摘要:
A halogen free flame-retardant polymer composition includes flame retardancy and excellent oil resistance/fuel resistance, low-temperature characteristics, and injury resistance, and an insulated electric wire and a cable include the composition. The halogen-free flame-retardant polymer composition includes a base polymer including 60 to 70% by mass of LLDPE, 10% by mass or more of EVA having a melt flow rate (MFR) of 100 or more, and 10 to 20% by mass of maleic acid-modified polyolefin, a metal hydroxide added at a ratio of 150 to 220 parts by mass relative to 100 parts by mass of the base polymer, and carbon black. The addition ratio (metal hydroxide/carbon black) between the metal hydroxide and the carbon black is 15:1 to 100:1.
摘要:
A non-halogen multilayer insulated wire includes a conductor, an inner layer covering the conductor, and an outer layer formed on the external surface of the inner layer. The inner layer includes a polyolefin resin composition including 60 to 95 parts by mass of a high density polyethylene, 5 to 40 parts by mass of an ethylene copolymer, and 0.1 to 1 part by mass of a metal damage inhibitor. The outer layer includes a polyester resin composition that includes a base polymer mainly including a polyester resin, and further includes, relative to 100 parts by mass of the base polymer, 50 to 150 parts by mass of a polyester block copolymer, 0.5 to 5 parts by mass of a hydrolysis inhibitor, 0.5 to 5 parts by mass of an inorganic porous filler, and 10 to 30 parts by mass of magnesium hydroxide.
摘要:
A cable includes a conductor, an insulation coating layer on the conductor, and an outer coating layer on the insulation coating layer. The insulation coating layer is made of a composition containing 100 parts by mass of a base polymer (A) and 100 to 250 parts by mass of a non-halogen flame retardant. The polymer (A) contains 70% to 99% by mass of an ethylene-vinyl acetate copolymer (a1) containing an ethylene-vinyl acetate copolymer having a melting point of 70° C. or higher, and 1% to 30% by mass of an acid-modified polyolefin resin (a2) having a glass transition point of −55° C. or lower. The polymer (A) contains 25% to 50% by mass of a vinyl acetate component derived from the copolymer (a1). The outer coating layer is made of a composition containing 100 parts by mass of a base polymer (B) and 150 to 220 parts by mass of a non-halogen flame retardant. The polymer (B) contains 60% to 70% by mass of a linear low-density polyethylene (b1), 10% by mass or more of an ethylene-vinyl acetate copolymer (b2) having a melt flow rate of 100 g/10 min or more, and 10% to 20% by mass of a maleic acid-modified polyolefin (b3).
摘要:
A halogen-free resin composition includes an engineering plastic as a main component including an aromatic ring. A thermal weight-change rate measured by a thermogravimetry (under conditions that a dry air as a purge gas is introduced and that heating is conducted from 40° C. at a temperature rise rate of 10° C./min) is not less than −60% when it is 430° C.
摘要:
An insulated electric wire of the present disclosure includes a conductor and an insulation layer provided on an outer circumference of the conductor. The insulation layer includes a base polymer comprising ethylene-vinyl acetate copolymer and a metal hydroxide. The base polymer has a vinyl acetate content of 25% by mass or more and less than 50% by mass, and the metal hydroxide includes magnesium hydroxide.
摘要:
A non-halogen multilayer insulated wire includes a conductor, an inner layer covering the conductor, and an outer layer formed on the external surface of the inner layer. The inner layer includes a polyolefin resin composition including 60 to 95 parts by mass of a high density polyethylene, 5 to 40 parts by mass of an ethylene copolymer, and 0.1 to 1 part by mass of a metal damage inhibitor. The outer layer includes a polyester resin composition that includes a base polymer mainly including a polyester resin, and further includes, relative to 100 parts by mass of the base polymer, 50 to 150 parts by mass of a polyester block copolymer, 0.5 to 5 parts by mass of a hydrolysis inhibitor, 0.5 to 5 parts by mass of an inorganic porous filler, and 10 to 30 parts by mass of magnesium hydroxide.
摘要:
A non-halogen multilayer insulated wire includes a conductor, an inner layer covering the conductor, and an outer layer on the inner layer. The inner layer includes a polyolefin resin composition including a high density polyethylene and a copolymer in a mass ratio on the range of 50:50 to 90:10, and the copolymer includes one of an ethylene-ethyl acrylate copolymer including 9% to 35% by mass of ethyl acrylate and an ethylene-vinyl acetate copolymer including 15% to 45% by mass of vinyl acetate. The outer layer is made of a polyester resin composition that includes a base polymer mainly including a polyester resin and further includes, relative to 100 parts by mass of the base polymer, 50 to 150 parts by mass of a polyester block copolymer, 0.5 to 5 parts by mass of a hydrolysis inhibitor, and 0.5 to 5 parts by mass of an inorganic porous filler.