CN110229443A - A kind of flame retardant cable and preparation method thereof - Google Patents
A kind of flame retardant cable and preparation method thereof Download PDFInfo
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- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
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- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
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- H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame
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Abstract
The invention belongs to electrical equipment technical fields, more particularly to a kind of flame retardant cable and preparation method thereof, the preparation method of flame retardant cable of the present invention includes the following steps: conductive metal conductor process being then coated with adhesive in the periphery of high-temperature fibre, and high temperature resistant core is made after being heating and curing；Polyvinyl chloride, nickelous carbonate, expanded graphite, pentaerythrite, amido silicon oil, organo montmorillonite, magnesium hydroxide and ammonium polyphosphate are mixed and dried to obtain fire retardant insulating blend composition；Polyvinyl chloride, dioctyl terephthalate, solid calcium-zinc composite stabilizing agent, calcium carbonate, clay, tricresyl phosphate (2- chloropropyl) ester and nanmeter antimong trioxide are mixed, plasticizing after cure obtains fire retardant jacket blend composition；Fire retardant insulating blend composition is extruded in high temperature resistant core outer layers, obtains cable core；Fire retardant jacket blend composition is extruded in cable core outer layer, obtains flame retardant cable.Flame retardant cable fire retardant additive amount of the present invention is few, influences very little to cable mechanical property and electrical property.
Description
Technical field
The invention belongs to electrical equipment technical fields, and in particular to a kind of flame retardant cable and preparation method thereof.
Background technique
Polyvinyl chloride (PVC) resin is the second largest resin variety for being only second to polyethylene in the world at present.Polyvinyl chloride resin due to
Have the advantages that rigidity is good, intensity is high, corrosion-resistant, electric insulating quality is good and processing performance is good, cheap, in cable row
Industry has a wide range of applications.Polyvinyl chloride cable material is mainly used for all kinds of cables such as power cable, control cable, communication cable
Sheath material.PVC cable material is to add stabilizer, dioctyl phthalate, O-phthalic with polyvinyl chloride for basic resin
Sour diisodecyl ester, the inorganic fillers such as the plasticizer such as dioctyl terephthalate, trioctyl trimellitate (TOTM) and calcium carbonate, auxiliary agent
With the additives such as lubricant, the particle for squeezing out and preparing is mediated by mixture.
Polyvinyl chloride is poor to the stability of light, heat, and softening point is only 80 DEG C, begins to decompose at 130 DEG C.Cable is passing
Transmission of electricity often can cause cable fire by its own fever, short circuit or fire etc. in the process, damage to lives and properties.Mesh
Before, there are many high-flame-retardantPVC PVC sheath materials of domestic field of cables, but it is easy carbonization in extensive flame combustion, and material holds
It easily falls off from cable surface, huge destruction is generated to the actual use of cable, or even interrupt.And cable is burned
Also a large amount of poison gas, corrosive gas can be generated in journey can make one asphyxia, poisoning, not only make to survivor and rescue personnel
At great harm and pollution environment.The Chinese invention patent of Publication No. CN107619560A shows a kind of high temperature resistant resistance
PVC cable material is fired, the heat-resistant fireproof PVC cable material is grouped as by the group of following parts by weight: polyvinyl chloride 120~150
Part, it 5~10 parts of magnesium alloy, 50~100 parts of fire retardant, 20~50 parts and 5.2~10 parts of composite flame-proof synergist of dispersing agent, should
Fire retardant in patent is up to 50~100 parts, and the percentage for accounting for raw material is 25-31%, although improving the flame retardant property of cable,
But the addition of a large amount of fire retardants can cause the decline of cable mechanical property, volume resistivity and the performances such as low temperature resistant.Publication number
A kind of flame-retardant modified polyvinyl chloride resin compound CABLE MATERIALS of light heat-resisting and its system are shown for the Chinese invention patent of CN105482296A
Preparation Method, the CABLE MATERIALS are made of raw material from the following weight: polyvinyl chloride resin 55-65, ethylene-vinyl acetate copolymer 30-40,
Drag Ma beautiful jade 0.01-0.02, expansible graphite 10-15, polytetramethylene glycol ether 5-8, alumina silicate 15-22, eleostearic acid 3-4,
Hexamethyl phenodiazine silane 3-4, cotton pulp 22-30, zinc stearate 2-4, diethylene glycol dibenzoate 14-18, color masterbatch 8-10, auxiliary agent
2-3；The CABLE MATERIALS polyvinyl chloride resin is blended with ethylene-vinyl acetate copolymer as resin binder, and treated with modified
Cotton pulp is as filler, in conjunction with the auxiliary agent and other auxiliary materials with improvement processing performance, so that the CABLE MATERIALS is compared
Show more excellent heat-proof combustion-resistant performance when in use in traditional polyvinyl chloride resin.But its be added in resin binder compared with
More expansible graphites, since expansible graphite is electric conductor, it can be greatly reduced absolutely by being added in CABLE MATERIALS as filler
Edge performance leads to the generation of the danger such as electric leakage electric shock, has very big security risk.In conclusion being badly in need of at present a kind of fire-retardant
Agent additive amount is small, and the cable of good flame retardation effect.
