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A low voc heat and humidity resistant zinc-containing construction machinery water paint

A technology of construction machinery and heat resistance, applied in the field of coatings and water-based coatings, it can solve problems such as poor adhesion and performance gap, and achieve the effects of good environmental protection, reduced coating costs, and low content of toxic and harmful substances.

Active Publication Date: 2019-07-26
HEBEI CHENYANG INDAL & TRADE GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, most construction machinery coatings still use solvent-based spray (or immersion) paints. The domestic water-based coatings used for construction machinery are less than 5%. There is a certain gap between the international advanced level
Traditional zinc-rich primers have poor adhesion when substrates are treated with slight oil stains
And the traditional zinc-rich primer needs to be coated with intermediate coating. When the salt spray requires more than 1000h, there is no product free of intermediate coating

Method used

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  • A low voc heat and humidity resistant zinc-containing construction machinery water paint

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A low-VOC heat-and-humidity resistant zinc-containing engineering machinery water paint, which is composed of components A, B and C in a weight ratio of 5:1:1, and the components A, B and Made by mixing components C.

[0033] Among them, component A is calculated by weight percentage (%), and is prepared by mixing the following components:

[0034] Deionized water 21.4%

[0035] Environmentally friendly solvent 2%

[0036] Neutralizer 0.2%

[0037] Wetting agent 0.4%

[0038] Dispersant 1.5%

[0039] Defoamer 0.2%

[0040] Leveling agent 0.6%

[0041] Carbon black 0.2%

[0042] Titanium dioxide 5%

[0043] Fumed silica 0.5%

[0044] Shielding filler 15%

[0045] Water-based epoxy resin 50%

[0046] Anti-flash rust agent 2%

[0047] Thickener 1%.

[0048] Among them, component B is calculated by weight percentage (%), and is prepared by mixing the following components:

[0049] Water-based curing agent 38%

[0050] Environmentally friendly solvent 2%

[0...

Embodiment 2

[0058] A low-VOC heat-and-humidity resistant zinc-containing engineering machinery water paint, which is different from Example 1 in that component A is prepared by mixing the following components in terms of weight percentage (%):

[0059] Deionized water 22.8%

[0060] Environmental solvent 1.5%

[0061] Neutralizer 0.2%

[0062] Wetting agent 0.3%

[0063] Dispersant 1.2%

[0064] Defoamer 0.2%

[0065] Leveling agent 0.5%

[0066] Carbon black 0.2%

[0067] Titanium dioxide 8%

[0068] Fumed silica 0.8%

[0069] Shielding filler 12%

[0070] Waterborne epoxy resin 48%

[0071] Anti-flash rust agent 3%

[0072] Thickener 1.3%.

[0073] Among them, component B is calculated by weight percentage (%), and is prepared by mixing the following components:

[0074] Water-based curing agent 36%

[0075] Environmental solvent 1.5%

[0076] Deionized water 62%.

Embodiment 3

[0078] A low-VOC heat-and-humidity resistant zinc-containing engineering machinery water paint, which is different from Example 1 in that component A is prepared by mixing the following components in terms of weight percentage (%):

[0079] Deionized water 24.6%

[0080] Environmentally friendly solvent 1%

[0081] Neutralizer 0.1%

[0082] Wetting agent 0.2%

[0083] Dispersant 1%

[0084] Defoamer 0.1%

[0085] Leveling agent 0.4%

[0086] Carbon black 0.1%

[0087] Titanium dioxide 10%

[0088] Fumed silica 1%

[0089] Shielding filler 10%

[0090] Waterborne epoxy resin 45%

[0091] Anti-flash rust agent 5%

[0092] Thickener 1.5%.

[0093] Among them, component B is calculated by weight percentage (%), and is prepared by mixing the following components:

[0094] Water-based curing agent 35%

[0095] Environmentally friendly solvent 1%

[0096] Deionized water 64%.

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Abstract

The present invention relates to the technical field of coatings, in particular to the technical field of water-based coatings, and specifically discloses a low-VOC moisture-heat-resistant zinc-containing water-based paint for engineering machinery. By selecting two water-based epoxy resins with different epoxy values ​​and different reaction speeds and two Mixing water-based epoxy curing agents with different active hydrogen equivalents, and adding flaky zinc powder and shielding fillers, the prepared water-based paint is a zinc-rich primer, which has good ease of construction and good adhesion of the paint film. It has excellent physical and chemical properties, low VOC content, safety and environmental protection, can be used without intermediate coating, and reduces the construction process of construction machinery coating.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to the technical field of water-based coatings. Background technique [0002] At present, most construction machinery coatings still use solvent-based spray (or immersion) paints. The domestic water-based coatings used for construction machinery are less than 5%. There is a certain gap between the international advanced level. [0003] Solvent-based paints for construction machinery have problems such as high VOC (volatile organic compound) content, serious pollution and fire hazards. The VOC of existing water-based paint products is still high, and the product’s resistance to heat and humidity and salt spray is inferior to that of solvent-based paints. Production, and in order to improve anti-corrosion performance, it is often necessary to add some anti-rust pigments with heavy metals, which reduces environmental protection and safety, and cannot meet export standards. [0004]...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/00C09D5/10C09D7/61C09D7/20
CPCC09D5/106C09D7/20C09D7/61C09D163/00C08L63/00C08K13/04C08K7/00C08K2003/0893C08K3/04C08K2003/2241C08K3/36C08K3/34C08K2003/327
Inventor 董立志商培周泽钱胡中源
Owner HEBEI CHENYANG INDAL & TRADE GROUP CO LTD
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