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High specific weight soundproof composite material

A composite material and high specific gravity technology, applied in the direction of sound insulation, insulation layer, building components, etc., can solve problems such as difficult to make thin films, achieve softness, improve working and living environment, and good constructability

Inactive Publication Date: 2003-06-18
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to its composition (fiber and binder), the material can only be molded by injection molding or compression molding, so it is difficult to make a large-area film

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0007] The components are uniformly mixed in the following proportions, and kneaded on an open mill to make a soft sheet of 1 mm, and the average sound insulation is about 23 decibels.

[0008] PVC: 35%, tungsten powder (2 microns): 40%, monoalkoxy tris(dioctylphosphoryloxy) titanate: 10%, dibutyl phthalate: 10%, stearic acid Barium: 2%, lead sulfate tribasic: 3%.

Embodiment 2

[0010] Mix the following components evenly and knead on an open mill to make a soft sheet of 1 mm, and the sound insulation is between 18 and 27 decibels (100 to 600 Hz).

[0011] PVC: 15%, tungsten powder (25 microns): 80%, isopropyl tricarboxy titanate: 1%, dibutyl phthalate: 3%, barium stearate: 0.5%. Lead sulfate tribasic: 0.5%.

Embodiment 3

[0013] Take PVC: 5%, tungsten powder (60 microns): 90%, monoalkoxy tris(dioctylphosphoryloxy) titanate: 1%, dibutyl phthalate: 2%, stearin Barium acid: 1%, tribasic lead sulfate: 1%, processed into 1mm thin plate, can become a sound insulation material with a sound insulation capacity of 21 decibels.

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Abstract

A sound-isolating composition with high specific weight contains PVC (5-35 wt.%), tungsten powder (40-90), coupling agent (1-10) and assistant (4-15). Its advantages are high softeness and effect on reducing noise by 20-25 db, high resistance to fire and chemical corrosion, no poison and high machinability.

Description

technical field [0001] The invention relates to a composite material, in particular to a high specific gravity sound insulation composite material, which belongs to the field of polymer materials. Background technique [0002] The development and application of sound insulation materials has a history of decades, and a relatively mature development and production system has been formed. However, the sound insulation materials commonly used in the market currently have some shortcomings such as high product costs and mostly hard materials. material, so it is not easy for secondary processing and difficult for sound insulation treatment of irregular objects. Its application is therefore limited. After literature search, it is found that the Chinese patent number is: 97197487.X, and the patent name is: high-density composite material, which discloses a high-density composite material. Tungsten powder is combined to create a material that can be used as a lead substitute (as a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K5/56C08L27/06E04B1/82
Inventor 蔡伟民蔡俊徐菲
Owner SHANGHAI JIAO TONG UNIV
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