CN112898700A - Heat-resistant environment-friendly cable insulation material and preparation method thereof - Google Patents
Heat-resistant environment-friendly cable insulation material and preparation method thereof Download PDFInfo
- Publication number
- CN112898700A CN112898700A CN202110104080.5A CN202110104080A CN112898700A CN 112898700 A CN112898700 A CN 112898700A CN 202110104080 A CN202110104080 A CN 202110104080A CN 112898700 A CN112898700 A CN 112898700A
- Authority
- CN
- China
- Prior art keywords
- polyvinyl chloride
- heat
- filler powder
- cable insulation
- calcium
- 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
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 239000012774 insulation material Substances 0.000 title claims description 29
- 239000004800 polyvinyl chloride Substances 0.000 claims abstract description 81
- 229920000915 polyvinyl chloride Polymers 0.000 claims abstract description 80
- 239000000945 filler Substances 0.000 claims abstract description 49
- 239000000843 powder Substances 0.000 claims abstract description 49
- 238000010438 heat treatment Methods 0.000 claims abstract description 33
- 239000000463 material Substances 0.000 claims abstract description 31
- IHBCFWWEZXPPLG-UHFFFAOYSA-N [Ca].[Zn] Chemical compound [Ca].[Zn] IHBCFWWEZXPPLG-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000006084 composite stabilizer Substances 0.000 claims abstract description 29
- 238000004898 kneading Methods 0.000 claims abstract description 29
- 239000011810 insulating material Substances 0.000 claims abstract description 21
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 20
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 20
- 239000000203 mixture Substances 0.000 claims abstract description 20
- 235000014113 dietary fatty acids Nutrition 0.000 claims abstract description 19
- 238000001125 extrusion Methods 0.000 claims abstract description 19
- 239000000194 fatty acid Substances 0.000 claims abstract description 19
- 229930195729 fatty acid Natural products 0.000 claims abstract description 19
- 238000003756 stirring Methods 0.000 claims abstract description 18
- 238000005469 granulation Methods 0.000 claims abstract description 17
- 230000003179 granulation Effects 0.000 claims abstract description 17
- 150000004665 fatty acids Chemical class 0.000 claims abstract description 15
- 239000003086 colorant Substances 0.000 claims abstract description 14
- 239000004014 plasticizer Substances 0.000 claims abstract description 11
- 239000002994 raw material Substances 0.000 claims abstract description 9
- 230000032683 aging Effects 0.000 claims abstract description 7
- 238000002156 mixing Methods 0.000 claims description 43
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 30
- KUDUQBURMYMBIJ-UHFFFAOYSA-N 2-prop-2-enoyloxyethyl prop-2-enoate Chemical compound C=CC(=O)OCCOC(=O)C=C KUDUQBURMYMBIJ-UHFFFAOYSA-N 0.000 claims description 24
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 claims description 22
- 239000008116 calcium stearate Substances 0.000 claims description 22
- 235000013539 calcium stearate Nutrition 0.000 claims description 22
- HVLLSGMXQDNUAL-UHFFFAOYSA-N triphenyl phosphite Chemical compound C=1C=CC=CC=1OP(OC=1C=CC=CC=1)OC1=CC=CC=C1 HVLLSGMXQDNUAL-UHFFFAOYSA-N 0.000 claims description 22
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 claims description 22
- GDVKFRBCXAPAQJ-UHFFFAOYSA-A dialuminum;hexamagnesium;carbonate;hexadecahydroxide Chemical compound [OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Al+3].[Al+3].[O-]C([O-])=O GDVKFRBCXAPAQJ-UHFFFAOYSA-A 0.000 claims description 19
- 229960001545 hydrotalcite Drugs 0.000 claims description 19
- 229910001701 hydrotalcite Inorganic materials 0.000 claims description 19
- 239000011347 resin Substances 0.000 claims description 19
- 229920005989 resin Polymers 0.000 claims description 19
- 239000003381 stabilizer Substances 0.000 claims description 19
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 claims description 18
- 238000009413 insulation Methods 0.000 claims description 17
- 238000000227 grinding Methods 0.000 claims description 15
- -1 fatty acid ester Chemical class 0.000 claims description 14
- 238000004132 cross linking Methods 0.000 claims description 13
- 238000001035 drying Methods 0.000 claims description 13
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 claims description 12
- UUEWCQRISZBELL-UHFFFAOYSA-N 3-trimethoxysilylpropane-1-thiol Chemical compound CO[Si](OC)(OC)CCCS UUEWCQRISZBELL-UHFFFAOYSA-N 0.000 claims description 12
- 230000003301 hydrolyzing effect Effects 0.000 claims description 12
- 239000002245 particle Substances 0.000 claims description 12
- 238000006116 polymerization reaction Methods 0.000 claims description 12
- KUAZQDVKQLNFPE-UHFFFAOYSA-N thiram Chemical compound CN(C)C(=S)SSC(=S)N(C)C KUAZQDVKQLNFPE-UHFFFAOYSA-N 0.000 claims description 12
- 235000021355 Stearic acid Nutrition 0.000 claims description 11
- 238000001816 cooling Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 11
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 11
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 11
- 238000012545 processing Methods 0.000 claims description 11
- 239000003549 soybean oil Substances 0.000 claims description 11
- 235000012424 soybean oil Nutrition 0.000 claims description 11
- 239000008117 stearic acid Substances 0.000 claims description 11
- MQIUGAXCHLFZKX-UHFFFAOYSA-N Di-n-octyl phthalate Natural products CCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCC MQIUGAXCHLFZKX-UHFFFAOYSA-N 0.000 claims description 10
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 10
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 claims description 10
- 238000002485 combustion reaction Methods 0.000 claims description 10
- 238000001914 filtration Methods 0.000 claims description 10
- 239000012768 molten material Substances 0.000 claims description 10
- 239000002243 precursor Substances 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 7
- 229910000077 silane Inorganic materials 0.000 claims description 7
- SJECZPVISLOESU-UHFFFAOYSA-N 3-trimethoxysilylpropan-1-amine Chemical compound CO[Si](OC)(OC)CCCN SJECZPVISLOESU-UHFFFAOYSA-N 0.000 claims description 6
- 239000002202 Polyethylene glycol Substances 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 229910001377 aluminum hypophosphite Inorganic materials 0.000 claims description 6
- 239000006229 carbon black Substances 0.000 claims description 6
- 239000004359 castor oil Substances 0.000 claims description 6
- 235000019438 castor oil Nutrition 0.000 claims description 6
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 0.000 claims description 6
- 239000000155 melt Substances 0.000 claims description 6
- 229910021392 nanocarbon Inorganic materials 0.000 claims description 6
- 229920001223 polyethylene glycol Polymers 0.000 claims description 6
- 239000012530 fluid Substances 0.000 claims description 5
- 230000007935 neutral effect Effects 0.000 claims description 5
- 238000005507 spraying Methods 0.000 claims description 5
- 238000001132 ultrasonic dispersion Methods 0.000 claims description 5
- 229910019142 PO4 Inorganic materials 0.000 claims description 4
- OEIWPNWSDYFMIL-UHFFFAOYSA-N dioctyl benzene-1,4-dicarboxylate Chemical compound CCCCCCCCOC(=O)C1=CC=C(C(=O)OCCCCCCCC)C=C1 OEIWPNWSDYFMIL-UHFFFAOYSA-N 0.000 claims description 4
