CN105131485A - Foamed aluminum and viscoelastic damping composite material and preparation method - Google Patents
Foamed aluminum and viscoelastic damping composite material and preparation method Download PDFInfo
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- CN105131485A CN105131485A CN201510593808.XA CN201510593808A CN105131485A CN 105131485 A CN105131485 A CN 105131485A CN 201510593808 A CN201510593808 A CN 201510593808A CN 105131485 A CN105131485 A CN 105131485A
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Abstract
The invention provides a foamed aluminum and viscoelastic damping composite material and a preparation method. The preparation method comprises the following steps: an emulsion or a premixed solution of a viscoelastic damping material is put into a mold; pored foamed aluminum is totally or partially immersed in the emulsion or a premixed solution of the viscoelastic damping material to ensure that the viscoelastic damping material can totally or partially permeate into inner pores in pored foamed aluminum in a dispersively embedded manner; after curing, the composite material adopting the structure that the pores in pored foamed aluminum are filled with the viscoelastic damping material is formed. The composite material has the advantages that pored foamed aluminum is adopted for a compositing process, so that the viscoelastic damping material can be sufficiently immersed in the interior of foamed aluminum, foamed aluminum and viscoelastic damping material composite layers as well as foamed aluminum and viscoelastic damping material combined layers are formed in a composite structure, the effect of vibration reduction can be better, the characteristics of both light weight and high damping are realized, and the mechanical property is excellent; the composite material is suitable for being laid on a floor, a cabin, a wallboard, the external surface of a machine and the like, and can be directly utilized in a supporting structure requiring low strength.
Description
Technical field
What the present invention relates to is a kind of damping noise reduction material, specifically a kind of composite shock-absorbing acoustic damping materials be made up of foamed aluminium and viscoelastic damping material.The present invention also relates to a kind of preparation method of damping noise reduction material.
Background technology
In modern society, damping noise reduction becomes a problem more and more needing to pay attention to, and the vibration & noise level of engineering goods and engineering design has become one of major criterion of modern product inner quality.Damping shock-absorbing noise-reducing technology can improve vibration resistance and the stability of various kinds of equipment and engineering structure, also can effectively reduce the sound pollution of environment.
Foamed aluminium is a kind of a kind of foamed metal with empty structure obtained through special foam process process by pure aluminum or aluminum alloy, due to the loose pore space structure that it is special, make it have the features such as density is little, quality is light, specific surface is large, and in such as sound absorption, sound insulation, damping, damping, energy-absorbing, electromagnetic shielding etc. are many, there is unique performance.But its modulus of independent foamed aluminium and intensity lower, and relative to viscoelastic damping material, its damping capacity is also excellent not.
Viscoelastic damping material had a wide range of applications in the field of damping noise reduction in various needs, and its damping capacity is excellent, has higher damping factor and out-of-phase modulus, but Young's modulus own and mechanical property poor.Meanwhile, free damping material has the construction advantage such as simple, but its effect relative deficiency compared with constrained damping structure, and constrained damping structure often selects sheet metal as restraint layer, adds the weight of global design.
Application number is disclose one " preparation method of epoxy resin and closed-cell foam aluminum composite " in the patent document of 201210557431.9, wherein be referred to a kind of epoxy resin-foamed aluminium composite structure, in the structure shown here, employ epoxy resin and closed-cell aluminum foam carries out compound, and additional processing is carried out to foamed aluminium surface.This technical scheme unitary side overweights the improvement of the energy-absorbing directional performance of matrix material, and do not consider vibration damping, the noise reduction problem of material.
Summary of the invention
The object of the present invention is to provide and a kind ofly have the high feature of lightweight, damping concurrently, there is foamed aluminium and the viscoelastic damping matrix material of excellent mechanical property simultaneously.The present invention also aims to the preparation method that a kind of foamed aluminium and viscoelastic damping matrix material are provided.
Foamed aluminium of the present invention and viscoelastic damping matrix material be Open-cell Aluminum Foam is immersed or part immerse viscoelastic damping material emulsion or premixed liquid in, viscoelastic damping material is infiltrated in the mode that disperse embeds or partly penetrates in the internal void of Open-cell Aluminum Foam, the foamed aluminium formed and viscoelastic damping matrix material.
