CN105778300A - Underground power cable sheath tube - Google Patents
Underground power cable sheath tube Download PDFInfo
- Publication number
- CN105778300A CN105778300A CN201610151101.8A CN201610151101A CN105778300A CN 105778300 A CN105778300 A CN 105778300A CN 201610151101 A CN201610151101 A CN 201610151101A CN 105778300 A CN105778300 A CN 105778300A
- Authority
- CN
- China
- Prior art keywords
- compound
- kaolin
- silicon carbide
- quartz sand
- magnesium hydroxide
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/16—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
-
- 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
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; 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
- H01B7/17—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
- H01B7/282—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Laying Of Electric Cables Or Lines Outside (AREA)
Abstract
The invention belongs to the field of power materials and discloses an underground power cable sheath tube. The underground power cable sheath tube is prepared from kaolin, magnesium hydroxide, tert-butyl peroxybenzoate, calcium stearate, N,N-dimethylaminoethyl acrylate, zeolite, sodium humate, triphenyl phosphate, polyvinylpyrrolidone, nanometer silicon carbide, sepiolite, brucite, aluminum nitride, quartz sand, phenolic resin, polyethylene and ethylene-propylene-diene monomer. The underground power cable sheath tube is simple and feasible in preparation technology, low in raw material cost and high in corrosion resistance and mechanical strength.
Description
Technical field
The invention belongs to electric power Material Field, disclose a kind of underground electric power cable sheath tube.
Background technology
Buried cable, compares with common aerial line, and Yin Qichang is embedded in underground, therefore also known as buried cable.Cable is made up of conductor outsourcing insulation and the protective layer of one or more mutually insulated, for by electric power or information from a wire being delivered to another place.Buried cable is different from overhead high-tension line, and cable is often layed in cable duct, tunnel, pipeline or indoor.
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 thermal enlargement the two technique; there is thermal contraction function; shrinkage ratio is about 3:1; bore from 50-350mm not etc., can be used as the pyrocondensation inner sheath in cable accessory, oversheath and outer layer insulation water-proof jacket pipe.The main uses of electric power protecting pipe is used as cable cover(ing), and protection cable is not damaged by the external world, it is ensured that Electrical Safety, electric power protecting pipe is divided into buried and ground type.Eighties of last century is generally adopted protecting pipe prepared by metal material to protect cable；Along with the development of Material Field, plastic pipe instead of original metal pipe material.Electric power protecting pipe is it is generally required to be applied in various adverse circumstances, including underground, seabed, snowfield and saline-alkali environment etc..Owing to using bad environments, it is necessary to plastic material is carried out enhancing modified, so as to have higher ring stiffness, in order to resist extraneous load；Need stronger cold-resistant temperature capacity, and be not easily corroded and be unlikely to deform, the feature such as long service life.
Summary of the invention
In order to overcome what the electric power protecting pipe of prior art existed to be easily deformed fracture, it is easy to by soda acid microbiologic(al) corrosion, stretching-resisting bending-resisting intensity difference, cost of material is high and the defect such as complicated process of preparation；The invention discloses a kind of underground electric power cable sheath tube, this electric power protecting pipe possesses good performance, it is possible to be widely used in industrialized production.
For achieving the above object, the technical solution adopted in the present invention is as follows:
A kind of underground electric power cable sheath tube, it is prepared by following raw material and obtains:
Kaolin, magnesium hydroxide, peroxidized t-butyl perbenzoate, calcium stearate, dimethylaminoethyl acrylate, zeolite, sodium humate, triphenyl phosphate, polyvinylpyrrolidone, nanometer silicon carbide, meerschaum, shepardite, aluminium nitride, quartz sand, phenolic resin, polyethylene, ethylene propylene diene rubber.
Specifically, it is prepared by the raw material of following weight portion and obtains:
Kaolin 1-2 part, magnesium hydroxide 1-2 part, peroxidized t-butyl perbenzoate 1-2 part, calcium stearate 2-3 part, dimethylaminoethyl acrylate 2-3 part, zeolite 2-3 part, sodium humate 3-5 part, triphenyl phosphate 3-5 part, polyvinylpyrrolidone 3-5 part, nanometer silicon carbide 3-5 part, meerschaum 4-6 part, shepardite 4-6 part, aluminium nitride 5-7 part, quartz sand 7-10 part, phenolic resin 20-30 part, polyethylene 40-70 part, ethylene propylene diene rubber 60-100 part.
