CN103724879B - A kind of electric power protecting pipe and preparation method thereof - Google Patents
A kind of electric power protecting pipe and preparation method thereof Download PDFInfo
- Publication number
- CN103724879B CN103724879B CN201310754814.XA CN201310754814A CN103724879B CN 103724879 B CN103724879 B CN 103724879B CN 201310754814 A CN201310754814 A CN 201310754814A CN 103724879 B CN103724879 B CN 103724879B
- Authority
- CN
- China
- Prior art keywords
- powder
- electric power
- protecting pipe
- power protecting
- borax
- 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.)
- Expired - Fee Related
Links
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 239000000843 powder Substances 0.000 claims abstract description 26
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 13
- JRPBQTZRNDNNOP-UHFFFAOYSA-N barium titanate Chemical compound [Ba+2].[Ba+2].[O-][Ti]([O-])([O-])[O-] JRPBQTZRNDNNOP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910002113 barium titanate Inorganic materials 0.000 claims abstract description 13
- 229910021538 borax Inorganic materials 0.000 claims abstract description 13
- 238000003763 carbonization Methods 0.000 claims abstract description 13
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 claims abstract description 13
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000004328 sodium tetraborate Substances 0.000 claims abstract description 13
- 235000010339 sodium tetraborate Nutrition 0.000 claims abstract description 13
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000000741 silica gel Substances 0.000 claims abstract description 12
- 229910002027 silica gel Inorganic materials 0.000 claims abstract description 12
- 229920002101 Chitin Polymers 0.000 claims abstract description 9
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 9
- 229920002472 Starch Polymers 0.000 claims abstract description 9
- 235000021355 Stearic acid Nutrition 0.000 claims abstract description 9
- 150000002170 ethers Chemical class 0.000 claims abstract description 9
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims abstract description 9
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000004417 polycarbonate Substances 0.000 claims abstract description 9
- 229920000515 polycarbonate Polymers 0.000 claims abstract description 9
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 9
- 239000004800 polyvinyl chloride Substances 0.000 claims abstract description 9
- 229920000915 polyvinyl chloride Polymers 0.000 claims abstract description 9
- 239000002994 raw material Substances 0.000 claims abstract description 9
- 239000008107 starch Substances 0.000 claims abstract description 9
- 235000019698 starch Nutrition 0.000 claims abstract description 9
- 239000008117 stearic acid Substances 0.000 claims abstract description 9
- 239000000203 mixture Substances 0.000 claims description 16
- 238000003756 stirring Methods 0.000 claims description 12
- 238000005520 cutting process Methods 0.000 claims description 8
- 239000011148 porous material Substances 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 4
- -1 with back and stir Chemical compound 0.000 claims description 4
- 239000012467 final product Substances 0.000 claims 1
- 239000000047 product Substances 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052760 oxygen Inorganic materials 0.000 abstract description 3
- 239000001301 oxygen Substances 0.000 abstract description 3
- 150000003839 salts Chemical class 0.000 abstract description 2
- 230000008676 import Effects 0.000 abstract 1
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000002906 microbiologic effect Effects 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000015784 hyperosmotic salinity response Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
The invention belongs to electric power Material Field, disclose a kind of electric power protecting pipe, it is prepared from by the raw material of following weight parts, barium titanate powder 2, aluminum nitride powder 2, carbonization chromium powder 2, borax 2, talcum powder 2, Paris white 2, silica gel 2, TDE 5, stearic acid 8, starch ethers 10, chitin 15, polycarbonate 20, Natvosol 30, polyvinyl alcohol 36, polyvinyl chloride 45.The invention also discloses a kind of preparation method of electric power protecting pipe.Electric power protecting pipe prepared by the present invention possesses good tensile strength, flexural strength, bus hardness, imports the heat-resisting cold tolerance of coefficient, oxygen index and salt tolerant, can be applied to various extreme environment, possess good application prospect.
Description
Technical field
The invention belongs to electric power Material Field, specifically disclose a kind of electric power protecting pipe and preparation method thereof.