Summary of the invention
In view of the deficiencies of the prior art, the purpose of the present invention is to provide a kind of flame retardant cables, need to only add less resistance
Combustion agent can play good flame retardant effect, influence very little to the mechanical property of cable and electrical property.The present invention also provides this
The preparation method of kind flame retardant cable.
To achieve the above object, the present invention adopts the following technical scheme:
The present invention provides a kind of preparation methods of flame retardant cable, comprise the steps of:
S1, by conductive metal conductor process in the periphery of high-temperature fibre, be then coated with adhesive for polyurethane, make every two Shu Naigao
It fits closely between warm fiber, is then heating and curing, high temperature resistant core is made；
S2, by the polyvinyl chloride of 100 parts by weight, the nickelous carbonate of 2-3 parts by weight, the expanded graphite of 3-5 parts by weight, 2-4 parts by weight
Pentaerythrite, the amido silicon oil of 3-4 parts by weight, the organo montmorillonite of 3-5 parts by weight, 6-8 parts by weight magnesium hydroxide and 5-6
The ammonium polyphosphate of parts by weight is uniformly mixed, and dries 3-4h under conditions of 80-85 DEG C, is obtained dry fire retardant insulating and is blended
Material；
S3, by the polyvinyl chloride of 100 parts by weight, the solid calcium of the dioctyl terephthalate of 30 parts by weight, 3.8-4.5 parts by weight
Zinc composite stabilizer, the calcium carbonate of 30-33 parts by weight, the clay of 8-10 parts by weight, 8-13 parts by weight tricresyl phosphate (2- chlorine third
Base) nanmeter antimong trioxides of ester and 0.5-1 parts by weight is uniformly mixed under conditions of 95-120 DEG C, wait mixed materials temperature from
After being so cooled to 20-25 DEG C, mixed material is placed on open type plastic purificating set and is plasticized, discharged after being kneaded 3-5min, then flat
5min is preheated on plate vulcanizer under the conditions of 160 DEG C and 5MPa, then pressure is risen into 14MPa, keeps pressure constant, hot pressing
It discharges after 5min, obtains dry fire retardant jacket blend composition；
S4, dry fire retardant insulating blend composition is extruded in by high temperature resistant core outer layers using plastic extruder, obtains having fire-retardant
The cable core of polyethylene layer；
S5, dry fire retardant jacket blend composition is extruded in using plastic extruder by single cable core or more twisted cables
Core outer layer, is prepared flame retardant cable.
Conductive metal conductor described in step S1 of the present invention is copper wire, tinned copper wire or silver-gilt copper wire.
The main component of high-temperature fibre described in step S1 of the present invention is aluminium oxide, silica and alkali metal oxide.
The diameter of high temperature resistant core described in step S1 of the present invention is 60-80nm.
The partial size of nickelous carbonate described in step S2 of the present invention is 15-20 μm, and the partial size of the organo montmorillonite is 50nm, described
The partial size of ammonium polyphosphate is 40-50 μm, and the partial size of calcium carbonate described in step S3 is 15-20 μm.
Roll temperature is 158-162 DEG C before open type plastic purificating set described in step S3 of the present invention, and rear roll temperature is 153-157 DEG C.
Extrusion temperature when extruding dry fire retardant insulating blend composition described in step S4 of the present invention is controlled in 158-163
DEG C, extrusion pressure is controlled in 155-163MPa.
