Ⅳ型储氢瓶PE-HD内胆热熔焊接工艺及性能评价  

Hot melt welding process and performance evaluation of type-Ⅳ hydrogen storage bottle PE-HD liner

作　　者：袁卓伟 杨明高 刘龚涵 马艺涛 肖剑 谢鹏程[2] YUAN Zuowei;YANG Minggao;LIU Gonghan;MA Yitao;XIAO Jian;XIE Pengcheng(Sinoma Science&Technology(Suzhou)Co,Ltd,Suzhou 215128,China;College of Mechanical and Electrical Engineering,Beijing University of Chemical Technology,Beijing 100029,China)

机构地区：[1]中材科技(苏州)有限公司,江苏苏州215128 [2]北京化工大学机电工程学院,北京100029

出　　处：《中国塑料》2023年第7期74-79,共6页China Plastics

摘　　要：采用注塑、挤出再焊接的分体成型工艺,有效降低了内胆一次成型的难度。通过热熔焊接实验,研究了加热温度、焊接时间、单位面积焊接压力对焊接性能的影响构效。测试了焊接样条的拉伸性能和冲击性能,并使用扫描电子显微镜对样条焊缝的微观结构进行观察。结果表明,塑性断裂是焊缝失效的主要形式,焊接样条的拉伸强度与母材一致,冲击强度有所提升。实验获得了最佳的焊接工艺参数,加热温度为240°C、焊接时间为60 s以及单位面积焊接压力为0.10 N/mm^(2),该工艺条件下制得的焊缝力学性能最佳。In this work,a split molding process involving injection molding,extrusion,and welding was proposed to effectively reduce the molding difficulty of the inner liner of type-IV hydrogen storage bottle.A hot-melt welding experiment was conducted to evaluate the effects of heating temperature,welding time,and unit area welding pressure on the quality of the welding line of the samples.The tensile and impact properties of the samples on the welding line were measured,and the microstructure of the fracture surface of the welding line was investigated using scanning electron microscopy.The results indicated that the plastic fracture was the main form for weld failure,and the tensile strength on the weld line was essentially the same as that of the base material.Furthermore,the impact strength became higher.The experiments also identified the optimal welding process parameters as a heating temperature of 240℃,a welding time of 60 s,and a unit area welding pressure of 0.10 N/mm^(2).Under this process condition,the optimal mechanical properties were obtained for the welding line.

关 键 词：Ⅳ型储氢气瓶 热熔焊接 单因素实验 力学性能测试 扫描电子显微镜分析 

分 类 号：TQ320.66[化学工程—合成树脂塑料工业]