CN203449665U - Honeycomb sandwich type composite material noise eliminating plate - Google Patents
Honeycomb sandwich type composite material noise eliminating plate Download PDFInfo
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- CN203449665U CN203449665U CN201320414041.6U CN201320414041U CN203449665U CN 203449665 U CN203449665 U CN 203449665U CN 201320414041 U CN201320414041 U CN 201320414041U CN 203449665 U CN203449665 U CN 203449665U
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Abstract
The utility model relates to a honeycomb sandwich type composite material noise eliminating plate. The noise eliminating plate comprises an upper panel layer, a loading layer, a sandwich layer and a lower panel layer, wherein the upper panel layer is made of a two-dimensional three-way hollow knitting fabric; the length of each oillet of the two-dimensional three-way hollow knitting fabric is 0.5mm-3mm, the distance between the two adjacent oillets is 2mm-5mm, and the thickness of the upper panel layer is 0.5mm-1mm; the loading layer is made of 1-3 layers of plant fibre fabrics, and the thickness of the loading layer is 0.1mm-0.3mm; the side length of a honeycomb blank of the sandwich layer is 1.5mm-5mm, and the thickness of a honeycomb structure is 10mm-30mm; the honeycomb structure is made of a Nomex paper honeycomb, a fiberglass honeycomb or an aluminum honeycomb, the lower panel layer is a composite material panel layer without oillets, and the thickness of the composite material panel layer is 1.5mm-3mm. The honeycomb sandwich type composite material noise eliminating plate provided by the utility model has the advantages that gaps formed among fibre bundles in a spinning composite material can form a regular porous structure type hollow fabric, the hollow fabric presoaking material is obtained through carrying out a mature resin presoaking technology on the regular porous structure type hollow fabric, and then, the honeycomb sandwich type composite material noise eliminating plate capable of realizing the multilevel and multiscale sound absorption and elimination is obtained by loading intrinsic sound absorption on a plant fibre shell fabric.
Description
Technical field
The utility model relates to a kind of honeycomb sandwich composite acoustical panel.
Background technology
Noise pollution is the generally acknowledged environmental problem in the world today, and it is the three major source of pollution of Contemporary Environmental that it and air pollution and water pollute.The important topic that noise control develops in harmony and be badly in need of to solve to become relevant high-tech, environment and mankind.A kind of novel noise-reducing structure is to adopt continuous fiber panel/honeycomb sandwich structure at present, it is characterized in that the hole of regular distribution on the top panel of this muffler plate, and the lower panel symmetrical with it be dense non-porous.The noise-cancelling theory of this muffler plate is, hole by regular distribution on panel enters honeycomb by external acoustic waves Assimilation and conductivity, allow sound wave honeycomb internal reflection, refraction, through and absorb, and no longer by the hole entering, conduct, thus the object of implementation structure noise reduction.
Current common and current perforate technology, or before panel solidifies, with special nail plate, prick and wear panel, make the panel prefabricated component of perforate, then solidify together with honeycomb core and the plane of symmetry thereof, obtain a panel cut out and panel/cellular type core composite muffler plate of another panel densification; Or with special Ni Zhifu drill, carry out mechanical tapping on a panel of curing panel/cellular type core composite, obtain a panel cut out and panel/cellular type core composite muffler plate of another panel densification.The former has guaranteed the continuity of most of corpus fibrosums, does not cut off, but the poor flatness of panel cut out prefabricated component, often there is fiber accumulations phenomenon in Zha Kongchu; And the latter exists the cut-out of continuous fiber, and mechanical tapping efficiency is low, and cost is high, contaminated environment.
Summary of the invention
The purpose of this utility model is the deficiency for existing perforate mode, proposes a kind of novel composite acoustical panel structure.Technical solution of the present utility model is: muffler plate comprises above flaggy, appendix layer, sandwich of layers and flaggy below, flaggy is that 2 dimensions 3 are to hollow out braided fabric above, its eyelet length of side is 0.5mm-3mm, and the distance between adjacent eyelet is 2mm-5mm, above the thickness of flaggy be 0.5mm-1mm; Appendix layer is 1-3 layer vegetable fibre fabric, and thickness is 0.1mm-0.3mm; The honeycomb space length of side of sandwich of layers is 1.5mm-5mm, and honeycomb thickness is 10mm-30mm, and the material of honeycomb comprises Nomex paper honeycomb, glass fibre honeycomb or aluminium honeycomb, below flaggy for not with the composite material face layer of eyelet, thickness is 1.5mm-3mm.
2 described dimension 3 fibers that adopt to hollow out braided fabric comprise carbon fiber, glass fibre, aramid fiber, basalt fibre, string or blend fibre.The utility model adopts ripe knitting skill to prepare 2 dimensions 3 to fabric preparation (Triangle Woven Fabric, TWF), the uniform hexagonal lattice open-celled structure of pattern consolidation.The structural integrity of this fabric and not loose.
The utility model utilizes the gap between fibre bundle in composite material for weaving, particularly closely 2 of braiding ties up the 3 typical hollow-core constructions to fabric, the hollow-out fabric that design forming rule pore space structure distributes; By ripe heat treatment and resin prepreg, obtain easily hollow-out fabric prepreg, the string fabric of appendix intrinsic sound absorption thereon, again by ripe co-curing or concretion technology, or regelate or concretion technology, obtain hollow-out fabric panel/cellular type core structural composite material muffler plate that Multi hiberarchy and multi scale absorbs sound.This techniqueflow has fully been integrated relevant mature technology, realized cheaply design, manufacture and the utilization of technology integrated comprehensive.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation;
Fig. 2 is that the utility model 2 dimensions 3 are to flat fabric (TWF) and pierced pattern schematic diagram thereof.
