CN113337041A - Power cable protective sleeve with high insulativity - Google Patents
Power cable protective sleeve with high insulativity Download PDFInfo
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- CN113337041A CN113337041A CN202110807872.9A CN202110807872A CN113337041A CN 113337041 A CN113337041 A CN 113337041A CN 202110807872 A CN202110807872 A CN 202110807872A CN 113337041 A CN113337041 A CN 113337041A
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- Prior art keywords
- parts
- power cable
- corrosion
- coupling agent
- cable sheath
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- 230000001681 protective effect Effects 0.000 title claims abstract description 12
- 230000007797 corrosion Effects 0.000 claims abstract description 37
- 238000005260 corrosion Methods 0.000 claims abstract description 37
- 239000007822 coupling agent Substances 0.000 claims abstract description 34
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 28
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 26
- 238000009413 insulation Methods 0.000 claims abstract description 23
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 21
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 21
- 239000000314 lubricant Substances 0.000 claims abstract description 21
- 239000004743 Polypropylene Substances 0.000 claims abstract description 17
- -1 polypropylene Polymers 0.000 claims abstract description 17
- 229920001155 polypropylene Polymers 0.000 claims abstract description 17
- 239000006229 carbon black Substances 0.000 claims abstract description 14
- 229910000019 calcium carbonate Inorganic materials 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
- 239000003365 glass fiber Substances 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 10
- 239000002994 raw material Substances 0.000 claims abstract description 10
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 42
- 238000003756 stirring Methods 0.000 claims description 32
- 229960000583 acetic acid Drugs 0.000 claims description 21
- 239000012362 glacial acetic acid Substances 0.000 claims description 21
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 18
- 238000002156 mixing Methods 0.000 claims description 18
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 15
- 238000006243 chemical reaction Methods 0.000 claims description 15
- NLKNQRATVPKPDG-UHFFFAOYSA-M potassium iodide Chemical compound [K+].[I-] NLKNQRATVPKPDG-UHFFFAOYSA-M 0.000 claims description 15
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 14
- 239000000243 solution Substances 0.000 claims description 13
- RGHHSNMVTDWUBI-UHFFFAOYSA-N 4-hydroxybenzaldehyde Chemical compound OC1=CC=C(C=O)C=C1 RGHHSNMVTDWUBI-UHFFFAOYSA-N 0.000 claims description 12
- 238000010992 reflux Methods 0.000 claims description 11
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 claims description 10
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- 239000011259 mixed solution Substances 0.000 claims description 8
- 239000005662 Paraffin oil Substances 0.000 claims description 7
- 235000021355 Stearic acid Nutrition 0.000 claims description 7
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 7
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 7
- 239000008117 stearic acid Substances 0.000 claims description 7
- VPQQZKWYZYVTMU-UHFFFAOYSA-N 1-bromo-1,1,2,2,3,3,4,4,5,5,6,6,7,7,7-pentadecafluoroheptane Chemical compound FC(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)Br VPQQZKWYZYVTMU-UHFFFAOYSA-N 0.000 claims description 6
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 6
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 6
- CBCKQZAAMUWICA-UHFFFAOYSA-N 1,4-phenylenediamine Chemical compound NC1=CC=C(N)C=C1 CBCKQZAAMUWICA-UHFFFAOYSA-N 0.000 claims description 5
- BRLQWZUYTZBJKN-UHFFFAOYSA-N Epichlorohydrin Chemical compound ClCC1CO1 BRLQWZUYTZBJKN-UHFFFAOYSA-N 0.000 claims description 5
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 5
- 229910000027 potassium carbonate Inorganic materials 0.000 claims description 5
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 4
- 239000005457 ice water Substances 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 238000002390 rotary evaporation Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 3
- 238000001291 vacuum drying Methods 0.000 claims description 3
- 239000000654 additive Substances 0.000 claims 1
- 230000000996 additive effect Effects 0.000 claims 1
- 229910052799 carbon Inorganic materials 0.000 claims 1
- 229920001084 poly(chloroprene) Polymers 0.000 claims 1
- 125000001153 fluoro group Chemical group F* 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 125000003709 fluoroalkyl group Chemical group 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 238000001035 drying Methods 0.000 description 8
- JKIJEFPNVSHHEI-UHFFFAOYSA-N Phenol, 2,4-bis(1,1-dimethylethyl)-, phosphite (3:1) Chemical compound CC(C)(C)C1=CC(C(C)(C)C)=CC=C1OP(OC=1C(=CC(=CC=1)C(C)(C)C)C(C)(C)C)OC1=CC=C(C(C)(C)C)C=C1C(C)(C)C JKIJEFPNVSHHEI-UHFFFAOYSA-N 0.000 description 7
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical group CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- 239000008367 deionised water Substances 0.000 description 6
