Solvent-free one-component polyurethane waterproof coating

A polyurethane waterproof, one-component technology, applied in polyurea/polyurethane coatings, epoxy resin coatings, coatings, etc., can solve the problems of polluting the environment, harming the human body, and reducing the mechanical properties of the coating film, achieving high solid content, The effect of reducing damage and low volatile content

Active Publication Date: 2016-02-10
SICHUAN SHUYANG WATERPROOF MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the defects that the existing one-component polyurethane waterproof coating contains plasticizers and solvents, which harm the human body, pollute the environment, and reduce the mechanical properties of the coating film after long-term use, and provide people with an anti-aging, long service life, Environmentally friendly, the coating has good adhesion and water resistance, and the mechanical properties of the coating film are good. Solvent-free one-component polyurethane waterproof coating

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The formula of the solvent-free one-component polyurethane waterproof coating in this example is:

[0017] In weight percentage, polyether EP-330N: 5%, polyether DL-2000D: 40%, diphenylmethane diisocyanate: 20%, self-made epoxy resin: 10%, antioxidant: 0.1%, ultraviolet absorber : 0.1%, defoamer: 0.01%, anti-settling agent: 0.1%, dispersant: 0.5%, catalyst: 0.1%, pigment: 3%, kaolin: 15%, talc: 6.09%.

[0018] The anti-aging agent is anti-aging agent 168, the ultraviolet absorber is ultraviolet absorber UV531, the defoamer is defoamer 6800, the anti-settling agent is anti-settling agent CP-88, the catalyst is dibutyltin dilaurate T-12; the pigment is oxidized iron.

[0019] The preparation method is:

[0020] Add polyether, self-made epoxy resin, anti-settling agent and dispersant to the reaction kettle according to the above formula, stir and heat up to 60°C, gradually add kaolin, talcum powder and pigment, heat up to 120±2°C, dehydrate for 3 hours; cool down To 85±...

Embodiment 2

[0024] The formula of the solvent-free one-component polyurethane waterproof coating in this example is:

[0025] In weight percentage, polyether EP-330N: 10%, polyether DL-2000D: 30%, diphenylmethane diisocyanate: 25%, self-made epoxy resin: 15%, antioxidant: 0.2%, ultraviolet absorber : 0.5%, defoamer: 0.15%, anti-settling agent: 0.5%, dispersant: 0.1%, catalyst: 0.15%, pigment: 0.5%, kaolin: 10%, talc: 7.9%.

[0026] The anti-aging agent is anti-aging agent 1010, and the pigment is phthalocyanine blue.

[0027] All the other are the same as embodiment one.

Embodiment 3

[0029] The formula of the solvent-free one-component polyurethane waterproof coating in this example is:

[0030] In weight percentage, polyether EP-330N: 8%, polyether DL-2000D: 33.5%, diphenylmethane diisocyanate: 21%, self-made epoxy resin: 10%, antioxidant: 0.2%, ultraviolet absorber : 0.15%, defoamer: 0.15%, anti-settling agent: 0.3%, dispersant: 0.1%, catalyst: 0.1%, pigment: 1.5%, kaolin: 15%, talc: 10%.

[0031] The pigment is iron yellow.

[0032] All the other are the same as embodiment one.

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Abstract

The invention relates to a solvent-free one-component polyurethane waterproof coating in the field of waterproof materials. A formula of the solvent-free one-component polyurethane waterproof coating comprises the following components in weight percent: 5-10% of polyether EP-330N, 30-40% of polyether DL-2000D, 20-25% of diphenylmethane diisocyanate, 10-15% of self-made epoxy resin, 0.1-0.2% of an anti-aging agent, 0.1-0.5% of an ultraviolet absorber, 0.01-0.15% of a defoaming agent, 0.1-0.5% of an anti-settling agent, 0.1-0.5% of a dispersing agent, 0.1-0.15% of a catalyst, 0.5-3% of pigment, 10-15% of kaolin and 5-10% of talcum powder. The solvent-free one-component polyurethane waterproof coating provided by the invention overcomes the defects that the existing one-component polyurethane waterproof coating contains a plasticizer and a solvent, does harm to a human body and pollutes the environment and mechanical properties of a film are reduced after long-term use; and the provided solvent-free one-component polyurethane waterproof coating is anti-aging, long in service life and environment-friendly, the adhesion and water resistance of the coating are good, and mechanical properties of the film are good.

Description

technical field [0001] The invention relates to the field of waterproof materials, in particular to a solvent-free one-component polyurethane waterproof coating. Background technique [0002] Existing one-component polyurethane waterproof coatings have added plasticizers and solvents, and the solid content is low. Generally, toluene diisocyanate with high toxicity is used, which is harmful to the human body, and the volatilization of solvents during the curing process pollutes the environment. larger. In order to improve product strength, it is necessary to increase the content of isocyanate; but with the increase of isocyanate content, the flexibility of the coating decreases and the brittleness increases. In the prior art, plasticizers are used to ensure the flexibility of coatings, but with the addition of plasticizers, the strength of coatings decreases, making it difficult to guarantee the strength of coatings; and plasticizers will gradually migrate out after long-ter...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/08C09D163/02C09D7/12C08G18/48C08G18/76
Inventor 骆晓彬黄刚徐锦霞
Owner SICHUAN SHUYANG WATERPROOF MATERIAL
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