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One-component PU low-temperature curing hardware coating and preparation method thereof

A one-component, hardware technology, applied in polyurea/polyurethane coatings, coatings, etc., can solve the problems of inability to have surface coating effects, fail to meet product quality requirements, poor physical and chemical properties, etc., and achieve excellent physical and chemical resistance , low cost, and the effect of saving energy for customers

Active Publication Date: 2011-12-14
深圳市深赛尔股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the continuous improvement of people's living standards, the appearance aesthetics of electronic products and consumer goods are constantly improving. It is required that electronic products and plastic products with metal substrates also have good surface coating effects to meet people's viewing requirements. Metal adhesion is good, but the construction temperature is high, energy consumption is high, and the cost is high. In order to save energy and protect the environment, people generally pursue coatings and processing techniques with low energy consumption
[0003] However, at present, the curing agent and adhesion promoter in the low-temperature two-component PU coating will make the silver powder thicker and blacken, and the physical and chemical properties are not good, the cost of the curing agent is high, the construction is complicated, and the two components are mixed. The construction time is short and cannot have a good surface coating effect
Far from meeting the quality requirements of the product

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The preparation method of the one-component PU low-temperature curing hardware coating of the present invention comprises the following steps.

[0031] Ingredients 1: In a stirring measuring cup with a certain volume, first add 1 part of mixed solvent and 1 part of acid catalyst, stir with a stirring rod to fully dissolve and filter to obtain a dilute solution.

[0032] Ingredients 2: Add 30 parts of hydroxy acrylic resin and 15 parts of hydroxy polyester resin into another iron bucket, fix the iron bucket with a suitable size disperser, start it slowly and increase to 1500 rmp, and then add 20 parts of amino resin Disperse to 2000rmp at room temperature for 20 minutes to obtain a mixture.

[0033] Dispersion: add the dilute solution in ingredient 1 to the mixture of ingredient 2 according to the formula ratio, then add 9 parts of mixed solvent and 0.25 part of leveling agent respectively, and disperse at room temperature for 20 minutes to obtain varnish.

[0034] Modu...

Embodiment 2

[0038] The preparation method of the one-component PU low-temperature curing hardware coating of the present invention comprises the following steps.

[0039] Ingredients 1: In a stirring measuring cup with a certain volume, first add 5 parts of mixed solvent and 5 parts of acid catalyst, stir with a stirring rod to fully dissolve and filter to obtain a dilute solution.

[0040] Ingredients 2: Add 40 parts of hydroxy acrylic resin and 25 parts of hydroxy polyester resin to another iron bucket, fix the iron bucket with a suitable size disperser, start it slowly and increase to 1500rmp, and then add 30 parts of amino resin Disperse to 2000rmp at room temperature for 60 minutes to obtain a mixture.

[0041] Dispersion: add the dilute solution in ingredient 1 to the mixture of ingredient 2 according to the formula ratio, and then add 15 parts of mixed solvent, 2 parts of leveling agent, and 1 part of defoamer to disperse at room temperature for 60 minutes to obtain varnish.

[00...

Embodiment 3

[0055] The preparation method of the one-component PU low-temperature curing hardware coating of the present invention comprises the following steps.

[0056] Ingredients 1: In a stirring measuring cup with a certain volume, first add 3 parts of mixed solvent and 3 parts of acid catalyst, stir with a stirring rod to fully dissolve and filter to obtain a dilute solution.

[0057] Ingredients 2: Add 35 parts of hydroxy acrylic resin and 20 parts of hydroxy polyester resin to another iron bucket, fix the iron bucket with a suitable size disperser, start it slowly and increase to 1500rmp, then add 25 parts of amino resin Disperse to 2000rmp at room temperature for 40 minutes to obtain a mixture.

[0058] Dispersion: add the dilute solution in ingredient 1 to the mixture of ingredient 2 according to the formula ratio, and then add 12 parts of mixed solvent, 1 part of leveling agent, and 0.5 part of defoamer to disperse at room temperature for 40 minutes to obtain varnish.

[0059]...

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Abstract

The invention relates to a single-component poly urethane (PU) low-temperature cured hardware coating and a preparation method. Vernix is prepared from hydroxy acrylic resin serving as a main ingredient, part of hydroxyl polyester resin and amino resin and a mixed solvent, an acid catalyst, a defoamer and a flatting agent which serve as auxiliary materials. The preparation method comprises the following steps of: preparing, dispersing, and blending. The single-component PU low-temperature cured hardware coating has the characteristics of simple construction process, long service life, high metal texture of prepared metallic paint, energy conservation and low cost, and is mainly applied to hardware substrates.

Description

technical field [0001] The invention relates to PU coatings, amino coatings and preparation methods thereof, and mainly relates to a preparation method of low-temperature curing one-component PU hardware varnish and colored paint. Background technique [0002] With the continuous improvement of people's living standards, the appearance aesthetics of electronic products and consumer goods are constantly improving. It is required that electronic products and plastic products with metal substrates also have good surface coating effects to meet people's viewing requirements. Metal adhesion is good, but the construction temperature is high, the energy consumption is high, and the cost is high. In order to save energy and protect the environment, people generally pursue coatings and processing techniques with low energy consumption. [0003] However, at present, the curing agent and adhesion promoter in the low-temperature two-component PU coating will make the silver powder thick...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/06
Inventor 何林勇刘国民
Owner 深圳市深赛尔股份有限公司
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