摘要
以二苯基甲烷二异氰酸酯、聚丙二醇、聚氧化丙烯二胺、二乙基甲苯二胺和4,4′-二仲丁氨基二苯甲烷为主要原料,3-缩水甘油氧基丙基三甲氧基硅烷改性纳米微晶纤维素为增强材料制备了纳米微晶纤维素增强聚脲。采用傅里叶变换红外光谱仪、X射线衍射仪、扫描电子显微镜和冲击试验机等对纳米微晶纤维素增强聚脲进行了表征。研究结果表明,聚脲中纳米微晶纤维素含量为0.4%时聚脲拉伸强度达到85 MPa,断裂伸长率43%,冲击强度达40.3 kJ/m^(2),纳米微晶纤维素增强后的聚脲表现出良好的力学性能。
The modified polyurea was prepared by using diphenylmethane diisocyanate,polypropylene glycol,polyoxypropylene diamine,diethyltoluenediamine and 4,4′-bis-sec-butylaminodiphenylmethane as main raw materials,and nano-microcrystalline cellulose modified by 3-glycidoxypropyl trimethoxysilane as reinforcing material.The polyurea was tested and characterized by Fourier transform infrared spectrometer,X-ray diffractometer,scanning electron microscope and impact tester.The results show that when the content of nano-microcrystalline cellulose in polyurea was 0.4%,the tensile strength of polyurea reached 85 MPa,the elongation at break was 43%,and the impact strength reached 40.3 kJ/m^(2).The polyurea reinforced by nano-microcrystalline cellulose showed good mechanical properties.
作者
黄志波
侯传金
刘彦军
HUANG Zhibo;HOU Chuanjin;LIU Yanjun(School of Light Industry and Chemical Engineering,Dalian Polytechnic University,Dalian 116034,China)
出处
《功能材料》
北大核心
2025年第5期5187-5191,共5页
Journal of Functional Materials
基金
辽宁省自然科学基金(2019-MS-022)。
关键词
二苯基甲烷二异氰酸酯
聚脲
纳米微晶纤维素
硅烷偶联剂
力学性能
diphenyl methane diisocyanate
polyurea
nano-microcrystalline cellulose
silane coupling agent
mechanical property
