CN104851497A - Three-layer concentric high-performance fiber composite material cable core rod and manufacturing method thereof - Google Patents
Three-layer concentric high-performance fiber composite material cable core rod and manufacturing method thereof Download PDFInfo
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Abstract
The invention discloses a three-layer concentric high-performance fiber composite material cable core rod and a manufacturing method thereof. The internal layer of the core rod is made of carbon fiber composite material, the intermediate layer is made of glass fiber composite material, and the external layer is made of aramid fiber composite material so that a concentric structure is formed by the three layers. The invention also discloses a manufacturing method of the core rod. Carbon fiber, glass fiber and aramid fiber are infiltrated in liquid resin in an open glue tank; carbon fiber composite material preformed core rod is firstly formed by the impregnated carbon fiber; the impregnated glass fiber evenly wraps the carbon fiber composite material preformed core rod so that a two-layer concentric structured carbon fiber/glass fiber composite material preformed core rod is formed; and aramid fiber through impregnation and online ultrasound processing evenly wraps the carbon fiber/glass fiber composite material preformed core rod so that a three-layer concentric structured carbon fiber/glass fiber/aramid fiber composite material core rod is obtained, and thus the core rod is enabled to possess the characteristics of high strength, high toughness, high insulation, low density and high tensile modulus.
Description
Technical field
The present invention relates to aerial cable field, be specifically related to three layers of concentrically ringed high performance composites cable plug and manufacture method.
Background technology
Using carbon fiber enhancement resin base composite material as having strengthened the wire (abbreviation carbon fiber composite core wire) of plug since U.S. CTC Developed in 2003, be applied to aerial high-voltage distribution system circuit more and more.Carbon fiber enhancement resin base composite core, compared with traditional steel core, has more high tensile, less dense, corrosion-resistant rustless feature.Therefore carbon fiber composite core wire can adopt soft aluminium as carrying object, has higher conductance, and then reduces conductor resistance loss, and composite core is conducted electricity hardly simultaneously, there is not traditional steel core magnetic hysteresis loss and thermal effect.Carbon fiber composite core wire can also reduce the sag of aerial cable, increases pylon distance.
But the problems that existing carbon fiber composite core wire manufacturing technology exists constrain it and apply.Except production cost is high, except complex process, modulus of carbon fibres is high, and hardness is large, and elongation at break is low, and its composite material is hard and crisp, causes the pliability of carbon fiber composite core rod low, and drum winding easily ftractures or fractures.In addition, carbon fiber has certain conductivity, this concerning its as high voltage overhead cable reinforcing core rod main composition material be a kind of defect, the insulating properties of carbon fiber composite core rod should be improved as far as possible.
What have introduces glass fibre in composite material plug, allow glass fiber compound material as the external insulation of composite material plug, although improve the insulating properties of plug, but the density of glass fibre higher (than carbon fiber height about 50%), add the weight of composite material plug, thus add the sag degree of aerial cable.And the composite material plug rigidity of this two-layer concentric structure is high, poor toughness, coil online around time easily ftracture or fracture.In sum, on carbon fiber composite core rod, merely add fiberglass insulation not a kind of desirable solution.
Therefore, develop a kind of novel composite material plug, make its high strength both having retained carbon fiber composite material core layer and high-modulus, there is again high layer structure insulating properties, also there is fracture elongation and the intensity of high outermost layer structure, reduce the density of composite material plug simultaneously, there is important construction value.
The hot strength of aramid fiber is higher than glass fibre, and elongation at break is higher than carbon fiber and glass fibre, and therefore aramid fiber has higher toughness.Meanwhile, the density ratio carbon fiber of aramid fiber is approximately low by 20%, more about than glass fibre low by 45%, high temperature resistant and good insulating.Strengthen at aerial cable introducing aramid fiber as fortifying fibre in the outermost layer structure of plug, plug strengthened by the aerial cable of the composite material of structure carbon fiber, glass fibre, aramid fiber three layers of concentric structure, aerial cable can be made to strengthen plug and have higher intensity, larger toughness, higher insulating properties, lower density, keep original high stretch modulus simultaneously.
