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Surface coating for building aluminum alloy template capable of preventing concrete adhesion and preparation method of surface coating

A technology of aluminum alloy formwork and surface coating, applied in the direction of coating, etc., to achieve the effect of high mechanical strength, excellent chemical stability, and high bonding strength

Inactive Publication Date: 2020-07-24
ANHUI HUAHUI SUYE TECH SHARE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a kind of anti-concrete adhesion surface coating for building aluminum alloy formwork and preparation method thereof, can solve existing following problems:

Method used

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  • Surface coating for building aluminum alloy template capable of preventing concrete adhesion and preparation method of surface coating
  • Surface coating for building aluminum alloy template capable of preventing concrete adhesion and preparation method of surface coating
  • Surface coating for building aluminum alloy template capable of preventing concrete adhesion and preparation method of surface coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Preparation of modified epoxy resin:

[0037] S1. Under the protection of nitrogen, add 100g of bisphenol A and 300g of epichlorohydrin into the reaction flask, heat to 80°C under stirring, add 1g of tetrabutylammonium bromide, and react for 5h. After the reaction is over, distill under reduced pressure to remove excess Epichlorohydrin, intermediate one;

[0038] S2. Under the protection of nitrogen, add Intermediate 1 and 1.5L of toluene into the reaction flask, heat to 80°C under stirring, add sodium hydroxide, and react for 3 hours to obtain Solution 1;

[0039] S3. Add 100g of bisphenol A to solution 1, heat to 80°C, react for 3 hours, cool the reaction solution to room temperature, add disodium hydrogen phosphate to adjust the pH to 6-7, filter, and wash the filtrate with deionized water for 3 Second, the toluene is removed by organic phase decompression distillation to obtain bisphenol A epoxy resin;

[0040] S4. Under the protection of nitrogen, dissolve 50g of...

Embodiment 2

[0043] Preparation of modified epoxy resin:

[0044] S1. Under the protection of nitrogen, add 100g of bisphenol A and 350g of epichlorohydrin into the reaction flask, heat to 80°C under stirring, add 1g of tetrabutylammonium bromide, and react for 5h. After the reaction is over, distill under reduced pressure to remove excess Epichlorohydrin, intermediate one;

[0045] S2. Under the protection of nitrogen, add Intermediate 1 and 1.5L of toluene into the reaction flask, heat to 80°C under stirring, add sodium hydroxide, and react for 3 hours to obtain Solution 1;

[0046] S3. Add 100g of bisphenol A to solution 1, heat to 80°C, react for 3 hours, cool the reaction solution to room temperature, add disodium hydrogen phosphate to adjust the pH to 6-7, filter, and wash the filtrate with deionized water for 3 Second, the toluene is removed by organic phase decompression distillation to obtain bisphenol A epoxy resin;

[0047] S4. Under the protection of nitrogen, dissolve 50g of...

Embodiment 3

[0050] Preparation of modified epoxy resin:

[0051] S1. Under the protection of nitrogen, add 80g of bisphenol A and 300g of epichlorohydrin into the reaction flask, heat to 80°C under stirring, add 1g of tetrabutylammonium bromide, and react for 5h. After the reaction, the excess is distilled off under reduced pressure. Epichlorohydrin, intermediate one;

[0052] S2. Under the protection of nitrogen, add Intermediate 1 and 1.5L of toluene into the reaction flask, heat to 80°C under stirring, add sodium hydroxide, and react for 3 hours to obtain Solution 1;

[0053] S3. Add 80g of bisphenol A to solution 1, heat to 80°C, react for 3 hours, cool the reaction solution to room temperature, add disodium hydrogen phosphate to adjust the pH to 6-7, filter, and wash the filtrate with deionized water for 3 Second, the toluene is removed by organic phase decompression distillation to obtain bisphenol A epoxy resin;

[0054] S4. Under nitrogen protection, dissolve 50g of hexafluorobu...

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Abstract

The invention discloses a surface coating for a building aluminum alloy template capable of preventing concrete adhesion and a preparation method of the surface coating. The surface coating for the building aluminum alloy template capable of preventing concrete adhesion is prepared from the following raw materials in parts by mass: 15 to 30 parts of modified epoxy resin, 5 to 15 parts of modifiedtitanium dioxide, 15 to 25 parts of polytetrafluoroethylene powder, 30 to 50 parts of ethyl acetate, 5 to 10 parts of N-methyl-2-pyrrolidone, 0.5 to 3 parts of a curing agent and 0.5 to 3 parts of a defoaming agent. The anti-sticking performance, the chemical stability, the heat resistance, the mechanical performance and other performance of the coating are improved by blending the modified epoxyresin, the modified titanium dioxide and the polytetrafluoroethylene powder; the epoxy resin not only has excellent adhesion to metals, but also has lower surface energy after film formation by modifying the epoxy resin, thereby being beneficial to the anti-sticking performance of the coating.

Description

technical field [0001] The invention relates to the technical field of polymer coatings, in particular to a surface coating for a building aluminum alloy formwork that prevents concrete adhesion and a preparation method thereof. Background technique [0002] Anti-adhesive coating is a special coating whose surface is not easily adhered by other sticky substances or easily removed after adhesion. This coating is non-stick due to its extremely low surface energy, low coefficient of friction, and ease of sliding. Currently representative anti-stick coatings mainly include the following categories: silicone anti-stick coatings, fluorocarbon anti-stick coatings and inorganic ceramic anti-stick coatings. [0003] Silicone anti-stick coatings are generally composed of silicone resins, epoxy resins, pigments, fillers and functional additives. Although silicone anti-adhesive coatings have good hydrophobic and anti-adhesive effects, their film hardness and corrosion resistance are p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D187/00C09D127/18C09D7/62C08G81/02C08F220/24C08F230/08C08G59/06
CPCC08F220/24C08G59/063C08G81/024C08K2003/2241C08K2201/011C08L2205/03C09D187/005C09D7/62C08L27/18C08L83/04C08K9/06C08K3/22
Inventor 费邦忠周正华查全达费安道
Owner ANHUI HUAHUI SUYE TECH SHARE CO LTD
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