高熔体强度聚丙烯对短玻纤增强聚丙烯性能的影响  

Effects of High Melt Strength Polypropylene on Properties of Short Glass Fiber Reinforced Polypropylene

作　　者：陈延安 谢正瑞 李国明 CHEN Yan’an;XIE Zhengrui;LI Guoming(Shanghai Kingfa Sci.&Tech.Dvpt.Co.,Ltd.,Shanghai 201714,China;Shanghai Engineering Research Center of Functionalizing Engineering Plastics,Shanghai 201714,China;Kingfa Sci.&Tech.Co.,Ltd.,Guangzhou 510520,China)

机构地区：[1]上海金发科技发展有限公司,上海201714 [2]上海工程塑料功能化工程技术研究中心,上海201714 [3]金发科技股份有限公司,广州510520

出　　处：《上海塑料》2022年第1期49-53,共5页Shanghai Plastics

摘　　要：考察了高熔体强度聚丙烯树脂对玻纤增强聚丙烯材料高温力学性能和拉伸蠕变性能等的影响,并进行平板流变分析及材料微观形貌测试。结果表明:随着高熔体强度聚丙烯质量分数增加,材料弯曲强度和高温拉伸强度降低,高温拉伸的断裂伸长率增加;高熔体强度聚丙烯树脂的添加可以改善材料的高温耐蠕变性能,添加质量分数为20%的高熔体强度聚丙烯树脂后,材料在120℃下耐蠕变断裂时间增加2倍。The effects of high melt strength polypropylene resin on the high temperature mechanical properties and tensile creep properties of glass fiber reinforced polypropylene material were investigated,and the plate rheological analysis and micro morphology were tested.The results show that with the increase of mass fraction of high melt strength polypropylene,the flexural strength and high temperature tensile strength decrease,and the elongation at break increases.The addition of high melt strength polypropylene resin can improve the high temperature creep resistance of the material.After adding 20%high melt strength polypropylene resin,the creep fracture time of the material at 120℃increases by 2 times.

关 键 词：聚丙烯 蠕变 流变 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]