中国塑料2017，Vol.31Issue(9)：36-42,7.DOI:10.19491/j.issn.1001-9278.2017.09.005
乙烯-乙酸乙烯酯共聚物/聚甲醛动态硫化热塑性弹性体的制备
Preparation of Ethylene-vinyl Acetate/Polyacetal Thermoplastic Elastomers
沈晓洁 1李长皓 1朱静 1邱桂学1
作者信息
- 1. 青岛科技大学高分子科学与工程学院橡塑材料与工程教育部重点实验室,山东青岛266042
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摘要
Abstract
An ethylene-vinyl acetate/polyoxymethylene thermoplastic elastomer (TPV) was prepared by dynamic vulcanization method using Luperox231/HVA-2 mixture as a vulcanization system.Compared with classical EVA/POM blends,comprehensive mechanical properties of the TPV could be improved significantly,and its tensile strength reached around 12 MPa with low elongation at break.The experiments also suggested that screw speed and processing temperature of the extruder influenced mechanical properties of TPV.To prepare the TPV with good performance,the screw speed and temperature should be set at 250 r/rin and 145 ～ 175 ℃,respectively.The resultant TPV exhibited a decrease in tensile strength,elongation at break and D-Shore hardness with an increase of Luperox231 concentration,and however its tensile strength and permanent deformation presented a decreasing trend at first and then increasing with increasing concentration of HVA-2.关键词
聚甲醛/乙烯-乙酸乙烯酯共聚物/动态硫化热塑性弹性体/反应挤出/力学性能Key words
polyoxymethylene/ethylene-vinyl acetate copolymer/thermoplastic vulcanization/reactive extrusion/mechanical property分类
化学化工引用本文复制引用
沈晓洁,李长皓,朱静,邱桂学..乙烯-乙酸乙烯酯共聚物/聚甲醛动态硫化热塑性弹性体的制备[J].中国塑料,2017,31(9):36-42,7.
