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Powder fire-proof paint containing bromine-carbon polyester and preparation method thereof

A technology of bromocarbon polyester and fire retardant coatings, applied in powder coatings, fire retardant coatings, polyester coatings, etc., can solve the problem that the decorative and water resistance physical and mechanical properties of fire retardant coatings are difficult to meet the requirements, and the film-forming substances of fire retardant coatings do not have resistance. In order to overcome the problems of short fire resistance, excellent weather resistance and high decorative effect

Inactive Publication Date: 2008-09-03
LANZHOU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the fire retardant requirements of steel structures and household appliances are getting higher and higher, and the film-forming substances of ordinary fire retardant coatings do not have flame retardant effect, so a large amount of flame retardant additives must be added, which leads to the improvement of decorative and water resistance of fire retardant coatings. , physical and mechanical properties and other aspects are difficult to meet the requirements. At the same time, due to the low relative molecular weight of flame retardant additives, there are disadvantages such as dissolution, migration, exudation, and volatilization. Due to the effect, there is aging decay, which greatly reduces the fireproof effect of fireproof coatings.

Method used

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  • Powder fire-proof paint containing bromine-carbon polyester and preparation method thereof
  • Powder fire-proof paint containing bromine-carbon polyester and preparation method thereof

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preparation example Construction

[0052] The preparation method of bromocarbon-containing polyester powder fireproof coating of the present invention, carries out batching according to above-mentioned prescription, and its preparation steps are:

[0053] a. Mix the epoxy resin E-12 and the liquid leveling agent at high speed for 3 to 5 minutes to obtain the loaded liquid leveling agent;

[0054] b. Mix carboxy-terminated bromocarbon polyester resin, solid leveling agent and load liquid leveling agent, add curing agent, dicyandiamide, titanium dioxide, precipitated barium sulfate, zinc oxide, light calcium carbonate, zinc acetate, Antimony trioxide, molybdenum trioxide and zinc borate are mixed;

[0055] c. Add the above mixed material into the extruder to melt and extrude to obtain the molten material. The temperature of the feeding section is 85-95°C, the temperature of the melting section is 95-105°C, the temperature of the mixing section is 105-120°C, and the temperature of the discharging section is 100~1...

Embodiment 1

[0064] This embodiment is the preparation method of the carboxyl-terminated bromocarbon polyester resin of the present invention.

[0065]a. Add 2000g of dimethyl terephthalate, 950g of ethylene glycol, 750g of neopentyl glycol and 5g of zinc acetate into a reaction flask with fractionating column, stirring, thermometer and inert gas inlet, slowly heat and melt the material, and the material After melting, start stirring, pass inert gas, and react at 150°C to 210°C until 800ml of methanol is released.

[0066] b. Slowly raise the temperature to 230°C to remove 400ml of ethylene glycol, cool down to 200°C, add 750g of tetrabromophthalic anhydride and 140g of adipic acid, raise the temperature to 240°C for esterification, and dehydrate 125ml.

[0067] c. Stop passing the inert gas, add 5g of antimony trioxide, control the pressure reduction polymerization temperature below 240°C, vacuum degree of 15mmHg, react for 1.5h, and take samples to measure the softening point of 110°C. ...

Embodiment 2～3

[0070] The formula of carboxyl-terminated bromocarbon polyester resin is as shown in table 1, and others are identical with embodiment 1.

[0071] Table 1. Formulation of carboxyl-terminated bromocarbon polyester resin

[0072]

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Abstract

The invention provides a powder fire-retardant coating containing bromine carbon polyester and preparation method thereof, comprising( by weight percentage): end-carboxyl bromine carbon polyester resin 55.0-70.0%, curing agent 5.5-7.0%, dicyandiamide 0.3-0.5%, solid flow agent 1.5-2.0%, liquid flow agent 0.5-1.0%, epoxy resin 4.5-9%, white titanium pigment 5.0-20.0%, precipitated barium sulfate 2.0-15.0%, zinc oxide 2.0-15.0%, light calcium carbonate 0-5.0%, zinc acetate 0.3-0.5%, antimony oxide 0.2-0.5%, molybdenum hemitrioxide 0.2-1.0% and zinc borate. The preparation method thereof comprises: mixing the liquid flow agent and epoxy resin; mixing the end-carboxyl bromine carbon polyester resin, solid flow agent and liquid flow agent; adding curing agent, dicyandiamide, white titanium pigment, precipitated barium sulfate, zinc oxide, light calcium carbonate, zinc acetate, antimony oxide, molybdenum hemitrioxide and zinc borate; fusing and extruding the mixture using an extruder; tabletting, crushing, whirlwind separating and screening to obtain the coating.

Description

technical field [0001] The invention relates to a powder fireproof coating and a preparation method thereof. Background technique [0002] Polyester powder coatings have good physical and mechanical properties, electrical insulation properties, anti-corrosion properties and decorative properties. Applied to the decoration and protection of metal surfaces such as steel structures, bicycles, motorcycles, refrigerators, washing machines, agricultural machinery, traffic signs, etc., its performance is significantly better than epoxy powder coatings, epoxy-polyester powder coatings, etc. [0003] At present, the fire retardant requirements of steel structures and household appliances are getting higher and higher, and the film-forming substances of ordinary fire retardant coatings do not have flame retardant effect, so a large amount of flame retardant additives must be added, which leads to the improvement of decorative and water resistance of fire retardant coatings. , physica...

Claims

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Application Information

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IPC IPC(8): C09D167/00C09D5/03C09D5/18
Inventor 杨保平崔锦峰周应萍郭军红张建强崔定伟姚向民刘诗鑫韩培亮
Owner LANZHOU UNIVERSITY OF TECHNOLOGY
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