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
  • C03C25/00—Surface treatment of fibres or filaments made from glass, minerals or slags
  • C03C25/002—Thermal treatment
• • 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
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
  • Y10T442/30—Woven fabric [i.e., woven strand or strip material]
  • Y10T442/3976—Including strand which is stated to have specific attributes [e.g., heat or fire resistance, chemical or solvent resistance, high absorption for aqueous composition, water solubility, heat shrinkability, etc.]

Definitions

• This treatment may take place at any time after the formation of the fibres, but preferably after the fibres have been fabricated into yarn or cloth, and will produce beneficial results whether the fibres are in their original oil-free condition or have been lubricated.
• Heating may be accomplished either intermittently by operating on sepate quantities of finished material or continuously as by passing the fabric through a rially increased, both in in the wet state, by heat heating furnace of proper type and temperature possibly be accounted for either on the theory that the moisture tends to reduce the efficacy of the lubricants applied to glass fibres or that the moisture is drawn into the surface flaws known to exist in glass of all descriptions, thereby changing the force of attraction between the mirror surfaces of the flaw which, in the case of a very fine fibre, may make a major change in the strength ofthe fibre at that point.
• glass compositions referred to above are those in which the total alkali metal oxides do not exceed 3% of the glass composition.
• one definite effect of heat treatment of fibrous glass textiles is to reduce the strain set up in the fibres by their fabrication into textiles and produce a stronger fabric whose threads have less tendency to slide on one another andunravel.
• the increase in'strength of a heat treated, oiled yarn over the same yarn in its regular condition may be only about 2%, while under conditions of 100% relative humidity the heat-treated yarn may have a strength as much as two and onehalf times that of the regular yarn.
• the wet strength of a heat treated yarn may be from 65% to 75% of its dry strength, while the wet strength of a regular these weights-of yarn are heat treated.
• part of the above effect may be due to a tougheningand baking-on of the oil film which seals surface fiaws in the fibres and generally renders them water resistant, but this can be only part of the effect produced for a similar, though less pronounced effect is obtained by treating oil-free yarns and fibres.
• an oiled yarn of low alkali glass fibres has been observed to lose 30% of its strength as the relative humidity of the surrounding atmosphere increases from 47% to 70%.
• an oil free yarn which lost 20% of its strength before being heat treated lost only 11% of its strength after heat treatment.
• the oiled yarn lost only 1% of its strength with the same change in humidities.
• the heat treatment of the yarn was carried out at 200 C. for one half hour.
• the method of making glass textile material having a high wet strength which comprises forming filaments from a glass containing up to 3% of alkali metal oxides, fabricating said filaments into a textile material, and heating said material at a temperature between 50 C. and 340 C. for a period of from 5 to 30 minutes.
• the method of making glass textile material having a high wet strength which comprises forming filaments from a glass containing up to 3% of alkali metal oxides, fabricating said filaments into a textile material, and heating said material at a temperature between 50 C. and 340 C. for at least five minutes.
• the method of making glass textile material having a high wet strength which comprises forming filaments from a glass containing up to 3% of alkali metal oxides, coating said filaments with a lubricant, fabricating said filaments into a textile material, and heating said material at a temperature sufficiently high to remove a portign of said lubricant, but not in excess of 340 C.
• the method of making glasstextile material having a high wet strength which comprises forming filaments from a glass containing up to I yarn may be only 30% to 34% of its dry strength. Similar effects are found when'fabrics made from 3% of alkali metal oxides; coating said filaments with a lubricant, fabricating said filaments into a textile material, and heating said material at a temperature sufiiciently high to remove a portion of said lubricant, but not in excess of 340 C. for a period of at least five minutes.
• the method of making glass textile material having a high wet strength which comprises forming filaments from a glass containing up to 3% of alkali metal oxides, coating said filaments with a lubricant, fabricating said filaments into a textile material, and heating said material at a temperature of 200 C. for aperiod of thirty minutes.

Landscapes

• Chemical & Material Sciences (AREA)
• Life Sciences & Earth Sciences (AREA)
• Materials Engineering (AREA)
• Engineering & Computer Science (AREA)
• Chemical Kinetics & Catalysis (AREA)
• General Chemical & Material Sciences (AREA)
• Geochemistry & Mineralogy (AREA)
• Organic Chemistry (AREA)
• General Life Sciences & Earth Sciences (AREA)
• Thermal Sciences (AREA)
• Physics & Mathematics (AREA)
• Surface Treatment Of Glass Fibres Or Filaments (AREA)
• Woven Fabrics (AREA)

Priority Applications (3)

Applications Claiming Priority (1)

Publications (1)

Family

ID=22803958

Family Applications (1)

Country Status (3)

Cited By (9)

Families Citing this family (1)

• 1938
  • 1938-06-24 US US215688A patent/US2263217A/en not_active Expired - Lifetime
• 1939
  • 1939-06-24 FR FR856853D patent/FR856853A/fr not_active Expired
  • 1939-06-25 DE DEA89766D patent/DE734291C/de not_active Expired

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