Summary of the invention
The present invention, for solving the problems of the technologies described above, provides a kind of high strength, high tenacity, high-insulativity, low-density, the composite material cable core rod of three layers of concentric structure of high stretch modulus and the manufacture method of this plug, for strengthening aerial cable.
To achieve these goals, the present invention adopts following technical scheme:
A kind of three layers of concentrically ringed high performance composites cable plug, described plug is the resin matrix composite mandril containing carbon fiber, glass fibre, aramid fiber, by be positioned at inner core position carbon fiber internal layer, be coated on glass fibre intermediate layer outside carbon fiber internal layer, and the aramid fiber skin be coated on outside glass fibre intermediate layer is formed, in the cross section of described plug, described carbon fiber internal layer, glass fibre intermediate layer and the outer field periphery of aramid fiber are concentric circles.
Preferably, described plug comprises following component: carbon fiber 35-45 part, glass fibre 10-15 part, aramid fiber 15-25 part, resin 20-45 part, in volume parts.
Preferably, described resin is thermosetting epoxy resin.
A manufacture method for three layers of concentrically ringed high performance composites cable plug, comprises the steps:
1) carbon fiber yarn, glass fiber yarn, aramid fiber yarn are fixed on creel, and make yarn bundle through thread board, carbon fiber is positioned in the middle part of creel, glass fibre and aramid fiber is symmetrical about carbon fiber, be from inside to outside distributed in carbon fiber both sides successively;
2) above-mentioned three kinds of fibers carry out drying, dipping process;
3) infiltrate the carbon fiber after resin through the first precuring mould, carry out precuring shaping, form carbon fibre composite preforming plug, and pass from the central through hole of the first circular collection yarn plate;
4) glass fibre after resin is infiltrated successively through the aperture of the first yarn dividing plate, the first circular collection yarn plate, then encapsulation steps 3) the carbon fibre composite preforming plug that obtains; Again through the second precuring mould, carry out precuring shaping, form the carbon fibers/fiberglass composite material preforming plug of two-layer concentric structure;
5) infiltrate the aramid fiber after resin successively through the first yarn dividing plate, the second yarn dividing plate, enter online ultrasonic processing apparatus and carry out supersonic modifying;
6) aramid fiber of supersonic modifying is through the second circular aperture collecting yarn plate, parcel step 4) the carbon fibers/fiberglass composite material preforming plug that obtains, then enter curing mold and carry out hot setting, obtain the composite material plug of carbon fibers/fiberglass/aramid fiber concentric structure;
7) step 6) the composite material plug that obtains at the uniform velocity by hauling machine, arrives winder and carries out rolling, to obtain final product under the effect of dragging of hauling machine.
Preferably, step 3) in, the central through hole diameter of the first described precuring mould is the 120%-140% of the internal layer diameter of composite material plug, and the temperature of the first precuring mould is 70-90 DEG C.
Preferably, the first described yarn dividing plate is symmetrically distributed in the left and right sides of the first precuring mould, and glass fibre is through the interior side through hole of the first yarn dividing plate, and aramid fiber is through the outer side through hole of the first yarn dividing plate.
Preferably, the centre bore of the described first circular collection yarn plate is positioned at the front end of the second precuring mould, and diameter is greater than the central through hole diameter of the first precuring mould; Be provided with many row's apertures around the central through hole of the first circular collection yarn plate and form the distribution of equally spaced circular array.
Preferably, step 4) in, the central through hole diameter of the second described precuring mould is the 110%-130% of the diameter in the intermediate layer of composite material plug; The temperature of the second precuring mould is 80-100 DEG C.
Preferably, step 6) in, described curing mold has multistage heating district, and preferably three sections of thermals treatment zone, increase from plug entrance gradually to outlet temperature, is respectively 130-140 DEG C, 150-160 DEG C, 190-200 DEG C.