Extrusion temperature when extruding dry fire retardant jacket blend composition described in step S5 of the present invention is controlled in 158-162
DEG C, extrusion pressure is controlled in 180-186MPa.
Solid calcium-zinc composite stabilizing agent described in step S3 of the present invention is zinc borate, calcium phosphate and high melting point paraffin according to weight
Than the mixture of 2:2:1 composition.
The present invention also provides a kind of flame retardant cables, are prepared by above-mentioned preparation method.
The beneficial effects of the present invention are: tricresyl phosphate (2- chloropropyl) ester/nanometer is added in flame retardant cable of the present invention
Antimony oxide composite flame-retardant agent, nanmeter antimong trioxide granularity is small and can be uniformly dispersed in pvc material, make its
Lead chloride can be efficiently generated during fire-retardant, passes through the fire-retardant fire retardation with reduction chain reaction free radical of condensed phase, phosphorus
The condensed phase flame retardant effect that sour three (2- chloropropyl) esters and nanmeter antimong trioxide have jointly, doubles the shape for slowing down free radical
At, while surface forms more fire retardant, heat-insulated, oxygen-impermeable protective layers, forms excellent synergistic effect, substantially increases
The flame retardant property of cable.Flame retardant cable of the present invention is not necessarily to a large amount of tricresyl phosphate (2- chlorine due to being added to nanmeter antimong trioxide
Propyl) ester can have very strong flame retardant property, avoid tricresyl phosphate (2- chloropropyl) ester additive amount it is excessive when due to it
Polar group largely attracts the case where cable mechanical properties decrease caused by plasticizer.In conclusion flame retardant cable of the present invention is same
When have very strong anti-flammability, mechanical property and electrical property.
Specific embodiment
Present invention will be further explained below with reference to specific examples.These embodiments are merely to illustrate the present invention and do not have to
In limiting the scope of the invention.
Embodiment 1
The preparation method for present embodiments providing a kind of flame retardant cable, comprises the steps of:
S1, by copper wire process in the periphery of high-temperature fibre, the main component of high-temperature fibre is aluminium oxide, silica and alkali
Metal oxide is then coated with adhesive for polyurethane, makes to fit closely between every two beams high-temperature fibre, then be heating and curing,
The high temperature resistant core that diameter is 60nm is made；
S2, by the polyvinyl chloride of 100 parts by weight, the nickelous carbonate of 2 parts by weight, the expanded graphite of 3 parts by weight, 2 parts by weight season penta
Tetrol, the amido silicon oil of 3 parts by weight, the organo montmorillonite of 3 parts by weight, the magnesium hydroxide of 6 parts by weight and 5 parts by weight polyphosphoric acid
Ammonium is uniformly mixed, and dries 3h under conditions of 80 DEG C, obtains dry fire retardant insulating blend composition；
S3, the solid calcium zinc of the polyvinyl chloride of 100 parts by weight, the dioctyl terephthalate of 30 parts by weight, 3.8 parts by weight is answered
Close stabilizer, the calcium carbonate of 30 parts by weight, the clay of 8 parts by weight, tricresyl phosphate (2- chloropropyl) ester of 8 parts by weight and 0.5 weight
The nanmeter antimong trioxide of part is uniformly mixed under conditions of 95 DEG C, after waiting mixed materials temperature to naturally cool to 20 DEG C, will be mixed
Conjunction material, which is placed on open type plastic purificating set, to be plasticized, and is discharged after being kneaded 3min, then in 160 DEG C and 5MPa item on vulcanizing press
5min is preheated under part, pressure is then risen into 14MPa, keeps pressure constant, discharges after hot pressing 5min, obtains the fire-retardant of drying
Sheath blend composition；
S4, dry fire retardant insulating blend composition is extruded in by high temperature resistant core outer layers using plastic extruder, obtains having fire-retardant
The cable core of polyethylene layer；
S5, dry fire retardant jacket blend composition is extruded in by 5 twisted cable core outer layers using plastic extruder, be prepared
Flame retardant cable.
The partial size of nickelous carbonate described in the present embodiment step S2 is 15 μm, and the partial size of the organo montmorillonite is 50nm, described
The partial size of ammonium polyphosphate is 40 μm, and the partial size of calcium carbonate described in step S3 is 15 μm.
