Wide-temperature-range impact-resisting waterborne damping coating and preparation method thereof

A damping coating and impact-resistant technology, applied in the field of damping coatings, can solve the problems of film-forming performance, impact resistance and flexibility decline, poor high-temperature damping performance of polymer emulsion, and reduce the damping performance of the coating film in high-temperature areas, etc., to improve Effects of glass transition temperature, improvement of impact resistance and flexibility, and improvement of damping performance

Active Publication Date: 2018-08-24
广州化工研究设计院有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to ensure the impact resistance and flexibility of the coating film, it is often necessary to appropriately increase the amount of polymer emulsion in the blending formula. However, due to the poor high-temperature damping performance of the polymer emulsion, the increase in the content of the polymer emulsion will significantly reduce the high temperature of the coating film. Zone damping performance
Increasing the glass transition temperature of the polymer emulsion is conducive to improving the damping performance in the high temperature region, but the increase of the glass transition temperature will lead to a decrease in film-forming performance, impact resistance and flexibility.
At present, many studies on water-based damping coatings have been reported. The focus of the research is to broaden the effective temperature range of water-based damping coatings, but there are few reports on improving the impact resistance, flexibility and other mechanical properties of damping coatings.

Method used

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  • Wide-temperature-range impact-resisting waterborne damping coating and preparation method thereof
  • Wide-temperature-range impact-resisting waterborne damping coating and preparation method thereof

Examples

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preparation example Construction

[0062] The preparation method of the above-mentioned wide temperature range impact-resistant water-based damping coating comprises the following steps:

[0063] 1) Preparation of slurry: Mix hard-core soft-shell acrylic emulsion, propylene glycol, film-forming aids and water evenly, then add wetting and dispersing agent, defoamer, multifunctional additives and fibers in sequence, and mix evenly;

[0064] 2) Mixing of filler and slurry: add inorganic filler to the slurry and mix evenly;

[0065] 3) Consistency adjustment: adding a thickener to adjust the consistency of the system to obtain a wide temperature range impact-resistant water-based damping coating.

Embodiment 1

[0068] A preparation method of a wide temperature range impact-resistant water-based damping coating, comprising the following steps:

[0069] 1) Preparation of slurry: Mix 40 parts of hard-core soft-shell acrylic emulsion, 2.5 parts of propylene glycol, 3 parts of dodecyl alcohol ester and 10 parts of deionized water, and then add 0.5 parts of polycarboxylate sodium salt, 0.5 parts 1 part of nonionic polysiloxane defoamer, 0.5 part of 2-amino-2-methyl-1-propanol and 5 parts of tetraneedle zinc oxide whiskers, stirred at low speed and mixed evenly;

[0070] 2) Mixing of filler and slurry: add 10 parts of 200 mesh flake mica powder, 10 parts of 600 mesh flake mica powder, 15 parts of 1250 mesh quartz powder, 30 parts of 1250 mesh wollastonite and 5 parts of 1250 mesh into the slurry Talcum powder, stir at high speed to mix evenly;

[0071] 3) Consistency adjustment: first add 0.5 parts of polyurethane thickener to adjust the consistency of the system, then add 0.3 parts of acr...

Embodiment 2

[0074] A preparation method of a wide temperature range impact-resistant water-based damping coating, comprising the following steps:

[0075] 1) Preparation of slurry: mix 50 parts of hard-core soft-shell acrylic emulsion, 0.5 parts of propylene glycol, 1 part of dodecyl alcohol ester and 5 parts of deionized water, and then add 0.5 parts of acrylate copolymer ammonium salt , 0.5 parts of mineral oil defoamer, 1 part of 2-amino-2-methyl-1-propanol and 5 parts of tetraneedle zinc oxide whiskers, stirred at low speed and mixed evenly;

[0076] 2) Mixing of filler and slurry: Add 15 parts of 100-150 mesh flake mica powder, 15 parts of 600 mesh flake mica powder, 20 parts of 700 mesh diatomite, 20 parts of 1250 mesh wollastonite and 5 Part 1250 mesh talcum powder, high-speed stirring and mixing;

[0077] 3) Consistency adjustment: first add 0.5 part of polyurethane thickener to adjust the consistency of the system, then add 0.2 part of acrylic thickener, stir and disperse at med...

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Abstract

The invention discloses wide-temperature-range impact-resisting waterborne damping coating and a preparation method thereof. The waterborne damping coating is prepared from the following raw materialsin parts by mass: 35 to 65 parts of hard-core and soft-shell type acrylic emulsion, 40 to 80 parts of inorganic filler, 0.5 to 3 parts of propylene glycol, 2 to 5 parts of fibers, 0.5 to 3 parts of film forming auxiliary agent, 0.1 to 1 part of wetting dispersant, 0.1 to 1 part of de-foaming agent, 0.1 to 2 parts of thickening agent, 0.3 to 1 part of multifunctional auxiliary agent and 3 to 10 parts of water. The preparation method of the waterborne damping coating disclosed by the invention is simple; all components are uniformly mixed in sequence and in batches to obtain the waterborne damping coating. The waterborne damping coating disclosed by the invention has the advantages that a preparation technology is simple and a coating layer formed by curing the coating to form a film has excellent impact-resisting performance, good toughness and uneasiness for cracking; the waterborne damping coating has wide-temperature-range high damping performance.

Description

technical field [0001] The invention relates to a wide temperature range impact-resistant water-based damping coating and a preparation method thereof, belonging to the technical field of damping coatings. Background technique [0002] Damping coating is a functional coating with shock absorption, noise reduction, flame retardant, anti-corrosion and other properties, which is mainly realized by friction between polymer chains, between polymer and inorganic fillers, and between fillers. The dissipation of vibration energy can achieve the effect of vibration reduction and noise reduction, and provide people with a quiet living and working environment. [0003] Damping coatings can be divided into oily damping coatings and water-based damping coatings according to different dispersion media. Among them, the water-based damping coating uses water as the dispersion medium, the content of volatile organic compounds is very low, it is green and environmentally friendly, and it doe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/04C09D7/61C09D7/63
CPCC08K2201/014C08L2205/02C08L2205/035C09D7/61C09D7/63C09D7/70C09D133/04C08L33/02C08K13/04C08K5/053C08K3/34C08K3/36C08K7/08
Inventor 陈绵锋杨斌莫杨妙王怡博
Owner 广州化工研究设计院有限公司
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