%0 Journal Article
%T 聚硼硅氮烷杂化芳炔基树脂制备及抗热氧化性能<br>Preparation and thermal-oxidation resistance of polyborosilazane hybrid polyarylacetylene resin
%A 王沪东
%A 郭康康
%A 周晖
%A 朱亚平
%A 王帆
%A 齐会民
%J 复合材料学报
%D 2016
%R 10.13801/j.cnki.fhclxb.20151126.001
%X 合成带乙炔基聚硼硅氮烷(PBSZ),并与含硅芳炔树脂(PSA)进行杂化制备聚硼硅氮烷杂化芳炔基(PBSZ/PSA)树脂,以改善芳炔基树脂的抗热氧化性能。采用FTIR、NMR和凝胶渗透色谱(GPC)对合成的PBSZ进行结构表征;采用旋转流变和DSC对PBSZ/PSA树脂的工艺性能进行研究;采用TGA、SEM和EDS对PBSZ/PSA树脂固化物的热稳定性和抗热氧化性能进行了研究。结果表明:PBSZ/PSA树脂具有良好的加工性能,树脂固化放热量较低,可在210℃下固化;树脂固化物在空气气氛1000℃下的残留率为38.0%,且其氧化后表面形成了60~80 μm厚致密的保护层,可起到良好的隔绝氧气作用;改性树脂固化物1200℃烧结物展现出优异的抗热氧化性能,烧结物1200℃氧化后表面形成约10 μm厚的致密陶瓷保护层,可有效地阻止氧气对材料的侵蚀。 Polyborosilazane with ethynyl group (PBSZ) was synthesized and hybrided with poly(silicon-containing arylacetylene) (PSA) resin to improve thermal-oxidation resistance of polyarylacetylene resin. The structure of PBSZ was characterized by FTIR, NMR and gel permeation chromatography (GPC). The processing properties of PBSZ/PSA resin were investigated by rotational rheometer and DSC, and the thermostability and thermal-oxidation resistance of PBSZ/PSA resin were examined by TGA, SEM and EDS. The results show that PBSZ/PSA resin offers good processability, and could be cured at 210℃ with low exothermal heat. The cured resin residual yields up to 38.0% at 1000℃ under air, and a dense protective layer about 60-80 μm thickness is formed after being oxidized, which inhibits the materials from being oxidized by oxygen. Besides, the sinter of cured resin by 1200℃ also has thermal-oxidation resistance, and a dense ceramic protective layer about 10 μm thickness is produced after being oxidized at 1200℃ and effectively keeps the materials from being oxidized by oxygen. 国家自然科学基金(90816021)
%K 聚硼硅氮烷
%K 芳炔树脂
%K 有机-无机杂化
%K 热稳定性能
%K 抗热氧化性能&lt
%K br&gt
%K polyborosilazane
%K polyarylacetylene resin
%K organic-inorganic hybrid
%K thermostability
%K thermal-oxidation resistance
%U http://fhclxb.buaa.edu.cn/CN/abstract/abstract13230.shtml