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Method for fabricating light sound absorption and insulation core board with waste slag powder modified micro-foam grains

A slag powder and micro-foaming technology, which is applied in sound insulation, applications, household appliances, etc., can solve the problems of lack of sound absorption performance, great difference in acoustic performance, poor sound insulation effect, etc., and achieve low cost, sound absorption and sound insulation Good performance and broad application prospects

Inactive Publication Date: 2013-06-12
NANCHANG HANGKONG UNIVERSITY
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  • Description
  • Claims
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Problems solved by technology

Therefore, from the perspective of sound absorption and sound insulation and noise reduction theory, the acoustic performance of sound-absorbing foam and sound-insulating foam is very different. The material does not have good sound absorption properties

Method used

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  • Method for fabricating light sound absorption and insulation core board with waste slag powder modified micro-foam grains
  • Method for fabricating light sound absorption and insulation core board with waste slag powder modified micro-foam grains

Examples

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Embodiment example

[0020] This example takes the production of a small sample (area 10cm×10cm×2cm) as an example. When applied to actual projects, the proportion can be referred to or a specific size lightweight sound-absorbing core board can be customized according to project needs.

[0021] The size of the stainless steel mold used in the example is 10.5cm×10.5cm×2cm. First, the polyurethane prepolymer is configured in a certain proportion, and the A and B components are separated. The A component is polyether polyol, catalyst, and foaming agent. , stabilizer, organic silicon oil, etc., the B component is liquefied MDI, and the waste slag powder with a particle size of 120 mesh is the C component. Among them, the percentage mass ratio of each component of component A is: 95% polyether polyol YD-1050, 2% bis-dimethylaminoethyl ether (A-1), 1% dimethylethanolamine (DMEA), 1% liquid Paraffin, 0.5% OR-501, 0.5% silicone oil L-6900. Weigh out 40g of component A, 40g of component B and 24g of compo...

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Abstract

The invention relates to a method for fabricating a light sound absorption and insulation core board with waste slag powder modified micro-foam grains. With the adoption of density and acoustic impedance of the waste slag powder modified micro-foam grain added during micro-forming of polyurethane resin, the appropriate aperture and porosity of a micro-foaming material and the additive amount of waste slag powder are controlled to greatly improve sound insulation of the micro-foaming material with a sound absorption property, so that the light sound absorption and insulation core board with sound absorptivity and sound insulation ability is fabricated. The conventional concept that the traditional sound absorption material are poor in sound insulation effect generally is broken through, and the light sound absorption and insulation core board is suitable for composite sound insulation structures such as building walls in non-bearing structures, floors, interior decoration, and traffic sound barriers. The method has the advantages of waste recycling, high-rise building bearing reduction, increased indoor plot ratio, good sound absorption and insulation performances, low cost and the like, and has a wide application prospect.

Description

technical field [0001] The invention relates to a method for preparing a lightweight sound-absorbing and insulating core board, in particular to a method for preparing a lightweight sound-absorbing and insulating core board by modifying micro-foam tendons with waste slag powder. Background technique [0002] Foam material is a kind of acoustic material commonly used in the field of noise control at present. Its light weight, easy processing and handling, and good acoustic performance are widely used in the fields of building sound insulation walls, interior decoration, road traffic, and military affairs. Among the various acoustic foam materials that have been developed, the research mainly focuses on the research of sound-absorbing foam materials and sound-insulating foam materials. In order to obtain better sound absorption performance, traditional sound-absorbing foam materials are generally required to be soft, porous (open-pored) and form an IPN network structure. With ...

Claims

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Application Information

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IPC IPC(8): E04B1/86E01F8/00C04B38/02C04B18/12C04B18/14
CPCY02W30/91
Inventor 李明俊蒋文明徐泳文耿军军叶皓
Owner NANCHANG HANGKONG UNIVERSITY
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