Ocv Intellectual Capital, LLC

Owens Corning Intellectual Capital, LLC

Owens Corning Fiberglas Technology, Inc.

Peter Bernard McGinnis

Douglas Alan Hofmann

Michelle L Korwin-Edson

John W Wingert

David J Baker

Byron Bemis

Douglas A Hoffmann

Charles F Rapp

Anne Berthereau

Rebecca Elaine Cochran

David Baker

A glass composition is provided that includes about 55.0 to 60.4% by weight SiO, about 19.0 to 25.0% by weight AlO, about 8.0 to 15.0% by weight MgO, about 7 to 12.0% by weight CaO, less than 0.5% by weight LiO, 0.0 to about 1.0% by weight NaO, and 0 to about 1.5% by weight TiO. The glass composition has a fiberizing temperature of no greater than about 2,500° F. Glass fibers formed from the inventive composition may be used in applications that require high stiffness, and low weight. Such applications include woven fabrics for use in forming wind blades and aerospace structures.

High performance fiberglass composition

A glass composition is provided that includes about 55.0 to 60.4% by weight SiO, about 19.0 to 25.0% by weight AlO, about 8.0 to 15.0% by weight MgO, about 7 to 12.0% by weight CaO, less than 0.5% by weight LiO, 0.0 to about 1.0% by weight NaO, and 0 to about 1.5% by weight TiO. The glass composition has a fiberizing temperature of no greater than about 2,500&#xb0; F. Glass fibers formed from the inventive composition may be used in applications that require high stiffness, and low weight. Such applications include woven fabrics for use in forming wind blades and aerospace structures.

A method of forming high strength glass fibers in a refractory-lined glass melter, products made there from and batch compositions suited for use in the method are disclosed. The glass composition for use in the method of the present invention is up to about 64-75 weight percent SiO, 16-24 weight percent AlO, 8-12 weight percent MgO and 0.25-3 weight percent RO, where RO equals the sum of LiO and NaO, has a fiberizing temperature less than about 2650&#xb0; F., and a &#x394;T of at least 80&#xb0; F. By using oxide-based refractory-lined furnaces the cost of production of glass fibers is substantially reduced in comparison with the cost of fibers produced using a platinum-lined melting furnace. High strength composite articles including the high strength glass fibers are also disclosed.

Method of manufacturing S-glass fibers in a direct melt operation and products formed therefrom

A glass composition including SiOin an amount from about 70.0 to about 78.2% by weight, AlOin an amount from about 18.6 to about 26.2% by weight, MgO in an amount from about 3.1 to about 10.7% by weight, CaO in an amount from 0.0 to about 7.6% by weight, LiO in an amount from about 0.1 to about 5.0% by weight, and NaO in an amount from 0.0 to about 0.2% by weight is provided. In exemplary embodiments, the glass composition is free or substantially free of BOand fluorine. The glass fibers have a specific strength between about 1.6&#xd7;10J/kg and 2.24&#xd7;10J/kg and a specific modulus between about 3.3&#xd7;10J/kg and 3.7&#xd7;10J/kg. Glass fibers formed from the inventive composition possess exceptionally high specific strength and a low density, which make them particularly suitable in applications that require high strength, high stiffness, and low weight, such as in wind blades and aerospace structures.

Glass composition for producing high strength and high modulus fibers

A method of forming high strength glass fibers in a glass melter substantially free of platinum or other noble metal materials, products made there from and batch compositions suited for use in the method are disclosed. One glass composition for use in the present invention includes 50-75 weight % SiO, 13-30 weight % AlO, 5-20 weight % MgO, 0-10 weight % CaO, 0 to 5 weight % RO where RO is the sum of LiO, NaO and KO, has a higher fiberizing temperature, e.g. 2400-2900&#xb0; F. (1316-1593&#xb0; C.) and/or a liquidus temperature that is below the fiberizing temperature by as little as 45&#xb0; F. (25&#xb0; C.). Another glass composition for use in the method of the present invention is up to about 64-75 weight percent SiO, 16-24 weight percent AlO, 8-12 weight percent MgO and 0.25-3 weight percent RO, where RO equals the sum of LiO, NaO and KO, has a fiberizing temperature less than about 2650&#xb0; F. (1454&#xb0; C.), and a &#x394;T of at least 80&#xb0; F. (45&#xb0; C.). A forehearth for transporting molten glass from the glass melter to a forming position is disclosed. By using furnaces and/or forehearths substantially free of platinum or other noble metal materials, the cost of production of glass fibers is significantly reduced in comparison with the cost of fibers produced using a melting furnace lined with noble metal materials. High strength composite articles including the high strength glass fibers are also disclosed.

