CN108766645A - A kind of termite-proof cable - Google Patents
A kind of termite-proof cable Download PDFInfo
- Publication number
- CN108766645A CN108766645A CN201810613368.3A CN201810613368A CN108766645A CN 108766645 A CN108766645 A CN 108766645A CN 201810613368 A CN201810613368 A CN 201810613368A CN 108766645 A CN108766645 A CN 108766645A
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- China
- Prior art keywords
- termite
- proof
- cable
- layer
- proof layer
- 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.)
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/04—Flexible cables, conductors, or cords, e.g. trailing cables
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
- H01B7/2806—Protection against damage caused by corrosion
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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- Insulated Conductors (AREA)
Abstract
The invention discloses a kind of termite-proof cables, including termite-proof layer, termite-proof layer is arranged in the outside or inside of cable outermost layer sheath, the material of the termite-proof layer is polyethylene terephthalate, the present invention passes through in the cable using the termite-proof layer of pet material, to reach the termite-proof effect of cable, the performance characteristics that the structure (twining package tape, extruding layer etc.) that pet material is formed is rigidly high, hardness is big and the smoothness on surface is high, termite lower mouth of having no way of bites, termite-proof to achieve the purpose that.
Description
Technical field
The present invention relates to a kind of cable (including electric wire, cable), specifically a kind of termite-proof cable belongs to cable manufacturing skill
Art field.
Background technology
Termite is mainly distributed on 45 DEG C of tropical and subtropical region arrived between 45 DEG C of south latitude of north latitude.Danger of the termite to cable
Evil causes the concern of people already, and termite is a global problem to the destruction of buried cable and communication line.At abroad,
Just once report lead-covered cable was eaten into the example stung by termite within 1886.In China, the area in the area for having termite destruction cable is found
Mainly have：The ground such as Guangdong, Shanghai, Fujian, Taiwan, Jiangxi, Anhui, Zhejiang, Hunan, Sichuan, Yunnan, Hainan, Hubei, Guangxi.
By taking In Guangdong Province as an example, failure caused by being endangered according to statistics cable due to termite accounts for the 60%~70% of cable fault sum.
In order to ensure the safe and reliable operation of cable run, every in the area for having termite activity, cable should all take termite-proof arrange
It applies.
Existing anti-termite cable mainly uses following several patterns in industry：
1, chemical method is termite-proof, and chemical agent, such as Publication No. are mainly added in the sheath material of cable
A kind of environmental cable for preventing white ant disclosed in CN101587759A patent documents, such cable make termite in the close or cable that bites
It is killed or walks quickly and keeps away when oversheath.The repellent agent of addition low toxicity is currently mainly used, these materials are to rely on smell or contact
When stimulation to smell and sense of taste mucous membrane, it is termite-proof to achieve the purpose that play avoidance effect, but this kind of method is lacked there are many
Point：1) chemicals migration contained by sheath can cause environmental pollution.2) due to cable fuel factor, make the termite-proof medicine contained by sheath
Object aging, sustained release make the termite-proof reduced performance of cable, therefore cannot be guaranteed that the termite resistance of cable can be permanently effective.3) in cable
Termite-proof layer process in, give out pernicious gas and health hazard caused to the producer.4) toxicity and timeliness of protective agent
The conflicting development for constraining the method for property.
2, Physical is termite-proof, and termite-proof main Physical includes being prevented by wrapped realized with nylon extruding layer of brass band
Termite, the Anti-termite power cable as disclosed in the patent document that Authorization Notice No. is CN206471160U, including oversheath, outer shield
It is equipped with separation sleeve in set, termite-proof layer is equipped between separation sleeve and oversheath, termite-proof layer is brass band and/or nylon sheath wire.
1) brass band is wrapped, and the method is that the wrapped brass band not less than 0.1mm is overlapped in the sheath of cable.Due to Huang
The density of copper strips is about 8.89g/cm3, dosage is larger, and cost is high, and production efficiency is low, and the appearance of finished product is also easy to show
Type, unsightly.In addition to this, if outer jacket by termite once stung bad, brass band is chronically exposed in environment, is easily corroded,
After being corroded, it will cable is caused to lose termite-resisting function.
