Water-based coating and preparation method and application thereof

A water-based coating and coating technology, applied in anti-corrosion coatings, polyurea/polyurethane coatings, coatings, etc., can solve environmental problems such as unfriendly, achieve good wear resistance and flexibility, and excellent UV aging resistance.

Active Publication Date: 2012-07-04
WANHUA CHEM GUANGDONG +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The coating is a solvent-based two-component polyurethane coating, which is not environmentally friendly and does not involve UV resistance

Method used

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  • Water-based coating and preparation method and application thereof
  • Water-based coating and preparation method and application thereof
  • Water-based coating and preparation method and application thereof

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Embodiment Construction

[0033] Embodiments of the present invention are further described below in conjunction with examples. However, the present invention is not limited to the listed embodiments, but also includes any other known changes within the scope of the claims of the present invention.

[0034] The raw material characteristics involved in the embodiments of the present invention are described as follows:

[0035]Hydroxy polyurethane dispersion a: prepared by carbamate reaction of IPDI with polycaprolactone polyol with a molecular weight of 1000 Daltons and dimethylol propionic acid; the hydroxyl content is 1.5 wt%, and the solid content is 50 wt%. For its preparation process, refer to the examples of patent CN1278539A.

[0036] Hydroxyl polyurethane dispersion b: prepared by reacting HDI with polyester polyol with a molecular weight of 3000 Daltons, the hydroxyl content is 2.3 wt%, and the solid content is 40 wt%. For its preparation process, refer to Example 3 of patent CN1813012A.

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Abstract

The invention discloses a water-based coating and a preparation method and an application thereof. The water-based coating belongs to a water-based two-component polyurethane coating for a wind turbine blade, and can be taken as priming paint and finishing paint. Film forming resin consists of a hydroxyl acrylic acid dispersion and a hydroxyl polyurethane dispersion; due to the adoption of a acrylic acid structure and a polyurethane structure, excellent ultraviolet ray resistance and high wear resistance can be provided respectively; and water-dispersible aliphatic diisocyanate is taken as a curing agent. The coating has excellent adhesive ability on the wind turbine blade, has excellent tolerance, and can be used for effectively prolonging the service life of wind power equipment.

Description

technical field [0001] The invention relates to a water-based paint, which belongs to the water-based two-component polyurethane paint and is mainly used as a paint for wind power blades. The paint has high wear resistance and high ultraviolet resistance after being applied to a base material and cured. Background technique [0002] As an emerging green energy, wind power has developed very rapidly in recent years. The development of wind power in my country is relatively late, but it is growing rapidly. In 2010, China newly installed 12,904 wind turbines, continuing to rank first in the world. my country's wind farms are mainly located in the northwest region, and the main characteristics are strong wind and sand and sufficient sunlight. Foreign countries have unified and standardized standards for wind power protection, and the development of wind power coatings has also tended to mature. However, foreign supporting schemes are suitable for good climate and environment,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D5/08C09D7/12
Inventor 邓俊英刘旭阳纪学顺孙家宽郝宝祥华卫琦丁建生
Owner WANHUA CHEM GUANGDONG
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