Preferably, step 7) in, the hauling speed of described hauling machine is 0.30-0.35m/min.
Carbon fiber, glass fibre and aramid fiber priority in described composite material cable core rod and epoxy resin compound, form the composite material plug of three layers of concentric structure.Wherein, carbon fiber composite layer is the internal layer of composite core rod, mainly utilizes the high tensile of carbon fibre composite and high stretch modulus; Glass layer is wrapped in the periphery of carbon fiber, is the middle circle circular layer of composite core rod, mainly utilizes the high-insulativity of glass fiber compound material and high stretch modulus; Cross section is the outermost layer that circular aramid fiber reinforced composite layer forms composite core rod, mainly utilizes high tenacity and the high-insulativity of aramid fiber, reduces the density of composite core rod simultaneously.
Preferred composite material cable core rod carbon fiber used is eastern beautiful T700 series carbon fiber, and glass fibre is ECR Series glass fiber, and aramid fiber is Du Pont Kevlar-119 series fiber.
Described resin is thermosetting epoxy resin, curing agent is acid anhydride type curing agent, adds release agent, promoter etc. simultaneously.
Accompanying drawing explanation
Fig. 1: the composite material plug schematic diagram of carbon fiber, glass fibre, aramid fiber three layers of concentric structure.
Fig. 2: the composite material plug manufacture process schematic diagram of carbon fiber, glass fibre, aramid fiber three layers of concentric structure.
Wherein, 1 creel, 1-1 carbon fiber yarn, 1-2 glass fiber yarn, 1-3 aramid fiber yarn, 2 thread boards, 3 drying equipments, 4 glue grooves, 5 first precuring moulds, 6 first yarn dividing plates, 7 first circular collection yarn plates, 8 second precuring moulds, 9 second yarn dividing plates, 10 online ultrasonic processing apparatus, 11 second circular collection yarn plates, 12 curing molds, 13 hauling machines, 14 winders, 15 composite material plugs.
Concrete execution mode
Below in conjunction with accompanying drawing, concrete operation step is described:
Embodiment 1
1), carbon fiber yarn 1-1, glass fiber yarn 1-2, aramid fiber yarn 1-3 are fixed on creel 1, and make yarn bundle through thread board 2, keep carbon fiber placed in the middle, glass fibre and aramid fiber be all symmetrical, be from inside to outside distributed in carbon fiber both sides successively, adjustment of tonicity, prevent fiber sagging, be wound around.
2), above-mentioned three kinds of fibers carry out dehumidification treatments by drying equipment 3, then enter glue groove 4 and infiltrate liquid resin.
3), infiltrate the carbon fiber after resin and first form carbon fibre composite preforming plug through the first precuring mould 5, glass fibre and aramid fiber are then through the first yarn dividing plate 6 outside precuring mould 5.
4), successively wrap up through the carbon fibre composite preforming plug of the central through hole of the first circular collection yarn plate 7 through the glass fiber yarn bundle of the aperture of the first yarn dividing plate 6, first circle collection yarn plate 7, and enter the second precuring mould 8 together, form the carbon fibers/fiberglass composite material preforming plug of two-layer concentric structure.
5), pass the second yarn dividing plate 9 again through the aramid fiber of the first yarn dividing plate 6, enter online ultrasonic processing apparatus 10 and carry out supersonic modifying.
6), aramid fiber leaves online ultrasonic processing apparatus 10, through the aperture of the second circular collection yarn plate 11, parcel have passed through the carbon fibers/fiberglass composite material preforming plug of the second precuring mould 8, enter curing mold 12 again and carry out hot setting, obtain the composite material plug 15 of carbon fibers/fiberglass/aramid fiber concentric structure.
7) the composite material plug 15, after curing molding at the uniform velocity by hauling machine 13, arrives winder 14 and carries out rolling under the effect of dragging of hauling machine 13.
The above workshop keeps constant temperature and controlled humidity.
