Studies on the Miscibility and Properties of PVC/α-MSAN Blends

Lei XIONG; Zhi-wei DENG; Guang-shun CHEN; Shao-yun GUO

doi:10.14028/j.cnki.1003-3726.2009.06.004

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Studies on the Miscibility and Properties of PVC/α-MSAN Blends

更新时间：2022-09-18

- Studies on the Miscibility and Properties of PVC/α-MSAN Blends
- Polymer Bulletin Vol. 22, Issue 6, Pages: 54-58(2009)
- 作者机构：
  
  高分子材料与工程国家重点实验室，四川大学高分子研究所，成都　610065
- 作者简介：
- 基金信息：
- DOI：10.14028/j.cnki.1003-3726.2009.06.004
  CLC：
- Published：2009-06，
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Lei XIONG, Zhi-wei DENG, Guang-shun CHEN, Shao-yun GUO. Studies on the Miscibility and Properties of PVC/α-MSAN Blends. [J]. Polymer Bulletin 22(6):54-58(2009)
DOI：

Lei XIONG, Zhi-wei DENG, Guang-shun CHEN, Shao-yun GUO. Studies on the Miscibility and Properties of PVC/α-MSAN Blends. [J]. Polymer Bulletin 22(6):54-58(2009) DOI： 10.14028/j.cnki.1003-3726.2009.06.004.

摘要

选用腈基含量为30%的α-甲基苯乙烯-丙烯腈（α-MSAN）作为聚氯乙烯（PVC）的耐热改性剂，通过熔融共混制备了PVC/α-MSAN 共混材料。通过SEM、DSC、DMA 及透光率测试等手段系统研究了α-MSAN 的含量对PVC/α-MSAN 共混体系相容性的影响，发现在高达60%（wt）的α-MSAN 的含量范围内它们具有良好的相容性，并从分子结构上解释了其相容性良好的原因；随α-MSAN 含量增加，共混体系的维卡软化温度（VST）和拉伸强度上升，冲击强度下降；α-MSAN 的引入会导致共混体系及PVC 静态热稳定时间下降，共混体系的颜色加深。同时分析了α-MSAN 对共混体系耐热性能、热稳定性能和力学性能产生影响的机理。

Abstract

In this paper

a kind of α-Methyl-styrene-acrylonitrile (α-MSAN) with 30% acrylonitrile (AN) content was used as a heat resistant modifier to prepare PVC/α-MSAN blends.The miscibility of PVC/α-MSAN blends was investigated by SEM

DSC

DMA and transmittance tests.It was found that α-MSAN is miscible with PVC even at 60% (wt) content of α-MSAN in these blends.The molecular structure of α-MSAN and the additional intermolecular interaction between α-hydrogen of PVC and AN of α-MSAN have accounted for the miscibility improvement of this blend system.For PVC/α-MSAN blends

with an increase of α-MSAN content

the VST and tensile strength increase

the impact strength and thermal stability decrease.The mechanism of the effects of α-MSAN on the mechanical and thermal stable properties is proposed.

关键词

聚氯乙烯α-甲基苯乙烯-丙烯腈相容性维卡软化温度

Keywords

PVCα-Methyl-styrene-acrylonitrileMiscibilityVicat soften temperature

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