MICROSTRUCTURE AND PROPERTIES OF PVC/ACR BLENDS

ZHANG Bang-hua; SONG Mou-dao; ZENG Jun-wcn; DING Pei-yuan; SONG Yun-li; FAN Ting-yu

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MICROSTRUCTURE AND PROPERTIES OF PVC/ACR BLENDS

Research Article | 更新时间：2021-03-19

- MICROSTRUCTURE AND PROPERTIES OF PVC/ACR BLENDS
- Acta Polymerica Sinica Issue 3, Pages: 182-188(1988)
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- Published：20 June 1988，
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ZHANG Bang-hua, SONG Mou-dao, ZENG Jun-wcn, DING Pei-yuan, SONG Yun-li, FAN Ting-yu. MICROSTRUCTURE AND PROPERTIES OF PVC/ACR BLENDS. [J]. Acta Polymerica Sinica (3):182-188(1988)
DOI：

ZHANG Bang-hua, SONG Mou-dao, ZENG Jun-wcn, DING Pei-yuan, SONG Yun-li, FAN Ting-yu. MICROSTRUCTURE AND PROPERTIES OF PVC/ACR BLENDS. [J]. Acta Polymerica Sinica (3):182-188(1988) DOI：

摘要

本文研究了聚氯乙烯/丙烯酸酯类共聚物(PVC/ACR)共混物的应力-应变行为和冲击强度对ACR 用量的依赖关系。ACR对 PVC有良好的增韧作用

提高了PVC抗冲击性能。考察了三盐基性硫酸铅和硬脂酸钡-硬脂酸镉稳定剂对共混体系的影响

实验结果说明不同的热稳定体系对ACR改性PVC的效果有差别。动态力学性能测定结果表明PVC/ACR共混物存在两个玻璃化转变温度

证明PVC与ACR不相容性;而两个转变温度随共混物组成改变而变化

说明PVC与ACR之间存在着相互作用

PVC/ACR为部分相容体系。通过透射电子显微镜观察PVC/ACR共混物的微观结构形态表明:PVC与 ACR为两相体系

ACR呈粒状分布在PVC连续相中。但是

采用硬脂酸钡-硬脂酸镉稳定体系时

随着ACR用量增加

ACR的分散形态由粒状分散逐渐形成网络结构形态

与此相对应的共混物具有更好的抗冲击性能。

Abstract

The microstructure-properties of Poly(vinyl chloride)/acrylic copolymer (PVC/ACR) blends have been studied by using dynamic mechanical analysis (DMA)

transmission electron microscopy (TEM)

stress-strain

and impact testing. Experimental results indicated that the PVC/ACR had a good impact property

and it was evident that the barium-cadmiun stearate-stabilizer was better than the tribasic lead sulfate for PVC/ACR blends. Two transition temperatures of each blend revealed by the DMA spectra showed that they varied as the com-position of the blend changed

therefore the PVC/ACR blends were semi-compatible. TEM re-cords illustrated that they exhibited two phase systems with ACR dispersed as a particle in PVC phase. In the barium cadmiun stearate system when the ACR content was high

the ACR was presented as a network structure in PVC phase. The bland having the above coresponding morphology has a high impact strength.

关键词

聚氯乙烯丙烯酸酯类共聚物共混物

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