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Alternate and laminar composite sound insulation and damping sheet

A technology of damping sheets and alternating layers, which is applied in the field of alternately layered composite sound-insulating damping sheets, can solve the problems of poor vibration and noise reduction, complicated manufacturing technology, and complicated processing technology, and achieve excellent vibration and noise reduction effect, suppression and noise reduction, and the effect of a simple preparation method

Inactive Publication Date: 2016-11-23
ZHUZHOU TIMES NEW MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above materials are all prepared by simply superimposing the sound insulation layer and the damping layer, and the manufacturing process is complicated and the cost is high
The existing polymer sheets for vibration and noise reduction are difficult to take into account both sound insulation and damping performance, and it is difficult to achieve excellent sound insulation and damping performance on one polymer sheet at the same time, or it is only a simple superposition of sound insulation layer and damping layer Combination, not only the processing technology is complicated, the cost is high, but also the effect of vibration reduction and noise reduction is not good

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Select 100 parts of styrene-butadiene-styrene block copolymer (by weight) as the base material of the sound insulation layer, add 400 parts of barium sulfate, 50 parts of nano-calcium carbonate, and 40 parts of chlorinated paraffin. The polymer-based sound-insulating layer material was obtained by kneading in an internal mixer at 160° C. for 20 minutes, and the weighted average sound insulation volume of the sound-insulating material was 22.5 dB at a thickness of 1.5 mm.

[0027] (2) Select 100 parts of styrene-isoprene-styrene block copolymer (by weight) as the base material of the damping layer, add 100 parts of C5 petroleum resin, 200 parts of 200 mesh mica powder, and 20 parts of chlorinated paraffin Parts were mixed in an internal mixer at 160°C for 20 minutes and discharged to obtain a polymer-based damping layer material. The maximum loss factor of the damping material is 1.06, and the effective damping temperature range (Tanδ≥0.5) is -10°C to 50°C.

[0028]...

Embodiment 2

[0030] (1) Select 100 parts of EPDM rubber and ethylene-vinyl acetate block copolymer mixed at 1:1 (by weight) as the base material of the sound insulation layer, add 400 parts of barium sulfate, 50 parts of nano-calcium carbonate, and 40 parts of dioctyl phthalate, 1 part of stearic acid, and 1 part of p-phenylenediamine anti-aging agent were mixed in an internal mixer at 150°C for 20 minutes, and the polymer-based sound-insulating layer material was obtained by discharging. The sound-insulating material was 1.5 The weighted average insulation volume in mm is 21.8dB.

[0031] (2) Select 100 parts of ethylene-vinyl acetate block copolymer (by weight) as the base material of the damping layer, add 100 parts of acrylic elastomer, 150 parts of 200 mesh mica powder, and 10 parts of dioctyl phthalate, 1 part of p-phenylenediamine anti-aging agent was mixed in an internal mixer at 150°C for 20 minutes, and the material was discharged to obtain a polymer-based damping layer material....

Embodiment 3

[0034](1) Select 100 parts of polyvinyl chloride (by weight) as the base material of the sound insulation layer, add 200 parts of barium sulfate, 50 parts of nano-calcium carbonate, 30 parts of tributyl citrate, and 4 parts of calcium-zinc stabilizer. Mixing, extruding granulation and extruding to prepare the polymer-based sound-insulating layer material, the weighted average sound insulation volume of the sound-insulating material is 23.3dB at 1.5mm.

[0035] (2) Select 100 parts of chlorinated butyl rubber (by weight) as the base material of the damping layer, add 50 parts of petroleum resin, 150 parts of polyisobutylene, 100 parts of mica powder, 20 parts of carbon black, and 1 part of stearic acid in Mix in an internal mixer at 150°C for 20 minutes, and discharge the material to obtain a polymer-based damping layer material. The maximum loss factor of the damping material is 1.12, and the effective damping temperature range (Tanδ≥0.5) is -30°C to 40°C.

[0036] (3) Cut the...

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Abstract

The invention discloses an alternate and laminar composite sound insulation and damping sheet. A sound insulation layer material with a sound insulation property and a damping layer material with a damping property are melted and plasticized, a double-continuous-phase alternate and laminar composite sound insulation and damping material is obtained through repeated alternate and laminar overlapping, the number of alternate layers is 4-1,024, the thickness of each of the sound insulation layer and the damping layer ranges from 0.0001 mm to 10 mm, and micron-grade alternate and laminar composition is realized. The sound insulation and damping sheet is thin and light in mass; with the adoption of a laminar alternate structure, the material has a large quantity of continuous layer interfaces, the damping property of the material is increased, the temperature range of the material is widened, and the structure increases the interlayer acoustic impedance difference and improves the sound insulation effect. The polymer substrate material has excellent sound insulation and damping properties, has good vibration inhibition and noise reduction functions and realizes excellent vibration reduction and noise reduction effects in the wider vibration and noise frequency range. The alternate and laminar composite sound insulation and damping sheet has the characteristics that a preparation method is simple, the production efficiency is high, the production cost is low and construction is convenient.

Description

technical field [0001] The invention relates to the field of polymer processing, in particular to an alternate layered composite sound-insulating and damping sheet. Background technique [0002] With the rapid development of modern science and technology and the continuous improvement of social and material living standards, people's awareness of environmental protection has been continuously strengthened, and higher requirements have been put forward for reducing vibration and noise. Polymer damping material is one of the methods to effectively suppress vibration. It uses the viscoelasticity of polymers to convert mechanical vibration energy into heat energy and dissipate it through the internal friction generated by the movement of molecular chains, so as to achieve the purpose of vibration reduction and noise reduction. . Polymer sound insulation materials mainly achieve the purpose of noise reduction by blocking sound transmission or weakening transmitted sound energy. ...

Claims

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Application Information

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IPC IPC(8): B32B27/06B32B27/18B32B25/08B32B37/02
Inventor 熊昌义胡钊殷凌幸子杨金颜渊巍周磊
Owner ZHUZHOU TIMES NEW MATERIALS TECH