- 239000010452 phosphate Substances 0.000 claims description 4
- 239000012188 paraffin wax Substances 0.000 claims description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 3
- 230000007613 environmental effect Effects 0.000 claims description 2
- 229910001385 heavy metal Inorganic materials 0.000 abstract description 5
- 239000000126 substance Substances 0.000 abstract description 4
- 230000036541 health Effects 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 9
- 229920001971 elastomer Polymers 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 229920000181 Ethylene propylene rubber Polymers 0.000 description 3
- 239000004020 conductor Substances 0.000 description 3
- 229920003020 cross-linked polyethylene Polymers 0.000 description 3
- 239000004703 cross-linked polyethylene Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000008187 granular material Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000004806 packaging method and process Methods 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 238000012216 screening Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 238000004073 vulcanization Methods 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 239000004605 External Lubricant Substances 0.000 description 1
- 239000004610 Internal Lubricant Substances 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229920005549 butyl rubber Polymers 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N diphenyl Chemical group C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 description 1
- USIUVYZYUHIAEV-UHFFFAOYSA-N diphenyl ether Chemical class C=1C=CC=CC=1OC1=CC=CC=C1 USIUVYZYUHIAEV-UHFFFAOYSA-N 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 235000019198 oils Nutrition 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08L27/06—Homopolymers or copolymers of vinyl chloride
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/24—Crosslinking, e.g. vulcanising, of macromolecules
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
- H01B3/443—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from vinylhalogenides or other halogenoethylenic compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2327/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
- C08J2327/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
- C08J2327/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08J2327/06—Homopolymers or copolymers of vinyl chloride
-
- 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
- C08L2203/202—Applications use in electrical or conductive gadgets use in electrical wires or wirecoating
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Organic Insulating Materials (AREA)
Abstract
The invention discloses a heat-resistant environment-friendly cable insulating material and a preparation method thereof, wherein the heat-resistant environment-friendly cable insulating material comprises the following raw materials: modified cross-linked polyvinyl chloride, a plasticizer, a calcium-zinc composite stabilizer, an antioxidant, fatty acid amide, modified filler powder and a colorant; prepared by the following steps: adding modified cross-linked polyvinyl chloride, a calcium-zinc composite stabilizer, an antioxidant and fatty acid amide into a heating mixer, stirring uniformly, adding the mixture and modified filler powder into a plasticator for plastication, kneading the mixture and a colorant after plastication, and finally adding the mixture into a double-screw extruder for extrusion granulation to obtain the heat-resistant environment-friendly cable insulating material. The technical problem that the ecological environment and the human health are influenced because the cable insulating material taking polyvinyl chloride as a base material contains harmful substances such as heavy metals is solved, various mechanical properties and electrical properties of the cable insulating material are improved, the heat resistance and ageing resistance of the cable insulating material for a cable insulating layer are improved, and the cable insulating material is suitable for more use occasions.
Description
Technical Field
The invention belongs to the technical field of cable insulation materials, and particularly relates to a heat-resistant environment-friendly cable insulation material and a preparation method thereof.
Background
The cable insulation layer is the same as the protective layer, the shielding layer, the sheath layer and the conductor core, and is a necessary basic component for forming the electric wire and cable. The cable insulation layer ensures that current or electromagnetic waves and light waves transmitted by the conductor wire core only flow along the advancing direction of the conductor wire without flowing outwards, and also ensures the safety of external objects and personnel.
Common plastics are polyvinyl chloride (PVC), polyethylene, cross-linked polyethylene (XLPE). Among them, PVC is widely used in low voltage cables due to its advantages of convenient process, good comprehensive mechanical and electrical properties, good flame retardant properties, low cost, etc. Polyethylene is widely used in cable insulation and outdoor cable sheaths due to its excellent electrical properties, moisture resistance, cold resistance and moderate mechanical properties, while crosslinked polyethylene is widely used in insulation of medium and high voltage cables due to its excellent electrical and mechanical properties. Because of its excellent electrical properties, good high temperature and oil resistance, polypropylene is commonly used as the insulation layer of communication cables and oil well cables, and is also the first choice insulation material for telephone and computer flexible ropes. The plastic cable insulating material has the advantages of simple structure, convenient manufacture and processing, light weight, convenient laying and installation and the like, is widely used for medium and low voltage cables, and has the tendency of replacing viscous impregnated oilpaper cables.
The rubber insulating material is prepared by fully mixing rubber and various compounding agents, extruding the mixture on a conductive wire core, and heating and vulcanizing the mixture to form an insulating layer. The rubber insulating layer is soft and elastic, is suitable for frequent movement and has small bending radius. Common insulating rubber materials are natural rubber-styrene rubber mixture, ethylene propylene rubber, butyl rubber and the like. The long-term allowable working temperature of the ethylene propylene rubber material is 90 ℃, the allowable temperature of the short-circuit thermal stability is 250 ℃, the ethylene propylene rubber material is suitable for a larger temperature range, and has stronger environmental adaptability, weather resistance, light resistance, oxygen resistance, ozone resistance and moisture resistance.
The common PVC cable insulating material contains a certain amount of harmful substances such as heavy metal elements and the like, and becomes an important factor for restricting the application of electric wires and cables in occasions such as electrical equipment, infrastructure and the like. In order to protect human health and ecological environment, the development of environment-friendly PVC cable materials has been the subject of current cable material development.
