利用PA的结晶原理解决塑件常见成型缺陷  

Solutions to prevent the molding defects via the crystallization principle of PA

作　　者：蒋贤志 王大中 严志云 关安南 

机构地区：[1]金发科技股份有限公司产品研发中心塑料改性与加工国家工程实验室,广东广州510520

出　　处：《模具工业》2011年第12期71-73,共3页Die & Mould Industry

摘　　要：对尼龙基材(PA)的结晶速度、顶出部位的强度进行了应用分析,依据材料的性能进行改模或调整工艺,解决了因材料的结晶速度不同,导致成型过程中同一副模具换不同品种的PA时,用同一周期生产,却产生顶穿、发白、起皮、熔接痕强度不够等问题。Some application analysis was carried out on the crystallization rate and strength of nylon（PA） when being ejected.The mould was modified and the process was adjusted based on the material properties,in which the defects such as the ejection through,blanch,peeling and low strength of weld lines due to various crystallization rates of differ ent PA materials can be prevented.

关 键 词：注射成型 尼龙 结晶速度 粘模 起皮 熔接痕 

分 类 号：TG241[金属学及工艺—铸造] TQ320[化学工程—合成树脂塑料工业]