Summary of the invention
Primary and foremost purpose of the present invention is, overcome problems of the prior art, a kind of ocean wind-powered electricity generation Salt corrosion resistance to torsion bulk shielding telecommunication cable is provided, production technology is simple, cost compared with low, external diameter is little, lightweight, soft pliable is bent, constructability is installed, and possesses resistance to torsion, sea water resistance salt air corrosion and sea water resistance wetness impregnation performance.
For realizing above object, a kind of ocean wind-powered electricity generation Salt corrosion provided by the present invention resistance to torsion bulk shielding telecommunication cable, it is characterized in that: twisted copper conductors periphery is evenly extruded with the Salt corrosion rubber insulation of resistance to torsion and forms insulated wire cores, insulated wire cores is stranded formation twisted pair wire pair between two, the right gap filling of described twisted pair wire has fire-retardant non-hygroscopic fiber to fill out core, each described twisted pair wire is to adopting different twisting pitch, many groups of described twisted pair wire strands form cable core, the periphery of described cable core is enclosed with low-intensity nonwoven fabrics and indulges covering, the periphery that covering indulged by described low-intensity nonwoven fabrics is extruded with inner sheath, the periphery of described inner sheath is surrounded with Copper Foil polyester composite band screen and copper-clad surface is inside, the inner side of described Copper Foil polyester composite band screen is provided with zinc-plated stranded copper wire drainage thread, and described zinc-plated stranded copper wire drainage thread runs through cable core overall length and together with abutting against with copper-clad surface, the periphery of described Copper Foil polyester composite band screen is extruded with oversheath.
Relative to prior art, the present invention achieves following beneficial effect: cable of the present invention adopts low-intensity nonwoven fabrics to indulge covering, the feature of vertical bag can only be that the nonwoven fabrics of one fixed width is divided into some sections, one section of parcel is connect along telecommunication cable cable core axis direction one section, it is very little at the tension force of circumferencial direction that covering indulged by low-intensity nonwoven fabrics, be easy to low-intensity nonwoven fabrics to be indulged covering when extruding inner sheath and be pressed in communication cable insulating core outer surface, namely low-intensity nonwoven fabrics indulge covering shape completely and the profile of communication cable insulating core match, eliminate low-intensity nonwoven fabrics and indulge space between covering and communication cable insulating core, flame continuous transmission is internally stoped under being convenient to burning condition, and the dipping resisting moisture can be strengthened, simultaneously low-intensity nonwoven fabrics is indulged covering and can be guaranteed adhesion between inner sheath and communication cable insulating core, does not injure communication cable insulating core when constructability process divests inner sheath.
As preferred version of the present invention, the thickness that covering indulged by described low-intensity nonwoven fabrics is 0.05 ~ 0.1mm, overlap vertical bag successively along telecommunication cable cable core axis direction, the width that covering indulged by every section of described low-intensity nonwoven fabrics is 3.5 ~ 3.8 times of telecommunication cable cable core diameter.
As preferred version of the present invention, raw material components and the weight content of the described Salt corrosion rubber insulation of resistance to torsion are as follows, ethylene propylene diene rubber Keltan5508:8 part; Ethylene propylene diene rubber DutralTER4044:12 part; Particle ethylene elastomers body rubber EP-20:5 ~ 7 part; Vulcanizing agent cumyl peroxide: 0.5 ~ 0.7 part; Co-curing agent triallylcyanurate: 0.3 ~ 0.5 part; Antiscorching agent N, a N '-penylene bismaleimides: 0.2 ~ 0.4 part; Age resistor 2,2,4-trimethyl-1,2-dihyaroquinoline condensate: 0.2 ~ 0.4 part; Age resistor 2 mercapto benzimidazole: 0.2 ~ 0.4 part; Silane coupler gamma-aminopropyl-triethoxy-silane: 0.2 ~ 0.4 part; Fire retardant hydration zinc borate: 2.1 ~ 2.5 parts; Fire retardant antimonous oxide: 1 ~ 1.5 part; Flame retardant filler aluminium hydroxide: 25 ~ 40 parts; Activator lead orthoplumbate: 0.8 ~ 1.2 part; Activator stearic acid: 0.5 ~ 1 part; Activator nano zine oxide: 1.5 ~ 2 parts; Plasticizer Sunpar2280 paraffin oil: 2 ~ 5 parts; Plasticizer chlorinated paraffin-52: 0.5 ~ 1 part; Reinforcing agent hydrated SiO 2: 1 ~ 3 part.Ethylene propylene diene rubber Keltan5508 is mixing and expressing technique performance is good, and electrical insulation properties is excellent, but cost is high, and ethylene propylene diene rubber DutralTER4044 then has excellent expressing technique performance, and cost is low, and proportion is little; Particle ethylene elastomers body rubber EP-20 is the copolymer elastomer granulated rubber of a kind of modulated ethene and alpha-olefin, its mobility is excellent, density is only 0.903g/cm3, itself and other ethylene-propylene rubber has good compatibility, the feature having reduction epoxy glue Mooney viscosity, strengthen the intensity of elastomeric compound, increase cable insulating surface smoothness, improve extrusion flowability, improve extruded velocity; Three shares the electrical insulation properties that both ensure that electro-insulating rubber, ensure that the manufacturability of rubber, apparent, extruded velocity and cost efficiency simultaneously.Adopt anti-aging agent RD and antioxidant MB to share the heat resistance that can improve vulcanizate, strengthen cable operating temperature, improve ampacity, antioxidant MB has suppression copper conductor aging action simultaneously.Due to the direct coating conductor that insulate in the present invention, the vulcanizing agent and the promoter that use sulphur and sulfur-bearing need be avoided, because adopt the vulcanized rubber heat aging property of this type of vulcanizing agent very poor, and copper is corrosive, black copper sulfide is produced on copper surface, increase the resistance of copper conductor, reduce current carrying capacities.Adopt vulcanizing agent DCP to carry out sulfuration as main vulcanizing agent and can keep the bright and clean of conductor and purity for a long time, vulcanizing agent DCP decomposes produces free radical, seizes the hydrogen atom in ethylene-propylene rubber, causes cross-linking reaction; But because vulcanizing agent DCP is under acid and reducing substances affect, produces ionic and decompose, cause the degraded of ethylene-propylene rubber, the crosslinked of ethylene-propylene rubber and fracture are occurred simultaneously, reduce curing efficiency, the crosslink density of vulcanizate is low, stretching strength and tensile strength little; Simultaneously