Ceramsite acoustic board and preparation method thereof

A technology of sound-absorbing panels and ceramsite, which is applied in the field of ceramsite-absorbing panels and its preparation, can solve problems such as poor sound-absorbing performance, poor hydrophobicity, and sinking of sound-absorbing materials, and achieve good sound-absorbing performance and good hydrophobicity. Water-based, the effect of improving the service life

Inactive Publication Date: 2021-02-12
天工俐德科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In recent years, noise pollution has brought great troubles to people's lives. Traditionally used sound-absorbing materials are generally fiber-based porous sound-absorbing materials, such as mineral wool, rock wool, centrifugal glass wool, etc. This type of fiber-based sound-absorbing materials There are problems such as environmental pollution in the production, use, and recycling links; in addition, during use, the sound-absorbing material will sink due to moisture and pulverization of the fiber, which will reduce the acoustic performance
[0003] Therefore, a new type of ceramsite sound-absorbing panel has been developed to replace fiber-based sound-absorbing materials. However, the currently used ceramsite sound-absorbing panels still have many disadvantages, such as: low strength, easy to be damaged during removal or transportation; The sound absorption performance is poor, which cannot meet the noise reduction requirements in the daily noise environment; the water repellency is poor, and the water absorption is serious, which affects the service life

Method used

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  • Ceramsite acoustic board and preparation method thereof
  • Ceramsite acoustic board and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Prepare resin mixed bonding solution: weigh 200g thermosetting resin (50g epoxy resin, 50g polyurethane resin, 100g phenolic resin), and 150g curing agent (20g aromatic polyamine, 30g acid anhydride, 100g resole phenolic resin) , 6g of DMP-30, 140g of epoxy diluent 692 were added to the thermosetting resin, and stirred at 225r / min at a temperature of 90°C for 1.5min to obtain 496g of resin mixed adhesive solution with good fluidity;

[0032] (2) Preparation of graphene oxide dispersion: disperse 5.0 g of graphene oxide powder in a mixed solution of 100 ml of ethanol and isopropanol (60 ml of ethanol, 40 ml of isopropanol) to obtain a graphene oxide dispersion;

[0033] (3) Preparation of mixed melt: add the graphene oxide dispersion obtained in step (2) to the resin mixed bonding solution obtained in step (1), and stir at 90°C for 45s at a speed of 225r / min to obtain mixed melt;

[0034] (4) Prepare the base layer of the sound-absorbing board: lay a layer of high-t...

Embodiment 2

[0038] (1) Prepare resin mixed bonding solution: weigh 125g polyester resin, add 97.5g curing agent (47.5g amino resin, 50g dicyandiamide), 2.5g DMP-30, 75g epoxy diluent 692 to polyester In the resin, stir at 200r / min at a temperature of 80°C for 1min to obtain 300g of resin mixed adhesive solution with good fluidity;

[0039] (2) Preparation of graphene oxide dispersion: disperse 9g of graphene oxide powder in 100ml of N-methylpyrrolidone and ultrasonically obtain graphene oxide dispersion;

[0040] (3) Preparation of mixed melt: add the graphene oxide dispersion obtained in step (2) to the resin mixed bonding solution obtained in step (1), and stir at 80°C for 30s at a speed of 200r / min to obtain mixed melt;

[0041](4) Prepare the base layer of the sound-absorbing board: lay a layer of high-temperature-resistant tarpaulin on the bottom of the mold; add the mixed melt obtained in step (3) to 9.4kg of mixed aggregate (3.76kg of fine aggregate with a particle size of 2-5mm, ...

Embodiment 3

[0045] (1) Preparation of resin mixed bonding solution: Weigh 200g of furan resin, add 170g of hydrazide, 2g of DMP-30, and 128g of epoxy diluent 692 into the polyester resin, and rotate at 250r / min at a temperature of 100°C Stir for 2 minutes to obtain 500 g of resin mixed adhesive solution with good fluidity;

[0046] (2) Preparation of graphene oxide dispersion: disperse 1.5 g of graphene oxide powder in a mixed solution of 100 ml of isopropanol and water (20 ml of isopropanol, 80 ml of water) and obtain a graphene oxide dispersion by ultrasonication;

[0047] (3) Preparation of mixed melt: add the graphene oxide dispersion obtained in step (2) to the resin mixed bonding solution obtained in step (1), and stir at a temperature of 100°C at a speed of 250r / min for 60s to obtain mixed melt;

[0048] (4) Prepare the base layer of the sound-absorbing board: lay a layer of high-temperature-resistant tarpaulin on the bottom of the mold; add the mixed melt obtained in step (3) to ...

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Abstract

The invention relates to a ceramsite acoustic board and a preparation method thereof. The preparation method comprises the following steps: preparing a resin mixed bonding solution by adding a curingagent accounting for 75-85 wt% of the mass fraction of thermosetting resin, an accelerant accounting for 1-3 wt% of the mass fraction of the thermosetting resin and a thinner accounting for 60-70 wt%of the mass fraction of the thermosetting resin into the thermosetting resin and stirring, dispersing 0.3-3 wt% of graphene oxide powder equivalent to the mass fraction of the resin mixed bonding solution into 100 ml of solvent, performing ultrasonic treatment to obtain graphene oxide dispersion liquid, adding the graphene oxide dispersion liquid into the resin mixed bonding solution, and stirringto obtain a mixed molten liquid, adding the mixed molten liquid into a certain amount of mixed aggregate, stirring to obtain a mixture, pouring the mixture into a mold, paving the mold with the mixture, carrying out vibration compaction, carrying out a reaction for a period of time at a certain temperature to obtain a sound absorption plate base layer, and carrying out hydrophobic treatment on the outer side of the sound absorption plate base layer, so that the outer surface of the sound absorption plate base layer is coated with the hydrophobic layer, and the ceramsite sound absorption plateis obtained.

Description

technical field [0001] The invention relates to engineering noise reduction materials, in particular to a light-weight and high-strength ceramsite sound-absorbing board with good hydrophobicity and a preparation method thereof. Background technique [0002] In recent years, noise pollution has brought great troubles to people's lives. Traditionally used sound-absorbing materials are generally fiber-based porous sound-absorbing materials, such as mineral wool, rock wool, centrifugal glass wool, etc. This type of fiber-based sound-absorbing materials There are problems such as environmental pollution in the production, use, and recycling links; in addition, during the use process, the sound-absorbing material will sink due to moisture and pulverization of the fiber, which will reduce the acoustic performance. [0003] Therefore, a new type of ceramsite sound-absorbing panel has been developed to replace fiber-based sound-absorbing materials. However, the currently used ceramsi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/16C04B26/18C04B26/12C04B26/14C04B38/08C04B38/00C04B41/64C04B111/52
CPCC04B26/12C04B26/122C04B26/14C04B26/16C04B26/18C04B41/4905C04B41/64C04B2111/27C04B2111/52C04B2201/50C04B24/302C04B24/281C04B24/121C04B24/023C04B24/122C04B14/024C04B24/02C04B18/027C04B38/0041C04B24/30C04B24/129C04B24/128C04B24/124C04B41/4535
Inventor 魏海兵李刚刘保权刘超秦雪花李龙王增民董策郭书兴胡俊坡
Owner 天工俐德科技发展有限公司
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