Low-stress epoxy resin intumescent fireproof coating material

A technology of epoxy resin and fireproof coating, which is applied in the field of refractory materials, can solve the problems of new lightweight composite materials such as deformation, insufficient flexibility, and large internal stress of the coating, so as to improve the flame retardant effect, enhance the adhesion, and improve the coating quality. Effect of Layer Bond Strength and Shrinkage Resistance

Pending Publication Date: 2020-08-18
竺浩亮
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the current two-component epoxy system intumescent fire protection coating has high coating hardness and insufficient flexibility, which will cause deformation of some new lightweight composite materials
At the same time, after the existing epoxy-based fireproof coating is dried, the internal stress of the coating is relatively large, and it is easy to separate from the substrate, so it is not suitable for the surface of the amorphous substrate.

Method used

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  • Low-stress epoxy resin intumescent fireproof coating material

Examples

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Comparison scheme
Effect test

Embodiment 1

[0028] This embodiment provides a low-stress epoxy resin expansion type fireproof coating material. The coating material includes two components, A and B, in parts by weight, and the specific composition is as follows:

[0029] Component A: 36 parts of modified epoxy resin, 5 parts of 1-butyl-3-methyltetrafluoroborate, 8 parts of char-forming agent, 7 parts of trimethyl phosphate, 3 parts of melamine phosphate, butanediol 9 parts of alcohol diglycidyl ether;

[0030] The modified epoxy resin is the E-44 epoxy resin modified by phenyltrimethoxysilane; the modification method of the epoxy resin: mix phenyltrimethoxysiloxane and E-44 epoxy resin According to the mass ratio of 1:12, mix well and react at 70-80°C for 4-5h;

[0031] The char-forming agent is a mixture of sulfur-free expandable graphite and graphene oxide, and the mass ratio of the two is 1:0.02; the sulfur-free expandable graphite is a mixed acid system of perchloric acid-phosphoric acid-acetic anhydride, with perm...

Embodiment 2

[0040] This embodiment provides a low-stress epoxy resin expansion type fireproof coating material. The coating material includes two components, A and B, in parts by weight, and the specific composition is as follows:

[0041] Component A: 40 parts of modified epoxy resin, 5 parts of 1-butyl-3-methyltetrafluoroborate, 10 parts of char-forming agent, 7 parts of triisopropylphenyl phosphate, 5 parts of melamine pyrophosphate part, 10 parts of glycerol epoxy resin;

[0042] Described modified epoxy resin and preparation method are with embodiment 1;

[0043] The char-forming agent is a mixture of sulfur-free expandable graphite and graphene oxide, and the mass ratio of the two is 1:0.03; the preparation method is the same as in Example 1.

[0044] Component B: 40 parts of ethylenediamine curing agent, 14 parts of amino-terminated polysulfide rubber, 43 parts of pigment and filler, 30 parts of glass fiber, and 6 parts of tert-butanol;

[0045] Described amino-terminated polysulfi...

Embodiment 3

[0050] This embodiment provides a low-stress epoxy resin expansion type fireproof coating material. The coating material includes two components, A and B, in parts by weight, and the specific composition is as follows:

[0051] Component A: 48 parts of modified epoxy resin, 12 parts of 1-butyl-3-methyltetrafluoroborate, 13 parts of char-forming agent, 9 parts of triethyl phosphate, 6 parts of melamine, n-butyl shrink 13 parts of glycerol ether;

[0052] Described modified epoxy resin and preparation method are with embodiment 1;

[0053] The char-forming agent is a mixture of sulfur-free expandable graphite and graphene oxide, and the mass ratio of the two is 1:0.02; the preparation method is the same as in Example 1.

[0054] Component B: 43 parts of ethylenediamine curing agent, 20 parts of amino-terminated polysulfide rubber, 48 parts of pigment and filler, 30 parts of rock wool, and 8 parts of tert-butanol;

[0055] Described amino-terminated polysulfide rubber and prepa...

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Abstract

The invention relates to a low-stress epoxy resin intumescent fireproof coating material. The material comprises a component A and a component B. The component A specifically comprises the following components in parts by weight: 35-50 parts of modified epoxy resin; 5-13 parts of a diluent; 8-15 parts of a charring agent; 6-10 parts of a flame retardant; 3-6 parts of a foaming agent; and 8-15 parts of a solvent. The component B specifically comprises the following components in parts by weight: 35 to 45 parts of curing agent; 12 to 20 parts of amino-terminated polysulfide rubber; 40 to 50 parts of pigment filler; 23 to 35 parts of refractory fiber; and 3 to 10 parts of solvent. According to the low-stress epoxy resin intumescent fireproof coating material of the invention, the organosilicon-modified epoxy resin matrix, the curing agent and the amino-terminated polysulfide rubber are combined, so that the adhesive force of the matrix can be obviously enhanced, and the bonding strength and shrinkage resistance of the coating can be remarkably improved; and no benzene toxic solvent is used in the formula, so that the coating material is more environment-friendly; and various flame retardants, pigments, fillers and charring agents are combined in the formula, so that a flame-retardant effect is remarkably improved.

Description

technical field [0001] The invention belongs to the technical field of refractory materials, and in particular relates to an epoxy resin expansion type fireproof coating material. Background technique [0002] Intumescent fire retardant coatings have been widely used in fire protection of steel structures due to their advantages such as high expansion coefficient, strong flame retardant performance, good heat insulation and low cost. The main components of intumescent fire retardant coatings include matrix resin, intumescent flame retardant system, pigments and fillers, additives and diluents, etc. The matrix resin mainly includes thermoplastic type and thermosetting type. Thermosetting fireproof coating is a two-component system. The film-forming material is mostly epoxy resin or polyurethane resin. It can be sprayed, rolled, brushed, and wiped. It has excellent sealing properties, acid resistance, alkali resistance, and corrosion resistance. Salt spray, solvent oil resis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/18C09D163/00C09D183/04C09D7/20C09D7/61
CPCC09D5/185C09D163/00C09D7/20C09D7/61C09D7/70C08K2003/387C08K2003/2241C08K2003/2227C08L2201/02C08L81/04C08K13/04C08K7/24C08K3/042C08K3/38C08K3/22C08K7/10C08K5/521C08K7/14C08K5/523C08K5/34922
Inventor 不公告发明人
Owner 竺浩亮
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