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CN-121991558-A - Composite intumescent flame retardant coating, preparation method thereof and flame retardant equipment

CN121991558ACN 121991558 ACN121991558 ACN 121991558ACN-121991558-A

Abstract

The application discloses a composite intumescent flame retardant coating, a preparation method thereof and flame retardant equipment. The composite intumescent flame retardant coating comprises flame retardant raw materials, a flame retardant solvent, an auxiliary agent and a flame retardant solvent, wherein the flame retardant raw materials comprise, by weight, 5-10 parts of expandable graphite, 5-15 parts of aluminum hydroxide, 5-15 parts of inorganic aluminum hypophosphite and 0.1-5 parts of titanium dioxide, the flame retardant solvent comprises at least one of ethyl acetate and polyacrylic resin, the auxiliary agent comprises at least one of dispersing agent, defoaming agent, leveling agent and diluting agent, and the weight ratio of the flame retardant raw materials to the flame retardant solvent is 3 (4-10). Therefore, the composite intumescent flame retardant coating has good flame retardant property, can reach the 5VA standard, does not contain halogen in components, does not release harmful gas during combustion reaction, is environment-friendly, has strong water resistance, weather resistance and adhesive force, is simple in preparation method, can be produced in a large scale, and is wide in application.

Inventors

  • Ruan Linwei
  • Yang leting
  • SHEN JIAN
  • LI BIN
  • LI XING
  • LIU YANGSHENG

Assignees

  • 合肥华凌股份有限公司
  • 合肥美的电冰箱有限公司
  • 美的集团股份有限公司

Dates

Publication Date
20260508
Application Date
20241106

Claims (10)

  1. 1. A composite intumescent flame retardant coating comprising: The flame-retardant material comprises, by weight, 5-10 parts of expandable graphite, 5-15 parts of aluminum hydroxide, 5-15 parts of inorganic aluminum hypophosphite and 0.1-5 parts of titanium dioxide; a flame-retardant solvent comprising at least one of ethyl acetate and polyacrylic resin; the auxiliary agent comprises at least one of a dispersing agent, a defoaming agent, a leveling agent and a diluting agent; The weight ratio of the flame-retardant raw material to the flame-retardant solvent is 3 (4-10).
  2. 2. The composite intumescent flame retardant coating of claim 1 wherein said expandable graphite has a mesh size of 200-400 mesh.
  3. 3. The composite intumescent flame retardant coating of claim 1 wherein the weight of said auxiliary comprises 20% -40% of the total weight of said flame retardant raw material and said flame retardant solvent; the dispersing agent comprises at least one of BYK-110, BYK-163, BYK-180, BYK-9076 and BYK-P104S; The defoamer comprises at least one of tributyl phosphate, trioctyl phosphate, amyl phosphate, diethyl hexanol, isooctanol and isoamyl alcohol; The leveling agent comprises at least one of BYK-331, BYK-348, BYK-345, BYK-349 and BYK-354; The diluent comprises at least one of ethyl acetate, dimethyl carbonate, butanone and butyl ester.
  4. 4. The composite intumescent flame retardant coating of claim 3, wherein the weight ratio of said flame retardant raw material, said flame retardant solvent, said diluent, said defoamer, said dispersant, said leveling agent is (25-35): (45-55): (15-25): (0.1-0.5): (0.1-0.5): (0.1-0.5).
  5. 5. A flame retardant apparatus, comprising: A base; The flame-retardant coating layer is arranged on the surface of the substrate, the flame-retardant coating layer comprises the composite intumescent flame-retardant coating as set forth in any one of claims 1-4, and the thickness of the flame-retardant coating layer is 0.2-0.3mm.
  6. 6. A method of preparing a composite intumescent flame retardant coating comprising: Weighing 5-10 parts of expandable graphite, 5-15 parts of aluminum hydroxide, 5-15 parts of inorganic aluminum hypophosphite and 0.1-5 parts of titanium dioxide according to parts by weight, and performing ball milling and mixing to form a flame-retardant raw material; providing a flame-retardant solvent, wherein the flame-retardant solvent comprises at least one of ethyl acetate and polyacrylic resin; Mixing and grinding the flame-retardant raw material and the flame-retardant solvent according to the mass ratio of 3 (4-10) to form a flame-retardant mixture; and adding an auxiliary agent into the flame-retardant mixture, wherein the auxiliary agent comprises at least one of a dispersing agent, a defoaming agent, a leveling agent and a diluent to form the composite intumescent flame-retardant coating.
  7. 7. The method of claim 6, wherein the expandable graphite has a mesh size of 200-400 mesh.
  8. 8. The method according to claim 6, comprising: The condition of mixing the flame-retardant mixture and the auxiliary agent is that the flame-retardant mixture with uniform solid/liquid dispersion is formed by fully grinding by a roller press, and then the mixture is stirred for 15-30min at the rotating speed of 1000-1500rpm, so as to form the composite expansion type flame-retardant coating.
  9. 9. The method of claim 6, wherein the auxiliary comprises 20% to 40% by weight of the flame retardant mixture; the dispersing agent comprises at least one of BYK-110, BYK-163, BYK-180, BYK-9076 and BYK-P104S; The defoamer comprises at least one of tributyl phosphate, trioctyl phosphate, amyl phosphate, diethyl hexanol, isooctanol and isoamyl alcohol; The leveling agent comprises at least one of BYK-331, BYK-348, BYK-345, BYK-349 and BYK-354; The diluent comprises at least one of ethyl acetate, dimethyl carbonate, butanone and butyl ester.
  10. 10. The method according to claim 9, wherein the weight ratio of the flame retardant raw material, the flame retardant solvent, the diluent, the defoamer, the dispersant, and the leveling agent is (25-35): (45-55): (15-25): (0.1-0.5): (0.1-0.5): (0.1-0.5).

