中国塑料 ›› 2009, Vol. 23 ›› Issue (03): 37-40 .DOI: 10.19491/j.issn.1001-9278.2009.03.009

• 材料与性能 • 上一篇    下一篇

接枝率对PVC/PA6-g-SMA共混物结构与性能的影响

王彩红 周秉正 何敏 鲁圣军 于杰   

  1. 贵州大学化学与化学工程学院 贵州大学理学院 贵州大学材料科学与冶金工程学院 贵州大学材料与冶金学院;国家复合改性聚合物材料工程技术研究中心 国家复合改性聚合物材料工程技术研究中心
  • 收稿日期:2008-11-28 修回日期:1900-01-01 出版日期:2009-03-26 发布日期:2009-03-26

Effect of Grafting Ratio on the Structure and Properties of PVC/PA6-g-SMA Blend

Cai-hong WANG Bing-Zheng ZHOU Min HE LU Sheng-Jun Jie YU   

  • Received:2008-11-28 Revised:1900-01-01 Online:2009-03-26 Published:2009-03-26
  • Contact: Jie YU

摘要: 采用熔融共混方法制备了聚氯乙烯(PVC)与不同接枝率苯乙烯-马来酸酐共聚物(SMA)接枝改性聚酰胺6(PA6-g-SMA)的共混物,研究了PA6-g-SMA接枝率对PVC/PA6-g-SMA共混物力学性能及凝聚态结构的影响。结果表明,接枝率越高,PA6-g-SMA与PVC的相容性越好,在PVC基体中能以更小的相畴均匀分散,对PVC的增韧增强作用越明显;当PA6-g-SMA的接枝率为5.12 %,添加量为15 %(质量分数,下同)时,共混物的冲击强度为64.7 kJ/m2,拉伸强度为55 MPa。

关键词: 聚氯乙烯, 苯乙烯-马来酸酐共聚物接枝聚酰胺6, 形态, 力学性能

Abstract: PA6 was grafted with styrene/maleic anhydride copolymer (PA6-g-SMA)and was subsequently blended with poly vinyl chloride (PVC) via melt blending. The effect of grafting ratio of PA6-g-SMA on morphology and mechanical properties of PVC/PA6-g-SMA blends were discussed. A good compatibility between PA6-g-SMA and PVC was identified. With increasing grafting ratio of PA6, the decreasing domain size of PA6-g-SMA and enhanced toughening and reinforcing on PVC was observed. When the graft ratio was 5.12 %, the addition was 15 %, the impact strength of the blend was 64.7 kJ/m2 , the tensile strength of the blend was 55 MPa.

Key words: poly(vinyl chloride), polyamide 6 grafted styrene-maleic anhydride, morphology, mechanical property