Roll temperature is 158 DEG C before open type plastic purificating set described in the present embodiment step S3, and rear roll temperature is 153 DEG C.
Extrusion temperature when extruding dry fire retardant insulating blend composition described in the present embodiment step S4 is controlled at 158 DEG C,
Extrusion pressure is controlled in 155MPa.
Extrusion temperature when extruding dry fire retardant jacket blend composition described in the present embodiment step S5 is controlled at 158 DEG C,
Extrusion pressure is controlled in 180MPa.
Solid calcium-zinc composite stabilizing agent described in the present embodiment step S3 is zinc borate, calcium phosphate and high melting point paraffin according to weight
Measure the mixture formed than 2:2:1.
Embodiment 2
The preparation method for present embodiments providing a kind of flame retardant cable, comprises the steps of:
S1, by tinned copper wire process in the periphery of high-temperature fibre, the main component of high-temperature fibre is aluminium oxide, silica
And alkali metal oxide, it is then coated with adhesive for polyurethane, makes to fit closely between every two beams high-temperature fibre, then heating is solid
Change, the high temperature resistant core that diameter is 70nm is made；
S2, by the polyvinyl chloride of 100 parts by weight, the nickelous carbonate of 2.5 parts by weight, the expanded graphite of 4 parts by weight, 3 parts by weight season
Penta tetrol, the amido silicon oil of 3.5 parts by weight, the organo montmorillonite of 4 parts by weight, the magnesium hydroxide of 7 parts by weight and 5.5 parts by weight
Ammonium polyphosphate is uniformly mixed, and dries 3.5h under conditions of 82 DEG C, obtains dry fire retardant insulating blend composition；
S3, the solid calcium zinc of the polyvinyl chloride of 100 parts by weight, the dioctyl terephthalate of 30 parts by weight, 4.1 parts by weight is answered
Close stabilizer, the calcium carbonate of 31 parts by weight, the clay of 9 parts by weight, 10 parts by weight tricresyl phosphate (2- chloropropyl) ester and 0.8 weight
The nanmeter antimong trioxide for measuring part is uniformly mixed under conditions of 108 DEG C, will after waiting mixed materials temperature to naturally cool to 22 DEG C
Mixed material is placed on open type plastic purificating set and is plasticized, and discharges after being kneaded 4min, then in 160 DEG C and 5MPa on vulcanizing press
Under the conditions of preheat 5min, pressure is then risen into 14MPa, keeps pressure constant, hot pressing 5min discharging obtains dry fire-retardant
Sheath blend composition；
S4, dry fire retardant insulating blend composition is extruded in by high temperature resistant core outer layers using plastic extruder, obtains having fire-retardant
The cable core of polyethylene layer；
S5, dry fire retardant jacket blend composition is extruded in by 5 twisted cable core outer layers using plastic extruder, be prepared
Flame retardant cable.
The partial size of nickelous carbonate described in the present embodiment step S2 is 18 μm, and the partial size of the organo montmorillonite is 50nm, described
The partial size of ammonium polyphosphate is 45 μm, and the partial size of calcium carbonate described in step S3 is 18 μm.
Roll temperature is 160 DEG C before open type plastic purificating set described in the present embodiment step S3, and rear roll temperature is 155 DEG C.
Extrusion temperature when extruding dry fire retardant insulating blend composition described in the present embodiment step S4 is controlled at 160 DEG C,
Extrusion pressure is controlled in 159MPa.
Extrusion temperature when extruding dry fire retardant jacket blend composition described in the present embodiment step S5 is controlled at 160 DEG C,
Extrusion pressure is controlled in 183MPa.
Solid calcium-zinc composite stabilizing agent described in the present embodiment step S3 is zinc borate, calcium phosphate and high melting point paraffin according to weight
Measure the mixture formed than 2:2:1.
