CN102969063B - High-temperature-resistant soft power cable for maritime oil and gas engineering and manufacturing method thereof - Google Patents
High-temperature-resistant soft power cable for maritime oil and gas engineering and manufacturing method thereof Download PDFInfo
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Abstract
The invention relates to a high-temperature-resistant soft power cable for maritime oil and gas engineering and a manufacturing method thereof. The power cable is characterized in that a chemical cross-linked polyolefin insulation layer is extruded at the periphery of a tin-plated annealed stranded copper conductor to form a power cable insulation wire core; a plurality of insulation wire cores are stranded to form a cable core; an inner sheath is extruded at the periphery of the cable core; the periphery of the inner sheath inner sheath inner sheath is coated with a copper alloy wire weaving armor layer; the periphery of the copper alloy wire weaving armor layer is wrapped with a water-proof wrapping tape; and an outer sheath is extruded at the periphery of the water-proof wrapping tape. The insulation layer is prepared from the following raw material components: 12 parts of ethylene/vinyl acetate copolymer, 6 parts of high density polyethylene, 2 parts of ethylene-methacrylic acid copolymer, 0.5-1 part of cross-linking agent DCP (Dicumyl Peroxide), 0.4-0.9 part of antioxidant 1076, 0.2-0.4 part of antioxidant DNP, 0.2-1 part of lubricant stearic acid, 25-30 parts of flame retardant aluminum hydroxide, 0.6-1 part of flame retardant red phosphorus, and 0.05-0.1 parts of ultraviolet ray absorber UV-326. The insulation layer of the cable is excellent in high-temperature resistance and ageing resistance, and long in service life.
Description
Technical field
The present invention relates to a kind of power cable, particularly a kind of offshore oil and gas engineering heat-resisting soft power cable.The invention still further relates to the manufacture method of heat-resisting soft power cable for a kind of offshore oil and gas engineering.
Background technology
Exploitation along with the offshore oil and gas energy; oil gas engineering is more and more with cable; performance requirement is more and more higher; especially insulation and the metal armouring as cable weight main composition part need to be reduced to greatest extent, needs to meet the mechanical protection of cable, cable to be possessed to the many moisture of the oil gas of adaptation engineering-environment corrodes infiltration and cable can the requirement in useful life of safe operation about 25 years simultaneously.In prior art, in order to alleviate cable weight, almost all adopt without inner sleeve cable or adopt zinc-coated wire to weave as armouring, cross-linking radiation polyolefin as insulating and sheath, but nonetheless, with regard to the supporting angle of integrated engineering, the weight that cable alleviates is also no more than 10%.Prior art adopts cross-linking radiation polyolefin as insulation, and its thermal endurance class is up to 150 ℃, far can not meet the crosslinked demand of sheath, and the anti-water permeation performance of irradiation crosslinked polyolefin insulating and sheath is very poor, cannot meet the Long Term Contact with moisture.
Publication number is that the Chinese patent of CN 201758046 U discloses a kind of cross-linked power cable, it adopts crosslinked polyetylene insulated, conductor sets gradually internal shield, insulating barrier and outer shielding layer outward, at external lapping layer and the oversheath of setting gradually of three phase isolated core, space between three phase isolated core and lapping layer is provided with filler, in insulated wire cores, be also provided with copper strip shielding layer, this copper strip shielding layer is wrapped on outer shielding layer surface.This patent has adopted crosslinked polyetylene insulated, although simple in structure, with low cost, it can not meet the requirement of high temperature resistant, the large ampacity of offshore oil and gas engineering cable, the erosion of many moisture.
Publication number is that the Chinese invention patent of CN101565527A discloses a kind of 125 DEG C irradiated crosslinking, although it has met the high temperature heat-resistant ageing properties requirement of 125 ℃, but it only can be for cable cover(ing), insulation property are poor, are not suitable as insulating material.
Publication number is that the Chinese invention patent of CN102617923A discloses a kind of irradiated crosslinking low-smoke and halogen-free high flame retardant polyolefin insulation material, its heat-proof aging is only 135 ℃, according to correlation standard, this material only can bear 90 ℃ of long-term maximum operating temperatures, cannot meet offshore oil and gas engineering cable high-temperature operation environmental requirement.
Summary of the invention
Primary and foremost purpose of the present invention is, overcomes problems of the prior art, and a kind of offshore oil and gas engineering heat-resisting soft power cable is provided, and its insulating barrier is high temperature resistant, ageing-resistant performance is excellent, long service life.
For realizing above object, a kind of offshore oil and gas engineering heat-resisting soft power cable provided by the present invention, the periphery of zinc-plated annealing twisted copper conductors is extruded with chemical crosslinking polyolefin insulation layer and forms power cable insulation core, many described insulated wire cores are with the stranded formation cable core of stranded lay ratio dextrad of 18 ~ 20 times, the periphery of described cable core is extruded with inner sheath, the periphery of described inner sheath is coated with copper alloy silk braiding armour, the periphery of described copper alloy silk braiding armour is surrounded with waterproof band, and the periphery of described waterproof band is extruded with oversheath.
With respect to prior art, the present invention has obtained following beneficial effect: this cable is extruded with chemical crosslinking polyolefin insulation layer outward in zinc-plated annealing twisted copper conductors, high temperature resistant, ageing-resistant performance is excellent, long service life; Copper alloy silk braiding armour both can be every magnetic, and the loss of avoiding eddy current magnetic hysteresis to cause, increases ampacity, mechanical strength is larger than copper again, cost is cheap than copper, and has excellent anti-seawater corrosion performance, for the long-term security operation of cable, benefits.
