Effect of Compatibilizer on Properties of Silicone/Polyurethane Thermoplastic Elastomer
The effect of the compatibilizers on the physical properties and micro-morphology of silicone rubber/polyurethane thermoplastic elastomers were investigated.Results show that compatibilizers effectively improve the tensile strength and elonga-tion at break,and size of silicone rubber microspheres in silicone rubber/polyurethane thermoplastic elastomers,but different compatibilizers have different effects.Among them,SEBS-g-MAH has the best improvement with tensile strength increased by 41.6%and elongation at break increased by 22.6%,followed by POE-g-MAH.PP-g-MAH and EAA has the similar result,comparedwith the rubber without compatibilizer,the tensile strength is increased by 24.3%,and the elengation at break is slightly increased.The amount of compatibilizer has a significant impact on the interface interaction and physical properties of sil-icone rubber/polyurethane thermoplastic elastomers,and it first increases and then remains the same with the increasing of com-patibilizer.
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