CN102516708B - Composite core for power grid transmission line wire and preparation method thereof - Google Patents
Composite core for power grid transmission line wire and preparation method thereof Download PDFInfo
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- CN102516708B CN102516708B CN201110380721.6A CN201110380721A CN102516708B CN 102516708 B CN102516708 B CN 102516708B CN 201110380721 A CN201110380721 A CN 201110380721A CN 102516708 B CN102516708 B CN 102516708B
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- composite core
- fiber
- resin
- transmission line
- line wire
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- 238000002360 preparation method Methods 0.000 title claims abstract description 30
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 35
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 29
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Abstract
The invention provides a composite core for a power grid transmission line wire and a preparation method thereof. The composite core has high strength, high toughness, high glass-transition temperature and surface cleanness. Materials of the composite core comprise a resin material and a strengthening material. The resin material comprises a thermosetting resin, a curing agent, an accelerating agent, a releasing agent, a flexibilizer and nanometer particles. The strengthening material is one kind or a plurality of kinds of carbon fiber, glass fiber, basalt fiber, boron fiber, aramid fiber, silicon carbonate fiber and protein bound iodine (PBI) fiber. The content of composite core fiber Vf=50-80%, tensile strength of the composite core is not lower than 2100MPa, and glass transition temperature of the composite core is not lower than 180 DEG C. The toughness of the composite core is remarkably improved, and breakage and cracking probability caused by brittleness factors in production, transportation and wire hanging construction processes are reduced.
Description
Technical field
The invention belongs to forming composite, contain the plastic material field of strongthener, filler or preformed member, specifically relate to a kind of composite core for grid power transmission line wire and preparation method thereof.
Background technology
Aluminium Cable Steel Reinforced is that single or multiple lift aluminium strand is stranded in the reinforced type lead wire outside galvanized steel heart yearn, have simple in structure, set up with easy to maintenance, circuit cost is low, transmission capacity is beneficial to greatly, again Special Geographic conditions such as crossing over rivers and mountain valley lays, has good conductivity and the feature such as enough physical strength, tensile strength is large, tower bar distance can be amplified.Therefore be widely used in the built on stilts electric line of various voltage ranges.
The raising day by day that modern industry requires power supply reliability, the quality of power supply and the progressively increase of electric load demand, proposed acid test more to power industry.The construction of grid power transmission circuit is being faced with the problem such as quick dilatation and environment protection of rare, the power transmission of land resources growing tension, nonferrous metal resource.People's trial in 20 end of the centurys replaces metallic substance to make the core of wire with organic composite material, develops the synthetic core wire of advanced composite material.
That composite core has compared with traditional Aluminium Cable Steel Reinforced is lightweight, intensity is high, Heat stability is good, sag is low, current capacity is large and the advantage such as corrosion-resistant.Solve when electric power circuit transmission capacity improves and can make full use of again existing steel tower, avoided circuit corridor land used to increase this technical barrier as far as possible, the circuit in the capacity-increasing transformation to old circuit and shortage of land resource area is rebuild significant.
Abroad comprise about the development of composite core, Japan has developed the synthetic core wire of matrix material the nineties in 20th century, and product is divided into two kinds of carbon fiber core aluminium stranded wire and heat-resisting heat-resisting aluminium alloy stranded wire with carbon fiber cores.The quality of composite core is 1/5 of conventional steel core, and linear expansivity is about 1/12 of steel core.Evidence, the tensile strength of advanced composite material core wire significantly improves, and the stress strain curve characteristic under normal temperature presents rubber elastomer characteristics, there is no viscous deformation when Materials Fracture, and elongation after fracture is about 1.6%, and plasticity is not as steel core wire.
The CTC company of the U.S. released aluminium twisted wire with carbon fiber composite core in 2003, its heart yearn is layer and the coated single plug of making of glass fibre centered by carbon fiber, and carbon fiber adopts polymeric amide refractory process, carbonization to form; The epoxy resin of high strength, high tenacity formula has very strong shock-resistance, the stress of resistance to drag and stress in bending.Carbon fiber and glass fibre are carried out, after preliminary draft, in epoxy resin, flooding, and then in die material, curing molding is composite material core wire.Outer and the adjacent skin of heart yearn is trapezoid cross section aluminum steel thigh.The advantage such as that this heart yearn has compared with conventional wires is lightweight, intensity is large, low line loss, sag are little, but its toughness is poor, composite core has the probability that causes cracking and fracture because of brittleness factors in production, transportation and hanging wire construction process, produces to the construction of grid power transmission circuit and safety in operation and threatens.
