ZHOU Yufeng1, 2 ， YANG Meng1 ， WANG Ying1, 2 ， ZHAO Xue2 ， LU Ai1
（1. Institute of Chemical Materials， China Academy of Engineering Physics， Mianyang 621900，China； 2. School of Materials Science and Engineering， Southwest University of Science and Technology， Mianyang 621010, China）
Abstract：Payne effect was investigated in the case of precipitated silica （Z142） in polymethylvinylsiloxane （PMVS） using dissolution-swelling experiment and rheological measurements. The thermoelastic behavior of PMVS-Z142 was studied using thermoelastic measurements. The results show that the secondary structure is formed by the addition of silica. Due to the breakdown of the secondary structure， a noticeable decrease occurs in shear modulus of PMVS-Z142 at small strains， which is Payne effect. The internal energy contribution the total stress increases with increase of Z142 content. The energy is a function of temperature, that is, the mechanical behavior of PMVS-Z142 is greatly influenced by temperature.
Keywords: Payne effect; thermoelasticity; silica; polymethylvinylsiloxane
中图分类号：O631.2 文献标志码：A
文章编号：1008-5548(2015)01-0001-06
DOI:10.13732/j.issn.1008-5548.2015.01.001
收稿日期：2014-03-06， 修回日期：2014-03-21，在线出版时间：2015-03-02。
基金项目：国家自然科学基金项目，编号：51173174，51273183。
第一作者简介：周玉丰（1988—），男，硕士研究生，研究方向为高分子材料。 电话：15882793977，E-mail:xiaoyuzhouyf@163.com。
通信作者简介：芦艾（1968—），男，研究员，研究方向为高性能树脂基复合材料。 E-mail:ai_lu@tom.com。
