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A combined rubber system of ultrafine full-vulcanized powdered rubber (UFPR) and SBS was used for polypropylene toughening. The PP toughened with the combined rubber system shows not only higher impact strength as compared to each rubber component used alone but also good stiffness and heat resistance. Crystallization study shows that the UFPR is more efficient in promoting the crystallization of...
Generally, toughness of polypropylene (PP) is an issue which has been investigated for many years to search for improvements. A traditional approach is to blend with rubber particles to enhance the toughness of PP yet modulus of PP decreases accordingly. Recently, we have achieved a good balance of toughness and stiffness of PP via blending PP with a small amount of elastomeric nano[hyphen]particles...
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