Background technology
Electric power protecting pipe is insulation protection heat-shrinkable T bush conventional on a kind of cable; the main material of this series products is PE; through cross-linking radiation and add these two techniques of thermal enlargement; there is thermal contraction function; contraction ratio is about 3: 1; bore from 50-350mm not etc., can be used as pyrocondensation inner sheath, the oversheath in cable accessory, and outer layer insulation water-proof jacket pipe.The main application of electric power protecting pipe is used as cable sheath, and protection cable does not damage by extraneous, and guarantee Electrical Safety, electric power protecting pipe is divided into buried and ground type.The protecting pipe that eighties of last century generally adopts metallic substance to prepare is to protect cable; Along with the development of Material Field, plastic pipe instead of original metal pipe material.
Electric power protecting pipe generally needs to be applied in various severe environment, comprises seabed, snowfield and saline-alkali environment etc.Because environment for use is severe, needs to carry out enhancing modified to plastic material, make it that there is higher ring stiffness, in order to resist extraneous load; Need stronger cold-resistant temperature capacity, and it is not yielding to be not easily corroded, the features such as long service life.Electric power protecting pipe of the prior art often exists various performance can not be had both, and range of application is extensive not, and technician selects the type of electric power protecting pipe often very difficult for varying environment.Chinese patent CN201210250643 discloses a kind of cable sheath tube, and this protecting pipe possesses good rigidity, but it to run under severe cold environment easily ruptural deformation, be not suitable for the Northeast, and flame retardant properties is poor; Chinese patent CN200910197527 discloses a kind of steel wire reinforced polytetrafluoroethylspiral spiral tube component, and this assembly preparation method is complicated, and its suppleness and corrosion resistance nature have much room for improvement.Prior art urgently needs a kind of chance extreme temperature difficult deformation, acid and alkali-resistance microbiological corrosion, the electric power protecting pipe that stretching-resisting bending-resisting intensity is good and flame retardant properties is strong.
Summary of the invention
The chance extreme temperature existed in order to the electric power protecting pipe overcoming prior art is easily out of shape fracture, easily by soda acid microbiological corrosion, and stretching-resisting bending-resisting intensity difference, and the defect such as inflammable; The invention discloses a kind of novel electric power protecting pipe, this electric power protecting pipe possesses good performance, can be widely used in suitability for industrialized production.
For achieving the above object, the technical solution adopted in the present invention is as follows:
A kind of electric power protecting pipe, it is prepared from by the raw material of following weight parts:
Barium titanate powder 1-2, aluminum nitride powder 1-2, carbonization chromium powder 1-2, borax 1-2, talcum powder 1-2, Paris white 1-2, silica gel 1-2, TDE 3-5, stearic acid 6-8, starch ethers 8-10, chitin 12-15, polycarbonate 18-20, Natvosol 25-30, polyvinyl alcohol 32-36, polyvinyl chloride 40-45.
Preferably, barium titanate powder, aluminum nitride powder, carbonization chromium powder, borax, the size controlling of talcum powder and Paris white is more than 300 orders;
Preferably, the pore volume of silica gel is 0.6-0.8ml/g, and mean pore size is 5.0-7.0nm, and specific surface is 500650m
2/ g.
The invention also discloses the preparation method of above-mentioned electric power protecting pipe, comprise the steps:
(1) above-mentioned each raw material for standby is taken according to weight part;
(2) by barium titanate powder, aluminum nitride powder, carbonization chromium powder, borax, talcum powder and Paris white are put in stirrer, stir and obtain mixture 1;
(3) put in retort by the mixture 1 that step (2) obtains, the temperature of retort controls at 50 DEG C, and add silica gel edge with back and stir, stirring velocity is 100 revs/min, and churning time is 5 minutes, obtains mixture 2;
(4) by the mixture 2 that step (3) obtains, TDE, stearic acid, starch ethers, chitin, polycarbonate, Natvosol, polyvinyl alcohol and polyvinyl chloride are put in whizzer successively, 2000 turns/min centrifugal mixer 2-3 minute, after mixing, enter twin screw extruder and be squeezed into molten state, after product pulls out by forming machine, by cutting machine fixed length cutting, send into pipe-expanding machine, after enlarging completes, namely obtain above-mentioned electric power protecting pipe.
