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A kind of composite material for high-strength special cable and preparation method thereof
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A technology for special cables and composite materials is applied in the field of composite materials for high-strength special cables and their preparation to achieve the effects of improving flame retardant effect, good high temperature resistance and increasing strength
Active Publication Date: 2017-11-17
武汉市钢电电线制造有限公司
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[0005] The present invention aims to solve but not limited to the following technical problems: ensure the high temperature resistance and fire resistance of composite materials for special cables, reduce the occurrence rate of organic and inorganic interface defects, improve the strength of special cables, and ensure the durability of special cables during use sex and reliability
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Embodiment 1-1
[0037] Polyether ether ketone, polyethylene, polyimide, hyperbranched polyurethane modified molybdenum trioxide and magnesium oxide, dicumyl peroxide, ethylene-vinyl acetate copolymer modified silicon nitride whiskers and oxide Zirconium whiskers are uniformly mixed in a high-speed mixer in proportion, melted and blended by a twin-screw extruder, the temperature of the melt blended extrusion is 210°C, the screw speed is 180 rpm, and pelletized by a pelletizer to obtain high-strength special Composite materials for cables.
[0038] Wherein the parts by weight of each raw material are:
[0039] Polyetheretherketone 50
[0040] Polyethylene 15
[0041] Polyimide 50
[0042] Molybdenum trioxide and magnesium oxide modified by hyperbranched polyurethane 10
[0063] The products prepared were designated as samples 1-3.
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Abstract
The invention provides a high-strength composite material used for special cables and a preparation method thereof. In the invention, high-performance engineering-use polyether ether ketone, polyethylene and polyimide are employed as basic polymer materials. Hyperbranched polyurethane is used for modifying molybdenum trioxide and magnesium oxide filling materials and an ethylene-vinyl acetate copolymer is used for modifying silicon nitride and zirconium oxide crystal whiskers, thereby improving binding force between inorganic filling materials and organic substrates. Meanwhile, the hyperbranched polymer penetrates the organic substrate network, thereby improving total strength. The composite material ensures high-temperature resistance, fire-proofing performance and the like and reduces defect generation rate between organic and inorganic interfaces. Compared with special cable materials with non-modified filling materials, the composite material improves strength by more than 33%, thereby effectively improving the durability and reliability of the special cables in use.
Description
technical field [0001] The invention belongs to the field of composite materials for special cables, and in particular relates to a composite material for high-strength special cables and a preparation method thereof. Background technique [0002] With the development of electric power technology, the application fields of cables continue to expand, and the application areas are also increasingly extensive. According to the different use environments, the requirements for the technical parameters of the cables are gradually biased, thus developing a wide variety of special cables with different technical parameters. Common special cables include: fireproof cables, heating cables, environmental protection cables and so on. In the prior art, according to the requirements of special cables, new structures, new materials, and new processes are often used to prepare special cables suitable for the requirements. [0003] In the prior art, the strength of the cable is often impro...
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