CN112803312A - Preparation method of silicon rubber prefabricated part slice of cable intermediate joint - Google Patents
Preparation method of silicon rubber prefabricated part slice of cable intermediate joint Download PDFInfo
- Publication number
- CN112803312A CN112803312A CN202011624849.8A CN202011624849A CN112803312A CN 112803312 A CN112803312 A CN 112803312A CN 202011624849 A CN202011624849 A CN 202011624849A CN 112803312 A CN112803312 A CN 112803312A
- Authority
- CN
- China
- Prior art keywords
- cutting
- cable
- joint
- silicon rubber
- sample
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/14—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for joining or terminating cables
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
The invention relates to the technical field of power cable accessories, in particular to a preparation method of a silicon rubber prefabricated part slice of a cable intermediate joint. The invention discloses a preparation method of a silicon rubber prefabricated part slice of a cable intermediate joint, which comprises the steps of firstly radially cutting the cable intermediate joint, then axially cutting, then cutting off a conical tip part, obtaining a plate with proper thickness by trimming, finally obtaining a uniform and flat silicon rubber prefabricated part slice by adopting a slicer to carry out continuous feed cutting, carrying out performance test on the cable intermediate joint by using the slice, directly reflecting the original material performance of the cable intermediate joint, and greatly improving the accuracy and the effectiveness.
Description
Technical Field
The invention relates to the technical field of power cable accessories, in particular to a preparation method of a silicon rubber prefabricated part slice of a cable intermediate joint.
Background
With the increasing demand of society for electric energy, the demand for power supply stability and reliability is also gradually increased, and the power cable is used as a carrier for transmitting electric energy and plays an important role in a power grid. The cable accessories are used for connecting power cables with other power transmission and distribution devices and mainly include terminals and intermediate connectors. The cable system has high requirement on insulating performance due to the reasons of compact structure, high requirement on field installation process, easy introduction of defects and the like, and the breakdown failure rate of cable accessories for connecting cables, cables and other equipment is far higher than that of a cable body.
The cable intermediate joint has the largest use amount in cable accessories, is a weak link of electrical insulation performance and mechanical performance in a cable line, and is a key point for improving the operation safety and reliability of the cable line. The high-voltage integral prefabricated cable joint sequentially comprises an insulating rubber body and a cable insulating layer from outside to inside; the cable conductor of the cable insulation layer and the cable insulation layer at the joint between the cables are fixed through a connecting pipe, and a high-voltage shielding cover is wrapped outside the connecting pipe; the stress cone is positioned in the insulating rubber body. The insulating rubber body of the cable middle joint is generally silicon rubber or ethylene propylene diene monomer; the stress cone and the shielding case are formed by mixing an insulating rubber body and a conductive material, the stress cone is used for homogenizing an electric field, and the high-voltage shielding case is mainly used for effectively controlling the axial field intensity of the end insulation of the cable body. The silicon rubber has the characteristics of high elasticity, good high and low temperature resistance, excellent electrical performance and the like. The ethylene propylene diene monomer rubber has good electrical property and stability and wide application range. The silicon rubber and the ethylene propylene diene monomer rubber have advantages and disadvantages respectively, and the two materials are required to be considered when researching the insulation performance of the cable accessory.
The conventional detection method aims at the situation that the problems of breakdown, aging, reduction of mechanical strength and the like of cable accessories can occur due to the influence of operating conditions and the increase of service life, and adopts the raw materials which are the same as those of insulating rubber bodies (silicon rubber and ethylene propylene diene monomer) of cable intermediate joints, and prepares a sheet sample by a method similar to the production flow, and tests are carried out on the sheet sample according to unified standards, wherein the sheet sample comprises breakdown field intensity, resistivity, dielectric loss, hardness, mechanical strength, physical and chemical properties, thermal properties, surface microstructure and the like. However, in the process of preparing the silicon rubber and the ethylene propylene diene monomer in a laboratory, the raw material state, the applied pressure, the tabletting temperature, the tabletting time and the like cannot be completely equivalent to the preparation environment of a factory during mass production, so that the silicon rubber and the ethylene propylene diene monomer thin sheet sample have slightly different processes, and the test performance of the rubber thin sheet sample prepared by the method cannot completely represent the performance of an actual cable prefabricated part.
