A kind of cable and preparation method thereof of the anti-unfirmly closing in fieldTechnical field
The invention discloses a kind of cables and preparation method thereof of the anti-unfirmly closing in field, specially technical field of cables.
Background technique
It for the existence for adapting to environment, is grown in the birds near forest zone and has all grown sharp beak mostly, they can peck bad electricityThe protective case and insulating layer of cable, communications optical cable.In cable and communications optical cable, for the ease of identification, usual insulating layer withAnd Loose tube have multiple color, after pipping protective case, insulated wire cores, optical fiber inside cable are damaged, influence electric power orThe normal operation of communication causes immeasurable loss.In the cable material of existing anti-unfirmly closing, mostly use high density orHigh molecular polyolefin protective case facts proved that, it is extremely difficult to play the role of being effective against birds invasion.For this purpose, we have proposed oneThe cable and preparation method thereof of the kind anti-unfirmly closing in field comes into operation, to solve the above problems.
Summary of the invention
The purpose of the present invention is to provide a kind of cables and preparation method thereof of the anti-unfirmly closing in field, to solve above-mentioned backgroundThe problem of being proposed in technology.
To achieve the above object, the invention provides the following technical scheme: cable and its preparation of a kind of field with anti-unfirmly closingMethod is formed by cavity between the core and bunch of cables including core and the bunch of cables being twisted by four groups of coresFilled with flexible filler, the bunch of cables outer wall is socketed with tension set, and the tension set outer wall is equipped with internal layer protective case, describedOuter layer protective sleeve is socketed in the outer circumferential walls of internal layer protective case, the outer layer protective sleeve outer wall is additionally provided with anti-unfirmly closing protective layer,The flexible steel in flat section tubing for being socketed in outer layer protective sleeve outer wall is equipped in the inner cavity of the anti-unfirmly closing protective layer, the flexible steel in flat section tubingOutside is connect by four groups of ribs with polyvinyl chloride insulation sheath, is also filled with bird repellent between two groups of adjacent ribs.
Preferably, the tension set includes polyvinyl chloride insulation coating layer, the outer wall of the polyvinyl chloride insulation coating layerIt is coated with one layer of insulating outer layer sheath, the outer circumferential walls of the insulating outer layer sheath are equipped with fish scale insulating trip.
Preferably, the internal layer protective case is integrally formed using low-smoke halide-free fireproof composite polyolefine material, and internal layer protective caseWith a thickness of 0.5-1.5mm.
Preferably, the outer layer protective sleeve be high-strength polyurethane fiber be integrally formed, and outer layer protective sleeve with a thickness of1-1.6mm。
Preferably, specific step is as follows for the preparation method:
S1: pvc material and nano aluminium oxide are added in high-speed mixer, with 500~600r/ at 90~120 DEG CThe speed high-speed stirred of min mixes 20~30min, and vulcanizer and mixed agent is then added, continues to be stirred；
S2: the raw material after mixture is sent into the double extruders of screw rod, bunch of cables is made after extrusion moulding；
S3: finished product core accesses in bunch of cables, and the filling flexible filler between core and bunch of cables；
S4: low-smoke halide-free fireproof composite polyolefine material is added in kneading machine after melting, subsequent extrusion moulding is made internal layer and protectsBunch of cables is then inserted in internal layer protective case by sheath；
S5: by polyurethane material by the way that outer layer protective sleeve is made in step S4 and is socketed on internal layer protective case；
S6: being connected in the outside of flexible steel in flat section tubing by four groups of ribs and the polyvinyl chloride insulation sheath of preforming, andBird repellent is filled inside polyvinyl chloride insulation sheath, and anti-unfirmly closing protective layer is integrally then socketed in by outer layer by flexible steel in flat section tubingThe cable of the anti-unfirmly closing in field is made on protective case.
Preferably, vulcanizer is the mixture of cumyl peroxide and trimerization isocyanide triallyl, wherein peroxidating twoIsopropylbenzene: trimerization isocyanide triallyl=0.5:0.6
Preferably, mixed agent is coupling agent, zinc oxide, anti-aging agent and paraffin oil mixture, wherein coupling agent: zinc oxide: anti-Old agent: paraffin oil=0.8:1.2:1.1:0.3.
Preferably, the temperature in kneading machine is 100~120 DEG C, 15~30min of continuous working period.
