CN104021851A

CN104021851A - Fire-proof cable

Info

Publication number: CN104021851A
Application number: CN201410195557.5A
Authority: CN
Inventors: 骆垠旭; 瞿庆广; 查德昌
Original assignee: Anhui Aics Technology Group Co Ltd
Current assignee: Anhui Aics Technology Group Co Ltd
Priority date: 2014-05-09
Filing date: 2014-05-09
Publication date: 2014-09-03

Abstract

The invention discloses a fire-proof cable. The fire-proof cable comprises a cable core. The cable core comprises an I-shaped silica gel framework, wire cores are placed on the left side of the I-shaped silica gel framework and the right side of the I-shaped silica gel framework respectively, elastic bars are placed between each wire core and the front end of the I-shaped silica gel framework and between the corresponding wire core and the rear end of the I-shaped silica gel framework, the wire cores comprise conductors, fluorinated ethylene-propylene insulating layers are arranged on the outer sides of the conductors in a wrapping mode, the outer sides of the conductors are further sleeve with quadrilateral-star-shaped silica gel frameworks, the outer sides of the quadrilateral-star-shaped silica gel frameworks are sequentially wrapped by galvanized steel wire rope winding layers, inflaming retarding taped layers and inner sheaths, and the outer side of the cable core is sequentially wrapped by a carbon fiber woven layer, a high-temperature-resistant glass silk filler filling layer, a calcined mica tape lapped covering and an outer sheath. The fire-proof cable is simple in structure, convenient to manufacture, heat resistant, good in bending property, good in fire-resistant effect, safe and convenient to use, economical and practical.

Description

A kind of fire-resisting cable

Technical field

The present invention relates to cable technology field, relate in particular to a kind of fire-resisting cable.

Background technology

The fireproof construction cable of prior art, effect of heat insulation is limited, bendability is poor, affects the ampacity of the normal operation of cable.Under water pouring, vibration environment, fire resistance is not so good, can not, for a long time 800 ℃ and above hot environment work, can not continue to use after particularly catching fire.The shortcomings such as existing cable protective cover material ageing resistance is poor.

Summary of the invention

The object of the invention is exactly in order to make up the defect of prior art, and a kind of fire-resisting cable is provided.Cable jacket material ageing resistance of the present invention is good.

The present invention is achieved by the following technical solutions:

A kind of fire-resisting cable, include cable core, described cable core includes I shape silica gel skeleton, left and right sides at described I shape silica gel skeleton is placed with respectively core, between the front and back end of each core and I shape silica gel skeleton, be respectively equipped with flexible rod, described core includes conductor, in the outside of conductor, be surrounded by perfluoroethylene-propylene insulating barrier, in conductor outside, also cover has four jiaos of star silica gel skeletons, outside at four jiaos of described star silica gel skeletons is coated with galvanized steel wire rope winding layer successively, fire-retardant belting layer and inner sheath, outside at described cable core is coated with carbon fiber wire braid successively, pyroceram silk filler packed layer, calcining Mica tape layer and oversheath.Described jacket material is made by the raw material of following weight portion: polyurethane rubber 40-50, butadiene-styrene rubber 20-30, ethylene-chlorotrifluoro-ethylene copolymer 20-30, cumyl peroxide 2-3, trihydroxy methyl propane trimethyl acrylate 1.5-2.5, nano boron carbide 5-10, nano-silicon nitride 8-14, antimony pentasulfide 2-3, aluminium hydroxide 10-15, Firebrake ZB 5-10, zinc stearate 1-2, atoleine 3-6, blanc fixe 12-18, mica powder 6-12, dibutyl phthalate 10-15, antioxidant D NP1-2, modified mineral filler 16-22,

The preparation method of described modification complex mineral filler is as follows: (1) in mass ratio 4-8:3-5:2-3:1 takes barite, olivine, attapulgite, illite and mixes, pulverize, cross 50-100 mesh sieve, then at 820-880 ℃ of temperature lower calcination 20-30min, continue to be warming up to 1050-1150 ℃, calcining 2-3h, shrend, dries; (2) get and be equivalent to 4 of absolute ethyl alcohol doubly of complex mineral filler weight 2-3,40-50%, the glyoxal ethyline of 4'-MDA epoxy resin, 2-4% mixes with the compounded mix that step (2) is processed, heating water bath is to 120-140 ℃, 500-1000rpm high-speed stirred 0.5-1h, filter, dry; (3) get and be equivalent to the ethylene propylene diene rubber of complex mineral filler weight 30-40% and carry out melt blending, the complex mineral filler that the pentaerythrite volution phosphoric acid phenol ester of the ethylene-methyl methacrylate methyl terpolymer of the Nomex of 15-25%, 5-10%, 5-10%, the vaseline of 3-5%, the Nanometer-sized Neodymium Oxide of 1-2% are processed with step (2) together drops into double screw extruder after mixing, then extruding pelletization, naturally cool to room temperature, be modification complex mineral filler.

The preparation method of described jacket material, comprise the following steps: take in polyurethane rubber, ethylene-chlorotrifluoro-ethylene copolymer, trihydroxy methyl propane trimethyl acrylate, antimony pentasulfide, atoleine, zinc stearate, the mill of dibutyl phthalate input, in roller temperature, be mixing 4-8min at 80-90 ℃ of temperature, then dancer rools temperature is to 55-65 ℃, add the mixing 8-14min of all the other raw materials, park 5-10h, discharging.