Above-mentioned steps 2) described in drying equipment 3 adopt solid particle drier, such as silica-gel desiccant or soda lime drier, and to regularly replace.
Above-mentioned steps 2) described in glue groove 4 be open glue groove, and be furnished with resin infiltrate frock, as pressure roller, guider etc.
Above-mentioned steps 3) described in the central through hole diameter of the first precuring mould 5 determine according to the 120%-140% of the internal layer diameter of composite material plug, the temperature of the first precuring mould 5 is set to 70-90 DEG C.
Above-mentioned steps 3) described in the through hole of the first yarn dividing plate 6 symmetrical in the left and right sides of the first precuring mould 5, glass fibre is through the interior side through hole of the first yarn dividing plate 6, and aramid fiber is through the outer side through hole of the first yarn dividing plate 6.
Above-mentioned steps 4) described in the first circular centre bore integrate yarn plate 7 as the through hole (through-hole diameter is a bit larger tham the central through hole diameter of the first precuring mould 5, makes the central through hole that can collect yarn plate 7 through the carbon fibre composite preforming plug of the first precuring mould 5 through the first circle) of large-size.There are many row's apertures around the central through hole of the first circular collection yarn plate 7 and form the distribution of equally spaced circular array, what form glass fiber yarn bundle passes through path, be used for ensureing that glass fibre is evenly distributed on the periphery of carbon fibre composite preforming plug, and wrap carbon fiber composite material preforming plug completely, improves the insulating properties of composite material plug.Described first circular collection yarn plate 7 is positioned at the front end of the second precuring mould 8.
Above-mentioned steps 4) described in the central through hole diameter of the second precuring mould 8 determine according to the 110%-130% of the diameter in the intermediate layer of composite material plug.The temperature of the second precuring mould 8 is 80-100 DEG C, equals or slightly larger than the temperature of the first precuring mould 5.
Above-mentioned steps 5) described in online ultrasonic processing apparatus 10 have two, because aramid fiber is distributed in the outside of carbon fiber and glass fibre symmetrically.Online ultrasonic process is the interface bond strength in order to improve resin and aramid fiber.
Above-mentioned steps 5) described in the second yarn dividing plate 9 and the similar of the first yarn dividing plate 6, be only the passage as aramid fiber.
Above-mentioned steps 6) described in the second circular collection yarn plate 11 and the first circle collect the structural similarity of yarn plate 7, be and around the large through-hole of center, have many row's apertures and form the distribution of equally spaced circular array, but the central through hole diameter of the second circular collection yarn plate 11 is than first, and the circular central through hole diameter collecting yarn plate 7 is large.
Above-mentioned steps 6) described in the aramid fiber through the second circular collection yarn plate 11 evenly wrap up through the carbon fibers/fiberglass composite material preforming plug of the second precuring mould 8.
Above-mentioned steps 3), 4), 5), 6) described in the first yarn dividing plate 6, second yarn dividing plate 9, first circle collection yarn plate 7 and second circularly integrate yarn plate 11 as stainless steel or polytetrafluoroethylmaterial material structural member.
Above-mentioned steps 6) described in curing mold 12 there is multistage heating district, preferably three sections of thermals treatment zone, increase from plug entrance gradually to outlet temperature, are respectively 130-140 DEG C, 150-160 DEG C, 190-200 DEG C.
Above-mentioned steps 7) described in hauling machine 13 be caterpillar tractor, grabability keeps stable, and hauling speed is also stablized, and hauling speed is that 0.30-0.35m/min is advisable.
Above-mentioned steps 7) described in rolling speed synchronous with hauling speed.
All through holes of three kinds of fiber processes described in above step all have rounded corner and polishing.The moulding process of this composite material plug belongs to pultrusion molding process.
