CN106531376A - Preform, insulator core rod and preparation method - Google Patents
Preform, insulator core rod and preparation method Download PDFInfo
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- CN106531376A CN106531376A CN201610941317.4A CN201610941317A CN106531376A CN 106531376 A CN106531376 A CN 106531376A CN 201610941317 A CN201610941317 A CN 201610941317A CN 106531376 A CN106531376 A CN 106531376A
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- glass fiber
- core rod
- inner core
- woven cloth
- fiber woven
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B19/00—Apparatus or processes specially adapted for manufacturing insulators or insulating bodies
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/14—Supporting insulators
- H01B17/145—Insulators, poles, handles, or the like in electric fences
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/38—Fittings, e.g. caps; Fastenings therefor
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- Insulating Bodies (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
The invention discloses a preform, an insulator core rod and a preparation method. The preform comprises an inner core rod and a winding layer wound on the outer surface of the inner core rod, wherein the winding layer is formed by winding glass fiber woven cloth which is 0.5-0.7mm in thickness; the gram weight of the glass fiber woven cloth is 50-1500g/m<2>; and the fineness of a glass fiber warp is 500-9600tex. According to the preform disclosed by the invention, the insulator core rod with relatively high strength can be obtained. Furthermore, the preparation method is reasonable in procedure, high in production efficiency and low in energy consumption.
Description
Technical field
The present invention relates to a kind of power industry power transmission and transformation precast body, core rod of insulator and preparation method, more particularly to one
Plant precast body, core rod of insulator and the preparation method of major diameter.
Background technology
With extra high voltage line in China increasing year by year, the consumption of power transmission and transformation support insulator is consequently increased.It is existing
The support insulator for having power transmission and transformation includes：Full porcelain type, porcelain core add the additional silicone rubber umbrella of silicon rubber umbrella skirt type, composite inner core
Skirt type.There is weight weight in full porcelain strut insulator, fracture and brittle failure easily occur, and length increasing etc. after electric pressure raising lacks
Fall into.It is bonding with ceramic core loosely that porcelain core adds silicon rubber umbrella skirt t shore insulator to there is external shed silastic material, produces bubble
Phenomenon, affect product electric property and the life-span.With the raising of power transmission and transformation electric pressure, the additional silicon rubber of composite inner core
The consumption accounting of glue full skirt t shore insulator increases therewith.
The plug of the additional silicon rubber umbrella skirt t shore insulator of composite inner core is made using composite, due to diameter
It is larger, for pultrude process it is difficult to a pultrusion.The molding mode that the plug of support insulator is adopted at present is mostly various
The little drawing and extruding bar of specification is bundled carries out overall perfusion, but this kind of technique is present due to many thinner inner core rod structures
Adhesive linkage is excessive, occupies larger area ratio in the cross-sectional area of plug, in solidification process it is internal produce it is larger interior
Stress, the unbalanced stress defect such as cause inside to crack, is extremely difficult to preferable using effect in actual use.Pillar
The plug of insulator can also molding in the following way：Internal is pultrusion plug, and outer layer is wound several times.This molding
Although mode can meet actual operation requirements, production efficiency is relatively low, and outer layer need to carry out repeatedly winding and need repeatedly solidification,
It is more for the procedure calls in winding process, and it is larger to consume energy, and substantially increases the manufacturing cost of product.Additionally, fiber exists
There is certain abrasion substantially reduce the mechanical property of plug in winding process.CN1731539A discloses a kind of glass fibre leaching
The preparation method of stain resin base wound-type composite insulator core：By resin based sols of the glass fibre after fusing, turning
150 revs/min of speed stirs；The continuous winding solidify afterwards molding at high temperature of glass fibre and epoxy resin based sols.Above-mentioned side
Method needs repeatedly to wind, and low production efficiency, waste of material are big.CN101740185A discloses major diameter composite insulator inner core rod
Preparation method：Choose solid pultrusion insulation mandrel diameter≤130mm；Mandrel outer Surface Machining is coarse, and outer surface is wiped with acetone
Wash clean, is put into constant temperature in baking oven；Rod outer surface is coated with 2% anhydrous alcohol solution, places into constant temperature 1 hour in baking oven；Tree
The configuration of fat glue is weighed in proportion and pours vacuum stirring 20 minutes in vacuum mixer into, stands 50 minutes；The inner core that will be processed
Rod is installed in numerical control winding machine and starts winding, and machine to be wound is wound into design size；Then evacuation resin by injection glue；Injecting glue
Finish closing two ends valve be put into curing oven in heat it is staged curing.Said method still prepares plug using canoe, makes
Obtain glass fibre axially to exist compared with mitre with inner core rod, the strength and stiffness of final products are not high.Additionally, the table of said method
Face treatment process is tediously long, curing process is unreasonable, still has further improved space.
