CN105777016A - High-voltage-resistant power transmission pipeline material and preparation method thereof - Google Patents
High-voltage-resistant power transmission pipeline material and preparation method thereof Download PDFInfo
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- CN105777016A CN105777016A CN201610216313.XA CN201610216313A CN105777016A CN 105777016 A CN105777016 A CN 105777016A CN 201610216313 A CN201610216313 A CN 201610216313A CN 105777016 A CN105777016 A CN 105777016A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/06—Aluminous cements
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/28—Fire resistance, i.e. materials resistant to accidental fires or high temperatures
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/90—Electrical properties
- C04B2111/92—Electrically insulating materials
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- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Laying Of Electric Cables Or Lines Outside (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The invention discloses a high-voltage-resistant power transmission pipeline material.The high-voltage-resistant power transmission pipeline material is prepared from, by mass, 100 parts of cement, 150-300 parts of ultra-fine aggregate, 5-50 parts of superfine powder, 15-40 parts of macromolecule emulsion, 0.5-1.0 part of water reducer, 0.05-0.1 part of defoaming agent and 0.02-0.08 part of fiber in a mixed mode.Through reasonable composition design, the prepared high-voltage-resistant power transmission pipeline material has the advantages of being high in strength and insulating performance, resistant to high temperature, good in durability, resistant to abrasion and chemical corrosion and high in permeating resistant and elasticity modulus and achieving easy heat dissipation; the problems that an organic polymer material of a traditional power cable dissipates heat slowly, the cable ages at high temperature, and insulation deteriorates can be effectively solved, the loss of power transmission is avoided, the using durability of the product is improved, and economic cost is lowered.
Description
Technical field
The invention belongs to technical field of power transmission, be specifically related to a kind of high voltage tolerant input electric pipe material and preparation method thereof.
Background technology
In the planning building global interconnection electrical network, vast capacity high voltage power transmission pipeline becomes one of important technical support means.
Existing transmission line of electricity mainly has overhead transmission line and power cable two ways.Aerial line is aerial conducting wire, and conductor heat radiation is not problem,
But alternate (interpolar) insulation mainly relies on air insulation, and therefore phase spacing is relatively big, active channel width, high voltage or super
Channel width and wire need to be increased during high-tension transmission further ground level, comprehensive cost will be increased；Power cable transmission of electricity is generally
Employing organic material insulate, and phase spacing is compact, takes up room little, but faces heat radiation with organic insulation in high temperature environments
Aging and insulation degradation problem, transmission capacity is by a definite limitation, and cost is expensive.So comprehensively solving the two
Problem, just can be greatly improved power circuit transmission capacity.
As the design focal point of vast capacity high voltage power transmission pipeline, choosing of insulant is most important.Power cable generally uses
Dielectric made by SF6, crosslinked polyethylene, insulating oil etc.；Resin concrete combines poly-as a kind of new insulation material, its performance
Laminate material, cement inorganic material and concrete material performance, it is ensured that insulation and the coordination of heat dispersion.PC (resin coagulation
Soil) start from the eighties in last century as the research of insulant, the U.S. substitutes pottery with PC and manufactures insulator, and at 75kV
Electric pressure is applied, except SiO in its insulation system material2(generally glass fibre or silicon powder filler) inorganic material
Outward, remaining all high-molecular organic material, and resin accounts for the 40%-60% of insulation system volume.ABB AB selects acrylic acid
Ester or ethylene acid esters are as polymer, and are mixed into 4 kinds of aggregates, with the PCC of cement mixing, impact strength that its dielectric is pressure
Reach 24kV/mm, be good high pressure resistant insulation material.But PC insulator is smooth, therefore not as pottery due to its surface
Self-cleaning property is not as pottery or glass, not good enough at heavy pollution regional representation, limits its popularization and application.
Chinese patent " a kind of insulating concrete material and technology of preparing " thereof (Publication No. CN102617079 A) by polymer and
Waterproofing agent is formulated into concrete to realize concrete hydrophobicity, reduces inside concrete water absorption rate thus reaches the high resistance of concrete,
But PCC dielectric strength prepared by this method does not the farthest reach high power capacity high-tension transmission line requirements.Chinese patent is " a kind of
High-impedance high-impermeability concrete material and preparation method thereof " (Publication No. CN 200810046967 A) propose polymer and light
Aggregate realizes high compactness and the high permeability resistant energy of inside concrete, but is easily caused whole concrete through the lightweight aggregate of pre-wetted treatment
The increase of system interior humidity so that its concrete resistivity reduces, and is not suitable in high voltage environment.
