摘要:
Spunbond multicomponent filaments and nonwoven webs made from the filaments are disclosed. In accordance with the present invention, the multicomponent filaments contain a crimp enhancement additive. Specifically, the crimp enhancement additive is added to one of the polymeric components in order to accelerate its solidification rate. The additive enhances crimp, allows for highly crimped filaments to be made at smaller deniers, and produces low density webs with improved stretch and cloth-like properties. Specifically, the additive incorporated into the filaments is a nonionic surfactant such as an alkyl ether alkoxylate, a siloxane alkoxylate, an ester of a polyalkylene glycol, a polysaccharide derivative, a glycerol ester, or mixtures thereof.
摘要:
A cable comprising an electrical conductor or a core of electrical conductors surrounded by (A) an insulation layer, which is surrounded by, and contiguous with, (B) an insulation shield layer, the (A) insulation layer comprising: a) a polymer selected from the group consisting of polyethylene, ethylene/propylene copolymer rubber, ethylene/propylene/diene terpolymer rubber, and mixtures thereof, and, based on the weight of the insulation layer; b) 0.0005 to 1 percent by weight of a 4-substituted 2, 2, 6, 6-tetramethylepiperidine containing one or more of the group wherein R is hydrogen, or an alkoxy or an alkyl, each having 1 to 50 carbon atoms; and the (B) insulation shield layer comprising: a) a copolymer of ethylene and an unsaturated ester selected from the group consisting of vinyl esters, acrylic acid esters, and methacrylic acid esters wherein the vinyl ester is present in the copolymer in an amount of 10 to 28 percent by weight based on the weight of the copolymer and the acrylic acid esters and methacrylic acid esters are present in an amount of 10 to 50 percent by weight based on the weight of component (B)(a); b)a conductive carbon black; and, based on the weight of the insulation shield layer; c) at least 5 percent by weight of a copolymer of acrylonitrile and butadiene wherein the acrylonitrile is present in the copolymer in an amount of 25 to 55 percent by weight based on the weight of component (B) (c).
摘要:
The present invention relates to a method for reinforcing mineral-based materials using reinforced fiber material. More particularly, the present invention relates a method for more uniformly dispensing a fiber material with a mineral-based material, such as cement paste.
摘要:
A semiconducting composition for the inner semiconducting layer of an electric cable, an electric cable incorporating the composition, and a method of producing a cross-linked inner semiconducting layer of an electric cable are disclosed. The semiconducting composition comprises, based on the total weight of the composition, (a) 30-90 % by weight of an ethylene copolymer, (b) carbon black in an amount at least sufficient to make the composition semiconducting, (c) 0-8 % by weight of a peroxide cross-linking agent, (d) 0-8 % by weight of conventional additives, characterised in that said ethylene copolymer (a) is an ethylene-methyl (meth)acrylate copolymer, preferably comrising 5-25 % by weight of methyl(meth)acrylate, based on the weight of the copolymer.
摘要:
A lowly heat-expandable laminate which is obtained by superposing and curing fiber-reinforced layers impregnated with a resin composition comprising a radical-polymerizable resin, a radical-polymerizable monomer, and an inorganic filler and, compounded therewith, a specific amount of a thermoplastic resin. It is excellent in heat resistance, water resistance, and toughness and has an average coefficient of linear expansion of 20x10-6/°C or lower in the temperature range of 40 to 150°C.
摘要:
Reibscheibe enthaltend eine Reibschicht und eine Kernzone aus faserverstärkten keramischen Verbundwerkstoffen, wobei daß die Kernzone mindestens zwei Lagen aus multidirektionalem Fasergewebe als Verstärkung enthält, wobei mindestens 5 % der Fläche jeder Fasergewebelage von Matrixmaterial durchsetzt ist, derart daß das Matrixmaterial auch in einer Richtung senkrecht zur Ebene der Gewebelagen eine kontinuierliche Phase bildet
摘要:
A positive variable resistive yarn having a core, a sheath, and an insulator. The sheath includes distinct electrical conductors intermixed within a thermal expansive low conductive matrix. As the temperature of the yarn increases, the resistance of the sheath increases.
摘要:
Undrawn, tough, durably melt-bondable, macrodenier, thermoplastic, multicomponent filaments, such as sheath-core and side-by-side filaments, comprising a first plastic component and a second lower-melting component defining all or at least part of the material-air boundary of the filaments. The filaments can be made by melt-extruding thermoplastics to form hot filaments, cooling and solidifying the hot filaments, and recovering the solidified filaments without any substantial tension being placed thereon. Aggregations of the filaments can be made in the form of floor matting and abrasive articles.
摘要:
This invention is to provide yarns including fishing lines which contain ultra-high molecular weight polyethylene filaments with low elongation rate, adjustable specific gravity and excellent abrasion resistance, and to provide a method for manufacturing the same.