Fluorine-containing organic silicon coating adhesive and preparation method thereof

A coating adhesive and silicone technology, which is applied in the field of fluorine-containing silicone coating and its preparation, can solve the problem that the anti-salt spray, chemical corrosion resistance and other properties of the silicone coating are not good enough, and the anti-salt spray and chemical resistance are not good enough. Corrosion performance can not meet the requirements and other problems, to achieve the effect of adjustable curing speed, excellent adhesion, and enhanced chemical corrosion resistance

Active Publication Date: 2020-01-17
GUANGZHOU DAOLIN SYNTHETIC MATERIALS CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the anti-salt spray and anti-chemical corrosion performance of the above-mentioned organic silicon coating rubber is not good enough. In some fields such as chemical industry, military industry, and marine where the environmental conditions are very harsh, the anti-salt spray and anti-chemical corrosion performance cannot meet the requirements.

Method used

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  • Fluorine-containing organic silicon coating adhesive and preparation method thereof
  • Fluorine-containing organic silicon coating adhesive and preparation method thereof
  • Fluorine-containing organic silicon coating adhesive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] This example provides a fluorine-containing silicone coating glue and its preparation method, the steps are as follows:

[0050] (1) Prepare substrate tackifier

[0051] (3,3,3-trifluoropropyl)methyldimethoxysilane, (3,3,3-trifluoropropyl)methyltrimethoxysilane and γ-aminopropyltrimethoxysilane according to The molar ratio is 4:3:3 and mixed and stirred to obtain a mixture.

[0052] Add dropwise an aqueous solution of hydrochloric acid accounting for 30wt% of the total weight of the mixture in the mixture, the concentration of the aqueous solution of hydrochloric acid is 2wt%, the dropping time is controlled at 2h, and the reaction temperature is controlled at 55°C. After the dropwise addition, continue to keep warm React for 2 hours, then wash with water for 3 times, separate the oil layer and dry it, and finally remove the low boilers by distillation under reduced pressure at 80°C and -0.095Mpa to obtain the substrate tackifier.

[0053] (2) Preparation of fluorine-...

Embodiment 2

[0056] This example provides a fluorine-containing silicone coating glue and its preparation method, the steps are as follows:

[0057] (1) Prepare substrate tackifier

[0058] Mix and stir (3,3,3-trifluoropropyl)methyldimethoxysilane and γ-aminopropyltrimethoxysilane at a molar ratio of 1:1 to obtain a mixture.

[0059] In the mixture, add dropwise an aqueous solution of potassium hydroxide accounting for 25wt% of the total weight of the mixture, the concentration of the aqueous solution of potassium hydroxide is 2.5wt%, the dropping time is controlled at 1.5h, and the reaction temperature is controlled at 60° C., dropwise After the addition is complete, continue to keep warm for 3 hours, then wash with water for 3 times, separate the oil layer and dry it, and finally remove the low boilers by distillation under reduced pressure at 80°C and -0.095Mpa to obtain the substrate tackifier.

[0060] (2) Preparation of fluorine-containing silicone coating glue

[0061] Mix 60 part...

Embodiment 3

[0063] This example provides a fluorine-containing silicone coating glue and its preparation method, the steps are as follows:

[0064] (1) Prepare substrate tackifier

[0065] (3,3,3-trifluoropropyl)methyldiethoxysilane, (3,3,3-trifluoropropyl)methyltriethoxysilane and γ-aminopropyltriethoxy The silane is mixed and stirred according to the molar ratio of 1:1:1 to obtain a mixture.

[0066] In the mixture, add dropwise an aqueous solution of hydrochloric acid accounting for 35wt% of the total weight of the mixture, the concentration of the aqueous solution of hydrochloric acid is 1.5wt%, the time for dropping is controlled at 2h, and the reaction temperature is controlled at 60°C. After the dropwise addition, continue Insulate and react for 3 hours, then wash with water for 3 times, separate the oil layer and dry, and finally remove the low boilers by distillation under reduced pressure at 80°C and -0.095Mpa to obtain the substrate tackifier.

[0067] (2) Preparation of fluo...

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Abstract

The invention relates to fluorine-containing organic silicon coating adhesive and a preparation method thereof. The fluorine-containing organic silicon coating adhesive is prepared from the followingraw materials in parts by weight: 5 to 100 parts of base adhesive A, 5 to 100 parts of base adhesive B, 1 to 10 parts of crosslinking agent, 2 to 10 parts of base material tackifier, 1 to 5 parts of catalyst and 30 to 60 parts of solvent, wherein the base adhesive A is hydroxyl terminated methyl-3,3,3-trifluoropropyl(siloxane and polysiloxane); and the base adhesive B is hydrogen-containing fluorosilicon oil. The fluorine-containing organic silicon coating adhesive is adjustable in curing speed and is oil-resistant and salt-spray resistant; the chemical corrosion resistance is greatly enhancedand the adhesive property is excellent; and the fluorine-containing organic silicon coating adhesive has three-prevention effect and excellent performance.

Description

technical field [0001] The invention relates to the field of silicone rubber, in particular to a fluorine-containing silicone coating rubber and a preparation method thereof. Background technique [0002] Due to the diversification of the use environment of electrical power equipment, such as chemical, vibration, high dust, salt spray, humidity and high temperature, etc., the circuit boards used for electrical power equipment may have a series of problems such as corrosion, softening, deformation, and mildew. Cause circuit board circuit failure. Coating glue is mainly used for the surface of PCB circuit boards, glass, metal and various plastics. After coating, it plays a protective role. It has good adhesion to various circuit boards and is used to protect circuit boards and related equipment from Environmental erosion, thereby improving and extending their service life, ensuring the safety and reliability of use. [0003] The coating adhesives currently used in the market...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/08C09D5/08C09D7/63C09J5/02
CPCC09D183/08C09D5/08C09D7/63C09J5/02C08L2205/025C08L83/08C08K5/5419
Inventor 冯钦邦江广荣谌绍林易勇王跃林欧阳喜仁吴利民
Owner GUANGZHOU DAOLIN SYNTHETIC MATERIALS CO LTD
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