含硅芳炔树脂的热性能和玻璃化转变温度研究
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摘要
采用热失重分析、差热分析和动态力学分析等方法对含硅芳炔树脂(PSA-1)和改性含硅芳炔树脂(PSA-1B)进行了氮气氛下的800℃热失重率、空气氛下的热失重达到5%时的温度(Td5)和玻璃化转变温度(Tg)等性能的表征研究。研究结果表明,PSA-1和PSA-1B氮气氛下的800℃热失重率分别为9.23%和12.16%,空气氛下的Td5分别为542.5℃和537.5℃。分析认为,上述两种含硅芳炔树脂的高温耐热性能优异,其中PSA-1的高温热性能略优于改性含硅芳炔树脂(PSA-1B),两者均可作为高温耐烧蚀复合材料树脂基体使用。同时,PSA-1和PSA-1B的玻璃化转变温度均高于500℃,分析认为,上述两种含硅芳炔树脂具有良好的工艺性能和优良环保性。
Thermal properties such as weightlessness rate at 800℃ in nitrogen,temperature at 5% thermal weightlessness(Td5)in air and glass-transition temperature(Tg) of silicon-containing arylacetylene resin(PSA-1) and modi?ed silicon-containing arylacetylene resin(PSA-1 B) were characterized by thermal weightlessness,differential scanning calorimeter and dynamic mechanical analysis. The results show that weightlessness rate at 800℃ in nitrogen of PSA-1 and PSA-1 B is respectively 9.23% and 12.16%,Td5 in air of the above two resins is respectively 542.5℃ and 537.5℃. Analysts believe that high temperature thermal performance of the above two silicon-containing arylacetylene resins is excellent enough to be the resin matrix of ablative composites. High temperature thermal performance of PSA-1 is slightly better than that of PSA-1 B. At the same time,glass-transition temperature of PSA-1 and PSA-1 B is both above 500℃. Analysts believe that the above two silicon-containing arylacetylene resins have good environmental performance and process performance.
Thermal properties such as weightlessness rate at 800℃ in nitrogen,temperature at 5% thermal weightlessness(Td5)in air and glass-transition temperature(Tg) of silicon-containing arylacetylene resin(PSA-1) and modi?ed silicon-containing arylacetylene resin(PSA-1 B) were characterized by thermal weightlessness,differential scanning calorimeter and dynamic mechanical analysis. The results show that weightlessness rate at 800℃ in nitrogen of PSA-1 and PSA-1 B is respectively 9.23% and 12.16%,Td5 in air of the above two resins is respectively 542.5℃ and 537.5℃. Analysts believe that high temperature thermal performance of the above two silicon-containing arylacetylene resins is excellent enough to be the resin matrix of ablative composites. High temperature thermal performance of PSA-1 is slightly better than that of PSA-1 B. At the same time,glass-transition temperature of PSA-1 and PSA-1 B is both above 500℃. Analysts believe that the above two silicon-containing arylacetylene resins have good environmental performance and process performance.
引文
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[3]黄琛,周燕,黄发荣.新型含硅芳炔树脂复合材料制备工艺[J].宇航材料工艺,2010(2):33-35.Huang Shen,Zhou Yan,Huang Farong.Preparation of new siliconcontaining arylacetylene resin composites[J].Aerospace Materials&Technology,2010(2):33-35.
[4]严浩,齐会民,黄发荣.新颖含硅芳基多炔树脂的合成与性能[J].石油化工,2004,33(9):880-883.Yan Hao,Qi Huimin,Huang Farong.Synthesis and characterization of poly(arylene acetylene)containing dimethylsilylene[J].Petrochemical Technology,2004,33(9):880-883.
[5]Huang Jianxiang,Wang Fan,Qi Huimin,et al.Synthesis and characterization of poly(dimethylsilylene-ethynylenephenyleneethynylene)terminated with phenylacetylene[J].Polymer Bulletin,2006,56:19-26.
[6]丁学文,齐会民,庄元其.芳基乙炔聚合物固化反应动力学和结构表征[J].华东理工大学学报,200l,27:161.Din Xuewen,Qi Huimin,Zhuang Yuanqi.Curing kinetics and structure characterization of arylacetylene polymer[J].Journal of East China University of Science And Technology,200l,27:161.
[7]刘志华,袁荞龙,黄发荣.苯并恶嗪共混树脂及其玻璃纤维布增强复合材料的制备与性能[J].复合材料学报,2013,30(4):13-21.Liu Zhihua,Yuan Qiaolong,Huang Farong.Preparation and properties of polybenzoxazine blends and their glass fabricreinforced composites[J].Acta Materiae Compositae Sinica,2013,30(4):13-21.
[8]徐美玲,石松,黄发荣.含硅芳炔树脂热裂解行为及动力学[J].玻璃钢/复合材料,2010(6):35-39.Xu Meiling,Shi Song,Huang Farong.Thermal pyrolytic behaviors and kinetics of silicon-containing arylacetylene resin[J].Fiber Reinforced Plastics/Composites,2010,(6):35-39.
[9]汤乐旻,周燕,田鑫.改性含硅芳炔树脂及其复合材料性能研究[J].玻璃钢/复合材料,2012(6):41-46.Tang Lemin,Zhou Yan,Tian Xin.Investigation on properties of a modified silicon-containing arylacetylene resin and its composites[J].Fiber Reinforced Plastics/Composites,2012(6):41-46.
[10]童旸,杜峰可,袁荞龙.含硅芳炔树脂/含官能团苯并噁嗪共混树脂的性能与应用[J].绝缘材料,20l6,49(10):24-28.Tong Yang,Du Fengke,Yuan Qiaolong.Application and properties of silicon-containing arylacetylene resin and benzoxazine with functional groups blend[J].Insulating Materials,20l6,49(10):24-28.
[11]Torre L,Kenny J M,Maffezzoli A M.Degradation behavior of a composite material for thermal protection systems[J].Part I-Experimental characterization,Journal of Materials Science,1998(33):3 137.
[12]Higari M A,Birckner E,Heise B,et al.J Polym Sci:Part A:Polym Chem,1999,37,4 442.