The preparation technology of above-mentioned protecting pipe comprises the steps:
1) add Kaolin, magnesium hydroxide, dimethylaminoethyl acrylate and triphenyl phosphate to high speed dispersor, be uniformly mixed, obtain compound A；
2) zeolite, meerschaum and shepardite are added in disintegrating machine crush, be then ground, obtain the powder that particle diameter is 100-200um, be compound B；
3) adding in polyvinylpyrrolidone by nanometer silicon carbide, 200 turns/min stirs 3min, be subsequently placed in temperature be 50 DEG C, relative humidity be 80% hygrothermal environment in 6 hours, be finally cooled to room temperature, obtain compound C；
4) calcium stearate, sodium humate, aluminium nitride and quartz sand being put into successively in retort, retort temperature controls at 60 DEG C, and mixing time is 10min, and mixing speed is 300 turns/min, obtains compound D；
5) by peroxidized t-butyl perbenzoate, phenolic resin, polyethylene and ethylene propylene diene rubber, mix homogeneously, add banbury, the banburying time is 5 minutes, and banburying temperature is 90 DEG C, obtains compound E；
6) compound A, compound B, compound C, compound D and compound E are put in centrifuge successively, 1000 turns/min centrifugal mixer 5 minutes, after mix homogeneously, enter double screw extruder and be squeezed into molten condition, then after product is pulled out by forming machine, by cutting machine fixed length cutting, send into pipe-expanding machine, after enlarging completes and get final product.
Preferably, Kaolin, magnesium hydroxide, calcium stearate, sodium humate, aluminium nitride, quartz sand particle diameter be 100-200um；The particle diameter of nanometer silicon carbide is 50-100nm.
The beneficial effect that the present invention obtains specifically includes that
Underground cable sheath tube prepared by the present invention possesses following beneficial effect:
Underground cable sheath tube prepared by the present invention possesses good decay resistance, water resistance, mechanical strength, bus hardness and heat conductivity；Resin material has been modifiied by the present invention, and material combination is reasonable, substantially increases the performance of resin；Nanometer silicon carbide has been modifiied by the present invention, improves the compatibility of itself and resin material；The appropriate interpolation of the material such as aluminium nitride, quartz sand, substantially increases the mechanical performance of modified resin；This protecting pipe possesses the heat-resisting cold tolerance of good salt tolerant, it is possible to is used in various undergrounds extreme environment, has wide range of applications, and buried cable is played the effect of being effectively protected by long service life；Preparation method of the present invention is simple, with low cost, possesses good application prospect.
Detailed description of the invention
In order to make those skilled in the art be more fully understood that the technical scheme in the application, below in conjunction with the application specific embodiment, the present invention is carried out clearly, is fully described by, it is clear that, described embodiment is only some embodiments of the present application, rather than whole embodiments.Based on the embodiment in the application, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, all should belong to the scope of protection of the invention.
Embodiment 1
A kind of underground electric power cable sheath tube, it is prepared by the raw material of following weight portion and obtains:
Kaolin 1 part, 1 part of magnesium hydroxide, peroxidized t-butyl perbenzoate 1 part, calcium stearate 2 parts, dimethylaminoethyl acrylate 2 parts, 2 parts of zeolite, sodium humate 3 parts, triphenyl phosphate 3 parts, polyvinylpyrrolidone 3 parts, nanometer silicon carbide 3 parts, meerschaum 4 parts, shepardite 4 parts, aluminium nitride 5 parts, quartz sand 7 parts, 20 parts of phenolic resin, polyethylene 40 parts, ethylene propylene diene rubber 60 parts.
The preparation technology of above-mentioned protecting pipe comprises the steps:
1) add Kaolin, magnesium hydroxide, dimethylaminoethyl acrylate and triphenyl phosphate to high speed dispersor, be uniformly mixed, obtain compound A；
2) zeolite, meerschaum and shepardite are added in disintegrating machine crush, be then ground, obtain the powder that particle diameter is 100um, be compound B；
3) adding in polyvinylpyrrolidone by nanometer silicon carbide, 200 turns/min stirs 3min, be subsequently placed in temperature be 50 DEG C, relative humidity be 80% hygrothermal environment in 6 hours, be finally cooled to room temperature, obtain compound C；
4) calcium stearate, sodium humate, aluminium nitride and quartz sand being put into successively in retort, retort temperature controls at 60 DEG C, and mixing time is 10min, and mixing speed is 300 turns/min, obtains compound D；
5) by peroxidized t-butyl perbenzoate, phenolic resin, polyethylene and ethylene propylene diene rubber, mix homogeneously, add banbury, the banburying time is 5 minutes, and banburying temperature is 90 DEG C, obtains compound E；
6) compound A, compound B, compound C, compound D and compound E are put in centrifuge successively, 1000 turns/min centrifugal mixer 5 minutes, after mix homogeneously, enter double screw extruder and be squeezed into molten condition, then after product is pulled out by forming machine, by cutting machine fixed length cutting, send into pipe-expanding machine, after enlarging completes and get final product.
