Use of Pulverized Glass in a Composite Material

• US 20090272298A1
• Filed: 11/23/2006
• Published: 11/05/2009
• Est. Priority Date: 11/23/2005
• Status: Active Grant

• Current Assignee: Lars Borthy Petersen
• Original Assignee: Lars Borthy Petersen
• Inventors: Petersen, Lars Borthy
• Granted Patent: US 8,177,907 B2
• Time in Patent Office: Days
• US Class Current: 106/716
• CPC Class Codes: C04B 14/06 Quartz; Sand
• CPC Class Codes: C04B 14/062 Microsilica, e.g. colloïdal silica preparing microsilica slurries or suspensions C04B18/148
• CPC Class Codes: C04B 14/22 Glass ; Devitrified glass
• CPC Class Codes: C04B 14/386 Carbon carbon nanotubes C04B14/026
• CPC Class Codes: C04B 14/42 Glass
• CPC Class Codes: C04B 14/48 Metal
• CPC Class Codes: C04B 16/06 fibrous
• CPC Class Codes: C04B 18/24 Vegetable refuse, e.g. rice husks, maize-ear refuse; Cellulosic materials, e.g. paper , cork
• CPC Class Codes: C04B 20/008 Micro- or nanosized fillers, e.g. micronised fillers with particle size smaller than that of the hydraulic binder colloidal silica C04B14/062 ; silica fume C04B18/146
• CPC Class Codes: C04B 2103/30 Water reducers, plasticisers, air-entrainers, flow improvers
• CPC Class Codes: C04B 2111/802 White cement
• CPC Class Codes: C04B 26/02 Macromolecular compounds
• CPC Class Codes: C04B 26/16 Polyurethanes
• CPC Class Codes: C04B 28/04 Portland cements
• CPC Class Codes: C08K 3/40 Glass
• CPC Class Codes: Y02W 30/91 Use of waste materials as fillers for mortars or concrete

Abstract

The use of pulverized glass having a particle size of 0 nm to 100 μm as an ingredient in a composite material, said composite material is obtained by mixing a base component and a hardener, is disclosed. The pulverized glass is useful in composite materials, such as either a cement-based material which is to be mixed with water as a hardener or in epoxies, acrylics, polyurethanes, butylenes or silicones.

Claims

1. Use of pulverized glass having a particle size below 100 μ

m as an ingredient in a composite material, said composite material is obtained by mixing a base component and a hardener;

wherein preferably, the pulverized glass is included in the base component, wherein the most abundant particle sizes of the pulverised glass lies within the range of 0.1 μ

m to 0.4 μ

m.

2. Use according to claim 1, wherein the base component is either a cement-based material which is to be mixed with water as a hardener or wherein the base component comprises epoxies, acrylics, polyurethanes, butylenes or silicones to be mixed with a hardener conventionally used as a hardener with such material.

3. A base component for use in a composite material comprising pulverized glass having a particle size of 0 nm to 100 μ

m, wherein the most abundant particle sizes of the pulverised glass lies within the range of 0.1 μ

m to 0.4 μ

m.

4. A base component for use in a composite material according to claim 3, wherein the content of the pulverized glass is between 2 and 94 wt % of the base component.

5. A base component for use in a composite material according to claim 3, comprising white Portland cement;

optionally also comprising quartz sand having grains of sizes of 0.25 to 4 mm and/or furthermore optionally comprising micro silica having a particle size of 0.1 to 0.4 μ

m

6. A base component for use in a composite material according to claim 3 further comprising fibres, preferably glass, polymer, steel, carbon or cellulose based fibres.

7. A base component for use in a composite material according to claim 3, wherein the base component has the composition:

up to 400 kg/m³ portland cement;

from 75 to 150 kg/m³ quartz sand having grain sizes of 0.25 to 1 mm;

from 400 to 600 kg/m³ quartz sand having grain sizes of 1 to 4 mm;

from 50 to 1100 kg/m³ pulverized glass having particle sizes below 100 μ

m;

optionally from 0 to 3% fibres, preferably glass, polymer, steel, carbon or cellulose based fibres;

optionally additives, such as plasticizers etc;

wherein the most abundant particle sizes of the pulverised glass lies within the range of 0.1 μ

m to 0.4 μ

m.

8. Use of a base component according to claim 7 for the production of products such as tiles, roof tiles, furniture or part of furniture, tabletops, steps for stairs, and other similar products.

9. A composite product comprising a base component according to claim 5 as part of a composite material.

10. A composite product for use as a joint filler comprising a base component according to claim 3, wherein the base component comprises a conventional polyurethane base.