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Acoustic damping composite material and preparation method thereof

A composite material and noise reduction technology, applied in the field of materials, can solve problems such as poor sound absorption effect, and achieve the effect of good elasticity, improved mechanical properties and good physical properties

Inactive Publication Date: 2019-02-15
李明珠
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of this, the purpose of the present invention is to address the deficiencies of the prior art, provide a noise-reducing composite material and its preparation method, and solve the problem of poor sound-absorbing effect of existing sound-absorbing and noise-reducing materials

Method used

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Embodiment 1

[0022] A noise reduction composite material, consisting of the following raw materials in parts by weight: 15 parts of textile fibers, 10 parts of mixed sol, 1 part of surfactant; 20 parts of thermoplastic polyurethane, 10 parts of melamine, 5 parts of lignocellulose, and 4 parts of white carbon black 1 part, 1 part of carbon nanotube, 1 part of acetyl tributyl citrate, 1 part of boron nitride, 1 part of hydroxypropyl starch, 1 part of glycerin and 8 parts of n-octane; the mixed sol includes that the composite sol is silicon 15 parts of sol, 25 parts of aluminum sol, 25 parts of zirconium sol and 30 parts of titanium sol, wherein the solid content is greater than 25%; the surfactant is aqueous sodium bicarbonate solution with a mass fraction of 5%.

[0023] The present invention also provides the preparation method of the noise reduction composite material as follows:

[0024] 1) First mix white carbon black, carbon nanotubes, boron nitride and hydroxypropyl starch at 50°C and...

Embodiment 2

[0030] A noise-reducing composite material, consisting of the following raw materials in parts by weight: 20 parts of textile fibers, 15 parts of mixed sol, 2 parts of surfactants; 25 parts of thermoplastic polyurethane, 15 parts of melamine, 10 parts of lignocellulose, and 6 parts of white carbon black 2 parts of carbon nanotubes, 2 parts of acetyl tributyl citrate, 2 parts of boron nitride, 2 parts of hydroxypropyl starch, 2 parts of glycerin and 10 parts of n-octane.

[0031] The mixed sol includes 20 parts of silica sol, 35 parts of aluminum sol, 35 parts of zirconium sol and 40 parts of titanium sol, wherein the solid content is greater than 25%.

[0032] The surfactant is 5% sodium bicarbonate aqueous solution in mass fraction.

[0033] The present invention also provides the preparation method of the noise reduction composite material as follows:

[0034] 1) First mix white carbon black, carbon nanotubes, boron nitride and hydroxypropyl starch at 60°C and 800r / min for ...

Embodiment 3

[0041] A noise reduction composite material, consisting of the following raw materials in parts by weight: 17 parts of textile fibers, 12 parts of mixed sol, 1.5 parts of surfactants; 22 parts of thermoplastic polyurethane, 12 parts of melamine, 7 parts of lignocellulose, and 5 parts of white carbon black 1.5 parts of carbon nanotubes, 1.5 parts of acetyl tributyl citrate, 1.5 parts of boron nitride, 1.5 parts of hydroxypropyl starch, 1.5 parts of glycerin and 9 parts of n-octane.

[0042] The mixed sol includes 17 parts of silica sol, 30 parts of aluminum sol, 30 parts of zirconium sol and 35 parts of titanium sol, wherein the solid content is greater than 25%.

[0043] 11. Described tensio-active agent is the sodium bicarbonate aqueous solution that mass fraction is 5%.

[0044] The present invention also provides the preparation method of the noise reduction composite material as follows:

[0045] 1) First mix white carbon black, carbon nanotubes, boron nitride and hydroxypr...

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Abstract

The invention discloses an acoustic damping composite material and a preparation method thereof. The acoustic damping composite material comprises the following raw materials in parts by weight: 15 to20 parts of textile fiber, 10 to 15 parts of mixed sol, 1 to 2 parts of a surfactant, 20 to 25 parts of thermoplastic polyurethane, 10 to 15 parts of melamine, 5 to 10 parts of lignocellulose, 4 to 6parts of white carbon black, 1 to 2 parts of carbon nanotubes, 1 to 2 parts of acetyl tributyl citrate, 1 to 2 parts of boron nitride, 1 to 2 parts of hydroxypropyl starch, 1 to 2 parts of glycerinum, and 8 to 10 parts of normal octane. The acoustic damping composite material is simple in preparation technology, and cheap and available in the raw materials, avoids the use of environment-harmful lead, and is good in sound absorption and noise reduction effect.

Description

technical field [0001] The invention relates to the field of materials, in particular to a noise reduction composite material and a preparation method thereof. Background technique [0002] Noise pollution has become a contemporary worldwide problem, and it is listed as the world's four major public hazards together with water pollution, air pollution, and solid waste pollution. With the rapid development of industry, agriculture, and transportation, noise pollution is becoming more and more serious, causing harm to people's body and mind, and is increasingly recognized and concerned by people. Noise control In addition to reducing the noise of the noise source, starting from the transmission path, the application of acoustic noise reduction materials is also a very effective method. [0003] Polyurethane can form materials with different functions by changing processing raw materials and fiber resources. It has the advantages of light weight, sound insulation, shock absorp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M11/79D06M11/83D06M15/564D06M11/80D06M15/11D06M13/148D06M13/224D06M15/01D06M13/364D06M11/74D06M11/76E04B1/82
CPCD06M11/74D06M11/76D06M11/80D06M13/148D06M13/224D06M13/364D06M15/01D06M15/11E04B1/8227
Inventor 海苗苗李明珠
Owner 李明珠
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