The production method of modified graphite grounding bodyTechnical field
The invention belongs to soft graphite grounding body fields, and in particular to a kind of production method of modified graphite grounding body.
Background technique
With the development of power grid, the construction of every electric power facility just increases year by year, especially UHV Transmission Engineering in recent yearsDevelopment, large-scale trans-regional transmission line of electricity is more and more wider.China region area is wide and with a varied topography changeable, exists within the border multiple closeCollection type thunderbolt region, it is especially in the majority with southern area.Thunder-strike phenomenon is a kind of more serious natural calamity, and transmission line of electricity is preventedThunder protective grounding is directly related to the security and stability of electric system.And graphite grounding body is most common nonmetal grounding body,It is stablized with good electric conductivity and dash current tolerance in heavy current impact flowering structure, and reliable with corrosion resistance,Long service life, it is pollution-free to soil the advantages that, be the ideal material of earthing pole, Grounding Grids can be with the increasing of its lengthAdd, ground resistance can better meet the requirement of ground resistance with reduction.But because graphite grounding body is buried for a long timeIn soil, the even drop resistance affected by environment that can be corroded.
Summary of the invention
The purpose of the present invention is to provide the systems that one kind can produce corrosion-resistant good and flexible preferably graphite grounding bodyPreparation Method.
To achieve the above object, the present invention is achieved by the following technical solutions:
The production method of modified graphite grounding body, modified graphite silk and diameter 5 including use 2.5 ± 0.3mm of diameter ±The stainless steel wire of 0.2mm is woven into soft graphite grounding body,
The modified graphite silk is made of following steps:
(1) raw material preparation: graphite, pitch, elastic resin, epoxy resin, Carbon fibe and the diacetone of phosphorus content >=95%Alcohol；
(2) graphite that mass parts are 20~30 parts is first taken to carry out extruding, the temperature of extruding is greater than 950 DEG C, puffing time 13~6 parts of pitch, 7~10 parts of elastic resin and 3~4 parts of the diacetone alcohol of mass parts are added after extruding by~2min, to6~9 parts of the epoxy resin and 10~15 parts of Carbon fibe of mass parts is added in temperature after dropping to 100~200 DEG C, be sufficiently mixedAfter be pressed into diameter 2.5 ± 0.3mm graphite silk.
Further, the stainless steel wire uses the stainless steel wire of 304 trades mark.
Further, the raw material of the modified graphite silk includes the stone of 28 parts of phosphorus content >=95% of following mass partsInk, 5 parts of pitch, 8 parts of elastic resin, 8 parts of epoxy resin, 12 parts of Carbon fibe and 2 parts of diacetone alcohol.
The invention has the following advantages:
(1) by the way that carbon fiber is added in graphite, plyability between graphite and other substances is not only increased, may be used alsoTo increase carbon content simultaneously, improves and lead resistance；
(2) the freeze proof characteristic of anticorrosion can be improved by the way that diacetone alcohol is added in graphite, helps to promote grounding bodyLower temperature resistance, and then guarantee that it leads resistance ability and service life；
(3) by the way that elastic resin and epoxy resin are added in graphite, the flexibility of graphite is further increased, makes it in mistakeCheng Zhongke bends repeatedly and does not damage.
Specific embodiment
Embodiment 1
A kind of modified graphite provided in this embodiment, raw material include 28 parts of phosphorus content >=95% of following mass partsGraphite, 5 parts of pitch, 8 parts of elastic resin, 8 parts of epoxy resin, 12 parts of Carbon fibe and 2 parts of diacetone alcohol.
Embodiment 2
A kind of modified graphite provided in this embodiment, raw material include 20 parts of phosphorus content >=95% of following mass partsGraphite, 4 parts of pitch, 7 parts of elastic resin, 8 parts of epoxy resin, 12 parts of Carbon fibe and 3 parts of diacetone alcohol.
Embodiment 3
A kind of modified graphite provided in this embodiment, raw material include 25 parts of phosphorus content >=95% of following mass partsGraphite, 6 parts of pitch, 8 parts of elastic resin, 7 parts of epoxy resin, 14 parts of Carbon fibe and 4 parts of diacetone alcohol.
Embodiment 4
A kind of modified graphite provided in this embodiment, raw material include 30 parts of phosphorus content >=95% of following mass partsGraphite, 5 parts of pitch, 10 parts of elastic resin, 9 parts of epoxy resin, 10 parts of Carbon fibe and 3 parts of diacetone alcohol.
Embodiment 5
A kind of modified graphite provided in this embodiment, raw material include 22 parts of phosphorus content >=95% of following mass partsGraphite, 3 parts of pitch, 7 parts of elastic resin, 6 parts of epoxy resin, 15 parts of Carbon fibe and 4 parts of diacetone alcohol.
Embodiment 6
A kind of modified graphite provided in this embodiment, raw material include 27 parts of phosphorus content >=95% of following mass partsGraphite, 5 parts of pitch, 9 parts of elastic resin, 8 parts of epoxy resin, 13 parts of Carbon fibe and 4 parts of diacetone alcohol.
Embodiment 7
The preparation method for present embodiments providing a kind of modified graphite silk includes the following steps:
(1) raw material preparation: graphite, pitch, elastic resin, epoxy resin, Carbon fibe and the diacetone of phosphorus content >=95%Alcohol；
(2) graphite is first taken to carry out extruding, the temperature of extruding is greater than 950 DEG C, and puffing time is 1~2min, is added after extrudingEpoxy resin and Carbon fibe are added after temperature drops to 100~200 DEG C, is sufficiently mixed for pitch, elastic resin and diacetone alcoholAfter be pressed into diameter 2.5 ± 0.3mm graphite silk.
Embodiment 8
The preparation method for present embodiments providing a kind of modified graphite grounding body includes: the production side of modified graphite grounding bodyMethod, the stainless steel wire including 5 ± 0.2mm of modified graphite silk and diameter using 2.5 ± 0.3mm of diameter are woven into soft graphite and connectGround body.
The grounding body of the graphite silk preparation of Examples 1 to 6 preparation is detected, the resistance including unit length usesMicro resistance test equipment；Tensile strength detection, is measured with tensile testing machine；Bend resistance detection, arbitrarily bends not broken.
The above is only the preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto, anyThe transformation and replacement carried out based on technical solution provided by the present invention and inventive concept should all be covered in protection model of the inventionIn enclosing.