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Flexible solvent-free epoxy fireproof paint and preparation method thereof

A fire-resistant coating, solvent-free technology, applied in the direction of fire-resistant coatings, epoxy resin coatings, anti-corrosion coatings, etc., can solve the problems that the internal stress of the paint film cannot be eliminated, the fire-resistant coating is easy to crack, and the fire-proof performance of the fire-resistant coating is reduced, so as to achieve convenience Develop solvent-free coatings, avoid migration and exudation, and avoid the effects of dissolution and exudation

Active Publication Date: 2020-03-24
CHINA NAT OFFSHORE OIL CORP +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the current common solvent-free epoxy fireproof coatings have obvious defects-the fireproof coating is easy to crack and fall off, especially under the conditions of thick film thickness and large ambient temperature difference. The main reason for this phenomenon is : (1) The solvent-free epoxy fireproof coating itself uses small molecular liquid epoxy resin as the film-forming resin, and the liquid epoxy resin has obvious post-curing behavior, and the process of post-curing will produce a large amount of internal curing. Stress; (2) The construction film thickness of solvent-free fire retardant coatings is much thicker than that of traditional anti-corrosion coatings. Generally, the film thickness of solvent-free epoxy fire retardant coatings is designed to be about 5-20mm according to fire protection requirements, and the thicker the film thickness, the greater the environmental temperature difference. The greater the impact, the more it will accelerate the accumulation of internal stress in the paint film; (3) The final cured paint film of solvent-free epoxy fireproof coating is characterized by hard and brittle, so the paint film cannot eliminate the existing internal stress. When the internal stress is greater than the paint film When the cohesion of the film is lower, the paint film will crack; when the internal stress of the paint film is greater than the adhesion, the paint film will fall off
If the fire retardant coating has cracked, peeled off and other failure behaviors before encountering fire expansion and foaming, it will not only lead to metal corrosion problems under the fire retardant coating layer, but also cause the substrate to be directly exposed to the flame in the event of a fire. Significantly reduce the fireproof performance of fireproof coatings, which will have a great negative impact on the anticorrosion and fireproof performance of solvent-free fireproof coatings

Method used

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  • Flexible solvent-free epoxy fireproof paint and preparation method thereof
  • Flexible solvent-free epoxy fireproof paint and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0038] The flexible solvent-free epoxy fireproof coating of the present embodiment comprises A component and B component, and the weight ratio of A component and B component is 3:1, and wherein A component is made up of the component of following parts by weight:

[0039] 20 parts of bisphenol A liquid epoxy resin YD-128, 10 parts of Thioplast EPS 70, 5 parts of flame retardant zinc borate, 25 parts of carbon-forming catalyst ammonium polyphosphate, 10 parts of blowing agent A melamine, pigment A TiO 2 15 parts, refractory filler A expanded perlite 10 parts, glass fiber A 2 parts, thixotropic agent R-972 1.5 parts, defoamer DF 6800 1 part, wetting and dispersing agent BYK-1100.5 parts;

[0040] B component is made up of the component of following parts by weight:

[0041] Curing agent Ancamide 502 50 parts, curing agent accelerator tri-(dimethylaminomethyl) phenol 3.5 parts, blowing agent B melamine 15 parts, refractory filler B wollastonite 14 parts, titanium dioxide 10 parts,...

Embodiment 2

[0055] The flexible solvent-free epoxy fireproof coating of the present embodiment comprises A component and B component, and the weight ratio of A component and B component is 3.5:1, and wherein A component is made up of the component of following parts by weight:

[0056] Bisphenol A type liquid epoxy resin YD-128 23 parts, Thioplast EPS 25 3 parts, Thioplast EPS 704 parts, flame retardant triphenyl phosphate 8 parts, carbon forming catalyst ammonium polyphosphate 20 parts, blowing agent A melamine 13 parts, TiO 2 11 parts, carbon black 0.1 part, expanded perlite 6 parts, light calcium carbonate 6 parts, glass fiber 3 parts, thixotropic agent R-974 1 part, defoamer DF6800 1.2 parts, wetting and dispersing agent BYK-110 0.7 share;

[0057] B component is made up of the component of following parts by weight:

[0058] 55 parts of curing agent Ancamide 502, 3 parts of curing agent accelerator tris-(dimethylaminomethyl)phenol, 12 parts of foaming agent B melamine, 12 parts of...