As preferred version of the present invention, raw material components and the weight content of described chemical crosslinking polyolefin insulation layer are as follows, and raw material components and the weight content of described chemical crosslinking polyolefin insulation layer are as follows, ethylene/vinyl acetate copolymer: 12 parts; High density polyethylene (HDPE): 6 parts; Ethylene-methacrylic acid copolymer: 2 parts; Crosslinking agent cumyl peroxide: 0.5～1 part; Antioxidant β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid octadecyl ester: 0.4～0.9 part; Antioxidant N, N '-bis--betanaphthyl p-phenylenediamine (PPD): 0.2～0.4 part; Lubricant stearic acid: 0.2～1 part; Fire retardant aluminium hydroxide: 25～30 parts; Fire retardant red phosphorus: 0.6～1 part; Ultra-violet absorber 2-(the 2'-hydroxyl-3'-tert-butyl group-5'-aminomethyl phenyl)-5-chlorinated benzotriazole: 0.05～0.1 part.It is that hydrated alumina is as fire retardant that chemical crosslinking polyolefin insulation layer of the present invention adopts aluminium hydroxide, it contains 3 hydrones, at 250 ℃, start to decompose, discharge hydrone and absorb heat and reduced environment temperature, the steam discharging has played again the effect of combustable gas concentration in dilution gas phase, and the carbide combination of the alundum (Al2O3) of generation and the polymer surfaces of burning, forms diaphragm, cut off the intrusion of heat energy and oxygen, played fire retardation; Aluminium hydroxide has low cigarette and reduces the effect that carbon monoxide occurs, environment-protecting clean simultaneously.When fire retardant red phosphorus can prevent polymer combustion, produce drippage, with aluminium hydroxide and with forming the charring layer of skeleton character on its surface when the polymer combustion, avoid polymer melting drippage.Antioxidant β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid octadecyl ester claims again antioxidant 1076, antioxidant N, N '-bis--betanaphthyl p-phenylenediamine (PPD) claims again antioxidant DNP, antioxidant 1076 and antioxidant DNP odorless, tasteless, nontoxic, volatility is little, good thermal stability, have good anti-aging and nondiscolouring, has good compatibility with ethylene/vinyl acetate copolymer, high density polyethylene (HDPE) and ethylene-methacrylic acid copolymer.The heat resistance of crosslinking agent cumyl peroxide is good, and cross-linking curve is steady, for the heat resistance of polymer, has excellent assurance.High density polyethylene (HDPE) has good thermal endurance, chemical resistance and dielectric property, and intact compatible with ethylene/vinyl acetate copolymer and ethylene-methacrylic acid copolymer, and in ethylene-methacrylic acid copolymer, contain the acrylic acid groups of polarity, can greatly improve the intramolecular bond cohesion of insulating material, the reactivity that reduces eater, plays the object acidproof, alkaline-resisting, high temperature heat-resistant is aging.Lubricant stearic acid can improve the process industrial art performance of Insulation Material, improve processing speed, can improve the quality of Insulation Material simultaneously, prevent that Insulation Material from adding the adhesion on man-hour and equipment or other contact material surfaces, Insulation Material in the course of processing is had good in roller and release property, guarantee Insulation Material any surface finish, the kinematic viscosity while reducing Insulation Material internal friction and melting, prevents from crossing thermal impact serviceability because internal friction causes Insulation Material; Because its purity is higher, for the insulation property of improving Insulation Material, there is facilitation simultaneously.Ultra-violet absorber 2-(the 2'-hydroxyl-3'-tert-butyl group-5'-aminomethyl phenyl)-5-chlorinated benzotriazole claims again ultraviolet absorbent uv-326, has volatility little, and heat-resisting advantage has positive role for the high-temperature resistant grade of Insulation Material.Its maximum amount of electro-insulating rubber of the present invention is determined working temperature and has been brought up to 125 ℃ from 90 ℃ of prior art, make the rated current-carrying capacity of same specification conductor improve approximately 50%, the in the situation that of the same electric current of transmission, required cross-sectional area of conductor is long-pending can reduce approximately 50%, adapted to the degradation with aging impact of the many high-temperature gases of oil gas engineering on insulating polymer, extended useful life, from with oil gas engineering design life-span matching degree, save the replacing to cable midway of oil gas engineer operation life-span, saved manpower, material resources and financial resources cost, the requirements of the times of the energy-saving and emission-reduction consumption reduction of current promotion have been met.
As preferred version of the present invention, raw material components and the weight content of described chemical crosslinking polyolefin insulation layer are as follows, ethylene/vinyl acetate copolymer: 12 parts; High density polyethylene (HDPE): 6 parts; Ethylene-methacrylic acid copolymer: 2 parts; Crosslinking agent cumyl peroxide: 0.5 part; Antioxidant β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid octadecyl ester: 0.4 part; Antioxidant N, N '-bis--betanaphthyl p-phenylenediamine (PPD): 0.2 part; Lubricant stearic acid: 0.2 part; Fire retardant aluminium hydroxide: 25 parts; Fire retardant red phosphorus: 0.6 part; Ultra-violet absorber 2-(the 2'-hydroxyl-3'-tert-butyl group-5'-aminomethyl phenyl)-5-chlorinated benzotriazole: 0.05 part.
As preferred version of the present invention, raw material components and the weight content of described chemical crosslinking polyolefin insulation layer are as follows, ethylene/vinyl acetate copolymer: 12 parts; High density polyethylene (HDPE): 6 parts; Ethylene-methacrylic acid copolymer: 2 parts; Crosslinking agent cumyl peroxide: 0.8 part; Antioxidant β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid octadecyl ester: 0.7 part; Antioxidant N, N '-bis--betanaphthyl p-phenylenediamine (PPD): 0.3 part; Lubricant stearic acid: 0.6 part; Fire retardant aluminium hydroxide: 28 parts; Fire retardant red phosphorus: 0.8 part; Ultra-violet absorber 2-(the 2'-hydroxyl-3'-tert-butyl group-5'-aminomethyl phenyl)-5-chlorinated benzotriazole: 0.08 part.
As preferred version of the present invention, raw material components and the weight content of described chemical crosslinking polyolefin insulation layer are as follows, ethylene/vinyl acetate copolymer: 12 parts; High density polyethylene (HDPE): 6 parts; Ethylene-methacrylic acid copolymer: 2 parts; Crosslinking agent cumyl peroxide: 1 part; Antioxidant β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid octadecyl ester: 0.9 part; Antioxidant N, N '-bis--betanaphthyl p-phenylenediamine (PPD): 0.4 part; Lubricant stearic acid: 1 part; Fire retardant aluminium hydroxide: 30 parts; Fire retardant red phosphorus: 1 part; Ultra-violet absorber 2-(the 2'-hydroxyl-3'-tert-butyl group-5'-aminomethyl phenyl)-5-chlorinated benzotriazole: 0.1 part.
As preferred version of the present invention, raw material components and the weight content of described copper alloy silk braiding armour are as follows, copper: iron: lead: zinc=(89.0 ~ 91.0): (0.03 ~ 0.05): (0.01 ~ 0.05): 10.This copper alloy silk braiding armour both can be every magnetic, and the loss of avoiding eddy current magnetic hysteresis to cause, increases ampacity, mechanical strength is larger than copper again, cost is cheap than copper, and has excellent anti-seawater corrosion performance, for the long-term security operation of cable, benefits.
