HGB含量对SiO_2/PF复合材料性能的影响  

Effects of HGB Content on the Properties of SiO_2/ PF

作　　者：张麟[1] 刘锋[1] 李建[1] 马飞[1] 

机构地区：[1]西安航天复合材料研究所,西安710025

出　　处：《宇航材料工艺》2014年第3期58-61,共4页Aerospace Materials & Technology

摘　　要：采用模压成型复合材料层压板工艺,制备了HGB质量分数分别为0、3%、5%、10%的SiO2/PF复合材料,研究了HGB含量对其密度、热物理、烧蚀及力学性能的影响规律。结果表明,HGB加入可降低SiO2/PF密度,提高耐热、耐烧蚀及其力学性能。当HGB含量为5wt%时,体系密度为1.634 g/cm3;23℃时cp从1.062提高到1.137 J/(g·K),950℃时,质量保留率为82.08%;线烧蚀率和质量烧蚀率分别为91μm/s和66.9μg/s,降低了35.9%和20.1%;拉伸、弯曲和剪切强度分别提高了12.86%、21.50%和7.80%。SiO2/PF composite materials with HGB content of 0,3％,5％,10％ respectively were prepared.The effects of HGB content on the density,thermal physical properties,ablation resistance,thermal expansion properties,mechanical properties were investigated.The results show that,HGB addtion can reduce the SiO2/PF density,improve the heat resistance,ablation resistance and mechanical properties.When the HGB content is 5％,the system density is 1.634 g/cm3.At 23℃ cp increased from 1.062 to 1.137 J/（g·K）,950℃,quality retention rate is 82.08％.The linear ablation rate and mass ablation rate is 91 μm/s and 66.9 μg/s,about 35.9％ and 20.1％ lower than that of SiO2/PF.The tensile strength,the bending strength and the shear strength are increased by 12.86％,21.50％ and 7.80％.

关 键 词：SIO2 PF 中空玻璃微珠 隔热性能 烧蚀性能 力学性能 

分 类 号：TB3[一般工业技术—材料科学与工程]