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首页> 外文期刊>Journal of Polymers and the Environment >Kinetics of Recycling CF/EP Composites by Thermal Excitation of Cr_2O_3
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Kinetics of Recycling CF/EP Composites by Thermal Excitation of Cr_2O_3

机译：Cr_2O_3的热激发循环CF / EP复合材料的动力学

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摘要

Recycling high performance carbon fibers (CFs) by thermal excitation of Cr2O3 semiconductor was proposed. The kinetic model of decomposition of epoxy resin was established and the method for solving kinetic parameters was proposed. The influences of temperature and treatment time on the decomposition rate of epoxy resin were investigated. The kinetic equation was established and the accuracy was verified experimentally. The morphology of the recycled CF was observed and monofilament tensile strength was determined. Results indicated that temperature and treatment time had positive correlation with decomposition rate of the epoxy resin. The reaction order n was 1.5, with excitation energy E of 85.03kJmol(-1) and pre-exponential factor k(0) of 1.26x10(6)min(-1). The established kinetic equation could be used to estimate the temperature and treatment time. Prolongation of treatment time could improve the monofilament tensile strength. The monofilament tensile strength of the recycled CF at 480 degrees C for 30min was 102.72% of that of the original CF, indicating that surface heat treatment was performed on CF during the recycling process.
机译：提出了通过热激发Cr2O3半导体回收高性能碳纤维（CFs）。建立了环氧树脂分解的动力学模型，提出了求解动力学参数的方法。研究了温度和处理时间对环氧树脂分解速率的影响。建立了动力学方程，并通过实验验证了精度。观察回收的CF的形态并确定单丝抗张强度。结果表明，温度和处理时间与环氧树脂的分解速率呈正相关。反应阶数n为1.5，激发能E为85.03kJmol（-1），预指数因子k（0）为1.26x10（6）min（-1）。建立的动力学方程可以用来估计温度和处理时间。延长处理时间可以提高单丝的抗张强度。回收的CF在480摄氏度下持续30分钟的单丝拉伸强度为原始CF的102.72％，表明在回收过程中对CF进行了表面热处理。

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