Domestic existing wire is all to be formed by the wire conducting electricity very well or metal strip, and this wire stretch-proof intensity is low.Simultaneously due to the characteristic of metal, expand with heat and contract with cold seriously with the variation of envrionment temperature with metal wire, be prone to brittle failure.Given this, domestic also someone aluminium twisted wire with carbon fiber composite core that begins one's study, but there is no concrete operation parameter, also there is a certain distance with producing in research and development.
The application number that the inventor proposed in 2009 is CN200910237469.6, the application for a patent for invention that denomination of invention is " a kind of polymer matrix composites and preparation technology thereof who is applicable to capacity expansion conducting wire of power transmission line ", its technical scheme relates to a kind of high strength that steady and continuous is produced that is applicable to, high temperature resistant, surface is regular, the preparation technology of highly polished composite core, solve existing preparation technology's curing cycle long, easily occur that mould stops up, product surface smooth finish shortcoming, resin-coated fiber is not thorough, degradation problem under the mechanical strength that resin solidification technique causes, and improve the over-all properties of goods, save materials consumption.But toughness of material problem is not considered in this patent application, due to matrix material during for the preparation of grid power transmission circuit composite core, require composite core not ftracture and fracture because brittleness factors causes in production, transportation and hanging wire construction process, therefore the toughness of matrix material can not be ignored.
Application number is CN200910011099.4, the application for a patent for invention that denomination of invention is " glass fibre of transmission line wire and carbon fiber complex core " is seen, disclose a kind of glass fibre and carbon fiber complex core of transmission line wire, composite core is made up of carbon fiber 50%～55%, glass fibre 10%～15%, resin and subsidiary material 30%～40%.Composite core prepared by the present patent application has good tensile strength, but the raw material specially not adding for improving the toughness of material in the raw materials of composite core, only emphasizes the tensile strength of composite core.
The tensile strength of fiber reinforced resin based composite core can well be guaranteed, but because tenacity of fibre is poor, and therefore, how, in guaranteeing composite core comprehensive mechanical property, the toughness that effectively improves composite core is urgent problem.
Summary of the invention
The object of the invention is to provide a kind of composite core for grid power transmission line wire and preparation method thereof, and composite core of the present invention is guaranteeing under the prerequisite of tensile strength, i.e. composite core fibre content V
f=50～80%, composite core tensile strength is not less than 2100MPa, and composite core second-order transition temperature is not less than 190 ℃; Compare with common composite core, toughness improves 20～50%, and coiling performance is enclosed, do not ftractureed by 55D, 2, brings up to 30～45D, 2 circles, does not ftracture; And composite core any surface finish, roughness is relatively low.
For achieving the above object, the technical scheme that the present invention takes is:
For a composite core for grid power transmission line wire, described composite core is made up of resin material and fiber reinforced material with material, and its improvements are by volume mark meter: described resin material is 20%-50%, and fiber reinforced material is 50-80%;
Described resin material comprises: 100 parts of thermosetting resins, solidifying agent 50-150 part, promotor 1-20 part, releasing agent 1-20 part, toughner 5-20 part and nano particle 0.1-10 part.
Wherein: described fiber reinforced material is one or more that are selected from arbitrarily in carbon fiber, glass fibre, basalt fibre, boron fibre, aramid fiber, silicon carbide fiber or PBI fiber.
Wherein: described thermosetting resin is one or more that are selected from arbitrarily in resol, urea-formaldehyde resin, melamine formaldehyde resin, epoxy resin, unsaturated polyester, urethane or polyimide.
Wherein: described solidifying agent is one or more that are selected from arbitrarily in anhydrides, fat polyamine class, the polynary amine of alicyclic ring and aromatic polyamine.
Wherein: described promotor promotor is one or more that are selected from amine, phenol or imidazoles.
Wherein: described releasing agent is to be selected from one or more of Zinic stearas, stearic acid, silicone oil, silicone grease class or self-control inner pattern releasing agent applicable.
Wherein: described toughner is one or more that are selected from thermoplastic polyether glycol, polyethersulfone, polysulfones, polyether-ether-ketone, super-branched polyesteramide, liquid rubber, TLCP, polyester.
