摘要
本文采用GPC和TG对高残碳酚醛树脂(HCYPR)和硼酚醛树脂(BPR)的分子量及其分布、热失重特性进行了表征和对比。同时对比了S-2GFC/HCYPR和S-2GFC/BPR的力学性能和烧蚀性能。研究结果发现:与HCYPR相比,BPR的分子量更小,分布宽度更窄,与增强体的浸润性更好;BPR的800℃残碳率高于HCYPR;S-2GFC/HCYPR的质量烧蚀率要大于S-2GFC/BPR,但线烧蚀率小于后者。S-2GFC/BPR比S-2GFC/HCYPR强度的提高百分数从59.4%到73.9%不等,其中压缩强度提高了73.9%;模量的提高百分数从27.5%到31.9%不等,其中弯曲模量提高了31.9%。
Molecular weight, molecular weight distribution, and thennal loss of high char yield phenolic resin and Boron - phenolic resin were characterized and compared by GPC and TG. In the meantime, ablative properties and mechanical properties were compared between S - 2GFC/HCYPR and S - 2GFC/BPR. The results showed that Boron - phenolic resin had less molecular weight, less dispersity, better immersion capacity. In comparison with HCYPR, BPR had bigger Char yield at 800℃. Mass abla- tion rate of S - 2GFC/HCYPR was bigger than S - 2GFC/BPR, but linear ablation rate was less than the latter. Mechanical strength of S- 2GFC/BPR composites is better than that of S- 2GFC/HCYPR composites, ranging from 59.4% to 73.9%, of which compressive strength is 73.9% while Mechanical module of S - 2GFC/BPR composites is better than that of S - 2GFC/ HCYPR composites, ranging from 27.5% to 31.9%, of which flexual module is 31.9%.
出处
《纤维复合材料》
CAS
2008年第3期50-52,共3页
Fiber Composites
关键词
高残碳酚醛树脂
硼酚醛树脂
烧蚀性能
力学性能
High char yield phenolic resin
Boron- phenohc resin
Ablative properties
Mechanical properties