As for the prefabricated member made of the ethylene propylene diene monomer, the ethylene propylene diene monomer of the cable middle joint can be processed into a sheet sample by using a cable slicer and other conventional modes due to the high hardness of the material, and the sheet sample can be used as a substitution scheme for a sheet sample prepared from the ethylene propylene diene monomer alone. However, for the prefabricated member made of silicon rubber, the silicon rubber is soft and has strong toughness, so that the prefabricated member cannot be sliced by using common slicing equipment directly.
Disclosure of Invention
In view of the above, the invention provides a preparation method of a silicone rubber prefabricated part slice of a cable intermediate joint, the silicone rubber prefabricated part slice obtained by the preparation method is uniform and flat, and the performance test of the cable intermediate joint is carried out by using the silicone rubber prefabricated part slice, so that the original material performance of the cable intermediate joint can be directly reflected, and the accuracy and the effectiveness are greatly improved.
The specific technical scheme is as follows:
the invention provides a preparation method of a silicon rubber prefabricated part slice of a cable intermediate joint, which comprises the following steps:
step 1: cutting an insulating rubber body of a cable middle joint into two sections in a radial direction to obtain a first section of cable joint and a second section of cable joint;
step 2: cutting along the axial direction of the first section of cable joint or the second section of cable joint to obtain at least two cut samples;
and step 3: removing the cone tip part of the cutting sample to obtain a fan-shaped cutting sample;
and 4, step 4: cutting the fan-shaped cutting sample along an axial cutting surface parallel to the step 2, so that the fan-shaped cutting sample forms a blocky plate;
and 5: and (3) slicing the plate along an axial cutting surface parallel to the step (2) by using a slicing machine to obtain a slice of the silicone rubber prefabricated part of the cable intermediate joint with the thickness of 1mm +/-0.2 mm.
Preferably, the length of the cylinder of the first section of cable joint or the second section of cable joint in the step 2 is 80mm to 120 mm.
Preferably, the area of the radial cutting surface of the cut sample in the step 3 is 1/4-1/3 of the area of the radial cutting surface of the first section of cable joint or the second section of cable joint.
Preferably, the average thickness of the approximately rectangular plate in the step 4 is 20 mm.
Preferably, when the slicing machine slices the plate in step 5, the upper and lower pressing devices of the slicing machine respectively press the upper and lower surfaces of the plate.
Preferably, the pressing device is a pressing roller.
Preferably, the pressing device is a pressing plate.
Preferably, after the slicing in step 5, before the slicing of the silicone rubber preform with a thickness of 1mm ± 0.2mm is obtained, the method further comprises: the semiconductive portion is removed.
Preferably, the knife used in the radial cutting in step 1 is an art knife or a scalpel.
Preferably, the knife used in the axial cutting in step 2 is an art knife or a scalpel.
Preferably, the knife used for removing the tapered tip part of the cut sample in step 3 is an art knife or a scalpel.
Preferably, the knife used for the cutting in step 4 is an art knife or a scalpel.
According to the technical scheme, the invention has the following advantages:
the invention provides a preparation method of a silicon rubber prefabricated part slice of a cable intermediate joint, which comprises the steps of firstly radially cutting the cable intermediate joint, then axially cutting, then cutting off a conical tip part, obtaining a plate with proper thickness through trimming, finally obtaining a uniform and flat silicon rubber slice by adopting a slicer to carry out continuous feed cutting, carrying out performance test on the cable intermediate joint by using the slice, directly reflecting the original material performance of the cable intermediate joint, and greatly improving the accuracy and the effectiveness.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
FIG. 1 is a flow chart of preparation of a silicone rubber preform slice of a cable intermediate joint provided by an embodiment of the invention;
FIG. 2 is a comparison graph of IR spectra of experimental samples and control samples provided in accordance with an embodiment of the present invention.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it should be apparent that the embodiments described below are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a flow chart for preparing a slice of a silicone rubber preform according to an embodiment of the present invention is shown.
