卡车翼子板的滚塑成型技术  

Rotational Molding of Truck Fender

作　　者：梁策[1] 李义[1] 柳承德[1] 程小锋[1] 管东波[1] 李加成[1] 

机构地区：[1]吉林大学材料科学与工程学院,吉林长春130025

出　　处：《高分子材料科学与工程》2008年第8期112-115,共4页Polymer Materials Science & Engineering

基　　金：国家科技型中小企业创新基金项目(05C26212200389)

摘　　要：对卡车翼子板滚塑成型原料、工艺条件、制件和模具设计进行了研究。采用热氧老化法确定高密度聚乙烯(HDPE)和线性低密度聚乙烯(LLDPE)的最佳共混配比;通过研究加工热稳定性和制件的抗冲击强度两项指标确定最佳工艺条件;对制品结构及成型模具进行了优化设计,并进行了实验研究。结果表明:LLDPE/HDPE=70∶30可作为滚塑成型原料;最佳成型时间15 min,最佳成型温度290℃;制件壁厚为6 mm,近距平行壁距离为3倍壁厚,圆角处内表面半径为6.5 mm,外表面半径为3.2 mm,加强筋采用高度较小的多条平式加强筋;模具为铸铝合金材质。For rotational molded truck fender, raw material, processing conditions and the design of part and mold were studied. The optimal proportion of HDPE and LLDPE was determined by thermal oxidative aging method. The practical processing conditions were obtained by observing thermal stability and impact strength of parts. The experimental research resulted in the optimal structures of part and mold. Results indicate that the optimal HDPE and LLDPE proportion is 70 to 30; the practical molding time is 15 minutes and molding temperature is 290℃; the part thickness is 6 mm, and the close parallel walls, the fillet radius of inner surface and outer surface is 18 mm, 3.2 mm and 6.5 mm respectively; the material of the mold is aluminum.

关 键 词：卡车翼子板 滚塑成型 冲击强度 制品设计 模具设计 

分 类 号：TQ320.669[化学工程—合成树脂塑料工业]