Foamed aluminium of the present invention and viscoelastic damping matrix material can also comprise:
1, the part by weight that Open-cell Aluminum Foam accounts for is: 25 ~ 75%.
2, viscoelastic damping material is made up of macromolecule resin and filler, and described macromolecule resin is one or more in polyacrylic acid, urethane, polyacrylic ester, Vinyl Acetate Copolymer, polymeric amide, polyureas.
The preparation method of foamed aluminium of the present invention and viscoelastic damping matrix material is:
The emulsion of viscoelastic damping material or premixed liquid are put into mould, by in Open-cell Aluminum Foam immersion or the emulsion partly immersing viscoelastic damping material or premixed liquid, viscoelastic damping material infiltrated in the mode that disperse embeds or partly penetrates in the internal void of Open-cell Aluminum Foam, after solidification, forming the matrix material that viscoelastic damping material is filled in Open-cell Aluminum Foam space.
The preparation method of foamed aluminium of the present invention and viscoelastic damping matrix material can also comprise:
1, first carry out pre-treatment to Open-cell Aluminum Foam, described pre-treatment is by Open-cell Aluminum Foam acetone, ethanol or xylene soak, puts into hermetically drying case inner drying.
2, by the emulsion of multilayer Open-cell Aluminum Foam immersion viscoelastic damping material or premixed liquid, between each layer open celled foam aluminium lamination, space is had.
3, multilayer viscoelastic damping material is filled in the matrix material bonding one-tenth multilayer Viscoelastic Damped Structures in Open-cell Aluminum Foam space.
4, matrix material multilayer viscoelastic damping material being filled in Open-cell Aluminum Foam space is pressed into multilayer Viscoelastic Damped Structures.
The damping material that the present invention is composited by foamed aluminium and viscoelastic damping material, has the feature that lightweight, damping are high concurrently, has excellent mechanical property simultaneously.With application number for compared with technical scheme disclosed in the patent document of 201210557431.9.Matrix material of the present invention is intended applying in the direction of vibration damping, noise reduction, and preferred viscoelastic damping material and Open-cell Aluminum Foam carry out the preparation of matrix material, and what utilize emphatically is the special pore space in Open-cell Aluminum Foam inside.
The present invention, by selecting the combination of viscoelastic damping material not of the same race or multiple viscoelastic damping material, can obtain the foamed aluminium/viscoelastic damping matrix material being applicable to different temperature range interval between-30 ~ 80 DEG C.Compound is carried out owing to adopting Open-cell Aluminum Foam, viscoelastic damping material is made can fully to immerse foamed aluminium inside, define composite bed and the combination layer of foamed aluminium and viscoelastic damping material in composite structure, experiment proves that this composite bed can play better effect to vibration damping.Meanwhile, this preparation technology according to design requirements, can prepare multilayer complex construction, makes the performance of viscoelastic damping material and foamed aluminium obtain best embodiment.
The present invention is applicable to the field needing damping noise reduction, as be layed in floor, cabin, wallboard, mechanical outer wall first-class, also can be directly used in the not high underwork of requirement of strength; Experimental data shows, this composite structure also has unusual effect in/sound absorption.
Accompanying drawing explanation
Fig. 1 is composite structure figure described in specific embodiment 1.
Fig. 2 is composite structure figure described in specific embodiment 2.
Fig. 3 is composite structure figure described in specific embodiment 3.
Fig. 4 is composite structure figure described in specific embodiment 4.
Fig. 5 is composite structure figure described in specific embodiment 5.
Fig. 6 is the typical case's photo in kind prepared according to preparation method of the present invention.
