Tam sim no, TDI lossis MDI yog xaiv los ua cov ntaub ntawv raw tseem ceeb rau cov khoom lag luam pev, txawm tias tus kws kho mob roaming, elasticity, pu tawv nqaij tawv. HThem Nyiaj,Tog twg losTdiorMDI, nwsLub nplhaib BenzeneHauv TDI thiab MDIncaj qha txuassrau txawvisocyanesterpawg, thiab PI Bond tau txais conjugate nrog ze rau NCO. Nyob rau hauv tus light, tshav kub, oxygen, tshwj xeeb tshaj yog hluav taws xob hluav taws xob, nwstuaj yeem ua rau ammonia ester txuas decompositionthiabTsim cov duab uas muaj ntxhiab amine, uas tusBenzene Nucleustu tom qaboxidationCov. Qhov no yuav tsim cov chromophoric uas ua rau daj rau ntawm cov khoom siv PU PU thib ob.Tib neeg lub qhov muag yog rhiab heev rau xim, feem ntau yog ob peb ppm ntawm cov xim impurities yuav ua rau cov tsos ntawm cov khoom lag luam daj.
Txhawm rau kom daws cov teeb meem kev yoov tshaj plaws, cov qauv tseem ceeb tshaj yog siv HDI lossis IPDI hloov chaw tsis muaj kev sib txuas ntawm Benzene Ring thiab NCO. Tab sis tus nqi ntawm cov ntaub ntawv raw no xws li cov shortcomings: tus nqi kim dua, cov tshuaj tsis zoo, cov leeg tsis txaus .... Qhov no heev txwv kev txhawb nqa HDI ntawm PU.
Lwm txoj kev daws teeb meem yog txhawm rau sau cov roj hauv cov txheej txheem ntawm cov txheej txheem ntawm cov txheej txheem ntawm cov khoom lag luam thiab cia kom cais cov pa tawm ntau li ntau tau. Cov qauv zoo dua yog ntxiv rau cov tshuaj tua kab mob antioxidant thiabUV ABSORBER, uas tuaj yeem tiv thaiv kom zoo thiab ncua qhov tshwm sim ntawm PU daj.
Yihoo HN130 yog amine tiv thaiv daj dev tus neeg sawv cevCov. Nws'sRaws li cov roj khov kho hauv cov txheej txheem ntau lawm, muaj kev xaiv zoo rau nitric oxide (tsis muaj)thiabnitrogen dioxide (NO2),thiabTiv thaiv tau zooYellowing tshwm sim los ntawmRoj fumigating.
Yihoo HN130 tau siv dav hauv PUCov Ntaub Ntawv Moulding, cov ntaub ntawv qhia khau, yas, polyurethane fibers thiab polyurethane txheej, zoo heev txuas lub neej ntawm cov khooms.
Koj ib txwm zoo siab tos txais hu rau peb txog cov lus nug!
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Lub sijhawm Post: Nov-22-2021