Abstract:
An air bag having light weight and a flexibility, capable of being stored more compactly, highly durable with respect to a load during an operation thereof and long-term aging, and formed of a bag body of two pieces of woven fabric comprising polyamide synthetic fibers containing 30-200 ppm copper compound in terms of copper, or a three-dimensionally and properly formed cut cloth, characterized in that the woven fabrics have a product of a total fineness of weft yarn or warp yarn and fabric density of not more than 1600 decitex.number of yarns/2.54 cm, a load at an elongation percentage of 15 % of 3-35 N/%/2.54 cm, and an extension breakage work volume before the occurrence of breakage of 7000-30000 N.%/2.54 cm. This air bag can be used as any one of an air bag for driver's seat of an automobile, an air bag for an assistant driver's seat thereof and a side air bag thereof.
Abstract:
An improved method of making a carbon composite product wherein a fabric comprised of oxidized or otherwise stabilized polyacrylonitrile fibers is heat treated and then coated with a closely controlled amount of a carbonaceous binder such as a polyimide resin. The fabric is then further heat treated to thermally fuse the resin to the fabric to form a rigid, easily handleable material The carbonaceous binder is applied to the fabric in a manner whereby substantial encapsulation of the individual fibers is avoided. Next the material is cut into swatches of a predetermined size and shape and the segments are arranged into a basic or starting substrate having a volume greater than the desired volume of the end product. The basic substrate thus formed is then subjected to controlled temperatures and pressures to form a shaped substrate having a known fiber volume, a high degree of open porosity and a shape substantially corresponding to the shape desired of the end product. During this step, the fiber volume of the substrate is adjusted and the segments are fused together to temporarily hold them in position within the substrate. The shaped substrate thus formed is then pyrolyzed to form a carbon fibrous substrate which is densified in a freestanding configuration by the deposition of pyrolytic carbon interstitially thereof to form the desired end product. Because the portions of the fibers which are not encapsulated with binder are free to move, stresses generated in the substrate during pyrolyzation due to material shrinkage and the like are effectively distributed.
Abstract:
Die Erfindung betrifft aktive, hydroxyl- und haiogenhaltige polymere Phosphornitride, deren Halogenatome und Hydroxylgruppen an Phosphor gebunden sind, wobei die Phosphornitride etwa 35 bis 54 Gew.-% Phosphor, etwa 35 bis 47 Gew.-% Stickstoff, etwa 1 bis 20 Gew.-% Sauerstoff und etwa 0,1 bis 8 Gew.-% Chlor enthalten.
Abstract:
A method of forming a nonwoven fabric suitable for metal-finishing buffing operations includes providing a precursor web comprising polyester, staple length fibers, with hydroentanglement of the web effected to impart desired physical characteristics. Hydroentanglement is effected on a three-dimensional, image transfer device having an array of three-dimensional surface elements for patterning the fabric which is formed. Application of a binder composition lends desired durability to the fabric, with the binder composition preferably including a melamine polymeric composition to achieve the desired strength and abrasion resistance.
Abstract:
A method of forming a nonwoven fabric suitable for metal-finishing buffing operations includes providing a precursor web comprising polyester, staple length fibers, with hydroentanglement of the web effected to impart desired physical characteristics. Hydroentanglement is effected on a three-dimensional, image transfer device having an array of three-dimensional surface elements for patterning the fabric which is formed. Application of a binder composition lends desired durability to the fabric, with the binder composition preferably including a melamine polymeric composition to achieve the desired strength and abrasion resistance.
Abstract:
A laminate is disclosed, comprising substrates which are impregnated with a curable composition, laminated and cured, wherein the curable composition comprises (i) a curable prepolymer having a main chain consisting essentially of a random copolymer of a vinyl monomer and an acrylic or methacrylic monomer, and a side chain containing an acryloyl or methacryloyl group at the terminal, as a main component, and (ii) a crosslinkable vinyl monomer.
Abstract:
An article useful as an architectural fabric consisting of (a) a layer of fabric having a first surface and a second surface made of polytetrafluoroethylene fibers; and (b) a fluoropolymer coating disposed on at least the first surface of the fabric.
Abstract:
An air bag having light weight and a flexibility, capable of being stored more compactly, highly durable with respect to a load during an operation thereof and long-term aging, and formed of a bag body of two pieces of woven fabric comprising polyamide synthetic fibers containing 30-200 ppm copper compound in terms of copper, or a three-dimensionally and properly formed cut cloth, characterized in that the woven fabrics have a product of a total fineness of weft yarn or warp yarn and fabric density of not more than 1600 decitex.number of yarns/2.54 cm, a load at an elongation percentage of 15 % of 3-35 N/%/2.54 cm, and an extension breakage work volume before the occurrence of breakage of 7000-30000 N.%/2.54 cm. This air bag can be used as any one of an air bag for driver's seat of an automobile, an air bag for an assistant driver's seat thereof and a side air bag thereof.