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EP1704124A2 - Isolant en fibre de verre haute temperature - Google Patents

Isolant en fibre de verre haute temperature

Info

Publication number
EP1704124A2
EP1704124A2 EP04809759A EP04809759A EP1704124A2 EP 1704124 A2 EP1704124 A2 EP 1704124A2 EP 04809759 A EP04809759 A EP 04809759A EP 04809759 A EP04809759 A EP 04809759A EP 1704124 A2 EP1704124 A2 EP 1704124A2
Authority
EP
European Patent Office
Prior art keywords
amount
weight percent
cao
mgo
feo
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP04809759A
Other languages
German (de)
English (en)
Other versions
EP1704124A4 (fr
Inventor
Albert Lewis
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Glass Inc
Original Assignee
Glass Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US10/667,179 external-priority patent/US6998361B2/en
Application filed by Glass Inc filed Critical Glass Inc
Publication of EP1704124A2 publication Critical patent/EP1704124A2/fr
Publication of EP1704124A4 publication Critical patent/EP1704124A4/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C3/00—Glass compositions
    • C03C3/04—Glass compositions containing silica
    • C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
    • C03C3/083—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound
    • C03C3/085—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound containing an oxide of a divalent metal
    • C03C3/087—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound containing an oxide of a divalent metal containing calcium oxide, e.g. common sheet or container glass
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C13/00—Fibre or filament compositions

Definitions

  • the present invention relates to glass compositions and particularly to glass compositions having good fiberizing characteristics, high strength, high durability at high temperatures, and high modulus of elasticity.
  • High temperature glass compositions have heretofore been produced, but they are subject to the shortcomings of having a short working temperature range or being too expensive to produce due to the high costs of raw material and/or energy reguirements .
  • Fibers for aircraft insulation are of particular importance, particularly for commercial aircraft.
  • the Federal Aviation Administration has long dictated aircraft to be made safer.
  • Aircraft have been destroyed and people's lives lost by fire, and crashes. Examples are an MD-11 which burned and was destroyed in Canada, and an MD-80 which was destroyed by fire and crashed in Texas, USA, and many others. These crashes were blamed on insulation blankets which caught fire and burned.
  • the blankets embodied fibers which were relatively low-temperature fibers and so melted at high temperatures.
  • An object of the invention is to provide a glass which has good insulation and acoustical properties, high strength, a high modulus of elasticity and high temperature resistance properties. Another object is to provide a glass which has high strength and which can be drawn into long, strong glass fibers.
  • the glass compositions of this invention can be formed into long and/or short, stable glass fibers.
  • the present invention relates to glass compositions and particularly to glass compositions having good fiberizing characteristics, high strength, high durability at high temperatures, and high modulus of elasticity.
  • the glass specimens were prepared utilizing a specific raw material which included silica, alumina, titania, zirconia and other oxides.
  • Glasses of this invention were prepared by melting raw batch material in the following approximate ranges of temperatures: between about 2,600°F to about 2,900°F, utilizing conventional refractory containers.
  • Glass compositions according to the invention have a liquidous temperature of approximately 2,400°F, which is suitable for glass forming.
  • the glass can be formed into fibers for insulation and acoustical parts using the centrifugal rotary process (vertical and horizontal), or blowing and flame processes. It can also be drawn into continuous and staple fibers.
  • the material of the invention differs from other high temperature glasses in that, the fibers of the invention differ from prior art in that the material of the invention has good resistance to devitrification at the forming temperature, and requires lower processing energy than other high temperature fibers .
  • the molten glass may also be formed into fibers on a conventional drawing wheel, at speeds up to 12,000 feet per minute at temperatures between 2,400°F to about 2,900°F. Speeds between about 3,000 to about 10,000 feet per minute are preferable in order to provide optimum filament properties. Fibers may be drawn from about 9 microns to about 14 microns in diameter. Diameters of about 9 microns are preferred. Fibers were produced using the centrifugal, blowing and flame processes.
  • compositions according to the present invention provide a reduction of cost of approximately 20% when compared to other high temperature fibers, because of the use of less expensive raw materials, and lower energy requirements in processing them into glass fibers.
  • less binder is required than in known, 'commercially available compositions due to the improved surface condition and high strength off the fibers. Insulation fiber diameters may range from about
  • Fibers according to the present invention, for insulation blankets may have the following components having the following ranges of percentages:
  • Glass fibers wherein substitution for deleted respective oxides in certain glass fiber compositions defined in the original application, provide improved properties and excellent results. Glass fibers were utilized wherein certain deletions of respective oxides were detected and/or new oxides were added to enhance glass fiber properties, such as enhanced moisture resistance, acoustical properties, and strength. It was determined that these oxides may be substituted for or used in combination with certain oxides specified in the inventor's parent application. These newly-utilized oxides include lithium oxide (Li stigma0) and boron oxide (B_0_) .
  • Oxides Oxide Weight %
  • raw materials include boric acid, borax, basalt, cullet, dolime, lithium carbonate, and colemanite.
  • boric acid boric acid
  • borax borax
  • basalt basalt
  • cullet dolime
  • lithium carbonate and colemanite.
  • Set forth below are typical batch blends that were mixed and melted in a refractory furnace, the resultant glasses being successfully fiberized into continuous insulation glass fibers.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Glass Compositions (AREA)