Summary of the invention
For realizing ultra-high capacity high-tension transmission pipeline good insulating performance, solve the organic insulations such as tradition crosslinked polyethylene and dissipate
Heat, organic insulation aging and insulation degradation problem in high temperature environments and tradition PC insulator self-cleaning performance are poor, set
The Financial cost problem that fat content is high and brings, the present invention provides a kind of high insulation, high temperature resistant, easy heat radiation, good endurance and warp
High voltage tolerant input electric pipe material of Ji and preparation method thereof, described high voltage tolerant input electric pipe material can effectively solve conventional electric power electricity
The problem that the heat radiation of cable organic material is slow, delays aging, insulation degradation in high temperature environments, reduces the loss of electric power transmission, increases
Add product useful life longevity, reduce Financial cost, it is ensured that safe operation under 35kV electric pressure.
For achieving the above object, the technical solution used in the present invention is: a kind of high voltage tolerant input electric pipe material, and it is by cement, super
Fine aggregate, fine powder, macromolecule emulsion, water reducer, defoamer and fiber with
100:(150-300): (5-50): (15-40): (0.5-1.0): (0.05-0.10): the mass ratio of (0.02-0.08) mixes.
In such scheme, described cement is one or more in portland cement, aluminate cement, sulphate aluminium cement.
In such scheme, the particle size range of described cement meets: 1-20 μm accounts for the 10-20% of gross mass, and 80-100 μm accounts for
The 50-70% of gross mass；Or meet: 1-4 μm accounts for the 2-5% of gross mass, and 10-15 μm accounts for the 15-25% of gross mass, 100-120 μm
Account for the 50-65% of gross mass；Or meet: 0.5-4 μm accounts for the 2-5% of gross mass, and 8-15 μm accounts for the 7-15% of gross mass, 40-60 μm
Accounting for the 20-30% of gross mass, 110-130 μm accounts for the 30-40% of gross mass.
In such scheme, described ultra-fine gather materials for high-purity spy's fine quartz sand, SiO2Content >=99.9%, Fe2O3Content is less than
0.001%, gather materials before using and need to dry no less than 4h through 105 DEG C.
In such scheme, described fine powder is one or more in flyash, wollastonite, mica powder, metakaolin.
In such scheme, described macromolecule emulsion be aqueous epoxy resins, ethylene acid esters emulsion, acrylic acid ester emulsion, styrene-
One or more in acrylate rabbit grandfather, vinyl acetate emulsion, vinylacetate, styrene-butadiene latex, propyl benzene latex.
In such scheme, described water reducer is polycarboxylic acid series high efficiency water reducing agent, Gu containing for 20-25%, water-reducing rate is 25-27%.
In such scheme, described defoamer is silicone defoamer.
In such scheme, described fiber is polyethylene fibre, polypropylene fibre, polyacrylonitrile fibre, vinal, profound
One or more in military rock fiber.
The preparation method of above-mentioned a kind of high voltage tolerant input electric pipe material, comprises the following steps:
1) weighing of each component: by cement, ultra-fine gather materials, fine powder, macromolecule emulsion, water reducer, defoamer and fiber
With 100:(150-300): (5-50): (15-40): (0.5-1.0): (0.05-0.10): the mass ratio of (0.02-0.08) weighs；
2) batch mixing: by cement, ultra-fine gather materials, fine powder and fiber join high-speed stirred container in carry out dry mixing 1-2min,
It is subsequently adding the macromolecule emulsion that weighs and continues mix 1-2min, add water reducer and defoamer and obtain newly mix resistance to shear agitation
High voltage power transmission pipeline material (macro-defect-free cement concrete)；
In such scheme, described shear agitation speed is 100-200rpm, and the time is 4-5min.
By the high voltage tolerant input electric pipe materials application prepared as stated above in preparing high voltage tolerant input electric pipe material, concrete steps are such as
Under: power transfer conduit internal transmission of electricity metal tube and shielding protection layer are installed, use vacuum pumping pump feed technique by the cement concrete of preparation
Being pressed into bottom power transfer conduit, at pipeline top, extraction air keeps negative pressure 0.2Mpa, takes tube wall vibration device to get rid of slurry simultaneously
Bubble in body, it is ensured that the degree of compaction that cement concrete is good, supports through 6-12 hour room temperature negative pressure and 12-24 hour 80 DEG C of normal pressures
After protecting, two ends use insulating resin to seal to obtain the electric pipe of resistance to high voltage tolerant input material.
In such scheme, described shielding protection layer can use polyethylene, crosslinked polyethylene, polrvinyl chloride, cross-linked polrvinyl chloride,
Rubber edge sheath to the greatest extent etc..