2) nylon extruding layer, the method are to squeeze out nylon of the one layer of thinnest point not less than 0.2mm in the structure of cable to squeeze
Go out layer, it is smooth termite-proof to achieve the purpose that by the high rigidity of nylon and surface.But it squeezes out nylon material to have the disadvantage that：
1, for nylon 12 material price about in 130 yuan of per kilograms, price is particularly expensive, and cable cost can be caused excessively high.2, for outer diameter compared with
Big cable product can only carry out extrusion nylon layer on large-scale sheathing machine, therefore it is thick to control thinnest point 0.2mm
The nylon layer of degree is very difficult.3, nylon 12 is polar molecule material, easy to absorb moisture, when humidity is more than 0.3%
It can not just squeeze out.4, nylon material belongs to temperature jump proximate matter material, and fusing point is high, and extrusion temperature range is especially narrow, has apparent molten
Point, about 180 DEG C or so, temperature is excessively high to cause material incipient scorch, it is also possible to cause the nylon material shape that is in a liquid state that can not squeeze out.Temperature
The too low meeting of nylon 12 condensation cured causes mold to block.And the extrusion temperature deviation of the nylon material of different suppliers is also larger,
It is not easy to control.5, nylon material melt viscosity is small, and mobility is big, so also needing the screw rod for being equipped with special designing in process of production
It just can guarantee that it squeezes out effect.6, since the material hardness of nylon 12 is higher, the bending property of cable is centainly influenced, therefore
The minimum bending radius design of cable will be limited when producing, transport, installing and using.
Invention content
The object of the present invention is to provide a kind of termite-proof cable, which can effectively solve the problems, such as termite damage.
In order to reach above-mentioned technical purpose, the technical scheme is that：
The material of a kind of termite-proof cable, including termite-proof layer, the termite-proof layer is polyethylene terephthalate.
The present invention is by the termite-proof layer using pet material in cable, to reach cable
Termite-proof effect.The rigid high, hardness of structure (band clad, extruding layer etc.) that pet material is formed
Greatly and the high performance characteristics of the smoothness on surface, termite lower mouth of having no way of bites, termite-proof to achieve the purpose that.
PET (polyethylene terephthalate) is highly crystalline type polymer, and relative molecular mass is 20000~30000,
Fusing point is 260 DEG C, and glass transition temperature is 80 DEG C, there is excellent mechanical property.PET polyester films are thermoplastic films
Middle mechanical strength and the best one kind of toughness, impact strength is high, rub resistance, there is good creep resistant, and rigidity is high, and hardness is big,
Surface flatness is high, and has water imbibition very little, and good stability of the dimension can keep excellent physics within the scope of wider temperature
Mechanical property can be used for a long time at 120~130 DEG C, still flexible in -100 DEG C to lower temperature.
A kind of set-up mode of termite-proof layer is：The cable includes outermost sheath (external sheath layer of such as cable, electricity
The external insulation layer of line), the termite-proof layer is arranged on the inside of sheath.
Another set-up mode of termite-proof layer is：The cable includes outermost sheath, the termite-proof layer setting
Outside sheath.
In order to protect termite-proof layer, environmental damage is avoided, sacrificial layer is provided with outside the termite-proof layer.Preferably, institute
The material for stating sacrificial layer is identical as jacket material.
A kind of generation type of termite-proof layer：The termite-proof layer coats to be formed by band, and the band material is poly-
Ethylene glycol terephthalate, coverage rate >=100% of the cladding band.Such as the wrapped formation of twining package tape, the wrapped band
Material is polyethylene terephthalate, coverage rate >=100% of the twining package tape；As the termite-proof layer passes through band longitudinal wrap
It is formed, the band material is polyethylene terephthalate.
(polyethylene terephthalate is formed the PET polyester layers that the present invention uses, that is, forms the band of termite-proof layer
Layer) surface answers bright and clean, should not there are the fouls such as particle, bubble, crackle, fold, conductive impurity and dirt, oil stain, film edge
Should be neat, no breakage.
Another generation type of termite-proof layer：The termite-proof layer is formed by expressing technique.
The advantageous effects of the present invention：
1, with the termite-proof comparison of chemical method
1) termite-proof cable of the invention is not using the chemistry addition medicament such as repellent agent of low toxicity, but uses poly- to benzene
Naphthalate is coated or is squeezed out form by band to reach termite-proof effect, therefore there is no chemicals to migrate institute
Caused by environmental pollution.
2) termite-proof cable of the invention is not using the chemistry addition medicament such as repellent agent of low toxicity, and there is no due to cable
Fuel factor makes the termite-proof drug aging contained by sheath, is sustained, makes the termite-proof reduced performance of cable, to cause cable anti-white
Ant performance failure situation.
