CN103724879A - Electric protective casing and preparation method thereof - Google Patents
Electric protective casing and preparation method thereof Download PDFInfo
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- CN103724879A CN103724879A CN201310754814.XA CN201310754814A CN103724879A CN 103724879 A CN103724879 A CN 103724879A CN 201310754814 A CN201310754814 A CN 201310754814A CN 103724879 A CN103724879 A CN 103724879A
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Abstract
The invention belongs to the field of electric materials, and discloses an electric protective casing. The electric protective casing is prepared from the following raw materials in parts by weight: 2 parts of barium titanate powder, 2 parts of aluminum nitride, 2 parts of chromium carbide powder, 2 parts of borax, 2 parts of talc powder, 2 parts of calcium carbonate powder, 2 parts of silica gel, 5 parts of decabromodiphenylethane, 8 parts of stearic acid, 10 parts of starch ether, 15 parts of chitin, 20 parts of polycarbonate, 30 parts of hydroxyethyl cellulose, 36 parts of polyvinyl alcohol, and 45 parts of polyvinyl chloride. The invention also discloses a preparation method of the electric protective casing. The electric protective casing prepared by the method has good tensile strength, bending strength, barcol hardness, import coefficient, oxygen index and salt-resistance, heat-resistance and cold-resistance, can be applied to various extreme environments, and has a 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; pass through cross-linking radiation and add these two techniques of thermal enlargement; there is thermal contraction function; contraction ratio is 3: 1 left and right; bore from 50-350mm not etc., can be used as pyrocondensation inner sheath, oversheath in cable accessory, and outer layer insulation water-proof jacket pipe.The main application of electric power protecting pipe is as cable sheath, and protection cable is not subject to extraneous damage, guarantees Electrical Safety, and 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 protected cable; Along with the development of Material Field, plastic pipe has been substituted original metal pipe material.
Electric power protecting pipe generally need to be applied in various severe environment, comprises seabed, snowfield and saline-alkali environment etc.Because environment for use is severe, need to carry out enhancing modified to plastic material, make it to there is higher ring stiffness, in order to resist extraneous load; Need to have stronger cold-resistant temperature capacity, and it is not yielding to be difficult for being corroded, the features such as long service life.Electric power protecting pipe of the prior art often exists various performances not have 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 runs into easy ruptural deformation under severe cold environment, 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
In order to overcome the chance extreme temperature that the electric power protecting pipe of prior art exists, be easily out of shape fracture, easily by soda acid microbiological corrosion, 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:
An electric power protecting pipe, its raw material by following weight parts is prepared from:
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, more than the particle diameter of talcum powder and Paris white is controlled at 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 preparation method who the invention also discloses above-mentioned electric power protecting pipe, comprises the steps:
(1) according to weight part, take above-mentioned each raw material for standby;
(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) mixture 1 step (2) being obtained is put in retort, and the temperature of retort is controlled at 50 ℃, adds silica gel edge stir with back, and stirring velocity is 100 revs/min, and churning time is 5 minutes, obtains mixture 2;
(4) mixture 2 step (3) being obtained, TDE, stearic acid, starch ethers, chitin, polycarbonate, Natvosol, polyvinyl alcohol and polyvinyl chloride are put in whizzer successively, 2000 turn/min centrifugal mixer 2-3 minute, after mixing, enter twin screw extruder and be squeezed into molten state, after forming machine is pulled out product, by cutting machine fixed length cutting, send into pipe-expanding machine, after enlarging completes, obtain above-mentioned electric power protecting pipe.
Electric power protecting pipe prepared by the present invention possesses following useful effect:
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 environments, has wide range of applications, and 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 regard the restriction to initiative spirit of the present invention as.
Embodiment 1
An electric power protecting pipe, its raw material by following weight parts is prepared from:
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 particle diameter of talcum powder and Paris white is controlled 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) according to weight part, take above-mentioned each raw material for standby;
(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) mixture 1 step (2) being obtained is put in retort, and the temperature of retort is controlled at 50 ℃, adds silica gel edge stir with back, and stirring velocity is 100 revs/min, and churning time is 5 minutes, obtains mixture 2;
(4) mixture 2 step (3) being obtained, TDE, stearic acid, starch ethers, chitin, polycarbonate, Natvosol, polyvinyl alcohol and polyvinyl chloride are put in whizzer successively, 2000 turn/min centrifugal mixers 2 minutes, after mixing, enter twin screw extruder and be squeezed into molten state, after forming machine is pulled out product, by cutting machine fixed length cutting, send into pipe-expanding machine, after enlarging completes, obtain above-mentioned electric power protecting pipe.