Disclosure of Invention
The invention aims to provide a heat-resistant environment-friendly cable insulating material and a preparation method thereof, wherein polyvinyl chloride resin with high polymerization degree is selected as a raw material, the grafting reaction of gamma-mercaptopropyl trimethoxy silane and a polyvinyl chloride molecular chain is completed under the action of a vulcanization system formed by dicumyl peroxide and TMTD in the extrusion process and the assistance of ethylene glycol diacrylate, and then modified crosslinked polyvinyl chloride with more stable mechanical property and electrical property is obtained after hydrolytic crosslinking in hot water, so that the foundation is laid for subsequent physical mixing modification; the calcium-zinc composite stabilizer without heavy metals is prepared and is added into the modified cross-linked polyvinyl chloride in a dispersing manner, so that the thermal stability of the cable is greatly improved, the technical problem that the ecological environment and the human health are influenced because the cable insulation material taking the polyvinyl chloride as a base material contains harmful substances such as heavy metals is solved, various mechanical properties and electrical properties of the cable insulation material are improved, the heat resistance and ageing resistance of the cable insulation material for the cable insulation layer are improved, and the cable insulation material is suitable for more use occasions.
The purpose of the invention can be realized by the following technical scheme:
a heat-resistant environment-friendly cable insulation material comprises the following raw materials in parts by weight: 100 parts of modified cross-linked polyvinyl chloride, 10-40 parts of plasticizer, 5-10 parts of calcium-zinc composite stabilizer, 0.1-1 part of antioxidant, 1-3 parts of fatty acid amide, 10-30 parts of modified filler powder and 0-10 parts of colorant;
the preparation method of the heat-resistant environment-friendly cable insulating material comprises the following steps:
step S1: preheating a heating mixer to 50 ℃, adding modified crosslinked polyvinyl chloride, a calcium-zinc composite stabilizer, an antioxidant and fatty acid amide in parts by weight into the heating mixer, controlling the temperature in the heating mixer to be 70-75 ℃, stirring and mixing for 30min, uniformly mixing, and then putting into a single-screw extruder for extrusion and granulation, wherein the processing temperature of a single screw is 130-150 ℃;
step S2: adding the material prepared in the step S1 and the modified filler powder in the formula weight part into a plasticator for plastication, setting the front roller temperature at 120-;
step S3: and (4) putting the cable insulation precursor material prepared in the step S2 and a colorant in the formula weight part into a kneading machine, kneading at the rotation speed of 600-.
Further, the modified cross-linked polyvinyl chloride is prepared by the following steps:
step A1: respectively adding gamma-mercaptopropyltrimethoxysilane, ethylene glycol diacrylate, dicumyl peroxide and TMTD into a mixer, stirring at the rotation speed of 200-400r/min, and uniformly mixing to obtain a mixture for later use;
step A2: adding the mixture, polyvinyl chloride and dioctyl phthalate into a double-screw extruder, and carrying out extrusion granulation to obtain polyvinyl chloride grafted particles;
step A3: and (3) placing the polyvinyl chloride grafted particles in water at the temperature of 80-90 ℃ for hydrolytic crosslinking, filtering and drying after 5 hours of hydrolytic crosslinking to obtain the modified crosslinked polyvinyl chloride.
The reaction principle of the preparation process is as follows:
the grafting reaction process is as follows:
and (3) hydrolysis crosslinking process:
further, the mass ratio of the gamma-mercaptopropyltrimethoxysilane, the ethylene glycol diacrylate, the dicumyl peroxide and the TMTD in the step A1 is 2-3:1.3-1.5:1: 2; the mass ratio of the mixed material, the polyvinyl chloride and the dioctyl phthalate in the step A2 is 0.08:2: 1.
Further, the polyvinyl chloride is a high-polymerization degree polyvinyl chloride resin, and the high-polymerization degree polyvinyl chloride resin is any one of XS-2 type polyvinyl chloride resin and SG-3 type polyvinyl chloride resin.
Further, the plasticizer is one or more of dioctyl terephthalate, phosphate, chlorinated paraffin and fatty acid ester which are mixed in any proportion.
Further, the calcium-zinc composite stabilizer is prepared by the following method:
step B1: adding calcium stearate and zinc stearate into a kneading pot according to the mass ratio of 1:3, heating the kneading pot to 130-150 ℃, heating at the rotating speed of 60-80r/min while stirring, and preparing a molten material of calcium stearate and zinc stearate; uniformly spraying silane on the surface of hydrotalcite, and adding the hydrotalcite into a melt of calcium stearate and zinc stearate to prepare a main stabilizer; the mass ratio of the hydrotalcite to the molten materials of the calcium stearate and the zinc stearate is 1: 2;
step B2: and adding triphenyl phosphite, stearic acid and epoxidized soybean oil into the main stabilizer for mixing and dissolving, wherein the mass ratio of the main stabilizer to the triphenyl phosphite to the stearic acid to the epoxidized soybean oil is 4.5:3:1:3, cooling and slicing, and extruding and granulating by an extruder to obtain the calcium-zinc composite stabilizer.
Furthermore, the antioxidant is formed by mixing bisphenol A and bisphenol A phosphite ester in any proportion.
Further, the modified filler powder is prepared by the following steps:
step C1, uniformly mixing the calcined argil and the white carbon black in a weight ratio of 2:1, carrying out flash combustion in a flash combustion kiln at the temperature of 800-850 ℃, taking out and cooling, adding a sodium hydroxide solution with the mass fraction of 4% for grinding for 1-2h, then adding a hydrochloric acid solution with the mass fraction of 12-15%, adjusting the pH value to 4-5, aging for 10-15h, then adding a sodium hydroxide solution with the mass fraction of 4% for adjusting the pH value of the grinding fluid to be neutral, filtering, and drying the filter residue to obtain filler powder;
and step C2, adding castor oil, nanocarbon and aluminum hypophosphite into the filler powder, wherein the weight of the castor oil, the nanocarbon and the aluminum hypophosphite is 2-3% of the weight of the filler powder, grinding the mixture for 1-2h, adding 3-aminopropyl trimethoxysilane and polyethylene glycol 4-5% of the weight of the filler powder, wherein the 3-aminopropyl trimethoxysilane and the polyethylene glycol are 1-3% of the weight of the filler powder, placing the mixture in an ultrasonic disperser, and performing ultrasonic dispersion for 10-20min under the condition that the ultrasonic frequency is controlled to be 55-75kHz to obtain the modified filler powder.