The mechanism of the present invention is:
The present invention ensures the insulating properties of its excellence by the compactness and water absorption controlling pipeline power transmission material: by optimizing water
Mud particle grading distribution district, is allowed to into the interval distribution of bifurcation (or tri-state, four states), and the dense skeleton forming gelling system is piled up,
Reduce aquation water requirement, make water-cement ratio be less than 0.25；Use macromolecule emulsion replacing whole mixing water and flyash, silicon simultaneously
The fine fillers such as lime stone, mica powder or higher territory improve the interfacial transition zone compact structure of concrete, after reducing hydrated cementitious
The solution hole number stayed；Simultaneously in the case of the most additionally adding water, the emulsion polymerization participation cement water that insulation is excellent
Change the moisture in reactive absorption emulsion, promote the solidification crosslinking of high molecular polymer breakdown of emulsion, form-polymerinorganic gelling the material that gathers materials
The coalition of material；Form thin polymer film after polymer dehydration solidification and effectively block the transmission of power transfer conduit material internal solution hole
Passage, it is ensured that the insulating properties of power transfer conduit material in high voltage environment；Defoamer contributes to dissolving and draws during stirring molding
The air entered, substantially reduces system air bubble content, it is ensured that the compactness of whole system；Use negative-pressure vacuum and pumping note simultaneously
Pressure technique, molding uses room temperature negative pressure and high-temperature pressure maintenance after completing, it is ensured that power transfer conduit material is in whole blanks and moulding and conserving process
Middle without outside air enter, last pipe ends insulating resin encapsulation process, whole process technique the most additionally add water and with the external world
Moisture content is contactless, and shielding protection layer and two ends insulating resin layer have effectively intercepted the entrance of outside moisture；It addition, filler is all right
Subparticipation hydrated cementitious, plays secondary hydration effect, reduces system free water content, improves the interface of Behavior of Hardened Cement Paste transition region
Structure, beneficially concrete integral structure stability and compactness, improve anti-permeability performance.
The present invention by reasonably composition and technological design, make high voltage tolerant input electric pipe material (PCC) of preparation reach organic absolutely
The dielectric strength of edge material 80-100%, heat conductivity increases to more than 1.0W/mK simultaneously, has high intensity, high insulation, resistance to
The advantages such as high temperature, easy heat radiation, good endurance, wear-resisting, resistance to chemical attack, high permeability resistant, high elastic modulus, defeated for pipeline
Insulating barrier packing material between electric conductor, and production cost can be significantly reduced.Prepared by tradition organic insulation and the present invention
The production cost of high voltage tolerant input electric pipe material is shown in Table 1.
Table 1
Compared with prior art, the invention have the benefit that
1) dielectric strength of high voltage tolerant input electric pipe material of the present invention is up to 15Kv/mm, stable operating voltage up to 35Kv,
Continual and steady operating temperature is more than 90 DEG C, and insulated working can reach 160 DEG C in short-term, and the high pressure resistant transmission of electricity of preparation under natural environment
Pipe element will not ftracture and efflorescence.
2) this high voltage tolerant input electric pipe material can significantly improve insulation system heat transfer, heat conduction level, and heat conductivity is by traditional
0.01-0.5W/m K brings up to 1.3-1.7W/m K, and heat-resisting quantity, ageing-resistant performance are more excellent.
3) this high voltage tolerant input electric pipe material can reduce insulant cost, and its insulating properties reach tradition organic insulation
80-100%, specific insulation can reach 1010-1011Ω·cm；High voltage tolerant input electric pipe material is used to replace traditional organic insulation
Material, metal enclosed gas insulating material and polymer concrete advantageously reduce power carrying wires road and run and maintenance cost,
Improve overall structure durability.
4) this high voltage tolerant input electric pipe material and transmission of electricity metal tube, shielding protection layer adhesion strength height, swell-shrink coefficient is little, is difficult to out
Existing delamination splitting problem, the high voltage tolerant input electric pipe of preparation can be used for 35kV high-tension electricity conveying engineering.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention 1 gained high voltage tolerant input electric pipe.
Wherein, 1 is transmission of electricity metal tube, and 2 is high voltage tolerant input electric pipe material, and 3 is shielding protection layer.
Detailed description of the invention
In order to be more fully understood that the present invention, it is further elucidated with present disclosure below in conjunction with embodiment, but the present invention not only office
It is limited to the following examples.
As no specific instructions, the reagent of employing is commercially available chemical reagent or industrial products to following example.
