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Preparation method of acoustical material

A technology of sound-absorbing materials and additives, applied in the field of sound-absorbing materials, can solve problems such as deterioration of sound-absorbing properties, damage to the surrounding environment by fibers or dust, and susceptibility to environmental influences, etc., to improve weather resistance, increase water resistance, and increase biological activity Effect

Inactive Publication Date: 2017-12-22
常州美帛纺织品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention: Aiming at the problem that most of the current sound-absorbing materials are loose and porous fiber materials, which are easy to generate fibers or dust and damage the surrounding environment, and are easily affected by the environment and deteriorate the sound-absorbing properties, the present invention provides a A kind of preparation method of sound-absorbing material

Method used

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  • Preparation method of acoustical material

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preparation example Construction

[0017] The preparation of the additive is as follows: according to the mass ratio of 3:2:1-3, the cellulase, papain and ethimorph are evenly stirred to obtain the additive.

[0018] The selection of the conditioning agent is any one of diethylenetriamine and dioctyl sodium dibutyrate.

[0019] A method for preparing a sound-absorbing material, the method comprising the steps of:

[0020] (1) According to the mass ratio of 4:7:1~3, put the needles, 1.1mol / L hydrochloric acid and p-phenylenediamine into the container and mix evenly, and carry out ultrasonic vibration for 45~50min, pressurize the container to 1.2MPa , let stand for 3 to 5 minutes, reduce the pressure to standard atmospheric pressure, filter, and collect the filtrate;

[0021] (2) Put the filtrate into a carbonization furnace, use nitrogen protection, heat up at 10°C / min to 180-200°C for pre-carbonization for 1-2 hours, collect the pre-carbonized matter, crush it, pass through a 150-mesh sieve, and collect the si...

Embodiment 1

[0026] The preparation of the additive is as follows: according to the mass ratio of 3:2:2, the cellulase, papain and bimorph are evenly stirred to obtain the additive.

[0027] The choice of conditioner is: sodium dioctyl sulfonate dibutyrate.

[0028] A method for preparing a sound-absorbing material, the method comprising the steps of:

[0029] (1) According to the mass ratio of 4:7:2, put Maozhen, 1.1mol / L hydrochloric acid and p-phenylenediamine into the container and mix evenly, and perform ultrasonic vibration for 48 minutes, pressurize the container to 1.2MPa, and let it stand for 4 minutes , reduce the pressure to standard atmospheric pressure, filter, and collect the filtrate;

[0030] (2) Put the filtrate into a carbonization furnace, use nitrogen protection, heat up to 190°C at 10°C / min for pre-carbonization for 1.5 hours, collect the pre-carbonized matter, crush it, pass through a 150-mesh sieve, and collect the sieved particles;

[0031] (3) In parts by weight,...

Embodiment 2

[0035] The preparation of the additive is as follows: according to the mass ratio of 3:2:3, the cellulase, the papain and the bimorph are stirred evenly to obtain the additive.

[0036] The selection of the conditioning agent is any one of diethylenetriamine and dioctyl sodium dibutyrate.

[0037] A method for preparing a sound-absorbing material, the method comprising the steps of:

[0038] (1) According to the mass ratio of 4:7:3, put Maozhen, 1.1mol / L hydrochloric acid and p-phenylenediamine into the container and mix evenly, and perform ultrasonic vibration for 50 minutes, pressurize the container to 1.2MPa, and let it stand for 5 minutes , reduce the pressure to standard atmospheric pressure, filter, and collect the filtrate;

[0039] (2) Put the filtrate into a carbonization furnace, use nitrogen protection, heat up to 200°C at 10°C / min for pre-carbonization for 2 hours, collect the pre-carbonized matter, crush it, pass through a 150-mesh sieve, and collect the sieved p...

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Abstract

The invention relates to the technical field of acoustical materials, and particularly relates to a preparation method of an acoustical material. Cogongrass is used as a substrate, and is treated by phenylenediamine, inner fibers of the cogongrass is hardened preliminarily, then the cogongrass is subjected to pre-carbonation, saccharides, lignin and the like on the surface of the cogongrass are partially pyrolyzed, surface active groups are exposed, acrylic acid and methyl methacrylate are polymerized under the effects of a conditioner and ammonium persulfate, meanwhile, the acrylic acid and the methyl methacrylate are combined to the exposed surface active groups, the combination degree is improved, silylation is also introduced, the degree of combination between acoustical materials is increased, weather resistance is improved, a net-shaped structure is formed, and the sound absorption efficiency is improved; and because enzyme is added in a polymerization process, on one hand, bioactivity is improved, on the other hand, the cogongrass subjected to pre-carbonation is subjected to enzymolysis by the enzyme, abundant pore structures are formed in the cogongrass, and the sound absorption efficiency is further improved.

Description

technical field [0001] The invention relates to the technical field of sound-absorbing materials, in particular to a preparation method of sound-absorbing materials. Background technique [0002] With the development of industrial production, transportation, and urban construction, as well as the increase of population density and the increase of household facilities (audio, air conditioning, television, etc.), environmental noise is becoming more and more serious, and it has become a major public hazard that pollutes the human social environment. Noise not only affects hearing, but also has adverse effects on the human cardiovascular system, nervous system, and endocrine system. Therefore, for people's living needs, a kind of sound-absorbing material that can absorb noise and weaken the effective material of noise has appeared on the market. [0003] Sound-absorbing material refers to a material that can attenuate sound energy during the propagation of sound waves. Tradit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L51/00C08L89/00C08K5/357C08F289/00C08F220/06C08F220/14C08F230/08C08J9/26
CPCC08L51/00C08F289/00C08J9/26C08J2351/00C08J2489/00C08L2203/12C08L2205/025C08L2205/03C08L89/00C08K5/357C08F220/06
Inventor 刘芳尹凯欣
Owner 常州美帛纺织品有限公司
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