Embodiment
The emulsion of viscoelastic damping material or premixed liquid are put into mould by the present invention, Open-cell Aluminum Foam is immersed or partly immerses in viscoelastic damping material liquid, viscoelastic damping material is infiltrated in the mode that disperse embeds or partly penetrates in the internal void of Open-cell Aluminum Foam, damping material can be filled foamed aluminium space after hardening, forms the filled composite materials of viscoelastic damping material and foamed aluminium.This patent carries out the compound of two or more materials due to the mode employing disperse embedding, can prepare the composite structure of multiple multilayer.This structure can utilize foamed aluminium skeleton, plays constraint and increases the effect of energy internal friction, and improve the mechanical property of viscoelastic damping material to viscoelastic damping material.Meanwhile, foamed aluminium effectively inhales/soundproof material as one, can play noise reduction.
Described viscoelastic damping material, be made up of macromolecule resin and filler, wherein the kind of macromolecule resin can be one or more formations in polyacrylic acid, urethane, polyacrylic ester, Vinyl Acetate Copolymer, polymeric amide, polyureas, and commercially available existing viscoelastic damping material also can be used as the viscoelastic damping material of Baryskin, Sika, Ai Er Jia Jiadeng company.
Main performing step of the present invention comprises:
1. the organic solvents such as foamed aluminium acetone, ethanol, dimethylbenzene soaked, clean and remove its surface and oil contaminant, put into hermetically drying case inner drying;
2. viscoelastic damping material emulsion or mixed solution are poured in mould, according to demand foamed aluminium embedded mould and immerse certain depth in viscoelastic damping material;
3. according to demand, multi-layered foamed aluminium can be embedded in mould in the 2nd step program, between foamed aluminium and foamed aluminium layer, a fixed gap can be had;
4. place at normal temperatures and treat that viscoelastic damping material solidifies completely, obtained foamed aluminium/viscoelastic damping matrix material;
5. according to demand, 2nd ~ 4 step programs can be repeated or use other modes such as brushing, by above-mentioned foamed aluminium/viscoelastic damping matrix material and the further compound of viscoelastic damping material not of the same race, obtained multilayer Viscoelastic Damped Structures.
6. according to demand, can by foamed aluminium/viscoelastic damping matrix material obtained for 4th ~ 5 steps further compound under stress, interlayer is bonding with identical or different viscoelastic damping material.
In order to understand the present invention better, illustrating below is described in more detail the present invention.
Embodiment 1
Foamed aluminium is prepared into the square of 400mm*400mm*20mm, cleans with acetone and to be placed in vacuum drying oven for subsequent use.Get BaryskinV61 model viscoelastic damping material, after carrying out hybrid modulation in product requirement ratio, premixed liquid is poured in mould.Being embedded by foregoing foams aluminium in mould and to make foamed aluminium be about 3-5mm apart from mold bottom, whole plate immerses about 10mm in premixed liquid.Mould is solidified under room temperature is placed in dry environment.After damping material has solidified completely, obtain foamed aluminium/viscoelastic damping matrix material.
Embodiment 2
Foamed aluminium is prepared into the square of 400mm*400mm*10mm, cleans with acetone and to be placed in vacuum drying oven for subsequent use.Get SikaPU-RED model viscoelastic damping material, after carrying out hybrid modulation in product requirement ratio, premixed liquid is poured in mould.Foregoing foams aluminium to be embedded in mould and foamed aluminium is immersed in premixed liquid completely and be about 2mm apart from liquid level.Mould is solidified under room temperature is placed in dry environment.Foamed aluminium/viscoelastic composite damping material after solidifying two pieces is stacked, is incorporated in pressure lamination applying 0.1MPa again therebetween with SikaPU-RED model viscoelastic damping material.After damping material has solidified completely, obtained multi-layered foamed aluminium/viscoelastic composite damping material.
Embodiment 3
Foamed aluminium is prepared into the square of 400mm*400mm*10mm, cleans with acetone and to be placed in vacuum drying oven for subsequent use.Get BaryskinV607 model viscoelastic damping material, after carrying out hybrid modulation in product requirement ratio, premixed liquid is poured in mould.Foregoing foams aluminium is embedded in mould, makes foamed aluminium immerse about 5mm in premixed liquid.Mould is solidified under room temperature is placed in dry environment.After damping material has solidified completely, obtain foamed aluminium/viscoelastic damping matrix material.Be placed in cured at room temperature at the thick Air++3101 model viscoelastic damping material of viscoelastic damping material surface recombination one deck 2mm of this matrix material.After damping material has solidified completely, obtain foamed aluminium/multilayer viscoelastic damping matrix material.
