摘要
在聚丙烯(PP)M20V中添加不同用量的过氧化物,并研究了注射工艺参数对不同熔体流动速率共聚PP力学性能的影响。结果表明:熔体温度、注射速度和保压时间都会影响最终制品的性能。其中,熔体温度对PP的性能影响很大,降低熔体温度,材料的冲击强度大幅提高,拉伸强度增大;提高注射速度,试样的弯曲强度和模量增大;延长保压时间会严重影响产品抗冲击性能。
Peroxide was added to polypropylene(PP)M20V in different amount to observe the effects of injection parameters on mechanical properties of copolymerized PP at different melt flow rates.The results show that the melt temperature,injection speed and holding time affect the properties of PP.The impact strength and tensile strength of the material are improved by reducing the melt temperature.The bending strength and modulus of the material are enhanced by accelerating the injection.The impact resistance of products can be affected by longer holding time.
作者
白弈青
吕芸
侴白舸
陈若石
徐毅辉
张师军
Bai Yiqing;Lv Yun;Chou Baige;Chen Ruoshi;Xu Yihui;Zhang Shijun(Beijing Research Institute of Chemical Industry,SINOPEC,Beijing 100013,China)
出处
《合成树脂及塑料》
CAS
北大核心
2019年第2期67-71,共5页
China Synthetic Resin and Plastics
基金
国家科技支撑计划课题(2016YFB0301901)
关键词
共聚聚丙烯
注射工艺
力学性能
抗冲击性能
copolymerized polypropylene
injection process
mechanical property
impact resistance
