Classifications

• • D—TEXTILES; PAPER
  • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
  • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
  • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
  • D02G3/44—Yarns or threads characterised by the purpose for which they are designed
  • D02G3/443—Heat-resistant, fireproof or flame-retardant yarns or threads
• • D—TEXTILES; PAPER
  • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
  • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
  • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
  • D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
  • D02G3/04—Blended or other yarns or threads containing components made from different materials
• • A—HUMAN NECESSITIES
  • A41—WEARING APPAREL
  • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
  • A41D31/00—Materials specially adapted for outerwear
  • A41D31/04—Materials specially adapted for outerwear characterised by special function or use
  • A41D31/08—Heat resistant; Fire retardant
• • D—TEXTILES; PAPER
  • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
  • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
  • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
  • D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
  • D02G3/12—Threads containing metallic filaments or strips
• • D—TEXTILES; PAPER
  • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
  • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
  • D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
  • D10B2331/02—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyamides
  • D10B2331/021—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyamides aromatic polyamides, e.g. aramides
• • 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
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
  • Y10T428/2913—Rod, strand, filament or fiber
  • Y10T428/2933—Coated or with bond, impregnation or core
  • Y10T428/2938—Coating on discrete and individual rods, strands or filaments
• • 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
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
  • Y10T428/2913—Rod, strand, filament or fiber
  • Y10T428/2933—Coated or with bond, impregnation or core
  • Y10T428/294—Coated or with bond, impregnation or core including metal or compound thereof [excluding glass, ceramic and asbestos]
  • Y10T428/2958—Metal or metal compound in coating
• • 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.]
  • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
  • Y10T442/654—Including a free metal or alloy constituent
  • Y10T442/655—Metal or metal-coated strand or fiber material

