Production device for liquid rubber mixing and liquid rubber mixing method

Abstract

The invention discloses a production device for liquid rubber mixing and a liquid rubber mixing method. A mixed material outputting device (2) of the production device comprises a spreading extrusion mold head (26), a mixed and coagulated rubber extruder (27), a mixed and coagulated rubber storage tank (28) and a static mixer (29), wherein the upper end of the mixed and coagulated rubber storage tank is connected with the static mixer, and the lower end of the mixed and coagulated rubber storage tank is connected with the mixed and coagulated rubber extruder; the right end of the mixed and coagulated rubber extruder is connected with the spreading extrusion mold head. According to the liquid rubber production method, a mixed emulsion and a black carbon black emulsion enter the static mixer at the high speed, are mixed and coagulated instantaneously, then enter the mixed and coagulated rubber storage tank and are extruded into strip-shaped mixed and coagulated rubber by the spreading extrusion mold head, finally, moisture of the strip-shaped mixed and coagulated rubber is extruded out by a dehydrator, the strip-shaped mixed and coagulated rubber enters a microwave drying oven and is output, and a qualified product is obtained. With the adoption of the production device and the method, the energy consumption is low, the pollution is little, black carbon black can be well dispersed in liquid latex, and produced rubber has excellent comprehensive performance such as the high elasticity, the low hardness, the high elongation at break, the high tensile strength and the like.

Description

technical field [0001] The invention relates to the field of rubber processing, in particular to a production device and method for mixing liquid rubber. Background technique [0002] Rubber is an elastic polymer. Rubber can be obtained from the sap of some plants, or it can be man-made. Both have quite a lot of applications and products, such as tires, gaskets, etc., and have become important economic crops. Rubber is divided into natural rubber and synthetic rubber according to raw materials; according to form, it is divided into block raw rubber, latex, liquid rubber and powder rubber. Latex is a colloidal water dispersion of rubber; liquid rubber is an oligomer of rubber, which is generally a viscous liquid before vulcanization; powder rubber is processed from latex into powder to facilitate batching and processing. [0003] The most common rubber mixing process in the modern rubber industry is: mixing and kneading rubber with its matching reinforcing agent, vulcanizin...

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Problems solved by technology

[0004] (1) The prepared product cannot reach a high rebound rate of more than 80%, and the Shore hardness is higher than 38 degrees, and the tensile strength is lower than 28MPa. Therefore, the prepared product has low rebound rate, high hardness, The tensile strength is low, and its comprehensive performance is not good, so it cannot be applied to mining wear-resistant accessories with large discrete element impact wear;

[0005] (2) During the mixing process, carbon black and other powdery ingredients used as reinforcing agents will cause a certain degree of pollution to the environment, thereby affecting the health of operators;

[0006] (3) In the two processes of mastication and mixing, the energy consumed is too large

[0008] However, silica is far less effective as a reinforcing agent than black carbon black

However, if black carbon black is added to the latex as a reinforcing agent, the latex will quickly break and solidify, making it impossible to continue mixing and stirring; in addition, in the above-mentioned technological process adopted abroad, the drying process is at normal temperature and pressure. It is carried out under the condition of heating to about 100 ℃ by the heat radiation generated by the microwave or steam through the exchanger. However, the high temperature of 100 ℃ will destroy the beneficial ingredients in the latex, and the thermal efficiency is low.

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