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Damping coating forming multi-layer compound structure

A damping coating, multi-layer composite technology, applied in the field of damping coatings, can solve the problems affecting the life of the hull and structural safety, long drying time, large smoke generation, etc., to reduce ship vibration and noise, excellent mechanical properties, and damping temperature. field width effect

Active Publication Date: 2018-02-23
QINGDAO ADVANCED MARINE MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1) The vibration of the ship affects the life of the hull and structural safety, leaving serious safety hazards
[0004] 2) The vibration of the ship affects the normal operation of the equipment, especially the accuracy of precision instruments and meters
[0005] 3) The vibration and noise of the ship will easily seriously endanger the physical and mental health of the staff
[0006] 4) Working and living in a vibration and noise environment for a long time is prone to fatigue and irritability, causing potential safety hazards
[0007] 5) For warships, vibration and noise will also affect tactical indicators, exposing themselves to enemy attacks
However, this water-based damping coating has the following disadvantages: under low temperature and high humidity environment, the drying time is long when forming a film; storage stability is poor
The coating is a multi-functional coating with sound insulation, heat insulation, anti-corrosion and certain sealing performance in addition to vibration and noise reduction. It is composed of a polyurethane damping layer and an epoxy resin constrained layer. When the thickness-to-substrate thickness ratio is 1.0 to 1.5, the composite loss factor in the temperature range of -20 to 60°C can be greater than 0.2. However, the multifunctional damping coating layer uses halogens such as decabromodiphenyl ether and octabromodiphenyl ether. Flame retardant, when burning, it produces a large amount of smoke and produces toxic gases

Method used

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  • Damping coating forming multi-layer compound structure
  • Damping coating forming multi-layer compound structure
  • Damping coating forming multi-layer compound structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Get 100 grams of polyether with an equivalent weight of 1000, 17.4 grams of toluene diisocyanate, add 4.5 grams of 1,4-butanediol after the reaction, 10 grams of tris (2-chloroethyl) phosphate, 120 grams of 200 mesh mica powder, mix Evenly coated on the substrate, the layer is lower T gDamping paint layer; get equivalent is 400 polyether 40 grams, polyether 100 grams that equivalent is 1000, diphenylmethane diisocyanate 100 grams, add 1,6-hexanediol 35 grams after reaction, three (2-chloro Ethyl) phosphoric acid ester 50 grams, 200 mesh mica powder 300 grams, after mixing evenly, be coated on lower T g The upper layer of the damping paint layer, which is the higher T g Damping coating layer: take 100 grams of E-44 epoxy resin, 40 grams of curing agent with an amine value of 300, 100 grams of aluminum hydroxide, 40 grams of talcum powder, 6 grams of glycidyl ether reactive diluent, and 3 grams of polyamide wax , 1 gram of organic chromium complex coupling agent, 0.5 gr...

Embodiment 2

[0039] Get the polyether 90 grams that the equivalent weight is 900, diphenylmethane diisocyanate 25 grams, add neopentyl glycol 5.2 grams after the reaction, tris (2-chloroisopropyl) phosphate 8 grams, 130 grams of 100 order graphites, mix Evenly coated on the substrate, the layer is lower T g Damping paint layer: get 120 grams of polyether with an equivalent weight of 600, 60 grams of polyether with an equivalent weight of 1200, and 135 grams of polyphenyl polymethylene diisocyanate, add 3,5-dimethylthiotoluenediamine 80 after the reaction gram, 58 grams of three (2-chloroisopropyl) phosphate esters, 320 grams of 100 mesh graphites, mix uniformly and coat at lower T g The upper layer of the damping paint layer, which is the higher T g Damping paint layer: get 100 grams of E-44 epoxy resin, 38 grams of curing agent with an amine value of 350, 150 grams of antimony trioxide, 50 grams of glass fiber, 7 grams of glycidyl ether reactive diluent, and gas-phase white carbon 2 gra...

Embodiment 3

[0041] Get the polyether 80 grams that equivalent weight is 800, polyphenyl polymethylene diisocyanate 26 grams, add 1,4-cyclohexanediol 5.9 grams, three (2-chloroisopropyl) phosphoric acid ester 5 grams after reaction, 130 grams of 160 mesh vermiculite powder, mixed evenly and coated on the substrate, this layer is a lower T g Damping coating layer: take 120 grams of polyether with an equivalent weight of 600, 60 grams of polyether with an equivalent weight of 1200, and 87 grams of toluene diisocyanate, add 3,3'-dichloro-4,4'-diaminodiphenylmethane after the reaction 100 grams, 20 grams of tris (2-chloroisopropyl) phosphate, 400 grams of 160 mesh vermiculite powder, mix evenly and apply on lower T g The upper layer of the damping paint layer, which is the higher T g Damping coating layer: Take 100 grams of E-51 epoxy resin, 35 grams of curing agent with an amine value of 380, 150 grams of expandable graphite, 56 grams of titanium dioxide, 5 grams of glycidyl ester reactive d...

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Abstract

The invention discloses a damping coating forming a multi-layer compound structure. The damping coating is compounded of a polyurethane damping coating layer and an epoxy-resin restrained coating layer which have different glass-transition temperatures (Tg); the damping coating layer with the Tg (which is from -60 DEG C to -40 DEG C) is composed of a polyurethane prepolymer, a chain extender, a fire retardant and lamellar padding; the restrained coating layer with the Tg (which is from -20 DEG C to 0 DEG C) is composed of epoxy resin with low molecular weight, a curing agent, a reactive diluent and a fire retardant. When the thicknesses of the two layers of the damping coating with different Tg are 0.8 mm-1.2 mm respectively, and the ratio of the total thickness of the restrained coating layer and the damping coating layer to the thickness of a substrate is 1.8-2.2, compound loss factors in a range of 0.12-0.28 in the temperature range of -40-80 DEG C can be obtained. The damping coating is high in peak value of the compound loss factors, wide in damping temperature range and mainly used for reducing vibration and noise of ships; meanwhile, the coating has high mechanical performance, processing performance and fire retardant performance.

Description

technical field [0001] The invention relates to a damping coating which constitutes a multilayer composite structure, and relates to the field of coatings mainly formed of organic films, in particular to a damping coating with a multilayer composite structure composed of polyurethane and epoxy resin, which has the function of reducing vibration and noise. It can be used in ships, aircrafts, automobiles, mechanical engineering and other fields. Background technique [0002] The vibration and noise generated by the ship will have a great impact on the ship and personnel. These obvious impacts include: [0003] 1) The vibration of the ship affects the life of the hull and structural safety, leaving serious safety hazards. [0004] 2) The vibration of the ship affects the normal operation of the equipment, especially the accuracy of precision instruments. [0005] 3) The vibration and noise of the ship will easily seriously endanger the physical and mental health of the staff....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/08C09D5/18C09D7/61C09D7/65C09D163/00C08G18/66C08G18/48C08G18/32B05D7/00B05D7/24
CPCB05D7/24B05D7/56B05D2503/00B05D2504/00C08G18/3206C08G18/48C08G18/4804C08G18/6674C08K3/34C08K5/521C08L2201/02C08L2205/03C09D5/18C09D163/00C09D175/08C08L77/00C08L91/00C08K3/22B05D2420/01B05D2420/02B05D2420/03
Inventor 张茂伟周宏达邸春阳陶刚国晓军刘培礼刘连河
Owner QINGDAO ADVANCED MARINE MATERIAL TECH
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