during alone vulcanizing agent DCP, its analyte has stink.Thus have employed vulcanizing agent DCP and co-curing agent TAC and use, co-curing agent TAC has two unsaturated active functional group groups, can fast and the radical reaction that decomposites of vulcanizing agent DCP, form constitutionally stable new free radical to continue to participate in cross-linking reaction, improve the utilance of vulcanizing agent DCP and the cross-linking efficiency of ethylene-propylene rubber, suppress ethylene-propylene rubber fracture to occur.The two shares the acidity impact overcoming reinforcing agent calcinated argil, ensure that cross-linking efficiency.The peroxide vulcanizing agents such as antiscorching agent HVA-2 and vulcanizing agent DCP also use the curability significantly improving sizing material, improve thermal endurance, reduce sizing material compression set rate, reduce amount of peroxide, prevent the incipient scorch of sizing material in the course of processing, help avoid the difficult problem that copper conductor pollutes blackout simultaneously.Employing aluminium hydroxide (hydrated alumina) not only can as fire retardant, the effect of filler can be played simultaneously, do not need additionally to add filler again, can reduce costs, it contains 3 hydrones, start to decompose at 250 DEG C, discharge hydrone and absorb heat and reduce environment temperature, the steam discharged serves again the effect of combustable gas concentration in dilution gas phase, the carbide of the alundum (Al2O3) generated and the polymer surfaces of burning combines, form diaphragm, cut off the intrusion of heat energy and oxygen, served fire retardation; Hydrated alumina has low smoke performance and reduces the effect of carbon monoxide generation simultaneously, and the gas of release is steam, completely to biological nontoxic, to hardware non-corrosiveness, and environment-protecting clean.But aluminium hydroxide uses very few being difficult to reach flame retardant effect, and use and too much can cause sizing material expressing technique hydraulic performance decline, sizing material hardens, and can feed glue difficulty when extruding, insulation outward appearance is coarse.Aluminium hydroxide and antimonous oxide and hydration zinc borate is adopted to share, during burning and plasticizer chlorinated paraffin-52 generation chemical reaction generate antimony chloride, boron chloride and zinc chloride, disengage Bound moisture and produce glassy covering, play blanketing effect and dilution effect, reach flame retardant effect, good dispersion.Reinforcing agent adopts hydrated SiO 2 strengthening action excellent, effectively can increase the physical and mechanical properties of rubber, improve viscosity and the processing characteristics of ethylene-propylene rubber, but hydrated SiO 2 have water absorption, immersion electric property is poor, need carry out surface treatment overcome drawback by coupling agent.Silane resin acceptor kh-550 effectively can improve the water absorption of filler and reinforcing agent, ensure vulcanizate electrical insulation capability stable under boats and ships moist or water-immerged environment, its coupling spontaneous with hydrated SiO 2 on the one hand, its granularity of remarkable reduction, make it to be easier to fill evenly, improve the wettability of sizing material and filler and reinforcing agent, strengthen strengthening action; On the other hand in sulfidation, rubber one filler key is formed by unsaturated bond, hydrated SiO 2 is changed to hydrophobicity by hydrophily, play and increase curingprocess rate, the raising tensile strength of vulcanizate and the water-resistant stability of electrical insulation capability, eliminate vulcanizate produces pore effect when the sulfuration of jet chimney continuous high temperature.And silane resin acceptor kh-550 proportion is little, only has 0.94g/cm3, the weight alleviating cable can be conducive to.Plasticizer adopts Sunpar2280 paraffin oil and chlorinated paraffin-52 and uses, Sunpar2280 paraffin oil viscosity is high, and good with ethylene-propylene rubber intersolubility, volatility is little, the elasticity of ethylene-propylene rubber can be reduced, improve its viscosity and the harder shortcoming of the rubber that adopts aluminium hydroxide to cause as flame retardant filler; Plasticizer chlorinated paraffin-52 can promote the plasticity of sizing material on the one hand, improves production and processing technology, reacts on the other hand, realize the fire resistance of sizing material with fire retardant antimonous oxide and hydration zinc borate.Adding of nano zine oxide can accelerate curingprocess rate, improves state of cure (vulcanization); Lead orthoplumbate can improve acidproof, the water resistance of vulcanizate, and improves the heat aging property of rubber, is applicable to that the waterproof of boats and ships to cable is soaked into, Long Term Contact water environment and heat-proof aging increase ampacity and requirement in useful life.Stearic acid then possesses the effect of activator and softening plasticizer simultaneously, promotes the performance of nano zine oxide activity, makes the dispersiveness of nano zine oxide in sizing material better, evenly; But lead orthoplumbate easily makes rubber produce getting up early sulfuration, adding of stearic acid and nano zine oxide, the incipient scorch tendency of sizing material can be reduced, increase thermal stability.Electro-insulating rubber tensile strength of the present invention is greater than 5.3N/mm2, elongation at break >=250%, and ageing properties is superior, good insulation preformance; The ocean wind-powered electricity generation Salt corrosion resistance to torsion bulk shielding telecommunication cable manufacturing cost that electro-insulating rubber of the present invention is made is suitable with prior art cable, but this cable has sea water resistance salt air corrosion performance, sea water resistance moisture saturating machine and resistance to twisting property, and common cable does not then possess these performances.
As preferred version of the present invention, raw material components and the weight content of the described Salt corrosion rubber insulation of resistance to torsion are as follows, ethylene propylene diene rubber Keltan5508:8 part; Ethylene propylene diene rubber DutralTER4044:12 part; Particle ethylene elastomers body rubber EP-20:5 part; Vulcanizing agent cumyl peroxide: 0.5 part; Co-curing agent triallylcyanurate: 0.3 part; Antiscorching agent N, a N '-penylene bismaleimides: 0.2 part; Age resistor 2,2,4-trimethyl-1,2-dihyaroquinoline condensate: 0.2 part; Age resistor 2 mercapto benzimidazole: 0.2 part; Silane coupler gamma-aminopropyl-triethoxy-silane: 0.2 part; Fire retardant hydration zinc borate: 2.1 parts; Fire retardant antimonous oxide: 1 part; Flame retardant filler aluminium hydroxide: 25 parts; Activator lead orthoplumbate: 0.8 part; Activator stearic acid: 0.5 part; Activator nano zine oxide: 1.5 parts; Plasticizer Sunpar2280 paraffin oil: 2 parts; Plasticizer chlorinated paraffin-52: 0.5 part; Reinforcing agent hydrated SiO 2: 1 part.