Advantage of the present invention is: the present invention is simple in structure, easy to make, and heat insulation, good bending property is fire-resistant effective, safe and convenient to use, economical and practical.Cable jacket material of the present invention has excellent radiation-resistant property and ageing resistance, also has advantages of that hot strength is high, physical and mechanical properties good, chemically stable is good, fire resistance is good and low smoke, zero halogen low toxicity, long service life.

Accompanying drawing explanation

Fig. 1 is structural representation of the present invention.

Embodiment

As shown in Figure 1, a kind of fire-resisting cable, include cable core, described cable core includes I shape silica gel skeleton 1, left and right sides at described I shape silica gel skeleton 1 is placed with respectively core, between the front and back end of each core and I shape silica gel skeleton 1, be respectively equipped with flexible rod 2, described core includes conductor 3, in the outside of conductor 3, be surrounded by perfluoroethylene-propylene insulating barrier 4, in conductor 3 outsides, also overlap and have four jiaos of star silica gel skeletons 5, outside at four jiaos of described star silica gel skeletons 5 is coated with galvanized steel wire rope winding layer 6 successively, fire-retardant belting layer 7 and inner sheath 8, in the outside of described cable core, be coated with successively carbon fiber wire braiding 9, pyroceram silk filler packed layer 10, calcining Mica tape layer 11 and oversheath 12.

Described oversheath 12 materials are made by the raw material of following weight portion: polyurethane rubber 45, butadiene-styrene rubber 25, ethylene-chlorotrifluoro-ethylene copolymer 30, cumyl peroxide 2.5, trihydroxy methyl propane trimethyl acrylate 2, nano boron carbide 8, nano-silicon nitride 12, antimony pentasulfide 2, aluminium hydroxide 15, Firebrake ZB 7, zinc stearate 1.5, atoleine 4, blanc fixe 16, mica powder 8, dibutyl phthalate 12, antioxidant D NP1.5, modified mineral filler 18;

The preparation method of described modification complex mineral filler is as follows: (1) in mass ratio 6:4:3:1 takes barite, olivine, attapulgite, illite and mixes, pulverize, cross 80 mesh sieves, then at 860 ℃ of temperature lower calcination 25min, continue to be warming up to 1050 ℃, calcining 3h, shrend, dries; (2) get be equivalent to 2 times of complex mineral filler weight absolute ethyl alcohol, 45% 4,4'-MDA epoxy resin, 3% glyoxal ethyline mix with the compounded mix that step (2) is processed, heating water bath to 125 ℃, 500rpm high-speed stirred 1h, filter, dry; (3) get be equivalent to ethylene propylene diene rubber, 20% Nomex, 8% ethylene-methyl methacrylate methyl terpolymer, 7% pentaerythrite volution phosphoric acid phenol ester, 4% the vaseline of complex mineral filler weight 40%, complex mineral filler that 1.5% Nanometer-sized Neodymium Oxide is processed with step (2) together drops into double screw extruder after mixing and carries out melt blending, then extruding pelletization, naturally cool to room temperature, be modification complex mineral filler.

The preparation method of described oversheath 12 materials, comprise the following steps: take in polyurethane rubber, ethylene-chlorotrifluoro-ethylene copolymer, trihydroxy methyl propane trimethyl acrylate, antimony pentasulfide, atoleine, zinc stearate, the mill of dibutyl phthalate input, in roller temperature, be mixing 4-8min at 80-90 ℃ of temperature, then dancer rools temperature is to 55-65 ℃, add the mixing 8-14min of all the other raw materials, park 5-10h, discharging.

The results of property of the oversheath 12 making after testing, is as following table:

Claims

1. a fire-resisting cable, it is characterized in that: include cable core, described cable core includes I shape silica gel skeleton, left and right sides at described I shape silica gel skeleton is placed with respectively core, between the front and back end of each core and I shape silica gel skeleton, be respectively equipped with flexible rod, described core includes conductor, in the outside of conductor, be surrounded by perfluoroethylene-propylene insulating barrier, in conductor outside, also cover has four jiaos of star silica gel skeletons, outside at four jiaos of described star silica gel skeletons is coated with galvanized steel wire rope winding layer successively, fire-retardant belting layer and inner sheath, outside at described cable core is coated with carbon fiber wire braid successively, pyroceram silk filler packed layer, calcining Mica tape layer and oversheath.

2. fire-resisting cable according to claim 1, it is characterized in that: described jacket material is made by the raw material of following weight portion: polyurethane rubber 40-50, butadiene-styrene rubber 20-30, ethylene-chlorotrifluoro-ethylene copolymer 20-30, cumyl peroxide 2-3, trihydroxy methyl propane trimethyl acrylate 1.5-2.5, nano boron carbide 5-10, nano-silicon nitride 8-14, antimony pentasulfide 2-3, aluminium hydroxide 10-15, Firebrake ZB 5-10, zinc stearate 1-2, atoleine 3-6, blanc fixe 12-18, mica powder 6-12, dibutyl phthalate 10-15, antioxidant D NP 1-2, modified mineral filler 16-22,

3. fire-resisting cable according to claim 1, it is characterized in that: the preparation method of described jacket material, it is characterized in that comprising the following steps: take in polyurethane rubber, ethylene-chlorotrifluoro-ethylene copolymer, trihydroxy methyl propane trimethyl acrylate, antimony pentasulfide, atoleine, zinc stearate, the mill of dibutyl phthalate input, in roller temperature, be mixing 4-8min at 80-90 ℃ of temperature, then dancer rools temperature is to 55-65 ℃, add the mixing 8-14min of all the other raw materials, park 5-10h, discharging.