Therefore, in the urgent need to a kind of precast body, core rod of insulator and preparation method, its can effectively improve production efficiency and
Power consumption is low, it is possible to produce the high composite post insulator of bending property.
The content of the invention
It is an object of the present invention to provide a kind of core rod of insulator precast body, which can be used for producing bending property
High composite post insulator.
Further object is that providing a kind of preparation method of core rod of insulator precast body, its operation is reasonable,
Production efficiency is high, and energy consumption is low.
It is yet a further object of the present invention to provide a kind of preparation method of core rod of insulator, which quickly can produce big straight
The core rod of insulator in footpath, its operation rationally, and can avoid waste of material phenomenon such that it is able to reduce production cost.
The application is adopted the following technical scheme that and realizes above-mentioned purpose.
The present invention provides a kind of core rod of insulator precast body, and described precast body includes inner core rod and wound on the inner core rod
The winding layer of outer surface；Described winding layer is formed by the glass fiber woven cloth winding that thickness is 0.5～0.7mm, described
Glass fiber woven cloth includes the angle between the central shaft of glass fiber warps, the glass fiber warps and the inner core rod
For 0～3 °；The fabric width of the glass fiber woven cloth is close to the length of the inner core rod, the volume of the glass fiber woven cloth
It is substantially zero around angle, described winding angle refers to the helical angle of the weft yarn of glass fiber woven cloth；Wherein, described glass fibers
The grammes per square metre of dimension woven cloth is 500～1500g/m2, the fiber number of described glass fiber warps is 500～9600tex.
The precast body of the present invention includes inner core rod and winding layer.The winding layer wound on the inner core rod outer surface, and with it is interior
Plug is brought into close contact.The winding layer is formed by the glass fiber woven cloth winding that thickness is 0.5～0.7mm.In the present invention, should
The thickness of glass fiber woven cloth can be 0.5～0.7mm, preferably 0.55～0.65mm, more preferably 0.58～0.62mm.
The glass fiber woven cloth of the present invention includes glass fiber warps, the central shaft of the glass fiber warps and the inner core rod it
Between angle be 0～3 °；Preferably 0～1 °.The glass fiber woven cloth of the present invention can also include weft yarn, and which is that weaving is fine
Dimension.The weft yarn of the present invention can be selected from terylene, nylon or brocade dragon；Preferably terylene.The width of the glass fiber woven cloth of the present invention
The wide length with the inner core rod is close to, and the winding angle of the glass fiber woven cloth is substantially zero, and described winding angle is
Refer to the helical angle of the weft yarn of glass fiber woven cloth.In actual production process, it is impossible to ensure that winding angle is definitely zero, thus this
Winding angle is defined to " being substantially zero " by invention.
Precast body of the invention, the grammes per square metre of described glass fiber woven cloth can be 500～1500g/m2, it is described
The fiber number of glass fiber warps can be 500～9600tex.Preferably, the grammes per square metre of described glass fiber woven cloth is 600
～800g/m2, the fiber number of described glass fiber warps is 1000～2000tex.It is highly preferred that described is fiberglass braided
The grammes per square metre of cloth is 650～750g/m2, the fiber number of described glass fiber warps is 1100～1800tex.
Precast body of the invention, it is preferable that on the basis of the weight of the precast body, the glass fiber woven cloth
Account for 65wt%～80wt%, more preferably 70wt%～75wt%.
