Expansive type double-component fireproof sealant and preparation method thereof

A fireproof sealant, two-component technology, applied in the direction of adhesives, adhesive types, polyurea/polyurethane adhesives, etc., can solve the failure of organic metal catalysts, affect product storage stability, and poor substrate adhesion to achieve excellent substrate adhesion, prevent heat transmission, and shorten curing time

Active Publication Date: 2016-08-03
吉林省泽赛新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The fireproof sealants on the market mainly use silicone system or water-based acrylic system, which have long curing time, poor mildew resistance, poor high and low temperature resistance, low structural strength, poor water resistance, and adhesion to certain substrates. lack of focus
For polyurethane sealant, since the residual amount of water in the powder flame retardant is relatively large, the general polyurethane sealant can only use more liquid flame retardant and a small amount of powder flame retardant, otherwise Excessive moisture will invalidate the organometallic catalyst in the sealant, resulting in non-curing during use and affecting product storage stability

Method used

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  • Expansive type double-component fireproof sealant and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0029] In parts by weight, 80 parts of trihydroxypolyoxypropylene ether with a hydroxyl value of 336 mgKOH / g, 20 parts of polycaprolactone diol with a hydroxyl value of 112 mgKOH / g, 38 parts of dimethyl methylphosphonate, and 50 parts of expandable graphite 70 parts of magnesium hydroxide, 32 parts of quartz powder, 50 parts of calcium carbonate, 0.03 parts of dibutyltin dilaurate, 0.2 parts of 1,8-diazabicycloundec-7-ene phenoxide, 2-amino 0.6 parts of ethanol, 4 parts of 3-ethanol-2-methylethyl oxazolidine, 8 parts of fumed silica, 2 parts of γ-aminopropyltriethoxysilane, carbodiimide modified diphenyl 30 parts of methane diisocyanate, 44 parts of polymethylene polyphenyl polyisocyanate.

[0030] The preparation method of the intumescent fireproof sealant is as follows: add trihydroxypolyoxypropylene ether, polycaprolactone diol, and dimethyl methylphosphonate into a planetary mixer, and vacuumize and dehydrate at 50°C for 2 hours; Add expandable graphite, magnesium hydroxi...

Embodiment 2

[0032] In parts by weight, 30 parts of dihydroxypolyoxypropylene ether with a hydroxyl value of 112 mgKOH / g, 70 parts of polycaprolactone trihydric alcohol with a hydroxyl value of 336 mgKOH / g, and 30 parts of tris (β-chloroethyl) phosphate , 45 parts of expandable graphite, 25 parts of micronized graphite, 25 parts of type II ammonium polyphosphate, 10 parts of melamine, 10 parts of pentaerythritol, 40 parts of mica powder, 50 parts of calcium carbonate, 0.02 parts of bismuth neodecanoate, 22% organic zinc 0.2 parts, 0.18 parts of 1,8-diazabicycloundec-7-ene octanoate, 0.66 parts of aminopropanol, bis[2-(2-isopropyl-3-oxazolinyl) ethyl Base] carbonate 5 parts, polyurethane urea oligomer solution 2 parts, γ-methacryloxypropyl trimethoxysilane 2.5 parts, carbodiimide modified diphenylmethane diisocyanate 60 parts, 3 - 8.5 parts of isocyanatomethylene-3,5,5-trimethylcyclohexyl isocyanate.

[0033] The preparation method of the intumescent fireproof sealant is as follows: add di...

Embodiment 3

[0035]In parts by weight, 85 parts of trihydroxypolyoxypropylene ether with a hydroxyl value of 168 mgKOH / g, 15 parts of polymer-grafted polyols with a hydroxyl value of 28 mgKOH / g, and 30 parts of tris(β-chloropropyl) phosphate, expandable 50 parts of graphite, 60 parts of micronized graphite, 17 parts of talc, 30 parts of wollastonite, 40 parts of calcium carbonate, 0.06 part of phenylmercury acetate, 0.1 part of lead isooctanoate, 1,8-diazabicycloundecene- 0.24 parts of 7-ene octanoate, 1.05 parts of aminobutanol, 4.5 parts of 3-butyl-2-(1-ethylpentyl) oxazolidine, 5 parts of organic bentonite, phytanic acid monoalkoxy 2.1 parts of titanate, 29 parts of polymethylene polyphenyl polyisocyanate, 5 parts of 3-isocyanatomethylene-3,5,5-trimethylcyclohexyl isocyanate.

[0036] The preparation method of the intumescent fireproof sealant is as follows: adding trihydroxypolyoxypropylene ether, polymer grafted polyol, and tris(β-chloropropyl) phosphate into a planetary mixer, and va...

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Abstract

The invention relates to an expansive type double-component fireproof sealant and a preparation method thereof, and belongs to the technical field of fireproof sealing materials .The expansive type double-component fireproof sealant is prepared from 100 parts of polyhydric alcohol, 30-38 parts of liquid phosphate fire retardant, 110-126 parts of powder fire retardant, 80-115 parts of filler, 0.03-0.22 part of organo-metallic catalyst, 0.18-0.24 part of hydrolysis-resistant thermosensitive catalyst, 4-6 parts of water removal agent, 2-8 parts of thixotropic agent, 0.6-1.25 parts of catalytic activator, 2-2.5 parts of coupling agent and 33-74 parts of polyisocyanate .The expansive type double-component fireproof sealant and the preparation method thereof have the advantages that polyurethane resin is adopted as a matrix, the base material adhesive force of the sealant is more excellent than that of a fireproof sealant with organic silicon resin or water-based acrylic resin as a matrix, the sealant has excellent fire resistance and high temperature resistance, expansion can occur after a fire happens, a compact carbon layer is formed, the functions of preventing flames from continuously burning and stopping heat spreading are achieved, and the product expiration date is greatly prolonged .

Description

technical field [0001] The invention relates to the technical field of fireproof sealing materials, in particular to an intumescent two-component fireproof sealant and a preparation method thereof. Background technique [0002] Fireproof sealant is mainly used for fireproof separation of through holes formed when cables, bridges, tank boxes, air ducts, material conveying pipes, etc. pass through walls and floors. Compared with traditional fireproof sealing materials such as fireproof plaster, fireproof mud and fireproof bag, it has the advantages of convenient construction, long service life, good weather resistance, earthquake resistance and crack resistance, good adhesion to most substrates, and no corrosion of cables. . [0003] The fireproof sealants on the market mainly use silicone system or water-based acrylic system, which have long curing time, poor mildew resistance, poor high and low temperature resistance, low structural strength, poor water resistance, and adhe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/08C09J175/06C08G18/42C08G18/40C08G18/48
CPCC08G18/4018C08G18/4072C08G18/4277C08G18/4812C08G18/4825C08G18/4829C08G2190/00C09J175/06C09J175/08
Inventor 徐福生
Owner 吉林省泽赛新材料有限公司
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