Preparation method of composition used for rubber product, and product thereof

Abstract

The invention discloses a preparation method of a composition used for a rubber product, and a product thereof. The method comprises steps that: under normal temperature, reclaimed rubber particles are mechanically crushed into reclaimed rubber powder with mixed sizes or graded sizes of no more then 90 meshes and no less than 200 meshes, or the reclaimed rubber powder with powdery auxiliary materials, or a watery material thereof, and / or a material composed of the rubber powder mixed with a softener; the material obtained in the previous step is mixed with a rubber emulsion or a rubber solution or a coagulated wet rubber phase which is not dried; the mixture is processed through a liquid removing treatment, such that a solid rubber powder-rubber composite product is obtained; or the mixture is not processed through the liquid removing treatment, such that a rubber powder-rubber composite product containing water or liquid is obtained. Compared to a processing technology in current rubber industries wherein rubber powder is masticated into high-elasticity rubber balls, the method provided by the invention is substantially energy saving. Compared to a wet rubber drying process in the current rubber industries, the method provided by the invention has greatly improved efficiency. With the provided composite product, upstream, middle stream and downstream of a rubber industrial link can be tightly combined, and benefits such as energy saving, discharge reducing, and efficiency enhancing can be provided.

Description

technical field [0001] The invention belongs to the technical field of rubber processing, and relates to a method for preparing raw materials for rubber products, in particular to a method for preparing a compound composition for rubber products by using recycled waste rubber resources and rubber raw materials. Background technique [0002] As we all know, from a practical point of view, the vast majority of rubber products are not made of pure rubber alone. Over the past hundred years, a traditional and mainstream processing method has gradually formed, that is, the primary rubber The processing plant extracts the emulsion (that is, natural rubber emulsion) from the rubber source plant, and then processes the emulsion through demulsification and dehydration to obtain a solid natural rubber with high elasticity; or it is first refined from petroleum by a petrochemical plant, Prepare various polymer monomers, such as styrene, isoprene, etc., and then obtain synthetic rubber e...

AI Technical Summary

Problems solved by technology

[0003] In the current rubber processing industry chain, due to the kneading and plasticizing process of a large amount of powder auxiliary materials and high-elastic solid rubber, there are always problems of high energy consumption and powder pollution in the mixing process. Problem: The waste rubber recycling industry at the end of the rubber industry chain, although the waste rubber has been turned into recycled resources has been utilized, but when it is used, there is still a high-energy-consuming mixing process between powder and high-elastic solid rubber. In addition, when preparing new rubber in the prior art, due to the high viscosity of the rubber material and the inability to withstand high temperature, the evaporation area of ​​the material is small, so there is high energy consumption for dehydration or dehydration of the rubber material and the efficiency of the dehydration equipment low problem

In short, the dehydration of rubber materials, the high energy consumption and low efficiency of the dehydration process, the high energy consumption of the rubber mixing process, and the powder pollution that have plagued the rubber processing industry for a long time have not been effectively solved, let alone these problems. To optimize the use of related technical solutions, the industry department hopes that relevant scientific and technological workers can make targeted improvements and innovate in accordance with the scientific development concept, so as to promote the technological progress of the rubber processing industry and serve the construction of an environment-friendly society

In addition, it is pointed out by the way that although regenerated rubber powder has been added to the formula in the rubber product industry, due to the relatively coarse particle size of the regenerated rubber powder, it can reach the proportion of rubber powder finer than or equal to 100 mesh with no obvious particles in the cut surface of the vulcanized rubber knife. Too little, so its utilization in high-grade products is not high, such as the so-called fine rubber powder mixed in tire tread rubber, usually only accounts for 5% (wt) to 10% (wt) of the pure rubber in the formula , so the industrial sector also hopes that relevant scientific and technical workers can provide a kind of easy and convenient pulverizing method of colloidal particles, coarse colloidal particles are crushed once, and the particle size in the rubber powder is finer than 100 mesh and reaches more than 85% (wt), which can greatly improve Improve the utilization of reclaimed rubber powder in high-grade rubber products, thereby further activating the development of circular economy

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