废弃环氧树脂/聚酰胺复合材料的制备及性能研究  

Preparation and properties of waste epoxy resin/polyamide composite materials

作　　者：胡棚 徐豪 蔡少君[1] HU Peng;XU Hao;CAI Shaojun(School of Optoelectronic Materials&Technology,Jianghan University,Wuhan 430056,China)

机构地区：[1]江汉大学光电材料与技术学院,武汉430056

出　　处：《中国塑料》2024年第12期138-142,共5页China Plastics

基　　金：湖北省大学生创新创业训练计划项目(S202211072038)。

摘　　要：针对废弃环氧树脂(EP)回收处理困难的问题,将废弃环氧树脂作为填充材料用于聚酰胺66(PA66)的改性。通过熔融挤出的方法制备马来酸酐接枝PA66(PA66-g-MAH)用于增容,得到PA66-g-MAH/EP/PA66复合材料。分别通过万能力学试验机、热重分析仪、扫描电子显微镜等仪器对复合材料进行表征,探究不同相容剂含量对复合材料力学性能、热性能以及微观形貌的影响。结果表明,相容剂的加入可以改善体系的相容性,使复合材料的拉伸强度和弹性模量有一定程度提高;3%PA66-g-MAH/20%EP/PA66复合材料的综合力学性能最好,其拉伸强度为69.2 MPa,弹性模量为678.3 MPa;相容剂加入可以提高复合材料的初始分解温度和最大分解速率所对应温度。To address the difficulty in waste epoxy resin(EP)recycling,EP was used as a filling material for the modifica-tion of polyamide 66(PA66).PA66 grafted with maleic anhydride(PA66-g-MAH)was prepared as a compatibilizer through melt grafting for enhancing the compatibility between PA66 and EP.Then,PA66/EP/PA66-g-MAH com-pounds were prepared through melt extrusion and characterized by using universal mechanical testing machine,thermo-gravimetric analyzer,and scanning electron microscope.The effects of different compatibilizer content on their mechani-cal properties,thermal properties and microscopic morphology were investigated.The addition of PA66-g-MAH en-hanced the compatibility of the compounds,resulting in an increase in the tensile strength and elastic modulus.The PA66/20 wt%EP/3 wt%PA66-g-MAH compound exhibited the optimal comprehensive mechanical performance with tensile strength of 69.2 MPa and an elastic modulus of 678.3 MPa.Moreover,the addition of PA66-g-MAH also in-creased the initial decomposition temperature and the temperature corresponding to the maximum decomposition rate.

关 键 词：废弃环氧树脂 聚酰胺66 马来酸酐接枝聚酰胺66 改性 

分 类 号：TQ323.6[化学工程—合成树脂塑料工业]