Another object of the present invention is, the manufacture method of a kind of offshore oil and gas engineering with heat-resisting soft power cable is provided, and its insulating barrier of the cable insulation that the method manufacture forms is high temperature resistant, ageing-resistant performance is excellent, long service life.
For realizing above object, the manufacture method of heat-resisting soft power cable for offshore oil and gas engineering provided by the present invention, comprise the following steps successively: the periphery in zinc-plated annealing twisted copper conductors extrudes chemical crosslinking polyolefin insulation layer formation power cable insulation core, many described insulated wire cores are with the stranded formation cable core of stranded lay ratio dextrad of 18 ~ 20 times, periphery at cable core extrudes inner sheath, periphery coated copper B alloy wire braiding armour at described inner sheath, then at described copper alloy silk, weave the wrapped waterproof band of periphery of armour, finally the periphery at described waterproof band extrudes oversheath, the preparation method of described chemical crosslinking polyolefin insulation layer is as follows: (1) prepares raw material, ethylene/vinyl acetate copolymer: 12 parts by following component and weight content, high density polyethylene (HDPE): 6 parts, ethylene-methacrylic acid copolymer: 2 parts, crosslinking agent cumyl peroxide: 0.5～1 part, antioxidant β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid octadecyl ester: 0.4～0.9 part, antioxidant N, N '-bis--betanaphthyl p-phenylenediamine (PPD): 0.2～0.4 part, lubricant stearic acid: 0.2～1 part, fire retardant aluminium hydroxide: 25～30 parts, fire retardant red phosphorus: 0.6～1 part, ultra-violet absorber 2-(the 2'-hydroxyl-3'-tert-butyl group-5'-aminomethyl phenyl)-5-chlorinated benzotriazole: 0.05～0.1 part, (2) first banbury temperature is risen to 130 ℃～150 ℃, add successively above-mentioned ethylene/vinyl acetate copolymer, high density polyethylene (HDPE) and ethylene-methacrylic acid copolymer, and plastify mixing even, then add antioxidant β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid octadecyl ester, antioxidant N, N '-bis--betanaphthyl p-phenylenediamine (PPD), ultra-violet absorber 2-(the 2'-hydroxyl-3'-tert-butyl group-5'-aminomethyl phenyl)-5-chlorinated benzotriazole, fire retardant aluminium hydroxide and fire retardant red phosphorus, and mixing evenly rear blanking, mixing roll temperature is risen to 60 ℃～70 ℃, above-mentioned compound is dropped in this mixing roll, add lubricant stearic acid and crosslinking agent cumyl peroxide mixing evenly, then glue stuff compounding is moved on three-roller open mill and beat triangle Bao Bingjing thin-pass 4～6 times, roller temperature control is at 60 ℃ ± 5 ℃, front roll temperature is higher 3～5 ℃ than rear roll temperature, cutting after thin-pass completes, cooling standby.
With respect to prior art, the present invention has obtained following beneficial effect: the cable that the method manufacture forms, it is that hydrated alumina is as fire retardant that its chemical crosslinking polyolefin insulation layer adopts aluminium hydroxide, it contains 3 hydrones, at 250 ℃, start to decompose, discharge hydrone and absorb heat and reduced environment temperature, the steam discharging has played again the effect of combustable gas concentration in dilution gas phase, the carbide combination of the alundum (Al2O3) generating and the polymer surfaces of burning, form diaphragm, cut off the intrusion of heat energy and oxygen, played fire retardation; Aluminium hydroxide has low cigarette and reduces the effect that carbon monoxide occurs, environment-protecting clean simultaneously.When fire retardant red phosphorus can prevent polymer combustion, produce drippage, with aluminium hydroxide and with forming the charring layer of skeleton character on its surface when the polymer combustion, avoid polymer melting drippage.Antioxidant β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid octadecyl ester claims again antioxidant 1076, antioxidant N, N '-bis--betanaphthyl p-phenylenediamine (PPD) claims again antioxidant DNP, antioxidant 1076 and antioxidant DNP odorless, tasteless, nontoxic, volatility is little, good thermal stability, have good anti-aging and nondiscolouring, has good compatibility with ethylene/vinyl acetate copolymer, high density polyethylene (HDPE) and ethylene-methacrylic acid copolymer.The heat resistance of crosslinking agent cumyl peroxide is good, and cross-linking curve is steady, for the heat resistance of polymer, has excellent assurance.High density polyethylene (HDPE) has good thermal endurance, chemical resistance and dielectric property, and intact compatible with ethylene/vinyl acetate copolymer and ethylene-methacrylic acid copolymer, and in ethylene-methacrylic acid copolymer, contain the acrylic acid groups of polarity, can greatly improve the intramolecular bond cohesion of insulating material, the reactivity that reduces eater, plays the object acidproof, alkaline-resisting, high temperature heat-resistant is aging.Lubricant stearic acid can improve the process industrial art performance of Insulation Material, improve processing speed, can improve the quality of Insulation Material simultaneously, prevent that Insulation Material from adding the adhesion on man-hour and equipment or other contact material surfaces, Insulation Material in the course of processing is had good in roller and release property, guarantee Insulation Material any surface finish, the kinematic viscosity while reducing Insulation Material internal friction and melting, prevents from crossing thermal impact serviceability because internal friction causes Insulation Material; Because its purity is higher, for the insulation property of improving Insulation Material, there is facilitation simultaneously.Ultra-violet absorber 2-(the 2'-hydroxyl-3'-tert-butyl group-5'-aminomethyl phenyl)-5-chlorinated benzotriazole claims again ultraviolet absorbent uv-326, has volatility little, and heat-resisting advantage has positive role for the high-temperature resistant grade of Insulation Material.Its maximum amount of electro-insulating rubber of the present invention is determined working temperature and has been brought up to 125 ℃ from 90 ℃ of prior art, make the rated current-carrying capacity of same specification conductor improve approximately 50%, the in the situation that of the same electric current of transmission, required cross-sectional area of conductor is long-pending can reduce approximately 50%, adapted to the degradation with aging impact of the many high-temperature gases of oil gas engineering on insulating polymer, extended useful life, from with oil gas engineering design life-span matching degree, save the replacing to cable midway of oil gas engineer operation life-span, saved manpower, material resources and financial resources cost, the requirements of the times of the energy-saving and emission-reduction consumption reduction of current promotion have been met.