Wherein: described nano particle is to be selected from nano imvite, carbon nano fiber, nano-TiO
2, nanometer SiO
2, BaTiO
3or nanometer Al
2o
3in one or more.
One is prepared composite core method as claimed in claim 1, and its improvements are that described method steps is as follows:
1) uncoiling yarn bundle be fiber reinforced material under the pulling force of tractor, through 180～200 ℃ of dry pre-treatment 1-2 minute, after guide roller and boundling screen, yarn collecting wheel, enter dipping glue groove, the glue 0.5-1h of impregnated with resin material;
Wherein flood glue groove temperature and be decided to be 40 ℃～80 ℃;
2) fiber reinforced material infiltrating through resin material glue, by having the preforming tool of certain interface shape, discharges unnecessary resin and bubble, carries out premolding;
Wherein the temperature in preforming mould is 70 ℃～120 ℃;
3) curing molding:
The resin adhesive liquid of matrix material progressively heats up in leading portion curing mold, solidifies, through viscous state, gel state, vitreous state aftershaping under the effect of inner pattern releasing agent applicable, by towing mechanism pull-out stripping forming;
Wherein leading portion curing mold the first heating interval temperature is 120-180 ℃; The second heating interval temperature is 130～200 ℃; The 3rd heating interval temperature is 140～190 ℃;
The moulding of polymer matrix composites after fixing adopts four sections of laser heatings, and the temperature of heating interval is 170～220 ℃;
Wherein pulling speed is not less than 0.5m/min;
4) carry out goods rolling by wire coiler, be cut into the composite core of desired length by cutting unit.
Owing to having adopted technique scheme, compared with prior art, beneficial effect of the present invention comprises:
1) composite core toughness significantly improves
Prepare according to of the present invention the composite core that material and preparation technology obtain, test according to the company standard Q/GDW388-2009 of State Grid Corporation of China coiling performance, the performance index of final carbon fiber complex core goods should reach: compare with common composite core, toughness improves 20～50%, that is: coiling performance is enclosed, is not ftractureed by 55D, 2, bring up to 30～45D, 2 circles, do not ftracture, high tenacity has reduced fracture and cracking probability that carbon fiber complex core causes because of brittleness factors in production, transportation and hanging wire construction process;
2) tensile strength of composite core remains on certain level
Composite core fibre content Vf=50～80%, composite core tensile strength is not less than 2100MPa;
3) adopt DMA testing method, composite core second-order transition temperature is not less than 180 ℃;
4) preparation method is simple, easy handling
Preparation method of the present invention is to concrete parameter: pulling speed, solidification value and heating zone length etc. are carried out appropriate design, reduce preparation section as far as possible, make the preparation method of composite core simple, and composite core shaping speed are fast, and production efficiency is high.
Embodiment
Below in conjunction with example, the present invention will be described in detail.
The resin formula and the preparation technology that the invention discloses grid power transmission line wire carbon fiber complex core, composite core has high strength, high tenacity, high glass-transition temperature and surface smoothness.The present invention, in keeping composite core Good All-around Property, has significantly improved its toughness, has further reduced fracture and cracking probability that composite core causes because of brittleness factors in production, transportation and hanging wire construction process.
High tenacity carbon fiber complex core preparation technology's of the present invention resin system formula is: a kind of thermosetting resin, solidifying agent, promotor, releasing agent, toughner and nano particle etc.Wherein, solidifying agent is one or more that are selected from anhydrides, fat polyamine class, the polynary amine of alicyclic ring and aromatic polyamine class; Promotor being is selected from one or more in amine, phenol, imidazoles; Releasing agent is one or more that are selected from Zinic stearas, stearic acid, silicone oil, silicone grease class, self-control inner pattern releasing agent applicable; Toughner is to be selected from one or more of polyether glycol, polyethersulfone, polysulfones, polyether-ether-ketone, super-branched polyesteramide, liquid rubber, TLCP, polyester; Nano particle is to be selected from nano imvite, carbon nano fiber, nano-TiO
2, nanometer SiO
2, BaTiO
3or nanometer Al
2o
3in one or more.
The resin formula of high tenacity composite core is according to the composition of following proportioning: 100 parts of resins, 50～150 parts, solidifying agent, 1～20 part of promotor, toughner 5-20 part, 0.1～10 part of nano particle, 1～20 part of releasing agent.
