Single-component moisture curable polyurethane waterproof coating and preparation method thereof

A polyurethane waterproof and moisture curing technology, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve the problem of difficult to guarantee the construction quality of waterproof coatings

Inactive Publication Date: 2014-08-06
YANTAI DONGJU WATERPROOF THERMAL INSULATION ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention proposes a single-component moisture-curing polyurethane waterproof coating and its preparation method, which solves the problem that the construction quality of existing waterproof coatings is difficult to guarantee

Method used

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  • Single-component moisture curable polyurethane waterproof coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] 1) Take 14 parts by weight of polyether 220 into the reactor, start stirring, and add 4 parts by weight of polyether 330, 6 parts by weight of chlorinated paraffin, and 0.1 parts by weight of polycarboxylic acid water reducer after stirring for 10 minutes , 1.0 parts by weight of wet silicone Liuping agent levaslip435;

[0039] 2) Heat the mixture in the reactor to 110°C, stir for 20 minutes and add 8 parts by weight of talc, 15 parts by weight of heavy calcium carbonate, 0.1 parts by weight of iron oxide red or black iron oxide, 5 parts by weight Parts of kaolin;

[0040] 3) Continue to heat up to 115~125℃, dehydrate for 180 minutes at -0.09~0.1MPa pressure and stirring, and then cool to below 80℃, add 2 parts by weight of toluene diisocyanate (TDI) to the dehydrated material , 0.5 parts by weight of 100# solvent oil, then increase the temperature to 80~85℃ for 150 minutes;

[0041] 4) After cooling to below 50°C, add 0.1 parts by weight of dibutyltin dilaurate and stir for...

Embodiment 2

[0047] 1) Take 24-25 parts by weight of polyether 220 into the reactor, start stirring, and add 7-8 parts by weight of polyether 330, 16-17 parts by weight of chlorinated paraffin, 0.5-1 parts by weight after stirring for 10 minutes Parts of polycarboxylic acid water reducing agent, 1.5 to 2 parts by weight of wet silicone Liuping agent levaslip435;

[0048] 2) Heat the mixture in the reactor to 110°C, stir for 20 minutes and add 10-12 parts by weight of talc, 19.5-20 parts by weight of heavy calcium carbonate, 0.5-1 parts by weight of iron oxide red or Iron oxide black, 6.5 to 7 parts by weight of kaolin;

[0049] 3) Continue to heat up to 115~125℃, dehydrate for 180 minutes under -0.09~0.1MPa pressure and stirring, and then cool to below 80℃, add 4~5 parts by weight of toluene diisocyanate to the dehydrated material ( TDI), 1 to 1.5 parts by weight of 100# solvent oil, and then increase the temperature to 80-85°C for 150 minutes;

[0050] 4) After cooling to below 50° C., add 0.1...

Embodiment 3

[0056] 1) Take 34 parts by weight of polyether 220 into the reactor, start stirring, and after stirring for 10 minutes, add 14 parts by weight of polyether 330, 26 parts by weight of chlorinated paraffin, and 1.5 parts by weight of polycarboxylic acid water reducer , 2.5 parts by weight of wet silicone Liuping agent levaslip435;

[0057] 2) Heat the mixture in the reactor to 110°C, stir for 20 minutes and add 15 parts by weight of talc, 25 parts by weight of heavy calcium carbonate, 1.5 parts by weight of iron oxide red or black iron oxide, 8 parts by weight Parts of kaolin;

[0058] 3) Continue to heat up to 115~125℃, dehydrate for 180 minutes at -0.09~0.1MPa pressure and stirring, then cool to below 80℃, add 8 parts by weight of toluene diisocyanate (TDI) to the dehydrated material , 2 parts by weight of 100# solvent oil, then increase the temperature to 80~85℃ and react for 150 minutes;

[0059] 4) After cooling to below 50°C, add 0.5 parts by weight of dibutyltin dilaurate and ...

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Abstract

The invention provides a single-component moisture curable polyurethane waterproof coating and a preparation method thereof. The single-component moisture curable polyurethane waterproof coating comprises the following raw materials by weight: 14-34 part of polyether 220, 4-14 parts of polyether 330, 6-26 parts of chlorinated paraffin, 0.1-1.5 parts of a dispersing agent, 1.0-2.5 parts of a wetting surfactant, 8-15 parts of talcum powder, 15-25 parts of heavy calcium carbonate, 0.1-1.5 parts of a pigment, 5-8 parts of kaolin, 2-8 parts of toluene diisocyanate (TDI), 0.5-2 parts of environment-friendly solvent, 0-0.5 part of dibutyltin dilaurate, and 0.8-1.4 parts of a latent curing agent. In the preparation process of the polyurethane coating, the wetting surfactant and the latent curing agent are added, so that even if a fundamental plane with a lot of dust is encountered in a construction process of the coating, sand holes and other problems cannot arise. Adding of the latent curing agent can prevent the coating from undergoing micro-foaming during construction.

Description

Technical field [0001] The invention relates to the field of waterproof coatings, in particular to a single-component moisture-curing polyurethane waterproof coating and a preparation method thereof. Background technique [0002] At present, the waterproof coatings used in the market mainly include polyurethane waterproof coatings, acrylate waterproof coatings and polymer modified emulsified asphalt waterproof coatings. Among them, polyurethane waterproof coatings are very important in the field of waterproof coatings because of their excellent performance and moderate price. Status. Polyurethane waterproof coatings are divided into two-component polyurethane waterproof coatings and one-component polyurethane waterproof coatings. Two-component polyurethane waterproof coatings are composed of two components, A and B. The two components must be weighed and matched in strict accordance with the specified ratio during use. If the A component is added too little, the coating film wil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/08C09D7/12C08G18/76C08G18/48
Inventor 孙文萍韩啸孙承波贾飞代洪银
Owner YANTAI DONGJU WATERPROOF THERMAL INSULATION ENG CO LTD
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