- 229910021641 deionized water Inorganic materials 0.000 description 6
- 238000001914 filtration Methods 0.000 description 6
- 238000005406 washing Methods 0.000 description 6
- 239000002904 solvent Substances 0.000 description 5
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 3
- 238000007792 addition Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 239000000706 filtrate Substances 0.000 description 3
- 230000007935 neutral effect Effects 0.000 description 3
- 239000002244 precipitate Substances 0.000 description 3
- 239000011541 reaction mixture Substances 0.000 description 3
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- 125000000217 alkyl group Chemical group 0.000 description 2
- 230000000875 corresponding effect Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- LRWZZZWJMFNZIK-UHFFFAOYSA-N 2-chloro-3-methyloxirane Chemical compound CC1OC1Cl LRWZZZWJMFNZIK-UHFFFAOYSA-N 0.000 description 1
- 238000006959 Williamson synthesis reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 125000003700 epoxy group Chemical group 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000002464 physical blending Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 150000003141 primary amines Chemical class 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000007142 ring opening reaction Methods 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 125000000467 secondary amino group Chemical group [H]N([*:1])[*:2] 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
- C08K9/06—Ingredients treated with organic substances with silicon-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/17—Amines; Quaternary ammonium compounds
- C08K5/18—Amines; Quaternary ammonium compounds with aromatically bound amino groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/14—Glass
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
-
- 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
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- 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
-
- 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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- 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)
Abstract
The invention discloses a power cable protective sleeve with high insulativity, belonging to the technical field of protective sleeve production, and comprising the following raw materials in parts by weight: 90-150 parts of polypropylene, 8-17 parts of calcium carbonate, 3-12 parts of glass fiber, 5-12 parts of talcum powder, 1-3 parts of carbon black, 0.5-1.5 parts of coupling agent, 0.3-0.8 part of antioxidant, 0.3-1.2 parts of lubricant and 1.5-3.5 parts of corrosion-resistant auxiliary agent. The corrosion-resistant auxiliary agent is introduced into the polypropylene base material, and the corrosion resistance and the high insulation property of the power cable sheath pipe are further improved through the special molecular structure of the corrosion-resistant auxiliary agent. This is attributed to the fact that the corrosion-resistant auxiliary agent has long fluoroalkyl chains in the molecule, easily gathers on the surface of the sheath tube to form a layer of fluorine chain, and has strong corrosion resistance, mechanical property and insulating property due to the fact that fluorine-fluorine chain bond energy is large.
Description
Technical Field
The invention belongs to the technical field of production of protective sleeves, and particularly relates to a power cable protective sleeve with high insulativity.
Background
The power cable is commonly used for urban underground power grids, power station leading-out lines, power supply inside industrial and mining enterprises and power transmission lines under river-crossing seawater, and is a cable for transmitting and distributing electric energy; with the modern development of urban planning, the cable is almost in a normal state, and usually a non-excavation technology is adopted for construction, so that the method has the advantages of no influence on traffic, small damage to a stratum structure, short construction period and the like. Generally, in terms of safety, service life of the power cable and the like, the outer layer of the power cable is sleeved with the protective sleeve, so that the power cable can be effectively prevented from being corroded by soil, rainwater and the like, and accidents such as electric leakage, electric shock and the like in the process of power cable construction and repair are reduced.
However, the existing power cable sheath pipe is corroded by soil and muddy water at the ground bottom for a long time, and is aged and cracked to cause electric leakage, so that the cable and the insulation cannot be protected.
Disclosure of Invention
The invention aims to provide a power cable protective sleeve with high insulation, which not only has high insulation, but also is corrosion-resistant and durable, so as to solve the problems that the conventional power cable protective sleeve is not corrosion-resistant, has aging chap and loses efficacy.