Wherein fortifying fibre is: one or more in carbon fiber, basalt fibre, glass fibre, boron fibre, aramid fiber, silicon carbide fiber, PBI fiber.
Thermosetting resin refers in heating, adds and depress or under solidifying agent, action of ultraviolet light, carry out chemical reaction, crosslinking curing becomes a large class synthetic resins of insoluble not fusant matter, thermosetting resin is after solidifying, due to intermolecular cross-linking, form reticulated structure, therefore rigidity is large, hardness is high, heatproof is high, nonflammable, product size good stability, and conventional thermosetting resin has resol, urea-formaldehyde resin, melamine formaldehyde resin, epoxy resin, butadiene resin, unsaturated polyester, urethane, polyimide etc.Thermosetting resin of the present invention comprises: epoxy resin, polyimide, butadiene resin, urethane.Epoxy resin can be one or more in glycidyl ether class, glycidyl ester class, Racemic glycidol amine, alicyclic epoxide compound, aromatic epoxy compound.Wherein Racemic glycidol ethers can be one or more in dihydroxyphenyl propane (diphenylol propane glycidyl ether), bisphenol f type epoxy resin, polyphenol type tetraglycidel ether epoxy resin, polyethyleneglycol diglycidylether, polypropylene glycol diglycidyl ether, BDDE.Glycidyl ester class can be one or more in o-phthalic acid diglycidyl ester, Diglycidyl M-phthalate, tetrahydrophthalic acid 2-glycidyl ester, hexahydrophthalic acid 2-glycidyl ester.Alicyclic epoxide compound can be one or more in bicyclopentadiene dioxide, tetrahydrobenzene ester epoxy resin, titanium dioxide double cyclopentenyl ether.Racemic glycidol amine can be one or more in 4,4`-diaminodiphenylmethane epoxy resin, p-aminophenol epoxy resin, trimeric cyanamide epoxy resin and glycolylurea epoxide resin.Aromatic epoxy compound can be aromatic polyether tetraglycidel ether epoxy resin, Aromatic Hyperbranched Polyesters type epoxy resin etc.
Strongthener is mainly used in increasing toughness and the intensity of thermosetting resin, the classification of strongthener is just like wood powder, mineral powder, fiber or textiles, strongthener of the present invention is selected fiber, and fiber is one or more that are selected from arbitrarily in carbon fiber, basalt fibre, glass fibre, boron fibre, aramid fiber, silicon carbide fiber, polybenzimidazole fibre; Carbon fiber is for to make through carbonization with polyacrylonitrile fibre, pitch fibers, viscose yarn or phenolic fibre; Basalt fibre be basalt building stones after 1450 ℃～1500 ℃ meltings, the continuous fibre forming by platinum rhodium bushing high speed pulling; Aramid fiber is one or more in the two oxazole fibers of polyparaphenylene benzo, polyparaphenylene benzo double thiazole fiber, polyetheretherketonefiber fiber or polysulfones base nylon.
Solidifying agent in the present invention is one or more that are selected from arbitrarily in anhydrides, fat polyamine class, the polynary amine of alicyclic ring and aromatic polyamine, the formula system viscosity that acid anhydride type curing agent uses is low, usage period is long, can be divided into aromatic anhydride, fatty acid anhydride and halogenation acid anhydrides etc.In the present invention formula, related acid anhydride type curing agent can be 70 acid anhydrides, 70 acid anhydrides be divinyl with maleic acid anhydride reactant and must modified anhydride; 80# anti-flaming liquid acid anhydrides, it is brominated liquid acid anhydrides, its cured product has from fire from the flame retardant resistance of putting out, good electric property, moisture resistivity and physical and mechanical properties; 82 acid anhydrides, are the tung oil acid anhydrides of tung oil-modified MALEIC ANHYDRIDE gained, have self-plasticizing action, can make the mechanical property of cured article and water resistance all make moderate progress.Fat polyamine can be quadrol, diethylenetriamine, Triethylenetetramine (TETA), tetren, hexanediamine, m-xylene diamine etc.The polynary amine curing agent of alicyclic ring can be Meng alkane diamines, N-aminoethyl piperazine, isophorone diamine etc.Aromatic polyamine class solidifying agent can be m-xylene diamine, mphenylenediamine, diamino diphenyl sulfone etc.
