High-performance water-based epoxy resin automobile paint and preparation method thereof

A water-based epoxy resin and epoxy resin technology, used in epoxy resin coatings, anti-corrosion coatings, coatings, etc., can solve the problems of large dispersed phase size and poor stability, and achieve low cost, good stability, and adhesion. high effect

Inactive Publication Date: 2016-08-24
HUBEI JIAJI SYNTHESIS MATERIALS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the emulsion prepared by the phase inversion method is affected by the addition

Method used

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  • High-performance water-based epoxy resin automobile paint and preparation method thereof
  • High-performance water-based epoxy resin automobile paint and preparation method thereof
  • High-performance water-based epoxy resin automobile paint and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0031] Example 1

[0032] The preparation method of the high-performance water-based epoxy resin automobile coating of the present invention includes the following steps:

[0033] a. Preparation of emulsifier X

[0034] Add 10 parts by weight of epoxy resin E20 and 50 parts of polyol PEG6000 into a four-necked flask equipped with a stirrer, condenser and thermometer. After heating up to the two completely melted, add the catalyst boron trifluoride dropwise 0.5 part of ether complex, react at 100°C for 3h, add 60 parts of deionized water to obtain light yellow transparent epoxy resin emulsifier X;

[0035] b. Preparation of component A

[0036] Add 3 parts by weight of emulsifier X (prepared in step a) and 3 parts of cosolvent propylene glycol methyl ether into 60 parts of epoxy resin E20. The temperature of the system is controlled at 50°C, and after rapid stirring for 50 minutes, add dropwise Ionized water until the viscosity of the system suddenly decreases and a uniform emulsion is...

Example Embodiment

[0041] Example 2

[0042] The preparation method of the high-performance waterborne epoxy resin automobile coating of the present invention includes the following steps:

[0043] a. Preparation of emulsifier X

[0044] Add 10 parts by weight of epoxy resin E44 and 50 parts of polyol PEG4000 into a four-necked flask equipped with a stirrer, condenser and thermometer. After heating up to the two completely melted, add the catalyst dilauric acid dropwise. 1 part of butyl tin, react at 80°C for 4 hours, add 60 parts of deionized water to obtain light yellow transparent epoxy resin emulsifier X;

[0045] b. Preparation of component A

[0046] Add 3 parts by weight of emulsifier X (prepared in step a) and 4 parts of cosolvent ethylene glycol butyl ether into 60 parts of epoxy resin E44. The temperature of the system is controlled at 50°C, and after rapid stirring for 40 minutes, dropwise Add deionized water until the viscosity of the system suddenly decreases and a uniform emulsion is forme...

Example Embodiment

[0051] Example 3

[0052] The preparation method of the high-performance water-based epoxy resin automobile coating of the present invention includes the following steps:

[0053] a. Preparation of emulsifier X

[0054] Add 10 parts by weight of epoxy resin E51 and 50 parts of polyol PPG3000 into a four-necked flask equipped with a stirrer, condenser and thermometer. After heating up to the two completely melted, add the catalyst triphenylphosphine dropwise 0.8 part, react at 90°C for 5h, add 60 parts of deionized water to obtain light yellow transparent epoxy resin emulsifier X;

[0055] b. Preparation of component A

[0056] Add 3 parts by weight of emulsifier X (prepared in step a) and 2 parts of co-solvent diethylene glycol monomethyl ether into 60 parts of epoxy resin E51. The temperature of the system is controlled at 60°C, and after rapid stirring for 30 minutes, Add deionized water dropwise until the viscosity of the system suddenly decreases and a uniform emulsion is formed, ...

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Abstract

The invention discloses a high-performance water-based epoxy resin automobile paint and a preparation method thereof. The automobile paint comprises the following components in parts by weight: 30-60 parts of component A and 30-90 parts of component B. The component A comprises 30-60 parts of epoxy resin M, 1-10 parts of emulsifier X, 1-10 parts of cosolvent and 30-60 parts of deionized water. The component B comprises 0-30 parts of pigment, 10-30 parts of amine curing agent, 30-60 parts of deionized water, 0.1-3 parts of organosilicon leveling agent, 0.1-3 parts of polylol wetting agent, 1-5 parts of dispersing agent, 0.1-2 parts of preservative, 0.5-2 parts of emulsifier Y, 0.2-2 parts of pH regulator and 0.2-2 parts of defoaming agent. The whole paint uses water as the medium and only needs a small amount of cosolvent, so the VOC (volatile organic compound) content is greatly lowered, and the environmental pollution is small. The phase-reversal method used for preparing the water-based epoxy resin emulsion directly adopts mechanical dispersion without chemical reaction, and thus, has the advantages of simple equipment and low cost.

Description

technical field [0001] The invention relates to the field of chemical materials, in particular to a high-performance water-based epoxy resin automotive coating and a preparation method thereof. Background technique [0002] Due to its high chemical stability, corrosion resistance, good adhesion and mechanical properties, epoxy resin is widely used in construction, shipbuilding, automobiles, aerospace, machinery manufacturing, chemical building materials and other fields, especially in coatings It is more widely used in the industrial field. However, most epoxy coatings are solvent-based at present. With the development of society and the improvement of environmental protection awareness, people's requirements for chemical products are becoming more and more stringent. The coating industry is developing in the direction of high efficiency, energy saving, and ecology. [0003] The automobile industry is one of the four pillar industries in my country, and the demand for autom...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D5/08C09D7/12C09D7/00
CPCC09D163/00C08L2205/025C08L2205/035C09D5/08C09D7/20C09D7/65C08L63/00C08L71/02
Inventor 张智力管蓉潘恒张探鲁德平叶红
Owner HUBEI JIAJI SYNTHESIS MATERIALS CO LTD
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