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Water-based adhesive primer and preparation method thereof

A water-based bonding and primer technology, used in primers, coatings, anti-corrosion coatings, etc., can solve problems such as non-compliance with environmental protection requirements, large amount of thinner, and large pollution, reducing labor construction costs and achieving excellent wet adhesion. The effect of focus and salt spray resistance is good

Inactive Publication Date: 2020-02-14
德爱威建设工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Disadvantages: heavy pollution, does not meet environmental protection requirements
Disadvantages: higher price
[0006] CN105713483A discloses a multifunctional epoxy universal primer and a preparation method thereof, comprising A component and B component, the weight ratio of A component and B component is: 100:20; A component includes: epoxy resin 20-50%, ordinary pigment 15-30%, antirust pigment 5-25%, filler 5-25%, leveling agent 0.2-2%, thixotropic agent 0.2-1.5%, defoamer 0.2-1%, Other additives 0.5-1%, solvent 10-20%, B component includes: epoxy curing agent 30-60%, epoxy resin curing accelerator 2-5%, solvent 40-60%; said other additives Including dispersant, wetting agent, adding appropriate amount of diluent to adjust to the applicable viscosity, the invention has fast drying speed, good adhesion, and good anti-corrosion performance, but the above-mentioned coating has the problems of large amount of diluent and serious pollution, which does not meet environmental protection requirements

Method used

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  • Water-based adhesive primer and preparation method thereof
  • Water-based adhesive primer and preparation method thereof
  • Water-based adhesive primer and preparation method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0067] The preparation method of water-based adhesive primer includes the following steps:

[0068] 1) Mix the first part of water, dispersant, and bactericide evenly, then add hydrophilic bentonite and mix evenly to obtain bentonite slurry, which is a viscous jelly-like liquid;

[0069] In step 1), control the mixing speed to 800rpm and the time to 35min;

[0070] 2) The bentonite slurry obtained in step 1) is evenly mixed with the second part of water, wetting and dispersing agent, and the first part of defoaming agent, adding titanium dioxide, anti-rust pigment, fumed silica and mica powder, grinding and dispersing to particle size Is 30μm to obtain filler slurry;

[0071] 3) Mix the filler slurry with the water-based modified epoxy emulsion for 10 minutes, and control the system speed to 600 rpm, and then add film-forming additives, rheological additives, anti-flash rust agents, substrate wetting agents, and the second part to the system Antifoaming agent, reduce the system speed...

Embodiment 8

[0074] The difference from the above step is that in step 2), the dispersion is ground to a fineness of 40 μm.

Embodiment 9

[0076] The difference from the above step is that in step 2), the dispersion and grinding are performed to a fineness of 50 μm.

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Abstract

The invention discloses a water-based adhesive primer and a preparation method thereof. The water-based adhesive primer comprises a component A and a component B, wherein the component A is prepared from a water-based modified epoxy emulsion, a color filler, mica powder, an anti-rust pigment, a coalescing agent, an auxiliary agent and water; and the component B comprises a waterborne epoxy curingagent. Compared with the prior art, the water-based adhesive primer disclosed by the invention has an activation period equivalent to that of oil-based primer, is good in salt spray resistance and isenvironment-friendly; and the existing production and engineering construction rhythm of customers is not influenced; the preparation method provided by the invention is simple in process, manual construction cost of customers is reduced greatly, and the preparation method is suitable for industrial mass production.

Description

Technical field [0001] The invention belongs to the field of metal primers, and more specifically, relates to a water-based bonding primer and a preparation method thereof. Background technique [0002] Water-based bonding primer can be used between carbon steel, stainless steel or magnesium-aluminum alloy substrate (or original coating) and the upper coating (including but not limited to self-adhesive waterproof layer, heat insulation reflective coating, heat preservation layer), It can provide good interlayer adhesion between the substrate (or the original coating) and the upper coating, and when the upper coating or outer package is damaged, water invades the water-based bonding primer layer, metal layer, and thermal insulation layer. , Which can ensure that the coating does not fall off, and can slow down local or large-area rust and blistering of the substrate within a certain period of time. [0003] At present, there are mainly the following two solutions: (1) Oily epoxy pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/08C09D7/61
CPCC08K2003/2241C08K2003/327C08K2003/328C08L2205/025C09D5/002C09D5/084C09D163/00C09D7/61C08L63/00C08K13/02C08K3/32C08K3/22C08K3/36C08K3/34
Inventor 冯小仲吕晓奇王海青车海彬王燕
Owner 德爱威建设工程有限公司
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