Promotor in the present invention is one or more that are selected from arbitrarily in amine, phenol, imidazoles; Promotor one is the solidifying agent as reinforced resin, improves the hardness of rubber item; The 2nd, form binding system together with the auxiliary agents such as Resorcinol, the bonding of rubber and fiber played an important role.
Releasing agent in the present invention is one or more that are selected from arbitrarily in Zinic stearas, stearic acid, silicone oil, silicone grease class.
Toughner in the present invention is to be selected from arbitrarily one or more of polyether glycol, polyethersulfone, polysulfones, polyether-ether-ketone, super-branched polyesteramide, liquid rubber, TLCP, polyester; The thermoplastic resins such as polyethersulfone, polysulfones, polyether-ether-ketone have the performance of the thermal softening of being subject to, hardening by cooling, and react with not, and no matter heating and cooling repeat how many times, all can keep this performance,, the advantage of thermoplastic resin is that machine-shaping is easy, has higher mechanical energy.Super-branched polyesteramide has that viscosity is low, functionality is high, solubility property is good and without advantages such as entanglement.Liquid rubber mainly refers to liquid nitrile rubber, fluid silicone rubber etc.TLCP is risen after lytropic liquid crystals polymkeric substance, its excellent combination property, and can carry out injection moulding, extrusion moulding processing.Polyester, by polyvalent alcohol and polyprotonic acid polycondensation and polymkeric substance general name.Mainly refer to polyethylene terephthalate (PET), also comprise traditionally the line style thermoplastic resins such as polybutylene terephthalate (PBT) and polyarylester.Polyarylester is the high performance engineering plastics of a class, mainly contains poly terephthalic acid diallyl, three kinds, ekonol and U-polymkeric substance.
Nano particle in the present invention is to be selected from arbitrarily nano imvite, carbon nano fiber, nano-TiO
2, nanometer SiO
2, BaTiO
3or nanometer Al
2o
3in one or more.Adding of nano particle and toughner, composite material toughness of the present invention is greatly improved.Adding of nano particle makes matrix material in the time receiving external force, easily absorbs stress; Adding of toughner improves the toughness of resin system formula greatly, and the coiling performance of matrix material is promoted, and ftractures and fracture probability in production, transportation and hanging wire construction process thereby reduce composite core because brittleness factors causes.
Relevant parameter corresponding to novel high tenacity composite core preparation technology of the present invention draws on following basis: take temperature field in mould corresponding to the related resin curing process of composite core preparation technology and the dynamic change of resin solidification degree as reference, with pulling speed, solidification value, heating interval length is as three factors, and thermotolerance, tensile strength, toughness are carried out orthogonalization design as three levels.
The preparation technology who the invention provides a kind of novel high tenacity grid power transmission line wire carbon fiber complex core, comprises the following steps:
(1) uncoiling yarn bundle (selected fiber) is under the pulling force of tractor, through 180～200 ℃ of drying treatment 1 minute, after a series of guide rollers and boundling screen, yarn collecting wheel, enters dipping glue groove, fully soaks into the glue of selected resin formula;
(2) selected fiber fully infiltrates through nano modification high tenacity resin formula glue, by having the preforming tool of certain interface shape, discharges unnecessary resin and bubble, carries out premolding;
(3) curing molding: by leading portion curing mold, selected nano modification high tenacity resin formula glue progressively heats up in mould, solidify through viscous state, gel state, vitreous state aftershaping, under the effect of inner pattern releasing agent applicable, by towing mechanism pull-out stripping forming;
(4) post curing treatment;
(5) carry out goods rolling by wire coiler, be cut into the goods of desired length by cutting unit.
Wherein, the glue groove homo(io)thermism of described dipping nano modification high tenacity resin formula system is 40-80 ℃, and the temperature in preforming mould is 70～120 ℃.
Wherein, leading portion curing mold the first heating interval temperature that is applicable to nano modification high tenacity resin formula system is 120-180 ℃; The second heating interval temperature is 130～200 ℃; The 3rd heating interval temperature is 140～190 ℃.
Wherein, be applicable to four sections of laser heatings of after fixing process using of nano modification high tenacity carbon fiber complex core, the temperature of heating interval is 170～220 ℃.
Wherein, pulling speed is not less than 0.5m/min.
