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High-performance waterborne double-component epoxy resin with relatively high solid content and preparation method

A water-based two-component, solid content technology, applied in epoxy resin coatings, anti-corrosion coatings, coatings, etc., to achieve the effects of reducing VOC emissions, reducing production costs, and improving feasibility

Inactive Publication Date: 2018-08-14
SINO TRUK JINAN POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for the engine that cannot be painted as a whole after assembly, the blank must be used to spray the primer first, and then to machine and assemble

Method used

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  • High-performance waterborne double-component epoxy resin with relatively high solid content and preparation method
  • High-performance waterborne double-component epoxy resin with relatively high solid content and preparation method
  • High-performance waterborne double-component epoxy resin with relatively high solid content and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The content of each component is as follows:

[0023] 1. The composition and weight percentage of component A are:

[0024]

[0025] 2. The composition and weight percentage of component B are:

[0026]

[0027] Its preparation method is as follows:

[0028] 1) Preparation of component A: Add deionized water to WB6001 water-based epoxy emulsion, stir evenly, control the speed at 400r / min, slowly add defoamer A (dilute with an equal amount of water), dispersant A and dispersant Agent B, stir evenly, control the speed at 400r / min, then add anti-rust filler modified zinc phosphate, kaolin and ultra-fine precipitated barium sulfate, stir well, control the stirring speed at 500-600r / min, stir for 30min and grind to fineness When the temperature reaches 30um, the grinding temperature is controlled to not exceed 50°C during the grinding process. If the temperature is too high, the machine will be shut down first, and the temperature of the grinding body will be reduced...

Embodiment 2

[0033] The content of each component is as follows:

[0034] 1. The composition and weight percentage of component A are:

[0035]

[0036]

[0037] 2. The composition and weight percentage of component B are:

[0038]

[0039] The preparation method is the same as in Example 1.

[0040] Influence on product performance: The film thickness will be appropriately increased by 2-4 microns, but the original paint is easy to sink, the storage performance will be deteriorated, and the fineness will become coarser; at the same time, the salt spray will be affected by a certain amount, which will reduce 10-20%, and the chemical resistance will be reduced. Will be worse, especially water resistance will be reduced by 5-8%

Embodiment 3

[0042] The content of each component is as follows:

[0043] 1. The composition and weight percentage of component A are:

[0044]

[0045] 2. The composition and weight percentage of component B are:

[0046]

[0047] The preparation method is the same as in Example 1.

[0048] The influence of product performance: easy to sag, difficult to apply film, dryness is slowed down appropriately, surface drying will be prolonged for 5-10 minutes, gloss is high, and salt spray resistance is reduced by 5-10%.

[0049] The invention also provides a coating method of a water-based two-component epoxy coating with high performance and high construction solid content, which includes ensuring that the surface of the workpiece is oil-free and dust-free→spraying→drying. This method is easy to operate, and it is easy to apply a film by spraying. It is similar to the conventional spraying method. Because the paint film itself is matte, it can also be operated when the humidity is too h...

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PUM

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Abstract

The invention discloses high-performance waterborne double-component epoxy resin with relatively high solid content and a preparation method. The high-performance waterborne double-component epoxy resin is prepared from a component A and a component B, wherein the component A is prepared from the following components: waterborne epoxy emulsion, modified zinc phosphate, kaolin, ultrafine precipitated barium sulfate, permanent violet slurry, a dispersant A and a dispersant B, a de-foaming agent A and a de-foaming agent B, a rheological auxiliary agent A and a rheological auxiliary agent B, a flatting agent and de-ionized water; the component B is prepared from the following components: an epoxy curing agent, de-ionized water and matte slurry; the component A and the component B are mixed according to the ratio of 2.7 to 1. The product disclosed by the invention has a strong binding force with a matrix and has relatively high corrosion prevention performance; the product has a relativelygood adhesive force and certain decoration performance on a machining surface of a metal part; relatively thick coating film thickness can be formed in one step; a coating film on the product is transparent and matte; the high-performance waterborne double-component epoxy resin can be blended according to different color requirements and integrates corrosion resistance, mechanical properties and adecoration function into a whole; the production cost is reduced and the emission of VOC (Volatile Organic Compounds) is reduced.

Description

technical field [0001] The invention relates to a coating for partial coating of an engine assembly with corrosion resistance, mechanical performance and decorative performance and a preparation method, belonging to the technical field of anticorrosion coatings. Background technique [0002] The bare machined surface after the assembly of the automobile engine is used as the engine coating as the final coating after a touch-up. There are many domestic water-based engine coating products, but they cannot satisfy the adhesion to the smooth machined surface and excellent anti-corrosion at the same time. Capability and better film appearance requirements. In the manufacturing process of automobile engines, some manufacturers use water-based anti-rust agents to realize anti-rust between parts and blanks, and spray paint as a whole after assembly. However, for an engine that cannot be painted as a whole after assembly, it is necessary to use a blank to spray a primer first, and t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/08C09D7/62C09D7/61C09D7/41
Inventor 于安军沈祥梅王震修亚茹郭丹丹
Owner SINO TRUK JINAN POWER
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