Embodiment 4
Foamed aluminium is prepared into the square of 400mm*400mm*10mm, cleans with acetone and to be placed in vacuum drying oven for subsequent use.Get BaryskinV607 model viscoelastic damping material, carry out hybrid modulation in product requirement ratio; Get BaryskinV60 model viscoelastic damping material, after carrying out hybrid modulation in this product requirement ratio, two parts of premixed liquids are fully mixed in the ratio of 1:1, pours in mould.Foregoing foams aluminium to be embedded in mould and foamed aluminium is immersed in premixed liquid completely, being about 1-2mm apart from mold bottom.Mould is solidified under room temperature is placed in dry environment.After damping material has solidified completely, obtain foamed aluminium/viscoelastic damping matrix material.
Embodiment 5
Foamed aluminium is prepared into the square of 400mm*400mm*10mm, cleans with acetone and to be placed in vacuum drying oven for subsequent use.Get BaryskinV607 model viscoelastic damping material, after carrying out hybrid modulation in this product requirement ratio, premixed liquid is poured in mould.Foregoing foams aluminium to be embedded in mould and to immerse about 5mm in premixed liquid.Mould is solidified under room temperature is placed in dry environment.After damping material has solidified completely, obtain foamed aluminium/viscoelastic damping matrix material.Get SikaPU-RED model viscoelastic damping material, after carrying out hybrid modulation in this product requirement ratio, premixed liquid is poured in mould, foregoing foams aluminium/viscoelastic matrix material to be embedded in mould and to immerse about 8mm in premixed liquid.Mould is solidified under room temperature is placed in dry environment.After damping material has solidified completely, obtain foamed aluminium/multilayer viscoelastic damping matrix material.
Claims (8)
1. a foamed aluminium and viscoelastic damping matrix material, it is characterized in that: be in the emulsion or premixed liquid that viscoelastic damping material is immersed in Open-cell Aluminum Foam immersion or part, viscoelastic damping material is infiltrated in the mode that disperse embeds or partly penetrates in the internal void of Open-cell Aluminum Foam, the foamed aluminium formed and viscoelastic damping matrix material.
2. foamed aluminium according to claim 1 and viscoelastic damping matrix material, is characterized in that: the part by weight that Open-cell Aluminum Foam accounts for is: 25 ~ 75%.
3. foamed aluminium according to claim 1 and 2 and viscoelastic damping matrix material, it is characterized in that: viscoelastic damping material is made up of macromolecule resin and filler, described macromolecule resin is one or more in polyacrylic acid, urethane, polyacrylic ester, Vinyl Acetate Copolymer, polymeric amide, polyureas.
4. the preparation method of a foamed aluminium and viscoelastic damping matrix material, it is characterized in that: the emulsion of viscoelastic damping material or premixed liquid are put into mould, by in Open-cell Aluminum Foam immersion or the emulsion partly immersing viscoelastic damping material or premixed liquid, viscoelastic damping material infiltrated in the mode that disperse embeds or partly penetrates in the internal void of Open-cell Aluminum Foam, after solidification, forming the matrix material that viscoelastic damping material is filled in Open-cell Aluminum Foam space.
5. the preparation method of foamed aluminium according to claim 4 and viscoelastic damping matrix material, it is characterized in that: first pre-treatment is carried out to Open-cell Aluminum Foam, described pre-treatment is by Open-cell Aluminum Foam acetone, ethanol or xylene soak, puts into hermetically drying case inner drying.
6. the preparation method of the foamed aluminium according to claim 4 or 5 and viscoelastic damping matrix material, is characterized in that: by the emulsion of multilayer Open-cell Aluminum Foam immersion viscoelastic damping material or premixed liquid, have space between each layer open celled foam aluminium lamination.
