物理增稠团状模塑料的制备及其性能研究  

STUDY ON PREPARATION AND PROPERTIES OF PHYSICALLY THICKENING BULK MOLDING COMPOUND

作　　者：徐鑫敏 胡明峰 张颂 季玲 夏宏伟 周权[1] XU Xin-min;HU Ming-feng;ZHANG Song;JI Ling(School of Materials Science and Engineering,East China University of Science and Technology,Shanghai 200237,China;Wuxi XinHongTai Electrical Appliance Technology Co,Ltd,Wuxi 214174,China)

机构地区：[1]华东理工大学材料科学与工程学院,上海200237 [2]无锡新宏泰电器科技股份有限公司,无锡214174

出　　处：《复合材料科学与工程》2020年第10期75-81,共7页Composites Science and Engineering

摘　　要：碱土金属体系增稠的团状模塑料通常需要熟化约7 d才能用于生产,生产成本高、效率低。本文使用物理增稠剂来替代碱土金属氧化物体系增稠剂制备团状模塑料并对其性能进行了研究分析。采用椎板粘度计对团状模塑料的树脂糊粘度进行测定,分析粘度随时间的变化情况;利用平板硫化机、万能拉力机、击穿仪、高阻计等对物理增稠剂制备的复合材料的力学性能、电学性能以及其他相关性能进行测试表征,研究了物理增稠剂对团状模塑料性能的影响。结果表明:物理增稠剂大大缩短了达到模压粘度所需的时间;其用量为不饱和树脂质量20%时的团状模塑料能够在24 h内达到模压所需粘度,而且改善了BMC的电性能,其流动性Dmin增加了6.4%,更加利于模压。It takes about 7 days to mature in the ordinary bulk molding compound(BMC)before it can be used for production.This leads to large inventory,high production cost and low efficiency,and also limits the development of BMC production and applications.In this paper,physical thickener was used instead of calcium hydroxide thickeners to prepare BMC composite material and the performance of BMC was studied and analyzed.The viscosity of the BMC′s resin paste was tested and characterized by the laminar viscometer,so the effect of physical thickener′s amount on the properties of the BMC was studied.Plate Vulcanizing Press Machine,Universal Tensile Testing Machine,Breakdown Voltage Test,high resistance meter are used to measure and characterize the mechanical properties,electrical properties,and other related properties of BMC,to study the effects of physical thickener on the properties of BMC.The results show that the thickening effect of the physical thickener on BMC is prominent,which significantly reduces the time needed for achieving the molding viscosity.The thickening effect of BMC when the physical thickener accounts for 20%of the UP mass is perfect,its viscosity reaches the required viscosity for molding after 24 hours of kneading preparation.When the viscosity meet the need of the molding pressure,the fluidity Dmin of bulk molding compound is increased by 6.4%,which is more conducive to molding.And the mechanical properties of BMC are only slightly reduced.So,physical thickener can improve the production efficiency of BMC and save the production cost.

关 键 词：团状模塑料 复合材料 椎板粘度计 凝胶时间 弯曲强度 

分 类 号：TB332[一般工业技术—材料科学与工程]