气辅成型汽车把手注塑件抗拉强度  

Tensile Strength of Gas-Assisted Molding Automobile Handle

作　　者：李义[1] 梁继才[1] 丁立波 张景民[1] 陈立恒[1] 

机构地区：[1]吉林大学材料科学与工程学院,长春130022 [2]大安市技工学校,吉林大安131300

出　　处：《吉林大学学报（工学版）》2005年第2期141-144,共4页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家科技攻关项目(2004BA907Z19 2);吉林省科技厅自然基金资助项目(20020614).

摘　　要：介绍了气辅成型的工艺过程和技术特点;分析了气辅成型工艺对聚合物熔体形态分布的影响。并对汽车把手件气辅成型制品和传统注塑成型制品的抗拉强度和抗弯强度进行了比较。结果表明:在相同注射压力、模具温度、试验材料的条件下,气辅制件的抗拉强度明显高于传统注塑制件的抗拉强度,两者的抗拉强度之比约为 1.7∶1;气辅成型制件的抗弯强度也比传统注塑制件有所提高。同时作者还分析了气辅制件强度提高的机理。The molding process and features of gas-assisted injection molding were introduced, and the influence of gas-assisted injection molding process on polymer melting topology distribution was discussed. The tensile strength and bending strength of gas-assisted molding automobile handle were compared with conventional injection molding. The results show that the tensile strength of gas-assisted part is higher than conventional molding part under when injection force, mould temperature, and experiment of materials are same. Their ratio is 1.7∶1. The bend strength of gas-assisted part is little higher than conventional molding part. The mechanism of improving the strength of gas-assisted part was also analysed.

关 键 词：材料合成与加工工艺 气辅成型 汽车把手 抗拉强度 

分 类 号：TG386[金属学及工艺—金属压力加工]