EPDM对VMQ硅橡胶泡沫发泡行为及力学性能的影响

doi:10.11896/cldb.21080090

材料导报

2023, Vol. 37

Issue (6): 21080090-5 https://doi.org/10.11896/cldb.21080090

高分子与聚合物基复合材料

EPDM对VMQ硅橡胶泡沫发泡行为及力学性能的影响

平凡¹, 赵宝艳², 包锦标¹, 张利^1,*

1 宁波大学材料科学与化学工程学院, 浙江宁波 315211
2 浙江纺织服装职业技术学院纺织学院,浙江宁波 315211

Effect of EPDM on Foaming Behavior and Mechanical Properties of VMQ Silicone Rubber Foam

PING Fan¹, ZHAO Baoyan², BAO Jinbiao¹, ZHANG Li^1,*

1 School of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, Zhejiang, China
2 Textile College, Zhejiang Fashion Institute of Technology, Ningbo 315211, Zhejiang, China

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摘要本工作采用超临界二氧化碳(scCO₂)发泡技术制备甲基乙烯基硅橡胶(VMQ)/三元乙丙橡胶(EPDM)复合发泡材料,探讨了预硫化时间、EPDM含量以及饱和温度对泡孔形貌的影响。力学性能测试结果表明硅橡胶泡孔结构和EPDM含量对复合材料力学性能有较大影响。当预硫化时间为8 min时,其交联密度为2.7×10^-5 mol·cm^-3,可得到较好发泡性能和较宽发泡窗口。在60 ℃饱和温度、10 MPa饱和压力下发泡的VMQ-0.5EPDM(每100份硅橡胶中加入0.5份EPDM)密度可以达到0.2 g/cm³(发泡倍率为5.7倍);同时,参考VMQ-0EPDM,VMQ-0.5EPDM的比压缩强度从1.88 MPa·cm³/g增加到2.51 MPa·cm³/g,提升33%。

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	平凡
	赵宝艳
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	张利

关键词: 甲基乙烯基硅橡胶三元乙丙橡胶(EPDM) 超临界二氧化碳压缩性能

Abstract: In this work, the methyl vinyl silicone rubber(VMQ)/EPDM foams were prepared by supercritical carbon dioxide (scCO₂) foaming technology. The influence of precuring time, EPDM content and saturation temperature on cell morphology and mechanical properties was investigated. The results of mechanical properties showed that the cellular structure of silicone rubber and EPDM content had a great influence on the mechanical properties. When the precuring time was 8 min, the crosslinking density was 2.7×10^-5mol · cm^-3, and better foaming performance and wider foaming window can be obtained. The density of VMQ-0.5EPDM (adding 0.5 EPDM to every 100 parts of silicone rubber) foamed at 60 ℃ and 10 MPa was 0.2 g/cm³ (foaming ratio is 5.7 times).Meanwhile, with reference to VMQ-0EPDM, the specific compressive strength of VMQ-0.5EPDM increased from 1.88 MPa · cm³/g to 2.51 MPa · cm³/g, with an increase of 33%.

Key words: methyl vinyl silicone rubber ethylene-propylene-diene monomer(EPDM) supercritical carbon dioxide compression performance

发布日期: 2023-03-27

ZTFLH:

TQ333.93

基金资助: 宁波市自然科学基金(202003N4104);2020年度浙江省高等学校国内访问工程师项目(FG2020156)

通讯作者: *张利,宁波大学材料科学与化学工程学院副教授。2010年毕业于日本国立信州大学,获博士学位。2013年加入宁波大学工作至今,主要研究领域为高分子复合材料的轻量化设计与制备。在国内外重要期刊发表文章多篇,申请发明专利多项。zhangli2@nbu.edu.cn

作者简介: 平凡,2019年6月毕业于嘉兴学院,获得工学学士学位。于2019年9月至2022年6月在宁波大学材料科学与化学工程学院攻读硕士学位,主要从事高分子材料加工领域的研究。

引用本文:

平凡, 赵宝艳, 包锦标, 张利. EPDM对VMQ硅橡胶泡沫发泡行为及力学性能的影响[J]. 材料导报, 2023, 37(6): 21080090-5.
PING Fan, ZHAO Baoyan, BAO Jinbiao, ZHANG Li. Effect of EPDM on Foaming Behavior and Mechanical Properties of VMQ Silicone Rubber Foam. Materials Reports, 2023, 37(6): 21080090-5.

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http://www.mater-rep.com/CN/10.11896/cldb.21080090 或 http://www.mater-rep.com/CN/Y2023/V37/I6/21080090

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