摘要
六亚甲基四胺(乌洛托品)受热分解为二胺类物质,其通过与热塑性酚醛树脂的羟基进行缩合脱水,形成交联网状结构,发生固化反应。通过对热塑性酚醛树脂/固化剂的质量比进行单因素分析,重点研究其对酚醛模塑料的电绝缘性能、阻燃性能、力学性能和耐水性能的影响。结果表明,当热塑性酚醛树脂/固化剂的质量比为100/12时,制得的酚醛树脂模塑料的体积电阻率为1.27×10^(10)Ω·m,极限氧指数为30.20%,弯曲弹性模量为3910.46 MPa,冲击强度为1.9 kJ/m^(2),吸水率小于0.71%,表面接触角大于120°。
Hexamethylenetetramine(Urotropine)was decomposed into diamines by heating.It was dehydrated by condensation with hydroxyl group of thermoplastic phenolic resin to form cross-linked network structure,and curing reaction takes place.Through the single factor analysis of the mass ratio of thermoplastic phenolic resin to curing agent,the effects of the mass ratio on the electrical insulation,flame retardancy,mechanical properties and water resistance of phenolic molding compound were studied.The results show that when the mass ratio of thermoplastic phenolic resin to curing agent is 100/12,the volume resistivity,limiting oxygen index,flexural modulus,impact strength,water absorption and surface contact angle of the phenolic resin molding compound are 1.27×10^(10)Ω·m,30.20%,3910.46 MPa,1.9 kJ/m^(2),0.71%and 120°,respectively.
作者
吉康
卢禹彤
王浏浏
张伟
张德荣
Ji Kang;Lu Yutong;Wang Liuliu;Zhang Wei;Zhang Derong(Key Laboratory of Wood Materials Science and Application,Ministry of Education,Beijing Key Laboratory of Wood Science and Engineering,Beijing Forestry University,Beijing 100083,China)
出处
《工程塑料应用》
CAS
CSCD
北大核心
2021年第5期137-142,共6页
Engineering Plastics Application
基金
中央高校基本科研业务费专项(2016ZCQ01)。
关键词
酚醛模塑料
固化剂
质量比
电绝缘性能
阻燃性能
phenolic moulding plastic
curing agent
mass ratio
electrical insulation property
flame retardation