A preparation method of a heat-resistant environment-friendly cable insulating material specifically comprises the following steps:
step S1: preheating a heating mixer to 50 ℃, adding modified crosslinked polyvinyl chloride, a calcium-zinc composite stabilizer, an antioxidant and fatty acid amide in parts by weight into the heating mixer, controlling the temperature in the heating mixer to be 70-75 ℃, stirring and mixing for 30min, uniformly mixing, and then putting into a single-screw extruder for extrusion and granulation, wherein the processing temperature of a single screw is 130-150 ℃;
step S2: adding the material prepared in the step S1 and the modified filler powder in the formula weight part into a plasticator for plastication, setting the front roller temperature at 120-;
step S3: and (4) putting the cable insulation precursor material prepared in the step S2 and a colorant in the formula weight part into a kneading machine, kneading at the rotation speed of 600-.
The invention has the beneficial effects that:
according to the invention, polyvinyl chloride resin with high polymerization degree is selected as a raw material, in the extrusion process, under the action of a vulcanization system formed by dicumyl peroxide and TMTD, the grafting reaction of gamma-mercaptopropyl trimethoxy silane and a polyvinyl chloride molecular chain is completed under the assistance of ethylene glycol diacrylate, and then the modified crosslinked polyvinyl chloride with more stable mechanical property and electrical property is obtained after hydrolytic crosslinking in hot water, so that a foundation is laid for subsequent physical mixing modification;
the calcium stearate and the zinc stearate are melted and blended in the kneading pot, so that the lubricant and the auxiliary stabilizer can be completely melted and mixed in the molten state, the true complete and uniform mixing and dissolving are realized, and the synergistic effect of the calcium-zinc composite stabilizer is exerted to the maximum extent; the hydrotalcite particles are small and easy to agglomerate, and the thermal stability effect is seriously influenced, so that after calcium stearate and zinc stearate are melted, hydrotalcite with silane surface modified is added into the hydrotalcite to be uniformly distributed in the melt, the agglomeration problem is solved through lubrication of silane, a main stabilizer is prepared, triphenyl phosphite, stearic acid and epoxidized soybean oil are added into the main stabilizer to be respectively used as an auxiliary stabilizer, an external lubricant and an internal lubricant, and after the hydrotalcite particles are mixed and dissolved, the calcium-zinc composite stabilizer is obtained through extrusion granulation, so that the stabilization time of the cable insulating material under the high-temperature condition is greatly prolonged, and the long-term thermal stability is at a higher level; the calcium-zinc composite stabilizer does not contain any heavy metal, polybrominated biphenyl, polybrominated diphenyl ether and other harmful substances, so that the environment-friendly effect of the cable insulation material is ensured;
the invention also prepares modified filler powder by modifying calcined argil and white carbon black, and when preparing the cable insulation material, the modified cross-linked polyvinyl chloride, the calcium-zinc composite stabilizer, the antioxidant and the fatty acid amide are heated, mixed, extruded and granulated, and then the modified filler powder is added into the mixture for plastication and mixing, so that the dispersion uniformity of raw materials of all components in the cable insulation material is ensured, and the effect of stable performance is achieved.
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
A heat-resistant environment-friendly cable insulation material comprises the following raw materials in parts by weight: 100 parts of modified cross-linked polyvinyl chloride, 10 parts of plasticizer, 5 parts of calcium-zinc composite stabilizer, 0.1 part of antioxidant, 1 part of fatty acid amide, 10 parts of modified filler powder and 6 parts of colorant;
the preparation method of the heat-resistant environment-friendly cable insulating material comprises the following steps:
step S1: preheating a heating mixer to 50 ℃, adding modified crosslinked polyvinyl chloride, a calcium-zinc composite stabilizer, an antioxidant and fatty acid amide in parts by weight of the formula into the heating mixer, controlling the temperature in the heating mixer to be 70 ℃, stirring and mixing for 30min, uniformly mixing, and then putting into a single-screw extruder for extrusion granulation, wherein the processing temperature of a single screw is 130 ℃;
step S2: adding the material prepared in the step S1 and the modified filler powder in the formula weight part into a plasticator for plastication, setting the front roller temperature to be 120 ℃, the rear roller temperature to be 130 ℃, wrapping the rollers for 8min, and then discharging to obtain a cable insulation precursor material;
step S3: and (4) putting the cable insulation precursor material prepared in the step (S2) and a colorant in parts by weight according to the formula into a kneading machine, kneading at the controlled rotating speed of 600r/min, uniformly kneading, putting into a double-screw extruder for extrusion granulation, controlling the processing temperature of the double-screw extruder to be 180 ℃, and drying, screening and packaging the granules to obtain the heat-resistant environment-friendly cable insulation material.
The modified cross-linked polyvinyl chloride is prepared by the following steps:
step A1: respectively adding gamma-mercaptopropyltrimethoxysilane, ethylene glycol diacrylate, dicumyl peroxide and TMTD into a mixer, stirring at the rotating speed of 200r/min, and uniformly mixing to obtain a mixture for later use;
step A2: adding the mixture, polyvinyl chloride and dioctyl phthalate into a double-screw extruder, and carrying out extrusion granulation to obtain polyvinyl chloride grafted particles;
step A3: and (3) placing the polyvinyl chloride grafted particles in water at the temperature of 80 ℃ for hydrolytic crosslinking, filtering and drying after 5 hours of hydrolytic crosslinking to obtain the modified crosslinked polyvinyl chloride.
The mass ratio of the gamma-mercaptopropyl-trimethoxysilane to the ethylene glycol diacrylate to the dicumyl peroxide to the TMTD in the step A1 is 2:1.3:1: 2; the mass ratio of the mixed material, the polyvinyl chloride and the dioctyl phthalate in the step A2 is 0.08:2: 1.
The polyvinyl chloride is high-polymerization degree polyvinyl chloride resin, and the high-polymerization degree polyvinyl chloride resin is XS-2 type polyvinyl chloride resin.
The plasticizer is prepared from dioctyl terephthalate and phosphate ester in a weight ratio of 1:1, and mixing the components in a ratio of 1.
The calcium-zinc composite stabilizer is prepared by the following method:
step B1: adding calcium stearate and zinc stearate into a kneading pot according to the mass ratio of 1:3, heating the kneading pot to 130 ℃, heating at the rotating speed of 60r/min while stirring, and preparing a molten material of calcium stearate and zinc stearate; uniformly spraying silane on the surface of hydrotalcite, and adding the hydrotalcite into a melt of calcium stearate and zinc stearate to prepare a main stabilizer; the mass ratio of the hydrotalcite to the molten materials of the calcium stearate and the zinc stearate is 1: 2;
step B2: and adding triphenyl phosphite, stearic acid and epoxidized soybean oil into the main stabilizer for mixing and dissolving, wherein the mass ratio of the main stabilizer to the triphenyl phosphite to the stearic acid to the epoxidized soybean oil is 4.5:3:1:3, cooling and slicing, and extruding and granulating by an extruder to obtain the calcium-zinc composite stabilizer.
