复合材料科学与工程Issue(7)：74-82,9.DOI:10.19936/j.cnki.2096-8000.20260728.009
中间相沥青改性可陶瓷化硅橡胶复合材料性能及烧蚀层微观分析
Properties of mesinase pitch modified ceramifiable silicone rubber composites and microanalysis of ablation layers
吴李炜 1赵杨阳 1刘欣 1黄志雄 1王雁冰1
作者信息
- 1. 武汉理工大学 材料科学与工程学院,武汉 430070
- 折叠
摘要
Abstract
The ceramifiable silicone rubber was prepared by blending with silicone rubber as the matrix,molyb-denum silicide(MoSi2)as ablation-resistant filler,a glassy material as low melting point filler,and mesophase pitch(MP)as ceramisation-assisting reactive substance.The tensile strength of the composites at room temperature,the flexural strength of the composites after high-temperature heat treatments at 600℃,800℃,1 000℃,and 1 200℃,and the microscopic morphology and phase evolution of the ablated centre region after oxygen-acetylene flame ablation were tested.The effects of MP content on the mechanical properties,high-temperature oxidation resistance and abla-tion resistance of the ceramicisable silicone rubber composites were investigated.The results showed that the flexural strength of the pyrolysis product of the composite with 20 parts of MP added reached 9.54 MPa after heat treatment at 1 200℃,which was 55.9%higher than that of the composite without MP added.The microscopic morphology shows that the addition of MP can effectively improve the densification of the carbon layer,and the surface of the composite material gradually becomes flat with the increase of MP content,and cracks and holes are basically not observed on the surface.关键词
可陶瓷化硅橡胶/中间相沥青/陶瓷层结构/高温抗氧化性能/耐烧蚀性能Key words
ceramifiable silicone rubber/mesinase pitch/ceramic layer structure/high temperature oxidation resistance/ablation resistance分类
通用工业技术引用本文复制引用
吴李炜,赵杨阳,刘欣,黄志雄,王雁冰..中间相沥青改性可陶瓷化硅橡胶复合材料性能及烧蚀层微观分析[J].复合材料科学与工程,2026,(7):74-82,9.