Wherein, Kaolin, magnesium hydroxide, calcium stearate, sodium humate, aluminium nitride, quartz sand particle diameter be 100um；The particle diameter of nanometer silicon carbide is 50nm.
Embodiment 2
A kind of underground electric power cable sheath tube, it is prepared by the raw material of following weight portion and obtains:
Kaolin 2 parts, 2 parts of magnesium hydroxide, peroxidized t-butyl perbenzoate 2 parts, calcium stearate 3 parts, dimethylaminoethyl acrylate 3 parts, 3 parts of zeolite, sodium humate 5 parts, triphenyl phosphate 5 parts, polyvinylpyrrolidone 5 parts, nanometer silicon carbide 5 parts, meerschaum 6 parts, shepardite 6 parts, aluminium nitride 7 parts, quartz sand 10 parts, 30 parts of phenolic resin, polyethylene 70 parts, ethylene propylene diene rubber 100 parts.
The preparation technology of above-mentioned protecting pipe comprises the steps:
1) add Kaolin, magnesium hydroxide, dimethylaminoethyl acrylate and triphenyl phosphate to high speed dispersor, be uniformly mixed, obtain compound A；
2) zeolite, meerschaum and shepardite are added in disintegrating machine crush, be then ground, obtain the powder that particle diameter is 100-200um, be compound B；
3) adding in polyvinylpyrrolidone by nanometer silicon carbide, 200 turns/min stirs 3min, be subsequently placed in temperature be 50 DEG C, relative humidity be 80% hygrothermal environment in 6 hours, be finally cooled to room temperature, obtain compound C；
4) calcium stearate, sodium humate, aluminium nitride and quartz sand being put into successively in retort, retort temperature controls at 60 DEG C, and mixing time is 10min, and mixing speed is 300 turns/min, obtains compound D；
5) by peroxidized t-butyl perbenzoate, phenolic resin, polyethylene and ethylene propylene diene rubber, mix homogeneously, add banbury, the banburying time is 5 minutes, and banburying temperature is 90 DEG C, obtains compound E；
6) compound A, compound B, compound C, compound D and compound E are put in centrifuge successively, 1000 turns/min centrifugal mixer 5 minutes, after mix homogeneously, enter double screw extruder and be squeezed into molten condition, then after product is pulled out by forming machine, by cutting machine fixed length cutting, send into pipe-expanding machine, after enlarging completes and get final product.
Wherein, Kaolin, magnesium hydroxide, calcium stearate, sodium humate, aluminium nitride, quartz sand particle diameter be 200um；The particle diameter of nanometer silicon carbide is 100nm.
Embodiment 3
The various performance parameters of protecting pipe of the present invention measures: be example with external diameter 100mm, wall thickness 5mm, length 10m.Hot strength, bending strength, bus hardness and heat conductivity respectively refer to GB/T1458, GB/T1449, GB/T3854, GB/T5990.Concrete outcome is in Table 1.
Table 1
| Group | Hot strength Mpa | Bending strength Mpa | Bus hardness | Heat conductivity W/m.K |
| Embodiment 1 | 227 | 253 | 51 | 0.63 |
| Embodiment 2 | 211 | 246 | 53 | 0.66 |
Salt tolerance: be soaked in the sodium chloride solution of 8% by test material 60 days, hot strength only have dropped 1.2%, and bending strength have dropped 2.3%, and bus hardness have dropped 1.7%.
Resistance to Thermal test: put into by test specimen in boiling water and boil 1 hour, without deformation and appearance of bubbling, hot strength, bending strength and bus hardness retain more than 95%, possess good heat resistance.
Cold-resistant test: at test specimen is placed in-60 DEG C 90 days, free from flaw occurs, hot strength, bending strength and bus hardness retain more than 90%.
Finally, in addition it is also necessary to be only several specific embodiments of the present invention it is noted that listed above.It is clear that the invention is not restricted to above example, it is also possible to there are many deformation.All deformation that those of ordinary skill in the art can directly derive from present disclosure or associate, are all considered as protection scope of the present invention.
