摘要
分别用PET短纤维和硅灰石 (无机针状晶须 )增强甲基乙烯基硅树脂 ,研究了纤维长度、含量与复合材料力学性能的关系 ,并考察了增强纤维对硅树脂热稳定性的影响。结果表明 :PET短纤维增强硅树脂复合材料的拉伸强度、模量和硬度显著提高 ,断裂伸长率下降 ;PET纤维长径比在 1 80～ 3 0 0范围内时 ,复合材料的拉伸强度最大 ;硅灰石增强的复合材料强度、模量及硬度提高相对较小 ,断裂伸长率随增强体用量增多 ,先增加而后降低 ,存在极大值 ;两类增强体均使复合材料的热稳定性提高。
The mechanical properties and thermal stability of short PET fiber and wollastonite reinforced silicone resin were studied respectively. The results showed that PET fiber composite had the largest tensile strength when the fiber aspect ratio was between 180～300. The tensile strength and modulus of the two kinds of composites were both increased with the fiber content. But PET fiber composites exhibited better mechanical properties. The elongation at break of PET fiber composites was decreased sharply even small amount of fiber was incorporated while that of wollastonite composites was first increased and then decreased with the filler content. It was found that both PET fiber and wollastonite could enhance the thermal stability of silicone resin.
出处
《功能高分子学报》
CAS
CSCD
2000年第1期6-10,共5页
Journal of Functional Polymers
