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Method for preparing sound absorption and sound insulation composite material

A composite material and formula technology, applied in the field of preparation of sound-absorbing and sound-insulating composite materials, can solve the problems of poor noise reduction, unsatisfactory, cumbersome and the like, and achieve the effect of a simple heating method

Inactive Publication Date: 2013-04-17
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The acoustic functional materials that exist in reality are not ideal. Either the noise reduction effect is poor or they are too bulky to meet the needs of modern people.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Chopped basalt fibers with the same diameter and length are selected, and 3, 6 or 9 parts by weight of surface-treated basalt fibers are mixed with 97 parts, 94 parts or 91 parts of PVC binder respectively. The sample has a good compaction effect under the microscope, and the sound absorption and sound insulation properties are: the average sound absorption coefficients are 0.064, 0.064, and 0.07; the average sound insulation volumes are 36dB, 36dB, and 42dB.

Embodiment 2

[0025] Using basalt chopped fibers with the same content and length, different fiber diameters of 13 μm, 15 μm or 17 μm were mixed in PVC binder to make samples. Its sound-absorbing and sound-insulating properties are as follows: the average sound-absorbing coefficients are 0.064, 0.064, and 0.076; the average sound insulation volumes are 37dB, 36dB, and 38dB.

Embodiment 3

[0027] The fiber content and fiber diameter are also fixed, and the basalt fiber and the PVC binder with a length of 3mm, 6mm or 9mm are selected to mix and prepare samples. The sound absorption and sound insulation properties are as follows: the average sound absorption coefficient is 0.089, 0.070 and 0.065; the average sound insulation volume is 38dB, 36dB and 39dB.

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Abstract

The invention discloses a method for preparing a sound absorption and sound insulation composite material. The method comprises the steps that basalt fibers with different diameters and lengths are respectively subjected to fiber surface treatment through alkali, acid and coupling agent solution, so that the affinity of the fiber surface is increased; a polyvinyl chloride (PVC) binding agent is prepared according to the ratio; and the basalt fibers after the surface treatment and the PVC binding agent are mixed to be put into a mould, are heated and dried and cooled after the formation. The method uses common raw materials mostly, so that the cost is low; the material belongs to an environment-friendly material, the pollution is small, samples are not toxic; and a heating mode is simple, drying and heating only need to be carried out in a drying oven so as to obtain the samples.

Description

technical field [0001] The invention relates to a preparation method of a sound-absorbing and sound-insulating composite material. Background technique [0002] With the development of modern industry and information, noise pollution is becoming more and more prominent, which obviously affects people's physical and mental health, quality of life and the life of various equipment in life. Together with water pollution, air pollution and solid waste pollution, it has become the four major environmental hazards in today's society. The hazards of noise include: damage to hearing, physiological effects on people, impacts on people's lives and work, and physical effects. (1) Hearing damage refers to people working in a strong noise environment for a long time, which will damage the auditory tissue of the inner ear and cause different degrees of deafness. A large amount of data shows that the environment where the noise level is below 80dB can ensure that people work for a long t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08K13/06C08K9/06C08K7/10C08K5/098C08K5/1515
Inventor 张凤林林希宁曹根王成勇
Owner GUANGDONG UNIV OF TECH
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