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Environmental-friendly graphene high-weather-resistance automobile aqueous coating and preparation method thereof

A water-based coating and graphene technology, applied in the direction of anti-corrosion coatings, coatings, etc., can solve the problems of weather resistance that cannot meet the needs of use, achieve excellent mechanical strength, reduce cracking and peeling, and reduce wear and tear effects

Inactive Publication Date: 2018-11-20
厦门派探特环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that the weather resistance of the existing automotive water-based coatings in the above-mentioned prior art cannot meet the needs of use, the present invention provides a kind of environmentally friendly graphene high weather-resistant automotive water-based coatings and a preparation method thereof. Weather-resistant water-based coatings use fluorocarbon resin and polyurethane resin as the resin matrix, add unsaturated fatty acids and specific surfactants, and then add graphene, and use the shielding effect of graphene to work together with unsaturated fatty acids to enhance the coating. Mechanical strength and weather resistance reduce the damage to the coating caused by external wear and the problem of low weather resistance under high-intensity use. It has the advantages of excellent weather resistance, high mechanical strength, strong anti-corrosion ability, and excellent color and brightness of the coating.

Method used

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  • Environmental-friendly graphene high-weather-resistance automobile aqueous coating and preparation method thereof
  • Environmental-friendly graphene high-weather-resistance automobile aqueous coating and preparation method thereof

Examples

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Effect test

Embodiment 1

[0038]Step 1. Add 25 parts of water-based carboxyl-containing polyurethane, 38 parts of water-based fluorocarbon resin and 43 parts of water into the stirring equipment, heat up to 120°C, stir at 600 rpm for 70 minutes, and add 8.6 parts of nano Silica and 2 parts of unsaturated fatty acids;

[0039] Step 2: On the basis of step 1, add 5.3 parts of composite surfactant, 3.6 parts of silane coupling agent, 4.5 parts of reactive diluent, 2.1 parts of defoamer, 28 parts of pigments and fillers, and stir for 95 minutes at a speed of 1000 rpm , then add 1.2 parts of acetyl tributyl citrate, cool down to 80°C, and continue to stir for 45 minutes;

[0040] Step 3. Disperse 9 parts of graphene and add it to the product of Step 2 after ultrasonic vibration, then add 1.8 parts of silicone water repellent and 0.8 parts of UV absorber, heat up to 95°C, and stir at a rate of 1000 rpm After 65 minutes, cool down and filter to obtain the first component of the environmentally friendly graph...

Embodiment 2

[0043] Step 1. Add 25 parts of water-based carboxyl-containing polyurethane, 39 parts of water-based fluorocarbon resin and 44 parts of water into the stirring equipment, raise the temperature to 120°C, stir at 600 rpm for 70 minutes, and add 9.5 parts of nano Silica and 2.3 parts of unsaturated fatty acids;

[0044] Step 2: On the basis of step 1, add 6.1 parts of composite surfactant, 3.5 parts of silane coupling agent, 4.2 parts of active diluent, 2.6 parts of defoamer, 31 parts of pigments and fillers, and stir at a speed of 1000 rpm for 95 minutes , then add 1.2 parts of acetyl tributyl citrate, cool down to 80°C, and continue to stir for 45 minutes;

[0045] Step 3. Disperse 9 parts of graphene and add it to the product of Step 2 after ultrasonic vibration, then add 1.6 parts of silicone water repellent and 1.2 parts of UV absorber, heat up to 95°C, and stir at a rate of 1000 rpm After 65 minutes, cool down and filter to obtain the first component of the environmentally...

Embodiment 3

[0048] Step 1. Add 26 parts of water-based carboxyl-containing polyurethane, 43 parts of water-based fluorocarbon resin and 48 parts of water into the stirring equipment, raise the temperature to 120°C, stir at 600 rpm for 70 minutes, and add 9.6 parts of nano Silica and 2.6 parts of unsaturated fatty acids;

[0049] Step 2: On the basis of step 1, add 6.5 parts of composite surfactant, 3.8 parts of silane coupling agent, 4.3 parts of active diluent, 2.8 parts of defoamer, 35 parts of pigments and fillers, and stir for 95 minutes at a speed of 1000 rpm , then add 1.5 parts of acetyl tributyl citrate, cool down to 80°C, and continue stirring for 45 minutes;

[0050] Step 3, disperse 10.5 parts of graphene, add it to the product of step 2 after ultrasonic vibration, then add 1.9 parts of silicone waterproofing agent, 1.2 parts of ultraviolet absorber, heat up to 95 ° C, and stir at a rate of 1000 rpm After 65 minutes, cool down and filter to obtain the first component of the en...

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Abstract

The invention provides an environmental-friendly graphene high-weather-resistance automobile aqueous coating and a preparation method thereof. The environmental-friendly graphene high-weather-resistance automobile aqueous coating comprises a component A and a component B, wherein the component A comprises the following components in parts by weight: 20-30 parts of aqueous carboxyl-containing polyurethane, 30-50 parts of an aqueous fluorocarbon resin, 8-12 parts of graphene, 6-10 parts of nano silicon dioxide, 1-2 parts of an organic silicon waterproof agent, 2-3 parts of unsaturated fatty acid, 4-8 parts of a composite surfactant, 1-1.5 parts of acetyl tributyl citrate, 3-5 parts of a silane coupling agent, 4-5 parts of active diluents, 2-3 parts of a defoaming agent, 20-40 parts of a pigment filler, 0.5-2 parts of an ultraviolet absorbent and 40-50 parts of water; the component B is an isocyanate curing agent; the weight ratio of the component A to the component B is (5-8):1. The invention further provides a preparation method of the environmental-friendly graphene high-weather-resistance automobile aqueous coating. Under synergetic effects of multiple aids, the aqueous automobilecoating has excellent mechanical strength and weather resistance.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to an environmentally friendly graphene high weather-resistant automotive water-based coating and a preparation method thereof. Background technique [0002] With the improvement of the level of social development, environmental protection has increasingly become the main trend of social development, and the concept of strengthening environmental protection has also been deeply rooted in the hearts of the people. In all aspects of people's daily life, such as food, clothing, housing and transportation, more and more attention is paid to green and low-carbon travel, the use of environmentally friendly materials, and good garbage classification. Among them, the use of environmentally friendly automotive coatings is an important way to provide an environmentally friendly living environment. The improvement of the economic level has brought about an increase in the number of cars per c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D4/02C09D4/06C09D5/08C09D7/61C09D7/63
CPCC09D4/06C09D5/08C09D7/61C09D7/63
Inventor 莫学友
Owner 厦门派探特环保科技有限公司
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