Embodiment 3

[0072] The flexible solvent-free epoxy fireproof coating of the present embodiment comprises A component and B component, and the weight ratio of A component and B component is 4:1, and wherein A component is made up of the following components by weight:

[0073] Bisphenol A type liquid epoxy resin YD-128 25 parts, Thioplast EPS 25 5 parts, flame retardant boric acid 10 parts, carbon forming catalyst ammonium polyphosphate 15 parts, blowing agent A melamine 15 parts, TiO 2 8 parts, 0.2 parts of carbon black, 15 parts of light calcium carbonate, 4 parts of glass fiber, 0.5 parts of thixotropic agent R-208, 1.4 parts of defoamer DF 6800, 0.9 parts of wetting and dispersing agent BYK-110;

[0074] B component is made up of the component of following parts by weight:

[0075] 59 parts of curing agent Ancamide 502, 2 parts of curing agent accelerator tris-(dimethylaminomethyl)phenol, 10 parts of foaming agent B melamine, 10 parts of refractory filler B wollastonite, 14 parts of t...

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Abstract

The invention relates to the technical field of fireproof paint, in particular to a flexible solvent-free epoxy fireproof paint and a preparation method thereof. The flexible solvent-free epoxy fireproof paint provided by the invention comprises a component A and a component B, wherein the component A is composed of the following components by weight: 20-25 parts of epoxy resin, 5-10 parts of modified resin, 5-10 parts of a flame retardant, 15-25 parts of a carbon-forming catalyst, 10-15 parts of a foaming agent A, 8-15 parts of a pigment A, 10-15 parts of refractory filler A, 2-4 parts of anassistant A and 2-5 parts of refractory fiber A, wherein the epoxy resin is bisphenol A type liquid epoxy resin; and the component B is composed of the following components by weight: 50-60 parts of acuring agent, 2-4 parts of a curing agent accelerant, 10-15 parts of a foaming agent B, 10-15 parts of refractory filler B, 10-15 parts of a pigment B, 3-4 parts of an assistant B and 2-5 parts of refractory fiber B.

Description

technical field [0001] The invention relates to the technical field of fireproof coatings, in particular to a flexible solvent-free epoxy fireproof coating and a preparation method thereof. Background technique [0002] At present, the intumescent fire retardant coatings used for hydrocarbon flames are generally solvent-free epoxy fire retardant coatings, which use epoxy resin as a film-forming substance to ensure that the carbonized layer formed after the fire retardant coating expands in the presence of hydrocarbon flames can withstand hydrocarbons. The flame-like impact does not cause the shedding and cracking of the carbonized layer, avoiding the premature exposure of the steel to the flame, and maintaining good fire resistance. At the same time, fireproof coatings using epoxy resins and suitable amine curing agents as base materials have excellent adhesion, hardness, impact resistance, corrosion resistance, heat and humidity resistance and chemical resistance, and can b...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D181/04C09D5/18C09D7/65C09D7/61C09D5/08C08G59/44
CPCC08G59/44C08K2003/387C09D5/08C09D5/185C09D163/00C09D7/61C09D7/65C09D7/70C08L81/04C08K13/04C08K7/26C08K7/12C08K3/34C08K3/38C08K5/523
Inventor 方健君王秀娟周磊王清海徐科张伟丽李敏沈雪锋廉兵杰许洋周丽马胜军李家锋
Owner CHINA NAT OFFSHORE OIL CORP
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