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Water-based amino baking varnish for stainless steel thermos cup and preparation method thereof

An amino baking paint, thermos cup technology, applied in the direction of primer, coating, polyester coating, etc., can solve the problems of paint surface wear, poor paint film adhesion, high VOC content of oil-based paint, achieve broad market prospects, improve adhesion Strong, easy-to-clean effect

Active Publication Date: 2021-04-27
江苏云湖新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, stainless steel thermos cups are all made of stainless steel by stamping and stretching, and the stress of each part of the cup varies greatly, especially the stress of the curved bottom part changes greatly, which makes the adhesion of the paint film poor.
At the same time, stainless steel thermos cups are required to be boiled for high-temperature disinfection and alcohol wipes in daily use, so the paint for thermos cups has high requirements for adhesion, alcohol resistance, and adhesion after boiling, otherwise it is easy to appear paint. The surface is worn or peeled off, which affects the beautification and decoration of the baking paint
Moreover, oil-based paints have high VOC content and strong odor. Under the pressure of increasingly stringent environmental protection policies, it is likely that they will not be able to meet environmental protection requirements in the future.

Method used

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  • Water-based amino baking varnish for stainless steel thermos cup and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The water-based amino baking varnish of the stainless steel thermos cup in this embodiment includes a water-based amino baking varnish primer and a water-based amino baking varnish top coat.

[0032] The water-based amino baking varnish primer is composed of the following raw materials in parts by mass: 50 parts of epoxy hybrid acrylic resin dispersion; 0.3 parts of neutralizer; 3 parts of cosolvent; 5 parts of amino resin; 5 parts of blocked isocyanate; 35 parts of pigment concentrate; 2 parts of adhesion promoter; 0.1 part of wetting agent; 0.1 part of defoamer; 0.2 parts of blocked acid catalyst; 0.1 part of thickener. No water was added to the raw material of the primer in this embodiment.

[0033] Wherein, the water-based pigment concentrated slurry is water-based titanium white slurry. The water-based titanium dioxide slurry is composed of the following raw materials in parts by mass: 21 parts of water; 8 parts of dispersant; 1 part of fumed silica; 0.05 parts of...

Embodiment 2

[0045] The water-based amino baking varnish of the stainless steel thermos cup in this embodiment includes a water-based amino baking varnish primer and a water-based amino baking varnish top coat.

[0046] The water-based amino baking varnish primer is composed of the following raw materials in parts by mass: 65 parts of epoxy hybrid acrylic resin dispersion; 0.5 parts of neutralizer; 6 parts of water; 5 parts of cosolvent; 6.5 parts of amino resin; blocked isocyanate 2 parts; 10 parts of water-based pigment concentrate; 3 parts of adhesion promoter; 0.3 parts of wetting agent; 0.2 parts of defoamer; 0.4 parts of blocked acid catalyst; 1 part of thickener.

[0047] Wherein, the water-based pigment concentrated slurry is water-based scarlet slurry. The water-based scarlet pulp is composed of the following raw materials in parts by mass: 39.5 parts of water; 0.3 parts of a neutralizer; 15 parts of a dispersant; 0.5 parts of fumed silicon dioxide; 0.2 parts of a defoamer;

[00...

Embodiment 3

[0060] The water-based amino baking varnish of the stainless steel thermos cup in this embodiment includes a water-based amino baking varnish primer and a water-based amino baking varnish top coat.

[0061] The water-based amino baking varnish primer is composed of the following raw materials in parts by mass: 55 parts of epoxy hybrid acrylic resin dispersion; 0.4 parts of neutralizer; 10 parts of water; 5 parts of cosolvent; 8 parts of amino resin; blocked isocyanate 3 parts; 12 parts of water-based pigment concentrate; 5 parts of adhesion promoter; 0.5 parts of wetting agent; 0.3 parts of defoamer; 0.5 parts of blocked acid catalyst; 0.7 parts of thickener.

[0062] Wherein, the water-based pigment concentrated slurry is a water-based organic medium yellow slurry. The water-based organic medium yellow paste is composed of the following raw materials in parts by mass: 43.95 parts of water; 0.6 parts of neutralizer; 15 parts of dispersant; 0.3 parts of fumed silica; 0.15 parts...

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Abstract

The invention relates to a water-based coating, in particular to a water-based amino baking varnish for a stainless steel thermos cup and a preparation method thereof. Its characteristic is that the primer is made of epoxy hybrid acrylic dispersion with good adhesion to stainless steel, and an adhesion promoter is added to effectively improve the adhesion of the primer. At the same time, the mixed curing of blocked isocyanate and amino resin is introduced, which is effective It solves the problem of poor adhesion after boiling caused by the large stress difference on the bottom surface of the stainless steel thermos cup, so that the baking paint coated on the surface of the stainless steel thermos cup is not easy to peel off. The topcoat is made of epoxy hybrid acrylic dispersion and polyester dispersion, combined with the high gloss of polyester dispersion, the characteristics of high hardness, good flexibility and alcohol resistance of epoxy hybrid acrylic dispersion, making the paint surface not easy to wear, In order to achieve high resistance to alcohol wiping and boiling resistance. At the same time, the use of pearlescent powder also makes the thermos cup have a good sparkling decorative effect.

Description

technical field [0001] The invention relates to a water-based coating, in particular to a water-based amino baking varnish for a stainless steel thermos cup and a preparation method thereof. Background technique [0002] Stainless steel thermos cups are common drinking water utensils in our daily life. In order to meet the aesthetics and preferences of different consumer groups, the outer surface of stainless steel thermos cups often needs to be painted and beautified. At present, the surface of common stainless steel thermos cups on the market is beautified with oil-based paint. [0003] However, stainless steel thermos cups are all made of stainless steel through stamping and stretching, and the stress of each part varies greatly, especially the stress of the curved bottom part changes greatly, which makes the adhesion of the paint film poor. At the same time, stainless steel thermos cups have high-temperature disinfection and alcohol wiping requirements in daily use, so ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/10C09D167/00C09D161/28C09D161/32C09D7/61C09D7/63C09D5/00
CPCC08L2205/03C09D5/002C09D163/10C09D7/61C09D7/63C08L61/28C08K13/02C08K3/36C08K5/521C08K5/42C08L67/00C08L61/32
Inventor 刘嘉东宗志清
Owner 江苏云湖新材料科技有限公司
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