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Preparation method of carbon fiber low-density surface coating acoustic board for building

A surface coating, carbon fiber technology, applied in the field of low-density surface coating composite sound-absorbing sheet, can solve the problems of low sound insulation efficiency, precious living space, difficult installation, etc., and achieve good anti-aging and corrosion resistance. , Easy to mass production, good sound absorption effect

Inactive Publication Date: 2019-03-22
XINGHUA PRECISION CASTING & FORGING IND RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Some sound-absorbing panels on the market are made by installing rubber layers, vibration-absorbing materials or sound-insulating felts between two panels. Using this method, the sound insulation effect can be improved to a certain extent in the short term, but the sound insulation effect will decrease. decrease over time
As we all know, materials such as rubber will slowly age in the air, causing them to gradually harden and lose their elasticity, resulting in a gradual decrease in sound insulation over time
On the other hand, the method of installing a rubber layer or a sound-insulating felt layer between the two boards is also very expensive.
[0004] There are some ordinary sound-absorbing panels on the market. In order to improve the sound insulation effect, it is realized by increasing the thickness and weight of the wall panel. Although this method can improve the sound insulation effect to a certain extent, it brings many disadvantages: 1) Sound insulation efficiency (That is, the improvement of sound insulation) is low, because according to the laws of physics, if the surface density of the board is doubled, its theoretical sound insulation can only increase by 6 decibels at most;
2) The thicker the wallboard, the more space it takes up, and the more valuable living space people lose
3) The heavier the wallboard, the more difficult it is to install; and if the wallboard is too heavy, it is also necessary to consider whether the floor can bear it
4) The thicker and heavier the wallboard, the more raw materials used to produce the wallboard, the higher the price of the wallboard, the higher the installation cost, and the higher the value of the lost living space, resulting in a higher comprehensive cost of the final project

Method used

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  • Preparation method of carbon fiber low-density surface coating acoustic board for building

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Step 1: Use carbon fiber needled body as the prefabricated body material, and the density of the prefabricated body is controlled at 0.06g / cm 3 , the carbon fiber is PAN-based carbon fiber, the number of tows is 1K, and the needle density is 10 needles / cm 2 , the carbon fiber length is controlled at 5mm-100mm.

[0027] Step 2: Configure the resin impregnating solution, mix and stir the resin and alcohol according to a certain ratio, the mixing ratio is resin: alcohol = 1:3, the resin is epoxy resin, the alcohol is industrial alcohol, the purity is ≥ 95%, and the mixture is evenly stirred.

[0028] Step 3: pressurize and impregnate the resin impregnating solution prepared in step 2 into the body of the prefabricated body under a pressure of 0.6 MPa for 1 hour.

[0029] Step 4: Put the green body after the impregnation treatment in Step 3 into a curing furnace for curing treatment. The curing temperature is 110° C., the curing temperature rise rate is 5° C. / h, and the te...

Embodiment 2

[0034] Step 1: Use carbon fiber needled body as the prefabricated body material, and the density of the prefabricated body is controlled at 0.10 g / cm 3 , the carbon fiber is PAN-based carbon fiber, the number of tows is 3K, and the needle density is 20 needles / cm 2 , the carbon fiber length is controlled at 5mm-100mm.

[0035] Step 2: Configure the resin impregnation solution, mix the resin and alcohol in a certain proportion, the mixing ratio is resin: alcohol = 1:6, the resin is phenolic resin, the alcohol is industrial alcohol, the purity is ≥95%, and the mixture is evenly stirred.

[0036] Step 3: pressurize and impregnate the resin impregnating solution prepared in step 2 into the body of the preform under a pressure of 2.0 MPa for 2 hours.

[0037] Step 4: Put the green body after the impregnation treatment in Step 3 into a curing furnace for curing treatment. The curing temperature is 150° C., the curing temperature rise rate is 10° C. / h, and the temperature is kept fo...

Embodiment 3

[0042] Step 1: Use carbon fiber needled body as the prefabricated body material, and the density of the prefabricated body is controlled at 0.13g / cm 3 , the carbon fiber is PAN-based carbon fiber, the number of tows is 12K, and the needle density is 40 needles / cm 2 , the carbon fiber length is controlled at 5mm-100mm.

[0043] Step 2: Configure the resin impregnation solution, mix the resin and alcohol in a certain proportion, the mixing ratio is resin: alcohol = 1:8, the resin is epoxy resin, the alcohol is industrial alcohol, the purity is ≥ 95%, and the mixture is evenly stirred.

[0044] Step 3: pressurize and impregnate the resin impregnating solution prepared in step 2 into the body of the preform under a pressure of 4.0 MPa for 10 hours.

[0045] Step 4: Put the green body after the impregnation treatment in Step 3 into a curing furnace for curing treatment. The curing temperature is 200° C., the curing temperature rise rate is 20° C. / h, and the temperature is kept for...

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Abstract

The invention discloses a preparation method of a carbon fiber low-density surface coating composite acoustic board for a building. A staple fiber needling body is used as a preform skeleton, and hardening treatment is carried out by processes of resin impregnation, solidifying and carbonization. The method comprises the steps of one, taking a carbon fiber needling body as a preform material; two,preparing resin impregnation liquid; three, carrying out resin impregnation; four, carrying out solidifying treatment; five, carrying out carbonization treatment; six, carrying out machining; and seven, carrying out surface coating treatment to obtain the carbon fiber low-density surface coating composite acoustic board for the building. The carbon fibers are taken as the skeleton, a resin carbonmatrix is taken as a reinforcing body, and after being subjected to surface coating hole sealing treatment, the low-density porous carbon / carbon acoustic board has the advantages that the acoustic board is good in waterproof, fireproof, anti-aging and anti-impact abilities, energy consumption of used materials is low, environmental protection is implemented, the acoustic board is pollution-free to the environment after being discarded, the acoustic absorption effect is good in a using process, and the like.

Description

technical field [0001] The invention belongs to the field of new materials, and in particular relates to a sound-absorbing plate made of composite material with corrosion resistance, anti-aging and low-density surface coating. Background technique [0002] Sound-absorbing board is an ideal sound-absorbing decorative material, with sound-absorbing, environmental protection, flame retardant, heat insulation, heat preservation, moisture-proof, mildew-proof, easy to remove dust, easy to cut, can be mosaiced, simple construction, good stability, impact resistance Good, independent and cost-effective, it can meet the needs of different styles and levels of sound-absorbing decoration. [0003] Some sound-absorbing panels on the market are made by installing rubber layers, vibration-absorbing materials or sound-insulating felts between two panels. Using this method, the sound insulation effect can be improved to a certain extent in the short term, but the sound insulation effect wil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/06C04B35/83C04B35/622C04B35/524C04B41/85
CPCC04B38/067C04B35/524C04B35/622C04B35/83C04B41/5001C04B41/85C04B2235/48C04B2235/616C04B2235/6562C04B38/0067C04B41/48C04B41/4539
Inventor 梁智萍马开梅何平伟
Owner XINGHUA PRECISION CASTING & FORGING IND RES INST CO LTD
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