摘要
以液晶聚酯为基体树脂,研究三元乙丙弹性体(EPDM)和/或聚乙烯辛烯共弹性体(POE)为增韧剂,通过双螺杆挤出机熔融反应挤出,用马来酸酐使POE酸酐化生产接枝共聚物POE-g-MAH;然后,把接枝好的POE-g-MAH加到液晶聚酯中,用双螺杆挤出机造粒、注射机制样,制备了LCP/POE-g-MAH共混的样条,研究了LCP/POE-g-MAH=90/10、80/20、70/30、60/40、50/50(质量比)共混的冲击、拉伸强度等性能的影响。结果表明:POE对液晶聚酯有一定的增韧作用,提高了树脂的冲击强度,但是POE的用量也不是越多越好,POE达到一定的程度后,增韧的作用将降低,而且还会影响其他性能。
Take liquid crystalline polyester as base resin, EPDM and / or polyethylene octene elastomer （POE） as toughening agent, through a double screw extruder to melt reactive extrusion, use Maleic anhydride modified POE to produce graft copolymer POE-g-MAH; Then, the grafted POE-g-MAH is added to the liquid crystalline polyester, and the LCP/ POE-g-MAH blends are prepared by twin screw extruder granulation and injection mechanism. The effects of LCP/POE-g-MAH=90/10, 80/20, 70/30, 60/40 and 50/50 （mass ratio） on the impact strength and tensile strength of the blends are studied. The results show that POE has a certain toughening effect on liquid crystalline polyester. The impact strength of the resin is improved, but the amount of POE is not as much as possible. After the POE reaches a certain degree, the effect of toughening will be reduced, and the other properties will be affected.
作者
卢云丽
张小红
王坤
艾江
康永
Lu Yunli Zhang Xiaohong Wang Kun Ai Jiang Kang Yong(Shaanxi Jintai Chlor Alkali Chemical Co., Ltd., Yulin 718100, Shaanxi, China)
出处
《橡塑技术与装备》
CAS
2017年第4期9-13,共5页
China Rubber/Plastics Technology and Equipment
关键词
液晶聚酯
增韧改性
力学性能
接枝
liquid crystalline polyester
toughening modification
mechanical property
grafting