Claims (4)
1. a underground electric power cable sheath tube, it is prepared by following raw material and obtains:
Kaolin, magnesium hydroxide, peroxidized t-butyl perbenzoate, calcium stearate, dimethylaminoethyl acrylate, zeolite, sodium humate, triphenyl phosphate, polyvinylpyrrolidone, nanometer silicon carbide, meerschaum, shepardite, aluminium nitride, quartz sand, phenolic resin, polyethylene, ethylene propylene diene rubber.
2. protecting pipe according to claim 1, it is characterised in that described protecting pipe is prepared by the raw material of following weight portion and obtained:
Kaolin 1-2 part, magnesium hydroxide 1-2 part, peroxidized t-butyl perbenzoate 1-2 part, calcium stearate 2-3 part, dimethylaminoethyl acrylate 2-3 part, zeolite 2-3 part, sodium humate 3-5 part, triphenyl phosphate 3-5 part, polyvinylpyrrolidone 3-5 part, nanometer silicon carbide 3-5 part, meerschaum 4-6 part, shepardite 4-6 part, aluminium nitride 5-7 part, quartz sand 7-10 part, phenolic resin 20-30 part, polyethylene 40-70 part, ethylene propylene diene rubber 60-100 part.
3. the protecting pipe according to claim 1-2, it is characterised in that the preparation technology of described protecting pipe comprises the steps:
1) add Kaolin, magnesium hydroxide, dimethylaminoethyl acrylate and triphenyl phosphate to high speed dispersor, be uniformly mixed, obtain compound A；
2) zeolite, meerschaum and shepardite are added in disintegrating machine crush, be then ground, obtain the powder that particle diameter is 100-200um, be compound B；
3) adding in polyvinylpyrrolidone by nanometer silicon carbide, 200 turns/min stirs 3min, be subsequently placed in temperature be 50 DEG C, relative humidity be 80% hygrothermal environment in 6 hours, be finally cooled to room temperature, obtain compound C；
4) calcium stearate, sodium humate, aluminium nitride and quartz sand being put into successively in retort, retort temperature controls at 60 DEG C, and mixing time is 10min, and mixing speed is 300 turns/min, obtains compound D；
5) by peroxidized t-butyl perbenzoate, phenolic resin, polyethylene and ethylene propylene diene rubber, mix homogeneously, add banbury, the banburying time is 5 minutes, and banburying temperature is 90 DEG C, obtains compound E；
6) compound A, compound B, compound C, compound D and compound E are put in centrifuge successively, 1000 turns/min centrifugal mixer 5 minutes, after mix homogeneously, enter double screw extruder and be squeezed into molten condition, then after product is pulled out by forming machine, by cutting machine fixed length cutting, send into pipe-expanding machine, after enlarging completes and get final product.
4. the protecting pipe according to claim 1-3, it is characterised in that preferably, the particle diameter of described Kaolin, magnesium hydroxide, calcium stearate, sodium humate, aluminium nitride and quartz sand is 100-200um；The particle diameter of described nanometer silicon carbide is 50-100nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610151101.8A CN105778300A (en) | 2016-03-16 | 2016-03-16 | Underground power cable sheath tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610151101.8A CN105778300A (en) | 2016-03-16 | 2016-03-16 | Underground power cable sheath tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105778300A true CN105778300A (en) | 2016-07-20 |
Family
ID=56392948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610151101.8A Pending CN105778300A (en) | 2016-03-16 | 2016-03-16 | Underground power cable sheath tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105778300A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107043519A (en) * | 2016-11-18 | 2017-08-15 | 安徽伊法拉电气有限公司 | Shrinkage sealing materials in the tube and preparation method thereof |
| CN107240448A (en) * | 2017-07-26 | 2017-10-10 | 国网山东省电力公司临沂供电公司 | A kind of aluminium alloy flexible cable for power equipment |
| CN109776909A (en) * | 2018-12-25 | 2019-05-21 | 安徽辰源电气有限公司 | A kind of flame-proof cable sheath and preparation method thereof |
| WO2019182787A1 (en) | 2018-03-20 | 2019-09-26 | Dow Global Technologies Llc | Polyolefin and polyvinylpyrrolidone formulation |
| US11939455B2 (en) | 2018-06-29 | 2024-03-26 | Dow Global Technologies Llc | Polyolefin formulation with poly(2-alkyl-2-oxazoline) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1969004A (en) * | 2004-05-21 | 2007-05-23 | 尼克桑斯公司 | Fire-resistant cable |