In following example, described ultra-fine gather materials be ten thousand river quartz Development Co., Ltds produce glass sand, particle size range
0.1-0.01mm, SiO2Effective content is more than 99.9%, Fe2O3Content is less than 0.001%；Described water reducer is Jiangsu Bo Tesheng
The YJ series of high efficiency water reducer produced, solid content is 25%, and water-reducing rate is 26%；Described defoamer is that Hefei ten thousand becomes environmental protection science and technology
The BYC-014A Polyether Modified Polysiloxanes Defoaming Agent that company limited produces, active matter effective content is more than 18%.
Embodiment 1
A kind of high voltage tolerant input electric pipe material, its preparation method comprises the following steps:
1) raw material weighs: by cement, ultra-fine gather materials, fine powder, macromolecule emulsion, water reducer, defoamer and fiber with
100:280:6:30:0.6:0.07:0.04 mass ratio weigh, wherein cement selection 52.5R Portland cement, its particle diameter
Meeting 80-100 μm and account for the 60% of gross mass (cement gross mass), 1-20 μm accounts for the 20% of gross mass (cement gross mass),
Remainder is mass percent shared by other particle diameters；Fine powder selects wollastonite；Macromolecule emulsion selects Styrene And Chloroalkyl Acrylates
Ester emulsion；Polypropylene fibre selected by fiber.
2) batch mixing: by cement, ultra-fine gather materials, fine powder and fiber add high-speed stirred container in carry out dry mixing 1min, so
The macromolecule emulsion that rear addition weighs continues mix 2min, adds water reducer and defoamer and carries out (150rpm) shearing at a high speed
Stirring 5min obtains the high voltage tolerant input electric pipe material newly mixed.
By the present embodiment gained high voltage tolerant input electric pipe materials application in assembling high voltage tolerant input electric pipe, specifically comprise the following steps that installation
Transmission of electricity metal tube within power transfer conduit and shielding protection layer (crosslinked polyethylene edge sheath to the greatest extent), use vacuum pumping pump feed technique to make
Standby cement concrete is pressed into bottom power transfer conduit, and at pipeline top, extraction air keeps negative pressure 0.2Mpa, takes certain simultaneously
Tube wall vibration device get rid of the bubble in slurry, it is ensured that the degree of compaction that cement concrete is good, through 8 hours room temperature negative pressure and 20
After hour 80 DEG C of ordinary pressure curings, two ends insulating resin seals to obtain described high voltage tolerant input electric pipe (structural representation is shown in Fig. 1).
The performance test results of the present embodiment gained high voltage tolerant input electric pipe material is shown in Table 2.
Embodiment 2
A kind of high voltage tolerant input electric pipe material, its preparation method comprises the following steps:
1) raw material weighs: by cement, ultra-fine gather materials, fine powder, macromolecule emulsion, water reducer, defoamer and fiber with
The mass ratio of 100:160:40:19:0.8:0.06:0.05 weighs, wherein cement selection 42.5 Portland cement, its particle diameter
Meeting 80-100 μm and account for the 65% of gross mass (cement gross mass), 1-20 μm accounts for the 12% of gross mass (cement gross mass),
Remainder is mass percent shared by other particle diameters；Fine powder selects mica powder；Macromolecule emulsion is by ethylene acid esters and propylene
Acid esters mixes with the mass ratio of mass ratio 1:1；Basalt fibre selected by fiber.
2) batch mixing: by cement, ultra-fine gather materials, fine powder and fiber add high-speed stirred container in carry out dry mixing 2min, so
The macromolecule emulsion that rear addition weighs continues mix 1min, adds water reducer and defoamer and carries out (120rpm) shearing at a high speed
Stirring 4min obtains the high voltage tolerant input electric pipe material newly mixed.
By the present embodiment gained high voltage tolerant input electric pipe materials application in assembling high voltage tolerant input electric pipe, specifically comprise the following steps that installation
Transmission of electricity metal tube within power transfer conduit and shielding protection layer (polrvinyl chloride edge sheath to the greatest extent), use vacuum pumping pump feed technique to prepare
Cement concrete be pressed into bottom power transfer conduit, pipeline top extraction air keep negative pressure 0.2Mpa, take certain simultaneously
Tube wall vibration device gets rid of the bubble in slurry, it is ensured that the degree of compaction that cement concrete is good, through 12 hours room temperature negative pressure and 24
After hour 80 DEG C of ordinary pressure curings, two ends insulating resin seals to obtain described high voltage tolerant input electric pipe (structure is with embodiment 1).
The performance test results of the present embodiment gained high voltage tolerant input electric pipe material is shown in Table 2.