Embodiment 3
The preparation method for present embodiments providing a kind of flame retardant cable, comprises the steps of:
S1, by silver-gilt copper wire process in the periphery of high-temperature fibre, the main component of high-temperature fibre is aluminium oxide, silica
And alkali metal oxide, it is then coated with adhesive for polyurethane, makes to fit closely between every two beams high-temperature fibre, then heating is solid
Change, the high temperature resistant core that diameter is 80nm is made；
S2, by the polyvinyl chloride of 100 parts by weight, the nickelous carbonate of 3 parts by weight, the expanded graphite of 5 parts by weight, 4 parts by weight season penta
Tetrol, the amido silicon oil of 4 parts by weight, the organo montmorillonite of 5 parts by weight, the magnesium hydroxide of 8 parts by weight and 6 parts by weight polyphosphoric acid
Ammonium is uniformly mixed, and dries 4h under conditions of 85 DEG C, obtains dry fire retardant insulating blend composition；
S3, the solid calcium zinc of the polyvinyl chloride of 100 parts by weight, the dioctyl terephthalate of 30 parts by weight, 4.5 parts by weight is answered
Close stabilizer, the calcium carbonate of 33 parts by weight, the clay of 10 parts by weight, tricresyl phosphate (2- chloropropyl) ester of 13 parts by weight and 1 weight
The nanmeter antimong trioxide of part is uniformly mixed under conditions of 120 DEG C, after waiting mixed materials temperature to naturally cool to 25 DEG C, will be mixed
Conjunction material, which is placed on open type plastic purificating set, to be plasticized, and is discharged after being kneaded 5min, then in 160 DEG C and 5MPa item on vulcanizing press
5min is preheated under part, pressure is then risen into 14MPa, keeps pressure constant, discharges after hot pressing 5min, obtains the fire-retardant of drying
Sheath blend composition；
S4, dry fire retardant insulating blend composition is extruded in by high temperature resistant core outer layers using plastic extruder, obtains having fire-retardant
The cable core of polyethylene layer；
S5, dry fire retardant jacket blend composition is extruded in by 5 twisted cable core outer layers using plastic extruder, be prepared
Flame retardant cable.
The partial size of nickelous carbonate described in the present embodiment step S2 is 20 μm, and the partial size of the organo montmorillonite is 50nm, described
The partial size of ammonium polyphosphate is 50 μm, and the partial size of calcium carbonate described in step S3 is 20 μm.
Roll temperature is 162 DEG C before open type plastic purificating set described in the present embodiment step S3, and rear roll temperature is 157 DEG C.
Extrusion temperature when extruding dry fire retardant insulating blend composition described in the present embodiment step S4 is controlled at 163 DEG C,
Extrusion pressure is controlled in 163MPa.
Extrusion temperature when extruding dry fire retardant jacket blend composition described in the present embodiment step S5 is controlled at 162 DEG C,
Extrusion pressure is controlled in 186MPa.
Solid calcium-zinc composite stabilizing agent described in the present embodiment step S3 is zinc borate, calcium phosphate and high melting point paraffin according to weight
Measure the mixture formed than 2:2:1.
Comparative example 1
This comparative example provides a kind of preparation method of flame retardant cable, comprises the steps of:
S1, by silver-gilt copper wire process in the periphery of high-temperature fibre, the main component of high-temperature fibre is aluminium oxide, silica
And alkali metal oxide, it is then coated with adhesive for polyurethane, makes to fit closely between every two beams high-temperature fibre, then heating is solid
Change, the high temperature resistant core that diameter is 80nm is made；
S2, by the polyvinyl chloride of 100 parts by weight, the nickelous carbonate of 3 parts by weight, the expanded graphite of 5 parts by weight, 4 parts by weight season penta
Tetrol, the amido silicon oil of 4 parts by weight, the organo montmorillonite of 5 parts by weight, the magnesium hydroxide of 8 parts by weight and 6 parts by weight polyphosphoric acid
Ammonium is uniformly mixed, and dries 4h under conditions of 85 DEG C, obtains dry fire retardant insulating blend composition；
S3, by the polyvinyl chloride of 100 parts by weight, the solid calcium of the dioctyl terephthalate of 30 parts by weight, 3.8-4.5 parts by weight
Zinc composite stabilizer, the calcium carbonate of 33 parts by weight, the clay of 10 parts by weight and 13 parts by weight tricresyl phosphate (2- chloropropyl) ester exist
It is uniformly mixed under conditions of 120 DEG C, after waiting mixed materials temperature to naturally cool to 25 DEG C, mixed material is placed in open refining and is moulded
It is plasticized on machine, discharges after being kneaded 5min, 5min is then preheated under the conditions of on vulcanizing press in 160 DEG C and 5MPa, then will pressure
Power rises to 14MPa, keeps pressure constant, discharges after hot pressing 5min, obtain dry fire retardant jacket blend composition；
S4, dry fire retardant insulating blend composition is extruded in by high temperature resistant core outer layers using plastic extruder, obtains having fire-retardant
The cable core of polyethylene layer；
S5, dry fire retardant jacket blend composition is extruded in by 5 twisted cable core outer layers using plastic extruder, be prepared
Flame retardant cable.
