CN104318992A

CN104318992A - Flame-retardant cable

Info

Publication number: CN104318992A
Application number: CN201410577220.0A
Authority: CN
Inventors: 陈铁牛; 王芳; 梅章文
Original assignee: Anhui Telecom Equipment Trading Industry Co Ltd
Current assignee: Anhui Telecom Equipment Trading Industry Co Ltd
Priority date: 2014-10-24
Filing date: 2014-10-24
Publication date: 2015-01-28

Abstract

The invention discloses a flame-retardant cable. The flame-retardant cable comprises a cable core, the cable core comprises two V-shaped silica gel frameworks back on to each other, a wire core is arranged in each of a left cavity and a right cavity composed of the inner sides of the two V-shaped silica gel frameworks and the outer lateral surfaces of the two V-shaped silica gel frameworks, each wire core comprises a conductor, a fluorine plastic insulating layer covers the outer side of each conductor, a plurality of conductors are uniformly distributed at the periphery of a silica gel tube, tensile belts cover the outer sides of the conductors, and a silver-plated alloy wire knitted shield layer, an inner sheath, a waterproof canvas taped covering and an outer sheath coat the outer side of the cable core in sequence. According to the flame-retardant cable, the silver-plated alloy wire knitted shield layer, inner sheath, waterproof canvas taped covering and outer sheath coat the outer side of the cable core in sequence, so that the flame-retardant cable is resistant to tension, strong interference and cold, high in safety coefficient, good in fire resistance, corrosion resistance, softness and cold resistance, and strong in anti-interference ability.

Description

A kind of flame retardant cable

Technical field

The present invention relates to field of cable technology, particularly relate to a kind of flame retardant cable.

Background technology

Special occasions normally can transmit electric energy, accurate signal transmission is very important for being used in for the applicability of cable and fail safe, particularly severe cold frost region, harsh climate changes, often because cable cold tolerance does not reach instructions for use, to break open circuit, and cause signal transmission disorderly, make equipment produce misoperation, cause casualties and property badly damaged.

Traditional rubber cable protective cover material poor heat resistance, at high temperature easily heat ageing and thermal deformation, and flame retardant effect weak effect, meet fiery easy firing, can toxic and harmful be discharged when burning and the amount of being fuming is large, affecting environmental and human health impacts.

Summary of the invention

The object of the invention is exactly the defect in order to make up prior art, provides a kind of flame retardant cable.This cable jacket material has excellent heat-resistant deforming, heat-proof aging and fire resistance.

The present invention is achieved by the following technical solutions:

A kind of flame retardant cable, include cable core, described cable core includes the V-shaped silica gel framework of two opposing placements, core is placed with respectively in the left and right cavity that the lateral surface of the inner side of two V-shaped silica gel framework and two V-shaped silica gel framework is formed, described core includes conductor, fluoroplastic insulation layer is coated with outside conductor, multiple conductor be distributed on the surrounding of silicone tube and be coated with resistance bands in outside, being coated with silver-plated B alloy wire woven shield, inner sheath, Tarpauling lapping layer and oversheath successively in the outside of cable core.

Jacket material is made up of the raw material of following weight portion: acrylate rubber 40-60, perfluoroelastomers 20-40, poly(4-methyl-1-pentene) 10-15, flake asbestos 15-20, aromatic naphtha 12-18, peroxidized t-butyl perbenzoate 2.5-3.5, sericite-tridymite-cristobalite 10-15, precipitated silica 18-24, graphite powder 8-14, antioxidant 4010NA 2-3, N-phenylmaleimide 3-4, 2-hydroxy imidazole quinoline 1-2, zinc oxide 2-3, nano-aluminum hydroxide 10-15, Firebrake ZB 5-10, triethyl phosphate 7-13, modified mineral filler 16-22,

The preparation method of described modification complex mineral filler is as follows: (1) 4-8:3-5:2-3:1 takes barite in mass ratio, olivine, attapulgite, illite mix, pulverize, cross 50-100 mesh sieve, then at 820-880 DEG C of temperature lower calcination 20-30min, continue to be warming up to 1050-1150 DEG C, calcining 2-3h, shrend, dries; (2) get be equivalent to complex mineral filler weight 2-3 absolute ethyl alcohol doubly, 40-50% 4, the compounded mix that glyoxal ethyline and the step (2) of 4'-MDA epoxy resin, 2-4% process mixes, heating water bath is to 120-140 DEG C, 500-1000rpm high-speed stirred 0.5-1h, filter, dry; (3) get the methyl vinyl silicone rubber, the chlorosulfonated polyethylene rubber of 10-15%, the ethylene-methyl acrylate copolymer of 5-10%, the cumyl peroxide of 2-3%, the dipropylene glycol dibenzoate of accelerant N A-22,4-8% of 1-2%, the encapsulated red phosphorus of 3-6% that are equivalent to complex mineral filler weight 40-50% together to drop into double screw extruder after mixing with the complex mineral filler that step (2) processes and carry out melt blending, then extruding pelletization, naturally cool to room temperature, be modification complex mineral filler.

The preparation method of jacket material of the present invention, comprise the following steps: take in acrylate rubber, perfluoroelastomers, flake asbestos, 2-hydroxy imidazole quinoline, aromatic naphtha, triethyl phosphate, the mill of N-phenylmaleimide input, mixing 8-12min under roller temperature is 75-85 DEG C of temperature, then dancer rools temperature is to 50-60 DEG C, add the mixing 12-16min of all the other raw materials, park 6-12h, discharging.

