Wool surface treated with hydrophobic agent and acoustic panels made therefrom

A technology of water surface and water repellent, which is applied in the field of cotton sound insulation panels and sound insulation panels, and can solve problems such as expensive production steps

Inactive Publication Date: 2019-12-27
USG INTERIORS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Drying in a heated convection drying oven is often the production limiting step and the most expensive

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0056] Mineral wool is surface treated with linear dimethicone by dipping the cotton into a dilute solution of dimethicone emulsion. Specifically, 0.625 and 2.50 grams of linear polydimethylsiloxane emulsion were mixed with 2000 grams of water and 250 grams of cotton, respectively, to obtain linear polydimethylsiloxane concentrations of about 0.031% by weight and about 0.125% by weight emulsion solution. Immerse the untreated mineral wool completely in the emulsion solution for 10 minutes. The treated mineral wool was dried in an oven at 240°F (about 116°C) for about 4 hours. The treated cotton was tested to determine the loss on ignition (LOI) and to determine the amount of water repellent adhered to the surface of the cotton. The amount of water repellent adhered to the cotton surface by the treated cotton was about 0.13% by weight and 0.45% by weight.

[0057] Fibreboards are prepared from treated mineral wool. Specifically, mineral wool was blended with perlite, starch...

example 2

[0061] Mineral wool having a surface pretreated with linear polydimethylsiloxane was prepared such that the mineral wool represented 0.04% by weight or 0.09% by weight after pretreatment, based on the total weight of the mineral wool. Specifically, the polydimethylsiloxane emulsion was diluted with water to 7.5% and 10% by weight polydimethylsiloxane and pumped through a nozzle at a flow rate of 25 gallons per hour into the cupola collection chamber. The polydimethylsiloxane emulsion solution is atomized and evaporated to cool the fiberized cotton and coat its surface. Fibreboards are prepared from treated mineral wool. Specifically, mineral wool was blended with perlite, starch, newspaper and water to form a uniform slurry. The slurry is dewatered using a Fourdrinier paper machine. The resulting dewatered slurry was dried in an oven at 500°F (260°C) for 1 hour and then in an oven at 300°F (149°C) for 3 hours to form a fiberboard (Treated Board No. 2). A control fiberboard ...

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PUM

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Abstract

A method of preparing a fibrous panel including surface treating a mineral wool with a water repellent agent to provide a water-repellent surface treated mineral wool, admixing the water-repellent surface-treated mineral wool with water to provide a slurry, and dewatering and drying the slurry to provide a fibrous panel. A method of preparing a mineral wool having a surface treated with a water repellent agent including contacting a water repellent agent emulsion with a mineral wool and drying the mineral wool, and a method of preparing a water-repellent surface-treated fibrous panel includingmineral wool having a surface pre-treated with a water repellent agent are also provided.

Description

technical field [0001] The present disclosure generally relates to cotton surfaces treated with hydrophobic agents. More particularly, the present disclosure relates to a method of surface-treating cotton with a hydrophobic agent, a method of forming an acoustic panel including the surface-treated cotton, and an acoustic panel including the surface-treated cotton. Background technique [0002] Acoustic panels (or panels) are specially designed systems intended to improve acoustics by absorbing and / or reducing sound transmission in interior spaces (eg rooms, corridors, conference halls, etc.). While there are many types of acoustical panels, common types of acoustical panels are generally constructed of mineral wool fibers, fillers, colorants, and binders, as disclosed, for example, in US Patent No. 1,769,519. These materials, as well as various other materials, can be used to provide acoustical panels with desired acoustical and other characteristics, such as color and appe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C25/26C04B26/28
CPCC04B26/28C04B30/02C03C25/26C04B14/48C04B2111/52Y02W30/91C04B14/18C04B14/46C04B18/24C04B24/38C04B40/0064C04B20/1051C03C13/06G10K11/162
Inventor W·栾M·布朗俞清S·A·博根C·菲济
Owner USG INTERIORS INC
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