A thermoplastic composition made from or containing (i) a polyolefin portion made from or containing (a) an ethylene/alkyl acrylate, (b) a polyolefin elastomer selected from copolymers of ethylene with a C.sub.3-C.sub.15 alpha-olefin, and optionally with a diene, having a density of from 0.860 to g/cm.sup.3, (c) an ethylene polymer grafted with carboxyl groups or organic silane groups, and optionally (d) a copolymer of ethylene with a C.sub.4-C.sub.10 alpha-olefin, having a density of from 0.910 to g/cm.sup.3, and (ii) a mineral portion made from or containing (e) magnesium hydroxide, wherein the components (a)-(e) being present in amount such that the weight ratio (e)/polyolefin portion ranges from 0.8:1 to 1.75:1, the weight ratio (a)/(b) ranges from 0.75:1 to 1.25:1, and the weight ratio (a)/(e) ranges from 0.15:1 to 0.4:1; and wherein the thermoplastic composition has a melt flow rate of at least 2 g/10 min.

Crosslinkable polymeric compositions comprising an ethylene-based polymer, an organic peroxide, and a crosslinking coagent having at least one N,N-diallylamide functional group. Such crosslinkable polymeric compositions and their crosslinked forms can be employed as polymeric layers in wire and cable applications, such as insulation in power cables.

Provided are a core electric wire for multi-core cable that is superior in flex resistance at low temperature, and a multi-core cable employing the same. A core electric wire for multi-core cable according to an aspect of the present invention comprises a conductor obtained by twisting element wires, and an insulating layer that covers an outer periphery of the conductor, in which, in a transverse cross section of the conductor, a percentage of an area occupied by void regions among the element wires is from 5% to 20%. An average area of the conductor in the transverse cross section is preferably from 1.0 mm.sup.2 to 3.0 mm.sup.2. An average diameter of the element wires in the conductor is preferably from 40 m to 100 m, and the number of the element wires is preferably from 196 to 2,450. The conductor is preferably obtained by twisting stranded element wires obtained by twisting subsets of element wires. The insulating layer preferably comprises as a principal component a copolymer of ethylene and an -olefin having a carbonyl group.

An electrical device includes at least one cross-linked layer obtained from a polymer composition that has: at least one polymer comprising one or more epoxy function(s), and at least one cross-linking agent. The cross-linking agent is selected from: a non-aromatic cyclic amine, an imidazole of formula (I)

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where R.sub.1 and R.sub.2 independently represent a hydrogen atom or a hydrocarbon group, R.sub.3 and R.sub.4 independently represent a hydrogen atom or a hydrocarbon group, or R.sub.3 and R.sub.4 form, together with the carbon atoms of the imidazole ring to which they are attached, a ring, with the imidazole being associated with a cross-linking co-agent having at least one reactive function capable of reacting with the epoxy function of said polymer, and, a mixture thereof.

An insulated wire having an electrical wire structure capable of reducing a diameter while a direct-current stability property and a flame-retardant property are highly kept is provided. In the insulated wire including: a conductor; a flame-retardant semiconductive layer arranged on an outer periphery of the conductor; an insulating layer arranged on an outer periphery of the flame-retardant semiconductive layer; and a flame-retardant layer arranged on an outer periphery of the insulating layer, an oxygen index of the flame-retardant semiconductive layer defined by JIS K7201-2 is larger than 40, and a volume resistivity of the flame-retardant semiconductive layer defined by JIS C2151 is equal to or smaller than 5.010.sup.15 (cm).

A method of manufacturing a solid insulation member and an insulation member thereof are provided. The method of manufacturing the insulation member of the present invention includes manufacturing a 3D printing material using a mixed material in which one or more materials selected from among polycarbonate (PC), polybutylene terephthalate (PBT), acrylonitrile-butadiene-styrene (ABS), polyamide (PA), polyoxymethylene (POM), and polyethylene terephthalate (PET), one or more fillers selected from among TiO.sub.2, SiO.sub.2, and Al.sub.2O.sub.3, and a curing agent are mixed, and which contains different amounts of the fillers at predetermined intervals in a longitudinal direction, and sequentially stacking the manufactured 3D printing material using a 3D printer to thus manufacture a target insulation member so that the mixed material containing different amounts of the fillers at predetermined intervals in a longitudinal direction of the insulation member is sequentially stacked.

To provide a photosensitive resin composition capable of preventing ion migration while having satisfactory developability and having no cissing. The photosensitive resin composition comprises a reactive polymer having an ethylenically unsaturated double bond group and a carboxyl group; a free radical-based stabilizer; and a photoacid generator. The acid value of the reactive polymer is 40 to 100 mgKOH/g. The chlorine content of the reactive polymer is equal to or less than 150 ppm. The free radical-based stabilizer is selected from a hindered amine or hindered amine derivative. A cured product is obtained by using the photosensitive resin composition.

An insulated electric wire includes a linear conductor and one or a plurality of insulating layers formed on an outer peripheral surface of the conductor. At least one of the one or plurality of insulating layers contains a plurality of pores, outer shells are disposed on peripheries of the pores, and the outer shells are derived from shells of hollow-forming particles having a core-shell structure. A varnish for forming an insulating layer contains a resin composition forming a matrix and hollow-forming particles having a core-shell structure and dispersed in the resin composition. In the varnish, cores of the hollow-forming particles contain a thermally decomposable resin as a main component, and shells of the hollow-forming particles contain a main component having a higher thermal decomposition temperature than the thermally decomposable resin.

A processing technology of a busbar for a new energy automobile comprises the following steps: first step: punching a raw material blank of a busbar to obtain a busbar base material; second step: spraying high-temperature-resistant insulating paint on part or whole of an outer surface of the busbar base material obtained in the first step; and third step: drying to obtain a busbar. The busbar of the present invention has simple processing technology.

The invention relates to a composition comprising a) a thermoplastic matrix polymer based on one or more ethylenically unsaturated polymerizable monomer(s), wherein the thermoplastic polymer is selected from the group consisting of polyolefins, polystyrene, polyacrylates, ethylene-vinylacetate copolymer, and copolymers and blends of the aforementioned, b) an inorganic flame retardant, c) a polymer based on one or more ethylenically unsaturated polymerizable monomers and having a plurality of alkoxysilane and/or acetoxysilane groups covalently linked to the polymer, wherein the ethylenically unsaturated polymerizable monomers of component c) are different or have a different composition than the ethylenically unsaturated monomer(s) of component a) and d) a clay.