长玻纤增强耐高温聚酰胺材料的性能研究  

Research on Properties of Long Glass Fiber Reinforced High-temperature Resistant Polyamide Materials

作　　者：张海生 陈剑锐 严春娟 ZHANG Haisheng;CHEN Jianrui;YAN Chunjuan(Shanghai PRET Composites Co.,Ltd.,Shanghai 201707,China;SAIC Volkswagen Automotive Co.,Ltd.,Shanghai 201805,China)

机构地区：[1]上海普利特复合材料股份有限公司,上海201707 [2]上汽大众汽车有限公司,上海201805

出　　处：《上海塑料》2022年第4期26-31,共6页Shanghai Plastics

摘　　要：基于生物基聚酰胺(PA5T)、低熔点聚酰胺树脂、非晶聚酰胺树脂、玻纤、阻燃剂、交联剂、抗氧剂、润滑剂等,通过熔融浸渍法制备了一系列长玻纤增强耐高温聚酰胺材料,并分析其力学性能、热性能、阻燃性能。对比了长、短玻纤增强耐高温聚酰胺材料的拉伸强度、弯曲模量、缺口冲击性能、热变形温度、蠕变性能和疲劳性能的差异。结果表明:低熔点聚酰胺和非晶聚酰胺可使材料的力学性能得到提升,同时在一定程度上降低其热变形温度;交联剂的加入和注塑件的辐照处理共同作用可显著提升材料的耐热性、阻燃性能、疲劳性能和蠕变性能;长玻纤增强耐高温聚酰胺材料的低温冲击性能、热氧老化拉伸强度保持率、耐疲劳和耐蠕变性能优势明显。A series of long glass fiber reinforced high-temperature resistant polyamide materials,based on bio-based polyamide(PA5T),low melting point polyamide resin,amorphous polyamide resin,glass fiber,flame retardant,cross-linking agent,antioxidant and lubricant,were prepared by melt impregnation method,and their mechanical properties,thermal properties and flame retardant properties were analyzed.The performance difference including tensile strength,flexural modulus,notch impact property,thermal deformation temperature,creep property and fatigue property between long and short glass fiber reinforced high-temperature resistant polyamide were compared.The results show that low melting point polyamide and amorphous polyamide can improve the mechanical properties of the composites,meanwhile,decrease its thermal deformation temperature to a certain extent.The adding of cross-linking agent and irradiation treatment of injection parts can significantly improve the heat resistance,flame retardant properties,fatigue properties and creep properties of composites.LGF reinforced high-temperature resistant polyamide materials have obvious advantages in low temperature impact property,tensile strength retention after thermal oxygen aging,fatigue resistance and creep resistance.

关 键 词：玻纤 聚酰胺 生物基 力学性能 

分 类 号：TQ323.6[化学工程—合成树脂塑料工业]