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Soft superhigh specific gravity composite materials for acoustic insulation and noise elimination

A composite material, sound insulation and noise reduction technology, applied in the field of composite materials and soft ultra-high specific gravity composite materials, can solve the problems of harmful lead environment and insufficient sound insulation effect, achieve good mechanical properties, improve working and living environment, Noise reduction effect

Inactive Publication Date: 2004-11-17
SHANGHAI JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But lead is bad for the environment, and the sound insulation is not enough

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] The components are uniformly mixed in the following proportions, and kneaded on an open mill to make a soft sheet of 1 mm, with an average sound insulation of about 21.6 decibels and a hardness of 86 (Shore).

[0010] High molecular polymer: 30% (polystyrene: 15%, nitrile rubber: 15%), tungsten powder (0.1 micron): 55%, monoalkoxy tris(dioctylphosphoryloxy) titanate : 5%, dibutyl phthalate: 8%, barium stearate: 1%, lead sulfate tribasic: 1%.

Embodiment 2

[0012] Mix the components uniformly in the following proportions, and knead on an open mill to make a soft sheet of 1 mm, with a sound insulation of 18-27 decibels (100-1600Hz) and a hardness of 88 (Shore ).

[0013] PVC: 15%, tungsten powder (60 microns): 80%, isopropyl tricarboxy titanate: 1%, dibutyl phthalate: 3%, barium stearate: 0.5%, tribasic sulfuric acid Lead: 0.5%.

Embodiment 3

[0015] The components are uniformly mixed in the following proportions, and kneaded on an open mill to make a soft sheet of 1 mm. The average sound insulation is about 22 decibels, and it has good anti-aging ability.

[0016] High molecular polymer: 30% (polyethylene: 21%, nitrile rubber: 9%), tungsten powder (2 microns): 55%, monoalkoxy tris (dioctylphosphoryloxy) titanate: 5%, Dibutyl Phthalate: 8%, Barium Stearate: 1%, Lead Sulfate Tribasic: 1%.

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PUM

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Abstract

A soft composition with ultrahigh specific weight for isolating sound and reducing noise contains high-molecular polymer (5-30 wt.%), tungsten powder (10-90), plasticizer (3-10), stabilizer (1-5) and coupling agent (1-10). Its advnatages are high sound isolating and mechanical performance, high resistance to fire and chemical corrosion, no poison and high machinability.

Description

technical field [0001] The invention relates to a composite material, especially a soft ultra-high specific gravity composite material that can be used for sound insulation and noise reduction, and belongs to the field of polymer materials. Background technique [0002] The development and application of sound insulation materials has a history of decades, but the sound insulation materials commonly used in the market currently have some shortcomings, such as: high product cost, mostly hard materials that are not easy to reprocess and difficult to apply It is suitable for sound insulation treatment of irregular objects, etc. Its range of application is thus limited. As we all know, the sound insulation of materials obeys the mass law: TL=20lgm+20lgf-43dB, where: TL-sound insulation under the condition of vertical incidence of sound waves, dB; m-area density of materials, kg / m 2 ; f-frequency of incident sound wave, Hz. When the mass per unit area of ​​the material doubles...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K3/08
CPCC08K3/08C08K2003/0887
Inventor 蔡伟民蔡俊徐菲
Owner SHANGHAI JIAOTONG UNIV
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