Water-thinned epoxy wood white primer and preparation method thereof

An epoxy woodware, water-dilutable technology, applied in the field of paint, can solve the problems of poor physical and chemical properties of the coating film, unstable coating film quality, poor yellowing resistance of PU white primer, etc., and achieve improved yellowing resistance , Excellent color fastness, excellent light stability effect

Inactive Publication Date: 2016-07-13
CHENGDU YOUPIN CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Solvent-based PU white primer has the advantages of flat paint film, strong filling power, fast drying, high hardness, easy sanding, good adhesion, and strong hiding power. However, PU white primer is a solvent-based paint. Type primers are toxic, benzene and other harmful solvents and volatile organic compounds are high in content, causing harm to users and affecting people's health. Secondly, PU white primers have poor yellowing resistance and increase in time. Affects the appearance; in recent years, with the enhancement of people's awareness of environmental protection, water-based wood paint has become more and more popular in the market due to its advantages of non-toxic environmental protection, odorless, very little volatile matter, high safety of non-flammable and non-explosive, and large paint

Method used

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  • Water-thinned epoxy wood white primer and preparation method thereof
  • Water-thinned epoxy wood white primer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0026] Example 1

[0027] Prepare the main paint: weigh 100kg according to the following mass percentages: weigh 52kg of bisphenol A epoxy resin E44, 0.3kg of polyether modified polysiloxane defoamer, and high molecular weight block containing pigment affinity groups Copolymer dispersant 0.6kg, polyether modified polydimethylsiloxane leveling agent 0.4kg, organic bentonite 1kg, rutile titanium dioxide 18kg, zinc stearate and talc mixed filler 12kg, propylene glycol methyl ether 7.7 kg, ethanol 8kg; after weighing the raw materials according to the above mass components, first fully mix the dispersant at room temperature to avoid stratification and turbidity during storage and transportation, which will affect its effect; next, bisphenol A epoxy Resin E44 and half of the mass of propylene glycol methyl ether and ethanol were put into the container and stirred and mixed uniformly, and then respectively added polyether modified polysiloxane defoamer, high molecular weight block copo...

Example Embodiment

[0030] Example 2

[0031] Prepare the main paint; weigh a total of 100 kg according to the following mass components: weigh 46 kg of bisphenol A epoxy resin E44, 0.2 kg of polyether modified polysiloxane defoamer, and high molecular weight embedded pigment with affinity groups. Segment copolymer dispersant 0.5kg, polyether modified polydimethylsiloxane leveling agent 0.3kg, organic bentonite 1.5kg, rutile titanium dioxide 15.5kg, zinc stearate and talc mixed filler 16kg, propylene glycol Methyl ether 11kg, ethanol 9kg; after weighing the raw materials according to the above mass components, first fully mix the dispersant at room temperature to avoid stratification and turbidity during storage and transportation that affect its effect; next, bisphenol A type Epoxy resin E44 and half of the mass of propylene glycol methyl ether and ethanol are put into the container and mixed evenly, then add polyether modified polysiloxane defoamer and high molecular weight block copolymer contain...

Example Embodiment

[0034] Example 3

[0035] Prepare the main paint: weigh 100kg according to the following mass percentages: Prepare the main paint: weigh 100kg according to the following mass percentages: weigh 42kg of bisphenol A epoxy resin E44, and 0.3 of polyether modified polysiloxane defoamer kg, high molecular weight block copolymer dispersant containing pigment affinity group 0.5kg, polyether modified polydimethylsiloxane leveling agent 0.4kg, organic bentonite 2kg, rutile titanium dioxide 15kg, stearic acid Zinc and talc mixed type filler 20kg, propylene glycol methyl ether 9.8kg, ethanol 10kg; after weighing the raw materials according to the above quality components, first fully mix the dispersant at room temperature to avoid stratification and turbidity during storage and transportation Affect its effect; then put the bisphenol A epoxy resin E44 and half of the mass of propylene glycol methyl ether and ethanol into the container and stir and mix evenly, and then add the polyether modi...

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Abstract

The invention discloses water-thinned epoxy wood white primer which is prepared from by main paint, a curing agent and a diluent.The main paint is prepared from, by mass, 40-55% of epoxy resin, 0.2-0.5% of a defoaming agent, 0.5-0.8% of a dispersion agent, 0.2-0.4% of a leveling agent, 1-2% of an anti-sedimentation agent, 15-20% of titanium dioxide, 10-20 parts of filler and 15-20% of a co-solvent.The curing agent is prepared from, by mass, 80% of polyamide and 20% of a modifying agent.Water is adopted as the diluent.The main paint and the curing agent exist in a solvent state, can be cured in the moist environment and have high cross-linking density.A formed coating film is relatively compact, high in hardness and good in stability.An emulsification agent is not adopted in the primer and the problem about water sensitivity of water-based paint is solved.The performance of the primer can be compared to solvent type PU white primer.Compared with PU paint, yellowing resistance can be greatly improved.The primer does not contain toxic matter and is safe and environmentally friendly.

Description

technical field [0001] The invention relates to a paint, in particular to an epoxy white primer. Background technique [0002] Solvent-based PU white primer has the advantages of flat paint film, strong filling power, fast drying, high hardness, easy sanding, good adhesion, and strong hiding power. However, PU white primer is a solvent-based paint. Type primers are toxic, benzene and other harmful solvents and volatile organic compounds are high in content, causing harm to users and affecting people's health. Secondly, PU white primers have poor yellowing resistance and increase in time. Affects the appearance; in recent years, with the enhancement of people's awareness of environmental protection, water-based wood paint has become more and more popular in the market due to its advantages of non-toxic environmental protection, odorless, very little volatile matter, high safety of non-flammable and non-explosive, and large painting area. Welcome. However, the water-based wo...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D7/12C09D7/00C09D7/02C09D7/45
CPCC08L2201/08C08L2205/025C08L2205/035C09D7/20C09D7/45C09D7/61C09D7/63C09D7/65C09D163/00C08L83/10C08K13/06C08K3/346C08K2003/2241C08K5/098C08K3/34
Inventor 陈文斌李相权
Owner CHENGDU YOUPIN CHEM CO LTD
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