3) termite-proof cable of the invention is not using the chemistry addition medicament such as repellent agent of low toxicity, in process,
The case where pernicious gas causes health hazard to the producer will not be given out.
4) termite-proof cable of the invention is not using the chemistry addition medicament such as repellent agent of low toxicity, and there is no protective agents
The contradiction that toxicity and timeliness mutually restrict.
2, with the termite-proof comparison of Physical
1) termite-proof cable of the invention avoids using using the termite-proof layer of pet material
Caused by brass band is wrapped of high cost, low production efficiency, the appearance of finished product unsightly the problems such as.In addition to this, gather to benzene two
There is no lead to termite-proof performance failure to the termite-proof layer of formic acid glycol ester material after metal erosion.
2) termite-proof cable of the invention efficiently solves the defect termite-proof by squeezing out nylon layer, specific as follows：
A, cost of the cost of pet material well below nylon material.
B, it is directed to big outer diameter product, termite-proof layer can coat to be formed by band, therefore there is no squeeze out difficult feelings
Condition, and the termite-proof layer for controlling thinnest point 0.2mm thickness is very easy to.
C, the water imbibition very little of pet material is not easy the moisture absorption, and humidity is not more than 0.3%, no
It can influence processing performance.
D, termite-proof layer coats to be formed by band, and there is no the processing problems such as extrusion temperature is narrow of nylon material.
E, termite-proof layer is coated or is extruded by band, need not individually be equipped with special installation.
F, termite-proof layer is coated or is extruded by band, since pet material has well
Toughness, it is still flexible in -100 DEG C of even lower temperature, therefore do not interfere with the integrally bending performance of product.
Description of the drawings
Fig. 1 is an embodiment of the present invention schematic diagram.
Fig. 2 is another embodiment schematic diagram of the present invention.
Specific implementation mode
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
Embodiment 1
As shown in Figure 1, a kind of anti-termite cable (existing construction of cable), including cable core 1, outermost oversheath 2 etc.
Level, termite-proof layer 3 are arranged outside the oversheath 2 of cable, and the material of the termite-proof layer 3 is polyethylene terephthalate
Ester.The termite-proof layer 3 forms (or other cladding forms, as longitudinal wrap is formed), the wrapped band by the way that twining package tape is wrapped
Material is polyethylene terephthalate, coverage rate >=100% of the twining package tape.Wrapped, longitudinal wrap technique uses the prior art
In technique, the present invention do not limit.Wrapped, longitudinal wrap the thickness present invention does not also limit, and can achieve the object of the present invention
?.
In order to protect termite-proof layer 3, environmental damage is avoided, sacrificial layer 4 is provided with outside the termite-proof layer 3.The sacrifice
The material of layer 4 and 2 material identical of oversheath, the thickness of sacrificial layer 4 are unlimited.
It answers on wrapped belt (PET polyester layers, material the are polyethylene terephthalate) surface for forming termite-proof layer 3
It is bright and clean, should not there are the fouls such as particle, bubble, crackle, fold, conductive impurity and dirt, oil stain, film edge should be neat, nothing
It is damaged.
Embodiment 2
As shown in Figure 1, a kind of anti-termite cable (existing construction of cable), including cable core 1, outermost oversheath 2 etc.
Level, termite-proof layer 3 are arranged outside the oversheath 2 of cable, and the material of the termite-proof layer 3 is polyethylene terephthalate
Ester, the termite-proof layer 3 are formed by existing expressing technique.
In order to protect termite-proof layer 3, environmental damage is avoided, sacrificial layer 4 is provided with outside the termite-proof layer 3.The sacrifice
The material of layer 4 and 2 material identical of oversheath, the thickness of sacrificial layer 4 are unlimited.
Embodiment 3
As shown in Fig. 2, a kind of anti-termite cable (existing construction of cable), including cable core 1, outermost oversheath 2 etc.
Level, termite-proof layer 3 is arranged (to be arranged between the oversheath 2 and other levels of cable in 2 inside of oversheath of cable.It should
Structure does not limit the invention, and such as setting at this time can not protect the level outside it other layer of inside),
The material of the termite-proof layer 3 is polyethylene terephthalate.The termite-proof layer 3 by twining package tape it is wrapped formed (or
It is other cladding forms, as longitudinal wrap is formed), the wrapped carrying material is polyethylene terephthalate, the twining package tape
Coverage rate >=100%.Around-packing technology (or other cladding process such as longitudinal wrap) uses around-packing technology in the prior art, and the present invention is not
It limits.The thickness present invention of wrapped (or longitudinal wrap etc.) does not also limit, and can achieve the object of the present invention.