Embodiment 3
A kind of high voltage tolerant input electric pipe material, its preparation method comprises the following steps:
1) raw material weighs: by cement, ultra-fine gather materials, fine powder, macromolecule emulsion, water reducer, defoamer and fiber with
100:220:18:16:0.5:0.05:0.07 mass ratio weigh, wherein cement selection 52.5R sulphate aluminium cement, its particle diameter is full
Foot 80-100 μm accounts for the 68% of gross mass (cement gross mass), and 1-20 μm accounts for the 18% of gross mass (cement gross mass), surplus
Remaining part is divided into mass percent shared by other particle diameters；Fine powder is mixed with the mass ratio of 3:1 by mica powder and metakaolin；
Macromolecule emulsion aqueous epoxy resins；Polyethylene fibre selected by fiber.
2) batch mixing: by cement, ultra-fine gather materials, fine powder and fiber add high-speed stirred container in carry out dry mixing 2min, so
The macromolecule emulsion that rear addition weighs continues mix 2min, adds water reducer and defoamer and carries out (180rpm) shearing at a high speed
Stirring 4min obtains the high voltage tolerant input electric pipe material (macro-defect-free cement concrete) newly mixed.
By the present embodiment gained high voltage tolerant input electric pipe materials application in assembling high voltage tolerant input electric pipe, specifically comprise the following steps that installation
Transmission of electricity metal tube within power transfer conduit and shielding protection layer (polyethylene edge sheath to the greatest extent), use vacuum pumping pump feed technique by preparation
Cement concrete is pressed into bottom power transfer conduit, and at pipeline top, extraction air keeps negative pressure 0.2Mpa, takes certain pipe simultaneously
Wall vibrations device got rid of the bubble in slurry, it is ensured that the degree of compaction that cement concrete is good, through 7 hours room temperature negative pressure and 16 hours
After 80 DEG C of ordinary pressure curings, two ends insulating resin seals to obtain described high voltage tolerant input electric pipe (structure is with embodiment 1).
The performance test results of the present embodiment gained high voltage tolerant input electric pipe material is shown in Table 2.
Embodiment 4
A kind of high voltage tolerant input electric pipe material, its preparation method comprises the following steps:
1) raw material weighs: by cement, ultra-fine gather materials, fine powder, macromolecule emulsion, water reducer, defoamer and fiber with
100:260:10:35:0.9:0.08:0.08 mass ratio weigh, wherein cement selection 42.5R sulphate aluminium cement, its particle diameter is full
Foot 100-120 μm accounts for the 55% of gross mass (cement gross mass), and 10-15 μm accounts for the 20% of gross mass (cement gross mass),
1-4 μm accounts for the 4% of gross mass (cement gross mass), and remainder is mass percent shared by other particle diameters；Fine powder is selected
Flyash；Macromolecule emulsion is mixed with the mass ratio of 1:1 by styrene-butadiene latex and propyl benzene latex；Fiber by basalt fibre and
Vinal mixes with the mass ratio of 1:1.
2) batch mixing: by cement, ultra-fine gather materials, fine powder and fiber add high-speed stirred container in carry out dry mixing 2min, so
The macromolecule emulsion that rear addition weighs continues mix 1min, adds water reducer and defoamer and carries out (120rpm) shearing at a high speed
Stirring 4min obtains the high voltage tolerant input electric pipe material (macro-defect-free cement concrete) newly mixed.
By the present embodiment gained high voltage tolerant input electric pipe materials application in assembling high voltage tolerant input electric pipe, specifically comprise the following steps that installation
Transmission of electricity metal tube within power transfer conduit and shielding protection layer (rubber edge sheath to the greatest extent), use vacuum pumping pump feed technique by the water of preparation
Cement concrete is pressed into bottom power transfer conduit, and at pipeline top, extraction air keeps negative pressure 0.2Mpa, takes certain tube wall simultaneously
The bubble in slurry got rid of by vibrating device, it is ensured that the degree of compaction that cement concrete is good, through 10 hours room temperature negative pressure and 20 hours
After 80 DEG C of ordinary pressure curings, two ends insulating resin seals to obtain described high voltage tolerant input electric pipe (structure is with embodiment 1).
The performance test results of the present embodiment gained high voltage tolerant input electric pipe material is shown in Table 2.
Embodiment 5
A kind of high voltage tolerant input electric pipe material, its preparation method comprises the following steps:
1) raw material weighs: by cement, ultra-fine gather materials, fine powder, macromolecule emulsion, water reducer, defoamer and fiber with
100:200:48:18:0.7:0.06:0.09 mass ratio weigh, wherein cement selection CA-60 aluminate cement, its particle diameter is full
Foot 100-120 μm accounts for the 60% of gross mass (cement gross mass), and 10-15 μm accounts for the 22% of gross mass (cement gross mass),
1-4 μm accounts for the 3% of gross mass (cement gross mass), and remainder is mass percent shared by other particle diameters；Fine powder is by powder
Coal ash and wollastonite mix with the mass ratio of 4:1；Macromolecule emulsion is by acrylic acid ester emulsion and styrene-acrylate emulsion
Mix with the mass ratio of 1:2；Vinal selected by fiber.