Advantage of the present invention is: the present invention is coated with silver-plated B alloy wire woven shield, inner sheath, Tarpauling lapping layer and oversheath successively in the outside of cable core, there is tension, anti-strong jamming, the performance such as cold-resistant, coefficient of safety is high, fire-retardant, corrosion resistant, softness, cold tolerance are good; Antijamming capability is strong.Cable outer sheath material of the present invention has excellent heat-resistant deforming, heat aging property, can long-term work at 120-150 DEG C of temperature, and fire resistance is good, and oxygen index is high, and the amount of being fuming is low, halogen-free environmental, fire-retardantly reaches UL1581VW-1 requirement.

Accompanying drawing explanation

Fig. 1 is structural representation of the present invention.

Embodiment

As shown in Figure 1, a kind of flame retardant cable, include cable core, described cable core includes the V-shaped silica gel framework 1 of two opposing placements, core is placed with respectively in the left and right cavity that the lateral surface of the inner side of two V-shaped silica gel framework 1 and two V-shaped silica gel framework 1 is formed, described core includes conductor 2, fluoroplastic insulation layer 3 is coated with outside conductor 2, multiple conductor 2 is distributed on the surrounding of silicone tube 4 and is coated with resistance bands 5 in outside, silver-plated B alloy wire woven shield 6 is coated with successively in the outside of cable core, inner sheath 7, Tarpauling lapping layer 8 and oversheath 9.

Oversheath 9 material is made up of the raw material of following weight portion: acrylate rubber 50, perfluoroelastomers 35, poly(4-methyl-1-pentene) 15, flake asbestos 18, aromatic naphtha 16, peroxidized t-butyl perbenzoate 3, sericite-tridymite-cristobalite 12, precipitated silica 22, graphite powder 12, antioxidant 4010NA 2.5, N-phenylmaleimide 3,2-hydroxy imidazole quinoline 1.5, zinc oxide 2.5, nano-aluminum hydroxide 10, Firebrake ZB 10, triethyl phosphate 11, modified mineral filler 18;

The preparation method of described modification complex mineral filler is as follows: (1) 8:5:3:1 takes barite in mass ratio, olivine, attapulgite, illite mix, pulverize, cross 50-100 mesh sieve, then at 880 DEG C of temperature lower calcination 20min, continue to be warming up to 1150 DEG C, calcining 2h, shrend, dries; (2) get and be equivalent to the absolute ethyl alcohol of complex mineral filler weight 2 times, 40% 4,4'-MDA epoxy resin, 3% glyoxal ethyline mix with the compounded mix that step (2) processes, heating water bath to 120 DEG C, 1000rpm high-speed stirred 0.5h, filter, dry; (3) get the methyl vinyl silicone rubber, the chlorosulfonated polyethylene rubber of 10%, ethylene-methyl acrylate copolymer, the cumyl peroxide of 2.5%, accelerant N A-22, the dipropylene glycol dibenzoate of 6%, the encapsulated red phosphorus of 4% of 1.5% of 10% that are equivalent to complex mineral filler weight 45% together to drop into double screw extruder after mixing with the complex mineral filler that step (2) processes and carry out melt blending, then extruding pelletization, naturally cool to room temperature, be modification complex mineral filler.

The preparation method of oversheath 9 material, comprise the following steps: take in acrylate rubber, perfluoroelastomers, flake asbestos, 2-hydroxy imidazole quinoline, aromatic naphtha, triethyl phosphate, the mill of N-phenylmaleimide input, mixing 8-12min under roller temperature is 75-85 DEG C of temperature, then dancer rools temperature is to 50-60 DEG C, add the mixing 12-16min of all the other raw materials, park 6-12h, discharging.

After testing, the results of property of obtained oversheath 9 is as following table:

Claims

1. a flame retardant cable, it is characterized in that: include cable core, described cable core includes the V-shaped silica gel framework of two opposing placements, core is placed with respectively in the left and right cavity that the lateral surface of the inner side of two V-shaped silica gel framework and two V-shaped silica gel framework is formed, described core includes conductor, fluoroplastic insulation layer is coated with outside conductor, multiple conductor be distributed on the surrounding of silicone tube and be coated with resistance bands in outside, being coated with silver-plated B alloy wire woven shield, inner sheath, Tarpauling lapping layer and oversheath successively in the outside of cable core.

2. flame retardant cable according to claim 1, it is characterized in that: described jacket material is made up of the raw material of following weight portion: acrylate rubber 40-60, perfluoroelastomers 20-40, poly(4-methyl-1-pentene) 10-15, flake asbestos 15-20, aromatic naphtha 12-18, peroxidized t-butyl perbenzoate 2.5-3.5, sericite-tridymite-cristobalite 10-15, precipitated silica 18-24, graphite powder 8-14, antioxidant 4010NA 2-3, N-phenylmaleimide 3-4, 2-hydroxy imidazole quinoline 1-2, zinc oxide 2-3, nano-aluminum hydroxide 10-15, Firebrake ZB 5-10, triethyl phosphate 7-13, modified mineral filler 16-22,

3. flame retardant 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 acrylate rubber, perfluoroelastomers, flake asbestos, 2-hydroxy imidazole quinoline, aromatic naphtha, triethyl phosphate, the mill of N-phenylmaleimide input, mixing 8-12min under roller temperature is 75-85 DEG C of temperature, then dancer rools temperature is to 50-60 DEG C, add the mixing 12-16min of all the other raw materials, park 6-12h, discharging.