The purpose of the invention can be realized by the following technical scheme:
a power cable sheath pipe with high insulation comprises the following raw materials in parts by weight: 90-150 parts of polypropylene, 8-17 parts of calcium carbonate, 3-12 parts of glass fiber, 5-12 parts of talcum powder, 1-3 parts of carbon black, 0.5-1.5 parts of coupling agent, 0.3-0.8 part of antioxidant, 0.3-1.2 parts of lubricant and 1.5-3.5 parts of corrosion-resistant auxiliary agent.
Further, the coupling agent is one of a titanate coupling agent or a silane coupling agent.
Further, the antioxidant is an antioxidant 1010, and the antioxidant 168 is mixed according to a mass ratio of 1: 3, mixing and combining.
Further, the lubricant is one of stearic acid and paraffin oil or a mixture of stearic acid and paraffin oil in any ratio.
Further, the corrosion-resistant auxiliary agent is prepared by the following steps:
step A, dissolving 4-hydroxybenzaldehyde in dimethyl sulfoxide, then adding potassium carbonate and potassium iodide, heating to 112 ℃, dropwise adding 1-bromo perfluoroheptane at a dropping speed of 1 drop/second, reacting for 8 hours, cooling, pouring a reaction mixture into a large amount of deionized water, standing at 5 ℃ for 30 minutes to generate a large amount of white precipitate, filtering, repeatedly washing with deionized water for 3 times, drying to constant weight to obtain an intermediate 1, and carrying out Williamson synthesis reaction by using 4-hydroxybenzaldehyde and 1-bromo perfluoroheptane, wherein the dosage ratio of 4-hydroxybenzaldehyde, dimethyl sulfoxide, potassium carbonate, potassium iodide and 1-bromo perfluoroheptane is 0.02 mol: 10-30 mL: 0.02 mol: 0.1-0.2 g: 0.02-0.022mol, and the reaction formula is shown as follows;
and step B, adding the intermediate 1, phenol and glacial acetic acid into a three-neck flask with a condensing reflux pipe and a stirring magneton, dropwise adding a mixed solution of concentrated sulfuric acid and glacial acetic acid by using a constant-pressure dropping funnel at the dropping speed of 1 drop/second under stirring at the temperature of 0-2 ℃, continuously stirring at a constant temperature for reaction for 72 hours after complete dropwise addition, then pouring into frozen ice water, continuously stirring for 1 hour, filtering, washing with water until filtrate is neutral, and drying in vacuum to constant weight to obtain an intermediate 2, wherein the dosage ratio of the mixed solution of the intermediate 1, the phenol, the glacial acetic acid, the concentrated sulfuric acid and the glacial acetic acid is 0.03 mol: 0.06 mol: 15-30 mL: 40-50mL, wherein the volume ratio of concentrated sulfuric acid to glacial acetic acid in the mixed solution of concentrated sulfuric acid and glacial acetic acid is 1-1.5: 4, the mass fraction of the concentrated sulfuric acid is 98 percent; adding the intermediate 2, epichlorohydrin and N, N-dimethylformamide into a three-neck flask, heating to 50 ℃, stirring until the intermediate 2 is completely dissolved, heating to 72 ℃, adding a sodium hydroxide solution under a stirring state, performing reflux reaction for 3-6h to obtain an intermediate 3, and performing Williams' Muson synthesis reaction by using the intermediate 2 and the epichlorohydrin, wherein the dosage ratio of the intermediate 2, the epichlorohydrin, the N, N-dimethylformamide and the sodium hydroxide solution is 0.01 mol: 0.022-0.028 mol: 50-70 mL: 9-14mL, the reaction formula is shown as follows;
and step C, sequentially adding the intermediate 3, p-phenylenediamine and glacial acetic acid into a three-neck flask, uniformly stirring, carrying out light-shielding treatment by using tinfoil, heating a reaction system to 92 ℃ by using an oil bath kettle under the nitrogen protection state, carrying out reflux reaction for 12 hours, then carrying out reduced pressure rotary evaporation to remove a solvent, obtaining the corrosion-resistant auxiliary agent, and carrying out ring-opening reaction on primary amine and epoxy groups, wherein the dosage ratio of the intermediate 3, the p-phenylenediamine and the glacial acetic acid is 0.1 mol: 0.21-0.23 mol: 80-160mL, the reaction formula is shown below.
