Sound absorption material and preparation method thereof

A sound-absorbing material, mass percentage technology, applied in the field of sound-absorbing materials, can solve problems such as limited application range, low penetration rate of micropores, general sound-absorbing effect, etc., and achieve improved sound-absorbing performance, large pore size range, and good thermal performance and the effect on the mechanical properties

Inactive Publication Date: 2012-11-07
CHONGQING UNIV OF ARTS & SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantages of sound-absorbing materials such as inorganic foam building materials are high strength, good processing performance, waterproof, non-combustible, corrosion-resistant, and non-aging; the disadvantage is that the sound-absorbing effect is general and the penetration rate of micropores is small.
[0007] As mentioned above, although the existing sound-absorbing materials are various in variety and have their own advantages and disadvantages, due to the limitation of the material's own performance, the application range of the above-mentioned various materials is limited to a certain extent, and the development of science and technology And social progress has put forward higher requirements for the comprehensive performance of sound-absorbing materials

Method used

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  • Sound absorption material and preparation method thereof
  • Sound absorption material and preparation method thereof
  • Sound absorption material and preparation method thereof

Examples

Experimental program
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Embodiment 1

[0025] Embodiment 1: first by mass percent 40% polystyrene (PS) and 34% ethylene propylene rubber (EPR), 20% mesoporous molecular sieve MCM-41, 3% anhydrous zinc borate and 3% CZX-768 without Stir and mix the poisonous calcium-zinc composite stabilizer evenly; knead the above mixture on a kneader at 130°C for 10 minutes to prepare PS / MCM-41 composite sound-absorbing material.

[0026] Polystyrene (PS) grade is Taiwan Chemical Fiber PS 5250, provided by Chengdu Golden Eagle Group Trading Co., Ltd.; ethylene propylene rubber (EPR) grade J-0030, provided by Jilin Xingyun Chemical Co., Ltd. of Jihua Group; MCM-41 mesoporous molecular sieve : The product produced by Nanjing Xianfeng Nano Material Technology Co., Ltd. is a mesoporous molecular sieve with a hexagonal ordered pore structure and long-range order. Its pore size is 3.5nm and its BET specific surface area is ≥900m 2 / g, pore volume ≥ 0.6cm 3 / g. Anhydrous zinc borate was provided by Chengdu Kaifei High Energy Chemical I...

Embodiment 2

[0027] Embodiment 2: first by mass percent 30% polyethylene (PE) and 18% butyl rubber, 50% mesoporous molecular sieve MCM-41, 1% magnesium hydroxide flame retardant and 1% mercaptan organotin (8831 ) heat stabilizer and stir and mix evenly; the above mixture is kneaded for 20 minutes at a temperature of 110° C. on a kneader to prepare a PE / MCM-41 composite sound-absorbing material.

[0028] Polyethylene (PE) is Jilin Petrochemical general film material 7042, melt index 1.7-2.3g / 10min density: 0.918~0.922g / cm 3 ; Butyl rubber model: Japan JSR 268, provided by Chengdu (Hengyu) Chemical Trading Co., Ltd.; magnesium hydroxide flame retardant provided by Shandong Luhua Chemical Co., Ltd.; mercaptan organotin (8831) heat stabilizer provided by Beijing Provided by San'an Chemical Products Co., Ltd.

Embodiment 3

[0029] Embodiment 3: first by mass percentage 20% polyethylene (PE) and 13% butyl rubber, 65% mesoporous molecular sieve MCM-41, 1% magnesium hydroxide and 1% mercaptan organotin (8831) thermal stability The agent is stirred and mixed evenly; the above mixture is kneaded for 20 minutes at a temperature of 110°C on a kneader to prepare a PE / MCM-41 composite sound-absorbing material.

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Abstract

The invention relates to a sound absorption material and a preparation method thereof. The method comprises the following steps of: stirring and uniformly mixing the following materials in percentage by mass: 20-60 percent of resin, 10-60 percent of rubber, 5-50 percent of mesoporous molecular sieve, 0.5-3 percent of flame retardant and 1-5 percent of stabilizer; and mixing mixture on a mixer at the temperature of 90-150 DEG C for 5-30 minutes to prepare the sound absorption material with superior comprehensive performance. The prepared sound absorption material has the advantages of an organic sound absorption material and an organic foam sound absorption material, has high-efficiency sound absorption performance in a high frequency range, an intermediate frequency range and a low frequency range and has high sound absorption performance in a wide frequency range, and the sound absorption performance of the sound absorption material is improved by over 45 percent compared with that of normal foam plastic. In addition, the sound absorption material prepared by the invention has high thermal performance and mechanical property, is simple in processing process, convenient to operateand easy for realizing industrialization, and has broad application prospect at places or environments needing to absorb sound and reduce noise, such as theaters, meeting rooms, concert halls, recording studios, sports halls, freeways and the like.

Description

technical field [0001] The invention relates to a sound-absorbing material, in particular to a composite sound-absorbing material capable of significantly improving mid-low frequency sound-absorbing performance and a preparation method thereof. Background technique [0002] With the rapid development of modern industry, noise is becoming more and more harmful to human beings. Noise pollution, air pollution and water pollution are considered to be the three major environmental hazards in the contemporary world. Noise not only affects people's normal work order and work efficiency, but also affects people's daily life and physical and mental health. Controlling noise has become a top priority for human beings, and the research on sound-absorbing and noise-reducing materials has become one of the important research directions of scientific and technological workers all over the world. [0003] Common sound-absorbing materials include the following categories: [0004] (1) Or...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/12C08L23/06C08L25/06C08L23/16C08L9/02C08L23/22C08K13/04C08K3/38C08K3/22C08K5/523C08K7/24C08K5/098
Inventor 刘玉荣
Owner CHONGQING UNIV OF ARTS & SCI
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