Electric power protecting pipe prepared by the present invention possesses effect useful as follows:
Electric power protecting pipe prepared by the present invention possesses good tensile strength, flexural strength, bus hardness, thermal conductivity and oxygen index; This electric power protecting pipe possesses the heat-resisting cold tolerance of good salt tolerant, can be used in various extreme environment, have wide range of applications, long service life, plays effective provide protection to underground and earth's surface cable; Preparation method of the present invention is simple, with low cost, possesses good application prospect.
Embodiment
Below employing specific embodiment is further explained the present invention, but should not regards the restriction to initiative spirit of the present invention as.
Embodiment 1
A kind of electric power protecting pipe, it is prepared from by the raw material of following weight parts:
Barium titanate powder 1, aluminum nitride powder 1, carbonization chromium powder 1, borax 1, talcum powder 1, Paris white 1, silica gel 1, TDE 3, stearic acid 6, starch ethers 8, chitin 12, polycarbonate 18, Natvosol 25, polyvinyl alcohol 32, polyvinyl chloride 40.
Above-mentioned barium titanate powder, aluminum nitride powder, carbonization chromium powder, borax, the size controlling of talcum powder and Paris white is at 400 orders;
The pore volume of silica gel is 0.6-0.8ml/g, and mean pore size is 5.0-7.0nm, and specific surface is 500-650m
2/ g.
The preparation method of above-mentioned electric power protecting pipe, comprises the steps:
(1) above-mentioned each raw material for standby is taken according to weight part;
(2) by barium titanate powder, aluminum nitride powder, carbonization chromium powder, borax, talcum powder and Paris white are put in stirrer, stir and obtain mixture 1;
(3) put in retort by the mixture 1 that step (2) obtains, the temperature of retort controls at 50 DEG C, and add silica gel edge with back and stir, stirring velocity is 100 revs/min, and churning time is 5 minutes, obtains mixture 2;
(4) by the mixture 2 that step (3) obtains, TDE, stearic acid, starch ethers, chitin, polycarbonate, Natvosol, polyvinyl alcohol and polyvinyl chloride are put in whizzer successively, 2000 turns/min centrifugal mixer 2 minutes, after mixing, enter twin screw extruder and be squeezed into molten state, after product pulls out by forming machine, by cutting machine fixed length cutting, send into pipe-expanding machine, after enlarging completes, namely obtain above-mentioned electric power protecting pipe.
Embodiment 2
A kind of electric power protecting pipe, it is prepared from by the raw material of following weight parts:
Barium titanate powder 2, aluminum nitride powder 2, carbonization chromium powder 2, borax 2, talcum powder 2, Paris white 2, silica gel 2, TDE 5, stearic acid 8, starch ethers 10, chitin 15, polycarbonate 20, Natvosol 30, polyvinyl alcohol 36, polyvinyl chloride 45.
Wherein, barium titanate powder, aluminum nitride powder, carbonization chromium powder, borax, the size controlling of talcum powder and Paris white is at 500 orders.
The preparation method of above-mentioned electric power protecting pipe, comprises the steps:
(1) above-mentioned each raw material for standby is taken according to weight part;
(2) by barium titanate powder, aluminum nitride powder, carbonization chromium powder, borax, talcum powder and Paris white are put in stirrer, stir and obtain mixture 1;
(3) put in retort by the mixture 1 that step (2) obtains, the temperature of retort controls at 50 DEG C, and add silica gel edge with back and stir, stirring velocity is 100 revs/min, and churning time is 5 minutes, obtains mixture 2;
(4) by the mixture 2 that step (3) obtains, TDE, stearic acid, starch ethers, chitin, polycarbonate, Natvosol, polyvinyl alcohol and polyvinyl chloride are put in whizzer successively, 2000 turns/min centrifugal mixer 3 minutes, after mixing, enter twin screw extruder and be squeezed into molten state, after product pulls out by forming machine, by cutting machine fixed length cutting, send into pipe-expanding machine, after enlarging completes, namely obtain above-mentioned electric power protecting pipe.
Embodiment 3
The various performance parameters of electric power protecting pipe prepared by the present invention measures: with external diameter 100mm, wall thickness 5mm, length 10m are example.Tensile strength, flexural strength, bus hardness, thermal conductivity and oxygen index are respectively with reference to GB/T1458, GB/T1449, GB/T3854, GB/T5990, GB/T8924.Concrete outcome is in table 1.