As preferred version of the present invention, raw material components and the weight content of described copper alloy silk braiding armour are as follows, copper: iron: lead: zinc=(89.0 ~ 91.0): (0.01 ~ 0.05): (0.01 ~ 0.05): 10.This copper alloy silk braiding armour both can be every magnetic, and the loss of avoiding eddy current magnetic hysteresis to cause, increases ampacity, mechanical strength is larger than copper again, cost is cheap than copper, and has excellent anti-seawater corrosion performance, for the long-term security operation of cable, benefits.
As preferred version of the present invention, described chemical crosslinking polyolefin insulation layer adopts cold feeding manner to extrude on twin-screw rubber extruding machine, the draw ratio of screw rod is (15～25): 1, fuselage one district's temperature of twin-screw rubber extruding machine is 110 ℃ ± 5 ℃, fuselage two district's temperature are 120 ℃ ± 5 ℃, head temperature is 130 ℃ ± 5 ℃, and mold temperature is 140 ℃ ± 5 ℃, and rubber extruding machine cooled screw mode is water cooling.
As preferred version of the present invention, when described chemical crosslinking polyolefin insulation layer is extruded on twin-screw rubber extruding machine, the line length of holding of core rod is 1:(1～1.2 with the external diameter ratio of extruding), the gap between core rod and die sleeve is 1～1.5mm; Described electro-insulating rubber enters cross-linking tube road from the head of described twin-screw rubber extruding machine is extruded, and the temperature of described crosslinked pipeline is 160 ℃～180 ℃.
Accompanying drawing explanation
Fig. 1 is the structural representation of heat-resisting soft power cable for offshore oil and gas engineering of the present invention.
In figure: 1. zinc-plated annealing twisted copper conductors; 2. chemical crosslinking polyolefin insulation layer; 3. inner sheath; 4. copper alloy silk weaves armour; 5. waterproof band; 6. oversheath.
Embodiment
Embodiment mono-
As shown in Figure 1, offshore oil and gas engineering heat-resisting soft power cable of the present invention, manufacture according to the following steps: the periphery in zinc-plated annealing twisted copper conductors 1 extrudes chemical crosslinking polyolefin insulation layer 2 formation power cable insulation cores, many insulated wire cores are with the stranded formation cable core of stranded lay ratio dextrad of 18 times, periphery at cable core extrudes inner sheath 3, periphery coated copper B alloy wire braiding armour 4 at inner sheath 3, then at the wrapped waterproof band 5 of periphery of copper alloy silk braiding armour, finally the periphery at waterproof band 5 extrudes oversheath 6.
Wherein, the minimum thickness of chemical crosslinking polyolefin insulation layer 2 is not less than 90% of nominal value, and maximum ga(u)ge is not more than 110% of nominal value, and the diameter deviation that arbitrary vertical cross-section records is no more than 10%.The preparation process of chemical crosslinking polyolefin insulation layer 2 electro-insulating rubbers used is as follows: (1) prepares raw material, ethylene/vinyl acetate copolymer: 12 parts by following component and weight content; High density polyethylene (HDPE): 6 parts; Ethylene-methacrylic acid copolymer: 2 parts; Crosslinking agent cumyl peroxide: 0.5 part; Antioxidant β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid octadecyl ester: 0.4 part; Antioxidant N, N '-bis--betanaphthyl p-phenylenediamine (PPD): 0.2 part; Lubricant stearic acid: 0.2 part; Fire retardant aluminium hydroxide: 25 parts; Fire retardant red phosphorus: 0.6 part; Ultra-violet absorber 2-(the 2'-hydroxyl-3'-tert-butyl group-5'-aminomethyl phenyl)-5-chlorinated benzotriazole: 0.05 part; (2) first banbury temperature is risen to 130 ℃, add successively above-mentioned ethylene/vinyl acetate copolymer, high density polyethylene (HDPE) and ethylene-methacrylic acid copolymer, and plastify mixing even, then add antioxidant β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid octadecyl ester, antioxidant N, N '-bis--betanaphthyl p-phenylenediamine (PPD), ultra-violet absorber 2-(the 2'-hydroxyl-3'-tert-butyl group-5'-aminomethyl phenyl)-5-chlorinated benzotriazole, fire retardant aluminium hydroxide and fire retardant red phosphorus, and mixing evenly rear blanking; Mixing roll temperature is risen to 60 ℃, above-mentioned compound is dropped in this mixing roll, add lubricant stearic acid and crosslinking agent cumyl peroxide mixing evenly, then glue stuff compounding is moved on three-roller open mill and beat triangle Bao Bingjing thin-pass 4 times, roller temperature control is at 55 ℃, front roll temperature is higher 3 ℃ than rear roll temperature, cutting after thin-pass completes, cooling standby; Chemical crosslinking polyolefin insulation layer 2 adopts cold feeding manner to extrude on twin-screw rubber extruding machine, the draw ratio of screw rod is 15:1, fuselage one district's temperature of twin-screw rubber extruding machine is 105 ℃, fuselage two district's temperature are 115 ℃, head temperature is 125 ℃, mold temperature is 135 ℃, and rubber extruding machine cooled screw mode is water cooling.When chemical crosslinking polyolefin insulation layer 2 is extruded, the line length of holding of core rod is 1:1 with the external diameter ratio of extruding, and the gap between core rod and die sleeve is 1mm; Electro-insulating rubber enters cross-linking tube road from the head of twin-screw rubber extruding machine is extruded, and the temperature of crosslinked pipeline is 160 ℃.
The stranded copper wire of the zinc-plated annealing of the 2nd class that zinc-plated annealing twisted copper conductors 1 adopts in IEC 60228 standards, zinc-plated employing plating mode substitutes traditional hot tinning mode, has avoided conductor zinc-plated inhomogeneous and tin thickness is inhomogeneous; Easily occur that list edge adheres to the drawback of conductive surface, after avoiding conductor oxidative phenomena to occur; There is chemical reaction with insulation in copper, reduces the risk of insulating barrier electric property and physical and mechanical properties.
Raw material components and the weight content of copper alloy silk braiding armour 4 are as follows, copper: iron: lead: zinc=89.0:0.03:0.01:10.The diameter of armouring braided wires is 0.31 mm, and tensile strength is 260MPa, and elongation at break is not less than 25%.