Embodiment 2
A kind of three layers of concentrically ringed high performance composites cable plug, described plug is the epoxy resin-base composite material plug containing carbon fiber, glass fibre, aramid fiber, by be positioned at inner core position carbon fiber internal layer, be coated on glass fibre intermediate layer outside carbon fiber internal layer, and the aramid fiber skin be coated on outside glass fibre intermediate layer is formed, in the cross section of described plug, described carbon fiber internal layer, glass fibre intermediate layer and the outer field periphery of aramid fiber are concentric circles.Described plug comprises following component: 35 parts, carbon fiber, 10 parts, glass fibre, aramid fiber 15 parts, resin 20 parts, in volume parts.Adopt method manufacture described in embodiment 1.
Embodiment 3
A kind of three layers of concentrically ringed high performance composites cable plug, described plug is the epoxy resin-base composite material plug containing carbon fiber, glass fibre, aramid fiber, by be positioned at inner core position carbon fiber internal layer, be coated on glass fibre intermediate layer outside carbon fiber internal layer, and the aramid fiber skin be coated on outside glass fibre intermediate layer is formed, in the cross section of described plug, described carbon fiber internal layer, glass fibre intermediate layer and the outer field periphery of aramid fiber are concentric circles.Described plug comprises following component: 45 parts, carbon fiber, 15 parts, glass fibre, aramid fiber 25 parts, resin 45 parts, in volume parts.Adopt method manufacture described in embodiment 1.
Embodiment 4
A kind of three layers of concentrically ringed high performance composites cable plug, described plug is the epoxy resin-base composite material plug containing carbon fiber, glass fibre, aramid fiber, by be positioned at inner core position carbon fiber internal layer, be coated on glass fibre intermediate layer outside carbon fiber internal layer, and the aramid fiber skin be coated on outside glass fibre intermediate layer is formed, in the cross section of described plug, described carbon fiber internal layer, glass fibre intermediate layer and the outer field periphery of aramid fiber are concentric circles.Described plug comprises following component: 40 parts, carbon fiber, 12 parts, glass fibre, aramid fiber 20 parts, resin 35 parts, in volume parts.Adopt method manufacture described in embodiment 1.
Performance test shows: the hot strength of the composite material plug of three layers of concentric structure of the present invention is between 2200-2800MPa.By regulating the volume fraction of three kinds of fibers, the hot strength requirement of 1 grade (being not less than 2100MPa) and 2 grades (being not less than 2400MPa) of GB GB/T 29324-2012 " aerial condutor fiber-reinforced resin matrix compound material plug " can be met.The stretch modulus of the composite material plug of three layers of concentric structure of the present invention is between 115-130GPa.By regulating the volume fraction of three kinds of fibers, 1 grade (being not less than 110GPa) and 2 grades of (being not less than 120GPa) modulus of elasticity requirements of GB GB/T 29324-2012 " aerial condutor fiber-reinforced resin matrix compound material plug " can be met.The density 1.60-1.70g/cm of the composite material plug of three layers of concentric structure of the present invention
3, be significantly less than the density (1.85-2.00g/cm that traditional carbon fibers/fiberglass strengthens polymer matrix composites cable plug
3), thus demonstrate the clear superiority of lightweight feature of the present invention and corresponding high specific strength, high ratio modulus.
The high tenacity of the composite material plug of three layers of concentric structure of the present invention is with conspicuous characteristics, strengthens the winding capacity of polymer matrix composites cables plug and torsion capacity respectively improves 20%-25% than traditional carbon fibers/fiberglass.
The specific insulation of the composite material plug of three layers of concentric structure of the present invention is greater than 10
12Ω m, the electrical insulating property strengthening polymer matrix composites cable plug with traditional carbon fibers/fiberglass is suitable, can meet the electrical insulating property requirement of composite material cable core rod.
By reference to the accompanying drawings the specific embodiment of the present invention is described although above-mentioned; but not limiting the scope of the invention; one of ordinary skill in the art should be understood that; on the basis of technical scheme of the present invention, those skilled in the art do not need to pay various amendment or distortion that creative work can make still within protection scope of the present invention.
