摘要
将酚醛乙烯基酯树脂 (NVE)和高交联密度型乙烯基酯树脂 (HCLVE)进行了共混改性 ,采用DSC研究了共混体系的固化反应过程 ,并通过拉挤成型工艺制备出树脂基碳纤维单向复合材料 ,研究了复合材料的弯曲性能、层间剪切强度、热机械性能及热失重性能。结果表明 ,两种不同结构的乙烯基酯树脂形成热力学共溶体系 ,共混体系的反应活性介于两者之间 ,可改善拉挤工艺性 ;随着NVE用量的增加 ,复合材料的弯曲强度、层间剪切强度明显提高 ;而随着HCLVE用量的提高 ,动态储能模量E′值逐渐提高 ,复合材料的Tg 按照混合法则呈线性增加。
The curing kinetics of a blended resin consisting of a novolac vinyl ester (VE) and a highly cross-linked VE was studied by means of DSC. The blended resin matrix composites reinforced by carbon fibers (CFRP) were manufactured by pultrusion process. The flexural properties, inter lamianr shear strength (ILSS), dynamic thermal mechanical properties and thermo-gravimetric analysis (TGA) thermogram of the composites were studied. The results showed that the blending of two different types of VE resulted in a thermal dynamic compatible system, the reactivity of the system was between those of NVE and HCLVE, and the pultrusion property of the system was improved. So the method of blending different resins is an effective way to improve the comprehensive properties, such as mechanical properties, heat resistance and processability, of the composites.
出处
《塑料工业》
CSCD
北大核心
2004年第1期10-12,16,共4页
China Plastics Industry
基金
国家 8 63计划资助项目 (2 0 0 1AA3 3 5 0 3 0 )
