摘要
研究了硅树脂复合材料高温下力学性能的变化。结果表明在温度高于500℃时层间剪切强度和拉伸强度降低明显,这是由于硅树脂热裂解和重组造成的。利用SEM分析了硅树脂复合材料室温和800℃时树脂与纤维的界面变化。研究了硅树脂基复合材料在不同温度下热膨胀系数,结果表明500℃是它的机械性能和热性能的转折点。
The mechanical properties of polysiloxane composites at high temperature were investigated.The results showed that tensile strength and interlaminar shear strength（ILSS） obviously decreased when temperature was above 500 ℃ since polysiloxane was decomposited and recombined intensively.Meanwhile the interface structure of the composites at 800 ℃ was investigated by means of SEM.Thermal expansion coefficients of polysiloxane composites at different temperature were investigated.It showed that the 500 ℃ was transition point for the mechanical and thermal properties.
出处
《混凝土》
CAS
CSCD
北大核心
2010年第11期32-34,共3页
Concrete
基金
江苏省高校自然基金(09KJB430002)
江苏大学高级人才基金(08JDG034)
关键词
硅树脂基复合材料
拉伸强度
热膨胀系数
界面
polysiloxane composites
tensile strength
thermal expansion coefficient
interface
