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Silicone-type coatings and preparation method thereof

A silicone resin and coating technology, applied in the coating and other directions, can solve the problems of unfavorable electronic and electrical repair, easy dust accumulation, poor combination of elasticity, hardness and toughness, etc., to achieve comprehensive protection during production and use, shock resistance and damage resistance. The effect of improving airtightness, good air tightness and toughness

Inactive Publication Date: 2010-08-18
陈俊光
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Now the domestic market mainly uses silicone rubber as the main coating material, which is easy to use, but because of its poor toughness, poor coating performance, poor elasticity, hardness and toughness, it is not conducive to the repair of electronic appliances and is not durable. , easy to accumulate dust, it is necessary to change its toughness, surface condition and applicable conditions to meet more and wider protection needs and improve the service life of electronic and electrical products

Method used

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  • Silicone-type coatings and preparation method thereof
  • Silicone-type coatings and preparation method thereof
  • Silicone-type coatings and preparation method thereof

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0067] Synthesis of components

[0068] A1: Preparation of MQ silicone resin containing hydroxyl (-OH) or alkoxy (-OR)

[0069] In a four-necked bottle, add 448g of 16-18% hydrochloric acid aqueous solution. Under rapid stirring, add 3# water glass and water mixture (sio 2 Content 11.13%) 546g. After the addition is complete, add 220 grams of isopropanol over 3 minutes, stir for 1-2 minutes, then add a mixture of 77 grams of toluene and 20 grams of trimethylchlorosilane after 20 minutes, keep it at reflux temperature for 1 hour; then add toluene After 120g is cooled, separate into layers and wash with water. Then the water and part of the solvent are removed under reduced pressure to obtain a 50% solid content product and toluene mixture, structural formula

[0070] Put 100g of the above resin into a flask, add 10g of methyl orthosilicate and 15g of acetic acid, stir and react at 60-65°C for 3-4 hours, and then remove low molecular reactants and unreacted substances under reduced ...

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Abstract

The invention discloses a preparation method of silicone-type coatings prepared by mixing a silicone component A containing hydroxyl or alkoxy, a silicone oil component B containing linear terminated-hydroxyl, a white carbon black component C, a cross-linking agent component D, a catalyst component E and a tackifier component F. The invention is used for preparing various insulated moisture-curedcoatings with different kinds of viscosity, strength and toughness and strong adhesion by synthesizing various forms of silicones containing hydroxyl or alkoxy and mutually collocating terminated-hydroxyl linear polysilane. The silicone-type coatings have better protection performance and have favorable protection efficacy of resisting water, dampness, shock, aging, dust and corrosion, insulating, and the like for various electronic components, circuit boards and live devices.

Description

Technical field: [0001] The product of the invention relates to a method for preparing a silicone resin coating material, in particular to a method for preparing a single-component moisture-cured silicone resin type electronic and electrical materials and surface coating protective coatings for devices technical background [0002] Protective coatings such as waterproof, moisture-proof, dust-proof, anti-static, shock-proof, anti-corrosion, insulation, etc. of various electronic and electrical products are the key link to ensure product quality, stability and durability. [0003] At present, the protective coating materials on the market are mainly moisture-cured single and two-component polyamino acids, as well as moisture-curable acrylates and epoxy adhesives. However, polyamic acid coating materials will become hard, brittle, and yellowish severely in the later period of use, which will cause cracks and fall off or fail; acrylic coating materials are not resistant to water or moi...

Claims

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Application Information

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IPC IPC(8): C09D183/06C09D7/12
Inventor 陈俊光
Owner 陈俊光
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