A preparation method of a power cable sheath pipe with high insulation comprises the following steps:
preparing a coupling agent solution from a coupling agent and acetone, mixing and stirring the coupling agent solution, calcium carbonate, glass fiber, talcum powder and carbon black for 5-15min, transferring to a vacuum drying oven for drying, and removing a solvent to obtain a mixed material I;
and step two, adding the polychloropropene and the corrosion-resistant auxiliary agent into a high-speed mixer, stirring for 20-50min at the temperature of 100-.
Further, in the second step, the rotation speed of the two screws of the twin-screw extruder is both 200-.
The invention has the beneficial effects that:
1. the polypropylene is used as a base material of the power cable sheath pipe, the polypropylene has excellent chemical resistance, heat resistance, electrical insulation, high-strength mechanical property and good high-wear-resistance processing property, three fillers of calcium carbonate, glass fiber and carbon black are added into a polypropylene system, the mechanical property of the polypropylene is further enhanced in a physical blending mode, and the introduction of a coupling agent promotes the dispersion of the fillers in the polypropylene and the blending modification effect, and the introduction of an antioxidant further enhances the oxidation resistance of the sheath pipe;
2. according to the invention, the corrosion-resistant auxiliary agent is introduced into the polypropylene system, and the corrosion resistance and the high insulation property of the power cable sheath pipe are further improved through the special molecular structure of the corrosion-resistant auxiliary agent. The corrosion-resistant auxiliary agent is characterized in that the corrosion-resistant auxiliary agent has a long fluorine-containing alkyl chain in a molecule, the fluorine-containing alkyl chain has a low surface energy characteristic, and easily gathers on the surface of the protective sleeve to form a fluorine chain layer, and the corrosion-resistant auxiliary agent has strong corrosion resistance, mechanical property and insulating property due to a large fluorine-fluorine chain bonding energy, and has a certain anti-aging property due to a secondary amine structure in the molecule.
In conclusion, the power cable protective sleeve provided by the invention has excellent insulating property and corrosion resistance.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The corrosion-resistant auxiliary agent is prepared by the following steps:
step A, dissolving 0.02mol of 4-hydroxybenzaldehyde in 10mL of dimethyl sulfoxide, then adding 0.02mol of potassium carbonate and 0.1g of potassium iodide, heating to 112 ℃, dropwise adding 0.02mol of 1-bromoperfluoroheptane at a dropwise speed of 1 drop/second, reacting for 8 hours, cooling, pouring the reaction mixture into a large amount of deionized water, standing for 30 minutes at 5 ℃ to generate a large amount of white precipitates, filtering, repeatedly washing with deionized water for 3 times, and drying to constant weight to obtain an intermediate 1;
and step B, adding 0.03mol of the intermediate 1, 0.06mol of phenol and 15mL of glacial acetic acid into a three-neck flask with a condensing reflux pipe and a stirring magneton, dropwise adding 40mL of mixed solution of concentrated sulfuric acid and glacial acetic acid into a constant-pressure dropping funnel at 0 ℃ under stirring at a dropping speed of 1 drop/second, continuously stirring and reacting for 72 hours at a constant temperature after complete dropwise addition, then pouring into frozen ice water, continuously stirring for 1 hour, filtering, washing with water until the filtrate is neutral, and drying in vacuum to constant weight to obtain an intermediate 2, wherein the volume ratio of concentrated sulfuric acid to glacial acetic acid in the mixed solution of concentrated sulfuric acid and glacial acetic acid is 1: 4, the mass fraction of the concentrated sulfuric acid is 98 percent; adding 0.01mol of intermediate 2, 0.022mol of epichlorohydrin and 50mL of N, N-dimethylformamide into a three-neck flask, heating to 50 ℃, stirring until the intermediate 2 is completely dissolved, heating to 72 ℃, adding 9mL of sodium hydroxide solution under the stirring state, and carrying out reflux reaction for 3-6h to obtain an intermediate 3;
and step C, sequentially adding 0.1mol of the intermediate 3, 0.21mol of p-phenylenediamine and 80mL of glacial acetic acid into a three-neck flask, uniformly stirring, carrying out light-shielding treatment by using tinfoil, heating the reaction system to 92 ℃ by using an oil bath kettle under the nitrogen protection state, carrying out reflux reaction for 12h, and then carrying out reduced pressure rotary evaporation to remove the solvent to obtain the corrosion-resistant auxiliary agent.
