A kind of water-based damping coating and its application in automobile field
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A damping coating, water-based technology, applied in polyurea/polyurethane coatings, devices for coating liquid on the surface, coatings, etc., can solve the problems of chemical resistance decline and poor paint film strength
Active Publication Date: 2021-04-20
WANHUA CHEM GRP CO LTD +1
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Problems solved by technology
Through experimental verification, it is found that a certain microporous structure in this kind of paint film can significantly improve the loss factor, but the uneven microporous structure will easily lead to poor strength of the paint film and a significant decrease in chemical resistance.
Method used
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Embodiment 1
[0050] Add 30g of emulsion 1 into the paint mixing tank, adjust the speed of the disperser to 600r / min, add 2g of Orotan731A and 0.1g of Tego Foamex1488 in turn and stir for 5min. Add 0.2g of Add 031WUF40, 30g mica powder, 10g talc powder, 15gMH-T70, 0.5g carbon black in sequence, adjust the speed of the disperser to 1500r / min, and stir for 30min.
[0051] Reduce the speed of the disperser to 800r / min, add 0.8gA-801, 11.3g water and 0.1g TegoFoamex1488, stir for 15min and then discharge.
Embodiment 2
[0053] Add 40g of emulsion 1 into the paint mixing tank, adjust the speed of the disperser to 500r / min, add 1.0g of Orotan731A and 0.15g of Tego Foamex1488 in turn and stir for 5min. Add 0.5g of Add 031WUF40, 10g of mica powder, 15g of talc powder, 20g of MH-T70, and 2g of iron black in sequence, adjust the speed of the disperser to 1300r / min, and stir for 30min.
[0054] Reduce the speed of the disperser to 900r / min, add 1.0g A-801, 10.2g water, 0.15g TegoFoamex1488, stir for 15min and then discharge.
Embodiment 3
[0056] Add 35g of emulsion 1 into the paint mixing tank, adjust the speed of the disperser to 600r / min, add 1.5g of BYK-190 and 0.25g of BYK-024 and stir for 5min. Add 1.0g of Add 031WUF40, 25g of mica powder, 15g of talc powder, 10g of MH-T70, and 5g of iron black in sequence, adjust the speed of the disperser to 1500r / min, and stir for 30min.
[0057] Reduce the speed of the disperser to 800r / min, add 0.6gA-801, 6.4g water, 0.25g BYK-024, stir for 5min and then discharge.
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Abstract
The present invention provides a water-based damping coating and its application in the field of automobiles. The water-based damping coating of the present invention is prepared from raw materials mainly comprising the following components, wherein the mass percentages of the components are based on the total mass of the raw materials It is: water-based acrylic emulsion 30-40%, TPU powder 10-20%, filler 20-50%, water-based dispersant 0.5-3.0%, water-based defoamer 0.2-1.0%, foaming agent 0.2-1.0%, thickening agent 0.2-1.0% of the TPU powder; wherein, the glass transition temperature of the aqueous acrylic emulsion is -20-30°C, preferably -10-10°C; the melting point of the TPU powder is 70-110°C, preferably 80-90°C °C. The water-based damping paint provided by the invention can realize wider damping temperature range and better chemical resistance of the damping paint while ensuring the strength of the paint film.
Description
technical field [0001] The invention relates to a water-based damping paint and its preparation method and application, which is a water-based damping paint especially suitable for automobiles. Background technique [0002] With the development of social economy, noise pollution has gradually attracted people's attention. As a common means of transportation for modern people, the current production, sales and ownership of automobiles are increasing rapidly. People pay more and more attention to the control of noise inside automobiles during daily use. The control level of the noise in the car has gradually become one of the important symbols to measure the safety and comfort quality of the car. There are many vibration sources in the car, and one of the more effective methods is to use damping materials to reduce vibration and noise inside and outside the car. [0003] At present, the mainstream damping material in the automobile market is asphalt board. This material has ...
Claims
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Application Information
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