The specific embodiment
Honeycomb sandwich composite acoustical panel comprises above plate 1, appendix layer 2, laminboard layer 3 and flaggy 4 four parts below.Wherein flaggy 1 is the porous plate that adopts 2 dimension 3 hollow-out fabrics of making to knitting skill to make above, and the eyelet length of side is 0.5mm-3mm, and the distance between adjacent eyelet is that the thickness of flaggy above 2mm-5mm is 0.5mm-1mm.Appendix layer 2 has the string flimsy material prepreg of intrinsic acoustical absorbance properties for 1-3 layer, and gross thickness is controlled at 0.1mm-0, between 3mm.Laminboard layer 3 is honeycomb, the honeycomb hole lattice length of side is 1.5mm-5mm, and honeycomb thickness is 10mm-30mm, and the material of honeycomb comprises Nomex paper honeycomb, glass fibre honeycomb, aluminium honeycomb etc., flaggy 4 is that thickness is 1.5mm-3mm not with the composite material face layer of eyelet below.
Honeycomb sandwich composite acoustical panel, its structure design principle and manufacture method are as follows:
(1) adopt 2 dimensions 3 to manufacture hollow-out fabric to knitting skill, the kind of fiber used and the yarn counts of fiber have no particular limits, by adjusting the width of fibre bundle used and the parameter of braiding arranges, control the eyelet length of side of fabric and the distance between adjacent eyelet.
(2) adopt wet method or hot melt that hollow-out fabric is flooded to a certain amount of thermosetting or thermoplastic resin above-mentioned hollow-out fabric, make hollow-out fabric prepreg.
(3) select 1-3 layer to there is the string flimsy material prepreg of intrinsic acoustical absorbance properties, the resin compatible of its pre-soaked resin and this hollow-out fabric prepreg.
Above-mentioned hollow-out fabric prepreg, string prepreg are placed in order on a surface of the honeycomb having cut, and on another surface of honeycomb lay routine not with the continuous fiber prepreg of eyelet, can place glued membrane at interlayer if desired and increase interfacial adhesion strength, then this cellular sandwich sub-assembly is cured to operation, obtains 2 dimensions 3 to hollow-out fabric/cellular type core structural composite material muffler plate.
Claims (2)
1. a honeycomb sandwich composite muffler plate, it is characterized in that, muffler plate comprises above flaggy, appendix layer, sandwich of layers and flaggy below, flaggy is that 2 dimensions 3 are to hollow out braided fabric above, its eyelet length of side is 0.5mm-3mm, distance between adjacent eyelet is 2mm-5mm, above the thickness of flaggy be 0.5mm-1mm; Appendix layer is 1-3 layer vegetable fibre fabric, and thickness is 0.1mm-0.3mm; The honeycomb space length of side of sandwich of layers is 1.5mm-5mm, and honeycomb thickness is 10mm-30mm, and the material of honeycomb comprises Nomex paper honeycomb, glass fibre honeycomb or aluminium honeycomb, below flaggy for not with the composite material face layer of eyelet, thickness is 1.5mm-3mm.
2. a kind of honeycomb sandwich composite muffler plate according to claim 1, is characterized in that, 2 described dimension 3 fibers that adopt to hollow out braided fabric comprise carbon fiber, glass fibre, aramid fiber, basalt fibre, string or blend fibre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320414041.6U CN203449665U (en) | 2013-07-12 | 2013-07-12 | Honeycomb sandwich type composite material noise eliminating plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320414041.6U CN203449665U (en) | 2013-07-12 | 2013-07-12 | Honeycomb sandwich type composite material noise eliminating plate |
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| Publication Number | Publication Date |
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| CN203449665U true CN203449665U (en) | 2014-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320414041.6U Expired - Lifetime CN203449665U (en) | 2013-07-12 | 2013-07-12 | Honeycomb sandwich type composite material noise eliminating plate |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105662708A (en) * | 2016-02-24 | 2016-06-15 | 深圳市浪尖设计有限公司 | Shock wave-preventing earmuff filling structure |
| CN105835483A (en) * | 2016-04-18 | 2016-08-10 | 重庆市皓邦工业有限公司 | Manufacture method of high-intensity and lightweight paper honeycomb composite board for vehicles |
| CN105882016A (en) * | 2016-04-18 | 2016-08-24 | 重庆市皓邦工业有限公司 | Aramid paper honeycomb sandwich composite structure with high strength and light weight |
| CN108973250A (en) * | 2018-07-18 | 2018-12-11 | 吉林大学 | A kind of fiber-reinforced resin honeycomb sandwich structure composite material and preparation method |
-
2013
- 2013-07-12 CN CN201320414041.6U patent/CN203449665U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105662708A (en) * | 2016-02-24 | 2016-06-15 | 深圳市浪尖设计有限公司 | Shock wave-preventing earmuff filling structure |
| CN105835483A (en) * | 2016-04-18 | 2016-08-10 | 重庆市皓邦工业有限公司 | Manufacture method of high-intensity and lightweight paper honeycomb composite board for vehicles |
| CN105882016A (en) * | 2016-04-18 | 2016-08-24 | 重庆市皓邦工业有限公司 | Aramid paper honeycomb sandwich composite structure with high strength and light weight |
| CN105835483B (en) * | 2016-04-18 | 2018-02-09 | 重庆市皓邦工业有限公司 | The preparation method of high-strength vehicle lightweight honeycomb composite cardboard |
| CN105882016B (en) * | 2016-04-18 | 2018-02-09 | 重庆市皓邦工业有限公司 | High intensity light-type aramid paper cellular sandwich composite construction |
| CN108973250A (en) * | 2018-07-18 | 2018-12-11 | 吉林大学 | A kind of fiber-reinforced resin honeycomb sandwich structure composite material and preparation method |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140226 |