Example 2:
the corrosion-resistant auxiliary agent is prepared by the following steps:
step A, dissolving 0.02mol of 4-hydroxybenzaldehyde in 30mL of dimethyl sulfoxide, then adding 0.02mol of potassium carbonate and 0.1-0.2g of potassium iodide, heating to 112 ℃, dropwise adding 0.022mol of 1-bromoperfluoroheptane at the speed of 1 drop/second, reacting for 8 hours, cooling, pouring the reaction mixture into a large amount of deionized water, standing for 30min at the temperature of 5 ℃, generating a large amount of white precipitates, filtering, repeatedly washing with the deionized water for 3 times, and drying to constant weight to obtain an intermediate 1;
and step B, adding 0.03mol of the intermediate 1, 0.06mol of phenol and 30mL of glacial acetic acid into a three-neck flask with a condensing reflux pipe and a stirring magneton, dropwise adding 50mL of mixed solution of concentrated sulfuric acid and glacial acetic acid into a constant-pressure dropping funnel at the stirring temperature of 2 ℃, wherein the dropwise adding speed is 1 drop/second, after the dropwise adding is completed, continuously stirring and reacting for 72 hours at a constant temperature, then pouring into frozen ice water, continuously stirring for 1 hour, filtering, washing with water until the filtrate is neutral, and drying in vacuum to constant weight to obtain an intermediate 2, wherein the volume ratio of concentrated sulfuric acid to glacial acetic acid in the mixed solution of concentrated sulfuric acid and glacial acetic acid is 1.5: 4, the mass fraction of the concentrated sulfuric acid is 98 percent; adding 0.01mol of intermediate 2, 0.028mol of epoxy chloropropane and 70mL of N, N-dimethylformamide into a three-neck flask, heating to 50 ℃, stirring until the intermediate 2 is completely dissolved, heating to 72 ℃, adding 14mL of sodium hydroxide solution under the stirring state, and carrying out reflux reaction for 6h to obtain an intermediate 3;
and step C, sequentially adding 0.1mol of the intermediate 3, 0.23mol of p-phenylenediamine and 160mL of glacial acetic acid into a three-neck flask, uniformly stirring, carrying out light-shielding treatment by using tinfoil, heating the reaction system to 92 ℃ by using an oil bath kettle under the nitrogen protection state, carrying out reflux reaction for 12h, and then carrying out reduced pressure rotary evaporation to remove the solvent to obtain the corrosion-resistant auxiliary agent.
Example 3:
a power cable sheath pipe with high insulation comprises the following raw materials in parts by weight: 90 parts of polypropylene, 8 parts of calcium carbonate, 3 parts of glass fiber, 5 parts of talcum powder, 1 part of carbon black, 0.5 part of coupling agent, 0.3 part of antioxidant, 0.3 part of lubricant and 1.5 parts of corrosion-resistant auxiliary agent prepared in example 1, wherein the coupling agent is titanate coupling agent; the antioxidant is an antioxidant 1010, and the antioxidant 168 is mixed according to the mass ratio of 1: 3 and the lubricant is stearic acid.
The power cable sheath pipe with high insulativity is prepared by the following steps:
step one, preparing a coupling agent solution from a coupling agent and acetone, mixing and stirring the coupling agent solution, calcium carbonate, glass fiber, talcum powder and carbon black for 10min, transferring to a vacuum drying oven for drying, and removing a solvent to obtain a mixed material I;
and step two, adding the polychloropropene and the corrosion-resistant auxiliary agent into a high-speed mixer, stirring for 30min at 300r/min at 100 ℃, adding an antioxidant and a lubricant, blending for 15min at 105 ℃ and 700r/min, then adding the mixed material I obtained in the step one, stirring for 20min at constant temperature until 115 ℃, then adding the mixed material I into a double-screw extruder, blending, extruding and granulating, and then sending the mixture into an extrusion forming machine for forming, sizing, drawing and cutting to obtain the high-insulation power cable sheath pipe, wherein the rotating speeds of two screws of the double-screw extruder are both 200rpm, the feed inlet and the extrusion outlet are divided into four parts, and the temperature ranges are 152 ℃, 160 ℃, 178 ℃ and 195 ℃ in sequence.
