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Special composite damping coating for ships and warships and preparation method thereof

A composite damping and coating technology, applied in the field of damping composite materials, can solve the problems affecting the health of construction personnel, the air quality inside the ship, the inability to meet the requirements of vibration and noise reduction, and the thick coating construction is easy to sag, etc., to achieve strong design and construction performance Excellent and convenient construction effect

Active Publication Date: 2016-01-27
QINGDAO AIR NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the damping coatings introduced in the above two patents have the following disadvantages: (1) contain asbestos ingredients that have been banned by international maritime affairs, and the flame retardant ingredients contain banned chlorinated paraffin, decabromodiphenyl ether, octabromobiphenyl ether, etc. Halogen flame retardants such as phenylene ether; (2) Polysulfide rubber, a material with a strong odor, is used as a toughening agent, which seriously affects the health of construction workers and the quality of the air in the ship; (3) The viscosity of the material is high , the construction performance is poor, and the construction efficiency is very low; (4) thick coating construction is easy to sag; (5) the damping temperature range of the material is narrow, and the composite loss factor η is still low. It is 0.2~0.35, which cannot meet the vibration and noise reduction requirements of large ships when sailing at high speed

Method used

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  • Special composite damping coating for ships and warships and preparation method thereof
  • Special composite damping coating for ships and warships and preparation method thereof
  • Special composite damping coating for ships and warships and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A special composite damping coating for ships, comprising a damping layer and a constraint layer, the damping layer is a two-component solvent-free polyurethane coating, and the damping layer includes the following raw materials in parts by weight:

[0044] Component A: isocyanate prepolymer synthesized from polyisocyanate and polymer polyol;

[0045]The —NCO content of the isocyanate prepolymer is 2.0-5.0%, and the polyisocyanate is polymethylene polyphenyl polyisocyanate (PAPI), toluene diisocyanate (TDI), diphenylmethane diisocyanate (MDI) , 1,6-hexamethylene diisocyanate (HDI), isophorone diisocyanate (IPDI), xylylene diisocyanate (XDI), trimethylhexamethylene diisocyanate (TMDI), formazan One or more of cyclohexyl diisocyanate (HTDI), dicyclohexylmethane diisocyanate (HMDI), tetramethylxylylene diisocyanate (TMXDI), the polymer polyol is polyether polyol, poly One or more of ester diols, and the molecular weight is 400-3000.

[0046] Component B: 100-200 parts of...

Embodiment 2

[0071] (1) Preparation of damping layer

[0072] (a) The preparation method of component A

[0073] Heat 125 parts of MDI to 50°C, add dropwise 963 parts of polyether N210 with a molecular weight of 1000, and keep the above temperature range while stirring; after the dropwise addition, raise the temperature to 80°C, keep the temperature for 2 hours, and lower the temperature to A prepolymer with an NCO content of 2.0% can be obtained at 40°C.

[0074] (b) The preparation method of B component

[0075] Add 100 parts of 1,2-propanediol, 100 parts of 1,6-hexanediol, 10 parts of dispersant, 5 parts of defoamer, and 1.0 part of catalyst into the mixer, and pre-mix for 15 minutes; sequentially add 200 parts of mica powder , 200 parts of glass flakes, 100 parts of iron oxide red, and 12 parts of carbon black were added to the mixer and mixed evenly, and the filler particle size range was 100 mesh.

[0076] When using, according to the weight ratio of component A: component B = 6:1...

Embodiment 3

[0087] (1) Preparation of damping layer

[0088] (a) The preparation method of component A

[0089] Heat 111 parts of IPDI to 60°C, add dropwise 458 parts of polyε-caprolactone diol Placeel220 with a molecular weight of 1500, and keep the above temperature range while stirring; After 3 hours, the temperature was lowered to 50°C to obtain a prepolymer with an NCO content of 4.0%.

[0090] (b) The preparation method of B component

[0091] Add 200 parts of diethylene glycol, 8 parts of dispersant, 2 parts of defoamer, and 1.0 part of catalyst into the mixer, and pre-mix for 20 minutes; sequentially add 200 parts of mica powder, 50 parts of glass flakes, and 150 parts of oxidation Add iron red and 15 parts of phthalocyanine green into the mixer and mix evenly. The filler particle size range is 120 mesh.

[0092] When in use, mix uniformly according to the weight ratio of component A: component B = 7:1.

[0093] (2) Preparation of constrained layer

[0094] (a) Preparation me...

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Abstract

The invention discloses a special composite damping coating for ships and warships and a preparation method thereof. The special composite damping coating comprises a damping layer and a constraint layer, wherein the damping layer refers to a two-component solvent-free polyurethane coating and comprises a first component and a second component; the first component refers to an isocyanate prepolymer synthesized by polyisocyanates and polyol; the second component comprises a chain extender, a dispersing agent, an antifoaming agent, a catalyst, a damping filler and pigments; the constraint layer refers to a two-component solvent-free epoxy resin coating and comprises a component A and a component B; the component A comprises a liquid epoxy resin, a reactive diluent, a dispersing agent, an antifoaming agent, a flame retardant, a thixotropic agent, talcum powder, wollastonite in powder and coarse whiting; and the component B comprises a modified curing agent, an antifoaming agent and a thixotropic agent. The coating adopts a constrained damping structure and is mainly used for reducing structural vibration and noise of naval vessels, the stealth capability, tactical qualities and comfortable capability can be improved, and the material has excellent sound insulation, antiseptic properties and medium resistance.

Description

technical field [0001] The invention relates to the technical field of damping composite materials, in particular to a special composite damping coating for ships and a preparation method thereof. Background technique [0002] Damping material is the use of polymers within the glass transition temperature range, which can effectively convert mechanical energy in the form of vibration and noise into heat energy release, so as to achieve the purpose of reducing amplitude, vibration and noise. Common damping materials mainly include various damping coatings and damping rubber sheets. The advantage of damping coatings is that they are not affected by the shape and flatness of the substrate, and can be applied on the surface of various complex shapes of substrates. The disadvantage is the construction efficiency. lower. The advantage of the damping rubber sheet is that it is convenient for construction, and the construction efficiency is high on the surface of the flat base mate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D7/12C09D163/00C09D5/08
Inventor 王宝柱王伟郭焱宋丹岳长山
Owner QINGDAO AIR NEW MATERIALS
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