Embodiment bis-
Offshore oil and gas engineering heat-resisting soft power cable of the present invention, manufacture according to the following steps: the periphery in zinc-plated annealing twisted copper conductors 1 extrudes chemical crosslinking polyolefin insulation layer 2 formation power cable insulation cores, many insulated wire cores are with the stranded formation cable core of stranded lay ratio dextrad of 19 times, periphery at cable core extrudes inner sheath 3, periphery coated copper B alloy wire braiding armour 4 at inner sheath 3, then at the wrapped waterproof band 5 of periphery of copper alloy silk braiding armour, finally the periphery at waterproof band 5 extrudes oversheath 6.
Wherein, the minimum thickness of chemical crosslinking polyolefin insulation layer 2 is not less than 90% of nominal value, and maximum ga(u)ge is not more than 110% of nominal value, and the diameter deviation that arbitrary vertical cross-section records is no more than 10%.The preparation process of chemical crosslinking polyolefin insulation layer 2 electro-insulating rubbers used is as follows: (1) prepares raw material, ethylene/vinyl acetate copolymer: 12 parts by following component and weight content; High density polyethylene (HDPE): 6 parts; Ethylene-methacrylic acid copolymer: 2 parts; Crosslinking agent cumyl peroxide: 0.8 part; Antioxidant β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid octadecyl ester: 0.7 part; Antioxidant N, N '-bis--betanaphthyl p-phenylenediamine (PPD): 0.3 part; Lubricant stearic acid: 0.6 part; Fire retardant aluminium hydroxide: 28 parts; Fire retardant red phosphorus: 0.8 part; Ultra-violet absorber 2-(the 2'-hydroxyl-3'-tert-butyl group-5'-aminomethyl phenyl)-5-chlorinated benzotriazole: 0.08 part; (2) first banbury temperature is risen to 140 ℃, add successively above-mentioned ethylene/vinyl acetate copolymer, high density polyethylene (HDPE) and ethylene-methacrylic acid copolymer, and plastify mixing even, then add antioxidant β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid octadecyl ester, antioxidant N, N '-bis--betanaphthyl p-phenylenediamine (PPD), ultra-violet absorber 2-(the 2'-hydroxyl-3'-tert-butyl group-5'-aminomethyl phenyl)-5-chlorinated benzotriazole, fire retardant aluminium hydroxide and fire retardant red phosphorus, and mixing evenly rear blanking; Mixing roll temperature is risen to 65 ℃, above-mentioned compound is dropped in this mixing roll, add lubricant stearic acid and crosslinking agent cumyl peroxide mixing evenly, then glue stuff compounding is moved on three-roller open mill and beat triangle Bao Bingjing thin-pass 5 times, roller temperature control is at 60 ℃, front roll temperature is higher 4 ℃ than rear roll temperature, cutting after thin-pass completes, cooling standby; Chemical crosslinking polyolefin insulation layer 2 adopts cold feeding manner to extrude on twin-screw rubber extruding machine, the draw ratio of screw rod is 20:1, fuselage one district's temperature of twin-screw rubber extruding machine is 110 ℃, fuselage two district's temperature are 120 ℃, head temperature is 130 ℃, mold temperature is 140 ℃, and rubber extruding machine cooled screw mode is water cooling.When chemical crosslinking polyolefin insulation layer 2 is extruded, the line length of holding of core rod is 1:1.1 with the external diameter ratio of extruding, and the gap between core rod and die sleeve is 1.2mm; Electro-insulating rubber enters cross-linking tube road from the head of twin-screw rubber extruding machine is extruded, and the temperature of crosslinked pipeline is 170 ℃.
The stranded copper wire of the zinc-plated annealing of the 2nd class that zinc-plated annealing twisted copper conductors 1 adopts in IEC 60228 standards, zinc-plated employing plating mode substitutes traditional hot tinning mode.
Raw material components and the weight content of copper alloy silk braiding armour 4 are as follows, copper: iron: lead: zinc=90:0.04:0.03:10.The diameter of armouring braided wires is 0.32mm, and tensile strength is 300MPa, and elongation at break is not less than 25%.
Embodiment tri-
Offshore oil and gas engineering heat-resisting soft power cable of the present invention, manufacture according to the following steps: the periphery in zinc-plated annealing twisted copper conductors 1 extrudes chemical crosslinking polyolefin insulation layer 2 formation power cable insulation cores, many insulated wire cores are with the stranded formation cable core of stranded lay ratio dextrad of 20 times, periphery at cable core extrudes inner sheath 3, periphery coated copper B alloy wire braiding armour 4 at inner sheath 3, then at the wrapped waterproof band 5 of periphery of copper alloy silk braiding armour, finally the periphery at waterproof band 5 extrudes oversheath 6.
Wherein, the minimum thickness of chemical crosslinking polyolefin insulation layer 2 is not less than 90% of nominal value, and maximum ga(u)ge is not more than 110% of nominal value, and the diameter deviation that arbitrary vertical cross-section records is no more than 10%.The preparation process of chemical crosslinking polyolefin insulation layer 2 electro-insulating rubbers used is as follows: (1) prepares raw material, ethylene/vinyl acetate copolymer: 12 parts by following component and weight content; High density polyethylene (HDPE): 6 parts; Ethylene-methacrylic acid copolymer: 2 parts; Crosslinking agent cumyl peroxide: 1 part; Antioxidant β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid octadecyl ester: 0.9 part; Antioxidant N, N '-bis--betanaphthyl p-phenylenediamine (PPD): 0.4 part; Lubricant stearic acid: 1 part; Fire retardant aluminium hydroxide: 30 parts; Fire retardant red phosphorus: 1 part; Ultra-violet absorber 2-(the 2'-hydroxyl-3'-tert-butyl group-5'-aminomethyl phenyl)-5-chlorinated benzotriazole: 0.1 part; (2) first banbury temperature is risen to 150 ℃, add successively above-mentioned ethylene/vinyl acetate copolymer, high density polyethylene (HDPE) and ethylene-methacrylic acid copolymer, and plastify mixing even, then add antioxidant β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid octadecyl ester, antioxidant N, N '-bis--betanaphthyl p-phenylenediamine (PPD), ultra-violet absorber 2-(the 2'-hydroxyl-3'-tert-butyl group-5'-aminomethyl phenyl)-5-chlorinated benzotriazole, fire retardant aluminium hydroxide and fire retardant red phosphorus, and mixing evenly rear blanking; Mixing roll temperature is risen to 70 ℃, above-mentioned compound is dropped in this mixing roll, add lubricant stearic acid and crosslinking agent cumyl peroxide mixing evenly, then glue stuff compounding is moved on three-roller open mill and beat triangle Bao Bingjing thin-pass 6 times, roller temperature control is at 65 ℃, front roll temperature is higher 5 ℃ than rear roll temperature, cutting after thin-pass completes, cooling standby; Chemical crosslinking polyolefin insulation layer 2 adopts cold feeding manner to extrude on twin-screw rubber extruding machine, the draw ratio of screw rod is 25:1, fuselage one district's temperature of twin-screw rubber extruding machine is 115 ℃, fuselage two district's temperature are 125 ℃, head temperature is 135 ℃, mold temperature is 145 ℃, and rubber extruding machine cooled screw mode is water cooling.When chemical crosslinking polyolefin insulation layer 2 is extruded, the line length of holding of core rod is 1:1.2 with the external diameter ratio of extruding, and the gap between core rod and die sleeve is 1.5mm; Electro-insulating rubber enters cross-linking tube road from the head of twin-screw rubber extruding machine is extruded, and the temperature of crosslinked pipeline is 180 ℃.