Embodiment 2
An electric power protecting pipe, its raw material by following weight parts is prepared from:
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 particle diameter of talcum powder and Paris white is controlled at 500 orders.
The preparation method of above-mentioned electric power protecting pipe, comprises the steps:
(1) according to weight part, take above-mentioned each raw material for standby;
(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) mixture 1 step (2) being obtained is put in retort, and the temperature of retort is controlled at 50 ℃, adds silica gel edge stir with back, and stirring velocity is 100 revs/min, and churning time is 5 minutes, obtains mixture 2;
(4) mixture 2 step (3) being obtained, TDE, stearic acid, starch ethers, chitin, polycarbonate, Natvosol, polyvinyl alcohol and polyvinyl chloride are put in whizzer successively, 2000 turn/min centrifugal mixers 3 minutes, after mixing, enter twin screw extruder and be squeezed into molten state, after forming machine is pulled out product, by cutting machine fixed length cutting, send into pipe-expanding machine, after enlarging completes, obtain above-mentioned electric power protecting pipe.
Embodiment 3
The various performance parameters of electric power protecting pipe prepared by the present invention is measured: with external diameter 100mm, and wall thickness 5mm, length 10m is example.Tensile strength, flexural strength, bus hardness, thermal conductivity and oxygen index be 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 is soaked in 10% sodium chloride solution to 30 days, tensile strength has only declined 1%, and flexural strength has declined 3%, and bus hardness has declined 2%.
Heat-resisting test: test sample is put into boiling water and boil 1 hour, without distortion and the appearance of bubbling, tensile strength, flexural strength and bus hardness retain more than 90%, possess good resistance toheat.
Cold-resistant test: test sample is placed at-50 ℃ 60 days, leakless occurs, tensile strength, flexural strength and bus hardness retain more than 92%.
Finally, it is also to be noted that, what more than enumerate is only several specific embodiments of the present invention.Obviously, the invention is not restricted to above embodiment, can also have many distortion.All distortion that those of ordinary skill in the art can directly derive or associate from content disclosed by the invention, all should think protection scope of the present invention.
Claims (3)
1. an electric power protecting pipe, its raw material by following weight parts is prepared from:
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, more than the particle diameter of talcum powder and Paris white is controlled at 300 orders.
2. protecting pipe as claimed in claim 1, is characterized in that, the preparation method of described protecting pipe comprises the steps:
(1) according to weight part, take above-mentioned each raw material for standby;
(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) mixture 1 step (2) being obtained is put in retort, and the temperature of retort is controlled at 50 ℃, adds silica gel edge stir with back, and stirring velocity is 100 revs/min, and churning time is 5 minutes, obtains mixture 2;
(4) mixture 2 step (3) being obtained, TDE, stearic acid, starch ethers, chitin, polycarbonate, Natvosol, polyvinyl alcohol and polyvinyl chloride are put in whizzer successively, 2000 turn/min centrifugal mixer 2-3 minute, after mixing, enter twin screw extruder and be squeezed into molten state, after forming machine is pulled out product, by cutting machine fixed length cutting, send into pipe-expanding machine, after enlarging completes and get final product.
3. electric power protecting pipe as claimed in claim 1, 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 |
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|---|---|---|---|
| CN201310754814.XA CN103724879B (en) | 2013-12-31 | 2013-12-31 | A kind of electric power protecting pipe and preparation method thereof |
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| CN103724879A true CN103724879A (en) | 2014-04-16 |
| CN103724879B CN103724879B (en) | 2015-10-14 |
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Cited By (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 |
| 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 |
| CN106243549A (en) * | 2016-07-28 | 2016-12-21 | 缪琼华 | A kind of cellulose and preparation method thereof |
| CN106633464A (en) * | 2015-11-01 | 2017-05-10 | 国网山东省电力公司临沂供电公司 | Insulation shield for anti-lightning insulator |
| 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 |
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| 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 |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
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Cited By (11)
| 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 |
| CN106633464A (en) * | 2015-11-01 | 2017-05-10 | 国网山东省电力公司临沂供电公司 | Insulation shield for anti-lightning insulator |
| 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 |
| CN106243549A (en) * | 2016-07-28 | 2016-12-21 | 缪琼华 | A kind of cellulose and preparation method thereof |
| CN106243549B (en) * | 2016-07-28 | 2018-05-15 | 山东沃尔塑胶制品有限公司 | A kind of cellulose 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 |
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| CN103724879B (en) | 2015-10-14 |
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