异氰酸酯对潜固化单组分聚脲性能的影响  

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

作　　者：王娜 李炳奇[2] 陈芝 宋禹泉 张均[1] 姜志国[1] Wang Na;Li Bingqi;Chen Zhi;Song Yvquan;Zhang Jun;Jiang Zhiguo(College of Materials Science and Engineering,Beijing University of Chemical Technology,Beijing 100029;China Institute of Water Resources and Hydropower Research,Beijing 100038)

机构地区：[1]北京化工大学材料科学与工程学院,北京100029 [2]中国水利水电科学研究院,北京100038

出　　处：《化工新型材料》2020年第7期181-183,187,共4页New Chemical Materials

摘　　要：采用甲苯二异氰酸酯(TDI)、二环己基甲烷二异氰酸酯(HMDI)、液化二苯基甲烷二异氰酸酯(MDI)和异氟尔酮二异氰酸酯(IPDI)制备单组分聚脲。通过红外光谱(FT-IR)、耐热性能、吸水率力学性能、表干时间和实干时间等测试,研究了异氰酸酯种类对单组分聚脲结构与性能的影响。结果表明:液化MDI型和TDI型单组分聚脲耐热性能较好,固化速度较快;HMDI型和IPDI型单组分聚脲的力学性能较好,吸水率较低。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.

关 键 词：异氰酸酯 单组分 聚脲 潜固化 [口恶]唑烷 

分 类 号：TQ323.8[化学工程—合成树脂塑料工业]