Example 4:
a power cable sheath pipe with high insulation comprises the following raw materials in parts by weight: 110 parts of polypropylene, 11 parts of calcium carbonate, 8 parts of glass fiber, 8 parts of talcum powder, 2 parts of carbon black, 1 part of coupling agent, 0.5 part of antioxidant, 1 part of lubricant and 2 parts of corrosion-resistant auxiliary agent prepared in example 2, wherein the coupling agent is silane coupling agent KH 560; the antioxidant is an antioxidant 1010, and the antioxidant 168 is mixed according to the mass ratio of 1: 3 and the lubricant is paraffin oil.
The power cable sheath pipe with high insulativity is prepared by the following steps: refer to the steps in example 3.
Example 5:
a power cable sheath pipe with high insulation comprises the following raw materials in parts by weight: 150 parts of polypropylene, 17 parts of calcium carbonate, 12 parts of glass fiber, 12 parts of talcum powder, 3 parts of carbon black, 1.5 parts of coupling agent, 0.8 part of antioxidant, 1.2 parts of lubricant and 3.5 parts of corrosion-resistant auxiliary agent prepared in example 1, wherein the coupling agent is titanate coupling agent; the antioxidant is an antioxidant 1010, and the antioxidant 168 is mixed according to the mass ratio of 1: 3, and the lubricant is stearic acid and paraffin oil which are mixed according to a mass ratio of 1: 2, a combination of mixing.
The power cable sheath pipe with high insulativity is prepared by the following steps: refer to the steps in example 3.
Comparative example 1:
a power cable sheath pipe with high insulation comprises the following raw materials in parts by weight: 90 parts of polypropylene, 8 parts of calcium carbonate, 5 parts of talcum powder, 1 part of carbon black, 0.5 part of coupling agent, 0.3 part of antioxidant, 0.3 part of lubricant and 1.5 parts of corrosion-resistant auxiliary agent prepared in example 1, wherein the coupling agent is titanate coupling agent; the antioxidant is an antioxidant 1010, and the antioxidant 168 is mixed according to the mass ratio of 1: 3 and the lubricant is stearic acid.
The power cable sheath pipe with high insulativity is prepared by the following steps: refer to the steps in example 3.
Comparative example 2:
a power cable sheath pipe with high insulation comprises the following raw materials in parts by weight: 110 parts of polypropylene, 11 parts of calcium carbonate, 8 parts of glass fiber, 8 parts of talcum powder, 2 parts of carbon black, 1 part of coupling agent, 0.5 part of antioxidant and 1 part of lubricant, wherein the coupling agent is silane coupling agent KH 560; the antioxidant is an antioxidant 1010, and the antioxidant 168 is mixed according to the mass ratio of 1: 3 and the lubricant is paraffin oil.
The power cable sheath pipe with high insulativity is prepared by the following steps: refer to the steps in example 3.
Comparative example 3:
a power cable sheath pipe with high insulation comprises the following raw materials in parts by weight: 150 parts of polypropylene, 12 parts of glass fiber, 12 parts of talcum powder, 3 parts of carbon black, 1.5 parts of coupling agent, 0.8 part of antioxidant, 1.2 parts of lubricant and 3.5 parts of corrosion-resistant auxiliary agent prepared in example 1, wherein the coupling agent is titanate coupling agent; the antioxidant is an antioxidant 1010, and the antioxidant 168 is mixed according to the mass ratio of 1: 3, and the lubricant is stearic acid and paraffin oil which are mixed according to a mass ratio of 1: 2, a combination of mixing.
The power cable sheath pipe with high insulativity is prepared by the following steps: refer to the steps in example 3.
Example 6:
the high-insulation power cable sheath obtained in examples 3 to 5 and comparative examples 1 to 3 were subjected to the following performance tests:
the flexural modulus was tested according to GB/T2951-2008;
the dielectric constant at 23 +/-2 ℃ is tested according to GB/T3048-2007;
corrosion resistance: cutting a sample to be tested into small blocks of 1.5cm multiplied by 1.5cm, respectively immersing the small blocks into 10% dilute HCl and 10% dilute NaOH solutions for 20 days, and observing the change condition of the shapes of the small blocks.
