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A kind of application method of wet spray wet water-based two-component coating

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

Active Publication Date: 2021-04-20
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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  • A kind of application method of wet spray wet water-based two-component coating
  • A kind of application method of wet spray wet water-based two-component coating
  • A kind of application method of wet spray wet water-based two-component coating

Examples

Experimental program
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Effect test

Embodiment 1

[0042] like Figure 1-Figure 3 As shown, the use method of a kind of wet spray wet water-based two-component paint of the present embodiment is carried out according to the following steps:

[0043] Step 1. Evenly mix the primer with the general water-based curing agent and deionized water at a ratio of 4:1:1;

[0044] Step 2: Evenly mix the topcoat with the general-purpose water-based curing agent and deionized water at a ratio of 3:1:1;

[0045] Step 3. Spray the prepared primer on the surface of the workpiece, and level it at room temperature for 1min;

[0046] Step 4: Spray the prepared topcoat on the primer layer, and 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, and the general water-based curing agent used is a water-based isocyanate curing agent, which specifically includes the following raw materials by we...

Embodiment 2

[0063] A method of using a wet-spray-wet water-based two-component paint of this embodiment, the primer is used together with the topcoat, specifically, the primer, the general-purpose water-based curing agent and deionized water are evenly prepared at 3:2:1; The topcoat, the general-purpose water-based curing agent and deionized water are evenly blended at a ratio of 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] The general water-based curing agent used is a water-based isocyanate curing agent, which specifically includes the following raw materials by weight: 40 parts of hydrophilic modified aliphatic polyisocyanate based on IPDI; 40 parts of hydrophilic modified aliphatic polyisocya...

Embodiment 3

[0078] A method of using a wet-spray-wet water-based two-component paint of this embodiment, the primer is used together with the topcoat, specifically, the primer, the general-purpose water-based curing agent and deionized water are evenly prepared at a ratio of 5:2:1; The topcoat, the general-purpose water-based curing agent and deionized water are evenly blended at a ratio of 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] The general water-based curing agent used is a water-based isocyanate curing agent, which specifically includes the following raw materials by weight: 50 parts of hydrophilic modified aliphatic polyisocyanate based on IPDI; 50 parts of hydrophilic modified aliphatic...

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Abstract

The invention discloses a method for using a wet-sprayed wet water-based two-component paint, which belongs to the field of paint preparation. The present invention is carried out according to the following steps: Step 1, uniformly deploy the primer, the universal water-based curing agent and deionized water according to (3-5): (1-2): 1; Step 2, mix the topcoat with the universal water-based curing agent and deionized water according to (2‑4): (1‑2): 1; step 3, spray the prepared primer on the surface of the workpiece, and level it at room temperature for 1‑3min; step 4, apply the prepared surface The paint is sprayed on the primer layer, and the two coats are leveled and dried at room temperature for 20-30 minutes; then cured and baked at 80±5°C for 25-35 minutes to form a paint film coating system. The invention overcomes the disadvantages of difficult wet spraying and low production efficiency of water-based coatings in the prior art, can effectively realize the wet spraying process, thereby improving production efficiency and reducing production energy consumption, and can be widely used in the coating field.

Description

technical field [0001] The invention relates to the technical field of paint preparation, and more particularly, to a method for using a wet-spray-wet-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-dilutable coatings, and water-dispersible coatings (latex coatings). With the strict requirements of the current national environmental protection policy, low VOC and low energy consumption The water-based low-temperature coating products emerged as the times require, gradually replacing traditional solvent-based coatings. They are equivalent to solvent-based coatings in many aspects such as ordinary workability, gloss and flow. Solvent-based coatings can easily achieve wet spraying through process and formula design. The coating and baking process of two coating and one baking greatly reduces the production energy consum...

Claims

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Application Information

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Patent Type & Authority Patents(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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