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Method for delaying adhesion of plasticated rubber sheets from natural rubber

A natural rubber, film adhesion technology, applied in the direction of coating, to achieve the effect of prolonging storage time, simple and flexible process, and reducing environmental pollution

Inactive Publication Date: 2019-12-03
SANLUX
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the existing technical difficulties and solve the production problems, the invention provides a method for delaying the adhesion of natural rubber mastication film, the invention has low cost, simple and flexible process, and the anti-adhesion effect is better than that of simple release agent dip coating

Method used

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  • Method for delaying adhesion of plasticated rubber sheets from natural rubber
  • Method for delaying adhesion of plasticated rubber sheets from natural rubber
  • Method for delaying adhesion of plasticated rubber sheets from natural rubber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] (1) Put the SCR10 natural rubber block into the internal mixer. The initial temperature of the mixing chamber is normal temperature, the rotor rotates, and the mixer is mixed for 30 seconds. Add the first batch of carbon black, and after mixing for 30 seconds, add the second batch Carbon black, the mixing time reaches 190 seconds, and the mixing chamber temperature reaches 155°C to discharge the rubber, and hot plasticized rubber is obtained;

[0020] (2) The hot masticated rubber obtained in step (1) is dipped in a release agent and then cooled to 60° C., and the pieces are dropped and left to stand to obtain the anti-sticking plastified rubber 1.

[0021] Among them, 100 parts of SCR10 natural rubber block, rotor speed of 50 revolutions / min, 1 part of N220, 6 parts of N330, 3 parts of N660, and 10 parts of carbon black by total weight.

[0022] The dilution ratio of the release agent is 10%. The release agent is 100 parts of distilled water, 8 parts of fatty acid sodium and...

Embodiment 2

[0024] (1) Put the SCR10 natural rubber block into the internal mixer. The initial temperature of the internal mixing chamber is normal temperature, the rotor rotates, and the internal mixing is carried out for 30 seconds without adding carbon black. Plastic compound;

[0025] (2) After dipping the hot plasticized rubber obtained in step (1) into a release agent and cooling to 60° C., the pieces are dropped and left to stand to obtain the anti-sticking plasticized rubber 2.

[0026] Among them, 100 parts of SCR10 natural rubber block, rotor speed of 50 rpm, and 10 parts of carbon black.

[0027] The dilution ratio of the release agent is 10%. The release agent is 100 parts of distilled water, 8 parts of fatty acid sodium and 2 parts of fatty acid potassium, 5 parts of pottery clay, 3 parts of surface active agent, 5 parts of light calcium carbonate and 4 parts of defoamer.

Embodiment 3

[0029] (1) Put the SCR10 natural rubber block into the internal mixer. The initial temperature of the mixing chamber is normal temperature, the rotor rotates, and the mixer is mixed for 30 seconds. Add the first batch of carbon black, and after mixing for 30 seconds, add the second batch Carbon black, the mixing time reaches 190 seconds, and the mixing chamber temperature reaches 155°C to discharge the rubber, and hot plasticized rubber is obtained;

[0030] (2) The hot plastified rubber obtained in step (1) is dipped in a release agent and cooled to 60° C., and the pieces are dropped and left to stand to obtain the anti-sticking plastified rubber 3.

[0031] Among them, 100 parts of SCR10 natural rubber block, rotor speed of 50 revolutions / min, 1 part of N220, 6 parts of N330, 3 parts of N660, and 10 parts of carbon black by total weight.

[0032] The dilution ratio of the release agent is 5%. The release agent is 100 parts of distilled water, 8 parts of fatty acid sodium and 2 par...

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Abstract

The invention belongs to the technical field of processing of rubber, and particularly relates to a method for delaying adhesion of plasticated rubber sheets from natural rubber. The method for delaying adhesion of the plasticated rubber sheets from the natural rubber comprises the following steps: (1) adding SCR10 natural rubber bricks into an internal mixer, with initial temperature of a mixingchamber at 0-5 DEG C and the rotating speed of a rotor at 45-55 r / min, conducting mixing for 30 seconds, adding carbon black for multiple times, and discharging rubber when the temperature of the mixing chamber reaches 155 DEG C to obtain hot plasticated rubber; and (2) after the hot plasticated rubber obtained in the step (1) is dipped in a separating agent for dip-coating, cooling the hot plasticated rubber subjected to dip-coating to 60 DEG C, conducting blanking, and subjecting obtained plasticated rubber sheets to standing for use. According to the provided method for delaying adhesion ofthe plasticated rubber sheets from the natural rubber, the cost is low, the technology is simple and flexible, and an anti-sticking effect is better than a dip-coating effect of a simple separating agent.

Description

Technical field [0001] The invention belongs to the technical field of rubber processing, and particularly relates to a method for delaying the adhesion of natural rubber plasticized film. Background technique [0002] Current rubber processing involves processes such as plasticization, mixing, extrusion, extrusion, calendering, and molding. The invention focuses on the plasticizing process, and solves the problem that the plasticized film is too sticky when stored for a long time. Since the rubber itself has self-adhesive properties, it will adversely affect the transportation and storage process of the plasticized rubber. In order to solve the problem of adhesion of plasticized rubber, the industry's common practice is to process the plasticized film before use, and dip a layer of release agent to form an isolation layer between the films to prevent adhesion. However, due to the different production processes, storage methods and conditions of each manufacturer, a simple dip ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/06C08L7/00C08K3/04C09D1/00C09D7/63
CPCC08J7/06C08J2307/00C08K3/04C08K2201/014C09D1/00C09D7/63C08L7/00
Inventor 张博崔玉瑞胡恩波吴琼瑛
Owner SANLUX
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