The test results are shown in table 1.
TABLE 1
As can be seen from the data in table 1, the electric insulation and acid and alkali resistance of the power cable sheath pipes obtained in examples 3 to 5 are superior to the corresponding properties of the power cable sheath pipe obtained in comparative example 2, and the flexural modulus of elasticity of examples 3 to 5 is superior to the corresponding properties of the power cable sheath pipes obtained in comparative examples 1 to 3.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is illustrative and explanatory only and is not intended to be exhaustive or to limit the invention to the precise embodiments described, and various modifications, additions, and substitutions may be made by those skilled in the art without departing from the scope of the invention or exceeding the scope of the claims.
Claims (8)
1. The utility model provides a power cable protective sleeve with high insulating nature which characterized in that includes following raw materials: polypropylene, calcium carbonate, glass fiber, talcum powder, carbon black, a coupling agent, an antioxidant, a lubricant and a corrosion-resistant auxiliary agent;
the corrosion-resistant auxiliary agent is prepared by the following steps:
step A, mixing 4-hydroxybenzaldehyde and dimethyl sulfoxide, adding potassium carbonate and potassium iodide, dropwise adding 1-bromoperfluoroheptane at 112 ℃, reacting for 8 hours, and performing aftertreatment to obtain an intermediate 1;
step B, mixing the intermediate 1, phenol and glacial acetic acid, dropwise adding a mixed solution of concentrated sulfuric acid and glacial acetic acid under stirring at 0-2 ℃, reacting for 72 hours, then pouring into frozen ice water, continuously stirring for 1 hour, and carrying out aftertreatment to obtain an intermediate 2; mixing the intermediate 2, epichlorohydrin and N, N-dimethylformamide, adding a sodium hydroxide solution at 72 ℃ under stirring, and carrying out reflux reaction for 3-6h to obtain an intermediate 3;
and step C, mixing the intermediate 3, p-phenylenediamine and glacial acetic acid, performing reflux reaction for 12 hours at the temperature of 92 ℃ in the dark and under nitrogen, and performing reduced pressure rotary evaporation to obtain the corrosion-resistant auxiliary agent.
2. The power cable sheath tube with high insulation property as claimed in claim 1, wherein the power cable sheath tube comprises the following raw materials in parts by weight: 90-150 parts of polypropylene, 8-17 parts of calcium carbonate, 3-12 parts of glass fiber, 5-12 parts of talcum powder, 1-3 parts of carbon black, 0.5-1.5 parts of coupling agent, 0.3-0.8 part of antioxidant, 0.3-1.2 parts of lubricant and 1.5-3.5 parts of corrosion-resistant auxiliary agent.
3. The power cable sheath tube with high insulation according to claim 1, wherein the coupling agent is one of titanate coupling agent or silane coupling agent.
4. The power cable sheath tube with high insulation according to claim 1, wherein the lubricant is one of stearic acid, paraffin oil or a mixture thereof.
5. A power cable sheath with high insulation according to claim 1, which is manufactured by the following steps:
step one, preparing a coupling agent solution from a coupling agent and acetone, mixing and stirring the coupling agent solution, calcium carbonate, glass fiber, talcum powder and carbon black for 5-15min, and performing vacuum drying to obtain a mixed material I;
and step two, uniformly mixing the polychloropropene and the corrosion-resistant auxiliary agent, adding the antioxidant and the lubricant, uniformly mixing, adding the mixed material I, stirring for 20-25min at the temperature of 110-.
6. The power cable sheath tube with high insulation according to claim 5, wherein in the second step, the mixing conditions of the polychloroprene and the corrosion-resistant additive are as follows: stirring for 20-50min at the temperature of 100 ℃ and 110 ℃ and at the speed of 300r/min and 400 r/min.
7. The power cable sheath tube with high insulation according to claim 5, wherein in the second step, the mixing condition of the antioxidant and the lubricant is added: blending for 10-15min at the temperature of 100-110 ℃ and the temperature of 600-900 r/min.
8. The power cable sheath with high insulation property as claimed in claim 5, wherein in the second step, the two screw rotation speeds of the twin-screw extruder are both 200-300rpm, the temperature ranges from 152-157 ℃, 160-165 ℃, 178-190 ℃ and 195-203 ℃ are divided into four parts.
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