The partial size of nickelous carbonate described in this comparative example step S2 is 20 μm, and the partial size of the organo montmorillonite is 50nm, described
The partial size of ammonium polyphosphate is 50 μm, and the partial size of calcium carbonate described in step S3 is 20 μm.
Roll temperature is 162 DEG C before open type plastic purificating set described in this comparative example step S3, and rear roll temperature is 157 DEG C.
Extrusion temperature when extruding dry fire retardant insulating blend composition described in this comparative example step S4 is controlled at 163 DEG C,
Extrusion pressure is controlled in 163MPa.
Extrusion temperature when extruding dry fire retardant jacket blend composition described in this comparative example step S5 is controlled at 162 DEG C,
Extrusion pressure is controlled in 186MPa.
Solid calcium-zinc composite stabilizing agent described in this comparative example step S3 is zinc borate, calcium phosphate and high melting point paraffin according to weight
Measure the mixture formed than 2:2:1.
Comparative example 2
This comparative example provides a kind of preparation method of flame retardant cable, comprises the steps of:
S1, by silver-gilt copper wire process in the periphery of high-temperature fibre, the main component of high-temperature fibre is aluminium oxide, silica
And alkali metal oxide, it is then coated with adhesive for polyurethane, makes to fit closely between every two beams high-temperature fibre, then heating is solid
Change, the high temperature resistant core that diameter is 80nm is made；
S2, by the polyvinyl chloride of 100 parts by weight, the nickelous carbonate of 3 parts by weight, the expanded graphite of 5 parts by weight, 4 parts by weight season penta
Tetrol, the amido silicon oil of 4 parts by weight, the organo montmorillonite of 5 parts by weight, the magnesium hydroxide of 8 parts by weight and 6 parts by weight polyphosphoric acid
Ammonium is uniformly mixed, and dries 4h under conditions of 85 DEG C, obtains dry fire retardant insulating blend composition；
S3, by the polyvinyl chloride of 100 parts by weight, the solid calcium of the dioctyl terephthalate of 30 parts by weight, 3.8-4.5 parts by weight
Zinc composite stabilizer, the calcium carbonate of 33 parts by weight, the clay of 10 parts by weight and 80 parts by weight tricresyl phosphate (2- chloropropyl) ester exist
It is uniformly mixed under conditions of 120 DEG C, after waiting mixed materials temperature to naturally cool to 25 DEG C, mixed material is placed in open refining and is moulded
It is plasticized on machine, discharges after being kneaded 5min, 5min is then preheated under the conditions of on vulcanizing press in 160 DEG C and 5MPa, then will pressure
Power rises to 14MPa, keeps pressure constant, discharges after hot pressing 5min, obtain dry fire retardant jacket blend composition；
S4, dry fire retardant insulating blend composition is extruded in by high temperature resistant core outer layers using plastic extruder, obtains having fire-retardant
The cable core of polyethylene layer；
S5, dry fire retardant jacket blend composition is extruded in by 5 twisted cable core outer layers using plastic extruder, be prepared
Flame retardant cable.
The partial size of nickelous carbonate described in this comparative example step S2 is 20 μm, and the partial size of the organo montmorillonite is 50nm, described
The partial size of ammonium polyphosphate is 50 μm, and the partial size of calcium carbonate described in step S3 is 20 μm.
Roll temperature is 162 DEG C before open type plastic purificating set described in this comparative example step S3, and rear roll temperature is 157 DEG C.
Extrusion temperature when extruding dry fire retardant insulating blend composition described in this comparative example step S4 is controlled at 163 DEG C,
Extrusion pressure is controlled in 163MPa.
Extrusion temperature when extruding dry fire retardant jacket blend composition described in this comparative example step S5 is controlled at 162 DEG C,
Extrusion pressure is controlled in 186MPa.
Solid calcium-zinc composite stabilizing agent described in this comparative example step S3 is zinc borate, calcium phosphate and high melting point paraffin according to weight
Measure the mixture formed than 2:2:1.
