CN1181131C - Shielded incident acoustic wave material - Google Patents
Shielded incident acoustic wave material Download PDFInfo
- Publication number
- CN1181131C CN1181131C CNB021577846A CN02157784A CN1181131C CN 1181131 C CN1181131 C CN 1181131C CN B021577846 A CNB021577846 A CN B021577846A CN 02157784 A CN02157784 A CN 02157784A CN 1181131 C CN1181131 C CN 1181131C
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- Prior art keywords
- acoustic wave
- present
- incident acoustic
- sound insulation
- agent
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The present invention relates to a material for shielding incidence sound waves, which belongs to the field of high molecular materials. The present invention contains the following constituents by weight percentage: 5% to 60% of PVC, 10% to 90% of tungsten powder of which the particle diameter is less than two micrometers, and 5% to 30% of additives. The present invention has good mechanical performance and sound insulation performance and has the characteristics of flame retardancy, chemical medium prevention, corrosion prevention, no poison, good constructability, etc. When the thickness of the material is 1mm, the average sound insulation index of the material can reach 22.7 decibels (100Hz to 1600HZ).
Description
Technical field
What the present invention relates to is a kind of sound insulation composite material, and particularly a kind of material that shields incident acoustic wave belongs to polymeric material field.
Background technology
About the development of soundproof material and the history of using existing decades, the development and the production system of comparative maturity have been formed, but normally used in the market soundproof material all exists some shortcomings as the product cost height, mostly be mechanically resistant material, be difficult for secondary processing and be difficult to irregularly shaped object insulated against sound handling etc., so its range of application has certain limitation.Find by literature search, China Patent No. is: 97197487.X, patent name is: high density composite, announced a kind of high density composite, this patent the tungsten powder combination of 2～40 microns of the fiber that improves intensity and diameters, is made a kind of material (as projectile core equivalent material nontoxic, unleaded, environmentally safe, that save money) that can be used as plumbous substitute by binding agent.Its material composition is tungsten powder and fiber and caking agent, by injection moulding, compression molding, is used to be sought after the occasion that plumbous high-density does not wish to have Lead contamination again, and as the substitute of leaded high density material.But this material since its composition (fiber and caking agent) only determined can be with injection moulding or compression molding, so difficulty is made large-area film.
Summary of the invention
The objective of the invention is to overcome deficiency of the prior art, a kind of material that shields incident acoustic wave is provided, make it have good screening ability incident acoustic wave.The present invention is achieved by the following technical solutions, and each component of the present invention and weight percent content thereof are: PVC:5%～60%, particle diameter are less than 2 microns tungsten powder: 10%～90%, and auxiliary agent: 5%～30%; By mixing after injection moulding, mold pressing or calendering and moulding.
The diameter of tungsten powder is preferably 0.1～1.8 micron, one or more in the common stablizer of selection of auxiliary, coupling agent, softening agent and the antiaging agent.
The present invention has substantive distinguishing features and marked improvement, the present invention is except that having soft and sound insulation property, but also have characteristics such as fire-retardant, anti-chemical medium, protection against corrosion, nontoxic application property, be suitable for doing the soundproof material at city aerial conveyor traffic, aviation and harbour, and the sound insulation of building trade Light trabs interlayer is handled, use this kind sound insulation composite material can reduce noise effectively, improvement work and living environment, when material thickness was 1mm, its average sound reduction index can reach 22.7 decibel (100～1600Hz).
Embodiment
Provide following examples in conjunction with content of the present invention:
Embodiment one
Taking by weighing weight percent and be the tungsten powder that 30% polyvinyl chloride resin and 55% particle diameter be 0.6 micron stirs, add 15% various auxiliary agents simultaneously, plastify mixingly then, send in the rolling press after becoming plastifying material, dancer rools distance as required can obtain the sheet material of different thickness.If be pressed into the material that thickness is 1mm, its every material property is as follows:
| Material property | Observed value | |
| Density (kg/m 3) | 3.5 | |
| Tensile strength (kg/cm 2) | Vertically | 112 |
| Laterally | 75 | |
| Elongation % | Vertically | 157 |
| Laterally | 132 | |
| Sound reduction index (decibel) | 22.7 | |
| Flame retardancy (oxygen index) | 27 | |
Embodiment two
It is mixing in mill that following component is mixed the back, makes 1 millimeter soft thin slice, and its oise insulation factor is between 18 ~ 30 decibels (100 ~ 1600Hz).
PVC:5%, tungsten powder (1.8 microns): 90%, sec.-propyl three carboxyl titanic acid ester: 2%, dibutyl phthalate: 2%, barium stearate: 0.5%, lead sulfate tribasic: 0.5%.
Embodiment three
Get PVC:60%, tungsten powder (0.2 micron): 10%, sec.-propyl three carboxyl titanic acid ester: 15%, dibutyl phthalate: 9%, barium stearate: 2%, lead sulfate tribasic: 4%, can obtain sound reduction index after the processing and be 26.2 decibels sound insulation, damping material.
Claims (2)
1, a kind of material that shields incident acoustic wave, it is characterized in that: each component and weight percent content thereof are: PVC:5%～60%, particle diameter are less than 2 microns tungsten powder: 10%～90%, auxiliary agent: 5%～30%.
2, the material of this shielding incident acoustic wave according to claim 1 is characterized in that described auxiliary agent, is to select in stablizer, coupling agent, softening agent and the antiaging agent one or more for use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021577846A CN1181131C (en) | 2002-12-26 | 2002-12-26 | Shielded incident acoustic wave material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021577846A CN1181131C (en) | 2002-12-26 | 2002-12-26 | Shielded incident acoustic wave material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1424352A CN1424352A (en) | 2003-06-18 |
| CN1181131C true CN1181131C (en) | 2004-12-22 |
Family
ID=4752999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021577846A Expired - Fee Related CN1181131C (en) | 2002-12-26 | 2002-12-26 | Shielded incident acoustic wave material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1181131C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1741127B (en) * | 2005-08-25 | 2010-05-12 | 上海交通大学 | Reciprocating vibration energy-dissipation acoustic structure |
| CN102585330A (en) * | 2012-01-18 | 2012-07-18 | 厦门虹鹭钨钼工业有限公司 | Tungsten-polymer composite material and preparation method thereof |
-
2002
- 2002-12-26 CN CNB021577846A patent/CN1181131C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1424352A (en) | 2003-06-18 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |