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首页> 外文期刊>Journal of Applied Polymer Science >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
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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

机译：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

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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 (E-a) calculated by the two different methods (Kissinger and Friedman methods) show that the composites filled with 5 and 20phr whiskers have lower values of activation energy (E-a) than the SR/EVM blend. The tensile strength of composites with a 5phr 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 20phr mMS is 51.6 kNm(-1), much higher than that of the composite with 20phr uMS and SR/EVM blend. The mechanical properties were also investigated after thermal aging of the composites at 85 degrees C for 48h. The thermal conductivity of the composites with high filler loading was studied.

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