It answers on wrapped belt (PET polyester layers, material the are polyethylene terephthalate) surface for forming termite-proof layer 3
It is bright and clean, should not there are the fouls such as particle, bubble, crackle, fold, conductive impurity and dirt, oil stain, film edge should be neat, nothing
It is damaged.
Or the termite-proof layer is formed by band longitudinal wrap.
Embodiment 4
As shown in Fig. 2, a kind of anti-termite cable (existing construction of cable), including cable core 1, outermost oversheath 2 etc.
Level, termite-proof layer 3 is arranged (to be arranged between the oversheath 2 and other levels of cable in 2 inside of oversheath of cable.It should
Structure does not limit the invention, and such as setting at this time can not protect the level outside it other layer of inside),
The material of the termite-proof layer 3 is polyethylene terephthalate, and the termite-proof layer 3 passes through existing expressing technique shape
At.
Above-described embodiment 1-4 is similarly suitble to electric wire, and the outermost sheath of electric wire is the insulating layer of electric wire outer layer at this time.
Fig. 1,2 be only cable schematic diagram, the level in figure do not represent the actual result of cable, cable knot of the invention
Structure is the structure of cable in the prior art, you can to include other levels.
Above-described embodiment is not limit the invention in any way, every to be obtained by the way of equivalent substitution or equivalent transformation
Technical solution all fall in protection scope of the present invention.
Claims (7)
1. a kind of termite-proof cable, including termite-proof layer, it is characterised in that：The material of the termite-proof layer is poly terephthalic acid
Glycol ester.
2. a kind of termite-proof cable according to claim 1, it is characterised in that：The cable includes outermost sheath,
The termite-proof layer is arranged on the inside of sheath.
3. a kind of termite-proof cable according to claim 1, it is characterised in that：The cable includes outermost sheath,
The termite-proof layer is arranged outside sheath.
4. a kind of termite-proof cable according to claim 3, it is characterised in that：It is provided with sacrifice outside the termite-proof layer
Layer.
5. a kind of termite-proof cable according to claim 4, it is characterised in that：The material and jacket material of the sacrificial layer
It is identical.
6. according to a kind of termite-proof cable of claim 1-5 any one of them, it is characterised in that：The termite-proof layer passes through packet
Band cladding is formed, and the band material is polyethylene terephthalate, coverage rate >=100% of the cladding band.
7. according to a kind of termite-proof cable of claim 1-5 any one of them, it is characterised in that：The termite-proof layer is by squeezing
Go out technique to be formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810613368.3A CN108766645A (en) | 2018-06-14 | 2018-06-14 | A kind of termite-proof cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810613368.3A CN108766645A (en) | 2018-06-14 | 2018-06-14 | A kind of termite-proof cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108766645A true CN108766645A (en) | 2018-11-06 |
Family
ID=64021758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810613368.3A Pending CN108766645A (en) | 2018-06-14 | 2018-06-14 | A kind of termite-proof cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108766645A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2011253718A1 (en) * | 2010-12-21 | 2012-07-05 | Nexans | A Termite Barrier and Cable Including the Barrier |
| CN103881372A (en) * | 2012-12-21 | 2014-06-25 | 苏州翰普高分子材料有限公司 | Termite-resistant cable sheath polyamide composition, cable sheath, production method and use |
| CN104221095A (en) * | 2012-12-21 | 2014-12-17 | 阿克马法国公司 | Anti termite cable sheathing comprising an aliphatic polyamide x.y with x+y>18, an uv absorber and/or uv stabilizer, and an antioxidant |
-
2018
- 2018-06-14 CN CN201810613368.3A patent/CN108766645A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2011253718A1 (en) * | 2010-12-21 | 2012-07-05 | Nexans | A Termite Barrier and Cable Including the Barrier |
| CN103881372A (en) * | 2012-12-21 | 2014-06-25 | 苏州翰普高分子材料有限公司 | Termite-resistant cable sheath polyamide composition, cable sheath, production method and use |
| CN104221095A (en) * | 2012-12-21 | 2014-12-17 | 阿克马法国公司 | Anti termite cable sheathing comprising an aliphatic polyamide x.y with x+y>18, an uv absorber and/or uv stabilizer, and an antioxidant |
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Application publication date: 20181106 |