Precast body of the invention, it is preferable that the glass fiber woven cloth be selected from one-way glass fibre knitting cloth or
Orthogonal glass fiber woven cloth；Described inner core rod is pultrusion inner core rod.An embodiment of the invention, the glass
Fibre knitting cloth is one-way glass fibre knitting cloth；Described inner core rod is pultrusion inner core rod.So-called one-way glass fibrage
Cloth is represented by glass fiber warps and textile fabric weft yarn（Such as terylene）The glass fiber woven cloth of formation.
Precast body of the invention, it is preferable that the outer surface of described inner core rod has screw thread, the depth of the screw thread
For 0.3mm～0.6mm, the pitch of the screw thread is 1mm～6mm.It is highly preferred that the depth of the screw thread be 0.35mm～
0.6mm, the pitch of the screw thread is 3mm～6mm.An embodiment of the invention, the depth of the screw thread is 0.5mm
～0.55mm, the pitch of the screw thread is 3.5mm～5.5mm.
Precast body of the invention, it is preferable that a diameter of 50～200mm of described inner core rod, described winding layer
Thickness be 80～120mm；It is highly preferred that a diameter of 80～130mm of described inner core rod, the thickness of described winding layer is
85～110mm.An embodiment of the invention, a diameter of 100～105mm of described inner core rod, described winding
The thickness of layer is 90～100mm.
Precast body of the invention, a diameter of 270～350mm of the precast body；Preferably 280～300mm.
The present invention also provides a kind of preparation method of core rod of insulator precast body, comprises the steps：
1）Surface treatment step：The outer surface of inner core rod is carried out into blasting treatment, then using volatile organic solvent
It is surface-treated, so as to form the inner core rod after surface treatment；The pressure of the compressed air adopted by the blasting treatment for
0.4～1.0MPa, the time of the blasting treatment is 20～60min；
2）Winding steps：The glass fiber woven cloth that thickness is 0.5～0.7mm is directly wound in after surface treatment
Winding layer is formed on plug, so as to obtain precast body；
Wherein, described glass fiber woven cloth includes glass fiber warps, the glass fiber warps and the inner core
Angle between the central shaft of rod is 0～3 °；The fabric width of the glass fiber woven cloth is close to the length of the inner core rod, institute
The winding angle for stating glass fiber woven cloth is substantially zero, and described winding angle refers to the spiral of the weft yarn of glass fiber woven cloth
Angle；Wherein, the grammes per square metre of described glass fiber woven cloth is 500～1500g/m2, the fiber number of described glass fiber warps is
500～9600tex.
The preparation method of precast body of the invention, it is preferable that the volatile organic solvent is selected from acetone, wine
Essence, methanol, ether, one or more of chloroform；The pressure of the compressed air adopted by the blasting treatment for 0.6～
0.8MPa, the time of the blasting treatment is 25～35min.
The present invention also provides a kind of preparation method of core rod of insulator, comprises the steps：
1）Surface treatment step：The outer surface of inner core rod is carried out into blasting treatment, then using volatile organic solvent
It is surface-treated, so as to form the inner core rod after surface treatment；The pressure of the compressed air adopted by the blasting treatment for
0.4～1.0MPa, the time of the blasting treatment is 20～60min；
2）Winding steps：The glass fiber woven cloth that thickness is 0.5～0.7mm is directly wound in after surface treatment
Winding layer is formed on plug, so as to obtain precast body；
Wherein, described glass fiber woven cloth includes glass fiber warps, the glass fiber warps and the inner core
Angle between the central shaft of rod is 0～3 °；The fabric width of the glass fiber woven cloth is close to the length of the inner core rod, institute
The winding angle for stating glass fiber woven cloth is substantially zero, and described winding angle refers to the spiral of the weft yarn of glass fiber woven cloth
Angle；
Wherein, the grammes per square metre of described glass fiber woven cloth is 500～1500g/m2, the fibre of described glass fiber warps
Spend for 500～9600tex；
3）Vacuum injection molding step：The precast body is placed in mould, will using vacuum injection molding technique
Gradually to impregnate the plug precast body in the described mould of epoxy resin injection, so as to obtain impregnating；The molding
The relative degree of vacuum of mould is maintained at -0.08～-0.1MPa, and the injection rate of epoxy resin is 250～650g/min, asphalt mixtures modified by epoxy resin
The injection of fat is 1.5～8h with return time；
4）Curing schedule：Mould containing the impregnating is closed, being placed in solidification equipment carries out solidification process, institute
The solidification process stated can be divided into three phases, and the first stage is 4～5h of solidification at 57～60 DEG C, second stage be 67～
Solidify 5～6h at 70 DEG C, the phase III is 5～6h of solidification at 77～80 DEG C.
