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High-modulus organic silicon mold glue and preparation method thereof

A technology of silicone and mold glue, applied in the field of high-modulus silicone mold glue and its preparation, can solve the problems of easy mold burning, less number of molds, etc. low effect

Inactive Publication Date: 2019-05-14
SHANGHAI JORLE FINE CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main problem in the use of silicone mold glue in the market at present is that the number of re-moulds is small and it is easy to burn the mold

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A high modulus silicone mold glue, prepared from the following raw materials: white carbon black, silane coupling agent, catalyst, polymerization inhibitor, hydrogen-containing silicone oil, vinyl silicone oil and mold release agent;

[0024] The hydrogen content of the hydrogen-containing silicone oil is 0.5%, the vinyl silicone oil is compounded from vinyl-terminated silicone oil with a viscosity of 500CS-50000CS, the release agent is a long-chain alkyl silicone oil of 800CS, and the addition amount is 2wt%.

[0025] The silane coupling agent is silazane, and the addition amount is 20wt%.

[0026] The catalyst is a chloroplatinic acid-isopropanol catalyst, and the addition amount is 3 ppm.

[0027] The polymerization inhibitor is a vinyl double head, and the addition amount is 20ppm.

[0028] A preparation method of high modulus silicone mold glue, prepared according to the following method:

[0029] S1. Add white carbon black in the ethanol solution of silane coup...

Embodiment 2

[0032] A high modulus silicone mold glue, prepared from the following raw materials: white carbon black, silane coupling agent, catalyst, polymerization inhibitor, hydrogen-containing silicone oil, vinyl silicone oil and mold release agent;

[0033] The hydrogen content of the hydrogen-containing silicone oil is 0.5%, the vinyl silicone oil is compounded from vinyl-terminated silicone oil with a viscosity of 500CS-50000CS, the release agent is a long-chain alkyl silicone oil of 1000CS, and the addition amount is 4wt%.

[0034] The silane coupling agent is dimethyldiethoxysilane, and the addition amount is 20wt%.

[0035] The catalyst is chloroplatinic acid-acetylacetone, and the addition amount is 4ppm.

[0036] The polymerization inhibitor is methyl butynol, and the addition amount is 20ppm.

[0037] A preparation method of high modulus silicone mold glue, prepared according to the following method:

[0038] S1. Add white carbon black in the ethanol solution of silane coup...

Embodiment 3

[0041] A high modulus silicone mold glue, prepared from the following raw materials: white carbon black, silane coupling agent, catalyst, polymerization inhibitor, hydrogen-containing silicone oil, vinyl silicone oil and mold release agent;

[0042] The hydrogen content of the hydrogen-containing silicone oil is 0.5%. The vinyl silicone oil is compounded from vinyl-terminated silicone oils with a viscosity of 10000CS and 1000CS. The release agent is a long-chain alkyl silicone oil of 500CS, and the addition amount is 3 wt%.

[0043] The silane coupling agent is a mixture of silazane and vinyltriethoxysilane with a mass ratio of 5:1 and an added amount of 20 wt%.

[0044] The catalyst is a platinum-vinyl complex, and the addition amount is 3 ppm.

[0045] The polymerization inhibitor is a mixture of methyl butynol and ethynyl cyclohexanol, and the addition amount is 20ppm.

[0046] A preparation method of high modulus silicone mold glue, prepared according to the following me...

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Abstract

The invention provides high-modulus organic silicon mold glue which comprises white carbon black, silane coupling agents, catalysts, polymerization inhibitors, hydrogen-containing silicone oil, vinylsilicone oil and release agents. The content of hydrogen in the hydrogen-containing silicone oil is 0.5%, 500CS-50000CS of end vinyl silicone oil is compounded to form the vinyl silicone oil, the release agents are provided with alkyl siloxane with the viscosity of 50CS-1000CS, adding amount of the release agents is 2wt%-4wt%, and the silane coupling agents are selected from one or more of silazane, methyltrimethoxysilane, diethoxy dimethylsilane, vinyl tri-methoxysilane and vinyltriethoxysilane. The prepared organic silicon mold glue is good in contraction rate and wide in applicable range, can adapt to different curing time and conditions and meets different user curing modes, mode compounding frequency is increased, mould burning cannot be easily generated, the service life of the moldis greatly prolonged, demolding is easily achieved, and raw materials are easily acquired and low in cost.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a high-modulus silicone mold glue and a preparation method thereof. Background technique [0002] Silicone mold rubber is mostly addition-type polydimethylsiloxane rubber, which is a liquid rubber with good fluidity before vulcanization. When using it, you only need to add an appropriate proportion of crosslinking agent and vulcanizing agent to the rubber After mixing, it can be cured into high-strength elastomer at room temperature. Silicone mold glue is suitable for making molds for finished products such as resin handicrafts, imitation agate, imitation jade, imitation mahogany, imitation ivory, carving handicrafts, plaster products, cultural relics reproduction, etc. It can also be used for artificial leather, plastic processing, precision casting, artistic modeling, packaging The insulating material can be formed in situ, the process is simple, the mold simulation ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/07C08L83/05C08L83/04C08K9/06C08K3/36
Inventor 陈华夏敏邓惠山
Owner SHANGHAI JORLE FINE CHEM
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