Compared with prior art, the beneficial effects of the present invention are: the present invention is stablized by reinforcing the fin raising construction of cableProperty, the tensile strength of cable can be increased using pvc material, insulating reliability is big, good flame retardation effect, to extendThe service life of cable, when unfirmly closing breaks polyvinyl chloride insulation sheath, built in bird repellent slowly enduringly release one kindThe special faint scent of bird nervous system, respiratory system is influenced, sparrow can fly away after hearing, will not be again within its memory phaseCome, ensure that the safety of cable, prevent cable bad, influence the normal operation of electric power or communication.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention；
Fig. 2 is the anti-unfirmly closing protective layer structure schematic diagram of the present invention；
Fig. 3 is tension nested structure schematic diagram of the present invention.
In figure: 1 bunch of cables, 2 cores, 3 flexible fillers, 4 tension sets, 41 polyvinyl chloride insulation coating layers, 42 insulation are outerLayer sheath, 43 fish scale insulating trips, 5 internal layer protective cases, 6 outer layer protective sleeves, 7 anti-unfirmly closing protective layers, 71 flexible steel in flat section tubing, 72 are reinforcedRib, 73 polyvinyl chloride insulation sheaths, 74 bird repellents.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, completeSite preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based onEmbodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every otherEmbodiment shall fall within the protection scope of the present invention.
Fig. 1-3 is please referred to, the present invention provides a kind of technical solution: a kind of cable of the anti-unfirmly closing in field, including 2 He of coreThe cable 1 being twisted by four groups of cores 2 is formed by the flexible filling of filling in cavity between the core 2 and bunch of cables 1Object 3,1 outer wall of bunch of cables are socketed with tension set 4, and the tension covers 4 outer walls and is equipped with internal layer protective case 5, the internal layer protectionIt is socketed with outer layer protective sleeve 6 in the outer circumferential walls of set 5,6 outer wall of outer layer protective sleeve is additionally provided with anti-unfirmly closing protective layer 7, describedThe flexible steel in flat section tubing 71 for being socketed in 6 outer wall of outer layer protective sleeve, the flexible steel in flat section tubing 71 are equipped in the inner cavity of anti-unfirmly closing protective layer 7Outside connect with polyvinyl chloride insulation sheath 73 by four groups of ribs 72, be also filled between two groups of adjacent ribs 72Bird repellent 74.
Wherein, tension set 4 includes polyvinyl chloride insulation coating layer 41, the polyvinyl chloride insulation coating layer 41 it is outerWall is coated with one layer of insulating outer layer sheath 42, and the outer circumferential walls of the insulating outer layer sheath 42 are equipped with fish scale insulating trip 43, instituteState internal layer protective case 5 using low-smoke halide-free fireproof composite polyolefine material be integrally formed, and internal layer protective case 5 with a thickness of 0.5-1.5mm, the outer layer protective sleeve 6 be high-strength polyurethane fiber be integrally formed, and outer layer protective sleeve 6 with a thickness of 1-1.6mm.
The present invention also provides a kind of field preparation methods of the cable of anti-unfirmly closing, and the specific steps of the preparation method are such asUnder:
S1: pvc material and nano aluminium oxide are added in high-speed mixer, with 500~600r/ at 90~120 DEG CThe speed high-speed stirred of min mixes 20~30min, and vulcanizer and mixed agent is then added, continues to be stirred, vulcanizer wasThe mixture of diisopropylbenzene (DIPB) and trimerization isocyanide triallyl is aoxidized, wherein cumyl peroxide: trimerization isocyanide triallyl=0.5:0.6, mixed agent are coupling agent, zinc oxide, anti-aging agent and paraffin oil mixture, wherein coupling agent: zinc oxide: anti-oldAgent: paraffin oil=0.8:1.2:1.1:0.3；
S2: the raw material after mixture is sent into the double extruders of screw rod, bunch of cables 1 is made after extrusion moulding；
S3: finished product core 2 accesses in bunch of cables 1, and the filling flexible filler 3 between core 2 and bunch of cables 1；
S4: low-smoke halide-free fireproof composite polyolefine material is added in kneading machine after melting, subsequent extrusion moulding is made internal layer and protectsBunch of cables 1 is then inserted in internal layer protective case 5 by sheath 5, and the temperature in kneading machine is 100~120 DEG C, continuous working period15~30min；
S5: by polyurethane material by the way that outer layer protective sleeve 6 is made in step S4 and is socketed on internal layer protective case 5；
S6: connected in the outside of flexible steel in flat section tubing 71 by four groups of ribs 72 and the polyvinyl chloride insulation sheath 73 of preformingIt connects, and fills bird repellent 74 inside polyvinyl chloride insulation sheath 73, then pass through flexible steel in flat section tubing 71 for anti-unfirmly closing protective layer 7Entirety is socketed in the cable that the anti-unfirmly closing in field is made on outer layer protective sleeve 6.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be withA variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understandingAnd modification, the scope of the present invention is defined by the appended.