Method of manufacturing high strength glass fibers in a direct melt operation and products formed there from

Glass fibers are presented having a composition of about 48-54 weight percent SiO; about 7-14 weight percent AlO, about 10-16 weight percent CaO, about 7-13 weight percent TiO, and about 9-19 weight percent ZnO. A composite material is also provided formed of a polymer matrix and glass fibers of the present invention. The fibers of the present invention have a refractive index between about 1.60 and 1.66 at 590 nm.

High strength glass fibers with controlled refractive index, composition for making such fibers and composite materials formed therefrom

Improved glass batch compositions and processes of fiberizing the compositions to form fibers are provided. The batch of the present composition can include: 40-60 wt % SiO; 15-50 wt % AlO; 0-30 wt % MgO; 0-25 wt % CaO; 0-5 wt % LiO; 0-9 wt % BO; and 0-5 wt % NaO. The fibers formed of the compositions may have a Young's modulus of greater than 82.7 GPa (12 MPSI). The fibers may also have good biosolubility (k), of at least 100 ng/cm/hour.

Glass composition for the manufacture of fibers and process

A glass composition including SiOin an amount from about 69.5 to about 80.0% by weight, AlOin 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, LiO 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.

A glass composition including SiOin an amount from 60.0 to 73.01% by weight, AlOin an amount from about 13.0 to about 26.0% by weight, MgO in an amount from about 5.0 to about 12.75% by weight, CaO in an amount from about 3.25 to about 4.0% by weight, LiO in an amount from about 3.25 to about 4.0% by weight, and NaO in an amount from 0.0 to about 0.75% 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.

A method of forming high strength glass fibers in a continuous system is provided. The method includes supplying a glass batch to a glass melting furnace lined with a material substantially free of noble metals. The glass batch comprises about 50-about 75 weight percent SiO, about 15-about 30 weight percent Al2O3, about 5-about 20 weight percent MgO, about 0-about 10 weight percent CaO, about 0.25-about 5 weigh percent RO. The method further includes melting the glass batch in the furnace and forming a pool of molten glass in contact with the furnace glass contact surface, transporting the molten glass from the furnace to the bushing using a forehearth that is at least partially lined with a material substantially free of noble metal materials, discharging the molten glass from the forehearth into the bushing; and forming the molten glass into continuous fibers.

A method of forming high strength glass fibers in a refractory-lined glass meter, products made there from and batch compositions suited for use in the method are disclosed. The glass composition for use in the method of the present invention is up to about 64-75 weight percent SiO, 16-24 weight percent AlO, 8-12 weight percent MgO and 0.25-3 weight percent RO, where RO equals the sum of LiO and NaO, has a fiberizing temperature less than about 2650&#xb0; F., and a &#x394;T of at least 80&#xb0; F. By using oxide-based refractory-lined furnaces the cost of production of glass fibers is substantially reduced in comparison with the cost of fibers produced using a platinum-lined melting furnace. High strength composite articles including the high strength glass fibers are also disclosed.

Method of manufacturing S-glass fibers in a direct melt operation and products formed there from

A glass composition including SiOin an amount from 30.0 to 40.0% by weight, AlOin an amount from 15.0 to 23.0% by weight, BOin an amount from 0.0 to 15.0% by weight, KO in an amount from 0.0 to 5.0% by weight, LaOin an amount from 0.0 to 30.0% by weight, LiO in an amount from 0.0 to 3.0% by weight, NaO in an amount from 0.0 to 4.0% by weight, NbOin an amount from 0.0 to 10.0% by weight, TiOin an amount from 0.0 to 7.5% by weight, WOin an amount from 0.0 to 10.0% by weight, YOin an amount from 15.0 to 35.0% by weight, and RO (one or more of MgO, CaO, SrO, and BaO) in an amount from 0.0 to 7.5% by weight is provided. Glass fibers formed from the composition have a refractive index between 1.55 and 1.69.

High refractive index glass composition

A glass composition including SiOin an amount from 74.5 to 80.0% by weight, AlOin an amount from 5.0 to 9.5%&#x3e;&#x3e; by weight, MgO in an amount from 8.75 to 14.75% by weight, CaO in an amount from 0.0 to 3.0% by weight, LiO in an amount from 2.0 to 3.25% by weight, NaO in an amount from 0.0 to 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 woven fabrics for use in forming wind blades, armor plating, and aerospace structures.

Growing community of inventors

Gahanna, OH, United States of America

Peter Bernard McGinnis