摘要
采用纳米ZnO(nano-ZnO)对不饱和聚酯树脂(UPR)进行改性,研究nano-ZnO添加量对nano-ZnO/UPR复合体系综合性能的影响。结果表明:nano-ZnO对UPR具有明显的增强增韧作用,随着nano-ZnO添加量的增加,nano-ZnO/UPR复合体系的黏度和凝胶时间随之增大,拉伸强度、弯曲强度和冲击强度均呈先增大后减小的趋势,吸水率呈先减小后增大趋势,当添加量为5%时,nano-ZnO/UPR复合体系的综合性能最好,固化反应的表观活化能(E)为51.6 k J/mol,反应级数(n)为0.892。
Unsaturated polyester resin （UPR） was modified by nano-ZnO, and the effect of nano-ZnO addi- tion on the comprehensive properties of the nano-ZnO/UPR composite system was studied. The results show that the nano-ZnO has an obvious reinforcing and toughening effect on the UPR. With the increase of the nano-ZnO additive amount, the viscosity and gel time of the nano-ZnO/UPR composite system increase, the tensile strength, flexural strength, and impact strength increase at first and then decrease, and the water absorption decreases first and then increases. When the additive amount of nano-ZnO is 5%, the comprehensive properties of the nano-ZnO/UPR composite system are the best, the apparent activation energy（E） of curing reaction is 51.55 kJ/mol, and the reaction order（n） is 0.892.
出处
《绝缘材料》
CAS
北大核心
2015年第6期21-24,29,共5页
Insulating Materials
基金
广州市科技计划项目(20134400217)