As preferred version of the present invention, raw material components and the weight content of the described Salt corrosion rubber insulation of resistance to torsion are as follows, ethylene propylene diene rubber Keltan5508:8 part; Ethylene propylene diene rubber DutralTER4044:12 part; Particle ethylene elastomers body rubber EP-20:6 part; Vulcanizing agent cumyl peroxide: 0.6 part; Co-curing agent triallylcyanurate: 0.4 part; Antiscorching agent N, a N '-penylene bismaleimides: 0.3 part; Age resistor 2,2,4-trimethyl-1,2-dihyaroquinoline condensate: 0.3 part; Age resistor 2 mercapto benzimidazole: 0.3 part; Silane coupler gamma-aminopropyl-triethoxy-silane: 0.3 part; Fire retardant hydration zinc borate: 2.3 parts; Fire retardant antimonous oxide: 1.2 parts; Flame retardant filler aluminium hydroxide: 30 parts; Activator lead orthoplumbate: 1.0 parts; Activator stearic acid: 0.8 part; Activator nano zine oxide: 1.7 parts; Plasticizer Sunpar2280 paraffin oil: 2.5 parts; Plasticizer chlorinated paraffin-52: 0.8 part; Reinforcing agent hydrated SiO 2: 2 parts.
As preferred version of the present invention, raw material components and the weight content of the described Salt corrosion rubber insulation of resistance to torsion are as follows, ethylene propylene diene rubber Keltan5508:8 part; Ethylene propylene diene rubber DutralTER4044:12 part; Particle ethylene elastomers body rubber EP-20:7 part; Vulcanizing agent cumyl peroxide: 0.7 part; Co-curing agent triallylcyanurate: 0.5 part; Antiscorching agent N, a N '-penylene bismaleimides: 0.4 part; Age resistor 2,2,4-trimethyl-1,2-dihyaroquinoline condensate: 0.4 part; Age resistor 2 mercapto benzimidazole: 0.4 part; Silane coupler gamma-aminopropyl-triethoxy-silane: 0.4 part; Fire retardant hydration zinc borate: 2.5 parts; Fire retardant antimonous oxide: 1.5 parts; Flame retardant filler aluminium hydroxide: 40 parts; Activator lead orthoplumbate: 1.2 parts; Activator stearic acid: 1 part; Activator nano zine oxide: 2 parts; Plasticizer Sunpar2280 paraffin oil: 5 parts; Plasticizer chlorinated paraffin-52: 1 part; Reinforcing agent hydrated SiO 2: 3 parts.
Another object of the present invention is, the manufacture method of a kind of ocean wind-powered electricity generation Salt corrosion resistance to torsion bulk shielding telecommunication cable is provided, the cable manufacturing process of the method manufacture is simple, cost compared with low, external diameter is little, lightweight, soft pliable is bent, constructability is installed, and possesses resistance to torsion, sea water resistance salt air corrosion and sea water resistance wetness impregnation performance.
For realizing above object, the manufacture method of ocean wind-powered electricity generation Salt corrosion provided by the present invention resistance to torsion bulk shielding telecommunication cable, comprise the following steps successively: twisted copper conductors periphery evenly extrudes the Salt corrosion rubber insulation of resistance to torsion and forms insulated wire cores, insulated wire cores is stranded formation twisted pair wire pair between two, the right gap filling of described twisted pair wire has fire-retardant non-hygroscopic fiber to fill out core, each described twisted pair wire is to adopting different twisting pitch, many groups of described twisted pair wire strands form cable core, then covering is indulged at the periphery of described cable core parcel low-intensity nonwoven fabrics, finally extrude inner sheath in the periphery that covering indulged by described low-intensity nonwoven fabrics, at the periphery of described inner sheath wrapped Copper Foil polyester composite band screen and copper-clad surface is inside, the inner side of described Copper Foil polyester composite band screen is provided with zinc-plated stranded copper wire drainage thread, described zinc-plated stranded copper wire drainage thread runs through cable core overall length and together with abutting against with copper-clad surface, finally extrude oversheath in the periphery of described Copper Foil polyester composite band screen, the preparation method of the described Salt corrosion rubber insulation of resistance to torsion is as follows: (1) prepares raw material, ethylene propylene diene rubber Keltan5508:8 part by following component and weight content, ethylene propylene diene rubber DutralTER4044:12 part, particle ethylene elastomers body rubber EP-20:5 ~ 7 part, vulcanizing agent cumyl peroxide: 0.5 ~ 0.7 part, co-curing agent triallylcyanurate: 0.3 ~ 0.5 part, antiscorching agent N, a N '-penylene bismaleimides: 0.2 ~ 0.4 part, age resistor 2,2,4-trimethyl-1,2-dihyaroquinoline condensate: 0.2 ~ 0.4 part, age resistor 2 mercapto benzimidazole: 0.2 ~ 0.4 part, silane coupler gamma-aminopropyl-triethoxy-silane: 0.2 ~ 0.4 part, fire retardant hydration zinc borate: 2.1 ~ 2.5 parts, fire retardant antimonous oxide: 1 ~ 1.5 part, flame retardant filler aluminium hydroxide: 25 ~ 40 parts, activator lead orthoplumbate: 0.8 ~ 1.2 part, activator stearic acid: 0.5 ~ 1 part, activator nano zine oxide: 1.5 ~ 2 parts, plasticizer Sunpar2280 paraffin oil: 2 ~ 5 parts, plasticizer chlorinated paraffin-52: 0.5 ~ 1 part, reinforcing agent hydrated SiO 2: 1 ~ 3 part, (2) first banbury temperature is risen to 160 ~ 180 DEG C, then ethylene propylene diene rubber Keltan5508 is added, ethylene propylene diene rubber DutralTER4044 and mixing 1.5 ~ 2 minutes of particle ethylene elastomers body rubber EP-20, add above-mentioned flame retardant filler aluminium hydroxide more successively, activator lead orthoplumbate, activator nano zine oxide, antiscorching agent N, a N '-penylene bismaleimides, reinforcing agent hydrated SiO 2, silane coupler gamma-aminopropyl-triethoxy-silane, plasticizer Sunpar2280 paraffin oil, plasticizer chlorinated paraffin-52, fire retardant hydration zinc borate, fire retardant antimonous oxide, activator stearic acid, age resistor 2, 2, 4-trimethyl-1, 2-dihyaroquinoline condensate and age resistor 2 mercapto benzimidazole, carry out discharging after mixing 7 ~ 8 minutes, dry in the air in the space of dried and clean and put more than 24 hours, sizing material being knocked down temperature is on the banbury of 80 ~ 100 DEG C mixing 2 ~ 3 minutes again, and in the end 30 seconds add vulcanizing agent cumyl peroxide and co-curing agent triallylcyanurate, three-roller open mill in mixing materials is carried out thin-pass, the roll spacing of three-roller open mill is 1.5 ~ 2mm, and after playing triangle bag and just wrapping each four times, slice is for subsequent use.