The antioxidant is formed by mixing bisphenol A and bisphenol A phosphite ester in a ratio of 2:1.
The modified filler powder is prepared by the following steps:
step C1, uniformly mixing the calcined argil and the white carbon black in a weight ratio of 2:1, carrying out flash combustion in a flash combustion kiln at the temperature of 800 ℃ for 8s, taking out and cooling, adding a sodium hydroxide solution with the mass fraction of 4%, grinding for 1h, adding a hydrochloric acid solution with the mass fraction of 12%, adjusting the pH value to 4, aging for 10h, adding a sodium hydroxide solution with the mass fraction of 4%, adjusting the pH value of the grinding fluid to be neutral, filtering, and drying filter residues to obtain filler powder;
and step C2, adding castor oil, 1% of nano carbon and 1% of aluminum hypophosphite which are equivalent to the weight of the filler powder and are 2%, grinding for 1h together, adding 3-aminopropyl trimethoxy silane and 4% of polyethylene glycol which are equivalent to the weight of the filler powder and are 1%, placing in an ultrasonic disperser, and performing ultrasonic dispersion for 20min under the condition that the ultrasonic frequency is controlled to be 55kHz to obtain the modified filler powder.
Example 2
A heat-resistant environment-friendly cable insulation material comprises the following raw materials in parts by weight: 100 parts of modified cross-linked polyvinyl chloride, 25 parts of plasticizer, 8 parts of calcium-zinc composite stabilizer, 0.5 part of antioxidant, 2 parts of fatty acid amide, 20 parts of modified filler powder and 8 parts of colorant;
the preparation method of the heat-resistant environment-friendly cable insulating material comprises the following steps:
step S1: preheating a heating mixer to 50 ℃, adding modified crosslinked polyvinyl chloride, a calcium-zinc composite stabilizer, an antioxidant and fatty acid amide in parts by weight of the formula into the heating mixer, controlling the temperature in the heating mixer to be 72 ℃, stirring and mixing for 30min, uniformly mixing, and then putting into a single-screw extruder for extrusion granulation, wherein the processing temperature of a single screw is 140 ℃;
step S2: adding the material prepared in the step S1 and the modified filler powder in the formula weight part into a plasticator for plastication, setting the front roller temperature to be 130 ℃, the rear roller temperature to be 140 ℃, and feeding after wrapping the rollers for 8min to obtain a cable insulation precursor material;
step S3: and (4) putting the cable insulation precursor material prepared in the step (S2) and a colorant in the formula weight part into a kneading machine, kneading at the controlled rotating speed of 700r/min, uniformly kneading, putting into a double-screw extruder for extrusion granulation, controlling the processing temperature of the double-screw extruder to be 190 ℃, and drying, screening and packaging the granules to obtain the heat-resistant environment-friendly cable insulation material.
The modified cross-linked polyvinyl chloride is prepared by the following steps:
step A1: respectively adding gamma-mercaptopropyltrimethoxysilane, ethylene glycol diacrylate, dicumyl peroxide and TMTD into a mixer, stirring at the rotating speed of 300r/min, and uniformly mixing to obtain a mixture for later use;
step A2: adding the mixture, polyvinyl chloride and dioctyl phthalate into a double-screw extruder, and carrying out extrusion granulation to obtain polyvinyl chloride grafted particles;
step A3: and (3) placing the polyvinyl chloride grafted particles in water at the temperature of 85 ℃ for hydrolytic crosslinking, filtering and drying after 5 hours of hydrolytic crosslinking to obtain the modified crosslinked polyvinyl chloride.
The mass ratio of the gamma-mercaptopropyl-trimethoxysilane to the ethylene glycol diacrylate to the dicumyl peroxide to the TMTD in the step A1 is 2.5:1.4:1: 2; the mass ratio of the mixed material, the polyvinyl chloride and the dioctyl phthalate in the step A2 is 0.08:2: 1.
The polyvinyl chloride is high-polymerization degree polyvinyl chloride resin, and the high-polymerization degree polyvinyl chloride resin is SG-3 type polyvinyl chloride resin.
The plasticizer is formed by mixing phosphate, chlorinated paraffin and fatty acid ester in a ratio of 1:1: 1.
The calcium-zinc composite stabilizer is prepared by the following method:
step B1: adding calcium stearate and zinc stearate into a kneading pot according to the mass ratio of 1:3, heating the kneading pot to 140 ℃, heating at the rotating speed of 70r/min while stirring, and preparing a molten material of calcium stearate and zinc stearate; uniformly spraying silane on the surface of hydrotalcite, and adding the hydrotalcite into a melt of calcium stearate and zinc stearate to prepare a main stabilizer; the mass ratio of the hydrotalcite to the molten materials of the calcium stearate and the zinc stearate is 1: 2;
step B2: and adding triphenyl phosphite, stearic acid and epoxidized soybean oil into the main stabilizer for mixing and dissolving, wherein the mass ratio of the main stabilizer to the triphenyl phosphite to the stearic acid to the epoxidized soybean oil is 4.5:3:1:3, cooling and slicing, and extruding and granulating by an extruder to obtain the calcium-zinc composite stabilizer.
The antioxidant is bisphenol A and bisphenol A phosphite ester, wherein the weight ratio of bisphenol A to bisphenol A phosphite ester is 1:1, and mixing the components in a ratio of 1.
The modified filler powder is prepared by the following steps:
step C1, uniformly mixing the calcined argil and the white carbon black in a weight ratio of 2:1, carrying out flash combustion for 7s in a flash combustion kiln at the temperature of 830 ℃, taking out and cooling, adding a sodium hydroxide solution with the mass fraction of 4%, grinding for 1.5h, adding a hydrochloric acid solution with the mass fraction of 13%, adjusting the pH value to 4, aging for 12h, adding a sodium hydroxide solution with the mass fraction of 4%, adjusting the pH value of the grinding fluid to be neutral, filtering, and drying filter residues to obtain filler powder;
and step C2, adding castor oil, 1% of nano carbon and 2% of aluminum hypophosphite which are equivalent to the weight of the filler powder into the filler powder, grinding for 1.5h together, adding 3-aminopropyl trimethoxy silane and 4% of polyethylene glycol which are equivalent to the weight of the filler powder and 2%, placing in an ultrasonic disperser, and performing ultrasonic dispersion for 15min under the condition that the ultrasonic frequency is controlled to be 65kHz to obtain the modified filler powder.
