Ultraviolet cross-linking oil-resistant low-smoke halogen-free flame retardant polyolefin cable material and preparation method thereof
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A technology of polyolefin cable materials and ultraviolet light, which is applied in the direction of plastic/resin/wax insulators, organic insulators, etc., can solve the problems of complex flame-retardant polyolefin cable materials, low oil resistance, and high cost of cross-linking equipment, and achieve production High efficiency, improved oil resistance, and low equipment investment
Inactive Publication Date: 2015-03-11
HONGLONGJIANG ORIENT SCI & TECH +1
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[0005] The present invention aims to solve the problems of complex process, high cost of cross-
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specific Embodiment approach 1
[0023] Specific Embodiment 1: In this embodiment, an ultraviolet cross-linked oil-resistant, low-smoke, halogen-free, flame-retardant polyolefin cable material consists of 100 parts by weight of base material, 120-130 parts of halogen-free flame retardant, and 1-3 parts of cationic Initiator, 1-3 parts of free radical initiator, 2-5 parts of multifunctional crosslinking agent, 5-10 parts of flame retardant synergist, 1-5 parts of smoke suppressant, 0.1-0.5 parts of composite antioxidant and 0.5 parts ~1.2 parts of lubricant;
[0024] The base material is ethylene propylene ethyl ester copolymer, ethylene-acrylate-carbonyl terpolymer, ethylene methyl acrylate copolymer, ethylene butyl acrylate copolymer, low-density polyethylene, linear low-density polyethylene, ethylene - α-octene polymer, EPDM rubber, styrene-based thermoplastic elastomer, glycidyl methacrylate grafted ethylene vinyl acetate copolymer, maleic anhydride grafted vinyl acetate copolymer, maleic anhydride Grafte...
specific Embodiment approach 2
[0032] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that the cationic initiator is didodecylbenzene hexafluoroarsenic acid iodonium salt, 4,4'-dimethyldiphenyliodonium One or a mixture of phosphate, triarylsulfonium hexafluorophosphate and ferrocene hexafluorophosphate, mixed in any ratio when it is a mixture. Others are the same as in the first embodiment.
specific Embodiment approach 3
[0033] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is that the flame retardant synergist is one or more of hydrotalcite, zinc borate, montmorillonite, wollastonite and silica-alumina powder The mixture of species is mixed in any ratio when it is a mixture. Others are the same as in the first or second embodiment.
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Abstract
The invention discloses an ultraviolet cross-linking oil-resistant low-smoke halogen-free flame retardant polyolefin cable material and a preparation method thereof, and relates to a flame retardant polyolefin cable material and a preparation method thereof, for solving the problems that a conventional flame retardant polyolefin cable material is complex in process, high in cost of cross-linking equipment and poor in oil resistance. The ultraviolet cross-linking oil-resistant low-smoke halogen-free flame retardant polyolefin cable material is prepared from a base material, a halogen-free flame retardant, a cation initiator, a free radical initiator, a multi-functional cross-linking agent, a flame retardant synergist, an antismoke agent, a composite antioxidant and a lubricant in parts by weight. The preparation method comprises the following steps: feeding the raw materials into an internal mixer according to the parts by weight, uniformly mixing, feeding the mixture into a double-screw extruder, further mixing and plastifying uniformly, and feeding into a single-screw extruder for extrusion pelleting, thereby obtaining the ultraviolet cross-linking oil-resistant low-smoke halogen-free flame retardant polyolefin cable material. The invention aims at preparing the ultraviolet cross-linking oil-resistant low-smoke halogen-free flame retardant polyolefin cable material.
Description
technical field [0001] The invention relates to a flame-retardant polyolefin cable material and a preparation method thereof. Background technique [0002] In recent years, with the country's emphasis on environmental protection and safety, low-smoke and halogen-free cables are not only required in some large buildings or public places, but also have higher requirements for wires and cables used in rolling stock. On the one hand, they must have excellent Flame-retardant and oil-resistant properties, the amount of smoke and corrosive gas emissions should be low when burning to prevent secondary disasters caused by smoke. On the other hand, it is required to have the characteristics of heat resistance, stress crack resistance, and long service life. Therefore, it has become a trend to develop cross-linked oil-resistant, low-smoke, halogen-free flame-retardant materials. [0003] U.S. Patent US6227908B1 discloses ethylene-vinyl acetate copolymer (EVA), magnesium hydroxide, com...
Claims
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