摘要
采用二苯基甲烷二异氰酸酯(MDI-100、MDI-50)、液化MDI(LMDI)与聚己内酯二醇PCL-2102合成的半预聚物为A组分,R组分中的反应性原料为端氨基聚醚D2000、聚醚二醇TDiol-2000、聚己内酯二醇PCL-2202中的一种以及芳香族二胺E-100,通过H-XP3型聚脲喷涂机制备了几种喷涂聚氨酯脲弹性体。讨论了A组分NCO含量和异氰酸酯种类、R组分中低聚物种类对聚氨酯脲弹性体玻璃化转变温度及力学性能等的影响,并与极地条件的指标要求进行对比。结果表明,A组分NCO质量分数为12.6%,异氰酸酯采用MDI-50,R组分采用D2000时,制备的喷涂聚脲弹性体拉伸强度为12.3 MPa,断裂伸长率为605%,撕裂强度为65 kN/m,玻璃化转变温度为-68℃,可满足极地条件下的使用需求。
The semi-prepolymer(component A)was synthesized by diphenylmethane diisocyanate(MDI-100,MDI-50),liquefied MDI(LMDI)and polycaprolactone glycol PCL-2102.The reactive raw materials in component R were aromatic diamine E-100 and a oligomer selected from amino-terminated polyether D2000,polyether glycol TDiol-2000,and polycaprolactone glycol PCL-2202.Then,several spray polyurethane urea elastomers were prepared by H-XP3 polyurea spraying machine.The effects of NCO content and the type of diisocyanate in component A,and oligomer types in component R on the glass transition temperature and mechanical properties of the polyurethane urea elastomer were discussed,and compared with the requirements for polar conditions.The results showed that,when the NCO content of component A was 12.6%,the isocyanate was MDI-50,and the oligomer used in component R was D2000,the tensile strength of sprayed polyurea elastomer was 12.3 MPa,the elongation at break was 605%,the tearing strength was 65 kN/m and the glass transition temperature was-68℃.It could meet the needs of use in polar conditions.
作者
赵伊
曹京宜
吕晓峰
方志刚
陈酒姜
孙汉军
ZHAO Yi;CAO Jingyi;LYU Xiaofeng;FANG Zhigang;CHEN Jiujiang;SUN Hanjun(Unit 92228,People's Liberation Army,Beijing 100072,China;Marine Chemical Research Institute Co.Ltd,State Key Laboratory of Marine Coatings,Qingdao 266071,Shandong,China)
出处
《聚氨酯工业》
CAS
2023年第3期21-23,共3页
Polyurethane Industry
关键词
耐低温
喷涂聚脲弹性体
聚氨酯脲
玻璃化转变温度
low temperature resistant
spray polyurea elastomer
polyurethane urea
glass transition temperature
