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One-component reaction thixotropic polyurethane waterproof coating and preparation method thereof

A polyurethane waterproof, one-component technology, applied in the direction of coating, etc., can solve the problems of time-consuming and laborious, poor constructability, large polyurethane waterproof coating, etc., and achieve the effect of particularly serious flow and good constructability

Active Publication Date: 2017-05-17
XUZHOU WONIUSHAN NEW WATERPROOF MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the applicant found in the long-term construction that the polyurethane waterproof coating caused by this scheme maintained a very high viscosity during the entire construction process, and the workability was poor, which caused the construction site to be time-consuming and troublesome.

Method used

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  • One-component reaction thixotropic polyurethane waterproof coating and preparation method thereof
  • One-component reaction thixotropic polyurethane waterproof coating and preparation method thereof
  • One-component reaction thixotropic polyurethane waterproof coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Raw material ratio:

[0028]

[0029] crafting process:

[0030] a. Add 60-100 parts by weight of polyether polyol, 20-40 parts by weight of plasticizer, and 20-80 parts by weight of pigments and fillers into the reaction vessel, stir and heat up to 100°C-130°C, and the vacuum is -0.01 Dehydration under the condition of MPa for 2 to 3 hours;

[0031] b. Lower the temperature below 60°C-80°C, add 10-25 parts by weight of isocyanate, and react for 2-3 hours under stirring at 60-100°C;

[0032] c. Lower the temperature to 50°C-60°C, add 0.1-1 parts by weight of a polymerization inhibitor and 0.1-1 parts by weight of an amine reactant, and react for 2 to 3 hours under stirring at 55-65°C;

[0033] d. Lower the temperature to below 50°C-60°C, add 0.2-1 parts by weight of catalyst and 0.1-1 parts by weight of high-performance additives, stir for 1-2 hours, and after the dispersion is uniform, lower the temperature to below 30°C-40°C to fully Nitrogen protection, dischar...

Embodiment 2

[0035] Raw material ratio:

[0036]

[0037] Technological process is identical with embodiment 1.

Embodiment 3

[0039] Raw material ratio:

[0040]

[0041]

[0042] Technological process is identical with embodiment 1.

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Abstract

The invention discloses a single-component reactive thixotropic polyurethane waterproof paint which comprises the following components in parts by weight: 10-25 parts of isocyanate, 60-100 parts of polyether, 20-40 parts of plasticizer, 0.1-1 part of polymerization inhibitor, 0.1-1 part of amine reactant, 0.2-1 part of catalyst, 20-80 parts of pigment and filler, 5-20 parts of solvent and 0.1-1 part of high-performance assistant. The amine reactant is one or mixture of more of diaminodiphenyl ether, diamidodicyclohexyl methane, dialkylol amine and the like. The polyurethane waterproof paint has favorable thixotropic properties, and basically does not flow when being applied 2-3 times into a 1.5-2 mm coating in facade construction, thereby solving the problems of severe flow and difficulty in thickness increase in facade construction of the existing single-component polyurethane waterproof paint, effectively reducing the waste of materials and enhancing the operating efficiency and operating quality.

Description

technical field [0001] The invention relates to a building waterproof coating, in particular to a single-component reaction thixotropic polyurethane waterproof coating and a preparation method thereof. Background technique [0002] Polyurethane waterproof coating belongs to chemical reaction type waterproof coating. After curing, it is a kind of rubber-like high-elastic coating film. This material is widely used in the world because of its excellent comprehensive performance. According to its composition and curing mechanism, polyurethane waterproof coatings can be divided into two categories: single-component and multi-component. The on-site construction of multi-component polyurethane waterproof coatings needs to be proportioned according to a certain proportion and mechanically stirred. Bubbles introduced during the mixing process, inaccurate ingredients, and uneven mixing will affect the product quality, and the waterproof quality accidents caused by this are sometimes ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/08C09D7/12C08G18/66C08G18/48
CPCC08K2003/2241
Inventor 李红英杨红艳刘艳丰贾建军
Owner XUZHOU WONIUSHAN NEW WATERPROOF MATERIALS
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