Resin system formula and the preparation technology of carbon fiber complex core for grid power transmission line wire of the present invention, test according to the company standard Q/GDW388-2009 of State Grid Corporation of China coiling performance, the performance index of final carbon fiber complex core goods should reach: compare with common composite core, toughness improves 20～50%, and (coiling performance is enclosed, is not ftractureed by 55D, 2, bring up to 30～45D, 2 circles, do not ftracture), composite core fibre content V
f=50～80%, composite core tensile strength is not less than 2100MPa, and composite core second-order transition temperature is not less than 190 ℃ (adopting DMA testing method).
Embodiment 1
The related resin formula of novel high tenacity carbon fiber complex core preparation technology of the present invention, according to following proportioning: 100 parts of thermosetting resins (glycidyl ether based epoxy resin), 100 parts, solidifying agent (anhydrides), 8 parts of promotor (amine), 5 parts of nano particles (nano imvite), 10 parts of toughner (polyether glycol class), 3 parts of releasing agents (stearic acid).
The homo(io)thermism of glue groove is 60 ℃, and the carbon fiber infiltrating through resin is 100 ℃ in the temperature of mould leading portion preheating zone.
The leading portion curing mold corresponding to composite core preparation technology of novel high tenacity of the present invention, the first corresponding heating interval is 160 ℃; The second heating interval is 180 ℃; The 3rd heating interval is 170 ℃.After fixing interval, adopts four sections of laser heating modes, and the temperature of heating interval is 210 ℃.
Pulling speed is made as 0.5m/min.
After testing, carbon fiber complex core coiling performance is 42D, 2 circles, the composite core that do not ftracture toughness raising 24% to the sample preparing according to above-mentioned novel high tenacity composite core preparation technology, and second-order transition temperature is 190 ℃, tensile strength 2257MPa.
Embodiment 2
The related resin formula of novel high tenacity composite core preparation technology of the present invention, according to following proportioning: 100 parts of resins (glycidyl ether based epoxy resin), 100 parts, solidifying agent (anhydrides), 12 parts of promotor (amine), nano particle (nanometer SiO
2) 3 parts, 20 parts of toughner (super-branched polyesteramide), 5 parts of releasing agents (stearic acid).
The homo(io)thermism of glue groove is 60 ℃, and the carbon fiber infiltrating through resin is 110 ℃ in the temperature of mould leading portion preheating zone.
Leading portion curing mold corresponding to novel high tenacity composite core preparation technology of the present invention, the first corresponding heating interval is 145 ℃; The second heating interval is 180 ℃; The 3rd heating interval is 175 ℃.After fixing interval, adopts four sections of laser heating modes, and the temperature of heating interval is 220 ℃.
Pulling speed is made as 0.6m/min.
After testing, carbon fiber complex core coiling performance is 38D, 2 circles, the composite core that do not ftracture toughness raising 31% to the sample preparing according to above-mentioned novel high tenacity composite core preparation technology, and second-order transition temperature is 198 ℃, tensile strength 2340MPa.
Embodiment 3
The related resin formula of novel high tenacity composite core preparation technology of the present invention, according to following proportioning: 100 parts of resins (aromatic polyether tetraglycidel ether epoxy resin), 110 parts, solidifying agent (anhydrides), 10 parts of promotor (amine), nano particle (nanometer SiO
2) 2 parts, 18 parts of toughner (polyether-ether-ketone), 5 parts of releasing agents (stearic acid).
The homo(io)thermism of glue groove is 60 ℃, and the carbon fiber infiltrating through resin is 110 ℃ in the temperature of mould leading portion preheating zone.
Leading portion curing mold corresponding to novel high tenacity composite core preparation technology of the present invention, the first corresponding heating interval is 150 ℃; The second heating interval is 185 ℃; The 3rd heating interval is 170 ℃.After fixing interval, adopts four sections of laser heating modes, and the temperature of heating interval is 200 ℃.
Pulling speed is made as 0.55m/min.
After testing, carbon fiber complex core coiling performance is 40D, 2 circles, does not ftracture the sample preparing according to above-mentioned novel high tenacity composite core preparation technology, and toughness improves 27%, and second-order transition temperature is 195 ℃, tensile strength 2308MPa.
According to specific exemplary embodiment, invention has been described herein.It will be apparent under not departing from the scope of the present invention, carrying out to one skilled in the art suitable replacement or revise.Exemplary embodiment is only illustrative, rather than restriction to scope of the present invention, and scope of the present invention is defined by appended claim.
