工艺参数对高光注射成型制品翘曲的宏观影响  

Macro-effect of process parameter on waspage of rapid heat cycle molding plastic part

作　　者：刘东雷[1,2] 申长雨[1] 刘春太[1] 辛勇[2] 孙玲[2] 

机构地区：[1]郑州大学国家橡塑模具工程研究中心,郑州450002 [2]南昌大学机电工程学院,南昌330031

出　　处：《吉林大学学报（工学版）》2012年第3期665-671,共7页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家自然科学基金项目(11172271);河南省重大科技专项项目

摘　　要：以线性、小变形、热弹模型Duhamel-Neumann方程为基础,研究了温度因素对高光(无痕)注射成型(Rapid heat cycle molding,RHCM)制品残余应力的影响。开发了车载高光蓝牙模具和温控辅助装置,研究了工艺参数对RHCM制品翘曲的宏观影响。结果表明:RHCM成型模温设定应该有上限值,在相同的模温下各参数在可行范围内设定条件下,对制品翘曲的影响由大至小依次为:保压时间、保压压力、熔体温度、注射压力、冷却时间。随着模温逐步升高,制品翘曲呈准线性减小趋势,且随着熔体温度和注射压力的升高而小幅度减小,随着保压压力的升高、保压时间和冷却时间的延长而小幅度'V'型波动,且均在塑料热变形温度附近达到极小值。Based on the linear infinitesimal deformation thermoelasticity model Duhamel-Neumann equation,the effects of temperature factors on the residual stress of plastic parts manufactured by the rapid heat cycle molding（RHCM） were studied.An on-board blue-tooth pront shell mold and a set of accurate temperature control device were developed,and the effect of mold temperature in RHCM on warpage of the part was investigated.The results showed that the mold temperature should be under an upper limit.Under the same mold temperature,for the parameters set in the feasible range,their effects on the warpage of RHCM part decrease according the the following order： pressure keeping time,pressure keeping value,meet temperature,injection pressure,and cooling time.With the increase of mold temperature,part warpage decreases quasi-linearly.The warpage shows a modest decrease with the increase of meet temperature and injection pressure,and demonstrates a small V shape fluctuation with the increase of pressure keeping value,pressure keeping time and cooling time.

关 键 词：材料合成与加工工艺 高光注射成型 工艺参数 翘曲变形 

分 类 号：TQ320.66[化学工程—合成树脂塑料工业]