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High-performance fixed silica gel and preparation method thereof

A high-performance, silica gel technology, applied in the field of silica gel, can solve the problems of poor fixed silica gel fixation, shock absorption, protection, etc., uneven quality of fixed silica gel, affecting the normal use of fixed silica gel, etc., to achieve improved fixation and good electrical insulation Sexuality, the effect of improving performance

Inactive Publication Date: 2022-04-29
德邦(中山)新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the quality of the fixed silica gel in the prior art is uneven. When the microporous structure of the fixed silica gel is too large, the performance of the fixed silica gel will be reduced, resulting in poor fixation, shock absorption, and protection effects of the fixed silica gel, which seriously affects Normal use of fixed silicone

Method used

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  • High-performance fixed silica gel and preparation method thereof

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Effect test

Embodiment 1

[0033] A high-performance fixed silica gel and a preparation method thereof. The high-performance fixed silica gel includes dilute sodium hydroxide solution, dilute sulfuric acid, flame retardant powder, mold release agent, heat conduction powder, vulcanizing agent and white carbon black.

[0034] Further, the high-performance fixed silica gel is counted in parts by weight, including the following parts by weight, 20-30 parts of the dilute lye, 20-30 parts of the dilute sulfuric acid, 20 parts of the flame retardant powder, and 2 parts of the release agent, 3 parts of the heat-conducting powder, 5-15 parts of the vulcanizing agent, and 20 parts of the white carbon black.

[0035] Further, the particle size of the white carbon black is 800-1200 mesh.

[0036] Further, the release agent is any one or more of silicone compounds, silicone oil, silicone methyl branched silicone oil, methyl silicone oil, emulsified methyl silicone oil, and hydrogen-containing methyl silicone oil.

...

Embodiment 2

[0047] A method for preparing high-performance fixed silica gel, comprising the following steps:

[0048] S1. Preparation equipment: reaction kettle, mixer, kneader and silicone molding machine;

[0049] S2. Material preparation: Take 20-30 parts of dilute soaking lye, 20-30 parts of dilute sulfuric acid, 20 parts of flame retardant powder, 2 parts of release agent, 3 parts of heat conducting powder, 5-15 parts of vulcanizing agent and white carbon black 20 copies;

[0050] S3, granulation: put 25 parts of dilute soaked lye and 25 parts of dilute sulfuric acid into the reaction kettle to fully react, and make gel granules by air granulation;

[0051] S4. Mixing: Send the gel particles, flame retardant powder, mold release agent, heat conduction powder and white carbon black into the mixer to fully mix;

[0052] S5. Kneading: send the mixture into a kneader, and knead the mixture in the kneader for 1.5-2.5 hours to obtain a crude immobilized silica gel; the mixture is kneaded...

Embodiment 3

[0056] A method for preparing high-performance fixed silica gel, comprising the following steps:

[0057] S1. Preparation equipment: reaction kettle, mixer, kneader and silicone molding machine;

[0058] S2. Material preparation: Take 20-30 parts of dilute soaking lye, 20-30 parts of dilute sulfuric acid, 20 parts of flame retardant powder, 2 parts of release agent, 3 parts of heat conducting powder, 5-15 parts of vulcanizing agent and white carbon black 20 copies;

[0059] S3, granulation: put 20 parts of dilute soaked lye and 30 parts of dilute sulfuric acid into the reaction kettle to fully react, and make gel granules by air granulation; the gel granules are acidic;

[0060] S4. Mixing: Send the gel particles, flame retardant powder, mold release agent, heat conduction powder and white carbon black into the mixer to fully mix;

[0061] S5. Kneading: send the mixture into a kneader, and knead the mixture in the kneader for 1.5-2.5 hours to obtain a crude immobilized silic...

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Abstract

The invention discloses high-performance fixed silica gel and a preparation method thereof. The high-performance fixed silica gel comprises dilute sodium silicate liquid, dilute sulfuric acid, flame-retardant powder, a release agent, heat-conducting powder, a vulcanizing agent and white carbon black. The preparation method comprises the following steps: fully reacting dilute sodium silicate liquid with dilute sulfuric acid by using a reaction kettle to prepare gel particles, enabling the pore diameter of the gel particles to be small when the gel particles are acidic, then mixing the gel particles with flame-retardant powder, a release agent, heat-conducting powder and white carbon black, performing mixing and kneading, and preparing a finished product through a silica gel film pressing machine, therefore, the effects of fixing, damping, protecting and the like of the fixing silica gel are improved, the flame retardant property of the fixing silica gel is improved, the use performance of the fixing silica gel is improved, meanwhile, the phenomenon that the fixing silica gel is wrapped by wind or is not cooked after being prepared can be avoided by adding the vulcanizing agent, and the service life of the fixing silica gel is prolonged. And the fixed silica gel is not ripened even if too much or too little vulcanizing agent is added.

Description

technical field [0001] The invention relates to the field of silica gel, more specifically, to a high-performance fixed silica gel and a preparation method thereof. Background technique [0002] Silica gel, silicone rubber is a highly active adsorption material, which is an amorphous substance, insoluble in water and any solvent, non-toxic, tasteless, stable in chemical properties, and does not react with any substance except strong alkali and hydrofluoric acid. Different types of silica gel form different microporous structures due to different manufacturing methods. The chemical composition and physical structure of silica gel determine that it has many characteristics that other similar materials cannot replace: high adsorption performance, good thermal stability, and stable chemical properties. , High mechanical strength, etc. [0003] However, the quality of the fixed silica gel in the prior art is uneven. When the microporous structure of the fixed silica gel is too l...

Claims

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Application Information

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IPC IPC(8): C08L83/04C08L83/05C08K7/26C08K3/22C08K3/36C08K3/38C08K3/28C08K3/34
CPCC08L83/04C08K2003/2227C08K2003/2296C08K2003/282C08K2003/385C08L2201/02C08K7/26C08K3/22C08K3/36C08K3/38C08K3/28C08K3/34
Inventor 王晨宇
Owner 德邦(中山)新材料科技有限公司