Mechanical property, anti-flammability are carried out to the cable of embodiment 1-3, comparative example 1 and comparative example 2 preparation according to national standards
Energy and electric performance test, test result is as follows shown in table 1.
Table 1
It can be seen that being added to a small amount of tricresyl phosphate (2- chloropropyl) ester and receiving for embodiment 1-3 preparation from the test data of table 1
The cable of rice antimony oxide, is added to a small amount of tricresyl phosphate (2- chloropropyl) ester but is not added with nanometer compared to prepared by comparative example 1
The cable of antimony oxide, hence it is evident that there is higher limit oxygen index, flame retardant property is more preferable；The stretching for characterizing mechanical property is strong
20 DEG C of volume resistivities decline of degree, elongation at break and characterization electric property is not obvious.May be used also from the test data of table 1
To find out, the cable for being added to a small amount of tricresyl phosphate (2- chloropropyl) ester and nanmeter antimong trioxide of embodiment 1-3 preparation, phase
Than the cable for being added to a large amount of tricresyl phosphates (2- chloropropyl) ester but being not added with nanmeter antimong trioxide prepared by comparative example 2, have
Higher tensile strength, elongation at break, limit oxygen index and 20 DEG C of volume resistivities illustrate cable of the invention compared to tradition
The cable of a large amount of fire retardants is added merely, and there is better flame resistance, mechanical property and electrical property.
Specific embodiments of the present invention are described above.It is to be appreciated that the invention is not limited to above-mentioned
Particular implementation, those skilled in the art can make various deformations or amendments within the scope of the claims, this not shadow
Ring substantive content of the invention.
Claims (10)
1. a kind of preparation method of flame retardant cable, which is characterized in that comprise the steps of:
S1, by conductive metal conductor process in the periphery of high-temperature fibre, be then coated with adhesive for polyurethane, make every two Shu Naigao
It fits closely between warm fiber, is then heating and curing, high temperature resistant core is made；
S2, by the polyvinyl chloride of 100 parts by weight, the nickelous carbonate of 2-3 parts by weight, the expanded graphite of 3-5 parts by weight, 2-4 parts by weight
Pentaerythrite, the amido silicon oil of 3-4 parts by weight, the organo montmorillonite of 3-5 parts by weight, 6-8 parts by weight magnesium hydroxide and 5-6
The ammonium polyphosphate of parts by weight is uniformly mixed, and dries 3-4h under conditions of 80-85 DEG C, is obtained dry fire retardant insulating and is blended
Material；
S3, by the polyvinyl chloride of 100 parts by weight, the solid calcium of the dioctyl terephthalate of 30 parts by weight, 3.8-4.5 parts by weight
Zinc composite stabilizer, the calcium carbonate of 30-33 parts by weight, the clay of 8-10 parts by weight, 8-13 parts by weight tricresyl phosphate (2- chlorine third
Base) nanmeter antimong trioxides of ester and 0.5-1 parts by weight is uniformly mixed under conditions of 95-120 DEG C, wait mixed materials temperature from
After being so cooled to 20-25 DEG C, mixed material is placed on open type plastic purificating set and is plasticized, discharged after being kneaded 3-5min, then flat
5min is preheated on plate vulcanizer under the conditions of 160 DEG C and 5MPa, then pressure is risen into 14MPa, keeps pressure constant, hot pressing
It discharges after 5min, obtains dry fire retardant jacket blend composition；
S4, dry fire retardant insulating blend composition is extruded in by high temperature resistant core outer layers using plastic extruder, obtains having fire-retardant
The cable core of polyethylene layer；
S5, dry fire retardant jacket blend composition is extruded in using plastic extruder by single cable core or more twisted cables
Core outer layer, is prepared flame retardant cable.
2. a kind of preparation method of flame retardant cable according to claim 1, it is characterised in that: conductive metal described in step S1
Conductor is copper wire, tinned copper wire or silver-gilt copper wire.
3. a kind of preparation method of flame retardant cable according to claim 1, it is characterised in that: high temperature resistant described in step S1 is fine
The main component of dimension is aluminium oxide, silica and alkali metal oxide.
4. a kind of preparation method of flame retardant cable according to claim 1, it is characterised in that: high temperature resistant core described in step S1
The diameter of body is 60-80nm.
