Four kinds of one-component polyurea were prepared with toluene diisocyanate (TDI),dicyclohexylmethane diisocyanate (HMDI),liquefied diphenylmethane diisocyanate (MDI) and isophorone diisocyanate (IPDI).The effect of isocyanate types on the structure and performance of one-component polyure was evaluated through infrared spectroscopy,surface drying time,drying time,mechanical properties,water absorption,and thermogravimetric analysis test.The results showed that one-component polyurea based on liquefied MDI and TDI had better heat resistance and faster curing speed;one-component polyurea based on HMDI and IPDI had better mechanical properties and lower water absorption rate.
Wang Na, Li Bingqi, Chen Zhi, Song Yvquan, Zhang Jun, Jiang Zhiguo
. Influences of isocyanate on property of latent curing one-component polyurea[J]. New Chemical Materials, 2020
, 48(7)
: 181
-183
.
DOI: 10.19817/j.cnki.issn 1006-3536.2020.07.041
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