In core rod of insulator precast body, the preparation method of core rod of insulator in the present invention, inner core rod, the structure of winding layer
With parameter as previously mentioned（It is i.e. identical with the content of precast body product description）, repeat no more here.Below prepared by above two
Method is described together.
In the surface treatment step 1 of the present invention）In, the outer surface of inner core rod is carried out into blasting treatment.At so-called sandblasting
Reason is exactly the outer surface that sand is sprayed on inner core rod using compressed air, is roughened can the outer surface, it is possible to removed outer
The resin-rich layer on surface.Then, it is surface-treated using volatile organic solvent, the impurity of outer surface can be removed.Root
According to a specific embodiment of the present invention, the outer surface of inner core rod is carried out into blasting treatment, remove the resin-rich layer on surface simultaneously
It is roughened the outer surface of inner core rod, then the outer surface of inner core rod is scrubbed and dried with ethanol.In being so conducive to
Plug is bonding with the material of later stage molding firm.In the present invention, the volatile organic solvent can be selected from acetone, wine
Essence, methanol, ether, one or more of chloroform；The pressure of the compressed air adopted by the blasting treatment for 0.4～1MPa,
Preferably 0.6～0.8MPa, the time of the blasting treatment is 20～60min, preferably 20～40min.It is of the invention
One preferred implementation, in surface treatment step 1）In, a diameter of 100～105mm of the inner core rod；It is described volatile
Organic solvent is selected from acetone or ethanol；The pressure of the compressed air adopted by the blasting treatment for 0.6～0.8MPa, the spray
The time of sand process is 25～35min.
In the winding steps 2 of the present invention）In, by glass fiber woven cloth that thickness is 0.5～0.7mm directly wound on table
On inner core rod after the process of face, precast body is obtained.Glass fiber woven cloth, the parameter of winding method are as it was previously stated, here no longer
Repeat.
In the vacuum injection molding step 3 of the present invention）In, the precast body is placed in mould, then by molding
Mould matched moulds.Followed by vacuum injection molding technique by epoxy resin injection described mould.Epoxy resin from into
The glue-feeder injection of pattern tool, gradually impregnates the plug precast body, so as to obtain impregnating；Unnecessary epoxy resin then from into
The gum exudation mouth of pattern tool flows out.A specific embodiment of the invention, the relative degree of vacuum of the mould keep
In -0.08～-0.1MPa, the injection rate of epoxy resin is 250～650g/min, and injection and the return time of epoxy resin are
1.5～8h；Preferably, the relative degree of vacuum of the mould is maintained at -0.085～-0.095MPa, the note of epoxy resin
It is 350～450g/min to enter speed, and injection and the return time of epoxy resin are 2～6h.In the present invention, described asphalt mixtures modified by epoxy resin
One or more in following resin of fat：Bisphenol A type epoxy resin, bisphenol f type epoxy resin, many phenolic glycidyl ethers
Epoxy resin, aliphatic glycidyl ether epoxy resin.The epoxy resin of the present invention is preferably bisphenol A type epoxy resin, for example
CYD-128 epoxy resin（Hunan Province Yueyang Ba Ling petrochemical industry chemical company）.According to a preferred embodiment of the invention, it is described
Epoxy resin include 100 weight portions Hunan Province Yueyang Ba Ling petrochemical industry chemical company production CYD-128 epoxy resin, 70～
The methyl tetrahydro phthalic anhydride firming agent of 80 weight portions, Jiaxing Lian Xing new chemical materialses company limited of 0.8～1.0 weight portion produce
DMP-30 accelerator, the BYK-A530 defoamer of 0.2～0.3 weight portion（German Bi Ke chemical companies production）.