2) batch mixing: by cement, ultra-fine gather materials, fine powder and fiber add high-speed stirred container in carry out dry mixing 1min, so
The macromolecule emulsion that rear addition weighs continues mix 1min, adds water reducer and defoamer and carries out (150rpm) shearing at a high speed
Stirring 4min obtains the high voltage tolerant input electric pipe material (macro-defect-free cement concrete) newly mixed.
By the present embodiment gained high voltage tolerant input electric pipe materials application in assembling high voltage tolerant input electric pipe, specifically comprise the following steps that installation
Transmission of electricity metal tube within power transfer conduit and shielding protection layer (crosslinked polyethylene edge sheath to the greatest extent), use vacuum pumping pump feed technique to make
Standby cement concrete is pressed into bottom power transfer conduit, and at pipeline top, extraction air keeps negative pressure 0.2Mpa, takes certain simultaneously
Tube wall vibration device get rid of the bubble in slurry, it is ensured that the degree of compaction that cement concrete is good, through 7 hours room temperature negative pressure and 13
After hour 80 DEG C of ordinary pressure curings, two ends insulating resin seals to obtain described high voltage tolerant input electric pipe (structure is with embodiment 1).
The performance test results of the present embodiment gained high voltage tolerant input electric pipe material is shown in Table 2.
Embodiment 6
A kind of high voltage tolerant input electric pipe material, its preparation method comprises the following steps:
1) raw material weighs: by cement, ultra-fine gather materials, fine powder, macromolecule emulsion, water reducer, defoamer and fiber with
100:180:45:28:0.6:0.06:0.03 mass ratio weigh, wherein cement selection CA-70 aluminate cement, its particle diameter is full
Foot 80-100 μm accounts for the 50% of gross mass (cement gross mass), and 1-20 μm accounts for the 14% of gross mass (cement gross mass), surplus
Remaining part is divided into mass percent shared by other particle diameters；Fine powder is mixed with the mass ratio of 5:1 by flyash and metakaolin；
Macromolecule emulsion is by selecting aqueous epoxy resins；Fiber is mixed with the mass ratio of 1:1 by polyethylene fiber peacekeeping polypropylene fibre.
2) batch mixing: by cement, ultra-fine gather materials, fine powder and fiber add high-speed stirred container in carry out dry mixing 2min, so
The macromolecule emulsion that rear addition weighs continues mix 1min, adds water reducer and defoamer and carries out (120rpm) shearing at a high speed
Stirring 5min obtains the high voltage tolerant input electric pipe material (macro-defect-free cement concrete) newly mixed.
By the present embodiment gained high voltage tolerant input electric pipe materials application in assembling high voltage tolerant input electric pipe, specifically comprise the following steps that installation
Transmission of electricity metal tube within power transfer conduit and shielding protection layer (crosslinked polyethylene edge sheath to the greatest extent), use vacuum pumping pump feed technique to make
Standby cement concrete is pressed into bottom power transfer conduit, and at pipeline top, extraction air keeps negative pressure 0.2Mpa, takes certain simultaneously
Tube wall vibration device get rid of the bubble in slurry, it is ensured that the degree of compaction that cement concrete is good, through 8 hours room temperature negative pressure and 14
After hour 80 DEG C of ordinary pressure curings, two ends insulating resin seals to obtain described high voltage tolerant input electric pipe (structure is with embodiment 1).
The performance test results of the present embodiment gained high voltage tolerant input electric pipe material is shown in Table 2.
Embodiment 7
A kind of high voltage tolerant input electric pipe material, its preparation method comprises the following steps:
1) raw material weighs: by cement, ultra-fine gather materials, fine powder, macromolecule emulsion, water reducer, defoamer and fiber with
The mass ratio of 100:250:25:25:0.7:0.09:0.09 weighs, and wherein cement is by aluminate cement and 42.5R sulphate aluminium cement
Mixing with the mass ratio of 2:1, its particle diameter meets 110-130 μm and accounts for the 35% of gross mass (cement gross mass), 40-60 μm
Accounting for the 25% of gross mass (cement gross mass), 8-15 μm accounts for the 12% of gross mass (cement gross mass), and 0.5-4 μm accounts for total matter
The 4% of amount (cement gross mass), remainder is mass percent shared by other particle diameters；Fine powder is by wollastonite and mica powder
Mix with the mass ratio of 4:1；Macromolecule emulsion by styrene-acrylate emulsion and vinyl acetate emulsion with the matter of 3:1
Amount ratio mixes；Basalt fibre selected by fiber.