The stranded copper wire of the zinc-plated annealing of the 2nd class that zinc-plated annealing twisted copper conductors 1 adopts in IEC 60228 standards, zinc-plated employing plating mode substitutes traditional hot tinning mode.
Raw material components and the weight content of copper alloy silk braiding armour 4 are as follows, copper: iron: lead: zinc=91.0:0.05:0.05:10.The diameter of armouring braided wires is 0.33 mm, and tensile strength is 345MPa, and elongation at break is not less than 25%.
In embodiment mono-to embodiment tri-, the physical and mechanical properties of armouring braided wires is as follows: 1) toughness: one end of the sample that is 50 ~ 70mm by length clips in the level of brave bench vice and, between parallel rounding opposite side, vertically stretches on brave bench vice.Spring scale is connected on another free end of sample, grasping the tension force that spring scale makes to put on sample is 1.0 ± 0.1 Ns.Keeping making the alternately brave bench vice limit 90-degree bent perpendicular to rounding to both direction of sample under the condition of this tension force, crooked speed is 45 ~ 50 beats/min, and sample carries out 90 ° of bendings and the number of times that do not fracture is not less than 10 times.2) elasticity: on the steel cylinder coupon that is 6.4mm at diameter, one end of the braided wires sample that is 254mm by length is fixed on coupon, make it contact with the curved surface of coupon and become plumbness with coupon axis, the other end of sample is hung on spring scale, with hand spring scale make sample on coupon around 4 circles, keeping sample tension force is 1.1 ± 0.1 Ns.Finally sample Panasonic from spring scale is come, and allow it in enclosing around state, at middle part, measurement is not more than 9.5mm to the coil outer diameter forming on coupon.
The insulating barrier of embodiment mono-to embodiment tri-is carried out to insulation resistance (15.6 ℃ time) test result as shown in table 1.
Table 1
| ? | Unit | Standard-required | Embodiment mono- | Embodiment bis- | Embodiment tri- |
| Insulation resistance (15.6 ℃) | MΩ·km | ≥3050 | 3870 | 4620 | 4080 |
Insulating barrier in embodiment mono-to embodiment tri-is accelerated to water absorption test, 75 ℃ of immersions, test dielectric constant and ac capacitor increment rate under water, result is as table 2.The numerical value recording in table be respectively the 14th day with the difference of the 1st day, the 7th day.
Table 2
| ? | Unit | Standard-required | Embodiment mono- | Embodiment bis- | Embodiment tri- |
| Dielectric constant | ? | 6.0 | 3.4 | 2.8 | 3.1 |
| Electric capacity increment rate 14-1(d) | % | ≤3.0 | 0.4 | 0.5 | 0.6 |
| Electric capacity increment rate 14-7(d) | % | ≤1.5 | 0.1 | 0.1 | 0.2 |
| The electric capacity coefficient of stability after 14 days | % | ≤0.5 | 0.1 | 0.1 | 0.2 |
The insulating barrier of embodiment mono-to embodiment tri-is carried out to aging front measuring mechanical property result as table 3:
Table 3
| ? | Unit | Standard-required | Embodiment mono- | Embodiment bis- | Embodiment tri- |
| Tensile strength | N/mm2 | ≥12.5 | 14.5 | 15.6 | 17.1 |
| Elongation at break | % | ≥250 | 310 | 380 | 295 |
The insulating barrier of embodiment mono-to embodiment tri-is carried out to the measuring mechanical property of watertight aircase after aging, and test result is as table 4, aging condition: 160 ± 1 ℃ of temperature, time: 168h.
Table 4
The test result that insulating barrier in embodiment mono-to embodiment tri-is carried out to heat distortion test is as table 5, experimental condition: 150 ℃ for the treatment of temperatures.
Table 5
Finished cable to embodiment mono-to embodiment tri-carries out ozone resistance test, and result of the test is as table 6, experimental condition: 90 ± 2 ℃ of temperature, time 24h, ozone concentration 0.030%.
Table 6
| ? | Standard-required | Embodiment mono- | Embodiment bis- | Embodiment tri- |
| Ozone resistance test | Surface is without cracking | Without cracking | Without cracking | Without cracking |
Insulating barrier in embodiment mono-to embodiment tri-is carried out to VW-1 burning test result as table 7.
Table 7
Insulating barrier heat in embodiment mono-to embodiment tri-is carried out to hot elongation test, and result is as table 8, experimental condition: 175 ± 1 ℃ for the treatment of temperatures, duration 15 min, mechanical stress 20 N/cm2.
Table 8
Insulated wire cores to embodiment mono-to embodiment tri-is carried out ultraviolet-resistant aging result of the test as table 9, experimental condition: employing 6kW hernia lamp irradiates and be equipped with the hydraulic pressure water spray of 0.12～0.15MPa, according to 120 minutes, for carrying out cycle ultraviolet ray, one-period irradiates, wherein water spray, illumination simultaneously in 18 minutes, independent illumination in another 102 minutes, exposure irradiation is 1000 hours altogether, then sample is placed in to room temperature environment lower 20 hours, observe sample outward appearance, outward appearance should be without be full of cracks, and carrying out tensile strength and elongation at break test, the retention rate of the two all should be not less than 75%.
Table 9
Finished cable to embodiment mono-to embodiment tri-carries out the erosion test of anti-seawater moisture, result of the test is as table 10, experimental condition: by three long for the finished cable sample of 1.1m is placed in temperature, be that the solution that saliferous (NaCl) mass concentration of 60 ± 1 ℃ is 20% soaks 10 days.Cable adopts U-shaped bending, sample two ends respectively to have 30cm to surface while soaking; Immersion finishes rear cable can be by the withstand voltage test of AC3.5kV/5min; By cable winding, at diameter, be on the circular shaft of 9 times of sample of cable external diameters, insulating surface range estimation visible crack.
