Preparation method of polyurethane waterproof coating

A polyurethane waterproofing and coating technology, applied in coatings and other directions, can solve problems such as harming human health and polluting the environment, and achieve the effects of adjustable color, excellent cost performance and high solid content

Inactive Publication Date: 2014-04-09
江苏民扬塑胶科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Polyurethane waterproof coating is the leading product in building waterproof materials at home and abroad. Tar-type polyurethane waterproof coating is currently one of the most widely used polyurethane waterproof coating varieties in China, but it has been restricted because of its environmental pollution and harm to human health. use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] 1) Mix 20Kg polyether polyol N330, 9Kg polyether polyol DL2000, and 3Kg polyether polyol DL1000, and put them into a vacuum distillation device, dehydrate at 94kPa120~130℃ for 2h, then turn off the vacuum pump, Cool the material to 40°C, then slowly add 6Kg of toluene diisocyanate TDI, react for 1 hour under stirring after the addition, then slowly heat the material to 70-90°C, keep the temperature for 2.5 hours, and discharge the material to obtain polyurethane prepolymer.

[0015] 2) Take 30Kg of water and add 2Kg of bactericide, 4.5Kg of antifreeze, 8Kg of wetting agent, 10Kg of dispersant and 8Kg of defoamer in turn, stir evenly, and then gradually add 15Kg of iron oxide yellow, 42Kg of fluid chlorinated paraffin, and 12Kg of anti-aging Agent, 20Kg ultra-fine fly ash, 16Kg barium sulfate, fully ground by colloid mill until no obvious granular matter.

[0016] 3) Add the prepared 16Kg2) into 25Kg1), add 4Kg thickener, stir for 1 hour, and discharge.

Embodiment 2

[0018] 1) Mix 25Kg of polyether polyol N330, 10Kg of polyether polyol DL2000, and 5Kg of polyether polyol DL1000, and put them into a vacuum distillation device, dehydrate at 94kPa120~130℃ for 2.5h, turn off the vacuum pump, and Cool the material to 40°C, then slowly add 6Kg of toluene diisocyanate TDI, react with stirring for 2 hours after the addition, then slowly heat the material to 70-90°C, keep the temperature for 4.0h, and discharge.

[0019] 2) Take 40Kg water and add 3Kg bactericide, 5Kg antifreeze, 10Kg wetting agent, 11Kg dispersant and 10Kg defoamer in turn, stir evenly, then gradually add 18Kg iron oxide blue, 45Kg fluid chlorinated paraffin wax, 14Kg anti-aging agent , 30Kg ultra-fine fly ash, 20Kg barium sulfate, fully ground by a colloid mill until there are no obvious granular substances.

[0020] 3) Add the prepared 18Kg2) into 30Kg1), add 6Kg thickener, stir for 2 hours, and discharge.

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Abstract

The invention discloses a preparation method of an environmental-protection polyurethane waterproof coating. The preparation method comprises the following steps: 1) preparing a component A, namely a polyurethane prepolymer; 2) preparing a component B, namely a pigment filler; and 3) adding the pigment filler into 20-30 parts of the polyurethane prepolymer, adding a thickening agent, stirring for 1-2 h, and discharging to obtain the environmental-protection polyurethane waterproof coating. The new-generation double-component environmental-protection color polyurethane waterproof coating which contains no any solvent, has high solid content, has no pollution during a construction process, and has stable film coating performance, adjustable colors and excellent cost performance is prepared with a chlorinated paraffin liquid and industrial waste slag fly as a mixed filler.

Description

technical field [0001] The invention relates to a preparation method of a polyurethane waterproof coating, which belongs to the technical field of coatings. Background technique [0002] Polyurethane waterproof coating is the leading product in building waterproof materials at home and abroad. Tar-type polyurethane waterproof coating is currently one of the most widely used polyurethane waterproof coating varieties in China. However, it has been restricted because of its environmental pollution and harm to human health. use. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide an environment-friendly, stable coating film performance and adjustable color polyurethane waterproof coating preparation method. [0004] In order to solve the above problems, the technical solution adopted in the present invention is: a kind of preparation method of environment-friendly polyurethane waterproof coating, and its steps are: [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/08C09D7/12C09D5/00C08G18/48
Inventor 朱卫国
Owner 江苏民扬塑胶科技有限公司
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