CN101114764B - Modified polypropylene cable protection tube for non-digging direct-buried mode - Google Patents
Modified polypropylene cable protection tube for non-digging direct-buried mode Download PDFInfo
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- CN101114764B CN101114764B CN2006100294087A CN200610029408A CN101114764B CN 101114764 B CN101114764 B CN 101114764B CN 2006100294087 A CN2006100294087 A CN 2006100294087A CN 200610029408 A CN200610029408 A CN 200610029408A CN 101114764 B CN101114764 B CN 101114764B
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- direct
- modified polypropylene
- cable protection
- protection tube
- buried mode
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Abstract
The invention discloses a cable protective tube of modified polypropylene used in the way of non-excavating and direct-burying, the raw material composition of which comprises polypropylene, high pressure low density polyethylene, pigments, ethylene-vinyl acetate, calcium carbonate and rosin. The high pressure low density polyethylene and the calcium carbonate added into a recipe can enhance the toughness and hardness of the material, which not only leads to the power cable protective tube meeting the requirement of non excavating and direct-burying construction, but also enhances obviously the service performance and the service life of the tubes.
Description
Technical field
The present invention relates to the power cable technology, particularly relate to the modified polypropylene cable protection tube that non-digging direct-buried mode is used.
Background technology
Along with the needs of power industry and urban construction and development, overhead transmission line changes into from underfloor cabling, and adopts the method for non-digging direct-buried mode cable laying more and more to receive an acclaim and pay attention to.Comprise the push pipe operation in the non-digging direct-buried construction method, thereby this operation directly forms cable tray underground power cable protecting pipe is headed into towards direction initialization.The push pipe operation requires cable protection pipe to have the performance requirement that adapts with construction method, and promptly cable protection pipe should have compression strength, anti-bending strength preferably, does not fracture, does not ftracture.Existing power cable protecting pipe adopts plain polypropylene to manufacture and forms; because polypropylene has the characteristics of black brittleness; the phenomenon that fractures the crack appears and in tubing easily under cryogenic conditions; adopt non-digging direct-buried construction method to bring a lot of inconvenience therefore for the power cable comb, construction quality and pipeline are difficult to be guaranteed useful life.
Summary of the invention
The purpose of this invention is to provide the modified polypropylene cable protection tube that a kind of non-digging direct-buried mode is used, its compression strength, anti-bending strength significantly improve, and are applicable to the non-digging direct-buried mode construction.
The present invention is achieved through the following technical solutions:
The modified polypropylene cable protection tube that a kind of non-digging direct-buried mode is used, its raw material composition comprises polypropylene and modified materials, it is characterized in that in the composition of raw materials that each composition and content thereof are:
Polypropylene 97,
Hp-ldpe 3,
Pigment a little,
Ethene-vinyl acetate 1～3,
Calcium carbonate 5～10,
Rosin 0.3.
Added hp-ldpe in the prescription of the present invention, can improve the toughness of material, thereby avoided improving the anti-bending strength of tubing because of polypropylene low temperature fragility easily produces crack and the phenomenon that fractures; Add calcium carbonate in the prescription and can improve the hardness of material, thereby help improving the compression strength of tubing.The raising of toughness of material and hardness not only makes power cable protecting pipe can satisfy the requirement of non-digging direct-buried mode construction, and the serviceability of tubing and life-span also are significantly improved.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
The invention will be further described below in conjunction with drawings and Examples.
Among Fig. 1, the wall thickness of present embodiment is
Millimeter, nominal outside diameter is
Each composition and content thereof are in its composition of raw materials:
Polypropylene 97,
Hp-ldpe 3,
Pigment a little,
Ethene-vinyl acetate 2,
Calcium carbonate 8,
Rosin 0.3.
After tested, the physical and mechanical property data of the modified polypropylene cable protection tube used of present embodiment non-digging direct-buried mode are as follows:
Density is 0.90～0.96g/cm
3The coefficient of sliding friction＜0.35; Bending strength 〉=34.0Mpa when ambient temperature is 23 ± 2 ℃; The modulus of elasticity in static bending 〉=900～1200Mpa; Hot strength 〉=22.0Mpa when ambient temperature is 23 ± 2 ℃; With reference to the falling weight impact test of GB/T6112-1985, ambient temperature is-5 ℃, reaches 9/10 time and does not break.