Table 10
Finished cable to embodiment mono-to embodiment tri-carries out low temperature bend test, result of the test is as table 11, experimental condition: 40 ℃ of test chambers of finished cable – are placed after 4h, keeping this temperature is to be wound around 3 circles on the circular shaft of the outside diameter of cable of 12 times at diameter by sample, then be withdrawn into original position, then be wound around round about again 3 circles, more stretching.This program is proceeded 9 times, and total degree is reached 10 times.Range estimation visible crack after finishing, and carry out the withstand voltage test of AC3.5kV/5min.
Table 11
Finished cable to embodiment mono-to embodiment tri-carries out low-temperature impact test, result of the test is as table 12, experimental condition: the tested sample of cable that is 0.13m by length is placed in-35 ℃ of test chambers and places 4h, then sample is placed in the wooden plate that is of a size of 50mm*100mm successively, the height that the impulse member that heavy 1.36kg is had to steel toe is 915mm from test coupon height freely falls, the diameter of steel toe is 28.5mm, having diameter is the shock surface that is fillet of 25mm, while falling, steel toe shock surface is the top of impact specimen vertically downward, the insulating barrier of observing sample has or not cracking.
Table 12
Finished cable to embodiment mono-to embodiment tri-carries out the test of oil resistant ageing properties, and result of the test is as table 13, experimental condition: by three long for the finished cable sample of 1.1m is placed in temperature, be that the IRM902 deep fat of 100 ± 1 ℃ soaks 4 days.Cable adopts U-shaped bending, sample two ends respectively to have 30cm to expose pasta while soaking.Immersion finishes the rear withstand voltage test of cable being carried out to AC3.5kV/5min; By cable winding, at diameter, be on the circular shaft of 9 times of sample of cable external diameters, whether range estimation visible crack and insulation peel off from conductor.
Table 13
Ethylene/vinyl acetate copolymer, referred to as EVA, can be selected the product of Nanjing zero degree plastic material Co., Ltd or Shanghai Yi Yuan Chemical Co., Ltd..
High density polyethylene (HDPE), referred to as HDPE, adopts the product that meets < < GB1116-1989 high-density polyethylene resin > > standard.
Ethylene-methacrylic acid copolymer can be selected the product of Shanghai Qia Pu Chemical Co., Ltd. or Hangzhou Guan Jia plasticizing Co., Ltd.
Crosslinking agent cumyl peroxide claims again crosslink agent DCP, can select Yantai Heng Nuo Chemical Industry Science Co., Ltd or Shanghai Fang Rui to reach chemicals Co., Ltd product.
Antioxidant β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid octadecyl ester claims again antioxidant 1076, and English name antioxidant 1076 can select the product of Yixing City angel synthetic chemistry company or Qingdao Hai Hua fire proofing Co., Ltd.
Antioxidant N, N '-bis--betanaphthyl p-phenylenediamine (PPD) claims again antioxidant DNP, can select the product of West Beijing Er Pu Science and Technology Ltd. or Guangzhou Geng Da trade Co., Ltd.
Lubricant stearic acid claims again lubricant SA, formal name used at school: octadecanoid acid, molecular formula CH3(CH2) 16COOH, carries out the standard in < < GB/T 9103-1988 industry stearic acid > >.
Fire retardant aluminium hydroxide is called again hydrated alumina, can select the product of Jinan Taixing Fine Chemicals Co., ltd.
Fire retardant red phosphorus quality standard is carried out with reference to < < GB 4947-2003 > >, can select the product of Rugao City rich and powerful fire retardant Co., Ltd.
Ultra-violet absorber 2-(the 2'-hydroxyl-3'-tert-butyl group-5'-aminomethyl phenyl)-5-chlorinated benzotriazole claims again ultraviolet absorbent uv-326, can select the product of Shanghai Yanrun Ray Machine Technology Co., Ltd. or Qingdao Hua En Chemical Co., Ltd..
The present invention is raw materials used, except above producer, all can select other satisfactory like product on market.
The foregoing is only the present invention's better possible embodiments, non-so limit to scope of patent protection of the present invention.In addition to the implementation, the present invention can also have other execution modes.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop in the protection range of requirement of the present invention.
Claims (2)
1. an offshore oil and gas engineering heat-resisting soft power cable, it is characterized in that: the periphery of zinc-plated annealing twisted copper conductors is extruded with chemical crosslinking polyolefin insulation layer and forms power cable insulation core, many described insulated wire cores are with the stranded formation cable core of stranded lay ratio dextrad of 18 ~ 20 times, the periphery of described cable core is extruded with inner sheath, the periphery of described inner sheath is coated with copper alloy silk braiding armour, the periphery of described copper alloy silk braiding armour is surrounded with waterproof band, and the periphery of described waterproof band is extruded with oversheath; Raw material components and the weight content of described chemical crosslinking polyolefin insulation layer are as follows, ethylene/vinyl acetate copolymer: 12 parts; High density polyethylene (HDPE): 6 parts; Ethylene-methacrylic acid copolymer: 2 parts; Crosslinking agent cumyl peroxide: 0.5～1 part; Antioxidant β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid octadecyl ester: 0.4～0.9 part; Antioxidant N, N '-bis--betanaphthyl p-phenylenediamine (PPD): 0.2～0.4 part; Lubricant stearic acid: 0.2～1 part; Fire retardant aluminium hydroxide: 25～30 parts; Fire retardant red phosphorus: 0.6～1 part; Ultra-violet absorber 2-(the 2'-hydroxyl-3'-tert-butyl group-5'-aminomethyl phenyl)-5-chlorinated benzotriazole: 0.05～0.1 part.
2. offshore oil and gas engineering heat-resisting soft power cable according to claim 1, is characterized in that, raw material components and the weight content of described chemical crosslinking polyolefin insulation layer are as follows, ethylene/vinyl acetate copolymer: 12 parts; High density polyethylene (HDPE): 6 parts; Ethylene-methacrylic acid copolymer: 2 parts; Crosslinking agent cumyl peroxide: 0.5 part; Antioxidant β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid octadecyl ester: 0.4 part; Antioxidant N, N '-bis--betanaphthyl p-phenylenediamine (PPD): 0.2 part; Lubricant stearic acid: 0.2 part; Fire retardant aluminium hydroxide: 25 parts; Fire retardant red phosphorus: 0.6 part; Ultra-violet absorber 2-(the 2'-hydroxyl-3'-tert-butyl group-5'-aminomethyl phenyl)-5-chlorinated benzotriazole: 0.05 part.
