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Using method of wet-on-wet water-based double-component coating

A water-based two-component, coating technology, applied in antifouling/underwater coatings, polyurea/polyurethane coatings, devices for coating liquids on surfaces, etc., can solve the problems of difficulty in wet spraying and low production efficiency, etc. To achieve the effect of reducing excessive time, improving production efficiency and reducing production costs

Active Publication Date: 2019-01-08
WUHU CHUNFENG NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the disadvantages of wet spraying and low production efficiency of water-based coatings in the prior art, and provides a method for using wet-spraying water-based two-component coatings, which can effectively realize the wet spraying process, thereby Improve production efficiency, reduce production energy consumption, and can be widely used in the field of coating, especially in the field of low-temperature coating involving body and related requirements of two-layer coating and one-baking.

Method used

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  • Using method of wet-on-wet water-based double-component coating
  • Using method of wet-on-wet water-based double-component coating

Examples

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Effect test

Embodiment 1

[0042] Such as Figure 1-Figure 3 Shown, the using method of a kind of wet spray wet waterborne two-component coating of the present embodiment, carry out according to the following steps:

[0043] Step 1. Evenly mix the primer with general water-based curing agent and deionized water according to 4:1:1;

[0044] Step 2. Evenly mix the topcoat with the universal water-based curing agent and deionized water according to the ratio of 3:1:1;

[0045] Step 3. Spray the prepared primer on the surface of the workpiece, leveling at room temperature for 1 minute;

[0046] Step 4: Spray the prepared topcoat on the primer layer, level and dry the two coats at room temperature for 20 minutes; then cure and bake at 75°C for 25 minutes to form a paint film coating system.

[0047] Wherein step 1 and step 2 have no sequence requirements, the general water-based curing agent used is a water-based isocyanate curing agent, specifically including the following raw materials in parts by weight: ...

Embodiment 2

[0063] A method for using a wet-sprayed wet water-based two-component coating in this embodiment, the primer and the topcoat are used together, specifically, the primer is evenly prepared with a general-purpose water-based curing agent and deionized water according to 3: 2: 1; The topcoat, general water-based curing agent and deionized water are evenly prepared according to 2:1:1, and the prepared primer is sprayed on the surface of the workpiece. After leveling at room temperature for 3 minutes, the prepared topcoat is sprayed on the primer layer. The two coatings were leveled and dried at room temperature for 30 minutes; then cured and baked at 85°C for 35 minutes to form a paint film coating system.

[0064] Wherein the general water-based curing agent used is a water-based isocyanate curing agent, specifically comprising the following raw materials in parts by weight: 40 parts based on IPDI hydrophilic modified aliphatic polyisocyanate; 40 parts based on HDI hydrophilic mod...

Embodiment 3

[0078] A method for using a wet-sprayed wet water-based two-component coating in this embodiment, the primer and the topcoat are used together, specifically, the primer is evenly prepared with a general-purpose water-based curing agent and deionized water according to 5: 2: 1; The topcoat, general water-based curing agent and deionized water are evenly prepared according to 4:2:1, and the prepared primer is sprayed on the surface of the workpiece. After leveling at room temperature for 2 minutes, the prepared topcoat is sprayed on the primer layer. The two coatings were leveled and dried at room temperature for 25 minutes; then cured and baked at 80°C for 30 minutes to form a paint film coating system.

[0079] Wherein the general water-based curing agent used is a water-based isocyanate curing agent, specifically including the following raw materials in parts by weight: 50 parts based on IPDI hydrophilic modified aliphatic polyisocyanate; 50 parts based on HDI hydrophilic modi...

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Abstract

The invention discloses a using method of a wet-on-wet water-based double-component coating, and belongs to the field of coating preparation. The method comprises the following steps that 1, priming paint and universal water-based curing agent and deionized water are uniformly mixed according to the ratio of (3-5):(1-2):1; 2, finish paint and the universal water-based curing agent and the deionized water are uniformly mixed according to a ratio of (2-4):(1-2):1; 3, the mixed priming paint is sprayed on the surface of a workpiece, and the normal-temperature leveling is carried out for 1-3 min;and 4, the mixed finish paint is sprayed on the priming layer, the two coatings are subjected to normal-temperature leveling and drying for 20-30 min, then curing and baking are carried out at the temperature of 80 + / - 5 DEG C for 25-35 minutes, and a paint film coating system is formed. According to the using method, the defects that in the prior art, the wet-on-wet is difficult to carry out forthe water-based coating and the production efficiency is low are overcome, the wet-on-wet process can be effectively realized, so that the production efficiency is improved, the production energy consumption is reduced, and the method can be widely applied to the field of coating.

Description

technical field [0001] The invention relates to the technical field of paint preparation, more specifically, relates to a method for using a wet-sprayed water-based two-component paint. Background technique [0002] Water-based coatings refer to coatings that use water as a solvent or as a dispersion medium. They are divided into water-soluble coatings, water-diluted coatings, water-dispersible coatings (latex coatings), etc. With the strict requirements of the current national environmental protection policy, low VOC and low energy consumption Water-based low-temperature coating products emerged as the times require, and gradually replace traditional solvent-based coatings. They are comparable to solvent-based coatings in general construction and gloss leveling. Solvent-based coatings can easily achieve wet spraying through process and formula design. The coating and baking process of two coatings and one baking greatly reduces production energy consumption. However, in th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D7/24B05D7/00C09D175/04C09D7/61C09D7/63C09D5/14
CPCB05D7/24B05D7/542B05D2451/00B05D2503/00B05D2601/22B05D2601/24B05D2602/00C08K2003/2241C09D5/002C09D5/14C09D175/04C09D7/61C09D7/63B05D2401/20B05D2420/01B05D2420/02C08K3/22C08K3/36C08K5/103
Inventor 殷骏郭小平
Owner WUHU CHUNFENG NEW MATERIAL
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