Water-based double-component thick-coating ultralow-VOC high-solid clear primer and preparation method thereof

A two-component, high-solid technology, applied in the field of paint, can solve the problems that can not meet the high decorative furniture coating requirements, low solid content of water-based transparent primer, easy to appear dark bubbles, pinholes, heat rash, etc., to achieve the elimination of drums Prevents color bleeding, solves water sensitivity problems, improves transparency and fullness

Inactive Publication Date: 2021-07-23
安徽名士达新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Water-based wood coatings are more and more popular in the market because they use water as a solvent and have the advantages of health and environmental protection. However, due to the low solid content of water-based transparent primers and poor filling properties, thick coatings are prone to bubble problems, especially water-based double primers. The component polyurethane transparent primer is prone to defects such as dark bubbles, pinholes, and prickly heat during the drying process. It has to be coated multiple times to meet the requirements. Not only the construction period is long, the coating production efficiency is low, and the coating is easy The collapse will seriously affect the coating effect, and it cannot meet the increasingly stringent requirements of users for high efficiency and high quality of coating, nor can it meet the coating requirements of high-decorated furniture. The application of water-based transparent primer in the field of furniture coating

Method used

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  • Water-based double-component thick-coating ultralow-VOC high-solid clear primer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Prepare the main paint; weigh 100kg according to the following mass percentages: 56kg liquid epoxy resin, 0.4kg dispersant, 1kg anti-sedimentation agent, 0.2kg defoamer, 0.2kg wetting and leveling agent, 25kg filler, 10kg reactive diluent , co-solvent 7.2kg; put liquid epoxy resin, reactive diluent and part of co-solvent into the container, disperse at 600-800 rpm for 5 minutes; then disperse at 600-800 rpm while adding dispersion Agent, anti-settling agent and filler, disperse at 1200-1500 rpm for 20 minutes until the fineness is acceptable; add the remaining co-solvent and additives and disperse at 600-800 rpm for 10 minutes to obtain the main paint component.

[0028] Coating: Mix the above main paint and curing agent thoroughly, then add water, mix according to the mass ratio of main paint: curing agent: water = 1:0.4:0.5~1; after mixing evenly, spray or brush On the wood surface, dry naturally or bake at low temperature, and the effective period of construction is ...

Embodiment 2

[0030] Prepare the main paint; weigh 100kg according to the following mass percentages: 63kg liquid epoxy resin, 0.3kg dispersant, 0.8kg anti-settling agent, 0.3kg defoamer, 0.3kg wetting and leveling agent, 20kg filler, reactive diluent 11kg, co-solvent 4.3kg; put liquid epoxy resin, reactive diluent and part of co-solvent into the container, disperse at 600-800 rpm for 5 minutes; then add while dispersing at 600-800 rpm Dispersant, anti-sedimentation agent and filler, disperse at 1200-1500 rpm for 20 minutes until the fineness is acceptable; add the remaining co-solvent and additives and disperse at 600-800 rpm for 10 minutes to obtain the main paint component .

[0031] Coating: Mix the above main paint and curing agent thoroughly, then add water, and mix according to the mass ratio of main paint: curing agent: water = 1:0.4:0.5~1; after mixing evenly, spray or brush Apply on the surface of woodware, dry naturally or bake at low temperature, and the effective period of con...

Embodiment 3

[0033] Prepare the main paint; weigh 100kg according to the following mass percentages: 70kg liquid epoxy resin, 0.2kg dispersant, 0.5kg anti-sedimentation agent, 0.3kg defoamer, 0.4kg wetting and leveling agent, 15kg filler, reactive diluent 10kg, co-solvent 3.6kg; put liquid epoxy resin, reactive diluent and part of co-solvent into the container, disperse at 600-800 rpm for 5 minutes; then add while dispersing at 600-800 rpm Dispersant, anti-sedimentation agent and filler, disperse at 1200-1500 rpm for 20 minutes until the fineness is acceptable; add the remaining co-solvent and additives and disperse at 600-800 rpm for 10 minutes to obtain the main paint component .

[0034]Coating: Mix the above main paint and curing agent thoroughly, then add water, and mix according to the mass ratio of main paint: curing agent: water = 1:0.4:0.5~1; after mixing evenly, spray or brush Apply on the surface of woodware, dry naturally or bake at low temperature, and the effective period of...

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Abstract

The invention discloses a water-based double-component thick-coating ultra-low VOC high-solid clear primer capable and a preparation method thereof, the water-based double-component thick-coating ultra-low VOC high-solid clear primer comprises main paint and a curing agent, the main paint comprises the following components in percentage by mass: 55-70% of liquid epoxy resin, 0.2-0.4% of a dispersing agent, 0.5-1% of an anti-settling agent, 0.2-0.4% of a defoaming agent, 0.2-0.4% of a wetting leveling agent, 15-25% of filler, 8-12% of a reactive diluent and 3-8% of a cosolvent; the high-solid clear primer is high in solid content, very high in crosslinking density, relatively compact and smooth in formed film, high in hardness, excellent in transparency and filling property and excellent in sinking resistance, particularly has the advantage of no blistering in thick coating, can reduce the coating times of the primer, obviously reduces VOC emission in the coating process, and saves the coating labor cost, and thus the working efficiency of furniture enterprises is greatly improved.

Description

technical field [0001] The invention relates to a paint, in particular to a water-based two-component thick coatable ultra-low VOC high-solid clear primer and a preparation method thereof. Background technique [0002] Water-based wood coatings are more and more popular in the market because they use water as a solvent and have the advantages of health and environmental protection. However, due to the low solid content of water-based transparent primers and poor filling properties, thick coatings are prone to bubble problems, especially water-based double primers. The component polyurethane transparent primer is prone to defects such as dark bubbles, pinholes, and prickly heat during the drying process. It has to be coated multiple times to meet the requirements. Not only the construction period is long, the coating production efficiency is low, and the coating is easy The collapse will seriously affect the coating effect, and it cannot meet the increasingly stringent requir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/00C09D7/65C09D7/20C08G59/44
CPCC08G59/44C08L2201/10C09D5/002C09D163/00C09D7/20C09D7/65C08L77/00C08K9/04C08K3/346C08K3/34C08K5/098
Inventor 李相权
Owner 安徽名士达新材料有限公司
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