Environment-friendly thermal insulation damping coating and preparation method thereof

A kind of damping coating and environment-friendly technology, applied in the direction of coating, etc., can solve the problems of difficult compatibility, unstable coating performance, poor flexibility, etc., and achieve excellent heat insulation and damping performance, moderate hard drying time, and moderate surface drying time Effect

Inactive Publication Date: 2021-03-26
SHANDONG NORTH MODERN CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Damping coatings use the viscoelastic properties of organic polymer materials to convert the mechanical vibration energy of sound waves into thermal energy and release them to achieve the purpose of reducing amplitude, reducing vibration and suppressing noise. However, traditional damping coatings are generally dispersed in organic solvents. The medium contains a large amount of toxic and harmful substances in production and construction, which affects the health of production and construction personnel, and also pollutes air or water resources. Because water-based damping coatings have good flame retardancy, low toxicity, and are easy to construct It is widely used in the fields of automobiles, trains, ships and household appliances, but the current water-based damping coatings have low adhesion, poor flexibility, heat insulation and damping performance need to be improved
[0003] In order to improve the adhesion, heat insulation and damping performance of water-based damping materials, the most commonly used method is to add various additives, such as adhesion promoters, film-forming aids, plasticizers, etc., but additives The addition of water-based damping coatings can improve some properties of water-based damping coatings to a certain extent, but if a large amount of addition of various substances is difficult to ensure compatibility, and after coating, it is easy to cause unstable performance of coating products and poor thermal insulation damping effect

Method used

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  • Environment-friendly thermal insulation damping coating and preparation method thereof
  • Environment-friendly thermal insulation damping coating and preparation method thereof
  • Environment-friendly thermal insulation damping coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0083] The preparation of flexible acrylic emulsion comprises the following steps:

[0084] ① The monomer butyl acrylate 110kg, isobutyl acrylate 350kg, ethyl methacrylate 10kg, acrylic acid 50kg and emulsifier polyoxyethylene octylphenol ether-1010kg, sodium lauryl sulfate 5kg, deionized water 300kg and Add 2kg of ammonium persulfate into the reactor, stir rapidly for 30 minutes until completely emulsified to obtain a pre-emulsion, and set aside;

[0085] ②Put 418.5kg of pre-emulsion into the reaction kettle, add 139.5kg of deionized water, stir and mix well, then raise the temperature to 65°C, react for 30 minutes, add the remaining pre-emulsifier (418.5kg) dropwise at this temperature After the dropwise addition, continue for 2 hours, cool down to room temperature, add sodium bicarbonate to adjust the pH to 6, and obtain a flexible acrylic emulsion. The glass transition temperature is -24°C as detected by DSC.

Embodiment 2

[0087] The preparation of flexible acrylic emulsion comprises the following steps:

[0088] ① The monomer butyl acrylate 50kg, isobutyl acrylate 250kg, ethyl methacrylate 50kg, acrylic acid 50kg and emulsifier polyoxyethylene octylphenol ether-1050kg, sodium lauryl sulfate 15kg, deionized water 400kg and Add 3kg of ammonium persulfate into the reactor, stir rapidly for 60 minutes until completely emulsified, and obtain a pre-emulsion for subsequent use;

[0089] ②Put 434kg of pre-emulsion into the reaction kettle, add 144.7kg of deionized water, stir and mix well, then heat up to 75°C, and react for 45 minutes, add the remaining pre-emulsifier (434kg) dropwise at this temperature, drop Continue for 3 hours after the addition, cool down to room temperature, add sodium bicarbonate to adjust the pH to 8, and obtain a flexible acrylic emulsion. The glass transition temperature is -15°C as detected by DSC.

Embodiment 3

[0091] The preparation of flexible acrylic emulsion comprises the following steps:

[0092] ① The monomer butyl acrylate 100kg, isobutyl acrylate 300kg, ethyl methacrylate 30kg, acrylic acid 80kg and emulsifier polyoxyethylene octylphenol ether-1040kg, sodium lauryl sulfate 10kg, deionized water 360kg and Add 2.5 kg of ammonium persulfate into the reactor, stir rapidly for 40 minutes until completely emulsified, and obtain a pre-emulsion, which is set aside;

[0093] ②Put 461.25kg of pre-emulsion into the reaction kettle, add 153.75kg of deionized water, stir and mix well, then raise the temperature to 70°C, and after reacting for 40 minutes, add the remaining pre-emulsifier (461.25kg) dropwise at this temperature After the dropwise addition, continue for 2.5 hours, cool down to room temperature, add sodium bicarbonate to adjust the pH to 7, and obtain a flexible acrylic emulsion. The glass transition temperature is -20°C as detected by DSC.

[0094] The remaining flexible ac...

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Abstract

The invention provides an environment-friendly thermal insulation damping coating and a preparation method thereof. The coating is prepared from the following components in parts by weight: flexible acrylic emulsion with the glass-transition temperature of -25 to -15 DEG C, first styrene-acrylic emulsion with the glass-transition temperature of 20-30 DEG C, second styrene-acrylic emulsion with theglass transition temperature of 35 to 45 DEG C, silane-modified hollow glass beads, silane-modified chopped polypropylene fibers and a functional filler. The coating has moderate surface drying timeand hard drying time, has good flexibility, has an adhesive force of 0 grade, has a heat conductivity coefficient reaching the standards of thermal insulation materials, has a composite loss factor eta greater than or equal to 0.05 at -10 DEG C, greater than or equal to 0.14 at 20 DEG C and greater than or equal to 0.04 at 50 DEG C, and has excellent thermal insulation damping performance in a relatively large temperature range.

Description

technical field [0001] The invention relates to the technical field of water-based damping paint, in particular to an environment-friendly heat-insulating damping paint and a preparation method thereof. Background technique [0002] Damping coatings use the viscoelastic properties of organic polymer materials to convert the mechanical vibration energy of sound waves into thermal energy and release them to achieve the purpose of reducing amplitude, reducing vibration and suppressing noise. However, traditional damping coatings are generally dispersed in organic solvents. The medium contains a large amount of toxic and harmful substances in production and construction, which affects the health of production and construction personnel, and also pollutes air or water resources. Because water-based damping coatings have good flame retardancy, low toxicity, and are easy to construct Due to its advantages, it is widely used in the fields of automobiles, trains, ships and household ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/08C09D125/14C09D7/61C09D7/62C09D7/63C09D7/65
CPCC09D133/10C09D7/61C09D7/62C09D7/63C09D7/65C09D7/70C08L2205/025C08L2205/035C08L2205/16C08L2207/53C08L25/14C08L23/26C08L83/12C08K13/06C08K9/10C08K7/28C08K7/26C08K3/04
Inventor 王杰齐春平聂锡铭葛玲娟孙崇彬孔庆媛
Owner SHANDONG NORTH MODERN CHEM IND
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