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CN-122011912-A - Windable fireproof coating and preparation method and application thereof

CN122011912ACN 122011912 ACN122011912 ACN 122011912ACN-122011912-A

Abstract

The invention provides a windable fireproof coating and a preparation method and application thereof, wherein the windable fireproof coating comprises a component A and a component B, the component A comprises polyether diamine type asparaben, a defoamer, calcium carbonate, modified expanded graphite, ceramic fiber, a water absorbent, ammonium polyphosphate and a flame retardant plasticizer, the component B comprises expanded graphite particles and isocyanate, and the modified expanded graphite is a product of a reaction of polyfunctional epoxy resin, polyethyleneimine and oxidized expanded graphite. The polyether diamine type asparagus resin is used as matrix resin, and the modified oxidized expanded graphite is added, so that the crosslinking and synergistic effects among various components are good, the coating is endowed with better flexibility, so that the coating can be wound, meanwhile, the stability, ageing resistance and flame retardance of the product are enhanced, the service life of the coating is longer, the protection effect can be stably exerted in extreme environments, and the problems in the prior art are solved.

Inventors

  • TANG FULONG
  • CUI FUJIN

Assignees

  • 广州市涂安防腐技术有限公司

Dates

Publication Date
20260512
Application Date
20260303

Claims (10)

  1. 1. A windable fireproof paint is characterized in that the windable fireproof paint consists of a component A and a component B, The component A comprises the following components in parts by weight: 25-70 parts of polyether diamine type asparagus resin 0.2-2 Parts of defoaming agent 0.5-5 Parts of calcium carbonate 3-20 Parts of modified expanded graphite Ceramic fiber 0.5-10 parts 0.5-12 Parts of water absorbent 5-45 Parts of ammonium polyphosphate 5-30 Parts of flame retardant plasticizer; the component B comprises the following components in parts by weight: 2-15 parts of expanded graphite particles 85-98 Parts of isocyanate; the modified expanded graphite is a product of the reaction of the multifunctional epoxy resin, the polyethyleneimine and the oxidized expanded graphite.
  2. 2. The windable fire retardant coating of claim 1, wherein said polyether diamine type asparaben has a functionality of 1.8 to 2.
  3. 3. The rollable fire retardant coating according to claim 1, wherein the isocyanate is isophorone diisocyanate trimer.
  4. 4. The windable fire retardant coating of claim 1, wherein the polyethylenimine is a branched polyethylenimine.
  5. 5. The windable fire retardant coating of claim 1, wherein the multifunctional epoxy resin is ethylene glycol diglycidyl ether.
  6. 6. The windable fire retardant coating of claim 1, wherein the flame retardant plasticizer is selected from one or more of tertiary butyl aryl phosphate, triphenyl phosphate, and dibutyl aluminum hypophosphite.
  7. 7. A method of preparing a rollable fire retardant coating according to any one of claims 1 to 6, wherein the method of preparing a rollable fire retardant coating comprises the steps of: S1, mixing oxidized expanded graphite, multifunctional epoxy resin and an accelerator, and heating for reaction to obtain an intermediate product; s2, mixing the intermediate product with polyethyleneimine, and heating for reaction to obtain modified expanded graphite; s3, mixing the modified expanded graphite with the rest of the components in the component A to obtain the component A, and mixing the components in the component B to obtain the component B.
  8. 8. The method of preparing a rollable fire retardant coating according to claim 7, wherein the temperature of the heating reaction is 60-100 ℃.
  9. 9. The method of preparing a rollable fire retardant coating according to claim 7, further comprising: S4, mixing the component A and the component B, and coating the mixture on the surface of a molding plate to prepare a film layer with the thickness of 0.1-5 mm; s5, curing 12-60 h to obtain the windable fireproof paint.
  10. 10. Use of a windable fire-retardant coating according to any one of claims 1 to 6 in fire-retardant construction of steel cables and steel structures.

