Daim Ntawv Thov:

Toluene Diisocyanates yog siv feem ntau los tsim cov khoom siv polyurethane ua npuas kom siv tau rau hauv rooj tog, kev pw txaj, thiab tsheb thiab lub rooj dav hlau. Lwm yam, siv me me yog rau polyurethane elastomers (rau cov khoom siv tsheb, thiab kev ua si ncaws pob) thiab kev ua si sib xyaw ua ke, thiab kev ua haujlwm zoo siab tiv thaiv kab mob corrosion) (ICIS 2009). Toluene Diisocyanate-raws li cov neeg ua haujlwm ua kom nruj polyurethane ua npuas ncauj siv hauv cov tub yees tsev tub yees thiab cov lag luam hauv nkoj los yog ua lag luam hauv nkoj (Laminate daim ntawv (oorc 1986). "Ncuav-inplace" lossis "tshuaj tsuag-hauv" rigid ua npuas ncauj yog siv los ua rwb thaiv tsev rau cov tsheb thauj khoom, thiab cov thawv thauj khoom. Polyurethane-Hloov Cov Neeg Lij Vag muaj kwv yees li 6% rau 7% ormyanate, feem ntau yog siv cov ntaub ntawv txheej, xws li cov khoom txheej, ntoo ua tiav, thiab xim pleev xim rau. Cov tshuaj pleev cov dej noo yog siv los ua ntoo thiab cov pob zeb ua tiav. Lub dav hlau, tsheb, thiab cov caij nyoog caij tsheb feem ntau yog tsim los ntawm Toluene Diisocyanate Prepolymer Systems. Castable Utable Urethane elastomers siv rau hauv cov ntawv thov, thiab kev nqus cov roj, thiab cov kuab tshuaj, thiab ultraviolet hluav taws xob. Lawv tau siv nyob rau hauv cov nplaum thiab cov sib txuas ua ke thiab cov tsheb khau, cov log tsheb, pas dej, pas dej pas dej, thiab lub hnab ntshav. Lawv tseem siv inoil teb thiab cov mines. Qee cov khoom elastomer yog tsim los ntawm cov ntshiab 2,4 isomer es tsis yog 80:20 sib xyaw.

Cov pab pawg ua haujlwm hauv tdi hnov ​​nrog hydroxyl pawg ua npuas, uas tau siv hauv kev tsim cov khoom siv hauv rooj tog Lwm yam kev siv suav nrog polyurethane elastomers siv hauv cov khoom siv tsheb, nrog rau cov neeg siv khoom lag luam, ntoo, ntoo, thiab zoo siab rau cov tshuaj pleev xim). Tdi-based Rigid Polyurethane ua npuas dej yog siv nyob rau hauv cov tub yees hauv tsev kawm thiab rau cov vaj tsev tsim khoom xws li sheathing thiab ua lag luam vov tsev. TDI txau ceev yog siv los ua rwb thaiv tsev rau cov ciav hlau, tsheb ciav hlau thauj khoom thauj, thiab cov thawv txawv teb chaws. Cov dej noo-kho TDI cov txheej txheem yog siv los ua ntoo thiab cov pob zeb ua tiav.