Claims (1)
1. modified polypropylene cable protection tube that non-digging direct-buried mode is used, its raw material composition comprises polypropylene and modified materials, it is characterized in that in the composition of raw materials that each composition and content thereof are:
Polypropylene 97,
Hp-ldpe 3,
Pigment a little,
Ethene-vinyl acetate 1～3,
Calcium carbonate 5～10,
Rosin 0.3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100294087A CN101114764B (en) | 2006-07-27 | 2006-07-27 | Modified polypropylene cable protection tube for non-digging direct-buried mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100294087A CN101114764B (en) | 2006-07-27 | 2006-07-27 | Modified polypropylene cable protection tube for non-digging direct-buried mode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101114764A CN101114764A (en) | 2008-01-30 |
| CN101114764B true CN101114764B (en) | 2010-09-15 |
Family
ID=39022945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006100294087A Expired - Fee Related CN101114764B (en) | 2006-07-27 | 2006-07-27 | Modified polypropylene cable protection tube for non-digging direct-buried mode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101114764B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105333264A (en) * | 2015-11-25 | 2016-02-17 | 山东胜邦塑胶有限公司 | Pipeline protection technology used for non-excavation penetration and urban old pipe network reconstruction |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103497289B (en) * | 2013-09-29 | 2016-01-20 | 华东理工大学 | The effective material of no-dig technique type cable protection and cable protection pipe |
| CN103878966A (en) * | 2014-03-13 | 2014-06-25 | 苏州科茂电子材料科技有限公司 | Preparation method of insulation body in radio-frequency coaxial cable |
| CN104072856A (en) * | 2014-06-27 | 2014-10-01 | 绿宝电缆（集团）有限公司 | Light-weight flexible cable material |
| CN104109284A (en) * | 2014-07-10 | 2014-10-22 | 宁国市东兴实业有限公司 | Modified polypropylene power cable protection pipe |
| NZ760136A (en) * | 2017-06-14 | 2022-07-01 | Premix Oy | Antimicrobial polymer composition |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1508925A (en) * | 2002-12-16 | 2004-06-30 | 宁波信高塑化有限公司 | Bushing tube for buried medium-high voltage power cable and production method thereof |
| CN1660930A (en) * | 2004-02-27 | 2005-08-31 | 上海电力设计院有限公司 | Non-excavated dedicated tubular goods in use for electric power |
| CN1696188A (en) * | 2005-03-07 | 2005-11-16 | 广东顾地塑胶股份有限公司 | Fire retardant composite material of polypropylene and application |
-
2006
- 2006-07-27 CN CN2006100294087A patent/CN101114764B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1508925A (en) * | 2002-12-16 | 2004-06-30 | 宁波信高塑化有限公司 | Bushing tube for buried medium-high voltage power cable and production method thereof |
| CN1660930A (en) * | 2004-02-27 | 2005-08-31 | 上海电力设计院有限公司 | Non-excavated dedicated tubular goods in use for electric power |
| CN1696188A (en) * | 2005-03-07 | 2005-11-16 | 广东顾地塑胶股份有限公司 | Fire retardant composite material of polypropylene and application |
Non-Patent Citations (2)
| Title |
|---|
| JP 特开2003-4178 A,全文. |
| JP特开2002-27631A 2002.01.25 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105333264A (en) * | 2015-11-25 | 2016-02-17 | 山东胜邦塑胶有限公司 | Pipeline protection technology used for non-excavation penetration and urban old pipe network reconstruction |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101114764A (en) | 2008-01-30 |
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| C06 | Publication | ||
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| C14 | Grant of patent or utility model | ||
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Denomination of invention: Modified polypropylene cable protection tube for non-digging direct-buried mode Effective date of registration: 20120104 Granted publication date: 20100915 Pledgee: Pudong Productivity Promotion Center, Shanghai Pledgor: Shanghai Jietong Pipes Industry Co., Ltd. Registration number: 2012990000007 |
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| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: Ge Jiechang Document name: Notice of termination of patent right |
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| 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: 20100915 Termination date: 20200727 |