-
2016
- 2016-03-16 CN CN201610151101.8A patent/CN105778300A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1969004A (en) * | 2004-05-21 | 2007-05-23 | 尼克桑斯公司 | Fire-resistant cable |
Non-Patent Citations (3)
| Title |
|---|
| 宋小平 主编: "《石油工业用添加剂生产与应用技术》", 31 March 2014, 中国石化出版社 * |
| 赵敏 主编: "《橡胶毒性与安全实用手册》", 30 September 2004, 化学工业出版社 * |
| 齐贵亮 主编: "《塑料成型物料配制工》", 31 January 2012, 机械工业出版社 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107043519A (en) * | 2016-11-18 | 2017-08-15 | 安徽伊法拉电气有限公司 | Shrinkage sealing materials in the tube and preparation method thereof |
| CN107240448A (en) * | 2017-07-26 | 2017-10-10 | 国网山东省电力公司临沂供电公司 | A kind of aluminium alloy flexible cable for power equipment |
| WO2019182787A1 (en) | 2018-03-20 | 2019-09-26 | Dow Global Technologies Llc | Polyolefin and polyvinylpyrrolidone formulation |
| WO2019178747A1 (en) * | 2018-03-20 | 2019-09-26 | Dow Global Technologies Llc | Polyolefin-and-polyvinylpyrrolidone formulation |
| CN111742008A (en) * | 2018-03-20 | 2020-10-02 | 陶氏环球技术有限责任公司 | Polyolefin and polyvinylpyrrolidone formulations |
| US20200399499A1 (en) * | 2018-03-20 | 2020-12-24 | Dow Global Technologies Llc | Polyolefin and polyvinylpyrrolidone formulation |
| CN111742008B (en) * | 2018-03-20 | 2023-10-27 | 陶氏环球技术有限责任公司 | Polyolefin and polyvinylpyrrolidone formulations |
| US11952503B2 (en) | 2018-03-20 | 2024-04-09 | Dow Global Technologies Llc | Polyolefin and polyvinylpyrrolidone formulation |
| US11939455B2 (en) | 2018-06-29 | 2024-03-26 | Dow Global Technologies Llc | Polyolefin formulation with poly(2-alkyl-2-oxazoline) |
| CN109776909A (en) * | 2018-12-25 | 2019-05-21 | 安徽辰源电气有限公司 | A kind of flame-proof cable sheath and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105778300A (en) | Underground power cable sheath tube | |
| CN102786729B (en) | PE160 grade composite material for pipes and preparation method of composite material | |
| CN103724879B (en) | A kind of electric power protecting pipe and preparation method thereof | |
| CN105367883A (en) | Micro cross-linked low-smoke zero-halogen flame-retardant polyolefin cable material and preparation method thereof | |
| CN102977443B (en) | Carbon fiber rigid cable engineering pipe | |
| CN105001503A (en) | High-extrusion-rate heat-shrinkable tube and production method thereof | |
| CN103408874A (en) | Multi-rubber composite sealing ring | |
| CN111154171A (en) | Aging-resistant and cracking-resistant sheath material for mineral insulated cable and preparation method thereof | |
| CN106751936A (en) | A kind of fire-retardant building electric power protective cover material and preparation method thereof | |
| CN105778451A (en) | Environment-friendly power sheath and preparation method thereof | |
| CN101845174B (en) | Sheath material of solar photovoltaic cable and cable | |
| CN105336390A (en) | Non-poisonous fireproof moistureproof insulating cable | |
| CN105820394A (en) | Wear resisting and high temperature resisting power cable sheath material and preparation method thereof | |
| CN105367859A (en) | High-temperature-resistant and dampproof cable for industry | |
| CN105086349A (en) | High-strength corrosion-resistant thermosetting plastic | |
| CN107365455A (en) | Army material cold resistant cable and preparation method thereof | |
| CN105968506A (en) | Preparation method of wear-proof stable communication cable material | |
| CN115772293B (en) | Preparation process of MPP electric power sheath tube | |
| CN112521675A (en) | Insulating cold-resistant cable material and preparation method and application thereof | |
| CN105101494A (en) | Series-type electric tracing band for large tank long transmission pipeline | |
| CN110643193A (en) | Heat-shrinkable tube with glue and manufacturing method thereof | |
| CN108148236A (en) | Cable sleeve | |
| CN107556606A (en) | A kind of corrosion-resistant protecting pipe and its preparation technology applied to power industry | |
| CN111423701A (en) | Physical property enhanced heat-shrinkable sleeve and preparation method thereof | |
| CN105670193B (en) | Environment protection type high-strength, high flame retardant acrylonitrile ethylene styrene cable |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160720 |
|
| RJ01 | Rejection of invention patent application after publication |