The invention relates to a rubber composition based on at least one elastomer, a reinforcing filler, a cross-linking system and 5 to 100 phr of a crumb rubber. The crumb has a median size D50 of 100 to 300 micrometers, and a particle size distribution such that the ratio of the median sizes D10/D50 is greater than or equal to 0.5. The composition further comprises 1 to 10 phr of a tackifying resinhaving a number average molecular weight (Mn) of more than 800 g/mol and a polymolecularity index (Ip) greater than or equal to 2.0.
本发明涉及橡胶组合物,所述橡胶组合物基于至少一种弹性体、增强填料、交联体系和5phr至100phr的橡胶粉末,所述胶粉的平均尺寸D50为100μm至300μm,并且所述胶粉的粒度分布使得平均尺寸D10/D50比值大于或等于0.5;所述组合物还包含1phr至10phr的增粘树脂,所述增粘树脂具有大于800g/mol的数均分子量(Mn)和大于或等于2.0的多分散指数(Ip)。
RUBBER COMPOSITION COMPRISING SPECIFIC CRUMB RUBBER
包含特定橡胶粉末的橡胶组合物
2021-02-05
Patent
Elektronische Ressource
Chinesisch
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