Abstract

L'invention concerne des compositions de verre améliorées pour fibres de verre utilisées généralement pour des couvertures ou des contenants résistant au feu auxquels elles confèrent une résistance élevée au perçage à des températures supérieures à 2,300 DEG F, et contenant généralement 10,23 % à 81,81 % de silice, 2,0 % à 25,91 % d'alumine, 0 % à 12,0 % d'oxyde de sodium, 0 % à 6,0 % d'oxyde de potassium, 3,0 % à 15,0 % d'oxyde de calcium, 1,80 % à 10,50 % d'oxyde de magnésium, 1,0 % à 18,0 % d'oxyde ferreux + ferrique, et 0 % à 4,0 % de dioxyde de titane. Les compositions de verre améliorées peuvent contenir 0 % à 9 % d'oxyde de lithium, 0 % à 9 % d'oxyde de bore, 0 % à 5,0 % de zircone, 0 % à 6,0 % d'oxyde de manganèse, et enfin, 0 % à 4,0 % d'oxyde phosphorique.
EP04809759A 2003-09-19 2004-09-15 Isolant en fibre de verre haute temperature Withdrawn EP1704124A4 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/667,179 US6998361B2 (en) 2002-03-04 2003-09-19 High temperature glass fiber insulation
PCT/US2004/030381 WO2005033029A2 (fr) 2002-03-04 2004-09-15 Isolant en fibre de verre haute temperature

Publications (2)

Publication Number Publication Date
EP1704124A2 true EP1704124A2 (fr) 2006-09-27
EP1704124A4 EP1704124A4 (fr) 2008-03-19

Family

ID=36847778

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04809759A Withdrawn EP1704124A4 (fr) 2003-09-19 2004-09-15 Isolant en fibre de verre haute temperature

Country Status (1)

Country Link
EP (1) EP1704124A4 (fr)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5962354A (en) * 1996-01-16 1999-10-05 Fyles; Kenneth M. Compositions for high temperature fiberisation
TW450948B (en) * 1996-10-16 2001-08-21 Nitto Glass Fiber Mfg Glass fiber of low dielectric constant
JP4269194B2 (ja) * 1998-04-14 2009-05-27 日東紡績株式会社 低誘電率ガラス繊維
US20030166446A1 (en) * 2002-03-04 2003-09-04 Albert Lewis High temperature glass fiber insulation

Also Published As

Publication number Publication date
EP1704124A4 (fr) 2008-03-19

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