High-efficiency paper base sound-absorbing material and preparation thereof

A sound-absorbing material and paper-based technology, which is applied in the direction of sound-emitting devices, instruments, and hydraulic-setting material layered products, can solve problems such as low strength, high brittleness, and fire hazards, and achieve simplified preparation processes and obvious sound-absorbing effects , Improve the absorption effect

Inactive Publication Date: 2004-02-04
WUHAN UNIV OF TECH
View PDF0 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] A considerable part of the existing sound-absorbing materials are organic polymer materials. The cost of these organic polymer materials is relatively high, and at the same time, they bring fire hazards to related structures.
There are also quite a few sound-absorbing materials with low strength or high brittleness, which affect the transportation, installation and service life of sound-absorbing materials

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • High-efficiency paper base sound-absorbing material and preparation thereof
  • High-efficiency paper base sound-absorbing material and preparation thereof
  • High-efficiency paper base sound-absorbing material and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Example 1 The above-mentioned raw materials were used to prepare a paper-based sound-absorbing material with a water-cement ratio of 0.50. The composition and performance test results are listed in Table 2

Embodiment 2

[0037] Example 2 The above-mentioned raw materials were used to prepare a paper-based sound-absorbing material with a water-cement ratio of 0.55. The composition and performance test results are listed in Table 3

[0038] name

[0039] Composition of foam mortar

[0040]

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
diameteraaaaaaaaaa
sound absorption coefficientaaaaaaaaaa
sound absorption coefficientaaaaaaaaaa
Login to view more

Abstract

The material is fabricated by paper made multihole base material covered with foaming cement slurry in water-proof type. The triangle and polygon cavities formed by inserting paper to each other can arrest sound wave and light aggregate cement slurry body can carry on diffuse reflection and further absorption. The fabricated material can arrest sound wave into independent cavities and to use different sizes of hole seams and fibre distributed on mutihole cement and light aggregate to absorb sound wave and consume sound energy for sound wave of 100-2000 Hz frequency with average sound absorption coefficient up to 0.6.

Description

technical field [0001] The invention relates to a new type of building functional material, in particular to a paper-based sound-absorbing material and a manufacturing process that can significantly improve the low- and medium-frequency sound-absorbing properties of the sound-absorbing material. Background technique [0002] With the rapid development of industry, transportation, construction and other industries, the harm of noise to human beings is also increasing. At present, noise pollution has been recognized as the three major environmental hazards in the contemporary world together with air pollution and water pollution. Noise affects normal work order and work efficiency, and also affects people's daily life and physical and mental health. According to estimates by the World Health Organization, the annual loss caused by noise in the United States alone is nearly 4 billion U.S. dollars. It can be seen that controlling noise has become a top priority for human being...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): B32B3/12B32B13/08E04B1/86G10K11/168
Inventor 水中和吴少鹏万惠文玄东兴黄学辉陈刚
Owner WUHAN UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap