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Fluorine-containing silicone coating glue and preparation method thereof

The technology of coating adhesive and silicone is applied in the field of fluorine-containing silicone coating and its preparation. Corrosion and other performance issues are not good enough

Active Publication Date: 2022-04-19
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 silicone coating glue and preparation method thereof
  • Fluorine-containing silicone coating glue and preparation method thereof
  • Fluorine-containing silicone coating glue 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 a fluorine-containing silicone coating glue and a preparation method thereof. The fluorine-containing silicone coating rubber is prepared from the following raw materials in parts by weight: 5-100 parts of base rubber A, 5-00 parts of base rubber B, 1-10 parts of crosslinking agent, and substrate tackifier 2-10 parts, 1-5 parts of catalyst, 30-60 parts of solvent; the base gum A is hydroxyl-terminated methyl-3,3,3-trifluoropropyl (siloxane and polysiloxane); The base gum B is a hydrofluorosilicone oil. The above-mentioned fluorine-containing silicone coating adhesive has adjustable curing speed, greatly enhanced oil resistance, salt spray resistance, chemical corrosion resistance, excellent adhesion, and three-proof effect with 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 Patents(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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