PREPARATION OF EPDM-g-MAH/CaCO3 COMPOSITES BY PRECIPITATION PROCESS AND THEIR PROPERTY CHARACTERIZATION

ZHANG Jun; PAN Yi; DING Qingjun; LIU Baolei; HU Baixing; SHEN Jian

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PREPARATION OF EPDM-g-MAH/CaCO3 COMPOSITES BY PRECIPITATION PROCESS AND THEIR PROPERTY CHARACTERIZATION

Research Article | 更新时间：2021-03-19

- PREPARATION OF EPDM-g-MAH/CaCO3 COMPOSITES BY PRECIPITATION PROCESS AND THEIR PROPERTY CHARACTERIZATION
- Acta Polymerica Sinica Issue 1, Pages: 6-10(2006)
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- Published：20 February 2006，
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ZHANG Jun, PAN Yi, DING Qingjun, LIU Baolei, HU Baixing, SHEN Jian. PREPARATION OF EPDM-g-MAH/CaCO3 COMPOSITES BY PRECIPITATION PROCESS AND THEIR PROPERTY CHARACTERIZATION. [J]. Acta Polymerica Sinica (1):6-10(2006)
DOI：

ZHANG Jun, PAN Yi, DING Qingjun, LIU Baolei, HU Baixing, SHEN Jian. PREPARATION OF EPDM-g-MAH/CaCO3 COMPOSITES BY PRECIPITATION PROCESS AND THEIR PROPERTY CHARACTERIZATION. [J]. Acta Polymerica Sinica (1):6-10(2006) DOI：

摘要

提供了三元乙丙橡胶(EPDM)交联的一种方法.以二甲苯为溶剂

溶液法制备马来酸酐(MAH)接枝EPDM

然后向溶液中加入适量碳酸钙(CaCO3)

与已接枝的马来酸酐(MAH)反应.待反应完全后

滴加丙酮作为沉淀剂

沉淀物真空干燥

制得EPDM-g-MAH/CaCO3弹性体复合材料.溶解、溶胀及拉伸性能测试结果表明

复合材料样品已形成有效的交联

且材料的抗张强度、断裂伸长率和模量均得到较大幅度的提高

当CaCO3含量达到体系总重的20%时

复合材料呈现最佳力学性能.上述实验结果是因为碱性的CaCO3的Ca2+可以与接枝在EPDM上的MAH发生配合反应

进而成为EPDM的交联中心

形成有效交联

从而促进了EPDM机械性能的提高

ATR-FTIR和TGA的测试结果被用于证实上述观点.

Abstract

A method was applied to form erosslinking networks in the ethylene—propylene-diene terpolymer(EPDM) grafting maleic anhvdride(EPDM-g—MAH)matrix with calcium carbonate(CaCO3)particles．The tensile test showed that the tensile strength and the elongation at break of the EPDM—g—MAH／CaCO3 composites were improved significantly

and when the content of CaCO3 was about 20 wt％in the composites

the maximum tensile properties were achieved．The results of swelling and solution tests showed that the composites had formed evident erosslinking structure．The results of ATR—FTIR spectrum and TGA showed that the acid-base reaction between CaCO3 and MAH had nnurred.

关键词

沉淀法接枝CaCO3MAHEPDM

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