Description

Windable fireproof coating and preparation method and application thereof Technical Field The invention relates to the technical field of coatings, in particular to a windable fireproof coating and a preparation method and application thereof. Background The conventional fireproof paint is mainly an epoxy system, but the acrylic resin and epoxy fireproof paint are generally poor in flexibility and rigidity, poor in water resistance and extremely easy to absorb moisture. At present, most of the anti-corrosion fireproof protection on the surface of the bridge stay cable can only adopt common fireproof paint with poor protection effect or adopt a mode of winding fiber cloth. The common fireproof paint has limited fireproof performance, is easy to be aged optically to cause the failure of fireproof functions, has the problems of frequent maintenance and high maintenance cost, is wound with aerogel felts, fiber cloths and other fireproof felts on the surface of the diagonal cable, has large self weight, is extremely easy to absorb moisture and absorb water, and has particularly outstanding moisture absorption problems in hot and humid areas in the south and coastal areas. The dead weight of the fiber cloth is obviously increased after moisture absorption, so that the whole load of the stay cable can be increased, and the service life and the use safety of the bridge are seriously affected. In addition, there are also schemes to put forward and set up the sleeve on the surface of the stay cable and protect, but this mode has the sleeve and stay cable to be difficult to the fixed problem effectively, and sleeve diameter is greater than the stay cable, the surface area is bigger, can increase the whole windage of cable-stayed bridge, can't satisfy the windage limit value requirement of cable-stayed bridge. Therefore, aiming at the above-mentioned actual problems of the stayed cable of the cable-stayed bridge in the anti-corrosion fireproof protection, a novel anti-corrosion fireproof coating which can realize the efficient anti-corrosion fireproof of the stayed cable, has light weight and can not increase the wind resistance and the self weight of the cable-stayed bridge, and is convenient to construct and replace and maintain at the same time is developed, and the novel anti-corrosion fireproof coating becomes one of the technical problems to be solved urgently by the technicians in the field. Disclosure of Invention In order to overcome the defects and shortcomings in the prior art, the invention provides a windable fireproof coating, and a preparation method and application thereof. The polyether diamine type asparagus resin is used as matrix resin, and the modified oxidized expanded graphite is added, so that the crosslinking and synergistic effects among various components are good, the coating is endowed with better flexibility, so that the coating can be wound, meanwhile, the stability, ageing resistance and flame retardance of the product are enhanced, the service life of the coating is longer, the protection effect can be stably exerted in extreme environments, and the problems in the prior art are solved. It is an object of the present invention to provide a rollable fire retardant coating, the rollable fire retardant coating being comprised of a component a and a component B, The component A comprises the following components in parts by weight: 25-70 parts of polyether diamine type asparagus resin 0.2-2 Parts of defoaming agent 0.5-5 Parts of calcium carbonate 3-20 Parts of modified expanded graphite Ceramic fiber 0.5-10 parts 0.5-12 Parts of water absorbent 5-45 Parts of ammonium polyphosphate 5-30 Parts of flame retardant plasticizer; the component B comprises the following components in parts by weight: 2-15 parts of expanded graphite particles 85-98 Parts of isocyanate; the modified expanded graphite is a product of the reaction of the multifunctional epoxy resin, the polyethyleneimine and the oxidized expanded graphite. Further, the polyether diamine type asparaguson resin has a functionality of 1.8-2. Further, the isocyanate is isophorone diisocyanate trimer. Further, the polyethyleneimine is a branched polyethyleneimine. Further, the multifunctional epoxy resin is ethylene glycol diglycidyl ether. Further, the flame retardant plasticizer is selected from one or more of tertiary butyl aryl phosphate, triphenyl phosphate and dibutyl aluminum hypophosphite. Further, the phosphorus content of the flame retardant plasticizer is 8-13 wt%. Further, the tertiary butyl aryl phosphate is composed of tertiary butyl phenyl diphenyl phosphate, bis (tertiary butyl phenyl) phenyl phosphate, tris (tertiary butyl phenyl) phosphate. The combination of the three has the advantages of excellent yellow core resistance, excellent hydrolytic stability, low volatility, low atomization and the like, and the foam produced after the addition has the advantages of good compression performance, synergistic flame retardance,