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Glass composition for producing high strength and high modulus fibers

A composition, high-strength technology, applied in glass manufacturing equipment, fabrics, wind turbines in the same direction as the wind, etc., can solve problems such as large corrosion

Active Publication Date: 2013-07-31
OWENS CORNING INTELLECTUAL CAPITAL LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The melting temperature of S2-glass is too high relative to common refractories, and ΔΤ is very small (or negative), thereby causing the glass to flow very easily at glass temperatures higher than the liquidus temperature, and for conventional refractories The corrosion is large

Method used

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  • Glass composition for producing high strength and high modulus fibers
  • Glass composition for producing high strength and high modulus fibers
  • Glass composition for producing high strength and high modulus fibers

Examples

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Embodiment 1

[0057] Example 1: High Performance Glass Composition

[0058] Glass compositions of the present invention were made by mixing reagent grade chemicals in amounts to achieve the final glass composition formulation having the oxide weight percents listed in Tables 6 and 7. The starting materials were melted in platinum crucibles at a temperature of 1650° C. for 3 hours in an electrically heated furnace. The forming viscosity (ie, the temperature corresponding to a viscosity of about 1000 poise) was measured using the rotating cylinder method (ASTM C965-96 (2007)). The liquidus temperature was measured by exposing the glass to a temperature gradient in a platinum-alloy boat for 16 hours (ASTM C829-81 (2005)). Density was measured by the Archimedes method (ASTM C693-93(2008)). To manufacture the glass fibers used for testing modulus and strength, cullet from the glass composition was added to the resistance bushing and pulled from a single tip at the bottom of the bushing. The f...

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Abstract

A glass composition including Si02 in an amount from about 70.6 to about 79.6% by weight, AI2O3 in an amount from about 10.0 to 18.5% by weight, MgO m an amount from about 10.0 to about 19.0% by weight, CaO in an amount from about 0.1 to about 5.0% by weight, Li20 in an amount from 0.0 to about 3.0% by weight, and Na20 in an amount from 0.0 to about 3.0% by weight is provided. In exemplary embodiments, the glass composition is free or substantially free of B2O3 and fluorine. The glass fibers have a specific modulus between about 3.40×107 J / kg and 3.6×107 J / kg. Glass fibers formed from the inventive composition possess exceptionally an exceptionally high modulus and a low density, which make them particularly suitable in applications that require high strength, high stiffness, and low weight, such as wind blades and aerospace structures.

Description

[0001] Cross References to Related Applications [0002] This application claims priority and all other benefits of US Provisional Application Serial No. 61 / 394,177. [0003] Technical field and industrial applicability [0004] This invention relates generally to glass compositions, and more particularly to high performance glass compositions possessing acceptable formability and whose components are melted in a refractory melter. Glass fibers formed from the compositions of the present invention possess improved modulus and low density, and are useful for reinforcing composite matrices where high strength, stiffness, and light weight are desired. Background of the invention [0005] Glass fibers are manufactured from various primary raw materials combined in specific proportions to give the desired chemical composition. The collective term for this material is often referred to as "glass batch". To form glass fibers, the glass batch is typically melted in a melter or melt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C3/087C03C13/06C08J5/08
CPCC03C13/00C08K7/14C08J2300/22C03C3/087C03B37/02C03C13/06C08J5/08F03D1/06C08J2300/24Y10T442/2992
Inventor D·A·霍夫曼P·B·麦金尼斯
Owner OWENS CORNING INTELLECTUAL CAPITAL LLC
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