Relative to prior art, the present invention achieves following beneficial effect: the cable of method manufacture of the present invention adopts low-intensity nonwoven fabrics to indulge covering, the feature of vertical bag can only be that the nonwoven fabrics of one fixed width is divided into some sections, one section of parcel is connect along telecommunication cable cable core axis direction one section, it is very little at the tension force of circumferencial direction that covering indulged by low-intensity nonwoven fabrics, be easy to low-intensity nonwoven fabrics to be indulged covering when extruding inner sheath and be pressed in communication cable insulating core outer surface, namely low-intensity nonwoven fabrics indulge covering shape completely and the profile of communication cable insulating core match, eliminate low-intensity nonwoven fabrics and indulge space between covering and communication cable insulating core, flame continuous transmission is internally stoped under being convenient to burning condition, and the dipping resisting moisture can be strengthened, simultaneously low-intensity nonwoven fabrics is indulged covering and can be guaranteed adhesion between inner sheath and communication cable insulating core, does not injure communication cable insulating core when constructability process divests inner sheath.Ethylene propylene diene rubber Keltan5508 is mixing and expressing technique performance is good, and electrical insulation properties is excellent, but cost is high, and ethylene propylene diene rubber DutralTER4044 then has excellent expressing technique performance, and cost is low, and proportion is little; Particle ethylene elastomers body rubber EP-20 is the copolymer elastomer granulated rubber of a kind of modulated ethene and alpha-olefin, its mobility is excellent, density is only 0.903g/cm3, itself and other ethylene-propylene rubber has good compatibility, the feature having reduction epoxy glue Mooney viscosity, strengthen the intensity of elastomeric compound, increase cable insulating surface smoothness, improve extrusion flowability, improve extruded velocity; Three shares the electrical insulation properties that both ensure that electro-insulating rubber, ensure that the manufacturability of rubber, apparent, extruded velocity and cost efficiency simultaneously.Adopt anti-aging agent RD and antioxidant MB to share the heat resistance that can improve vulcanizate, strengthen cable operating temperature, improve ampacity, antioxidant MB has suppression copper conductor aging action simultaneously.Due to the direct coating conductor that insulate in the present invention, the vulcanizing agent and the promoter that use sulphur and sulfur-bearing need be avoided, because adopt the vulcanized rubber heat aging property of this type of vulcanizing agent very poor, and copper is corrosive, black copper sulfide is produced on copper surface, increase the resistance of copper conductor, reduce current carrying capacities.Adopt vulcanizing agent DCP to carry out sulfuration as main vulcanizing agent and can keep the bright and clean of conductor and purity for a long time, vulcanizing agent DCP decomposes produces free radical, seizes the hydrogen atom in ethylene-propylene rubber, causes cross-linking reaction; But because vulcanizing agent DCP is under acid and reducing substances affect, produces ionic and decompose, cause the degraded of ethylene-propylene rubber, the crosslinked of ethylene-propylene rubber and fracture are occurred simultaneously, reduce curing efficiency, the crosslink density of vulcanizate is low, stretching strength and tensile strength little; Simultaneously during alone vulcanizing agent DCP, its analyte has stink.Thus have employed vulcanizing agent DCP and co-curing agent TAC and use, co-curing agent TAC has two unsaturated active functional group groups, can fast and the radical reaction that decomposites of vulcanizing agent DCP, form constitutionally stable new free radical to continue to participate in cross-linking reaction, improve the utilance of vulcanizing agent DCP and the cross-linking efficiency of ethylene-propylene rubber, suppress ethylene-propylene rubber fracture to occur.The two shares the acidity impact overcoming reinforcing agent calcinated argil, ensure that cross-linking efficiency.The peroxide vulcanizing agents such as antiscorching agent HVA-2 and vulcanizing agent DCP also use the curability significantly improving sizing material, improve thermal endurance, reduce sizing material compression set rate, reduce amount of peroxide, prevent the incipient scorch of sizing material in the course of processing, help avoid the difficult problem that copper conductor pollutes blackout simultaneously.Employing aluminium hydroxide (hydrated alumina) not only can as fire retardant, the effect of filler can be played simultaneously, do not need additionally to add filler again, can reduce costs, it contains 3 hydrones, start to decompose at 250 DEG C, discharge hydrone and absorb heat and reduce environment temperature, the steam discharged serves again the effect of combustable gas concentration in dilution gas phase, the carbide of the alundum (Al2O3) generated and the polymer surfaces of burning combines, form diaphragm, cut off the intrusion of heat energy and oxygen, served fire retardation; Hydrated alumina has low smoke performance and reduces the effect of carbon monoxide generation simultaneously, and the gas of release is steam, completely to biological nontoxic, to hardware non-corrosiveness, and environment-protecting clean.But aluminium hydroxide uses very few being difficult to reach flame retardant effect, and use and too much can cause sizing material expressing technique hydraulic performance decline, sizing material hardens, and can feed glue difficulty when extruding, insulation outward appearance is coarse.Aluminium hydroxide and antimonous oxide and hydration zinc borate is adopted to share, during burning and plasticizer chlorinated paraffin-52 generation chemical reaction generate antimony chloride, boron chloride and zinc chloride, disengage Bound moisture and produce glassy covering, play blanketing effect and dilution effect, reach flame retardant effect, good dispersion.Reinforcing agent adopts hydrated SiO 2 strengthening action excellent, effectively can