Table 1
Salt tolerance: electric power protecting pipe to be soaked in the sodium chloride solution of 10% 30 days, tensile strength only have dropped 1%, and flexural strength have dropped 3%, and bus hardness have dropped 2%.
Resistance to Thermal test: test sample is put into boiling water and boil 1 hour, without distortion and appearance of bubbling, tensile strength, flexural strength and bus hardness retain more than 90%, possess good resistance toheat.
Cold-resistant test: at test sample being placed in-50 DEG C 60 days, leakless occurs, tensile strength, flexural strength and bus hardness retain more than 92%.
Finally, it is also to be noted that what enumerate above is only several specific embodiments of the present invention.Obviously, the invention is not restricted to above embodiment, many distortion can also be had.All distortion that those of ordinary skill in the art can directly derive from content disclosed by the invention or associate, all should think protection scope of the present invention.
Claims (2)
1. an electric power protecting pipe, it is prepared from by the raw material of following weight parts:
Barium titanate powder 1-2, aluminum nitride powder 1-2, carbonization chromium powder 1-2, borax 1-2, talcum powder 1-2, Paris white 1-2, silica gel 1-2, TDE 3-5, stearic acid 6-8, starch ethers 8-10, chitin 12-15, polycarbonate 18-20, Natvosol 25-30, polyvinyl alcohol 32-36, polyvinyl chloride 40-45;
Described barium titanate powder, aluminum nitride powder, carbonization chromium powder, borax, the size controlling of talcum powder and Paris white is more than 300 orders; Its preparation method comprises the steps:
(1) above-mentioned each raw material for standby is taken according to weight part;
(2) by barium titanate powder, aluminum nitride powder, carbonization chromium powder, borax, talcum powder and Paris white are put in stirrer, stir and obtain mixture 1;
(3) put in retort by the mixture 1 that step (2) obtains, the temperature of retort controls at 50 DEG C, and add silica gel edge with back and stir, stirring velocity is 100 revs/min, and churning time is 5 minutes, obtains mixture 2;
(4) by the mixture 2 that step (3) obtains, TDE, stearic acid, starch ethers, chitin, polycarbonate, Natvosol, polyvinyl alcohol and polyvinyl chloride are put in whizzer successively, 2000 turns/min centrifugal mixer 2-3 minute, after mixing, enter twin screw extruder and be squeezed into molten state, after product pulls out by forming machine, by cutting machine fixed length cutting, send into pipe-expanding machine, after enlarging completes and get final product.
2. electric power protecting pipe as claimed in claim 1, it is characterized in that, the pore volume of described silica gel is 0.6-0.8ml/g, and mean pore size is 5.0-7.0nm, and specific surface area is 500-650m
2/ g.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310754814.XA CN103724879B (en) | 2013-12-31 | 2013-12-31 | A kind of electric power protecting pipe and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310754814.XA CN103724879B (en) | 2013-12-31 | 2013-12-31 | A kind of electric power protecting pipe and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103724879A CN103724879A (en) | 2014-04-16 |
| CN103724879B true CN103724879B (en) | 2015-10-14 |
Family
ID=50449192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310754814.XA Expired - Fee Related CN103724879B (en) | 2013-12-31 | 2013-12-31 | A kind of electric power protecting pipe and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103724879B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105514884A (en) * | 2015-08-23 | 2016-04-20 | 国网山东省电力公司临沂供电公司 | Cable protection guiding device |
| CN106633464B (en) * | 2015-11-01 | 2018-12-07 | 国网山东省电力公司临沂供电公司 | The insulating shield of anti-lightning strike insulator |
| CN105566824A (en) * | 2016-02-01 | 2016-05-11 | 安徽华峰电缆集团有限公司 | Formula for low-smoke heat-resistant oil-resistant flame-retardant silica gel cable insulation sleeve |
| CN108264653A (en) * | 2016-07-28 | 2018-07-10 | 缪琼华 | A kind of cellulose filling polyvinyl chloride and preparation method thereof |
| CN107189273A (en) * | 2017-07-04 | 2017-09-22 | 合肥市大卓电力有限责任公司 | A kind of electric power protecting pipe and preparation method thereof |
