WO1983001947A1 - Fibres de verre resistantes aux alkalis - Google Patents

Fibres de verre resistantes aux alkalis Download PDF

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Publication number
WO1983001947A1
WO1983001947A1 PCT/US1982/001670 US8201670W WO8301947A1 WO 1983001947 A1 WO1983001947 A1 WO 1983001947A1 US 8201670 W US8201670 W US 8201670W WO 8301947 A1 WO8301947 A1 WO 8301947A1
Authority
WO
WIPO (PCT)
Prior art keywords
alkali
fibers
percent
resistant glass
glass fibers
Prior art date
Application number
PCT/US1982/001670
Other languages
English (en)
Inventor
STATES OF AMERICA as represented by ... UNITED
John D. Mackenzie
Tetsuro Horiuchi
Original Assignee
Us Commerce
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
Application filed by Us Commerce filed Critical Us Commerce
Priority to JP83500191A priority Critical patent/JPS58502054A/ja
Publication of WO1983001947A1 publication Critical patent/WO1983001947A1/fr

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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
    • C03C13/00—Fibre or filament compositions
    • C03C13/001—Alkali-resistant fibres

Definitions

  • This invention relates to novel alkali-resistant glass fibers, and their preparation.
  • the fibers find particular use in strengthening cement and concrete products, and may find extensive use as substitutes for asbestos in such products.
  • Asbestos fibers have long been used to strengthen cement and concrete products. However, since the recognition of the toxicity of asbestos there have been many attempts to develop fibers to replace it.
  • One of the most important properties of fibers for use in cement and concrete products is resistance to chemical attack by the alkali in the cement mixtures. Because the diameter of the fibers is usually very small, e.g., about 2 to 20 micrometers, a relatively small degree of attack can cause a large decrease in mechanical strength.
  • the fibers are prepared by means of procedures conventionally employed in preparation of glass fibers, i.e., melting of the appropriate admixture of raw materials, followed by drawing or spinning to form the fibers.
  • compositions can be readily, and inexpensively, formed from mixtures of naturally occurring slate and limestone.
  • Suitable raw materials are not, however, limited to freshly mined slate and limestone, but may include waste slate and waste marble, e.g., materials left over from mechanical working of slate and marble. In addition, other materials such as basalt may be used.
  • the raw materials are initally ground, or otherwise reduced, to a suitable particle size, e.g., about 50 to 200 mesh, and are then admixed and melted in suitable refractory vessels such as pots or crucibles of refractory materials such as chromite, alumina, platinum, etc.
  • Suitable melt temperatures are obtained by conventional means, such as electric furnaces or gas furnaces, and will generally range from about 1300 to 1400°C, with the optimum depending on various factors such as the specific composition of the melt, raw materials employed, and desired properties of the product fibers.
  • the admixture is desirably maintained at the melt temperature for a period of about 3 to 5 hours to ensure complete fusion of the ingredients.
  • the molten mixture is then cooled to a temperature, generally about 1100 to 1250°C, suitable for working, and fibers are formed by conventional means such as drawing at high speed through a fine orifice, or by spinning to form a glass wool. Conventional means, such as contacting with screens of appropriate mesh size, are also employed to reduce the fibers to suitable lengths. Optimum diameters and lengths of the fibers will vary with the specific use; however, diameters of about 8 to 12 microns and lengths of about 1/8 to 1/2 inch are generally most suitable for use in cement and concrete products. Fibers thus prepared have been found to have tensil strengths of about 80,000 to 150,000 psi and densities of about 2.75 to 2.95 gm/cc. Alkali resistance of the fibers has been found to be much superior to Pyrex glass and as good as commercially available alkali-resistant glasses.
  • Glass fibers were prepared from three mixtures of Vermont slate and limestone, and were compared with fibers of a commercially available alkali-resistant (AR) glass and pyrex glass.
  • the mixtures of slate and limestone consisted, respectively, of 40% slate and 60% limestone, 50% each of slate and limestone, and 60% slate and 40% limestone.
  • Chemical compositions, in weight %, of the slate-limestone mixtures, as well as the AR and pyrex glasses, are given in Table 1.
  • the slate and limestone were ground to a particle size of 100 mesh and thoroughly mixed by means of a ball- mill.
  • the mixtures were then melted at 1350°C in air, and were maintained at this temperature for a period of about 3-5 hrs .
  • the melt was then cooled to 1150°C, and fibers of a diameter of 20 microns were formed by drawing.
  • the fibers were reduced to lengths of 1/2 to 1 inch by means of mechanical cutters .
  • These fibers , and similar fibers of AR and pyrex glasses were then tested for alkali resistance by reaction in 5% NaOH solution at 90°C for 4 hours. Results of the tests, as well as properties of the glasses are shown in Table 2. It is evident from the data of the table that the glasses of the invention are much superior to Pyrex and are as good as commercially available AR glasses.