increase the physical and mechanical properties of rubber, improve viscosity and the processing characteristics of ethylene-propylene rubber, but hydrated SiO 2 have water absorption, immersion electric property is poor, need carry out surface treatment overcome drawback by coupling agent.Silane resin acceptor kh-550 effectively can improve the water absorption of filler and reinforcing agent, ensure vulcanizate electrical insulation capability stable under boats and ships moist or water-immerged environment, its coupling spontaneous with hydrated SiO 2 on the one hand, its granularity of remarkable reduction, make it to be easier to fill evenly, improve the wettability of sizing material and filler and reinforcing agent, strengthen strengthening action; On the other hand in sulfidation, rubber one filler key is formed by unsaturated bond, hydrated SiO 2 is changed to hydrophobicity by hydrophily, play and increase curingprocess rate, the raising tensile strength of vulcanizate and the water-resistant stability of electrical insulation capability, eliminate vulcanizate produces pore effect when the sulfuration of jet chimney continuous high temperature.And silane resin acceptor kh-550 proportion is little, only has 0.94g/cm3, the weight alleviating cable can be conducive to.Plasticizer adopts Sunpar2280 paraffin oil and chlorinated paraffin-52 and uses, Sunpar2280 paraffin oil viscosity is high, and good with ethylene-propylene rubber intersolubility, volatility is little, the elasticity of ethylene-propylene rubber can be reduced, improve its viscosity and the harder shortcoming of the rubber that adopts aluminium hydroxide to cause as flame retardant filler; Plasticizer chlorinated paraffin-52 can promote the plasticity of sizing material on the one hand, improves production and processing technology, reacts on the other hand, realize the fire resistance of sizing material with fire retardant antimonous oxide and hydration zinc borate.Adding of nano zine oxide can accelerate curingprocess rate, improves state of cure (vulcanization); Lead orthoplumbate can improve acidproof, the water resistance of vulcanizate, and improves the heat aging property of rubber, is applicable to that the waterproof of boats and ships to cable is soaked into, Long Term Contact water environment and heat-proof aging increase ampacity and requirement in useful life.Stearic acid then possesses the effect of activator and softening plasticizer simultaneously, promotes the performance of nano zine oxide activity, makes the dispersiveness of nano zine oxide in sizing material better, evenly; But lead orthoplumbate easily makes rubber produce getting up early sulfuration, adding of stearic acid and nano zine oxide, the incipient scorch tendency of sizing material can be reduced, increase thermal stability.Electro-insulating rubber tensile strength of the present invention is greater than 5.3N/mm2, elongation at break >=250%, and ageing properties is superior, good insulation preformance; The ocean wind-powered electricity generation Salt corrosion resistance to torsion bulk shielding telecommunication cable manufacturing cost that electro-insulating rubber of the present invention is made is suitable with prior art cable, but this cable has sea water resistance salt air corrosion performance, sea water resistance moisture saturating machine and resistance to twisting property, and common cable does not then possess these performances.
As preferred version of the present invention, when described electro-insulating rubber is extruded, rubber extruding machine adopts cold feeding manner, the draw ratio of rubber extruding machine screw rod is (15 ~ 20): 1, body temperature is 55 DEG C ~ 65 DEG C, head temperature 90 DEG C ~ 100 DEG C, mold temperature is 120 DEG C ~ 130 DEG C, and rubber extruding machine cooled screw mode is water cooling, it is 1:(1 ~ 1.2 that the core rod of extrusion die holds line length with the ratio extruding external diameter), the length of die sleeve sizing section is 2 ~ 4mm.
As preferred version of the present invention, the thickness that covering indulged by described low-intensity nonwoven fabrics is 0.05 ~ 0.1mm, overlap vertical bag successively along telecommunication cable cable core axis direction, the width that covering indulged by every section of described low-intensity nonwoven fabrics is 3.5 ~ 3.8 times of telecommunication cable cable core diameter.
Embodiment
Embodiment one
As shown in Figure 1, ocean wind-powered electricity generation Salt corrosion of the present invention resistance to torsion bulk shielding telecommunication cable, comprise the following steps successively: twisted copper conductors 1a periphery evenly extrudes the Salt corrosion rubber insulation of resistance to torsion 1b and forms insulated wire cores 1, insulated wire cores 1 is stranded formation twisted pair wire pair between two, the right gap filling of twisted pair wire has fire-retardant non-hygroscopic fiber to fill out core 2, each twisted pair wire is to adopting different twisting pitch, many groups twisted pair wire strand forms cable core, then covering 3 is indulged at the periphery of cable core parcel low-intensity nonwoven fabrics, the periphery of finally indulging covering 3 at low-intensity nonwoven fabrics extrudes inner sheath 4, low-intensity nonwoven fabrics is indulged covering 3 squeezed tight in insulated wire cores 1 by inner sheath 4, at the periphery of inner sheath 4 wrapped Copper Foil polyester composite band screen 5 and copper-clad surface is inside, the inner side of Copper Foil polyester composite band screen 5 is provided with zinc-plated stranded copper wire drainage thread 5a, zinc-plated stranded copper wire drainage thread 5a runs through cable core overall length and together with abutting against with copper-clad surface, finally extrude oversheath 6 in the periphery of Copper Foil polyester composite band screen 5.The thickness that covering 3 indulged by low-intensity nonwoven fabrics is 0.05mm, overlaps vertical bag successively along telecommunication cable cable core axis direction, and the width that covering indulged by every section of low-intensity nonwoven fabrics is 3.5 times of telecommunication cable cable core diameter.Inner sheath 4 adopts oxygen index to be not less than the flexibility high flame retardant inner sheath material of 32.