Definitions

• the invention relates to a fiber mixture containing
• Fibers from melamine / formaldehyde condensation products are known, e.g. from DE-B 23 64 091. They are characterized by incombustibility, flame resistance and high heat resistance. Because of these properties, they are used in the manufacture of refractory textiles. For some applications, however, the tensile strength of the fibers is not sufficient; in other areas of application, the low abrasion resistance proves to be disadvantageous.
• the invention was therefore based on the object, on the one hand, of improving the properties of melamine resin fibers and, on the other hand, of the properties of natural fibers.
• fiber mixtures were found which also contain other fibers and / or metal fibers or conductive polymer fibers, as well as a process for their production and the use of the fiber mixtures according to the invention for the production of fabrics, nonwovens, yarns, tapes and moldings and the uses Formation of melamine resin fibers for the production of the fiber mixtures according to the invention.
• solutions of other fiber-forming polymers can be added to the solution of the melamine resin in the spinning process for producing the melamine resin fibers.
• Aqueous solutions of polyvinyl alcohol are preferably added to the melamine resin solution, as a result of which the mechanical properties of the fibers obtained after the spinning process can be improved.
• mixtures or solutions of different polymers are spun and mixed fibers are thereby produced, while in the present invention different finished fibers are mixed and fiber mixtures are produced thereby.
• meltamine resin fibers are distinguished by their high temperature resistance and incombustibility. Their manufacture and their properties are known, e.g. from DE-A 23 64 091. They are preferably obtained from highly concentrated solutions of melamine / formaldehyde precondensation products after addition of an acidic hardener by centrifugal spinning, threading, extruding or by fibrillation processes. The fibers obtained in this way are generally predried, optionally stretched, and the melamine resin is usually cured at from 120 to 250.degree. The fibers are usually 5 to 25 ⁇ m thick and 2 to 2000 mm long.
• Particularly temperature-resistant fibers are obtained when up to 30 mol%, in particular 2 to 20 mol%, of the melamine in the melamine resin is replaced by a hydroxyalkyl melamine, as described in EP-A 221 330 or EP-A 523 485.
• Such fibers have a permanent temperature resistance up to 200 ° C, preferably up to 220 ° C.
• Subordinate amounts of melamine can also be replaced by substituted melamines, urea or phenol. Condensation products obtainable by condensation of a mixture containing as essential components are particularly preferred
• Formaldehyde or formaldehyde-providing compounds the molar ratio of melamines to formaldehyde being in the range from 1: 1.15 to 1: 4.5.
• Substituted melamines which are particularly suitable for the invention are the following compounds:
• melamines substituted with the 2-hydroxyethylamino group such as 2- (2-hydroxyethylamino) -4, 6-diamino-l, 3,5-triazine, 2,4-di- (2-hydroxyethylamino) -6-amino-l, 3, 5-triazine, 2, 4, 6-tris- (2-hydroxyethylamino) -1, 3, 5-triazine, melamines substituted with the 2-hydroxyisopropylamino group, such as 2- (2-hydroxyisopropylamino) - 4, 6-diamino-l, 3,5-triazine, 2,4-di- (2-hydroxyisopropylamino) -6-amino-1,3,5-triazine, 2,4,6-tris- (2nd -hydroxyiso ⁇ propylamino) -1, 3, 5-triazine, with the 5-hydroxy-3-oxapentylamino group substituted melamines such as 2- (5-hydroxy-3-o
• Preferred phenols are phenol, 4-methylphenol, 4-tert. -Butyl-phenol, 4-n-octyl-phenol, 4-n-nonyl-phenol, pyrocatechol, resorcinol, hydroquinone, 2,2-bis (4-hydroxyphenyl) propane, 4,4'-dihydroxydiphenyl sulfone, particularly preferred Phenol, resorcinol and 2,2-bis (4-hydroxyphenyl) propane.
• Formaldehyde is generally used as an aqueous solution with a concentration of, for example, 40 to 50% by weight or in the form of compounds which give formaldehyde on reaction with (A) and (B), for example as oligomeric or polymeric formaldehyde solid form such as paraformaldehyde, 1, 3, 5-trioxane or 1, 3, 5, 7-tetroxocane.
• Natural fibers naturally occurring cellulose-based fibers such as cotton, wool, linen or silk are used, and these natural fibers should also include those cellulose-based fibers which are of natural origin, but according to known and customary ones Processes have been modified or treated.
• cotton or wool in particular are natural fibers, with cotton belonging to the group of vegetable fibers.
• the terms for the raw material wool are defined in DIN 60004.
• wool is understood to mean all coarse and fine animal hair.
• melamine resin fibers may comprise the customary beautins such as fillers, dyes, pigments', metal powders and matting agents or already colored.
• the natural fibers can also be dyed before processing and provided with spinning aids.
• the two types of fibers are usually mixed in the usual way.
• Fiber mixing equipment as described in nonwovens, Georg Thieme Verlag.
• the wadded web obtained is then usually further processed into yarns or nonwovens, it being possible to use the processes customary in the textile industry.
• these yarns, nonwovens or woven fabrics can then be further processed into various types of textile or non-textile structures, such as for example Gloves and fire protection suits as well as fire and fire protection blankets.
• Such blended yarns or nonwovens or articles made from these blends are distinguished by excellent wearing comfort.
• the outstanding feature, however, is that the yarns, fabrics or nonwovens with melamine resin fiber contents of at least 50 to 60% by weight do not burn, and the natural fibers can be used without any equipment.
• Fibers include fibers made from non-flammable or flame-retardant materials such as m- and p-ararnides, glass, polyimides, polybenzimidazoles, carbon, preoxidized polyacrylonitrile and fibers made from thermoplastic materials such as high-strength polyethylene, polypropylene, polyesters, polyamides, Po ⁇ Use lyvinyl chloride or polyvinyl alcohols.
• non-flammable or flame-retardant materials such as m- and p-ararnides, glass, polyimides, polybenzimidazoles, carbon, preoxidized polyacrylonitrile
• thermoplastic materials such as high-strength polyethylene, polypropylene, polyesters, polyamides, Po ⁇ Use lyvinyl chloride or polyvinyl alcohols.
• the addition of the other fibers can be used to produce nonwovens and fabrics which have higher strengths than nonwovens and fabrics without the other fibers without adversely affecting the fire behavior.
• (c) optionally 2 to 25, preferably from 5 to 15 parts by weight, based on (a) and (b), of other fibers as described above, and (d) from 0.1 to 5, preferably from 0.5 to 2, parts by weight, based on the sum of (a) -> ⁇ (b) - ⁇ - (c), metal fibers or conductive polymer fibers .
• metal fibers for example, those based on stainless steel can be used.
• the conductive polymer fibers used can be those with a core made of polyamide, polyester and a conductive coating, and metal-coated melamine resin fibers as described in EP-A 528 192, preferably those with a polyester core.
• metal-coated melamine resin fibers are used, preferably aluminum-coated melamine resin fibers, which also includes mixtures of uncoated and metal-coated melamine resin fibers.
• aluminum for example, can be glued onto the melamine resin fibers in a manner known per se or an aluminum-vapor-coated foil, or aluminum can be vaporized on the melamine resin fibers in a high vacuum.
• the layer thickness of the metal layer, in particular the aluminum layer is usually selected in the range from 10 to 150 ⁇ m, preferably from 50 to 100 ⁇ m.
• Such yarns are preferably coated with aluminum in layer thicknesses in the range from 10 to 100 ⁇ m.
• Such yarns are based on, for example processes described in DE-AS 27 43 768, DE-A 38 10 597 or EP-A 528 182.
• Fabrics made from the mixtures according to the invention are very suitable for protective suits during welding and in the production of steel, in particular for protection against convective heat, radiant heat and liquid metal splashes.
• Fabrics or nonwovens according to the invention which are produced from the fiber mixtures containing thermoplastic fibers according to the invention, can be processed by conventional methods to give molded parts such as protective hoods for thermal insulation, the thermoplastic fibers generally acting as binding fibers.
• the fiber mixtures according to the invention can be used for the production of yarns and ribbons in a manner known per se. 25
• a needle felt with a basis weight of 400 g / m 2 was produced (by needling with a machine) from a mixture of 50 parts of melamine resin fibers (as in Example 1) and 50 parts of cotton not treated with flame retardants (as in Example 1) from Pilo).
• the fleece produced in this way was examined for its fire behavior as described in Example 1. Result: the fleece could be classified in fire class ⁇ b .
• a maximum tensile strength of the fleece of 520 N was determined in a strip tensile test based on DIN 53857.
• Example 3 was repeated with the mixture from Example 2.
• the maximum tensile force of the calendered fleece was 620 N.
• a yarn with a thickness of 50 tex was produced by the rotor spinning process from a mixture consisting of 60% by weight of Basofil® (as in Example 1) and 40% by weight of cotton not treated with flame retardants (as in Example 1) . Then a 2-ply thread was made on a conventional twisting machine. Gloves were produced from this thread on a conventional finger-knitted glove machine. The weight per glove was 54 g. The weight per unit area was 800 g / m 2 . According to the European standard EN 702, a threshold time of 14.6 see was measured at a contact temperature of 250 ° C. For comparison, a glove with the same weight made from para-aramid was tested. With the same contact temperature, a threshold value time of only 8.9 seconds was determined.

