Rubber raw rubber is processed before use to improve its performance and reduce costs. The most important two steps are mastication and mixing. As a professional rubber manufacturer, we will introduce the process of rubber mastication and mixing.

First, mastication

Raw rubber is elastic and lacks the plasticity properties necessary for processing, so it is not easy to process. In order to improve the plasticity, the raw rubber is masticated, so that the compounding agent is easily dispersed uniformly in the raw rubber during the kneading, and also helps to improve the permeability of the rubber into the fiber fabric during the calendering and molding process. And molding fluidity. The process of degrading the long-chain molecules of raw rubber to form plasticity is called mastication. There are two kinds of raw plastic mastication methods: mechanical mastication and thermoplastic refining. Mechanical mastication is a process in which the degradation of long-chain rubber molecules is shortened from a highly elastic state to a plastic state by mechanical extrusion and friction of a plasticizer at a relatively low temperature. Thermoplasticing is the introduction of hot compressed air into the raw rubber to shorten the degradation of long-chain molecules under heat and oxygen to obtain plasticity.

Second, mixing
In order to adapt to various conditions of use, to obtain various properties, and to improve the performance of rubber articles and to reduce costs, it is necessary to add different compounding agents to the raw rubber. Mixing is a process in which the raw rubber after the mastication is mixed with the compounding agent and placed in the rubber mixing machine to completely and uniformly disperse the compounding agent in the raw rubber by mechanical mixing. Mixing is an important process in the production of rubber products. If the mixing is not uniform, the effects of rubber and compounding agents can not be fully exerted. The compound obtained after mixing is called rubber compound. It is a semi-finished material for manufacturing various rubber products. It is commonly known as rubber compound. It is usually sold as a commodity. The rubber product can be directly processed and vulcanized by the rubber. . Depending on the formulation, the mixes are available in a range of different grades and varieties.Learn more.