摘要:
The present invention provides a clear resin molded body which has high heat resistance that can be used in the reflow soldering process using Pb-free solder, which has high transparency that can be used for an optical member, and which can be easily produced, and also provides a method of producing the same.A clear resin molded body includes a molded body of a resin composition composed of a carbon-hydrogen-bond-containing fluororesin, in which the resin composition is crosslinked by irradiating the molded body with ionizing radiation at least once in an atmosphere at a temperature lower than the melting point of the fluororesin and at least once in an atmosphere at a temperature equal to or higher than the melting point of the fluororesin. A method produces the clear resin molded body.
摘要:
A flame-retardant resin composition including a resin component containing (A) 30 to 90 parts by weight of a thermoplastic polyurethane elastomer having, as measured according to JIS K 7311, a JIS hardness of A98 or less, (B) 70 to 10 parts by weight of an ethylene-vinyl acetate copolymer having a vinyl acetate unit content of 50 to 90% by weight, (C) 0 to 40 parts by weight of at least one polymer selected from the following copolymers (C1) to (C3), (C1) an acid anhydride-modified ethylene-unsaturated carboxylic acid derivative copolymer, (C2) an epoxy group-having ethylene-olefin copolymer, and (C3) an acid anhydride-modified styrene elastomer, and provided that the total amount of components (A), (B) and (C) is 100 parts by weight, (D) a metal hydroxide in a ratio of 40 to 250 parts by weight with respect to the total amount of 100 parts by weight of the resin component containing (A), (B) and (C).
摘要:
Provided is an ionomer resin composition containing an ethylene ionomer resin and organo clay, wherein the content of the organo clay is 2 weight % or more and 60 weight % or less relative to the whole ionomer resin composition. Also provided is a tubular shaped article made by extruding the ionomer resin composition, which tubular shaped article has the following properties: rigidity sufficient for allowing an automatic machine to perform the processes of covering over a lithium-ion battery to be covered therewith and the contraction thereof; the contraction processing can be completed at low temperature of 120° C. or less; and superior resistance to an electrolytic solution.
摘要:
A flame-retardant resin composition including a resin component containing (A) 30 to 90 parts by weight of a thermoplastic polyurethane elastomer having, as measured according to JIS K 7311, a JIS hardness of A98 or less, (B) 70 to 10 parts by weight of an ethylene-vinyl acetate copolymer having a vinyl acetate unit content of 50 to 90% by weight, (C) 0 to 40 parts by weight of at least one polymer selected from the following copolymers (C1) to (C3), (C1) an acid anhydride-modified ethylene-unsaturated carboxylic acid derivative copolymer, (C2) an epoxy group-having ethylene-olefin copolymer, and (C3) an acid anhydride-modified styrene elastomer, and provided that the total amount of components (A), (B) and (C) is 100 parts by weight, (D) a metal hydroxide in a ratio of 40 to 250 parts by weight with respect to the total amount of 100 parts by weight of the resin component containing (A), (B) and (C).
摘要:
Provided are a non-halogen flame-retardant resin composition that contains a base polymer mainly containing a polyolefin-based resin, that passes a flame test, and that has good heat resistance and good heat-aging resistance which can satisfy a 150° C. rating, and an insulated electric wire and a tube using the non-halogen flame-retardant resin composition. The non-halogen flame-retardant resin composition contains (A) a base polymer containing 90% by mass or more of a mixture of a polyolefin-based resin and a styrene-based elastomer; (B) a metal phosphinate; and (C) a nitrogen-based flame retardant, and is used as an insulating coating layer. The insulating coating layer and the tube are preferably cross-linked by irradiation with ionizing radiation.
摘要:
A halogen free flame retardant cable that has excellent flexibility and abrasion resistance, exhibiting fusion adhesion property to mold materials, such as PBT and nylon, and excellent flame retardant property, preferably having abrasion resistance. In particular, there is provided a halogen free flame retardant cable characterized in that it includes an insulating wire, an inner sheath and an outer sheath, the inner sheath comprised of a polyolefin resin or a resin composition composed mainly of the resin, the outer sheath comprised of a product of crosslinking of a mixture of thermoplastic polyurethane elastomer and thermoplastic polyester elastomer or a resin composition composed mainly of the mixture, the outer sheath containing at least one flame retardant selected from among metal hydroxides and nitrogenous flame retardants in an amount of 3 to 35 parts by weight per 100 parts by weight of the resin mixture. Further, there is preferably provided a halogen free flame retardant cable wherein the inner sheath contains a specified flame retardant in an amount of specified range.
摘要:
Provided are a halogen-free electric wire including an insulation coating the life of which is less reduced in the case of the insulating coating being in contact with a PVC-resin-containing member; a wire bundle including the halogen-free electric wire and a PVC-resin-containing member, wherein a reduction in the life of a covering material of the halogen-free electric wire is lessened; and an automotive wiring harness comprising the wire bundle. The halogen-free electric wire includes a conductor and a covering material that covers the outer surface of the conductor, wherein the covering material includes a polyolefin resin and a flame retardant, and the flame retardant contains aluminum hydroxide as a main component, in particular, at a ratio of 80 weight percent or more. The wire bundle includes the halogen-free electric wires and a member containing a vinyl chloride resin. The automotive wiring harness comprises the wire bundle.
摘要:
The present invention improves the concentricity after expansion process of a heat shrinkable tube which is required to have a thin wall and hardness, and further aims to obtain elongation of 100% or more in a heat aging test, copperstability test, and heat shock test. The heat shrinkable tube satisfying such aim uses a medium- or high-density polyethylene that has a molecular weight distribution (Mw/Mn) of 30 to 55, an MFR of 0.05 to 0.2, and a specific gravity of 0.94 to 0.96. A medium- or high-density polyethylene obtained by combining an ethylene-vinyl acetate copolymer, ethylene-ethylacrylate copolymer, ethylene-methylacrylate copolymer, and ethylene-ethylmethacrylate copolymer may be used. More preferably, for an antioxidant, phenol-based and sulfur-based antioxidants are used together and zinc oxide is added.
摘要:
An independent steering suspension for a steering vehicle wheel, including: a carrier for supporting the steering vehicle wheel; a knuckle for supporting the carrier to be angularly movable relative thereto about a steering axis; upper and lower arms mounted laterally between upper and lower portions of the knuckle and opposing portions of the vehicle body, respectively, the upper and lower arms each having a general plan configuration selected from alphabetic letters A, L, T and Y to have a broad end corresponding to the bottom of A or L or the top of T or Y and a narrow end corresponding to the top of A or L or the bottom of T or Y and being pivotably connected with the knuckle upper or lower portion at the broad end and with the vehicle body at the narrow end; a steering device mounted between the carrier and the vehicle body to variably determine an angular position of the carrier about the steering axis; and a damper and spring mounted between the knuckle and the vehicle body.
摘要:
The invention provides a heat recoverable article, like a heat shrinkable tubing, which is used for the joint or terminal arrangement of electric cables, wherein an inner layer is formed on the inner surface of the heat recoverable article comprising a polymer material. A resin composite containing ethylene alkyl(meth) acrylate carbon monoxide copolymer is used for the inner surface, to produce a heat shrinkable tubing having an outstanding adhesive property to adherents, without suffering from foaming during the manufacturing process since this inner layer has little hygroscopic property.