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摘要
利用差热-热重同步分析仪研究层间增韧环氧树脂碳纤维单向带的热稳定性,研究在不同升温速率条件下该复合材料的失重温度和失重规律。研究结果表明,随着升温速率的提高,层间增韧环氧树脂碳纤维单向带每个阶段的初始分解温度、反应最终温度及最大失重速率温度均向高温方向移动,热解温度范围逐渐扩大,质量损失明显增加。分别应用微分法和积分法对样品进行热解动力学相关参数计算,计算结果表明,层间增韧环氧树脂碳纤维单向带整体活化能较高,分子间碰撞激烈,热分解反应不易进行,其热稳定性较高。
Abstract
The differential thermal-thermostatic analyzer was used to study the thermal stability of interlayer toughened epoxy carbon fiber unidirectional tape.The weight loss temperature and weightlessness of the carbon fiber epoxy composite at different heating rates were studied.The research results shown that with the increase of the heating rate,the initial decomposition temperature,the reaction final temperature and the maximum weight loss rate temperature in each stage move to the high temperature direction,the pyrolysis temperature range gradually expanded,and the mass loss increased significantly.The pyrolysis kinetics related parameters of the experimental samples were calculated using the differential method and the integral method,respectively.The differential equation and the integral method were used to calculate the parameters of the pyrolysis kinetics of the samples.The calculation results shown that the unidirectional band of the interlayer toughened epoxy resin carbon fiber had higher activation energy,intense collision between molecules,and the thermal decomposition reaction was difficult to carry out.Its thermal stability was higher.
关键词
碳纤维复合材料
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热重分析
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升温速率
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热解特性
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热解动力学
Key words
carbon fiber composite
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thermogravimetric analysis
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heating rate
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pyrolysis characteristics
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pyrolysis kinetics
层间增韧环氧树脂碳纤维单向带的热解特性及动力学研究[J].
化工新型材料, 2019, 47(10): 130-133 DOI:
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基金资助
辽宁省自然科学基金(201602567)