The invention provides an embodiment of a preparation method of a silicon rubber prefabricated part slice of a cable intermediate joint, which comprises the following steps:
step 1: cutting an insulating rubber body of a cable middle joint into two sections in a radial direction to obtain a first section of cable joint and a second section of cable joint;
step 2: cutting along the axial direction of the first section of cable joint or the second section of cable joint to obtain at least two cut samples;
and step 3: removing the cone tip part of the cutting sample to obtain a fan-shaped cutting sample;
and 4, step 4: cutting the fan-shaped cutting sample along an axial cutting surface parallel to the step 2, so that the fan-shaped cutting sample forms a blocky plate;
and 5: and (3) slicing the plate by using a slicer along an axial cutting surface parallel to the step 2 to obtain a silicon rubber prefabricated part slice with the thickness of 1mm +/-0.2 mm.
In the embodiment of the invention, firstly, the cable intermediate joint is cut into two sections to obtain two sections of cable joints, and then one section of the cable joint is taken to be axially cut open to obtain at least two cut samples; then taking a thicker cutting sample close to a cuboid, removing a conical tip part, namely a semi-conductive part, as much as possible, and leaving a fan-shaped cutting sample, namely a silicon rubber part; then, cutting the fan-shaped cutting sample to remove the semi-conductive part as much as possible and form a flat rectangular structure, thereby being beneficial to the cutting of a subsequent slicer; and finally, slicing the sheet material for multiple times by using a slicer along an axial cutting surface parallel to the sheet material to obtain silicon rubber prefabricated part slices with the thickness of 1mm +/-0.2 mm, and preferably 1 mm.
The silicon rubber prefabricated part slices obtained by the preparation method provided by the embodiment of the invention are uniform and flat. According to the embodiment of the invention, the silicon rubber prefabricated part slice is directly obtained from the cable middle joint of the whole cable accessory, and the slice is used for testing, so that the original material performance of the cable accessory can be directly reflected, and the accuracy and the effectiveness are greatly improved.
In the embodiment of the invention, when the plate is sliced, the blade is parallel to the axial cutting surface of the plate for cutting, and the upper and lower pressing devices are adopted to respectively press the upper and lower surfaces of the plate, so that the plate is fixed in the cutting process, and the deformation, the displacement and the like of the silicon rubber plate with softer texture are prevented in the cutting process. The upper pressing device and the lower pressing device can be of an inherent structure of a slicing machine, and any two pressing devices capable of pressing the plate can be manually taken.
In the embodiment of the invention, the pressing device is a pressing roller.
In the embodiment of the invention, the pressing device can also be a pressing flat plate.
In the embodiment of the invention, the length of the cylinder of the first section of cable joint or the second section of cable joint in the step 2 is 80-120 mm.
In the embodiment of the invention, the cable joint with the cylinder length of 100mm is selected for the two-section cable joint to be processed in the next step.
In order to avoid excessive non-silicon rubber parts from being reserved as much as possible, in the embodiment of the invention, the area of the radial cutting surface of the sample cut in the step 3 is 1/4-1/3 of the area of the radial cutting surface of the first section of cable joint or the second section of cable joint, and is preferably 1/3.
In the embodiment of the invention, the taper part in the step 3 is a semi-conductive part.
In the embodiment of the invention, the tip part of the cone cut off in the step 3 is a stress cone, and the stress cone is positioned in the insulating rubber body, so that a small part of the stress cone is remained in the fan-shaped cut sample after the stress cone is cut off in the step 3.
In the embodiment of the invention, the thickness of the block-shaped plate in the step 4 depends on the thickness of the silicon rubber insulation of the cable middle joint. The thickness of the sheet in figure 1 is 20 mm.
In the embodiment of the invention, before the silicon rubber preform with the thickness of 1mm +/-0.2 mm is sliced in the step 5, the method further comprises the following steps: the semiconductive portion is removed, preferably with a scalpel.
In the embodiment of the invention, the cutter used in the radial cutting in the step 1 is an art knife or a scalpel.
In the embodiment of the invention, the cutter used in the axial cutting in the step 2 is an art knife or a scalpel.