Claims (10)
1. one kind three layers concentrically ringed high performance composites cable plug, it is characterized in that, described plug is the resin matrix composite mandril containing carbon fiber, glass fibre, aramid fiber, by be positioned at inner core position carbon fiber internal layer, be coated on the glass fibre intermediate layer outside carbon fiber internal layer and the aramid fiber skin be coated on outside glass fibre intermediate layer is formed, in the cross section of described plug, described carbon fiber internal layer, glass fibre intermediate layer and the outer field periphery of aramid fiber are concentric circles.
2. fibrous composite cable plug as claimed in claim 1, it is characterized in that, described plug comprises following component: carbon fiber 35-45 part, glass fibre 10-15 part, aramid fiber 15-25 part, resin 20-45 part, in volume parts.
3. fibrous composite cable plug as claimed in claim 1, it is characterized in that, described resin is thermosetting epoxy resin.
4. a manufacture method for three layers of concentrically ringed high performance composites cable plug, is characterized in that, comprise the steps:
1) carbon fiber yarn, glass fiber yarn, aramid fiber yarn are fixed on creel, and make yarn bundle through thread board, carbon fiber is positioned in the middle part of creel, glass fibre and aramid fiber is symmetrical about carbon fiber, be from inside to outside distributed in carbon fiber both sides successively;
2) above-mentioned three kinds of fibers carry out drying, dipping process;
3) infiltrate the carbon fiber after resin through the first precuring mould, carry out precuring shaping, form carbon fibre composite preforming plug, and pass from the central through hole of the first circular collection yarn plate;
4) glass fibre after resin is infiltrated successively through the aperture of the first yarn dividing plate, the first circular collection yarn plate, then encapsulation steps 3) the carbon fibre composite preforming plug that obtains; Again through the second precuring mould, carry out precuring shaping, form the carbon fibers/fiberglass composite material preforming plug of two-layer concentric structure;
5) infiltrate the aramid fiber after resin successively through the first yarn dividing plate, the second yarn dividing plate, enter online ultrasonic processing apparatus and carry out supersonic modifying;
6) aramid fiber of supersonic modifying is through the second circular aperture collecting yarn plate, parcel step 4) the carbon fibers/fiberglass composite material preforming plug that obtains, then enter curing mold and carry out hot setting, obtain the composite material plug of carbon fibers/fiberglass/aramid fiber concentric structure;
7) step 6) the composite material plug that obtains at the uniform velocity by hauling machine, arrives winder and carries out rolling, to obtain final product under the effect of dragging of hauling machine.
5. method as claimed in claim 4, is characterized in that, step 3) in, the central through hole diameter of the first described precuring mould is the 120%-140% of the internal layer diameter of composite material plug, and the temperature of the first precuring mould is 70-90 DEG C.
6. method as claimed in claim 4, it is characterized in that, the first described yarn dividing plate is symmetrically distributed in the left and right sides of the first precuring mould, and glass fibre is through the interior side through hole of the first yarn dividing plate, and aramid fiber is through the outer side through hole of the first yarn dividing plate.
7. method as claimed in claim 4, is characterized in that, the centre bore of the described first circular collection yarn plate is positioned at the front end of the second precuring mould, and diameter is greater than the central through hole diameter of the first precuring mould; Be provided with many row's apertures around the central through hole of the first circular collection yarn plate and form the distribution of equally spaced circular array.
8. method as claimed in claim 4, is characterized in that, step 4) in, the central through hole diameter of the second described precuring mould is the 110%-130% of the diameter in the intermediate layer of composite material plug; The temperature of the second precuring mould is 80-100 DEG C.
9. method as claimed in claim 4, is characterized in that, step 6) in, described curing mold has multistage heating district, preferably three sections of thermals treatment zone, increase from plug entrance gradually to outlet temperature, are respectively 130-140 DEG C, 150-160 DEG C, 190-200 DEG C.
10. method as claimed in claim 4, is characterized in that, step 7) in, the hauling speed of described hauling machine is 0.30-0.35m/min.
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