Example 3
A heat-resistant environment-friendly cable insulation material comprises the following raw materials in parts by weight: 100 parts of modified cross-linked polyvinyl chloride, 40 parts of plasticizer, 10 parts of calcium-zinc composite stabilizer, 1 part of antioxidant, 3 parts of fatty acid amide, 30 parts of modified filler powder and 10 parts of colorant;
the preparation method of the heat-resistant environment-friendly cable insulating material comprises the following steps:
step S1: preheating a heating mixer to 50 ℃, adding modified crosslinked polyvinyl chloride, a calcium-zinc composite stabilizer, an antioxidant and fatty acid amide in parts by weight of the formula into the heating mixer, controlling the temperature in the heating mixer to be 75 ℃, stirring and mixing for 30min, uniformly mixing, and then putting into a single-screw extruder for extrusion granulation, wherein the processing temperature of a single screw is 150 ℃;
step S2: adding the material prepared in the step S1 and the modified filler powder in the formula weight part into a plasticator for plastication, setting the front roller temperature to be 140 ℃, the rear roller temperature to be 150 ℃, and feeding after wrapping the rollers for 8min to obtain a cable insulation precursor material;
step S3: and (4) putting the cable insulation precursor material prepared in the step (S2) and a colorant in parts by weight according to the formula into a kneading machine, kneading at the controlled rotating speed of 800r/min, uniformly kneading, putting into a double-screw extruder for extrusion granulation, controlling the processing temperature of the double-screw extruder to be 200 ℃, and drying, screening and packaging the granules to obtain the heat-resistant environment-friendly cable insulation material.
The modified cross-linked polyvinyl chloride is prepared by the following steps:
step A1: respectively adding gamma-mercaptopropyltrimethoxysilane, ethylene glycol diacrylate, dicumyl peroxide and TMTD into a mixer, stirring at the rotating speed of 400r/min, and uniformly mixing to obtain a mixture for later use;
step A2: adding the mixture, polyvinyl chloride and dioctyl phthalate into a double-screw extruder, and carrying out extrusion granulation to obtain polyvinyl chloride grafted particles;
step A3: and (3) placing the polyvinyl chloride grafted particles in water at the temperature of 90 ℃ for hydrolytic crosslinking, filtering and drying after 5 hours of hydrolytic crosslinking to obtain the modified crosslinked polyvinyl chloride.
The mass ratio of the gamma-mercaptopropyl-trimethoxysilane to the ethylene glycol diacrylate to the dicumyl peroxide to the TMTD in the step A1 is 3:1.5:1: 2; the mass ratio of the mixed material, the polyvinyl chloride and the dioctyl phthalate in the step A2 is 0.08:2: 1.
The polyvinyl chloride is high-polymerization degree polyvinyl chloride resin, and the high-polymerization degree polyvinyl chloride resin is SG-3 type polyvinyl chloride resin.
The plasticizer is formed by mixing dioctyl terephthalate and fatty acid ester in a ratio of 1: 2.
The calcium-zinc composite stabilizer is prepared by the following method:
step B1: adding calcium stearate and zinc stearate into a kneading pot according to the mass ratio of 1:3, heating the kneading pot to 150 ℃, heating at the rotating speed of 80r/min while stirring, and preparing a molten material of calcium stearate and zinc stearate; uniformly spraying silane on the surface of hydrotalcite, and adding the hydrotalcite into a melt of calcium stearate and zinc stearate to prepare a main stabilizer; the mass ratio of the hydrotalcite to the molten materials of the calcium stearate and the zinc stearate is 1: 2;
step B2: and adding triphenyl phosphite, stearic acid and epoxidized soybean oil into the main stabilizer for mixing and dissolving, wherein the mass ratio of the main stabilizer to the triphenyl phosphite to the stearic acid to the epoxidized soybean oil is 4.5:3:1:3, cooling and slicing, and extruding and granulating by an extruder to obtain the calcium-zinc composite stabilizer.
The antioxidant is formed by mixing bisphenol A and bisphenol A phosphite ester in a ratio of 1: 1.
The modified filler powder is prepared by the following steps:
step C1, uniformly mixing the calcined argil and the white carbon black in a weight ratio of 2:1, carrying out flash combustion in a flash combustion kiln at the temperature of 850 ℃ for 8s, taking out and cooling, adding a sodium hydroxide solution with the mass fraction of 4%, grinding for 2h, adding a hydrochloric acid solution with the mass fraction of 15%, adjusting the pH value to 5, aging for 15h, adding a sodium hydroxide solution with the mass fraction of 4%, adjusting the pH value of the grinding fluid to be neutral, filtering, and drying filter residues to obtain filler powder;
and step C2, adding castor oil, 2% of nano carbon and 3% of aluminum hypophosphite which are equivalent to 3% of the weight of the filler powder into the filler powder, grinding for 2 hours together, adding 3-aminopropyl trimethoxy silane and 5% of polyethylene glycol which are equivalent to 3% of the weight of the filler powder, placing in an ultrasonic disperser, and performing ultrasonic dispersion for 20min under the condition that the ultrasonic frequency is controlled to be 75kHz to obtain the modified filler powder.
Respectively taking a plurality of parts of the heat-resistant environment-friendly insulating material prepared in the previous embodiment with the same mass, respectively adding the parts into a flat vulcanizing machine, setting the working temperature of the flat vulcanizing machine to be 175 ℃, wiping a flat plate with alcohol and preheating the flat plate during tabletting, putting the insulating material into a mold after preheating, respectively separating two surfaces of the insulating material from the flat plate by using a polyester film, then putting the flat plate into the flat vulcanizing machine for prepressing, increasing the pressure to 5MPa after 3min, increasing the pressure to 10MPa after 5min, increasing the pressure to 15MPa after 5min, keeping the pressure for 5min, taking out a pressed tabletting sample, putting the pressed tabletting sample into cold water for cooling, checking and confirming that the pressed tabletting sample has no bubbles and impurities, then placing the tabletting sample for 24h, and releasing the internal stress of the sample;
several pieces of the test pieces of 0.2mm and 1mm thick were prepared according to the above method and used for testing tensile strength, elongation at break, thermal stability time, volume resistivity and dielectric strength, respectively, and the specific test results are shown in table 1.
