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Sound-isolating noise reduction material

A technology of sound insulation and noise reduction and coupling agent, which is used in the field of sound insulation and noise reduction materials and composite materials, can solve the problems of harmful lead environment and poor sound insulation effect, achieve high sound insulation performance, improve work and Living environment, good effect of softness

Inactive Publication Date: 2005-08-24
SHANGHAI JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But because lead is harmful to the environment, at the same time, the sound insulation effect is not very good

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0008] 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 25 decibels.

[0009] PVC: 30%, tungsten powder: 55%, monoalkoxy tris(dioctylphosphoryloxy) titanate: 5%, dibutyl phthalate: 8%, barium stearate: 1% , lead sulfate tribasic: 1%.

Embodiment 2

[0011] 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 23.7 decibels.

[0012] PVC: 45%, ultrafine barium sulfate: 30%, monoalkoxy tris(dioctylphosphoryloxy) titanate: 10%, dibutyl phthalate: 10%, barium stearate: 3%, lead sulfate tribasic: 2%.

Embodiment 3

[0014] Mix the following components evenly and knead them on an open mill to make a soft sheet of 1 mm. The average sound insulation is about 21.2 decibels (100-1600 Hz).

[0015] PVC: 5%, copper powder: 90%, monoalkoxy tris(dioctylphosphoryloxy) titanate: 1%, dibutyl phthalate: 3%, barium stearate: 0.5% , Tribasic lead sulfate: 0.5%.

[0016] Example one

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PUM

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Abstract

The present invention belogns to the field of high molecular material. The sound-isolating noise reduction material consists of PVC 5-45 wt%, inorganic powder of high-specific weight metal powder and / or inorganic salt powder 30-90 wt%, coupling agent 1-10 wt% and assistant 4-15 wt%. The material of the present invention is soft, sound isolating, fireproof, anticorrosive and non-toxic, and is suitable for use in places and environment requirement strict sound condition. The material with copper powder may have a sound isolating index of 21.2 dB / min at 100-1600 Hz.

Description

technical field [0001] The invention relates to a composite material, in particular to a material 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, 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, not easy to secondary processing and sound insulation treatment of irregular objects. Therefore, its application range is limited. After literature search, it is found that the Japanese patent number is: JP56059857, and the name is: SOUND-INSULATING COMPOSITION (sound-insulating composite material). This patent discloses the preparation of a sound-insulating material. Soft material with certain sound insulation performance. But because l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G10K11/162
Inventor 蔡伟民蔡俊徐菲
Owner SHANGHAI JIAOTONG UNIV
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