Water-based auxiliary material capable of improving application properties of water-based metal and pearl finish and preparation method of water-based auxiliary material

A constructable and water-based technology, applied in latex paints, coatings, etc., can solve the problems of rough surface, inability to achieve spray uniformity, local accumulation, etc., to achieve smooth and smooth surface, excellent board effect, and maintain board effect. Effect

Active Publication Date: 2018-06-22
GUANGDONG YATU CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, ordinary water-based metallic paints mainly use pearlescent powder as a filler and a large amount of emulsion as a binder. Since the pearlescent powder is in the form of flakes, the specific gravity is about 0.9mg/kl, and the surface tension is relatively high, the pearlescent powder is often suspended on the surface of the emulsion. Cause local accumulation, serious color difference will appear after drying
In addition, the pearlescent powder has a sheet-like structure. After electro-transfer coloring treatment, there will be electrostatic interaction between the sheets, which will be transmitted through water and emulsion carriers. The problem of same-sex repulsion occurs, among which, one end of some pearles

Method used

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  • Water-based auxiliary material capable of improving application properties of water-based metal and pearl finish and preparation method of water-based auxiliary material
  • Water-based auxiliary material capable of improving application properties of water-based metal and pearl finish and preparation method of water-based auxiliary material
  • Water-based auxiliary material capable of improving application properties of water-based metal and pearl finish and preparation method of water-based auxiliary material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1 2

[0054] Embodiment 1 preparation of dimer acid modified organobentonite

[0055] (1) According to the ratio of sodium bentonite: calcium bentonite weight ratio of 5:1, take sodium bentonite and calcium bentonite respectively, mix them, place them in a reactor, add isopropanol 10 times the weight of bentonite and stir , to obtain bentonite suspension;

[0056] (2) add pre-dissolved dimer acid ethanol solution to the bentonite suspension of step (1), stir evenly, then add sodium persulfate, the weight of described sodium persulfate in the system is 0.15%, heat and reflux to The reaction is complete and the product is isolated;

[0057](3) The product is transferred to a filter press equipment, the filter cake is washed with absolute ethanol for 3 times, then washed with purified water for 3 times, dried at a temperature of 60-80°C, and dried to obtain the product;

[0058] Wherein, the dimer acid concentration in the dimer acid ethanol solution is 6% (v / v), and the added amount...

Embodiment 2

[0059] Embodiment 2 preparation of aqueous auxiliary material

[0060] The formula for the preparation of the water-based auxiliary material in Example 2 is shown in the table.

[0061]

[0062] Preparation:

[0063] (1) Dissolve modified organic bentonite in water to make a 2% (m / v) solution for later use; respectively dissolve amine neutralizer and associative thickener in water to make 20% (m / v) And 50% (m / v) solution standby;

[0064] (2) 2% (m / v) organobentonite diluent, 20% (m / v) of water-based polyurethane emulsion, the organic bentonite dilution that step (1) makes with the speed limit of 450 rev / mins are dropped into successively while stirring Amine diluent and remaining amount of water, stirred for 8 minutes;

[0065] (3) drop into the alkali-swellable thickener of formula quantity in step (2), continue to stir for 8 minutes;

[0066] (4) slowly drip the n-amyl alcohol of formula quantity in step (3), continue to stir for 8 minutes;

[0067] (5) Put the 50% ...

Embodiment 3-8

[0074] Embodiment 3-8 water-based metallic paint preparation

[0075] The formula prepared by embodiment 3-8 waterborne metallic paint is as shown in the table.

[0076]

[0077] Preparation: Add water-based acrylic polyol dispersion, water-based polyurethane dispersion, pearlescent pigment, and water-based auxiliary materials sequentially while stirring at 600 rpm according to the formula amount shown in the above table, and stir for 50 minutes to obtain a water-based metallic paint.

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Abstract

The invention relates to a water-based auxiliary material capable of improving application properties of a water-based metal and a pearl finish and a preparation method of the water-based auxiliary material. The water-based auxiliary material comprises the following raw materials in percentages by weight: 10-35% of an aqueous polyurethane emulsion, 1-2.5% of an alkali swelling thickener, 0.2-1% ofan associative thickener, 0.05-0.5% of modified organic bentonite, 0.1-0.4% of an amine neutralizer, 1-5% of n-pentanol and 60-80% of deionized water. The water-based auxiliary material provided by the invention can be used for two continuous spraying of the water-based metal and the pearl finish in the environment with 90% or more of high humidity, and ensures that spraying of the water-based metal and the pearl finish during construction is uniform, has no sagging floating, uniform gloss, no color shading and a fine and smooth surface.

Description

technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to a water-based auxiliary material capable of improving the workability of water-based metal and pearlescent paints and a preparation method thereof. Background technique [0002] Topcoat, also known as finishing paint, is the last layer of paint in multi-layer coating. It should have good resistance to external conditions, and must have the necessary hue and decoration. Layers are protective. Topcoats used outdoors also need to have excellent weather resistance. The decorative effect and weather resistance of the topcoat not only depend on the paint base used, but also have a great relationship with the pigments used and the preparation process. With people's further understanding of the environmental protection, decorative and protective functions of coatings, consumers have put forward higher requirements for decorative styles. Compared with conventional ordinary...

Claims

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Application Information

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IPC IPC(8): C09D133/00C09D5/02C09D5/36C09D7/62C09D7/65C09D7/63
CPCC08K2201/014C08L2205/025C08L2205/03C09D5/024C09D5/028C09D5/36C09D133/00C08L75/04C08K9/04C08K3/346
Inventor 冯兆均阮伟明伍祺卓李耀明陈容爱
Owner GUANGDONG YATU CHEM
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