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Fly-ash fiber heat-insulation acoustic board and preparation method thereof

A technology of fly ash fiber and sound-absorbing panels, applied in sustainable waste treatment, solid waste management, climate sustainability, etc., can solve problems such as poor sound absorption and heat insulation, mildew, and environmental pollution

Active Publication Date: 2012-12-19
SHANGHAI HUAMING HI TECH GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, various indoor top surface decoration materials appearing on the market are generally made of aluminum, rock wool, calcium carbonate or gypsum ceiling boards, but there are some disadvantages: the surface of aluminum ceiling boards is smooth, the visual effect is not good, And the cost is high; the rock wool ceiling board is light and has good sound absorption effect, but it contains plant starch or formaldehyde carcinogens, which is harmful to human health; calcium carbonate or gypsum board has good fire and flame retardancy, but the sound absorption and heat insulation effect is not good.
However, the starch in the mineral wool sound-absorbing panels added with corn starch can easily breed bacteria after absorbing moisture and cause mildew, which seriously affects its service life; Contains organic carcinogens such as formaldehyde or benzene, which will pollute the environment and damage human health

Method used

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  • Fly-ash fiber heat-insulation acoustic board and preparation method thereof
  • Fly-ash fiber heat-insulation acoustic board and preparation method thereof
  • Fly-ash fiber heat-insulation acoustic board and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Fly ash fiber 92.0wt%

[0046] Polyvinyl acetate emulsion (solid content 48wt%) 5.0wt%

[0047] Aqueous paraffin emulsion (solid content 30wt%) 3.0wt%

[0048] Prepare the fly ash fiber into a water-based slurry with a concentration of 2wt%, then add polyvinyl acetate emulsion and water-based paraffin emulsion, stir and disperse evenly, pour it into a mold, squeeze to remove excess water, and obtain a wet billet , dried naturally to obtain fly ash fiber insulation and sound-absorbing panels. The fly ash fiber thermal insulation and sound-absorbing board is obtained after cutting and removing edges, planing, spraying, drying and other procedures.

[0049] Its volume density, bending failure load, noise reduction coefficient, thermal resistance, and combustion performance are all tested according to the JC / T670-2005 standard, and the result is: volume density 350kg / m 3 , bending failure load 80N, noise reduction coefficient 0.60, thermal resistance 0.60(m 2 ·K) / W, com...

Embodiment 2

[0051] Fly Ash Fiber 93.5wt%

[0052] Vinyl acetate-ethylene copolymer emulsion (solid content 55wt%) 4.0wt%

[0053] Polyacrylamide cationic surfactant (cationicity 40%) 2.5wt%

[0054]Prepare the fly ash fiber into a water-based slurry with a concentration of 1.5wt%, then add vinyl acetate-ethylene copolymer emulsion and polyacrylamide cationic surfactant, stir and disperse evenly, pour it into a mold, and squeeze to remove excess moisture content to obtain a wet billet. During the drying process, embossing and other treatments are carried out on the wet slab, and the fly ash fiber insulation and sound-absorbing board can be obtained after drying. Its volume density, bending failure load, noise reduction coefficient, thermal resistance, and combustion performance are all tested according to the JC / T 670-2005 standard, and the result is: volume density 380kg / m 3 , bending failure load 82N, noise reduction coefficient 0.45, thermal resistance 0.55(m 2 ·K) / W, combustion per...

Embodiment 3

[0056] Fly Ash Fiber 87.9wt%

[0057] Waterborne polyurethane (solid content 35wt%) 10.0wt%

[0058] Lauryl dimethyl betaine 2.1wt%

[0059] The fly ash fiber is formulated into a water-based slurry with a concentration of 2.5wt%, then water-based polyurethane (solid content 35wt%) is added, and dodecyl dimethyl betaine is added, and it is poured into the mold after stirring and dispersing evenly , pressed into shape, after natural drying, through cutting, planing, spraying, drying and other procedures, and finally get the fly ash fiber insulation sound-absorbing board. Its bulk density, bending failure load, noise reduction coefficient, thermal resistance, and combustion performance are all tested according to the JC / T 670-2005 standard, and the result is: bulk density 400kg / m 3 , bending failure load 85N, noise reduction coefficient 0.65, thermal resistance 0.55(m 2 ·K) / W, combustion performance Class A non-combustible.

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Abstract

The invention provides a fly-ash fiber heat-insulation acoustic board and a preparation method thereof. Raw materials and weight percentages are as follows: 80.0-94.8 wt% of a fly-ash fiber, 3.1-10.0 wt% of an adhesive and 2.1-10.0 wt% of an additive. The fly-ash fiber heat-insulation acoustic board employs the fly-ash fiber as a matrix, wherein the raw material of the fly-ash fiber is fly ashes of industrial solid waste of power plants. The obtained product has volume density of 350-450 kg / m<3>, noise reduction coefficient of 0.45-0.65 and thermal resistance of 0.40-0.60 (m<2>.K) / W. The combustion performance of the fly-ash fiber heat-insulation acoustic board reaches to the requirements of A-grade non-combustible standard. The fly-ash fiber heat-insulation acoustic board has no materials poisonous and harmful to human and environment, such as formaldehyde, benzenes and the like, and can be widely applied in furred ceilings of indoor top surfaces and decoration and heat-insulation of walls for restaurants, hotels, commercial buildings, dwelling houses, office buildings, auditoriums, markets, movie theaters, subways, stations, factories, hospitals, airports, tunnels, etc.

Description

technical field [0001] The invention relates to an inorganic fiber fire-proof heat-insulating and sound-absorbing board and a preparation method thereof, in particular to a fly ash fiber heat-insulating and sound-absorbing board and a preparation method thereof. Background technique [0002] In recent years, with the continuous improvement of people's living environment requirements, the harm of noise pollution to people's physical and mental health has been increasingly recognized by the public, and it has become a hot issue in the process of environmental governance. In the process of noise pollution control, the use of sound-absorbing materials is one of the most practical measures for noise pollution control. [0003] At present, various indoor top surface decoration materials appearing on the market are generally made of aluminum, rock wool, calcium carbonate or gypsum ceiling boards, but there are some disadvantages: the surface of aluminum ceiling boards is smooth, th...

Claims

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Application Information

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IPC IPC(8): C04B26/10C04B18/08
CPCY02W30/91
Inventor 蔡梦军陈建定李鹏王汉斌马新胜吴秋芳
Owner SHANGHAI HUAMING HI TECH GRP
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