In the curing schedule 4 of the present invention）In, described solidification process can be divided into three phases, and the first stage is 57
Solidify 4～5h at～60 DEG C, second stage is 5～6h of solidification at 67～70 DEG C, and the phase III is at 77～80 DEG C to solidify 5
～6h.A specific embodiment of the invention, the first stage be at 60 DEG C solidification 4～4.5h, second stage be
Solidify 5～5.5h at 70 DEG C, the phase III is 5～5.5h of solidification at 80 DEG C.
After above-mentioned curing schedule is finished, the post processings such as the demoulding, Surface Machining can be carried out to the inner core rod after solidification, from
And form composite post insulator product.
Glass fiber woven cloth is wound inner core rod by the present invention, and by between glass fiber warps and the central shaft of inner core rod
Angle control in OK range, it is ensured that the fabric width of glass fiber woven cloth and the length of inner core rod are close to, and glass fibre
The winding angle of woven cloth is substantially zero, and is achieved in that precast body can obtain the relatively high core rod of insulator of intensity.This
Outward, rationally, production efficiency is high for the preparation method operation of precast body of the invention, and energy consumption is low；The preparation side of the insulator of the present invention
Method can quickly produce the core rod of insulator of major diameter, and its operation rationally, and can avoid waste of material phenomenon such that it is able to drop
Low production cost.
Description of the drawings
Fig. 1 is the structural representation of the pultrusion inner core rod of the present invention；
Structural representations of the Fig. 2 for 1 precast body of embodiments of the invention；
Description of reference numerals is as follows：
1- inner core rods, 2- winding layers, 3- glass fiber woven cloths.
Specific embodiment
With reference to specific embodiment, the present invention is further illustrated, but protection scope of the present invention is not limited to
This.
Below the raw material used in following examples and comparative example is described in detail：
Formulaion of epoxy resin：
| CYD-128 epoxy resin | Methyl tetrahydro phthalic anhydride | DMP-30 accelerator | BYK-A530 defoamer |
| 100 weight portions | 80 weight portions | 1.0 weight portion | 0.2 weight portion |
The performance of epoxy resin：500 centipoises are less than in 25 DEG C of viscosity.
Epoxy source material is described as follows：
| Numbering | Title | Manufacturer |
| 1 | CYD-128 epoxy resin | Hunan Province Yueyang Ba Ling petrochemical industry chemical company |
| 2 | Methyl tetrahydro phthalic anhydride | Beijing Qianmen industrial chemicals company limited |
| 3 | DMP-30 accelerator | Jiaxing Lian Xing new chemical materialses company limited |
| 4 | BYK-A530 defoamer | German Bi Ke chemical companies |
Embodiment 1
Fig. 1 is the structural representation of the pultrusion inner core rod of the present invention.The outer surface of the inner core rod of the present invention has screw thread, institute
The depth for stating screw thread is 0.5mm, and pitch is 3.5mm.Fig. 2 is the structural representation of the precast body of the present invention.The present invention's is prefabricated
Body includes inner core rod 1 and winding layer 2.A diameter of 305mm of the precast body of the present invention, a diameter of 105mm of inner core rod 1, length
For 2.5m；The thickness of winding layer 2 is 100mm.Outer surface of the winding layer 2 wound on inner core rod outer 1.Winding layer 2 is by glass fibre
The winding of woven cloth 3 is formed, and the thickness of glass fiber woven cloth 3 is 0.6mm, and fabric width is 2.5m.Glass fiber woven cloth 3 is unidirectional
Glass fiber woven cloth, between the central shaft including glass fiber warps and terylene weft yarn, glass fiber warps and inner core rod 1
Angle is 0 °；The winding angle of glass fiber woven cloth 3 is zero, and described winding angle refers to the weft yarn of glass fiber woven cloth 3
Helical angle.The grammes per square metre of glass fiber woven cloth 3 is 600g/m2, the fiber number of glass fiber warps is 1000tex, with described prefabricated
On the basis of the weight of body, the weight of glass fiber woven cloth 3 accounts for 70wt%.