Claims (5)
1. for a composite core for grid power transmission line wire, described composite core is made up of resin material and fiber reinforced material with material, it is characterized in that by volume mark meter: described resin material is 20%-50%, and fiber reinforced material is 50-80%;
Described resin material comprises: 100 parts of thermosetting resins, solidifying agent 50-150 part, promotor 1-20 part, releasing agent 1-20 part, toughner 5-20 part and nano particle 0.1-10 part;
Described releasing agent is to be selected from one or more of Zinic stearas, stearic acid, silicone oil, silicone grease class or self-control inner pattern releasing agent applicable;
Described toughner is to be selected from one or more of polyethersulfone, polysulfones, polyether-ether-ketone, super-branched polyesteramide, liquid rubber, TLCP, polyester;
Described nano particle is to be selected from nano imvite, carbon nano fiber, nano-TiO
2, nanometer SiO
2, BaTiO
3or nanometer Al
2o
3in one or more;
Described composite core, preparation method's step is as follows:
1) uncoiling yarn bundle be fiber reinforced material under the pulling force of tractor, through 180～200 ℃ of dry pre-treatment 1-2 minute, after guide roller and boundling screen, yarn collecting wheel, enter dipping glue groove, the glue 0.5-1h of impregnated with resin material;
Wherein flood glue groove temperature and be decided to be 40 ℃～80 ℃;
2) fiber reinforced material infiltrating through resin material glue, by having the preforming tool of certain interface shape, discharges unnecessary resin and bubble, carries out premolding;
Wherein the temperature in preforming mould is 70 ℃～120 ℃;
3) curing molding:
The resin adhesive liquid of matrix material progressively heats up in leading portion curing mold, solidifies, through viscous state, gel state, vitreous state aftershaping under the effect of inner pattern releasing agent applicable, by towing mechanism pull-out stripping forming;
Wherein leading portion curing mold the first heating interval temperature is 120-180 ℃; The second heating interval temperature is 130～200 ℃; The 3rd heating interval temperature is 140～190 ℃;
The moulding of polymer matrix composites after fixing adopts four sections of laser heatings, and the temperature of heating interval is 170～220 ℃;
Wherein pulling speed is not less than 0.5m/min;
4) carry out goods rolling by wire coiler, be cut into the composite core of desired length by cutting unit.
2. the composite core for grid power transmission line wire as claimed in claim 1, is characterized in that described fiber reinforced material is one or more that are selected from arbitrarily in carbon fiber, glass fibre, basalt fibre, boron fibre, aramid fiber, silicon carbide fiber or PBI fiber.
3. the composite core for grid power transmission line wire as claimed in claim 1, is characterized in that described thermosetting resin is one or more that are selected from arbitrarily in resol, urea-formaldehyde resin, melamine formaldehyde resin, epoxy resin, unsaturated polyester, urethane or polyimide.
4. the composite core for grid power transmission line wire as claimed in claim 1, is characterized in that described solidifying agent is one or more that are selected from arbitrarily in anhydrides, fat polyamine class, the polynary amine of alicyclic ring and aromatic polyamine.
5. the composite core for grid power transmission line wire as claimed in claim 1, is characterized in that described promotor being is selected from one or more in amine, phenol or imidazoles.
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| US11955782B1 (en) | 2022-11-01 | 2024-04-09 | Typhon Technology Solutions (U.S.), Llc | System and method for fracturing of underground formations using electric grid power |
| CN116178933B (en) * | 2023-05-05 | 2023-08-01 | 西隆电缆有限公司 | High-flame-retardance high-wear-resistance cable material and cable |
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| CN101572132A (en) * | 2009-07-11 | 2009-11-04 | 程显军 | Glass fiber and carbon fiber composite core for wire of transmission line |
| CN101864145A (en) * | 2010-06-08 | 2010-10-20 | 桂林五环电器制造有限公司 | High heat conductive insulating impregnated resin used for air reactor and preparation method thereof |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101572132A (en) * | 2009-07-11 | 2009-11-04 | 程显军 | Glass fiber and carbon fiber composite core for wire of transmission line |
| CN101864145A (en) * | 2010-06-08 | 2010-10-20 | 桂林五环电器制造有限公司 | High heat conductive insulating impregnated resin used for air reactor and preparation method thereof |
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