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Novel enhanced mineral cotton acoustic board and preparation method thereof

A mineral wool sound-absorbing panel, a new type of technology, applied in the field of building decoration materials and its preparation, can solve the problems such as the inability of directional growth of whiskers, unsuitable purity, etc., to achieve waste reuse, reduce production costs, and increase bending failure load Effect

Active Publication Date: 2012-04-04
BEIJING NEW BUILDING MATERIALS PLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the gypsum contains more impurities, it will cause the whiskers to fail to grow directional
At present, the preparation of gypsum whiskers usually adopts extremely high-grade gypsum, such as "Method for preparing calcium sulfate whiskers using flue gas desulfurization gypsum" (CN 200810011193.5) patent technology requires that the content of calcium sulfate dihydrate in desulfurization gypsum is higher than 90%, which is not applicable to the purity of the existing desulfurized gypsum in our country

Method used

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  • Novel enhanced mineral cotton acoustic board and preparation method thereof
  • Novel enhanced mineral cotton acoustic board and preparation method thereof
  • Novel enhanced mineral cotton acoustic board and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] according to figure 2 The flowchart shown is for mineral wool board preparation.

[0047] Step 1: Weigh 100 parts by weight of granular cotton, 10 parts by weight of attapulgite clay, 5 parts by weight of modified starch, 0.5 parts by weight of emulsified paraffin, 0.6 parts by weight of polyacrylamide, Al 2 (SO4) 3 0.4 parts by weight, 12 parts by weight of gypsum whiskers. After the above-mentioned raw materials are fully stirred in the batching mixer, they are output to the feeding machine.

[0048] Step 2: The above-mentioned mixed materials are wet-formed in a web forming machine, and cut into large slabs through a cutting machine with high-pressure water.

[0049] Step 3: Transport the above-mentioned slabs to a drying kiln through a distributor, and dry them at 230-285°C for about 2 hours.

[0050] Step 4: Cut the slabs into 600cm×600cm according to the specifications after leaving the kiln, and perform surface finishing. The surface finishing method is the ...

Embodiment 2

[0054] In this example, weigh each component according to the following proportions: weigh 100 parts by weight of granular cotton, 14 parts by weight of attapulgite clay, 8 parts by weight of modified starch, 0.6 parts by weight of emulsified paraffin, and 0.9 parts by weight of polyacrylamide, Al 2 (SO 4 ) 3 0.6 parts by weight, 30 parts by weight of gypsum whiskers. The preparation process is the same as in Example 1, and a 12mm thick functional mineral wool board is obtained.

[0055] Tests show that the new high-strength mineral wool sound-absorbing panel complies with national standards, and compared with traditional mineral wool sound-absorbing panels, the physical and mechanical properties are significantly improved, and the bending failure load is increased by 30%.

Embodiment 3

[0057] In this example, the components were weighed according to the following proportions: 100 parts by weight of granular cotton, 16 parts by weight of attapulgite clay, 9 parts by weight of modified starch, 0.7 parts by weight of emulsified paraffin, 1.0 parts by weight of polyacrylamide, Al 2 (SO4) 3 0.7 parts by weight, 2 parts by weight of gypsum whiskers. The preparation process is the same as in Example 1, and a 12mm thick functional mineral wool board is obtained.

[0058] Tests show that the new high-strength mineral wool sound-absorbing panel complies with national standards, and compared with traditional mineral wool sound-absorbing panels, the physical and mechanical properties are significantly improved, and the bending failure load is increased by 10%.

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Abstract

The invention discloses a novel enhanced mineral cotton acoustic board, which comprises 100 weight parts of mineral cotton, 1.6 to 1.0 weight part of polyacrylamide, 5 to 9 weight parts of modified starch, 10 to 16 weight parts of attapulgite clay, 0.4 to 0.7 weight part of aluminum sulfate, 0.5 to 0.7 part of emulsified paraffin and 2 to 30 parts of gypsum crystal whisker. The invention also discloses a preparation method for the novel enhanced mineral cotton board. The method comprises the following steps of: preparing, forming, drying and performing surface finishing. In the method, the gypsum crystal whiskers are prepared from desulfurized gypsum with low purity, and the strength of the mineral cotton acoustic board is enhanced by adding the gypsum crystal whiskers. The gypsum crystal whiskers have the advantages of high strength, high toughness, temperature resistance, chemical corrosion resistance and the like; and the gypsum crystal whiskers which are used as fine monocrystals have complete internal structures, and due to highly-ordered atomic arrangement, the gypsum crystal whiskers do not almost have the defects of cavity, impurities, granular interfaces and the like of any ordinary material, and the strength of the gypsum crystal whiskers is close to a crystal theoretical value, namely the strength of an interatomic valence bond.

Description

technical field [0001] The invention relates to a building decoration material and a preparation method thereof, in particular to a novel reinforced mineral wool sound-absorbing board and a preparation method thereof. Background technique [0002] Mineral wool board is a new type of building material. Because of its excellent fireproof, waterproof, moisture-proof, sound insulation, heat insulation, and easy deep processing, it is widely used in the decorative ceiling of public buildings at home and abroad, and can also be used in industrial plants. , senior residences and high-rise buildings. [0003] As a fine single crystal, the whisker has a very complete internal structure and highly ordered atomic arrangement, so that it has almost no defects such as holes, impurities, and particle interfaces of ordinary materials, and its strength is close to the theoretical value of the crystal. . Gypsum whiskers are non-toxic and harmless, have the advantages of high strength, good...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04B1/86C04B26/28C04B28/00C04B14/38
CPCC04B26/28C04B2111/52C04B14/383E04B1/86E04B2001/742Y02W30/91
Inventor 王莹赵金平武发德谭丹君王鹏起周建中
Owner BEIJING NEW BUILDING MATERIALS PLC
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