注射成型模具中胶料沿流道压力损失的研究  

Study on Pressure Loss of Compound along Runner in Injection Molding Mold

作　　者：曹广如 李勇 雷军玉[2] 李斌 林胜 刘文松[2] CAO Guangru;LI Yong;LEI Junyu;LI Bin;LIN Sheng;LIU Wensong(Zhuzhou Times Ruiwei Vibration Reduction Equipment Co.,Ltd,Zhuzhou 412007,China;Zhuzhou Times New Materials Technology Co.,Ltd,Zhuzhou 412007,China)

机构地区：[1]株洲时代瑞唯减振装备有限公司,湖南株洲412007 [2]株洲时代新材料科技股份有限公司,湖南株洲412007

出　　处：《橡胶工业》2023年第8期621-626,共6页China Rubber Industry

基　　金：湖南省科技成果转化与产业化项目(2020GK4062)。

摘　　要：对注射成型模具中胶料沿流道压力损失(简称胶料压力损失)进行研究。结果表明:胶料压力损失与胶料注射速度、胶料温度、流道长度、流道截面参数及胶料流变参数有关;在特定工艺参数(注射压力120 MPa、注射时间60 s、塑化温度70℃、模具温度160℃、注胶量220 mL)下,每经过10 mm流道长度,胶料压力损失为0.649 MPa;注射过程中胶料压力损失实测值小于理论计算值,稳定后的胶料压力损失误差在8 MPa内;胶料压力损失对胶料注射时间、塑化温度、模具温度较为敏感,注射时间越短,胶料压力损失越大,塑化温度、模具温度越高,胶料压力损失越小。The study on the pressure loss of the compound along the runner in the injection molding mold(referred to as the pressure loss of the compound)was introduced.The results showed that the pressure loss of the compound was related to the injection speed of the compound,temperature of the compound,runner length,runner cross-sectional parameters and rheological parameters of the compound.Under specific process parameters(injection pressure of 120 MPa,injection time of 60 s,plasticizing temperature of 70℃,mold temperature of 160℃and injection volume of the compound of 220 mL),the pressure loss of the compound was 0.649 MPa for every 10 mm runner length.The measured pressure loss of the compound during the injection process was smaller than theoretical calculation value,and the error of the stabilized pressure loss of the compound was within 8 MPa.The pressure loss of the compound was more sensitive to the injection time,plasticizing temperature and mold temperature.The shorter the injection time was,the greater the pressure loss of the compound was,and the higher the plasticizing temperature and mold temperature were,the smaller the pressure loss of the compound was.

关 键 词：注射成型模具 胶料压力损失 工艺参数 理论计算 实测 

分 类 号：TQ330.41[化学工程—橡胶工业]