Influences of isocyanate on property of latent curing one-component polyurea

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  • 1. College of Materials Science and Engineering,Beijing University of Chemical Technology,Beijing 100029;
    2. China Institute of Water Resources and Hydropower Research,Beijing 100038

Received date: 2019-03-25

  Online published: 2022-11-01

Abstract

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.

Cite this article

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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