2) batch mixing: by cement, ultra-fine gather materials, fine powder and fiber add high-speed stirred container in carry out dry mixing 1min, so
The macromolecule emulsion that rear addition weighs continues mix 1min, adds water reducer and defoamer and carries out (180rpm) shearing at a high speed
Stirring 5min obtains the high voltage tolerant input electric pipe material (macro-defect-free cement concrete) newly mixed.
By the present embodiment gained high voltage tolerant input electric pipe materials application in assembling high voltage tolerant input electric pipe, specifically comprise the following steps that installation
Transmission of electricity metal tube within power transfer conduit and shielding protection layer (cross-linked polrvinyl chloride edge sheath to the greatest extent), employing vacuum pumping pump feed technique will
The cement concrete of preparation is pressed into bottom power transfer conduit, and at pipeline top, extraction air keeps negative pressure 0.2Mpa, takes one simultaneously
Fixed tube wall vibration device gets rid of the bubble in slurry, it is ensured that the degree of compaction that cement concrete is good, through 8 hours room temperature negative pressure and
After 14 hours 80 DEG C of ordinary pressure curings, two ends insulating resin seals to obtain described high voltage tolerant input electric pipe (structure is with embodiment 1).
The performance test results of the present embodiment gained high voltage tolerant input electric pipe material is shown in Table 2.
Embodiment 8
A kind of high voltage tolerant input electric pipe material, its preparation method comprises the following steps:
1) raw material weighs: by cement, ultra-fine gather materials, fine powder, macromolecule emulsion, water reducer, defoamer and fiber with
100:290:30:38:0.7:0.09:0.07 mass ratio weigh, wherein cement is common by CA-70 aluminate cement and 42.5R
Portland cement mixes with the mass ratio of 2:1, and its particle diameter meets 100-120 μm and accounts for the 62% of gross mass (cement gross mass),
10-15 μm accounts for the 16% of gross mass (cement gross mass), and 1-4 μm accounts for the 3% of gross mass (cement gross mass), remainder
Mass percent shared by other particle diameters；Fine powder selects metakaolin；Macromolecule emulsion is by vinyl acetate emulsion and ethylene
Acid esters emulsion mixes with the mass ratio of 1:2；Fiber by polyacrylonitrile fibre and basalt fibre so that the mass ratio of 1:1 mixes
Become.
2) batch mixing: by cement, ultra-fine gather materials, fine powder and fiber add high-speed stirred container in carry out dry mixing 2min, so
The macromolecule emulsion that rear addition weighs continues mix 2min, adds water reducer and defoamer and carries out (150rpm) shearing at a high speed
Stirring 4min obtains the high voltage tolerant input electric pipe material (macro-defect-free cement concrete) newly mixed.
By the present embodiment gained high voltage tolerant input electric pipe materials application in assembling high voltage tolerant input electric pipe, specifically comprise the following steps that installation
Transmission of electricity metal tube within power transfer conduit and shielding protection layer (polyethylene edge sheath to the greatest extent), use vacuum pumping pump feed technique by preparation
Cement concrete is pressed into bottom power transfer conduit, and at pipeline top, extraction air keeps negative pressure 0.2Mpa, takes certain pipe simultaneously
Wall vibrations device got rid of the bubble in slurry, it is ensured that the degree of compaction that cement concrete is good, through 7 hours room temperature negative pressure and 10 hours
After 80 DEG C of ordinary pressure curings, two ends insulating resin seals to obtain described high voltage tolerant input electric pipe (structure is with embodiment 1).
The performance test results of the present embodiment gained high voltage tolerant input electric pipe material is shown in Table 2.
High voltage tolerant input electric pipe material described in embodiment 1～8 is carried out dielectric breakdown strength (dielectric strength, Kv/mm), heat-resisting etc.
The performance tests such as level, heat conductivity, test first 105 DEG C and dry sample 24h, reference standard GBT 1408-2006 " insulant
Electrical strength test method ", GBT 11021-2014 " electric insulation thermostability and method for expressing test result ", the results are shown in Table 2.
The performance test results of table 2 embodiment 1～8 gained high voltage tolerant input electric pipe material
According to data in table 1 it can be seen that high voltage tolerant input electric pipe material property prepared by employing the method is up to state standards and wants
Asking, dielectric strength >=15Kv/mm, temperature classification reaches F grade standard, concrete crushing strength >=55Mpa, and heat conductivity >=
1.2W/m K, is significantly better than full stress-strain insulated power cable, and production cost is lower.
