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 of inapplicable purity and directional growth of whiskers, and achieve the effects of reducing production costs, realizing waste reuse, and high strength

Active Publication Date: 2014-04-09
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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  • Enhanced mineral cotton acoustic board and preparation method thereof
  • Enhanced mineral cotton acoustic board and preparation method thereof
  • 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: After the slabs are out of the kiln, they are cut into 600cm×600cm according to the specifications, and the surface finishing is carried out. The surface ...

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

A gypsum whisker, an enhanced mineral wool sound-absorbing plate containing the same and preparation method thereof are disclosed. The gypsum whisker is prepared with desulphurized gypsum having a purity of 75-90% by steps of slurrying, removing impurities, hydrothermally synthesizing and drying. The enhanced mineral wool sound-absorbing plate contains, by weight, 100 parts of mineral wool, 10-16 parts of attapulgite clay, 5-9 parts of modified starch, 0.6-1.0 parts of polyacrylamide, 0.5-0.7 parts of emulsified paraffin wax, 0.4-0.7 parts of aluminum sulfate and 2-30 parts of the gypsum whisker. The method for preparing the plate includes steps of proportioning, molding, drying and surface-finishing. The gypsum whisker has advantages of high strength, good toughness, high temperature resistance and chemical corrosion resistance, etc. By adding the gypsum whisker, the strength of the plate is enhanced and the bending failure load is increased by 10-30%. In addition, the invention makes effective use of industrial waste and decreases production cost.

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 Patents(China)
IPC IPC(8): E04B1/86C04B26/28C04B28/00C04B14/38
CPCE04B2001/742E04B1/86C04B2111/52C04B14/383C04B26/28Y02W30/91
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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