Flame-retardant resin composition and coated electrical wire
A resin composition and flame retardant technology, applied in plastic/resin/wax insulators, circuits, insulated cables, etc., can solve the problems of insufficient flexibility or toughness, unsuitable for wire coating applications, etc., and achieve excellent surface smoothness , excellent extrusion processability, excellent processability and flexibility or toughness
Active Publication Date: 2013-02-13
POLYPLASTICS CO LTD
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- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, although this resin composition can impart flame retardancy, it has insufficient flexibility or toughness.
In particular, it is unsuitable for wire covering applications due to the lack of these characteristics
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment 1～13 and comparative example 1～8
[0126] The ingredients shown in Tables 1 and 2 were dry-blended according to the ratios shown in the table, using a twin-screw extruder with a screw of Φ30mm, melted and kneaded at 260°C, and then pelletized to obtain pellets. resin composition. The resin pellets were dried at 140° C. for 3 hours and used for molding processing.
[0127] Using the obtained pellet-like resin composition, an ASTM No. 4 type tensile test piece having a thickness of 1.0 mm was produced.
[0128] In addition, the obtained pellet-shaped resin composition was melt-kneaded at 260° C. using a PLASTOMILL single-screw extruder having a screw of 20 mm in diameter, and a copper wire of 0.9 mm in diameter was coated with a coating thickness of 0.2 mm to produce a coated electric wire.
[0129] The measuring method of characteristic evaluation is as follows.
[0130]
[0131] [Tensile Strength and Tensile Elongation at Break]
[0132] Tensile strength (MPa) and tensile elongation at break (%) were deter...
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Abstract
Disclosed is a flame-retardant resin composition exhibiting high heat resistance and flame retardancy, while having excellent workability and excellent flexibility or toughness. The flame-retardant resin composition is particularly useful for coating electrical wires and the like. Specifically, the flame-retardant resin composition contains, per 100 parts by weight of (A) a polybutylene terephthalate resin, 25-150 parts by weight of (B) a thermoplastic polyester elastomer, 5-40 parts by weight of (C) at least one phosphinic acid having an average particle diameter of not more than 10 µm which is selected from phosphinates, diphosphinates and polymerized products of phosphinates or diphosphinates, 0.5-20 parts by weight of (D) an epoxy compound and 0.1-5 parts by weight of (E) an antioxidant. The antioxidant (E) contains a phenolic antioxidant (e-1) as an essential ingredient, while additionally containing at least one antioxidant selected from a phosphite antioxidant (e-2), a phosphonite antioxidant (e-3) and a thioether antioxidant (e-4).
Description
technical field [0001] The present invention relates to a flame retardant that has high heat resistance and flame retardancy and is excellent in flexibility, durability (hydrolysis resistance, etc.), moldability (extrudability, etc.) A flame-retardant resin composition, especially a flame-retardant resin composition for covering electric wires and the like, and covered electric wires. Background technique [0002] In recent years, in the field of automobiles, many electrical components have been used for various purposes in order to improve fuel consumption, livability, safety, and the like. This application involves, for example, various electronic control devices or sensors for combustion or driving systems represented by ECU (Electronic Control Unit, EIectricaI Control Unit), indoor and outdoor lighting-related equipment, air-conditioning equipment, motor-driven equipment such as wipers and electric windows, etc. In many ways. As the number of electrical components incr...
Claims
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IPC IPC(8): C08L67/02C08K5/13C08K5/372C08K5/524C08K5/5313C08L63/00C08L79/00H01B3/28H01B3/42H01B7/42
CPCC08K5/5313H01B3/28C08K5/13C08L67/025H01B3/421C08L63/00H01B3/423C08L67/02C08L23/0884
Inventor 山田真也
Owner POLYPLASTICS CO LTD