Wherein, the preparation process of the Salt corrosion rubber insulation of resistance to torsion electro-insulating rubber used is as follows: (1) prepares raw material, ethylene propylene diene rubber Keltan5508:8 part by following component and weight content; Ethylene propylene diene rubber DutralTER4044:12 part; Particle ethylene elastomers body rubber EP-20:5 part; Vulcanizing agent cumyl peroxide (vulcanizing agent DCP): 0.5 part; Co-curing agent triallylcyanurate (co-curing agent TAC): 0.3 part; Antiscorching agent N, N '-penylene bismaleimides (antiscorching agent HVA-2): 0.2 part; Age resistor 2,2,4-trimethyl-1,2-dihyaroquinoline condensate (anti-aging agent RD): 0.2 part; Age resistor 2 mercapto benzimidazole (antioxidant MB): 0.2 part; Silane coupler gamma-aminopropyl-triethoxy-silane (silane resin acceptor kh-550): 0.2 part; Fire retardant hydration zinc borate: 2.1 parts; Fire retardant antimonous oxide: 1 part; Flame retardant filler aluminium hydroxide (Al
2o
33H
2o hydrated alumina): 25 parts; Activator lead orthoplumbate: 0.8 part; Activator stearic acid: 0.5 part; Activator nano zine oxide: 1.5 parts; Plasticizer Sunpar2280 paraffin oil: 2 parts; Plasticizer chlorinated paraffin-52: 0.5 part; Reinforcing agent hydrated SiO 2: 1 part.
(2) first banbury temperature is risen to 160 DEG C, then ethylene propylene diene rubber Keltan5508 is added, ethylene propylene diene rubber DutralTER4044 and mixing 1.5 minutes of particle ethylene elastomers body rubber EP-20, add above-mentioned flame retardant filler aluminium hydroxide more successively, activator lead orthoplumbate, activator nano zine oxide, antiscorching agent N, a N '-penylene bismaleimides, reinforcing agent hydrated SiO 2, silane coupler gamma-aminopropyl-triethoxy-silane, plasticizer Sunpar2280 paraffin oil, plasticizer chlorinated paraffin-52, fire retardant hydration zinc borate, fire retardant antimonous oxide, activator stearic acid, age resistor 2, 2, 4-trimethyl-1, 2-dihyaroquinoline condensate and age resistor 2 mercapto benzimidazole, carry out discharging after mixing 7 minutes, dry in the air in the space of dried and clean and put more than 24 hours, sizing material being knocked down temperature is on the banbury of 80 DEG C mixing 2 minutes again, and in the end 30 seconds add vulcanizing agent cumyl peroxide and co-curing agent triallylcyanurate, three-roller open mill in mixing materials is carried out thin-pass, the roll spacing of three-roller open mill is 1.5mm, and after playing triangle bag and just wrapping each four times, slice is for subsequent use.
When described electro-insulating rubber is extruded, rubber extruding machine adopts cold feeding manner, screw slenderness ratio is 15:1, body temperature is 55 DEG C, head temperature 90 DEG C, mold temperature is 120 DEG C, rubber extruding machine cooled screw mode is water cooling, and it is 1:1 that the core rod of extrusion die holds line length with the ratio extruding external diameter, and the length of die sleeve sizing section is 2mm.
Embodiment two
As shown in Figure 1, ocean wind-powered electricity generation Salt corrosion of the present invention resistance to torsion bulk shielding telecommunication cable, comprise the following steps successively: twisted copper conductors 1a periphery evenly extrudes the Salt corrosion rubber insulation of resistance to torsion 1b and forms insulated wire cores 1, insulated wire cores 1 is stranded formation twisted pair wire pair between two, the right gap filling of twisted pair wire has fire-retardant non-hygroscopic fiber to fill out core 2, each twisted pair wire is to adopting different twisting pitch, many groups twisted pair wire strand forms cable core, then covering 3 is indulged at the periphery of cable core parcel low-intensity nonwoven fabrics, the periphery of finally indulging covering 3 at low-intensity nonwoven fabrics extrudes inner sheath 4, low-intensity nonwoven fabrics is indulged covering 3 squeezed tight in insulated wire cores 1 by inner sheath 4, at the periphery of inner sheath 4 wrapped Copper Foil polyester composite band screen 5 and copper-clad surface is inside, the inner side of Copper Foil polyester composite band screen 5 is provided with zinc-plated stranded copper wire drainage thread 5a, zinc-plated stranded copper wire drainage thread 5a runs through cable core overall length and together with abutting against with copper-clad surface, finally extrude oversheath 6 in the periphery of Copper Foil polyester composite band screen 5.The thickness that covering 3 indulged by low-intensity nonwoven fabrics is 0.08mm, overlaps vertical bag successively along telecommunication cable cable core axis direction, and the width that covering indulged by every section of low-intensity nonwoven fabrics is 3.7 times of telecommunication cable cable core diameter.Inner sheath 4 adopts oxygen index to be not less than the flexibility high flame retardant inner sheath material of 32.
Wherein, the preparation process of the Salt corrosion rubber insulation of resistance to torsion electro-insulating rubber used is as follows: (1) prepares raw material, ethylene propylene diene rubber Keltan5508:8 part by following component and weight content; Ethylene propylene diene rubber DutralTER4044:12 part; Particle ethylene elastomers body rubber EP-20:6 part; Vulcanizing agent cumyl peroxide: 0.6 part; Co-curing agent triallylcyanurate: 0.4 part; Antiscorching agent N, a N '-penylene bismaleimides: 0.3 part; Age resistor 2,2,4-trimethyl-1,2-dihyaroquinoline condensate: 0.3 part; Age resistor 2 mercapto benzimidazole: 0.3 part; Silane coupler gamma-aminopropyl-triethoxy-silane: 0.3 part; Fire retardant hydration zinc borate: 2.3 parts; Fire retardant antimonous oxide: 1.2 parts; Flame retardant filler aluminium hydroxide: 30 parts; Activator lead orthoplumbate: 1.0 parts; Activator stearic acid: 0.8 part; Activator nano zine oxide: 1.7 parts; Plasticizer Sunpar2280 paraffin oil: 2.5 parts; Plasticizer chlorinated paraffin-52: 0.8 part; Reinforcing agent hydrated SiO 2: 2 parts.