Landscapes

• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Mechanical Engineering (AREA)
• Nonwoven Fabrics (AREA)
• Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
• Artificial Filaments (AREA)
• Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
• Woven Fabrics (AREA)

Applications Claiming Priority (3)

Publications (2)

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Family Applications (1)

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• 1995
  • 1995-06-26 DE DE19523081A patent/DE19523081A1/de not_active Withdrawn
• 1996
  • 1996-06-20 EP EP96922864A patent/EP0820539B1/fr not_active Expired - Lifetime
  • 1996-06-20 AT AT96922864T patent/ATE184057T1/de not_active IP Right Cessation
  • 1996-06-20 KR KR1019970709705A patent/KR19990028389A/ko not_active Ceased
  • 1996-06-20 ES ES96922864T patent/ES2137010T3/es not_active Expired - Lifetime
  • 1996-06-20 US US08/981,544 patent/US5888652A/en not_active Expired - Fee Related
  • 1996-06-20 DE DE59602950T patent/DE59602950D1/de not_active Expired - Fee Related
  • 1996-06-20 CA CA002222206A patent/CA2222206A1/fr not_active Abandoned
  • 1996-06-20 WO PCT/EP1996/002678 patent/WO1997001661A1/fr not_active Ceased
  • 1996-06-20 CN CN96195097A patent/CN1068391C/zh not_active Expired - Fee Related
  • 1996-06-20 JP JP9504153A patent/JPH11508330A/ja not_active Ceased

Non-Patent Citations (1)

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