| CN108586981A (en) * | 2018-05-03 | 2018-09-28 | 南京思甲宁新材料科技有限公司 | The dispensing and make of enhanced power cable cover(ing) |
| CN108727799A (en) * | 2018-06-21 | 2018-11-02 | 合肥安力电力工程有限公司 | A kind of high-performance electric wire cable protection pipe material and preparation method thereof |
| CN108912646A (en) * | 2018-07-26 | 2018-11-30 | 合肥欧仕嘉机电设备有限公司 | A kind of fire-retardant electric power protection tubing and preparation method thereof |
| CN109776995A (en) * | 2018-11-30 | 2019-05-21 | 李敏 | A kind of electric power sheath tube material of high thermal conductivity coefficient and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1763129A (en) * | 2004-10-20 | 2006-04-26 | 大连圣迈化学有限公司 | Thermoplastic halogen-free few-smoke flame-proof cable sheath material and machining process |
| CN101497725A (en) * | 2009-02-26 | 2009-08-05 | 安徽华电线缆集团有限公司 | Composite material for electric wire and cable insulation and sleeve |
| CN102134360A (en) * | 2011-05-10 | 2011-07-27 | 上海远洲管业有限公司 | Preparation method of super-strong high temperature-resistant chlorinated polyvinyl chloride tubes |
-
2013
- 2013-12-31 CN CN201310754814.XA patent/CN103724879B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1763129A (en) * | 2004-10-20 | 2006-04-26 | 大连圣迈化学有限公司 | Thermoplastic halogen-free few-smoke flame-proof cable sheath material and machining process |
| CN101497725A (en) * | 2009-02-26 | 2009-08-05 | 安徽华电线缆集团有限公司 | Composite material for electric wire and cable insulation and sleeve |
| CN102134360A (en) * | 2011-05-10 | 2011-07-27 | 上海远洲管业有限公司 | Preparation method of super-strong high temperature-resistant chlorinated polyvinyl chloride tubes |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103724879A (en) | 2014-04-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103724879B (en) | A kind of electric power protecting pipe and preparation method thereof | |
| CN103724880B (en) | A kind of cable protection pipe and application thereof | |
| CN107383545A (en) | A kind of modified white graphite alkene composite polyethylene pipe and preparation method thereof | |
| CN102786729B (en) | PE160 grade composite material for pipes and preparation method of composite material | |
| CN104130503B (en) | A kind of insulating material for power system and application | |
| CN105385016A (en) | Composite material based on ethylene-tetrafluoroethylene copolymer, preparation method and applications thereof | |
| CN204537730U (en) | A kind of anticorrosion stretch-proof insulated cable | |
| CN104861414A (en) | Cable material for distribution system | |
| CN107904482A (en) | A kind of retarding corrosion-resisting cable bridge frame and preparation method thereof | |
| CN105778300A (en) | Underground power cable sheath tube | |
| CN103289323B (en) | Cable and application thereof to electric power system | |
| CN104448485A (en) | Preparation technology of cable materials with functions of mildew prevention, damp prevention and bacterium resistance | |
| CN105367859A (en) | High-temperature-resistant and dampproof cable for industry | |
| CN105965923A (en) | Processing process for polytetrafluoroethylene steel wire composite pipe | |
| CN105367910A (en) | Preparation method of heat-resistant sheath insulation material for cable | |
| CN110571748A (en) | Heat-resistant wear-resistant high-toughness PVC solid-wall pipe for underground communication pipeline | |
| CN104327363A (en) | Electric wire insulating material applicable to hydrothermal environment | |
| CN108148246A (en) | A kind of high heat-resisting Sun-proof cable jacket | |
| CN101984528A (en) | PVC protective sleeve for protecting cable and production method thereof | |
| CN207165290U (en) | A kind of anti-bending cable | |
| CN100378141C (en) | Manufacturing method of wire cable for silicon rubber insulation electrical equipment and its product | |
| CN105694456A (en) | Corrosion-resistant cable sheath material and preparation method thereof | |
| CN208433239U (en) | A kind of underground heat private cable | |
| CN106147121B (en) | A kind of preparation method of antiseptic fire-retardation dragging and squeezing glass fiber reinforced plastics crane span structure | |
| CN104513442A (en) | Formula of PVC electrical conduit capable of ceramization and method for preparing PVC electrical conduit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151014 Termination date: 20161231 |