TABLE 1
As shown in Table 1, the heat-resistant environment-friendly cable insulation material prepared by the formula and the preparation method has high tensile strength, high elongation at break, long thermal stability time, high volume resistivity and high dielectric strength, each performance index exceeds GB/T8815-2008 standard polyvinyl chloride plastic for electric wires and cables, and the insulation layer for manufacturing medium and low voltage cables has good heat-resistant and anti-aging effects.
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 (9)
1. The utility model provides a heat-resistant type environmental protection cable insulation material which characterized in that: the feed comprises the following raw materials in parts by weight: 100 parts of modified cross-linked polyvinyl chloride, 10-40 parts of plasticizer, 5-10 parts of calcium-zinc composite stabilizer, 0.1-1 part of antioxidant, 1-3 parts of fatty acid amide, 10-30 parts of modified filler powder and 0-10 parts of colorant;
the preparation method of the heat-resistant environment-friendly cable insulating material comprises the following steps:
step S1: preheating a heating mixer to 50 ℃, adding modified crosslinked polyvinyl chloride, a calcium-zinc composite stabilizer, an antioxidant and fatty acid amide in parts by weight into the heating mixer, controlling the temperature in the heating mixer to be 70-75 ℃, stirring and mixing for 30min, uniformly mixing, and then putting into a single-screw extruder for extrusion and granulation, wherein the processing temperature of a single screw is 130-150 ℃;
step S2: adding the material prepared in the step S1 and the modified filler powder in the formula weight part into a plasticator for plastication, setting the front roller temperature at 120-;
step S3: and (4) putting the cable insulation precursor material prepared in the step S2 and a colorant in the formula weight part into a kneading machine, kneading at the rotation speed of 600-.
2. The heat-resistant environment-friendly cable insulation material as claimed in claim 1, wherein: the modified cross-linked polyvinyl chloride is prepared by the following steps:
step A1: respectively adding gamma-mercaptopropyltrimethoxysilane, ethylene glycol diacrylate, dicumyl peroxide and TMTD into a mixer, stirring at the rotation speed of 200-400r/min, and uniformly mixing to obtain a mixture for later use;
step A2: adding the mixture, polyvinyl chloride and dioctyl phthalate into a double-screw extruder, and carrying out extrusion granulation to obtain polyvinyl chloride grafted particles;
step A3: and (3) placing the polyvinyl chloride grafted particles in water at the temperature of 80-90 ℃ for hydrolytic crosslinking, filtering and drying after 5 hours of hydrolytic crosslinking to obtain the modified crosslinked polyvinyl chloride.
3. The heat-resistant environment-friendly cable insulation material as claimed in claim 2, wherein: the mass ratio of the gamma-mercaptopropyl-trimethoxysilane to the ethylene glycol diacrylate to the dicumyl peroxide to the TMTD in the step A1 is 2-3:1.3-1.5:1: 2; the mass ratio of the mixed material, the polyvinyl chloride and the dioctyl phthalate in the step A2 is 0.08:2: 1.
4. The heat-resistant environment-friendly cable insulation material as claimed in claim 2, wherein: the polyvinyl chloride is high-polymerization degree polyvinyl chloride resin, and the high-polymerization degree polyvinyl chloride resin is any one of XS-2 type polyvinyl chloride resin and SG-3 type polyvinyl chloride resin.
5. The heat-resistant environment-friendly cable insulation material as claimed in claim 1, wherein: the plasticizer is formed by mixing one or more of dioctyl terephthalate, phosphate, chlorinated paraffin and fatty acid ester in any proportion.
6. The heat-resistant environment-friendly cable insulation material as claimed in claim 1, wherein: the calcium-zinc composite stabilizer is prepared by the following method:
step B1: adding calcium stearate and zinc stearate into a kneading pot according to the mass ratio of 1:3, heating the kneading pot to 130-150 ℃, heating at the rotating speed of 60-80r/min while stirring, and preparing a molten material of calcium stearate and zinc stearate; uniformly spraying silane on the surface of hydrotalcite, and adding the hydrotalcite into a melt of calcium stearate and zinc stearate to prepare a main stabilizer; the mass ratio of the hydrotalcite to the molten materials of the calcium stearate and the zinc stearate is 1: 2;
step B2: and adding triphenyl phosphite, stearic acid and epoxidized soybean oil into the main stabilizer for mixing and dissolving, wherein the mass ratio of the main stabilizer to the triphenyl phosphite to the stearic acid to the epoxidized soybean oil is 4.5:3:1:3, cooling and slicing, and extruding and granulating by an extruder to obtain the calcium-zinc composite stabilizer.
7. The heat-resistant environment-friendly cable insulation material as claimed in claim 1, wherein: the antioxidant is formed by mixing bisphenol A and bisphenol A phosphite ester in any proportion.
8. The heat-resistant environment-friendly cable insulation material as claimed in claim 1, wherein: the modified filler powder is prepared by the following steps:
step C1, uniformly mixing the calcined argil and the white carbon black in a weight ratio of 2:1, carrying out flash combustion in a flash combustion kiln at the temperature of 800-850 ℃, taking out and cooling, adding a sodium hydroxide solution with the mass fraction of 4% for grinding for 1-2h, then adding a hydrochloric acid solution with the mass fraction of 12-15%, adjusting the pH value to 4-5, aging for 10-15h, then adding a sodium hydroxide solution with the mass fraction of 4% for adjusting the pH value of the grinding fluid to be neutral, filtering, and drying the filter residue to obtain filler powder;
and step C2, adding castor oil accounting for 2-3% of the weight of the filler powder, nano carbon accounting for 1-2% of the weight of the filler powder and aluminum hypophosphite accounting for 1-3% of the weight of the filler powder into the filler powder, grinding for 1-2h together, adding 3-aminopropyl trimethoxy silane accounting for 1-3% of the weight of the filler powder and polyethylene glycol accounting for 4-5% of the weight of the filler powder, placing the mixture into an ultrasonic disperser, and performing ultrasonic dispersion for 10-20min under the condition that the ultrasonic frequency is controlled to be 55-75kHz to obtain the modified filler powder.