Description

Composite intumescent flame retardant coating, preparation method thereof and flame retardant equipment Technical Field The application relates to the technical field of flame-retardant coatings, in particular to a composite intumescent flame-retardant coating, a preparation method thereof and flame-retardant equipment. Background With the acceleration of the urban process, people live in high-rise buildings, casualties caused by fire accidents are frequent each year, and the equipment and facilities of the current household appliances, wooden furniture and the like gradually develop in the flame retardant and incombustible directions so as to reduce the loss caused by the fire. The flame-retardant composite coating is prepared by coating the coating on the surface of a substrate, and can effectively prevent or reduce the spread of fire when the fire occurs, obviously reduce the loss caused by the fire, and has the advantages of low cost, flexible use, wide application and the like. Flame retardant coatings can be classified into non-intumescent fire-retardant Xu Liao and intumescent fire-retardant coatings according to their fire-retardant form and composition. Although the conventional halogen-based flame retardant coating has excellent flame retardant effect, it generates a large amount of fatal smoke and toxic gas in a fire (in a high temperature environment), and the rapidly spreading smoke and gas may cause choking and casualties of people. Therefore, the current composite intumescent flame retardant coating, the preparation method thereof and flame retardant equipment still need to be improved. Disclosure of Invention The embodiment of the disclosure provides a composite intumescent flame retardant coating, a preparation method thereof and flame retardant equipment, which are used for solving or relieving one or more technical problems in the related art. As a first aspect of the embodiment of the disclosure, the application provides a composite intumescent flame retardant coating, which comprises flame retardant raw materials, a flame retardant solvent, an auxiliary agent and a flame retardant coating, wherein the flame retardant raw materials comprise 5-10 parts of expandable graphite, 5-15 parts of aluminum hydroxide, 5-15 parts of inorganic aluminum hypophosphite and 0.1-5 parts of titanium dioxide in parts by weight, the flame retardant solvent comprises at least one of ethyl acetate and polyacrylic resin, the auxiliary agent comprises at least one of dispersing agent, defoaming agent, leveling agent and diluent, and the weight ratio of the flame retardant raw materials to the flame retardant solvent is 3 (4-10). In some possible embodiments, the expandable graphite has a mesh size of 200-400 mesh. In some possible embodiments, the weight of the auxiliary agent accounts for 20% -40% of the total weight of the flame retardant raw material and the flame retardant solvent, the dispersing agent comprises at least one of BYK-110, BYK-163, BYK-180, BYK-9076 and BYK-P104S, the defoaming agent comprises at least one of tributyl phosphate, trioctyl phosphate, amyl phosphate, diethyl hexanol, isooctyl alcohol and isoamyl alcohol, the leveling agent comprises at least one of BYK-331, BYK-348, BYK-345, BYK-349 and BYK-354, and the diluting agent comprises at least one of ethyl acetate, dimethyl carbonate, butanone and butyl ester. In some possible embodiments, the weight ratio of the flame retardant raw material, the flame retardant solvent, the diluent, the defoamer, the dispersant, and the leveling agent is (25-35): (45-55): (15-25): (0.1-0.5): (0.1-0.5): (0.1-0.5). As a second aspect of the embodiments of the present disclosure, the present disclosure provides a flame retardant apparatus including a substrate, a flame retardant coating layer disposed on a surface of the substrate, the flame retardant coating layer including the composite intumescent flame retardant coating of any one of the foregoing, the flame retardant coating layer having a thickness of 0.2 to 0.3mm. As a third aspect of the embodiment of the disclosure, the application provides a method for preparing a composite intumescent flame retardant coating, which comprises the steps of weighing 5-10 parts of expandable graphite, 5-15 parts of aluminum hydroxide, 5-15 parts of inorganic aluminum hypophosphite and 0.1-5 parts of titanium dioxide according to parts by weight, performing ball milling and mixing to form a flame retardant raw material, providing a flame retardant solvent, wherein the flame retardant solvent comprises at least one of ethyl acetate and polyacrylic resin, mixing and grinding the flame retardant raw material and the flame retardant solvent according to a mass ratio of 3 (4-10) to form a flame retardant mixture, and adding an auxiliary agent into the flame retardant mixture, wherein the auxiliary agent comprises at least one of a dispersing agent, a defoaming agent, a leveling agent and a diluting agent to form the comp