Mono-component aqueous epoxy emulsion used for priming paint and preparation method thereof

A water-based epoxy emulsion, one-component technology, applied in the direction of coating, can solve the problems of reducing the performance of the emulsion, troublesome construction process, single large particle size or small particle size, etc., to improve the sealing and permeability. , the effect of improving mechanical properties and improving adhesion

Inactive Publication Date: 2015-06-17
佛山市顺德区巴德富实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the two-component epoxy resin needs to be prepared in addition to the ratio of the two components during construction, and the two components must be fully mixed, the construction process is relatively troublesome.
In the environment with poor construction conditions, because of the low temperature of the curing reaction, the components react when they are mixed, resulting in the incomplete mixing of the two components and reducing the performance of the emulsion.
In addition, the traditional two-component epoxy emulsion undergoes a solidification reaction at room temperature, and its particle size distribution range is narrow, and all belong to a single large or small particle size, so the penetration and sealing capabilities of the emulsion are limited. The overall performance is poor, and the two cannot be combined

Method used

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  • Mono-component aqueous epoxy emulsion used for priming paint and preparation method thereof

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[0029] The preparation method of one-component water-based epoxy emulsion for primer of the present invention may further comprise the steps:

[0030] a: Weigh the raw materials according to the above ratio for later use;

[0031] b: Add epoxy resin monomer and diluent to a four-necked flask with a thermometer, reflux condenser and stirring device at normal temperature and pressure, and keep stirring the mixture for 10-30 minutes;

[0032] c: Raise the temperature of the flask to 70-90°C and keep it warm for 0.5-1.5 hours;

[0033] d: Put the radical polymerization initiator, styrene monomer, butyl acrylate monomer, acrylic acid monomer and methacrylic acid monomer in a mixer, and stir for 10-20 minutes at normal temperature and pressure;

[0034] e: Add the mixture obtained in step d to the flask in step c, dropwise for 1-3 hours, and keep the temperature of the mixture at 70-90°C, keep stirring during the dropping process, and keep warm for 1-2 hours after the dropping is c...

Embodiment 1

[0041] One-component aqueous epoxy emulsion for primer of the present invention comprises water, E-20 epoxy resin, E-44 epoxy resin, styrene monomer, acrylic acid monomer, butyl acrylate monomer, methacrylic acid monomer , ethylene glycol butyl ether, N-N dimethylethanolamine and dibenzoyl peroxide, the contents of the above components are calculated in parts by mass: water: 100 parts; E-20 epoxy resin: 15 parts; E-44 Epoxy resin: 5 parts; Styrene monomer: 10 parts; Acrylic monomer: 1 part; Butyl acrylate monomer: 10 parts; Methacrylic monomer: 1 part; Ethylene glycol butyl ether: 10 parts; N-N Dimethylethanolamine: 10 parts; Dibenzoyl peroxide: 1 part.

[0042] The preparation method of one-component water-based epoxy emulsion for primer of the present invention may further comprise the steps:

[0043] a: Weigh the raw materials according to the above ratio for later use;

[0044] b: Add E-20 epoxy resin, E-44 epoxy resin and ethylene glycol butyl ether into a four-necked f...

Embodiment 2

[0053] One-component aqueous epoxy emulsion for primer of the present invention comprises water, E-20 epoxy resin, E-44 epoxy resin, styrene monomer, acrylic acid monomer, butyl acrylate monomer, methacrylic acid monomer , ethylene glycol butyl ether, n-butanol, N-N dimethylethanolamine and dibenzoyl peroxide, the contents of the above components are calculated in parts by mass: water: 100 parts; E-20 epoxy resin: 18 parts ; E-44 epoxy resin: 6 parts; styrene monomer: 13 parts; acrylic monomer: 3 parts; butyl acrylate monomer: 15 parts; methacrylic acid monomer: 4 parts; 11 parts; n-butanol: 3 parts; N-N dimethylethanolamine: 14 parts; dibenzoyl peroxide: 3 parts.

[0054] The preparation method of one-component water-based epoxy emulsion for primer of the present invention may further comprise the steps:

[0055] a: Weigh the raw materials according to the above ratio for later use;

[0056] b: Add E-20 epoxy resin, E-44 epoxy resin, ethylene glycol butyl ether and n-butano...

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Abstract

The invention relates to a mono-component aqueous epoxy emulsion used for a priming paint and a preparation method thereof. The mono-component aqueous epoxy emulsion used for the priming paint comprises 100 parts of water, 20-40 parts of epoxy resin monomer, 10-20 parts of styrene monomer, 1-10 parts of acrylic acid monomer, 10-30 parts of butyl acrylate monomer monomer, 1-10 parts of methacrylic acid monomer, 10-30 parts of diluents, 10-20 parts of neutralizer and 1-10 parts of free radical polymerization initiator. The epoxy resin monomer has strong cohesive force, a molecular structure is compact, mechanical properties of a reaction system is increased, and massive reactive groups with strong polarity are existed in a mixing system of the styrene monomer, the acrylic acid monomer, the butyl acrylate monomer monomer, and the methacrylic acid monomer, so that adherence capability of epoxy resin cure system to the material is greatly increased.

Description

technical field [0001] The invention relates to a water-based epoxy emulsion and a preparation method thereof, in particular to a one-component water-based epoxy emulsion for a primer and a preparation method thereof. Background technique [0002] Epoxy resin is a widely used film-forming substance for architectural coatings, especially water-based epoxy emulsion, which is popular among architectural coatings for its strong fire resistance, strong adhesion, low shrinkage, and strong chemical resistance. Manufacturers of all ages. The current water-based epoxy emulsion usually has two kinds of one-component and two-component. The one-component water-based epoxy emulsion is to add a curing agent and a catalyst to the epoxy resin, and a curing film-forming reaction occurs under certain reaction conditions; The two-component epoxy emulsion is to set the epoxy resin and curing agent separately, and then mix them when using. Because the two-component epoxy emulsion has the cha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/10C08F220/18C08F212/08C08F220/06C09D151/08
Inventor 余勇杨文涛
Owner 佛山市顺德区巴德富实业有限公司
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