Method for producing devulcanized rubber and an apparatus therefor

摘要

A method for producing devulcanized rubber and an apparatus (100) therefor. The method for producing devulcanized rubber comprises the steps of (1) providing vulcanized rubber particles with a pre-determined particle size and (2) devulcanizing the vulcanized rubber particles. The vulcanized rubber particles are devulcanized mechanically by impact forces and devulcanized chemically by a chemical composition. The impact forces break sulphur-sulphur and sulphur-carbon bonds of the vulcanized rubber particles causing surfaces of the rubber to become receptive in reacting with the chemical composition and the chemical composition renders the sulphur passive to prevent reattachment of the bonds, of which the chemical composition comprises at least one accelerator, at least one inorganic activator and at least one organic activator.

主权项

1. A method for producing devulcanized rubber comprising the steps of:
a) providing vulcanized rubber particles with a pre-determined particle size; and b) devulcanizing the vulcanized rubber particles, wherein the vulcanized rubber particles are devulcanized mechanically by impact forces and devulcanized chemically by a chemical composition, whereby the impact forces break sulphur-sulphur and sulphur-carbon bonds of the vulcanized rubber particles causing surfaces of the rubber to become receptive in reacting with the chemical composition and the chemical composition renders the sulphur passive to prevent reattachment of the bonds, of which the chemical composition comprises at least one accelerator, at least one inorganic activator and at least one organic activator, wherein the method for producing devulcanized rubber further comprises a step of introducing clay, wherein the method for producing devulcanized rubber further comprises a step of introducing plasticizer in an amount ranging from 1 to 15 parts per hundred rubber (phr).