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

Des fibres de verre résistantes aux alkalis comprennent environ 30 à 60 % de SiO2, 15 à 20 % de Al2O3, 20 à 30 % de CaO et 1 à 10 % de Fe2O3. Les fibres peuvent être obtenues à partir de matériaux bon marché tels que l'ardoise et la pierre à chaux.
PCT/US1982/001670 1981-12-04 1982-11-30 Fibres de verre resistantes aux alkalis WO1983001947A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP83500191A JPS58502054A (ja) 1981-12-04 1982-11-30 耐−アルカリ性ガラス繊維

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US32753881A 1981-12-04 1981-12-04
US327,538811204 1981-12-04

Publications (1)

Publication Number Publication Date
WO1983001947A1 true WO1983001947A1 (fr) 1983-06-09

Family

ID=23276955

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1982/001670 WO1983001947A1 (fr) 1981-12-04 1982-11-30 Fibres de verre resistantes aux alkalis

Country Status (3)

Country Link
EP (1) EP0095490A1 (fr)
JP (1) JPS58502054A (fr)
WO (1) WO1983001947A1 (fr)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1985002393A1 (fr) * 1983-11-23 1985-06-06 Atlantic Richfield Company Verres a base d'aluminosilicate-oxyde de calcium, melanges produisant du verre et procedes de production
WO1985002395A1 (fr) * 1983-11-23 1985-06-06 Atlantic Richfield Company Verre modifie par de l'oxyde de bore et resistant aux substances alcalines
EP0159173A2 (fr) * 1984-04-10 1985-10-23 Walt Disney Productions Composition de verre
GB2237016A (en) * 1989-09-07 1991-04-24 Dennis Roy Prosser Glass-ceramic material and production thereof
WO1997029057A1 (fr) * 1996-02-06 1997-08-14 Isover Saint-Gobain Composition a base de fibres minerales
WO1997031870A1 (fr) * 1996-02-29 1997-09-04 Rockwool International A/S Fibres vitreuses artificielles
US6043170A (en) * 1996-02-06 2000-03-28 Isover Saint-Gobain Mineral fiber composition
EP1038846A1 (fr) * 1999-03-22 2000-09-27 Armstrong World Industries, Inc. Composition de laine minerale présentant une biosolubilité et une thermostabilité ameliorées
WO2000073233A1 (fr) * 1999-05-28 2000-12-07 Rockwool International A/S Production de fibres minerales
WO2007138149A1 (fr) * 2006-06-01 2007-12-06 Universidade De Santiago De Compostela Procédé d'obtention de fibres vitreuses à partir de résidus d'ardoise et d'autres résidus industriels
US7855170B2 (en) 2008-05-20 2010-12-21 Intevep, S.A. Homogenous synthetic mud-to-cement cementing glasses
US8993462B2 (en) 2006-04-12 2015-03-31 James Hardie Technology Limited Surface sealed reinforced building element

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3887386A (en) * 1966-07-11 1975-06-03 Nat Res Dev Glass fibres and compositions containing glass fibres
US4002482A (en) * 1975-02-14 1977-01-11 Jenaer Glaswerk Schott & Gen. Glass compositions suitable for incorporation into concrete
US4095986A (en) * 1976-07-15 1978-06-20 Director-General Of The Agency Of Industrial Science And Technology Alkali-resistant glass compositions
US4153439A (en) * 1976-07-22 1979-05-08 Rockwool Aktiebolaget Method for the production of mineral wool, especially for use in basic milieu
US4205992A (en) * 1978-01-02 1980-06-03 Rockwool International A/S Alkali resistant, synthetic, mineral fibres

