Volume 140, Issue 5 e53404
RESEARCH ARTICLE

Mechanical properties, thermal stability, and thermal degradation kinetics of silicone rubber/ethylene-vinyl acetate copolymer/magnesium sulfate whisker composites compatibilized by ethylene-acrylic acid copolymer

Muhammad Zia-ul-Haq

Muhammad Zia-ul-Haq

State Key Laboratory of Metal Matrix Composites, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, People's Republic of China

Contribution: Conceptualization (lead), Formal analysis (lead), ​Investigation (lead), Methodology (lead), Writing - original draft (lead)

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Zaheer Ul Haq

Zaheer Ul Haq

State Key Laboratory of Metal Matrix Composites, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, People's Republic of China

Contribution: Formal analysis (supporting), Methodology (supporting)

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Jian Wu

Jian Wu

State Key Laboratory of Metal Matrix Composites, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, People's Republic of China

Contribution: Methodology (supporting), Writing - original draft (supporting)

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Zonglin Peng

Zonglin Peng

State Key Laboratory of Metal Matrix Composites, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, People's Republic of China

Contribution: ​Investigation (supporting)

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Yong Zhang

Corresponding Author

Yong Zhang

State Key Laboratory of Metal Matrix Composites, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, People's Republic of China

Correspondence

Yong Zhang, State Key Laboratory of Metal Matrix Composites, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, People's Republic of China.

Email: [email protected]

Contribution: Supervision (lead), Writing - review & editing (supporting)

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First published: 21 November 2022
Citations: 2

Abstract

Silicone rubber/ethylene-vinyl acetate copolymer/magnesium sulfate whisker composites containing ethylene-acrylic acid copolymer (MS/SR/EVM/EAA) as a compatibilizer were successfully prepared. Moreover, the magnesium sulfate whisker surface was modified with 3 wt% of silane coupling agent (KH570), resulting in composites including (unmodified magnesium sulfate whisker) uMS/SR/EVM, (modified magnesium sulfate whisker) mMS/SR/EVM, and mMS/SR/EVM/EAA were compared. The values of thermal decomposition activation energy (Ea) calculated by the two different methods (Kissinger and Friedman methods) show that the composites filled with 5 and 20 phr whiskers have lower values of activation energy (Ea) than the SR/EVM blend. The tensile strength of composites with a 5 phr modified whisker is 14.5 MPa, which is higher than that of the SR/EVM blend and uMS5/SR/EVM composite. The tear strength of the composite with 20 phr mMS is 51.6 kN m−1, much higher than that of the composite with 20 phr uMS and SR/EVM blend. The mechanical properties were also investigated after thermal aging of the composites at 85°C for 48 h. The thermal conductivity of the composites with high filler loading was studied.

CONFLICT OF INTEREST

The authors declare no potential conflict of interest.

DATA AVAILABILITY STATEMENT

Research data not shared.

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