Preparation method of silicone rubber coloring master batch

A technology of coloring masterbatch and silicone rubber, which is applied in the field of rubber coloring masterbatch, can solve problems such as color change difficulties, air pollution in production workshops, improve tear resistance and wear resistance, increase service life, and prevent condensation The effect of glue phenomenon

Inactive Publication Date: 2015-04-01
CHENGDU JINHUI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to propose another scheme relative to the preparation method of the silicone rubber coloring masterbatch in the prior art, which mainly solves the problems of difficult color change on the production line and serious air pollution in the production workshop, and has the advantages of improving the dispersibility of the product, The advantages of increasing production efficiency and keeping the production workshop clean

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A preparation method for silicone rubber coloring masterbatch, comprising the following steps:

[0020] (1) Weighing

[0021] Weigh the following raw materials according to the formula: 60 parts of silicone rubber, 35 parts of reinforcing agent, 0.1 part of structure control agent, 65 parts of colorant, and 0.5 part of anti-aging agent;

[0022] (2) Mixing

[0023] Put the weighed materials into the open mixer in order of weight from large to small, and wrap the front roll first and then the rear roll. The temperature was set at 25°C and the mixing time was 12 minutes.

[0024] (3) Cutting and dicing

[0025] Fully mix on the open mill, repeat 3 times, cool down to room temperature, cut the material into pieces, and pack it.

[0026] In this embodiment, the reinforcing agent is carbon black, and carbon black is a common reinforcing agent. Silicone rubber macromolecules can slide on the surface of carbon black. Due to the inhomogeneous surface activity of carbon b...

Embodiment 2

[0030] A preparation method for silicone rubber coloring masterbatch, comprising the following steps:

[0031] (1) Weighing

[0032] Weigh the following raw materials according to the formula: 80 parts of silicone rubber, 45 parts of reinforcing agent, 3 parts of structure control agent, 75 parts of coloring agent, and 4 parts of anti-aging agent;

[0033] (2) Mixing

[0034] Put the weighed materials into the open mixer in order of weight from large to small, and wrap the front roll first and then the rear roll. The temperature was set at 30°C and the mixing time was 18 minutes.

[0035] (3) Cutting and dicing

[0036] Fully mix on the open mill, repeat 5 times, cool down to room temperature, cut the material into pieces, and pack it.

[0037] In this implementation, the reinforcing agent is carbon black.

[0038] Structure control agents are siloxysilanes.

[0039] The coloring agent is preferably an organic pigment, which has higher safety and coloring strength.

Embodiment 3

[0041] A preparation method for silicone rubber coloring masterbatch, comprising the following steps:

[0042] (1) Weighing

[0043] Weigh the following raw materials according to the formula: 70 parts of silicone rubber, 40 parts of reinforcing agent, 1 part of structure control agent, 68 parts of coloring agent, and 1 part of anti-aging agent;

[0044] (2) Mixing

[0045] Put the weighed materials in the order of weight parts from large to small, and put them into the open mixer for mixing. First wrap the front roll and then the rear roll. The roll distance is 6mm. The temperature was set at 26°C and the mixing time was 16 minutes.

[0046] (3) Cutting and dicing

[0047] Fully mix on the open mill, repeat 4 times, cool down to room temperature, cut the material into pieces, and pack it.

[0048] In this embodiment, the reinforcing agent is clay.

[0049] The structure control agent is borosiloxane.

[0050] The coloring agent is preferably an organic pigment, which...

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PUM

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Abstract

The invention discloses a preparation method of silicone rubber coloring master batch, including the following steps: (1) weighting the following raw materials respectively according to a formula: 60-80 parts of silicone rubber, 35-45 parts of reinforcing agent, 0.1-3 parts of structure controlling agent, 65-75 parts of coloring agent and 0.5-4 parts of age resister; (2) putting the weighted raw materials into an open mixing machine for mixing in a sequence of tapered weight parts, encapsulating a front roller first and then encapsulating a rear roller under the conditions that a roller spacing is 5-6mm, the temperature of the front roller is set to be 30-34 DEG C, the temperature of the rear roller is set to be 25-30 DEG C, and the mixing time is 12-18min; and (3) intensively mixing on an open mill, repeating overturn milling for 3-5 times, cooling to room temperature, cutting the materials into blocks and then packaging. The silicone rubber coloring master batch prepared according to the invention has the advantages of good dispersity, high cleanliness in the using process of downstream manufacturers and prolonged service life of products.

Description

technical field [0001] The invention relates to a rubber coloring masterbatch, in particular to a preparation method of a silicone rubber coloring masterbatch. Background technique [0002] Silicone rubber has good resistance to extreme temperatures and can work normally at -100 to 300°C. Certain properties such as elongation, creep resistance, hoop bending, tear strength, compression set, dielectric strength (high voltage), thermal conductivity, fire resistance. Silicone rubber can be divided into heat vulcanization type (high temperature vulcanization silicone HTV) and room temperature vulcanization type (RTV). The room temperature vulcanization type is divided into polycondensation reaction type and addition reaction type. High temperature silicone rubber is mainly used to manufacture various silicone rubber products, while room temperature silicone rubber is mainly used as adhesive, potting material or mold. The thermal vulcanization type has the largest amount, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29B7/52B26D3/18C08L83/04C08K3/04C08K3/36C08K3/26
Inventor 张一帆
Owner CHENGDU JINHUI TECH
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