Vertical type single-component polyurethane waterproof coating and preparation method thereof

A polyurethane waterproof, one-component technology, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve problems such as non-curing, and achieve the effects of reducing labor costs, saving labor costs, and convenient construction

Inactive Publication Date: 2010-09-01
BEIJING ORIENTAL YUHONG WATERPROOF TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] There is no polyurethane waterproof coating specially used for vertical surfaces in China. The technical difficulty of configuring vertical one-component polyurethane waterproof coating is to make the system reach a semi-fluid state through chemical reaction thickening, but at the same time ensure that it does not solidify and has good storage stability

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The preparation of vertical single-component polyurethane waterproof coating, in a 500ml ground three-neck bottle equipped with a stirrer, reflux condenser, and thermometer, 15 parts of polyether triol, 6 parts of polyether diol, 25 parts Chlorinated paraffin, 6 parts of talcum powder 1250 mesh, 8 parts of kaolin 800 mesh, 13 parts of heavy calcium, 0.5 part of carbon black, 0.08 part of antioxidant, slowly heat up to 120°C while stirring, vacuum pressure below -0098MPa 2h, lower the temperature below 60°C, add 8 parts of solvent oil, 3 parts of solvent oil, 0.005 parts of defoamer, 0.03 parts of catalyst diisobutyltin dilaurate, 0.01 parts of benzoyl chloride, 4 parts of toluene-2, 4-diisocyanate, the temperature is controlled at 65°C-70°C, under stirring, vacuum dehydration reaction for 2h-3h, after the reaction is completed, the temperature is lowered to below 45°C-55°C, 0.4 parts of MDA solution is added under high-speed stirring, and react After 1 to 2 hours, the t...

Embodiment 2

[0032] For the preparation of vertical one-component polyurethane waterproof coating, 20 parts of polyether trihydric alcohol, 5 parts of polyether glycol, 25 parts of Chlorinated paraffin, 6 parts of talcum powder 1250 mesh, 8 parts of kaolin 800 mesh, 15 parts of heavy calcium, 0.6 part of carbon black, 0.08 part of antioxidant, slowly heat up to 120°C while stirring, vacuum pressure below -0098MPa 2h, lower the temperature below 60°C, add 9 parts of solvent naphtha S150, 2 parts of 200# solvent naphtha, 0.006 parts of defoamer, 0.04 parts of catalyst diisobutyltin dilaurate, 0.01 parts of benzoyl chloride , 3.8 parts of toluene-2,4-diisocyanate, the temperature is controlled at 70 ° C, under stirring, vacuum dehydration reaction for 2h ~ 3h, after the reaction is completed, the temperature is lowered to below 50 ° C, 0.6 parts of MDA solution is added under high-speed stirring, and React for 1 to 2 hours, lower the temperature to below 40°C, and flush the discharge with nit...

Embodiment 3

[0034] For the preparation of vertical one-component polyurethane waterproof coating, in a 500ml ground three-necked bottle equipped with a stirrer, a reflux condenser, and a thermometer, 25 parts of polyether triols, 25 parts of chlorinated paraffin, 7 parts of talcum powder 1250 Mesh, 6 parts of kaolin 800 mesh, 13 parts of heavy calcium, 0.5 parts of carbon black, 0.08 parts of antioxidant, slowly heat up to 120°C under stirring, vacuum pressure below -0098MPa for 2 hours, and lower the temperature to below 60°C , add 9 parts of solvent oil S150, 2 parts of 200# solvent oil, 0.005 parts of defoamer, 0.03 parts of catalyst diisobutyltin dilaurate and mix them, 0.01 parts of benzoyl chloride, 4.5 parts of toluene-2,4- Diisocyanate, the temperature is controlled at 70°C, under stirring, the vacuum dehydration reaction is 2h~3h, after the reaction is completed, the temperature is lowered to below 50°C, and 0.6 parts of MDA solution is added under high-speed stirring, and reacted...

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Abstract

The invention provides a vertical type single-component polyurethane waterproof coating. The coating is prepared from the following components in parts by weight: 15-25 parts of polyether trihydric alcohol, 3-5 parts of toluene di-isocyanate, and 0.3-1.0 part of amine curing agent. The invention also provides a method for preparing the waterproof coating. The waterproof coating has the advantages of high strength, high extension, high adhesion property, no benzene or coal tar, safety, environment protection and the like, can be coated on the vertical surface with the thickness of 0.5-1.0mm each time, has no flowing and dropping, and only needs to coat 2-3 times for the vertical surface to reach the thickness of 2mm.

Description

Technical field: [0001] The invention relates to a waterproof coating, in particular to a vertical one-component polyurethane waterproof coating for one-time thick coating on a vertical surface and a preparation method thereof. Background technique: [0002] Polyurethane coating is a new type of material developed in the late 20th century. It has many excellent properties such as oil resistance, wear resistance, acid and alkali resistance, water resistance, chemical medicine and wide construction range, and is one of the coating varieties with better comprehensive properties at present. In the 1970s, it has entered my country's waterproof material market, and has been widely used in roofing, underground engineering, and kitchen and bathroom, and has achieved good waterproof effects. [0003] According to the composition and curing mechanism of the coating film, polyurethane waterproof coatings are divided into two types: single-component and multi-component. At present, tw...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/08C09D5/00C08G18/08C08G18/76
Inventor 田凤兰段文锋杨红艳
Owner BEIJING ORIENTAL YUHONG WATERPROOF TECH CO LTD
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