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A kind of water-based paint and its preparation method and application method

A water-based paint and coating technology, applied in the direction of polyurea/polyurethane paint, coating, etc., can solve the problem of water resistance, acid and alkali resistance of closed coatings, poor physical and tender indicators, easy to exceed chemical volatile substances, and poor process. Environmental protection and other issues, to achieve the effect of keeping the appearance for a long time, beautiful appearance, simple manufacturing method and use method

Active Publication Date: 2018-01-19
FOSHAN CITY GREEND CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the prior art, organic solvent-based sealing coatings are often used in the third step, such as thermosetting acrylic coatings or polyester coatings. Not only the chemical volatile substances are easy to exceed the standard, the process is not environmentally friendly, and the sealing coating The physical indicators such as water resistance and acid and alkali resistance of the layer are relatively poor, and the desired effect cannot be achieved.

Method used

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  • A kind of water-based paint and its preparation method and application method
  • A kind of water-based paint and its preparation method and application method

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Embodiment Construction

[0028] The content of the present invention is further described below by way of examples.

[0029] 1. Preparation of water-based polyurethane / water-based acrylate composite emulsion

[0030] In practical applications, it is advisable to choose water-based polyurethane emulsion and water-based acrylate emulsion with the same percentage of solids, so as to control the ratio of solid content. The ratio of solid content in the emulsion can be adjusted according to the application field, and further adjust the viscosity and film-forming performance of the final coating. the goal of. In this embodiment, the water-based polyurethane emulsion and the water-based acrylate emulsion with a solid content of 35% are selected, and the volume ratios are 1:1.2, 1:1.35, 1:1.4, 1:1.55, 1:1.7, 1:2.2, Mix 1:2.45, 1:2.5, 1:2.7, 1:3, stir evenly and grind until the solid particle size is less than 50μm, and then disperse in a high-speed disperser at a dispersing speed of 1500r / min for 0.5 hours. ...

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Abstract

Water-based coating is disclosed. The coating is prepared from a water-based polyurethane / water-based acrylate composite emulsion, a water-based amino resin crosslinking agent, carbon black, titanium dioxide and other auxiliary agents, wherein the water-based polyurethane / water-based acrylate composite emulsion is prepared through a physical blending process. Surfaces of plastic, leather, woodware, glass and metal materials can be brushed with the coating in a silk printing or a roller coating manner. Furthermore, the coating can be used as surface sealing coating in a silk printing process of three-dimensional patterns on decorative glass. The coating is free of volatile compounds, and is good in physical performance, good in waterproofness and good in resistance to acids and alkalis.

Description

technical field [0001] The invention relates to a water-based paint, specifically designs an environment-friendly non-organic solvent paint, a preparation method and a use method of the paint. Background technique [0002] Coatings are mainly composed of four parts: film-forming substances, pigments, volatile components and additives. The film-forming substance, also known as the base material, is the main substance that makes the paint firmly adhere to the surface of the object to be coated to form a continuous film. It is the basis of the paint and determines the basic properties of the paint. Polyurethane coating is a new type of coating developed in the 1960s. It has excellent chemical resistance, adhesion, gloss and excellent wear resistance. It is a high-grade and durable synthetic resin coating. [0003] Waterborne polyurethane coating refers to a polyurethane resin formed by dissolving or dispersing polyurethane emulsion in water, which has good weather resistance, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D133/02C09D175/04C09D7/61C09D7/63
CPCC08L2205/03C09D7/61C09D7/63C09D133/02C08L75/04C08K13/02C08K3/04C08K2003/2241
Inventor 区锦泉
Owner FOSHAN CITY GREEND CHEM
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