The preparation method of precast body and insulator is explained in detail below.
1）The outer surface of pultrusion inner core rod is carried out into blasting treatment, the resin-rich layer of exterior surface is removed；And cleaned with ethanol
Outer surface, removes its surface impurity.
2）One-way glass fibre knitting cloth is wound to into step 1）Precast body, glass fibre is formed on inner core rod after process
About 0 ° of angle between warp thread and the central shaft of inner core rod.
3）By step 2）Obtain precast body to be placed in vacuum injection molding mould, carried out using vacuum injection technique after matched moulds
Injecting glue molding, the relative degree of vacuum of vacuum injection molding mould are maintained at -0.085MPa, and the injection rate of epoxy resin is
400g/min, injection and the return time of epoxy resin are 5h.
4）After injecting glue is finished, the gum exudation mouth of vacuum injection molding mould is closed with Jiao Kou is entered, is carried out in being put into curing oven
Solidification；Curing cycle is 60 DEG C of solidification 4h, 70 DEG C of solidification 5h, and then 80 DEG C solidify 5h.
5）After solidification is finished, carry out the demoulding, Surface Machining and form insulator product.
Products obtained therefrom is carried out into performance test, as a result referring to table 1.
Embodiment 2
Will be using a diameter of 100mm, inner core rod of the length for the inner core rod alternative embodiment 1 of 2.5m；Adopt grammes per square metre for
800g/m2, glass fiber warps fiber number for 2000tex glass fiber woven cloth alternative embodiment 1 it is fiberglass braided
Cloth, remaining condition and parameter it is same as Example 1, obtain the precast body of embodiment 2.Products obtained therefrom is carried out into performance test, is tied
Fruit is referring to table 1.
Comparative example 1
1）Choose the solid pultrusion insulation mandrel of a diameter of 105mm, long 2.5m；Its outer surface is carried out into blasting treatment, is removed
The resin-rich layer of outer surface；And outer surface is cleaned with ethanol, remove its surface impurity.
2）Wind for the first time：Before winding, winding epoxy resin is dipped in solid pultrusion insulation mandrel external coating with hair rolling
Epoxy resin.Start to wind glass fibre, winding angle is divided into two kinds：5 °, 85 °, the winding thickness accounting of two kinds of angles is 7:
1.Diameter of mandrel is wound to for the first time for 220mm, stops winding.
3）First time cured：70 DEG C of solidification 2h, 90 DEG C of solidification 2h, then 120 DEG C solidify 3h.
4）Wind for second：Plug outer surface after first time cured is carried out into blasting treatment, exterior surface is gone
Resin-rich layer；And outer surface is cleaned with ethanol, remove its surface impurity.Start second to wind, winding angle is divided into two kinds：
5 °, 85 °, the winding thickness accounting of two kinds of angles is 7:1.Diameter of mandrel is wound to for the second time for 305mm, stopping winding.
5）Second cured：70 DEG C of solidification 2h, 90 DEG C of solidification 2h, then 120 DEG C solidify 3h.
6) plug after second cured is machined, is 305mm by diameter of mandrel Vehicle Processing.
Products obtained therefrom is carried out into performance test, as a result referring to table 1.
Table 1
The present invention is not limited to above-mentioned embodiment, in the case of the flesh and blood without departing substantially from the present invention, this area skill
Any deformation that art personnel are contemplated that, improvement, replacement each fall within the scope of the present invention.
