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Light mineral wool slab

A mineral wool board, lightweight technology, applied in the field of mineral wool board to achieve the effect of improving performance and reducing weight

Active Publication Date: 2009-08-05
BEIJING NEW BUILDING MATERIALS PLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, in order to further improve the sound absorption performance of mineral wool panels, the industry has made various attempts, but no more ideal mineral wool panels have been developed.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] First, weigh each material according to 5% of perlite, 70% of rock wool, 5% of flocculant, 5% of starch, 5% of paper, 1% of wet strength agent, 1% of sizing agent, and 8% of aluminum sulfate. Among them, The percentages of each component are percentages by weight, and the flocculant, wet strength agent and sizing agent are conventional flocculants, wet strength agents and sizing agents respectively.

[0012] Second, follow the figure 1 As shown, in a mixing tank 3, 20% of the total weight of appropriate water, perlite, sizing agent and the above-mentioned granular cotton will be added successively to the mixing tank 3 for premixing, and when mixing The liquid generates shear force in the mixing tank 3, and the perlite is fully dispersed in the mixed liquid through the shear force.

[0013] This shear force can be generated by, for example, figure 1 , 2 The rotary mixing mechanism shown is realized, specifically: the rotary mixing mechanism includes a drive motor 1, a...

Embodiment 2

[0019] First, weigh each material according to 30% of perlite, 30% of rock wool, 15% of flocculant, 10% of starch, 10% of paper, 0.2% of wet strength agent, 0.2% of sizing agent, and 4.6% of aluminum sulfate. Among them, The percentages of each component are percentages by weight.

[0020] The specific preparation process is the same as in Example 1, and the weight of the obtained lightweight mineral wool board is only 70% of that of the mineral wool board without adding perlite, and the sound absorption coefficient (NRC) is greater than or equal to 0.55, which is more sound-absorbing than ordinary pure cotton boards. The performance has been greatly improved (generally NRC is around 0.4).

Embodiment 3

[0022] First, weigh each material according to 15% of perlite, 45% of rock wool, 10% of flocculant, 7% of starch, 15% of paper, 0.5% of wet strength agent, 0.5% of sizing agent, and 7% of aluminum sulfate. Among them, The percentages of each component are percentages by weight.

[0023] The specific preparation process is the same as in Example 1. The weight of the obtained lightweight mineral wool board is only 25% of that of the mineral wool board without adding perlite, and the sound absorption coefficient (NRC) is greater than or equal to 0.55, which is more sound-absorbing than ordinary pure cotton boards. The performance has been greatly improved (generally NRC is around 0.4).

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Abstract

The invention discloses a light-weight mineral cotton plate, which comprises the following components in percentage by weight: 5 to 30 percent of perlite, 30 to 70 percent of rock mineral cotton, 5 to 15 percent of flocculant, 3 to 10 percent of starch, 7 to 15 percent of paper, 0.2 to 1 percent of wet strength agent, 0.2 to 1 percent of sizing agent, and 2 to 15 percent of aluminum sulfate. By adding 10 to 30 percent (percentage by weight) of the perlite to a pure mineral cotton plate, the light-weight mineral cotton plate not only can lighten the weight of the mineral cotton plate with the same volume by 20 to 30 percent, but also can greatly improve the performance on sound absorption.

Description

technical field [0001] The invention relates to a mineral wool board. Background technique [0002] Mineral wool board is a new type of building material, which is widely used on the ceiling of buildings because of its excellent properties such as sound absorption, heat insulation, and fire resistance. The mineral wool boards currently used are basically composed of pure mineral wool, so they are relatively heavy in terms of weight. In addition, in order to further improve the sound absorption performance of the mineral wool board, various attempts have been made in the industry, but no more ideal mineral wool board has been developed. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a lightweight mineral wool board, which not only has lighter weight, but also improves the performance of the mineral wool board in terms of sound absorption. [0004] A light mineral wool board of the present invention comprises th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B14/18C04B14/46C04B24/38C04B16/02C04B22/14C04B111/52
Inventor 武发德张同坤曲辉金春来
Owner BEIJING NEW BUILDING MATERIALS PLC
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