Environment-friendly plant fiber foaming and sound absorption material and preparation method thereof as well as water filtering mold and molding device

A technology of plant fibers and sound-absorbing materials, applied in separation methods, chemical instruments and methods, filtration separation, etc., can solve problems such as insolubility, environmental pollution, and inability to melt, achieve convenient operation, reduce free water content, and reduce energy consumption. consumption effect

Pending Publication Date: 2019-01-01
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the most widely used foam plastic sound-absorbing material is mainly polyurethane foam plastic. Although it has a strong sound-absorbing body with good performance, polyurethane foam is a thermosetting plastic that can neither melt nor dissolve, which is extremely serious for environmental pollution.

Method used

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  • Environment-friendly plant fiber foaming and sound absorption material and preparation method thereof as well as water filtering mold and molding device
  • Environment-friendly plant fiber foaming and sound absorption material and preparation method thereof as well as water filtering mold and molding device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] (1) Take 16g of corrugated cardboard and bagasse pulp board with core paper removed and tear them into small pieces, soak them in water for 5 hours, then dissociate them in a decomposer for 5000 rpm, filter the water and put them in a sealed bag to balance the water for 24 hours.

[0056] (2) Mix waste paper pulp obtained in step (1) with bagasse pulp at a mass ratio of 1:1, and mix 0.64 g of sodium hydroxide solid with the mixed slurry so that the mass fraction of the mixed slurry is 10%, Treat it in a water bath at 70°C for 30 minutes, and rub it every 10 minutes.

[0057] (3) Take 2.4g of polyvinyl alcohol in 50ML of deionized water and stir in an oil bath at 90°C for 40min.

[0058] (4) Take 8g of cornstarch and stir in a 70°C water bath until gelatinized.

[0059] (5) Wash away the sodium hydroxide in the solution in step (2), then mix the gelatinized cornstarch with the dissolved PVA solution cooled to room temperature, then add 3g of calcium carbonate, 0.4g of b...

Embodiment 2

[0065] (1) Take 16g of corrugated cardboard and bagasse pulp board with core paper removed and tear them into small pieces, soak them in water for 5 hours, then dissociate them in a decomposer for 5000 rpm, filter the water and put them in a sealed bag to balance the water for 24 hours.

[0066] (2) Mix waste paper pulp obtained in step (1) with bagasse pulp at a mass ratio of 1:1, and mix 0.64 g of sodium hydroxide solid with the mixed slurry so that the mass fraction of the mixed slurry is 10%, Treat it in a water bath at 70°C for 30 minutes, and rub it every 10 minutes.

[0067] (3) Take 4g of polyvinyl alcohol in 50ML of deionized water and stir in an oil bath at 90°C for 40min.

[0068] (4) Take 8g of cornstarch and stir in a 70°C water bath until gelatinized.

[0069] (5) Wash off the sodium hydroxide in the solution in step 2), then mix the gelatinized cornstarch with the PVA solution that has been dissolved and cooled to room temperature, and then add 3g of calcium ca...

Embodiment 3

[0075] (1) Take 16g of corrugated cardboard and bagasse pulp board with core paper removed and tear them into small pieces, soak them in water for 5 hours, then dissociate them in a decomposer for 5000 rpm, filter the water and put them in a sealed bag to balance the water for 24 hours.

[0076] (2) Mix waste paper pulp obtained in step (1) with bagasse pulp at a mass ratio of 1:1, and mix 0.64 g of sodium hydroxide solid with the mixed slurry so that the mass fraction of the mixed slurry is 10%, Treat it in a water bath at 70°C for 30 minutes, and rub it every 10 minutes.

[0077] (3) Take 4g of polyvinyl alcohol in 50ML of deionized water and stir in an oil bath at 90°C for 40min.

[0078] (4) Take 8g of cornstarch and stir in a 70°C water bath until gelatinized.

[0079] (5) Wash away the sodium hydroxide in the solution in step 2), then mix the gelatinized cornstarch with the PVA solution that has been dissolved and cooled to room temperature, then add 3g of calcium carbo...

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Abstract

The invention relates to an environment-friendly plant fiber foaming and sound absorption material and a preparation method thereof as well as a water filtering mold and a molding device. According tothe environment-friendly plant fiber foaming and sound absorption material, waste paper and bagasse are used as raw materials and are subjected to fiber separation, fibrillation and alkali pre-treatment, the raw materials are mechanically stirred and put into the water filtering and molding device; a foaming material subjected to water filtering and molding is put into a microwave oven and is subjected to microwave foaming; after drying and finishing modification are carried out, the foaming material with a certain pore structure can be obtained. The environment-friendly plant fiber foaming and sound absorption material has the advantages that the material is cheap in price and easy to obtain; a specific formula is selected and an inner pore structure is enhanced; the material has a soundabsorption function and also has good properties of impact resistance, heat preservation and heat insulation, flame-retarding and anticorrosion performance, green and degradable performance and the like. Furthermore, a specially-designed mold is adopted and the problem of existing free foaming is solved, so that an obtained foaming body has a uniform surface, no concave part at the center, and aregular shape.

Description

technical field [0001] The invention discloses an environment-friendly plant fiber foaming sound-absorbing material, and particularly relates to a preparation method of a plant fiber foaming material that can be used for sound-absorbing treatment, and two materials used for processing the plant fiber foaming sound-absorbing material. Set of special molds, water filter device molds and forming device molds. Background technique [0002] With the rapid development of my country's aviation, railways, highways and urban traffic, noise has become a major environmental pollution problem. The fundamental way to control noise is to achieve the purpose of noise reduction through sound absorption. At present, the most widely used sound-absorbing material of foamed plastics is mainly polyurethane foamed plastics. Although it has a strong sound-absorbing body with good performance, polyurethane foam is a thermosetting plastic that can neither melt nor dissolve, which is extremely serio...

Claims

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Application Information

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IPC IPC(8): C08L97/02C08L1/02C08L29/04C08L3/02C08K13/06C08K9/04C08K3/34C08K3/26C08K3/38C08K5/053C08J9/08B01D29/05B29C44/34
CPCB01D29/05C08J9/0023C08J9/0061C08J9/0066C08J9/009C08J9/08B29C44/34B29C44/3442C08J2203/02C08J2203/18C08J2301/02C08J2397/02C08J2401/02C08J2403/02C08K13/06C08K9/04C08K5/053C08J2497/02C08K3/346C08J2429/04C08K2003/265C08K2003/387
Inventor 陈奇峰杜新亚陈广学
Owner SOUTH CHINA UNIV OF TECH
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