(2) first banbury temperature is risen to 170 DEG C, then ethylene propylene diene rubber Keltan5508 is added, ethylene propylene diene rubber DutralTER4044 and mixing 1.8 minutes of particle ethylene elastomers body rubber EP-20, add above-mentioned flame retardant filler aluminium hydroxide more successively, activator lead orthoplumbate, activator nano zine oxide, antiscorching agent N, a N '-penylene bismaleimides, reinforcing agent hydrated SiO 2, silane coupler gamma-aminopropyl-triethoxy-silane, plasticizer Sunpar2280 paraffin oil, plasticizer chlorinated paraffin-52, fire retardant hydration zinc borate, fire retardant antimonous oxide, activator stearic acid, age resistor 2, 2, 4-trimethyl-1, 2-dihyaroquinoline condensate and age resistor 2 mercapto benzimidazole, carry out discharging after mixing 7.5 minutes, dry in the air in the space of dried and clean and put more than 24 hours, sizing material being knocked down temperature is on the banbury of 90 DEG C mixing 2.5 minutes again, and in the end 30 seconds add vulcanizing agent cumyl peroxide and co-curing agent triallylcyanurate, three-roller open mill in mixing materials is carried out thin-pass, the roll spacing of three-roller open mill is 1.8mm, and after playing triangle bag and just wrapping each four times, slice is for subsequent use.
When described electro-insulating rubber is extruded, rubber extruding machine adopts cold feeding manner, screw slenderness ratio is 18:1, body temperature is 60 DEG C, head temperature 95 DEG C, mold temperature is 125 DEG C, rubber extruding machine cooled screw mode is water cooling, and it is 1:1.1 that the core rod of extrusion die holds line length with the ratio extruding external diameter, and the length of die sleeve sizing section is 3mm.
Embodiment three
As shown in Figure 1, ocean wind-powered electricity generation Salt corrosion of the present invention resistance to torsion bulk shielding telecommunication cable, comprise the following steps successively: twisted copper conductors 1a periphery evenly extrudes the Salt corrosion rubber insulation of resistance to torsion 1b and forms insulated wire cores 1, insulated wire cores 1 is stranded formation twisted pair wire pair between two, the right gap filling of twisted pair wire has fire-retardant non-hygroscopic fiber to fill out core 2, each twisted pair wire is to adopting different twisting pitch, many groups twisted pair wire strand forms cable core, then covering 3 is indulged at the periphery of cable core parcel low-intensity nonwoven fabrics, the periphery of finally indulging covering 3 at low-intensity nonwoven fabrics extrudes inner sheath 4, low-intensity nonwoven fabrics is indulged covering 3 squeezed tight in insulated wire cores 1 by inner sheath 4, at the periphery of inner sheath 4 wrapped Copper Foil polyester composite band screen 5 and copper-clad surface is inside, the inner side of Copper Foil polyester composite band screen 5 is provided with zinc-plated stranded copper wire drainage thread 5a, zinc-plated stranded copper wire drainage thread 5a runs through cable core overall length and together with abutting against with copper-clad surface, finally extrude oversheath 6 in the periphery of Copper Foil polyester composite band screen 5.The thickness that covering 3 indulged by low-intensity nonwoven fabrics is 0.1mm, overlaps vertical bag successively along telecommunication cable cable core axis direction, and the width that covering indulged by every section of low-intensity nonwoven fabrics is 3.8 times of telecommunication cable cable core diameter.Inner sheath 4 adopts oxygen index to be not less than the flexibility high flame retardant inner sheath material of 32.
Wherein, the preparation process of the Salt corrosion rubber insulation of resistance to torsion electro-insulating rubber used is as follows: (1) prepares raw material, ethylene propylene diene rubber Keltan5508:8 part by following component and weight content; Ethylene propylene diene rubber DutralTER4044:12 part; Particle ethylene elastomers body rubber EP-20:7 part; Vulcanizing agent cumyl peroxide: 0.7 part; Co-curing agent triallylcyanurate: 0.5 part; Antiscorching agent N, a N '-penylene bismaleimides: 0.4 part; Age resistor 2,2,4-trimethyl-1,2-dihyaroquinoline condensate: 0.4 part; Age resistor 2 mercapto benzimidazole: 0.4 part; Silane coupler gamma-aminopropyl-triethoxy-silane: 0.4 part; Fire retardant hydration zinc borate: 2.5 parts; Fire retardant antimonous oxide: 1.5 parts; Flame retardant filler aluminium hydroxide: 40 parts; Activator lead orthoplumbate: 1.2 parts; Activator stearic acid: 1 part; Activator nano zine oxide: 2 parts; Plasticizer Sunpar2280 paraffin oil: 5 parts; Plasticizer chlorinated paraffin-52: 1 part; Reinforcing agent hydrated SiO 2: 3 parts.
(2) first banbury temperature is risen to 180 DEG C, then ethylene propylene diene rubber Keltan5508 is added, ethylene propylene diene rubber DutralTER4044 and mixing 2 minutes of particle ethylene elastomers body rubber EP-20, add above-mentioned flame retardant filler aluminium hydroxide more successively, activator lead orthoplumbate, activator nano zine oxide, antiscorching agent N, a N '-penylene bismaleimides, reinforcing agent hydrated SiO 2, silane coupler gamma-aminopropyl-triethoxy-silane, plasticizer Sunpar2280 paraffin oil, plasticizer chlorinated paraffin-52, fire retardant hydration zinc borate, fire retardant antimonous oxide, activator stearic acid, age resistor 2, 2, 4-trimethyl-1, 2-dihyaroquinoline condensate and age resistor 2 mercapto benzimidazole, carry out discharging after mixing 8 minutes, dry in the air in the space of dried and clean and put more than 24 hours, sizing material being knocked down temperature is on the banbury of 100 DEG C mixing 3 minutes again, and in the end 30 seconds add vulcanizing agent cumyl peroxide and co-curing agent triallylcyanurate, three-roller open mill in mixing materials is carried out thin-pass, the roll spacing of three-roller open mill is 2mm, and after playing triangle bag and just wrapping each four times, slice is for subsequent use.
When described electro-insulating rubber is extruded, rubber extruding machine adopts cold feeding manner, screw slenderness ratio is 20:1, body temperature is 65 DEG C, head temperature 100 DEG C, mold temperature is 130 DEG C, rubber extruding machine cooled screw mode is water cooling, and it is 1:1.2 that the core rod of extrusion die holds line length with the ratio extruding external diameter, and the length of die sleeve sizing section is 4mm.
To the aging front measuring mechanical property result of electro-insulating rubber in embodiment one to embodiment three as table 1:
Table 1
To the measuring mechanical property result after electro-insulating rubber oven ageing in embodiment one to embodiment three as table 2, aging condition: temperature 135 ± 2 DEG C, time: 168h.
