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Glass composition for producing high strength and high modulus fibers

A composite, high-strength technology, applied in fabrics, final product manufacturing, textiles, etc., can solve problems such as hazardous refractory materials

Active Publication Date: 2016-06-22
OWENS CORNING INTELLECTUAL CAPITAL LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

May compromise the refractory, for example by exceeding the maximum service temperature of the refractory or by increasing the rate at which glass corrodes and erodes the refractory to unacceptably high levels

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

Examples

Experimental program
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Embodiment 1

[0054] Example 1: High Performance Glass Composition

[0055] Glass compositions of the present invention were made by mixing reagent grade chemicals in amounts in suitable proportions to achieve final glass compositions having the oxide weight percents listed in Table 4. The raw materials were melted at a temperature of 1650° C. for 3 hours in a platinum crucible 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 (ASTMC965-96(2007)). In a platinum-alloy vessel, the liquidus temperature is measured by exposing the glass to a temperature gradient for 16 hours (ASTMC829-81 (2005)). Density was measured on unannealed bulk glass by the Archimedes method (ASTMC693-93(2008)). The modulus reported in the table below is the average of measurements on 5 individual glass fibers measured according to the procedure outlined in the report "Glass Fiber and Measuring...

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Abstract

A glass composition including SiO2 in an amount from about 69.5 to about 80.0% by weight, Al2O3 in an amount from about 5.0 to about 18.5% by weight, MgO in an amount from about 5.0 to about 14.75% by weight, CaO in an amount from 0.0 to about 3.0% by weight, Li2O in an amount from about 3.25 to about 4.0% by weight, and Na20 in an amount from 0.0 to about 2.0% by weight is provided. Glass fibers formed from the inventive composition may be used in applications that require high strength, high stiffness, and low weight. Such applications include, but are not limited to, woven fabrics for use in forming wind blades, armor plating, and aerospace structures.

Description

[0001] Cross References to Related Applications [0002] This application claims priority and all other benefits to US Provisional Application Serial No. 61 / 360,188, which is hereby incorporated by reference in its entirety. [0003] Technical field and industrial applicability [0004] This invention relates generally to glass compositions, and more particularly to high performance glass compositions which possess acceptable formability and whose components are melted in a refractory melter. Glass fibers formed from the compositions of the present invention possess high strength and improved modulus, and are useful for reinforcing composite matrices where high strength, stiffness, and light weight are desired. Background technique [0005] Glass fibers are manufactured from various raw materials combined in specific ratios to obtain the desired chemical composition. This collection of materials is often referred to as a "glass batch." To form glass fibers, the glass batch ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C3/085C03C3/087C03C13/00
CPCB29K2309/08B29L2031/085C03C3/085C03C3/087C03C13/00Y02P70/50Y10T442/2934Y10T442/2951Y10T442/2992
Inventor D·A·霍夫曼P·B·麦金尼斯
Owner OWENS CORNING INTELLECTUAL CAPITAL LLC
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