In sum, high voltage tolerant input electric pipe material of the present invention has intensity insulation high, high, high temperature resistant, easy heat radiation, resistance to
Property waits well excellent properties for a long time, meets the property indices that standard specifies, beneficially practical engineering application.
The foregoing is only the preferred embodiment of the present invention, it is noted that for the person of ordinary skill of the art,
On the premise of conceiving without departing from the invention, making some modifications and variations, these broadly fall into protection scope of the present invention.
Claims (10)
1. a high voltage tolerant input electric pipe material, it by cement, ultra-fine gather materials, fine powder, macromolecule emulsion, water reducer,
Defoamer and fiber are with 100:(150-300): (5-50): (15-40): (0.5-1.0): (0.05-0.10): (0.02-0.08) mass ratio mixing and
Become.
High voltage tolerant input electric pipe material the most according to claim 1, it is characterised in that described cement be portland cement,
One or more in aluminate cement, sulphate aluminium cement.
Cement the most according to claim 2, it is characterised in that the particle size range of described cement meets: 1-20 μm accounts for
The 10-20% of gross mass, 80-100 μm accounts for the 50-70% of gross mass；Or meet: 1-4 μm accounts for the 2-5% of gross mass, 10-15 μm
Accounting for the 15-25% of gross mass, 100-120 μm accounts for the 50-65% of gross mass；Or meet: 0.5-4 μm accounts for the 2-5% of gross mass,
8-15 μm accounts for the 7-15% of gross mass, and 40-60 μm accounts for the 20-30% of gross mass, and 110-130 μm accounts for the 30-40% of gross mass.
High voltage tolerant input electric pipe material the most according to claim 1, it is characterised in that described ultra-fine gather materials for high purity quartz
Sand, SiO2Effective content is more than 99.9%, Fe2O3Content is less than 0.001%.
High voltage tolerant input electric pipe material the most according to claim 1, it is characterised in that described fine powder be flyash,
One or more in wollastonite, mica powder, metakaolin.
High voltage tolerant input electric pipe material the most according to claim 1, it is characterised in that described macromolecule emulsion is epoxy breast
Liquid, ethylene acid esters emulsion, acrylic acid ester emulsion, styrene-acrylate emulsion, vinyl acetate acid esters emulsion, vinylacetate,
One or more in styrene-butadiene latex, propyl benzene latex.
High voltage tolerant input electric pipe material the most according to claim 1, it is characterised in that described water reducer is that polycarboxylic-acid is high
Effect water reducer, solid contains for 20-25%, and water-reducing rate is 25-27%.
High voltage tolerant input electric pipe material the most according to claim 1, it is characterised in that described fiber be polyethylene fibre,
One or more in polypropylene fibre, polyacrylonitrile fibre, vinal, basalt fibre.
9. according to the preparation method of high voltage tolerant input electric pipe material described in any one of claim 1～8, it is characterised in that include with
Lower step:
1) raw material weighs: by cement, ultra-fine gather materials, fine powder, macromolecule emulsion, water reducer, defoamer and fiber with
100:(150-300): (5-50): (15-40): (0.5-1.0): (0.05-0.10): the mass ratio of (0.02-0.08) weighs；
2) batch mixing: by cement, ultra-fine gather materials, fine powder and fiber add high-speed stirred container in carry out dry mixing 1-2min, so
Macromolecule emulsion that rear addition weighs continues mix 1-2min, adds water reducer and defoamer carries out shear agitation and obtains newly mix resistance to
High voltage power transmission pipeline material.
Preparation method the most according to claim 9, it is characterised in that described shear agitation speed is 100-200rpm, time
Between be 4-5min.
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| CN105367008A (en) * | 2015-12-15 | 2016-03-02 | 湖北大学 | Emulsifier-free styrene-acrylic emulsion polymer concrete and preparation method thereof |
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| CN105367008A (en) * | 2015-12-15 | 2016-03-02 | 湖北大学 | Emulsifier-free styrene-acrylic emulsion polymer concrete and preparation method thereof |
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| 梁旭明: "超大容量输电管线的研制与应用", 《智能电网》 * |
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| CN113871057A (en) * | 2021-08-13 | 2021-12-31 | 江苏上上电缆集团有限公司 | Manufacturing method of F-level temperature-resistant flexible battery acid-resistant high-voltage cable |
| CN113871057B (en) * | 2021-08-13 | 2023-08-22 | 江苏上上电缆集团有限公司 | Manufacturing method of F-level temperature-resistant flexible battery acid-resistant high-voltage cable |
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