In the embodiment of the invention, the cutter used for removing the conical tip part of the cut sample in the step 3 is an art knife or a scalpel; .
In the embodiment of the invention, the cutter used in the cutting in the step 4 is an art knife or a scalpel.
In the embodiment of the invention, common cutters such as an art knife and the like cut thick samples, and a scalpel cuts space-time slices, so that the silicon rubber material with better cutting strength is favorably cut.
The preparation method of the silicone rubber prefabricated part slice of the cable intermediate joint provided by the invention is further explained below.
Example 1
This example is the preparation of a slice of a silicone rubber preform for a cable intermediate connector, and the specific flow is shown in fig. 1.
1. Cutting an insulating rubber body of a 110kV high-voltage integral prefabricated cable middle joint into two sections in a radial direction by using an art designer knife to obtain a cable joint with the cylinder length of 100 mm;
2. cutting along the axial direction of the cable joint by using an art designer to obtain a cutting sample with a radial cutting surface of 1/3 circumference size;
3. removing the cone tip part of the cut sample by using an art designer to obtain a fan-shaped cut sample;
4. cutting the fan-shaped cutting sample by adopting a scalpel along the axial cutting surface parallel to the step 2, so that a nearly rectangular plate with a relatively flat surface is formed by the fan-shaped cutting sample, and the average thickness of the plate is 20 mm;
5. and (3) slicing the plate by adopting a blade of a slicing machine along an axial cutting surface parallel to the step (2), feeding while compressing the plate by an upper compression roller and a lower compression roller of the slicing machine, repeatedly feeding for many times to obtain a plurality of slices with the thickness of 1mm, and cutting off the semiconductor part by adopting an art designer to obtain the silicon rubber prefabricated part slices of the cable intermediate joint.
Test examples
The cut pieces of the silicone rubber preform for the cable intermediate joint (experimental group) obtained in example 1 and a 1mm silicone rubber sample (control group) obtained by the same method for preparing the same silicone rubber as the raw material used for the silicone rubber in the cable intermediate joint (example 1) were subjected to an infrared light test, and the test results are shown in table 1 and fig. 2.
As can be seen from fig. 2 and table 1, the groups of the pendant groups of the experimental group and the control group are not very different, while the crosslinks of the samples of the experimental group are slightly larger than those of the samples of the control group, and the groups of the backbone are slightly smaller than those of the samples of the control group, which indicates that the backbone of the samples of the control group is slightly longer than that of the samples of the control group, while the vulcanization degree of the samples of the control group is slightly lower than that of. The reason is that the preparation method of the experimental group sample is integral vulcanization, local differences may exist in the heating uniformity, and the control group sample is relatively uniform in integral heating due to the fact that the thickness is relatively thin, and meanwhile, secondary vulcanization is not carried out, so that the vulcanization degree is relatively low. This indicates that the control samples may differ from the actual preforms properties of the experimental group and that this method is not an optimal detection method, whereas the samples prepared by the preparation method of example 1 are effective in avoiding such differences.
TABLE 1 comparison of Infrared characteristic Peak content
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. The preparation method of the silicon rubber prefabricated part slice of the cable intermediate joint is characterized by comprising the following steps of:
step 1: cutting an insulating rubber body of a cable middle joint into two sections in a radial direction to obtain a first section of cable joint and a second section of cable joint;
step 2: cutting along the axial direction of the first section of cable joint or the second section of cable joint to obtain at least two cut samples;
and step 3: removing the cone tip part of the cutting sample to obtain a fan-shaped cutting sample;
and 4, step 4: cutting the fan-shaped cutting sample along an axial cutting surface parallel to the step 2, so that the fan-shaped cutting sample forms a blocky plate;
and 5: and (3) slicing the plate along an axial cutting surface parallel to the step (2) by using a slicing machine to obtain a slice of the silicone rubber prefabricated part of the cable intermediate joint with the thickness of 1mm +/-0.2 mm.
2. The method of claim 1, wherein the first or second cable joint in step 2 has a cylindrical length of 80mm to 120 mm.
3. The preparation method according to claim 1, wherein the area of the radial cutting surface of the cut sample in the step 3 is 1/4-1/3 of the area of the radial cutting surface of the first section of cable joint or the second section of cable joint.