Claims (10)
1. a kind of core rod of insulator precast body, it is characterised in that described precast body includes inner core rod and wound on the inner core rod
The winding layer of outer surface；Described winding layer is formed by the glass fiber woven cloth winding that thickness is 0.5～0.7mm, described
Glass fiber woven cloth includes the angle between the central shaft of glass fiber warps, the glass fiber warps and the inner core rod
For 0～3 °；The fabric width of the glass fiber woven cloth is close to the length of the inner core rod, the volume of the glass fiber woven cloth
It is substantially zero around angle, described winding angle refers to the helical angle of the weft yarn of glass fiber woven cloth；
Wherein, the grammes per square metre of described glass fiber woven cloth is 500～1500g/m2, the fiber number of described glass fiber warps is
500～9600tex.
2. precast body according to claim 1, it is characterised in that the grammes per square metre of described glass fiber woven cloth is 600～
800g/m2, the fiber number of described glass fiber warps is 1000～2000tex.
3. precast body according to claim 1, it is characterised in that on the basis of the weight of the precast body, the glass
Fibre knitting cloth accounts for 65wt%～80wt%.
4. precast body according to claim 1, it is characterised in that the glass fiber woven cloth is selected from one-way glass fiber
Woven cloth or orthogonal glass fiber woven cloth；Described inner core rod is pultrusion inner core rod.
5. precast body according to claim 1, it is characterised in that the outer surface of described inner core rod has screw thread, described
The depth of screw thread is 0.3mm～0.6mm, and the pitch of the screw thread is 1mm～6mm.
6. the precast body according to any one of Claims 1 to 5, it is characterised in that a diameter of the 50 of described inner core rod～
200mm, the thickness of described winding layer is 80～120mm.
7. precast body according to claim 6, it is characterised in that a diameter of 100～105mm of described inner core rod, institute
The thickness of the winding layer stated is 90～100mm.
8. a kind of preparation method of core rod of insulator precast body, it is characterised in that comprise the steps：
1) surface treatment step：The outer surface of inner core rod is carried out into blasting treatment, is then carried out using volatile organic solvent
Surface treatment, so that form the inner core rod after surface treatment；The pressure of the compressed air adopted by the blasting treatment for 0.4～
1.0MPa, the time of the blasting treatment is 20～60min；
2) winding steps：By the direct inner core rod for winding after surface treatment of glass fiber woven cloth that thickness is 0.5～0.7mm
Upper formation winding layer, so that obtain precast body；
Wherein, described glass fiber woven cloth includes glass fiber warps, the glass fiber warps and the inner core rod
Angle between central shaft is 0～3 °；The fabric width of the glass fiber woven cloth is close to the length of the inner core rod, the glass
The winding angle of glass fibre knitting cloth is substantially zero, and described winding angle refers to the helical angle of the weft yarn of glass fiber woven cloth；
Wherein, the grammes per square metre of described glass fiber woven cloth is 500～1500g/m2, the fiber number of described glass fiber warps is
500～9600tex.
9. preparation method according to claim 8, it is characterised in that：The volatile organic solvent is selected from acetone, wine
Essence, methanol, ether, one or more of chloroform；The pressure of the compressed air adopted by the blasting treatment for 0.6～
0.8MPa, the time of the blasting treatment is 25～35min.
10. a kind of preparation method of core rod of insulator, it is characterised in that comprise the steps：
1) surface treatment step：The outer surface of inner core rod is carried out into blasting treatment, is then carried out using volatile organic solvent
Surface treatment, so that form the inner core rod after surface treatment；The pressure of the compressed air adopted by the blasting treatment for 0.4～
1.0MPa, the time of the blasting treatment is 20～60min；
2) winding steps：By the direct inner core rod for winding after surface treatment of glass fiber woven cloth that thickness is 0.5～0.7mm
Upper formation winding layer, so that obtain precast body；
Wherein, described glass fiber woven cloth includes glass fiber warps, the glass fiber warps and the inner core rod
Angle between central shaft is 0～3 °；The fabric width of the glass fiber woven cloth is close to the length of the inner core rod, the glass
The winding angle of glass fibre knitting cloth is substantially zero, and described winding angle refers to the helical angle of the weft yarn of glass fiber woven cloth；
Wherein, the grammes per square metre of described glass fiber woven cloth is 500～1500g/m2, the fiber number of described glass fiber warps is
500～9600tex；
3) vacuum injection molding step：The precast body is placed in mould, using vacuum injection molding technique by epoxy
Gradually to impregnate the plug precast body in the described mould of resin injection, so as to obtain impregnating；The mould
Relative degree of vacuum be maintained at -0.08～-0.1MPa, the injection rate of epoxy resin is 250～650g/min, epoxy resin
Injection is 1.5～8h with return time；
4) curing schedule：Mould containing the impregnating is closed, being placed in solidification equipment carries out solidification process, described
Solidification process can be divided into three phases, and the first stage is 4～5h of solidification at 57～60 DEG C, and second stage is at 67～70 DEG C
5～6h of lower solidification, phase III are 5～6h of solidification at 77～80 DEG C.
