Effect of magnesium methacrylate on the mechanical properties of EVM vulcanizate

被引：36

作者：

Du, AH ^{[1
]}

Peng, ZL ^{[1
]}

Zhang, Y ^{[1
]}

Zhang, YX ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, Res Inst Polymer Mat, Shanghai 200240, Peoples R China

来源：

POLYMER TESTING | 2002年 / 21卷 / 08期

关键词：

magnesium methacrylate; ethylene-vinyl acetate copolymer; reinforcement; ionic crosslink;

D O I：

10.1016/S0142-9418(02)00025-9

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

High performance ethylene-vinyl acetate copolymer (EVM) vulcanizate was obtained by directly blending EVM with magnesium methacrylate (MDMA) at a high level. The mechanical properties and crosslink density of the peroxide-cured EVM vulcanizates were investigated. Dynamic mechanical thermal analysis (DMTA) was used to study dynamic properties of EVM reinforced by MDMA. The results showed that the commercial MDMA can greatly improve the modulus at 100% and tensile strength of the EVM vulcanizates, while retaining their high elongation at break. DMTA results revealed that the glass transition temperature (T-g) of the vulcanizate shifted to lower temperature with the increase of MDMA loading. Fourier transform infrared (FTIR) spectrum indicated that the double bonds in MDMA reacted after peroxide curing. Crosslink density analysis showed that EVM vulcanizate contained both ionic bonds and covalent bonds. Ionic crosslinks greatly increased with increasing amount of MDMA and dicumyl peroxide (DCP). (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：889 / 895

页数：7

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