntawmisocyanatethiab lubpolyol, thiab cov polyurethane bonds tsim muab cov qauv kawg ntawm cov khoom siv. Cov tshuaj tiv thaiv no tseem ceeb hauv kev tsim polyurethane vim nws txiav txim siab qhovcov khoom siv kho tshuabthiabkev ruaj khovntawm cov ua npuas dej lossis txheej txheej. Cov tshuaj catalyst gel txhawb nqa theem "cross-linking" lossis "hardening", feem ntau hu ua cov tshuaj gelling, es tsis yog cov tshuaj catalyst blowing uas pab txhawb kev sib xyaw ntawm isocyanate thiab dej, tso cov pa roj carbon dioxide, thiab ua npuas dej nthuav dav.

Cov txheej txheem tshuaj tiv thaiv hauv Gel Catalyst

1. Kev ua kom Polyol thiab Isocyanate ua haujlwm:Cov tshuaj catalysts gel, zoo lidibutyltin dilaurate (DBTDL)hauv MXC-T12, ua kom cov pab pawg hydroxyl hauv cov pab pawg polyol thiab cov isocyanate ua haujlwm. Qhov no txo ​​qhov kev thaiv zog rau kev tawm tsam nucleophilic ntawm polyol's hydroxyl pawg ntawm cov isocyanate's carbon.
2. Kev Tsim Cov Kev Sib Txuas Urethane:Cov tshuaj catalyst pab txhawb kev tsim cov urethane bonds los ntawm kev ua kom cov tshuaj tiv thaiv kinetics sai dua. Qhov no ua rau muaj kev sib txuas ntawm cov saw polymer, uas ua rau cov viscosity nce ntxiv thiab ua rau cov khoom tawv.
3. Kev Xaiv Catalysis: DBTDL (MXC-T12)yog xaiv raukev ua xua gelthiab ua kom muaj kev sib npaug ntawm kev kho. Nws tsis ua rau muaj kev tsis haum tshuaj xws li trimerization ntawm isocyanates, ua kom ntseeg tau tias cov khoom zoo li xav tau.

Kev siv MXC-T12 (DBTDL) ua ib qho Gel Catalyst

MXC-T12 siv dav hauv cov tshuab polyurethane qhov twg qhov kev ua kom raug thiab kev tswj hwm ntawm cov tshuaj tiv thaiv gel yog qhov tseem ceeb. Nov yog nws lub luag haujlwm hauv ntau qhov xwm txheej ntawm kev siv:

1.Tshuaj tsuag ua npuas ncauj:

MXC-T12 ua kom cov tshuaj yaj sai thiab sib txuas ua ke hauv cov ua npuas dej kaw lossis qhib.

Nws ua kom qhov kev sib npaug ntawm kev nthuav dav (tshuab) thiab kev tawv (gelling), ua kom lub npuas dej ua tiav cov yam ntxwv xav tau.

2.Cov Tshuaj Pleev Xim thiab Cov Nplaum:

Hauv cov txheej txheej, MXC-T12 txhawb kom nws khov zoo sib npaug, ua rau nws du thiab ruaj khov.

Rau cov nplaum, nws ua kom muaj kev sib txuas zoo los ntawm kev ua kom cov tshuaj gelling sai dua rau kev sib koom ua ke siab.

3.Cov Ua Npuas Ncauj Rigid thiab Flexible:

Rau cov ua npuas ncauj ruaj khov, MXC-T12 pab ua kom muaj kev ruaj khov siab thiab lub zog compressive.

Hauv cov ua npuas dej uas yoog tau, nws ua kom muaj kev ywj pheej thiab elasticity los ntawm kev tswj cov urethane tsim.

Kev Siv Tshuaj Tiv Thaiv nrog MXC-T12

1. Kev Siv Tshuaj Tsawg, Kev Ua Haujlwm Siab:MXC-T12 ua haujlwm tau zoo ntawm cov tshuaj tsawg, muab kev tswj hwm zoo heev rau cov qauv tshuaj tiv thaiv.
2. Kev Kho Mob Tom Qab:MXC-T12 ua kom nws khov kho txawm tias tom qab theem pib ua tshuaj tiv thaiv, ua rau nws ruaj khov thiab muaj zog dua.
3. Kev Ruaj Ntseg Hydrolytic:Nws tswj tau qhov ua tau zoo hauv cov chaw noo noo, ua rau nws tsim nyog rau cov qauv uas raug dej lossis av noo.

Hauv kev xaus,MXC-T12 (DBTDL)Nws ua lub luag haujlwm tseem ceeb ua tus catalyst gel hauv cov polyurethane systems los ntawm kev pab txhawb kev sib txuas lus meej. Nws qhov ua tau zoo thiab kev xaiv ua rau nws yog qhov kev xaiv dav rau cov ntawv thov uas xav tau kev ruaj khov, kev ruaj khov, thiab kev ua haujlwm tas mus li, xws li cov tshuaj tsuag ua npuas ncauj, cov txheej txheej, thiab cov nplaum.