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Preparation method of high-temperature-resistant polyurea elastic flame-retardant waterproof coating

A waterproof coating and high temperature resistant technology, applied in polyurea/polyurethane coatings, anti-corrosion coatings, fire-resistant coatings, etc., can solve the problems of low cost, water resistance of concrete surface, easy pollution, etc., and shorten the construction period.

Inactive Publication Date: 2020-03-06
萧县金虹新型防水建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The film has extremely strong compactness, uniform distribution and strong binding ability, and is low in cost. It can improve the obvious defects such as water resistance and easy pollution on the concrete surface.

Method used

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  • Preparation method of high-temperature-resistant polyurea elastic flame-retardant waterproof coating

Examples

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Effect test

Embodiment 1

[0033] A preparation method of high temperature resistant polyurea elastic flame retardant waterproof coating, comprising the following steps:

[0034] 1. Preparation of grafting solution:

[0035] Weigh 25 parts by weight of isooctyl acrylate and 1.5 parts by weight of organosiloxane coupling agent and dissolve them in 85 parts of solvent to obtain a grafting solution; the organosiloxane coupling agent is β-(3,4-ring Oxycyclohexyl) ethyltrimethoxysilane, the solvent is chloroform;

[0036] Second, the preparation of polyurethane emulsion solution:

[0037] After vacuum dehydration of 25 parts of hydroxyl-terminated polybutadiene liquid rubber with a number average molecular weight of 2500, add 24 parts of lysine triisocyanate and 42 parts of methyl ethyl ketone, mix well, react at 80°C for 1 hour, cool to room temperature, drop Dilute 0.5 part of bismorpholino diethyl ether with 7 parts of butanone, control the rate of addition, after the dropwise addition for 10 minutes, k...

Embodiment 2

[0054] A preparation method of high temperature resistant polyurea elastic flame retardant waterproof coating, comprising the following steps:

[0055] 1. Preparation of grafting solution:

[0056] Weigh 35 parts by weight of 2-hydroxyethyl methacrylate and 3.0 parts by weight of organosiloxane coupling agent and dissolve them in 95 parts of solvent to obtain a grafting solution; the organosiloxane coupling agent is γ-isocyanate Propyltrimethoxysilane, the solvent is tetrahydrofuran;

[0057] Second, the preparation of polyurethane emulsion solution:

[0058] After vacuum dehydration of 33 parts of hydroxyl-terminated polybutadiene liquid rubber with a number average molecular weight of 5000, add 26 parts of lysine triisocyanate and 53 parts of methyl ethyl ketone, mix well, react at 85°C for 3 hours, cool to room temperature, drop Dilute 1 part of bismorpholinyl diethyl ether with 7 parts of butanone, control the rate of addition, after the dropwise addition for 20 minutes,...

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Abstract

The invention belongs to the technical field of waterproof coatings, and in particular, relates to a preparation method of a high-temperature-resistant polyurea elastic flame-retardant waterproof coating. The polyurea elastomer coating prepared by the preparation method disclosed by the invention has the advantages of high solid content, greenness, environmental friendliness, thick, compact and flexible coating film, strong adhesive force with a substrate, excellent ultraviolet resistance, impact resistance and the like, and simplicity and convenience in construction, adopts vinyl ester resinto modify a polyurea coating, and does not contain any hydroxyl component or catalyst. The reaction activity of an amino-terminated compound and an isocyanate component is extremely high, no catalystis needed, the high temperature resistance of the coating is further improved, and the coating has a good application prospect.

Description

technical field [0001] The invention belongs to the technical field of waterproof coatings, in particular to a preparation method of high-temperature-resistant polyurea elastic flame-retardant waterproof coatings. Background technique [0002] Polyurea elastic waterproof material is a polyurea elastomer material composed of isocyanate semi-prepolymer, aromatic amine chain extender, polyether, pigment and additives and other main raw materials. It is a "green and environmentally friendly" new spraying technology that adopts new equipment and new technology to spray and form on-site. It is one of the most sophisticated spraying technologies in the world at present. Super-heavy anti-corrosion materials are mainly used for anti-corrosion and waterproofing of concrete storage tanks and ancillary facilities in various industries such as sewage treatment tanks, drainage ditches, pickling tanks, electroplating tanks, neutralization tanks, evaporation tanks, petroleum, chemical, oil ...

Claims

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Application Information

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IPC IPC(8): C09D151/08C09D175/08C09D163/10C09D5/18C09D5/08C09D7/61C08F283/00C08F220/18C08F220/20
CPCC08F283/006C08K2201/014C08L2201/08C08L2205/03C09D5/08C09D5/18C09D7/61C09D7/70C09D151/08C09D175/08C08F220/20C08L63/10C08L75/08C08K13/04C08K7/26C08K3/34C08L51/08
Inventor 余敏侠
Owner 萧县金虹新型防水建材有限公司
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