Table 2
To the measuring mechanical property result after electro-insulating rubber air bomb aging in embodiment one to embodiment three as table 3, aging condition: temperature 127 ± 1 DEG C, time 40h, pressure 56N/mm2.
Table 3
As shown in table 4 to insulation resistance (the when 20 DEG C) test result of electro-insulating rubber in embodiment one to embodiment three.
Table 4
|
Unit |
Standard-required |
Embodiment one |
Embodiment two |
Embodiment three |
Insulation resistance (20 DEG C) |
MΩ·km |
≥3670 |
11650 |
10200 |
12040 |
After immersing 50 DEG C of water to electro-insulating rubber in embodiment one to embodiment three, ac capacitor increment rate test result is as table 5.The numerical value recorded in table be respectively the 14th day with the difference of the 1st day, the 7th day.
Table 5
The test of sea water resistance salt air corrosion performance, sea water resistance moisture saturating machine and resistance to twisting property is carried out to the finished cable that electro-insulating rubber in embodiment one to embodiment three is made.
Finished cable sea water resistance salt air corrosion performance requires: three long finished cable samples for 1.1m to be placed in temperature be saliferous (NaCl) mass concentration of 30 ± 1 DEG C be 20% solution soak 40 days.Cable adopts U-shaped bending when soaking, sample two ends respectively have 30cm to surface; Soak and terminate the withstand voltage test of rear cable by AC7kV/5min; By cable winding at diameter be 9 times of sample of cable external diameters circular shaft on, require that insulating surface is without range estimation visible crack, and insulate in above process not from cable generation stripping situation.
Finished cable sea water resistance moisture saturating machine requires: cable being placed in temperature is that the water of 75 DEG C soaks the dielectric constant insulated afterwards for 1 day and is not more than 6, the ac capacitor gaining rate soaked between the 14th day end and the 1st day end is not more than 5, the ac capacitor gaining rate soaked between the 14th day end and the 7th day end is not more than 3, the stability factor of soaking after 14 is not more than 1, soaks insulation resistance constant after 84 days and requires to be not less than 3670M Ω Km.
The resistance to twisting property of finished cable requires: under-40 DEG C of low temperature, finished cable is according to reversing 360 ° clockwise, then nature is returned to, another mistake hour hands reverse identical angle, returning to nature subsequently is again one-period, regulation carries out the test in 11000 cycles, and reverse speed is 720 ° ~ 1080 °/min.The thermal cycling test carrying out 8 hours electrified regulation therebetween simultaneously and naturally cool for 16 hours, during energising, makes conductor temperature be stabilized in cable maximum operating temperature, carries out 14 thermal cycling tests altogether.Require after end that cable appearance does not chap, insulation resistance meets the requirement of IEC60092-351.
The sea water resistance salt air corrosion performance of the finished cable make electro-insulating rubber in embodiment one to embodiment three and prior art ethylene propylene rubber insulated cable, sea water resistance moisture saturating machine and resistance to twisting property are tested by above-mentioned requirements, and result of the test compares as table 6.
Table 6
In embodiment one to embodiment three, ethylene propylene diene rubber Keltan5508 selects the product of Dutch DSM N. V.; Ethylene propylene diene rubber DutralTER4044 selects the product of Italian ENI company; Particle ethylene elastomers body rubber EP-20 adopts the WanFlowTM particle ethylene elastomers body rubber EP-20 of the production of Shanghai Chi Cheng chemical industry Trade Co., Ltd.; Vulcanizing agent cumyl peroxide (vulcanizing agent DCP) can select Yantai Heng Nuo Chemical Industry Science Co., Ltd or Shanghai Fang Rui to reach Chemical Company's product; Co-curing agent triallylcyanurate (co-curing agent TAC) can select Yantai Heng Nuo Chemical Industry Science Co., Ltd or Shanghai Fang Rui to reach Chemical Company's product; Antiscorching agent N, N '-penylene bismaleimides (antiscorching agent HVA-2) can select the product of the bright Chemical Co., Ltd. of emerging Hua Da of Taizhou Huangyan East Sea Chemical Co., Ltd. or Changzhou; Age resistor 2 mercapto benzimidazole (antioxidant MB) can select Shanghai rubber chemicals Co., Ltd., Factory or Qingdao Te Nuo commerce and trade Co., Ltd product; Age resistor 2,2,4-trimethyl-1,2-dihyaroquinoline condensate (anti-aging agent RD) can select the product of Jiangsu Hai'an Petrochemical Plant or NanJing Youhao Chemical Auxiliary Agent Co., Ltd.; Silane coupler gamma-aminopropyl-triethoxy-silane (silane resin acceptor kh-550) can select the product of Nanjing Chang Hu Chemical Co., Ltd. or Jiangsu Chenguang Coincident Dose Co., Ltd.; Fire retardant hydration zinc borate can select the product of Shandong Bo Ao Industrial Co., Ltd.; Fire retardant antimonous oxide can select the product of Yiyang mayor Tang Ti industry Co., Ltd or star antimony industry Co., Ltd of Loudi, Hunan China; Flame retardant filler aluminium hydroxide (Al
2o
33H
2o hydrated alumina) product of Shijiazhuang Xin Yuan chemical industry Co., Ltd or Hong Taiji Industrial Co., Ltd. of Shenzhen can be selected; Activator lead orthoplumbate can select the product of Xinxiang Yang Yuan chemical industry Co., Ltd or Guangzhou Hao Hua Chemical Co., Ltd.; Activator stearic acid can select the product of Shanghai Xu Ya Industrial Co., Ltd. or Shanghai Hong Chang Chemical Co., Ltd.; The particle diameter of activator nano zine oxide, between 1-100 nanometer, can select the product of zincaluminite Chemical Co., Ltd. of Qinyang City or Zhuzhou Zhongle Chemical Industry Co., Ltd.; Plasticizer Sunpar2280 paraffin oil selects NATROCHEM company of the U.S. or HollyRefining & Marketing – Tulsa, the product of LLC company; Plasticizer chlorinated paraffin-52 can select the product of Shanghai Dong Lei petrochemical industry Co., Ltd or Jiangxi, Lvshunkou District, Daliang City chemical engineering industry parent company.Reinforcing agent hydrated SiO 2 can select the product of Guangzhou Science and Technology Ji Sheng Industrial Co or Taicang Xin Hong 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 better possible embodiments of the present invention, non-ly therefore 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 application claims.