7. the preparation method of the foamed aluminium according to claim 4 or 5 and viscoelastic damping matrix material, is characterized in that: matrix material bonding one-tenth multilayer Viscoelastic Damped Structures multilayer viscoelastic damping material being filled in Open-cell Aluminum Foam space.
8. the preparation method of the foamed aluminium according to claim 4 or 5 and viscoelastic damping matrix material, is characterized in that: matrix material multilayer viscoelastic damping material being filled in Open-cell Aluminum Foam space is pressed into multilayer Viscoelastic Damped Structures.
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| CN201510593808.XA CN105131485A (en) | 2015-09-17 | 2015-09-17 | Foamed aluminum and viscoelastic damping composite material and preparation method |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105648363A (en) * | 2016-01-20 | 2016-06-08 | 浙江农业商贸职业学院 | Light-weight composite material for automobile |
| CN106893261A (en) * | 2017-02-13 | 2017-06-27 | 中国船舶重工集团公司第七二五研究所 | A kind of high-strength light porous metals composite damping material and preparation method thereof |
| CN107099707A (en) * | 2017-05-27 | 2017-08-29 | 牛永涛 | A kind of automotive light weight technology shell body Al alloy composite and preparation method thereof |
| CN109575573A (en) * | 2019-01-11 | 2019-04-05 | 时涛 | A kind of preparation method for the foamed aluminium composite material being used to prepare automobile buffer beam |
| CN111674126A (en) * | 2020-05-25 | 2020-09-18 | 中国恩菲工程技术有限公司 | Novel acid-resistant anti-seepage elastic isolation material, preparation method and application |
| CN111696506A (en) * | 2020-06-01 | 2020-09-22 | 西安交通大学 | Damping material filled open-cell foam metal type underwater sound absorption composite structure |
| CN112276091A (en) * | 2020-10-29 | 2021-01-29 | 西北有色金属研究院 | Preparation process of low-cost titanium-based porous material with high energy absorption characteristic |
| CN114686089A (en) * | 2022-03-22 | 2022-07-01 | 中国船舶重工集团公司第七一三研究所 | Marine impact-resistant foamed aluminum-based composite board and preparation method thereof |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105648363A (en) * | 2016-01-20 | 2016-06-08 | 浙江农业商贸职业学院 | Light-weight composite material for automobile |
| CN106893261A (en) * | 2017-02-13 | 2017-06-27 | 中国船舶重工集团公司第七二五研究所 | A kind of high-strength light porous metals composite damping material and preparation method thereof |
| CN107099707A (en) * | 2017-05-27 | 2017-08-29 | 牛永涛 | A kind of automotive light weight technology shell body Al alloy composite and preparation method thereof |
| CN109575573A (en) * | 2019-01-11 | 2019-04-05 | 时涛 | A kind of preparation method for the foamed aluminium composite material being used to prepare automobile buffer beam |
| CN111674126A (en) * | 2020-05-25 | 2020-09-18 | 中国恩菲工程技术有限公司 | Novel acid-resistant anti-seepage elastic isolation material, preparation method and application |
| CN111696506A (en) * | 2020-06-01 | 2020-09-22 | 西安交通大学 | Damping material filled open-cell foam metal type underwater sound absorption composite structure |
| CN111696506B (en) * | 2020-06-01 | 2023-03-28 | 西安交通大学 | Damping material filled open-cell foam metal type underwater sound absorption composite structure |
| CN112276091A (en) * | 2020-10-29 | 2021-01-29 | 西北有色金属研究院 | Preparation process of low-cost titanium-based porous material with high energy absorption characteristic |
| CN112276091B (en) * | 2020-10-29 | 2022-01-28 | 西北有色金属研究院 | Preparation process of low-cost titanium-based porous material with high energy absorption characteristic |
| CN114686089A (en) * | 2022-03-22 | 2022-07-01 | 中国船舶重工集团公司第七一三研究所 | Marine impact-resistant foamed aluminum-based composite board and preparation method thereof |
| CN114686089B (en) * | 2022-03-22 | 2023-02-03 | 中国船舶重工集团公司第七一三研究所 | Marine impact-resistant foamed aluminum-based composite board and preparation method thereof |
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