4. The method according to claim 3, wherein when the slicing machine slices the plate material in step 5, upper and lower pressing devices are used to press the upper and lower surfaces of the plate material, respectively.
5. The method according to claim 1, wherein the block-shaped plate of step 4 has a thickness of 20 mm.
6. The method for preparing the silicon rubber preform according to claim 1, wherein after the slicing in the step 5 and before the slicing of the silicon rubber preform with the thickness of 1mm ± 0.2mm, the method further comprises the following steps: the semiconductive portion is removed.
7. The method of claim 4, wherein the pressing device is a pressing roller.
8. The method of claim 4, wherein the pressing device is a pressing plate.
9. The method for preparing the hard alloy material according to claim 1, wherein the knife used in the radial cutting in step 1 is a utility knife or a surgical knife;
step 2, the cutter used for axial cutting is an art knife or a scalpel;
and 3, removing the conical tip part of the cut sample by using the cutter as an art designing knife or a scalpel.
10. The method for preparing the compound of claim 1, wherein the knife used in the cutting in the step 4 is a utility knife or a surgical knife.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011624849.8A CN112803312A (en) | 2020-12-30 | 2020-12-30 | Preparation method of silicon rubber prefabricated part slice of cable intermediate joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011624849.8A CN112803312A (en) | 2020-12-30 | 2020-12-30 | Preparation method of silicon rubber prefabricated part slice of cable intermediate joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112803312A true CN112803312A (en) | 2021-05-14 |
Family
ID=75807640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011624849.8A Pending CN112803312A (en) | 2020-12-30 | 2020-12-30 | Preparation method of silicon rubber prefabricated part slice of cable intermediate joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112803312A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1432238A (en) * | 1973-04-03 | 1976-04-14 | Utility Tool Corp | Cutting member for severing covering material from electric cables device for automatic adjustment of the amplitude of alternating |
| CN101750232A (en) * | 2008-12-18 | 2010-06-23 | 北京市电力公司 | Method for slicing cable joint |
| CN101875069A (en) * | 2009-11-23 | 2010-11-03 | 北京科技大学 | A short process production method of high boron stainless steel plate |
| CN103521829A (en) * | 2013-10-12 | 2014-01-22 | 苏州宝兴电线电缆有限公司 | Tube product slicing device |
| CN104220884A (en) * | 2012-03-27 | 2014-12-17 | Abb技术有限公司 | Method for determining an electrical property of cable insulation |
| US20150028885A1 (en) * | 2013-07-23 | 2015-01-29 | Atomic Energy Council - Institute Of Nuclear Energy Research | Method for evaluation of cable aging degradation based on slice sampling |
| CN106346531A (en) * | 2016-08-29 | 2017-01-25 | 贵州苗仁堂制药有限责任公司 | Slicing mechanism of hydrogel coating machine |
| CN107462437A (en) * | 2017-08-09 | 2017-12-12 | 海盐猛凌汽车配件有限公司 | Rough turn part metallographic specimen sampling method |
| CN107525743A (en) * | 2017-08-01 | 2017-12-29 | 南京理工大学 | A kind of Taylor's Couette experimental provision for solid state medium |
| CN109100369A (en) * | 2018-08-20 | 2018-12-28 | 首都师范大学 | A kind of defects detection positioning characterizing method of cylinder combination workpiece |
| CN111007340A (en) * | 2019-12-16 | 2020-04-14 | 广东电网有限责任公司 | Method, system and equipment for diagnosing aging of silicone rubber of cable accessory |
| CN112140196A (en) * | 2020-08-11 | 2020-12-29 | 华南理工大学 | Improved slicing method for slicing by using cross-linked cable slicer |
-
2020
- 2020-12-30 CN CN202011624849.8A patent/CN112803312A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1432238A (en) * | 1973-04-03 | 1976-04-14 | Utility Tool Corp | Cutting member for severing covering material from electric cables device for automatic adjustment of the amplitude of alternating |
