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Enhanced mechanical, thermal performance and kinetics of thermal degradation of silicone rubber/ethylene–vinyl acetate copolymer/halloysite nanoclay nanocomposites compatibilized by ethylene–acrylic acid copolymer

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Abstract

In this investigation, ethylene–acrylic acid copolymer (EAA) was applied to compatibilize silicone rubber (SR) and ethylene–vinyl acetate copolymer (EVM) blend. The halloysite nanoparticles reinforced SR/EVM/EAA compatibilized nanocomposites were successfully prepared. The halloysite nanoparticles (HNP) were surface modified with 3-(triethoxysilyl) propyl methacrylate (KH570) to increase surface interaction of HNP with SR/EVM/EAA matrix. Pristine and silane-modified nanoparticles were characterized by Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction. The tensile strength, elongation at break, modulus at 300%, tear strength, shore A hardness, and set at break of compatibilized nanocomposites increase by 74%, 70%, 227%, 52.9%, 19.4%, and 264% than that of the SR/EVM blend, respectively. The mechanical properties were also studied at 90 °C for 48 h after the thermal aging of the nanocomposites. Dynamic mechanical analysis reveals storage modulus increase and glass transition temperatures of SR and EVM move closer to one another. The thermal durability of the uHNP/SR/EVM nanocomposites was investigated using nonisothermal TG analysis, and activation energy of decomposition (Eα) was estimated by Kissinger, Flynn–Wall–Ozawa, and Friedman methods. The results show that the thermal stabilities and Eα of nanocomposites loaded with 5 and 20 phr of uHNP are better than that of SR/EVM blend.

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Data availability

The datasets generated during and/or analysed during the current study are available from the corresponding author on reasonable request.

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Acknowledgements

The work is supported by the National Natural Science Foundation of China (No. 51273109). The authors also thank the Instrumental Analysis Center of Shanghai Jiao Tong University staff for the measurements.

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  1. School of Chemistry and Chemical Engineering, State Key Laboratory for Metal Matrix Composite Materials, Shanghai Key Laboratory of Electrical Insulation and Thermal Aging, Shanghai Jiao Tong University, Shanghai, 200240, China

    Muhammad Zia-ul-Haq, Jian Wu, Zaheer Ul Haq, Zonglin Peng & Yong Zhang

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Zia-ul-Haq, M., Wu, J., Haq, Z.U. et al. Enhanced mechanical, thermal performance and kinetics of thermal degradation of silicone rubber/ethylene–vinyl acetate copolymer/halloysite nanoclay nanocomposites compatibilized by ethylene–acrylic acid copolymer. J Polym Res 30, 306 (2023). https://doi.org/10.1007/s10965-023-03688-5

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