OALib Journal期刊
V-POSS/UPR非等温固化动力学与物理性能
, PP. 15-21
Keywords: 笼型倍半硅氧烷 ,不饱和聚酯 ,动力学 ,复合材料
Abstract:
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17.6MPa，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。
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