论文部分内容阅读
为了提高不饱和聚酯树脂(UPR)的性能,本文中以乙烯基笼型倍半硅氧烷(V-POSS)改性不饱和聚酯树脂,用非等温DSC法研究了UPR和5%V-POSS/UPR体系的固化反应动力学以及表观反应活化能与转化率之间的关系,测定了玻璃钢层压板的力学性能和电性能。结果表明,加入V-POSS固化反应Ea随反应程度增加而降低,通过使用两参数esták-Berggren(S-B)模型描述固化反应过程,得到了反应动力学方程。当V-POSS质量分数为5%时玻璃钢层压板拉伸强度达到最大值,提高了17.6 MPa,冲击强度随V-POSS加入量增加而降低,但在10%时冲击强度有所上升。层压板电性能随V-POSS加入量增加而提高,其中体积电阻率和表面电阻率提高1~2个数量级。
In order to improve the performance of unsaturated polyester resin (UPR), in this paper, V-POSS modified unsaturated polyester resin, non-isothermal DSC study UPR and 5% V -POSS / UPR system kinetics of curing reaction and the apparent reaction activation energy and the conversion rate between the determination of the mechanical properties of FRP laminates and electrical properties. The results showed that the reaction Ea with V-POSS decreased with the increase of the reaction, and the reaction kinetics equation was obtained by using the two-parameter esták-Berggren (S-B) model to describe the curing reaction. When the V-POSS content is 5%, the tensile strength of FRP laminates reaches 17.6 MPa, the impact strength decreases with the increase of V-POSS content, but the impact strength increases at 10%. The electrical properties of the laminate increase with the addition of V-POSS, of which volume resistivity and surface resistivity increase by 1 to 2 orders of magnitude.