Class vacuum composite sound isolating material and producing process thereof

A sound-insulating material and preparation technology, which is applied in the direction of sound-emitting devices and instruments, can solve the problems of inability to withstand mechanical vibration, inability to cut, and high cost, and achieve the effects of light weight, easy installation, and high sound-absorbing and sound-insulating capabilities

Inactive Publication Date: 2007-03-21
NUCLEAR POWER INSTITUTE OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Its notable advantage is that it can isolate air noise of various frequencies; its disadvantages are also...

Method used

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  • Class vacuum composite sound isolating material and producing process thereof
  • Class vacuum composite sound isolating material and producing process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1. Use Al with a diameter of 0.2mm and a wall thickness of 10μm 2 o 3 -SiO 2 The hollow ceramic microspheres are pumped into a vacuum at a high temperature of 800°C to form vacuum ceramic microspheres 3;

[0026] 2. Mix the above-mentioned vacuum ceramic microspheres 3 with a viscoelastic substance 2 such as rubber (rubber powder), the volume of the vacuum ceramic microspheres 3 accounts for 50% of the total volume of the mixture, and form them by hot pressing at 200°C.

[0027] The fiber fabric (cloth) 1 can be paved on the outer surface of the composite material after thermocompression forming.

Embodiment 2

[0029] 1. Use Al with a diameter of 0.2mm and a wall thickness of 10μm 2 o 3 -SiO 2 The hollow ceramic microspheres are pumped into a vacuum at a high temperature of 800°C to form vacuum ceramic microspheres 3;

[0030] 2. The above-mentioned vacuum ceramic microspheres 3 are mixed with viscoelastic substances 2 such as resin (polyhexene powder or resin of similar nature), the volume of vacuum ceramic microspheres 3 accounts for 65% of the total volume of the mixture, and heated at 200°C Compression molding.

[0031] The fiber fabric (cloth) 1 can be paved on the outer surface of the composite material after thermocompression forming.

Embodiment 3

[0033] 1. Use Al with a diameter of 0.3mm and a wall thickness of 20μm 2 o 3 -SiO 2 The hollow ceramic microspheres are pumped into a vacuum at a high temperature of 1000°C to form vacuum ceramic microspheres 3;

[0034] 2. Mix the above-mentioned vacuum ceramic microspheres 3 with a viscoelastic substance 2 such as asphalt, the volume of the vacuum ceramic microspheres 3 accounts for 60% of the total volume of the mixture, and heat press at 400°C.

[0035] The fiber fabric 1 can be paved on the outer surface of the composite material formed by thermocompression.

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Abstract

This relates to vacuum like compound deadening and its preparation technique. The inner of deadening owns vacuum tiny cavity formed by vacuum ceramic ware tiny ball and closed by viscid matter with fibrin stuff making up the outside surface. The preparation technique is disposing hollow ceramic ware tiny ball under 800DEG C-1000DEG C and vacuum, fixing vacuum ceramic ware tiny ball with viscid matter. The volume to vacuum ceramic ware tiny ball of the total volume of admixture is 50% -65%, and hot pressing molding under 200DEG C-400DEG C to spread fibrin stuff on the outside surface of compound stuff. This vacuum like compound deadening owns high sound-absorbing and sound-insulating properties and its thickness is thin and weight is light for clipping and installation.

Description

technical field [0001] The invention belongs to a sound-insulating material and a preparation process thereof, in particular to a kind of vacuum composite sound-insulation material and a preparation process thereof. Background technique [0002] At present, there are three main types of sound insulation materials publicly reported at home and abroad: micro-through-hole materials, viscoelastic multilayer materials and vacuum glass. [0003] Microporous materials include silicate foam, fiberboard, perforated metal sheet, metal foam, etc. The microporous foam or fiber materials that have been studied include foamed metal materials such as foamed aluminum, polyester fiber foam, plant fiber foam, microporous silicate foam and glass fiber foam, cork gypsum foam and microporous asphalt cement, etc. The common feature is that the absorption coefficient for high-frequency sound is high, and the absorption coefficient for low-frequency sound is very low. In order to effectively redu...

Claims

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Application Information

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IPC IPC(8): G10K11/162
Inventor 龙冲生
Owner NUCLEAR POWER INSTITUTE OF CHINA
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