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3887386A (en) * 1966-07-11 1975-06-03 Nat Res Dev Glass fibres and compositions containing glass fibres
US4002482A (en) * 1975-02-14 1977-01-11 Jenaer Glaswerk Schott & Gen. Glass compositions suitable for incorporation into concrete
US4095986A (en) * 1976-07-15 1978-06-20 Director-General Of The Agency Of Industrial Science And Technology Alkali-resistant glass compositions
US4153439A (en) * 1976-07-22 1979-05-08 Rockwool Aktiebolaget Method for the production of mineral wool, especially for use in basic milieu
US4205992A (en) * 1978-01-02 1980-06-03 Rockwool International A/S Alkali resistant, synthetic, mineral fibres

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1985002395A1 (fr) * 1983-11-23 1985-06-06 Atlantic Richfield Company Verre modifie par de l'oxyde de bore et resistant aux substances alcalines
WO1985002393A1 (fr) * 1983-11-23 1985-06-06 Atlantic Richfield Company Verres a base d'aluminosilicate-oxyde de calcium, melanges produisant du verre et procedes de production
EP0159173A2 (fr) * 1984-04-10 1985-10-23 Walt Disney Productions Composition de verre
EP0159173A3 (fr) * 1984-04-10 1986-10-08 Walt Disney Productions Composition de verre
GB2237016A (en) * 1989-09-07 1991-04-24 Dennis Roy Prosser Glass-ceramic material and production thereof
WO1997029057A1 (fr) * 1996-02-06 1997-08-14 Isover Saint-Gobain Composition a base de fibres minerales
US6043170A (en) * 1996-02-06 2000-03-28 Isover Saint-Gobain Mineral fiber composition
US6156683A (en) * 1996-02-29 2000-12-05 Rockwool International A/S Man-made vitreous fibres
WO1997031870A1 (fr) * 1996-02-29 1997-09-04 Rockwool International A/S Fibres vitreuses artificielles
EP1038846A1 (fr) * 1999-03-22 2000-09-27 Armstrong World Industries, Inc. Composition de laine minerale présentant une biosolubilité et une thermostabilité ameliorées
WO2000073233A1 (fr) * 1999-05-28 2000-12-07 Rockwool International A/S Production de fibres minerales
US8993462B2 (en) 2006-04-12 2015-03-31 James Hardie Technology Limited Surface sealed reinforced building element
WO2007138149A1 (fr) * 2006-06-01 2007-12-06 Universidade De Santiago De Compostela Procédé d'obtention de fibres vitreuses à partir de résidus d'ardoise et d'autres résidus industriels
ES2316241A1 (es) * 2006-06-01 2009-04-01 Universidade De Santiago De Compostela Procedimiento para la obtencion de fibras vitreas a partir de residuos de pizarra y otros residuos industriales.
EP2072475A1 (fr) * 2006-06-01 2009-06-24 Universidade De Santiago De Compostela Procédé d'obtention de fibres vitreuses à partir de résidus d'ardoise et d'autres résidus industriels
ES2316241B1 (es) * 2006-06-01 2009-12-30 Universidade De Santiago De Compostela Procedimiento para la obtencion de fibras vitreas a partir de residuos de pizarra y otros residuos industriales.
EP2072475A4 (fr) * 2006-06-01 2014-01-01 Univ Santiago Compostela Procédé d'obtention de fibres vitreuses à partir de résidus d'ardoise et d'autres résidus industriels
US7855170B2 (en) 2008-05-20 2010-12-21 Intevep, S.A. Homogenous synthetic mud-to-cement cementing glasses
US7964538B2 (en) 2008-05-20 2011-06-21 Intevep, S.A. Homogenous synthetic mud-to-cement cementing glasses

Also Published As

Publication number Publication date
JPS58502054A (ja) 1983-12-01
EP0095490A1 (fr) 1983-12-07

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