DECOMPOSITION OF CARBON FIBER/PHENOLIC COMPOSITES USING SUPERCRITICAL WATER
-
摘要: 对碳纤维/酚醛复合材料的分解回收处理进行了探索研究。采用超临界水为反应介质,在400 ℃,NaOH水溶液的浓度为1 mol/L,反应时间30 min,填充率为0.62时,基体树脂的分解率达到75 %。质谱和气相色谱分析表明,分解产物为多种含苯环的物质,其中苯酚、甲基苯酚的含量在分解产物中达到33 %。随着反应温度和反应时间的增加,复合材料的分解率增加。SEM分析表明:分解后纤维表面光滑,没有树脂层,可以看出分解作用的效果。
-
关键词:
- 超临界水 /
- 碳纤维/酚醛树脂复合材料 /
- 分解
Abstract: The recycle treatment of carbon fiber/phenolic composites is investigated. Using the supercritical water as the action agent,when the temperature was 400 ℃, the concentration of NaOH was 1 mol/L, the reaction time was 30 min, and the filling rate was 0.62, the rate of decomposition reached 75 %.The gas chromatography and mass spectrometry analysis of the decomposition product indicate that they are the substance containing the benzene structure where the content of phenol and methyl phenol is 33 %. The rate of decomposition increases with the increase of action temperature and time. The SEM analysis of the decomposed sample shows that the surface of fiber is smooth, which indicates the considerable decomposition effect.-
Key words:
- supercritical water /
- carbon fiber/phenolic composites /
- decomposition
点击查看大图
计量
- 文章访问数: 1416
- PDF下载量: 950
- 被引次数: 0