| PICA中的酚醛树脂热分解机理 |
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| 引用本文： | 柳云钊,师建军,王筠,冯志海,杨云华.PICA中的酚醛树脂热分解机理[J].宇航材料工艺,2016,46(6):68-73, 78. |
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| 作者姓名： | 柳云钊 师建军 王筠 冯志海 杨云华 |
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| 作者单位： | 航天材料及工艺研究所,先进功能复合材料技术重点实验室,北京 100076,航天材料及工艺研究所,先进功能复合材料技术重点实验室,北京 100076,航天材料及工艺研究所,先进功能复合材料技术重点实验室,北京 100076,航天材料及工艺研究所,先进功能复合材料技术重点实验室,北京 100076,航天材料及工艺研究所,先进功能复合材料技术重点实验室,北京 100076 |
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| 摘 要： | 采用TG-FTIR和Py GC-MS联用仪对PICA中酚醛热分解过程和产物进行分析和研究,结果表明,PICA酚醛存在两个明显热失重阶段。第一阶段失重为酚醛小分子解吸附过程,主要为H2O、CO2和HOCH2CH2OH分子;第二阶段主要是由酚醛化学键断裂反应引起,为主要热分解阶段,产物主要为酚类、苯系物和稠环芳烃。经过高温热解后,酚醛基体与高孔隙率碳纤维增强体结合形成疏松多孔且具有一定强度的碳层结构。
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| 关 键 词： | PICA 酚醛树脂 热分解机理 TG-FTIR PyGC-MS |
| 收稿时间： | 2016/3/25 0:00:00 |
| 修稿时间： | 2016/3/25 0:00:00 |
Pyrolysis Mechanism of PICA Phenolics |
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| LIU Yunzhao,SHI Jianjun,WANG Yun,FENG Zhihai and YANG Yunhua.Pyrolysis Mechanism of PICA Phenolics[J].Aerospace Materials & Technology,2016,46(6):68-73, 78. |
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| Authors: | LIU Yunzhao SHI Jianjun WANG Yun FENG Zhihai and YANG Yunhua |
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| Institution: | Science and Technology on Advanced Functional Composites Laboratory,Aerospace Research Institute of Materials & Processing Technology,Beijing 100076,Science and Technology on Advanced Functional Composites Laboratory,Aerospace Research Institute of Materials & Processing Technology,Beijing 100076,Science and Technology on Advanced Functional Composites Laboratory,Aerospace Research Institute of Materials & Processing Technology,Beijing 100076,Science and Technology on Advanced Functional Composites Laboratory,Aerospace Research Institute of Materials & Processing Technology,Beijing 100076 and Science and Technology on Advanced Functional Composites Laboratory,Aerospace Research Institute of Materials & Processing Technology,Beijing 100076 |
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| Abstract: | The pyrolytic process and volatiles of PICA porous phenolics at different stages were investigated by TG-FTIR and PyGC-MS.The results demonstrated that PICA porous phenolics presented two evident weight loss processes.The desorption of small molecules of PICA porous phenolics took place during the first process and H2O,CO2,HOCH2CH2OH are the main volatiles.The molecular chain of porous phenolics broke up and phenols,benzene series,fused ring aromatics evolved during the second process and it is the main stage of thermal degradation. After high-temperature pyrolysis loose and porous char with a certain strength is formed by the combination of porous phenolics matrix with high porosity carbon fiber reinforcement. |
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| Keywords: | PICA Porous phenolics Pyrolysis mechanism TG-FTIR PyGC-MS |
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