3. offshore oil and gas engineering heat-resisting soft power cable according to claim 1, is characterized in that, raw material components and the weight content of described chemical crosslinking polyolefin insulation layer are as follows, ethylene/vinyl acetate copolymer: 12 parts; High density polyethylene (HDPE): 6 parts; Ethylene-methacrylic acid copolymer: 2 parts; Crosslinking agent cumyl peroxide: 0.8 part; Antioxidant β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid octadecyl ester: 0.7 part; Antioxidant N, N '-bis--betanaphthyl p-phenylenediamine (PPD): 0.3 part; Lubricant stearic acid: 0.6 part; Fire retardant aluminium hydroxide: 28 parts; Fire retardant red phosphorus: 0.8 part; Ultra-violet absorber 2-(the 2'-hydroxyl-3'-tert-butyl group-5'-aminomethyl phenyl)-5-chlorinated benzotriazole: 0.08 part.
4. offshore oil and gas engineering heat-resisting soft power cable according to claim 1, is characterized in that, raw material components and the weight content of described chemical crosslinking polyolefin insulation layer are as follows, ethylene/vinyl acetate copolymer: 12 parts; High density polyethylene (HDPE): 6 parts; Ethylene-methacrylic acid copolymer: 2 parts; Crosslinking agent cumyl peroxide: 1 part; Antioxidant β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid octadecyl ester: 0.9 part; Antioxidant N, N '-bis--betanaphthyl p-phenylenediamine (PPD): 0.4 part; Lubricant stearic acid: 1 part; Fire retardant aluminium hydroxide: 30 parts; Fire retardant red phosphorus: 1 part; Ultra-violet absorber 2-(the 2'-hydroxyl-3'-tert-butyl group-5'-aminomethyl phenyl)-5-chlorinated benzotriazole: 0.1 part.
5. offshore oil and gas engineering heat-resisting soft power cable according to claim 1, it is characterized in that, raw material components and the weight content of described copper alloy silk braiding armour are as follows, copper: iron: lead: zinc=(89.0 ~ 91.0): (0.03 ~ 0.05): (0.01 ~ 0.05): 10.
6. the manufacture method of heat-resisting soft power cable for an offshore oil and gas engineering, it is characterized in that, comprise the following steps successively: the periphery in zinc-plated annealing twisted copper conductors extrudes chemical crosslinking polyolefin insulation layer formation power cable insulation core, many described insulated wire cores are with the stranded formation cable core of stranded lay ratio dextrad of 18 ~ 20 times, periphery at cable core extrudes inner sheath, periphery coated copper B alloy wire braiding armour at described inner sheath, then at described copper alloy silk, weave the wrapped waterproof band of periphery of armour, finally the periphery at described waterproof band extrudes oversheath, the preparation method of described chemical crosslinking polyolefin insulation layer is as follows: (1) prepares raw material, ethylene/vinyl acetate copolymer: 12 parts by following component and weight content, high density polyethylene (HDPE): 6 parts, ethylene-methacrylic acid copolymer: 2 parts, crosslinking agent cumyl peroxide: 0.5～1 part, antioxidant β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid octadecyl ester: 0.4～0.9 part, antioxidant N, N '-bis--betanaphthyl p-phenylenediamine (PPD): 0.2～0.4 part, lubricant stearic acid: 0.2～1 part, fire retardant aluminium hydroxide: 25～30 parts, fire retardant red phosphorus: 0.6～1 part, ultra-violet absorber 2-(the 2'-hydroxyl-3'-tert-butyl group-5'-aminomethyl phenyl)-5-chlorinated benzotriazole: 0.05～0.1 part, (2) first banbury temperature is risen to 130 ℃～150 ℃, add successively above-mentioned ethylene/vinyl acetate copolymer, high density polyethylene (HDPE) and ethylene-methacrylic acid copolymer, and plastify mixing even, then add antioxidant β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid octadecyl ester, antioxidant N, N '-bis--betanaphthyl p-phenylenediamine (PPD), ultra-violet absorber 2-(the 2'-hydroxyl-3'-tert-butyl group-5'-aminomethyl phenyl)-5-chlorinated benzotriazole, fire retardant aluminium hydroxide and fire retardant red phosphorus, and mixing evenly rear blanking, mixing roll temperature is risen to 60 ℃～70 ℃, above-mentioned compound is dropped in this mixing roll, add lubricant stearic acid and crosslinking agent cumyl peroxide mixing evenly, then glue stuff compounding is moved on three-roller open mill and beat triangle Bao Bingjing thin-pass 4～6 times, roller temperature control is at 60 ℃ ± 5 ℃, front roll temperature is higher 3～5 ℃ than rear roll temperature, cutting after thin-pass completes, cooling standby.
7. the manufacture method of heat-resisting soft power cable for offshore oil and gas engineering according to claim 6, it is characterized in that, raw material components and the weight content of described copper alloy silk braiding armour are as follows, copper: iron: lead: zinc=(89.0 ~ 91.0): (0.01 ~ 0.05): (0.01 ~ 0.05): 10.
8. according to the offshore oil and gas engineering described in claim 6 or 7, use the manufacture method of heat-resisting soft power cable, it is characterized in that, described chemical crosslinking polyolefin insulation layer adopts cold feeding manner to extrude on twin-screw rubber extruding machine, the draw ratio of screw rod is (15～25): 1, fuselage one district's temperature of twin-screw rubber extruding machine is 110 ℃ ± 5 ℃, and fuselage two district's temperature are 120 ℃ ± 5 ℃, and head temperature is 130 ℃ ± 5 ℃, mold temperature is 140 ℃ ± 5 ℃, and rubber extruding machine cooled screw mode is water cooling.
9. the manufacture method of heat-resisting soft power cable for offshore oil and gas engineering according to claim 8, it is characterized in that, when described chemical crosslinking polyolefin insulation layer is extruded on twin-screw rubber extruding machine, the line length of holding of core rod is 1:(1～1.2 with the external diameter ratio of extruding), the gap between core rod and die sleeve is 1～1.5mm; Described electro-insulating rubber enters cross-linking tube road from the head of described twin-screw rubber extruding machine is extruded, and the temperature of described crosslinked pipeline is 160 ℃～180 ℃.
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