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| CN201610941317.4A CN106531376B (en) | 2016-10-25 | 2016-10-25 | Precast body, core rod of insulator and preparation method |
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| CN106531376A true CN106531376A (en) | 2017-03-22 |
| CN106531376B CN106531376B (en) | 2017-11-17 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109411164A (en) * | 2018-09-12 | 2019-03-01 | 全球能源互联网研究院有限公司 | A kind of composite post insulator plug and preparation method thereof |
| CN110060826A (en) * | 2019-06-09 | 2019-07-26 | 山东厚俞实业有限公司 | Core rod of insulator precast body, core rod of insulator and the insulator with this plug |
| CN112757545A (en) * | 2020-12-17 | 2021-05-07 | 刘凤 | Preparation method of self-repairing composite insulator |
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| JPH07235232A (en) * | 1994-02-22 | 1995-09-05 | Toshiba Corp | Insulating supporting member |
| CN101752044A (en) * | 2008-12-05 | 2010-06-23 | 南方电网技术研究中心 | Core rod of ultra-high-voltage post composite insulator and manufacturing method thereof |
| CN202422879U (en) * | 2011-12-30 | 2012-09-05 | 西安超码复合材料公司 | Large-diameter mandrel for composite post insulator |
| CN103337317A (en) * | 2013-06-14 | 2013-10-02 | 江苏神马电力股份有限公司 | Manufacture method for insulator with combined-type core rod |
| CN105355341A (en) * | 2015-12-04 | 2016-02-24 | 北京玻钢院复合材料有限公司 | Solid core rod, insulator and manufacturing method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH07235232A (en) * | 1994-02-22 | 1995-09-05 | Toshiba Corp | Insulating supporting member |
| CN101752044A (en) * | 2008-12-05 | 2010-06-23 | 南方电网技术研究中心 | Core rod of ultra-high-voltage post composite insulator and manufacturing method thereof |
| CN202422879U (en) * | 2011-12-30 | 2012-09-05 | 西安超码复合材料公司 | Large-diameter mandrel for composite post insulator |
| CN103337317A (en) * | 2013-06-14 | 2013-10-02 | 江苏神马电力股份有限公司 | Manufacture method for insulator with combined-type core rod |
| CN105355341A (en) * | 2015-12-04 | 2016-02-24 | 北京玻钢院复合材料有限公司 | Solid core rod, insulator and manufacturing method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109411164A (en) * | 2018-09-12 | 2019-03-01 | 全球能源互联网研究院有限公司 | A kind of composite post insulator plug and preparation method thereof |
| CN110060826A (en) * | 2019-06-09 | 2019-07-26 | 山东厚俞实业有限公司 | Core rod of insulator precast body, core rod of insulator and the insulator with this plug |
| CN112757545A (en) * | 2020-12-17 | 2021-05-07 | 刘凤 | Preparation method of self-repairing composite insulator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106531376B (en) | 2017-11-17 |
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Effective date of registration: 20181213 Address after: 277500 South of Beixin West Road, Tengzhou City, Zaozhuang City, Shandong Province (Luban Avenue West, College West Road North) Patentee after: Beibao Power Composite Co., Ltd. Address before: 102101 No. 261 Kangxi Road, Badaling Economic Development Zone, Yanqing County, Beijing Patentee before: Beijing FRP Research & Design Institute Composite Co., Ltd. |
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