5. a kind of preparation method of flame retardant cable according to claim 1, it is characterised in that: nickelous carbonate described in step S2
Partial size is 15-20 μm, and the partial size of the organo montmorillonite is 50nm, and the partial size of the ammonium polyphosphate is 40-50 μm, step S3 institute
The partial size for stating calcium carbonate is 15-20 μm.
6. a kind of preparation method of flame retardant cable according to claim 1, it is characterised in that: open refining described in step S3
Roll temperature is 158-162 DEG C before molding machine, and rear roll temperature is 153-157 DEG C.
7. a kind of preparation method of flame retardant cable according to claim 1, it is characterised in that: will be dry described in step S4
At 158-163 DEG C, extrusion pressure is controlled in 155-163MPa for extrusion temperature control when fire retardant insulating blend composition extrudes.
8. a kind of preparation method of flame retardant cable according to claim 1, it is characterised in that: will be dry described in step S5
At 158-162 DEG C, extrusion pressure is controlled in 180-186MPa for extrusion temperature control when fire retardant jacket blend composition extrudes.
9. a kind of preparation method of flame retardant cable according to claim 1, it is characterised in that: solid calcium zinc described in step S3
Compound stabilizer is the mixture that zinc borate, calcium phosphate and high melting point paraffin are formed according to weight ratio 2:2:1.
10. a kind of flame retardant cable, it is characterised in that: be prepared by the described in any item preparation methods of claim 1-9.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111875861A (en) * | 2020-07-07 | 2020-11-03 | 安徽瑞莱尔仪表有限公司 | Flame-retardant cable and preparation method thereof |
| CN113410002A (en) * | 2021-06-29 | 2021-09-17 | 友光电线电缆有限公司 | Preparation process of cable with flame-retardant and heat-insulation functions |
| CN113556833A (en) * | 2021-07-23 | 2021-10-26 | 安邦电气股份有限公司 | Flame-retardant electric tracing band |
| CN114914022A (en) * | 2022-06-13 | 2022-08-16 | 广州市孖宝电缆有限公司 | Anti-electromagnetic and flame-retardant cable |
| EP3832672B1 (en) * | 2019-12-06 | 2023-07-05 | Prysmian S.p.A. | Flame- retardant electrical cable |
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| CN105348683A (en) * | 2015-11-26 | 2016-02-24 | 王威淞 | Environmentally-friendly modified cable insulating material |
| CN106710682A (en) * | 2017-02-27 | 2017-05-24 | 张家口新叶电缆有限公司 | Novel flame-retardant cable and preparation thereof |
| CN109616236A (en) * | 2018-12-04 | 2019-04-12 | 晋源电气集团股份有限公司 | A kind of flame retardant cable and its manufacturing process |
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| CN102446586A (en) * | 2011-08-30 | 2012-05-09 | 上海贝恩科电缆有限公司 | Rat-proof termite-proof low-smoke low-halogen leadless flame-retardant control cable for elevator shaft |
| CN105348683A (en) * | 2015-11-26 | 2016-02-24 | 王威淞 | Environmentally-friendly modified cable insulating material |
| CN106710682A (en) * | 2017-02-27 | 2017-05-24 | 张家口新叶电缆有限公司 | Novel flame-retardant cable and preparation thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP3832672B1 (en) * | 2019-12-06 | 2023-07-05 | Prysmian S.p.A. | Flame- retardant electrical cable |
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| CN113410002A (en) * | 2021-06-29 | 2021-09-17 | 友光电线电缆有限公司 | Preparation process of cable with flame-retardant and heat-insulation functions |
| CN113410002B (en) * | 2021-06-29 | 2022-05-06 | 友光电线电缆有限公司 | Preparation process of cable with flame-retardant and heat-insulation functions |
| CN113556833A (en) * | 2021-07-23 | 2021-10-26 | 安邦电气股份有限公司 | Flame-retardant electric tracing band |
| CN114914022A (en) * | 2022-06-13 | 2022-08-16 | 广州市孖宝电缆有限公司 | Anti-electromagnetic and flame-retardant cable |
| CN114914022B (en) * | 2022-06-13 | 2023-02-28 | 广州市孖宝电缆有限公司 | Anti-electromagnetic and flame-retardant cable |
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