Cov qauv ntawm cov neeg rho nyiaj qeeb li cas yog qhov sib txawv ntawm cov khoom sib txawv ntawm cov khoom siv me me, kom xaiv cov khoom siv me me, txhawm rau ua tib zoo txiav txim siab thiab xaiv.
Xaiv cov amines
Cov khoom noj uas zoo tshaj plaws uas siv rau cov kab mob hauv ntiaj teb, muaj ntau yam tshuaj pleev ib ce 1.4-Butanediol, thiab lwm yam.
Cov dej cawv me me tuaj yeem siv los ua cov saw sib txuas lossis cov neeg muaj dej cawv me me no tuaj yeem haus TDI. Qhov tshwm sim yog: Ntawm ib sab tes, TDI Performance index txo qis, thiab ntawm qhov tod tes, nws yog qhov yooj yim rau kev ua kom cov txhuam cev.
Cov khoom lag luam loj tshaj plaws hauv kev ua lag luam hauv tsev yog lub ethylene glycol raws li cov txiaj ntsig ntawm sanya ethyl romyl diam hlau thiab ua npuas nrog zoo li cov amines. Txhawm rau kom ntseeg tau catalytic muaj peev xwm, nce cov tshuaj tua neeg. Qhov no hom ntawm catalyst muaj ntau tus naj npawb ntawm cov molecule me me yuav haus ntau dhau tdi. Yog hais tias tus nqi ntawm TDI tsis hloov kho, tus txhuam hniav yuav ua mos mos thiab lub siab nyiam kom hws thiab ntuag lub zog qeeb ntawm no amine tsis zoo.
Qee lwm cov amines kuj tseem tau rov qab tau qeeb, xws li 9727, thiab lwm yam yuav tsum raug pom zoo rau lub caij ntuj no, tab sis lawv yuav tsum tau muab ntxiv rau kev ua npuas dej kom zoo nkauj.
Xaiv cov tin
Nws raug nquahu kom siv Dibutyltin Lub Ob Hlis Ntuj cinnamic acid.itiet yog siv los ua kom muaj qhov sib txawv, tab sis tsis txaus ntseeg, uas muaj cov ntawv tsis zoo, uas muaj cov ntawv tsis zoo, Cov khoom.T {{{{{}}} 9 yog qhov yooj yim rau hydrolyze, thiab qeeb rov qab nws tus kheej pib qeeb (qhov dav dav tswj lub sijhawm yog li 160 vib nas this). Yog tias nws tau sib chwv dej ntev ntev, nws yuav cuam tshuam ib feem ntau hydrolyzed, nws pib, matures zoo, thiab muaj cov khoom zoo tshaj plaws.
Qhov nro ntawm daim txhuam cev tsis zoo, nws raug nquahu kom siv cov kab sib dhos maj mam, cov tshuaj yuav raug txo kom zoo li 0.001-0.4 ntu. catalysts, nws raug nquahu kom hloov tin nrog bismuth naphthanate.
daim duab
Xaiv cov roj silicone
Ib txwm ua kom qeeb li Silicone roj yog B8002, thiab nws cov tshuaj muaj ntau ntxiv.Yog}} 2}}}} {}}}}}}}}}}}}} {}} Tom qab tag nrho, kev ua si ntawm L-580 yog tus muaj siab.