| CN101750232A (en) * | 2008-12-18 | 2010-06-23 | 北京市电力公司 | Method for slicing cable joint |
| CN101875069A (en) * | 2009-11-23 | 2010-11-03 | 北京科技大学 | A short process production method of high boron stainless steel plate |
| CN104220884A (en) * | 2012-03-27 | 2014-12-17 | Abb技术有限公司 | Method for determining an electrical property of cable insulation |
| US20150028885A1 (en) * | 2013-07-23 | 2015-01-29 | Atomic Energy Council - Institute Of Nuclear Energy Research | Method for evaluation of cable aging degradation based on slice sampling |
| CN103521829A (en) * | 2013-10-12 | 2014-01-22 | 苏州宝兴电线电缆有限公司 | Tube product slicing device |
| CN106346531A (en) * | 2016-08-29 | 2017-01-25 | 贵州苗仁堂制药有限责任公司 | Slicing mechanism of hydrogel coating machine |
| CN107525743A (en) * | 2017-08-01 | 2017-12-29 | 南京理工大学 | A kind of Taylor's Couette experimental provision for solid state medium |
| CN107462437A (en) * | 2017-08-09 | 2017-12-12 | 海盐猛凌汽车配件有限公司 | Rough turn part metallographic specimen sampling method |
| CN109100369A (en) * | 2018-08-20 | 2018-12-28 | 首都师范大学 | A kind of defects detection positioning characterizing method of cylinder combination workpiece |
| CN111007340A (en) * | 2019-12-16 | 2020-04-14 | 广东电网有限责任公司 | Method, system and equipment for diagnosing aging of silicone rubber of cable accessory |
| CN112140196A (en) * | 2020-08-11 | 2020-12-29 | 华南理工大学 | Improved slicing method for slicing by using cross-linked cable slicer |
Non-Patent Citations (1)
| Title |
|---|
| 彭向阳 等: "应用显微红外法的硅橡胶复合绝缘子伞裙老化深度研究", 《电网技术》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7853132B2 (en) | Electrically heatable fluid line | |
| US8458898B2 (en) | Method of preparing a terminal end of a corrugated coaxial cable for termination | |
| TW200810281A (en) | Coaxial connector including clamping ramps and associated methods | |
| CN104900334B (en) | 10-35kv insulating tubular bus and manufacturing method thereof | |
| US10855063B2 (en) | Method in the manufacturing of an insulated electric high voltage DC termination or joint | |
| CN112803312A (en) | Preparation method of silicon rubber prefabricated part slice of cable intermediate joint | |
| KR20180097507A (en) | Semiconductive shielding composition | |
| JP2008130347A (en) | Shielded twisted wire | |
| CN114347453A (en) | High-voltage cable molding type joint interface processing method | |
| CN112940387B (en) | Strippable semiconductive shielding rubber for rubber cable and preparation method thereof | |
| Bamji et al. | Properties of water treed and non-treed XLPE cable insulation | |
| CN112959398B (en) | Slicing device and slicing method for cable accessory silicon rubber prefabricated part | |
| CN211183168U (en) | Quick wire stripping device of high-voltage insulated conductor | |
| CN111499956B (en) | Composite material resisting water tree aging, preparation method, application and performance test method thereof | |
| JP3803287B2 (en) | Power cable connection structure | |
| CN109503920A (en) | High dielectric insulation composite material and preparation method and application | |
| CN214043262U (en) | A device for peeling silicon rubber sheath insulation rod | |
| CN112521885A (en) | Semi-conductive self-adhesive tape for high-follow-shape communication cable | |
| JP3349747B2 (en) | Insulation composition and power cable | |
| JPH0562529A (en) | Power cable | |
| Du et al. | Dependence of electrical treeing behavior on cross-linking temperature of XLPE | |
| CN208521680U (en) | Water resistant tree power cable with cross-linked polyethylene insulation is pressed in one kind | |
| Choi et al. | Breakdown characteristics of XLPE/EPDM on the treatment condition of the interfacial layer | |
| CN118155953A (en) | Production process of water-blocking corrosion-resistant power cable | |
| CN108707299A (en) | A kind of hard coaxial cable flame retardant jacket materials and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210514 |