9. The preparation method of the heat-resistant environment-friendly cable insulation material as claimed in claim 1, wherein the preparation method comprises the following steps: the method specifically comprises the following steps:
step S1: preheating a heating mixer to 50 ℃, adding modified crosslinked polyvinyl chloride, a calcium-zinc composite stabilizer, an antioxidant and fatty acid amide in parts by weight into the heating mixer, controlling the temperature in the heating mixer to be 70-75 ℃, stirring and mixing for 30min, uniformly mixing, and then putting into a single-screw extruder for extrusion and granulation, wherein the processing temperature of a single screw is 130-150 ℃;
step S2: adding the material prepared in the step S1 and the modified filler powder in the formula weight part into a plasticator for plastication, setting the front roller temperature at 120-;
step S3: and (4) putting the cable insulation precursor material prepared in the step S2 and a colorant in the formula weight part into a kneading machine, kneading at the rotation speed of 600-.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110104080.5A CN112898700A (en) | 2021-01-26 | 2021-01-26 | Heat-resistant environment-friendly cable insulation material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110104080.5A CN112898700A (en) | 2021-01-26 | 2021-01-26 | Heat-resistant environment-friendly cable insulation material and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112898700A true CN112898700A (en) | 2021-06-04 |
Family
ID=76120185
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110104080.5A Pending CN112898700A (en) | 2021-01-26 | 2021-01-26 | Heat-resistant environment-friendly cable insulation material and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112898700A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114163690A (en) * | 2021-12-07 | 2022-03-11 | 山东和隆新材料科技有限公司 | Wetting PVC composite auxiliary agent and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101456977A (en) * | 2008-12-16 | 2009-06-17 | 浙江传化华洋化工有限公司 | Method for preparing Ca-Zn composite heat stabilizer |
| CN102585396A (en) * | 2011-12-28 | 2012-07-18 | 上海特缆电工科技有限公司 | Water-resistant polyvinyl chloride (PVC) cable insulating material |
| CN103524940A (en) * | 2013-09-30 | 2014-01-22 | 芜湖航天特种电缆厂 | Cold resistant pvc cable material and preparation method thereof |
| CN109867878A (en) * | 2019-01-28 | 2019-06-11 | 江苏鑫峰电缆有限公司 | Crosslinked with silicane polyvinyl chloride flexible plastic |
-
2021
- 2021-01-26 CN CN202110104080.5A patent/CN112898700A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101456977A (en) * | 2008-12-16 | 2009-06-17 | 浙江传化华洋化工有限公司 | Method for preparing Ca-Zn composite heat stabilizer |
| CN102585396A (en) * | 2011-12-28 | 2012-07-18 | 上海特缆电工科技有限公司 | Water-resistant polyvinyl chloride (PVC) cable insulating material |
| CN103524940A (en) * | 2013-09-30 | 2014-01-22 | 芜湖航天特种电缆厂 | Cold resistant pvc cable material and preparation method thereof |
| CN109867878A (en) * | 2019-01-28 | 2019-06-11 | 江苏鑫峰电缆有限公司 | Crosslinked with silicane polyvinyl chloride flexible plastic |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114163690A (en) * | 2021-12-07 | 2022-03-11 | 山东和隆新材料科技有限公司 | Wetting PVC composite auxiliary agent and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103724759B (en) | A kind of halogen-free flame-retardant organosilane self crosslinking polyolefin cable material and preparation method thereof | |
| CN103059404A (en) | Radiation cross-linking low-smoke halogen-free flame-retardant polyolefin insulating material and preparation method thereof | |
| CN108250747B (en) | Thermoplastic polyetherimide insulating and heat-conducting composite material and preparation method thereof | |
| CN105348646B (en) | A kind of modified polypropene base electric cable material with low smoke and halogen free and preparation method | |
| CN103450598A (en) | Modified polyvinyl chloride cable material | |
| CN111748162B (en) | Heat-conducting PVC composition and preparation method thereof | |
| CN104292702B (en) | Dynamic vulcanization polychloroethylene with high polymerization degree nitrile (HTBN) wire cable insulating/sheath material and preparation method thereof | |
| CN105131611A (en) | High-strength halogen-free fire resisting cable insulating plastic and preparation method thereof | |
| CN109251399A (en) | Soft low-smoke halogen-free high-flame-retardant oil-resistant cable material for high-voltage line in vehicle and preparation method thereof | |
| CN113736167A (en) | Weather-resistant silane crosslinked polyethylene overhead insulating material and preparation method thereof | |
| CN112143122A (en) | Heat-resistant environment-friendly flame-retardant cable insulating material and preparation method thereof | |
| CN106009196A (en) | Anti-static macromolecular power cable material and preparation method thereof | |
| CN111961274A (en) | Insulating material for photovoltaic cable and preparation method thereof | |
| CN114672131B (en) | Automatic micro-crosslinking halogen-free flame-retardant thermoplastic elastomer and preparation method thereof | |
| CN103554639A (en) | Production method of environment-friendly type halogen-free flame-retardant wire and cable | |
| CN112898700A (en) | Heat-resistant environment-friendly cable insulation material and preparation method thereof | |
| CN113943460A (en) | Environment-friendly irradiation rubber sheath material for flexible cable and preparation method thereof | |
| CN117024948A (en) | TPU (thermoplastic polyurethane) base material for high-temperature-resistant cable sheath and preparation method thereof | |
| CN115322497B (en) | Moisture-proof heat-resistant polyvinyl chloride cable sheath material, preparation method and application thereof, cable sheath, electric wire and cable | |
| CN110982186A (en) | Insulating layer of electric appliance connecting wire and preparation method thereof | |
| CN104212047B (en) | Generation Ⅲ nuclear power station shrinkage stress materials in the tube and preparation method thereof | |
| CN105111667A (en) | Novel halogen-free flame retardant modification thermoplastic elastomer data line sheath material and manufacturing method thereof | |
| CN114230940A (en) | Modified polyvinyl chloride flame-retardant bending-resistant sheath rubber material, preparation method and cable | |
| CN111117137B (en) | Preparation method of anti-shrinkage silane cross-linked low-smoke halogen-free flame-retardant insulating material for intelligent building cloth wires | |
| CN113943468A (en) | Flame-retardant CPVC cable protection pipe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20210806 Address after: 518101 317, HuaQuan building, No. 13, Zhiyang Road, Zhangge community, Fucheng street, Longhua District, Shenzhen, Guangdong Applicant after: Shenzhen Zhengkai Technology Co.,Ltd. Address before: 510000 kaileshi, 5 / F, Wanguo Plaza, 40 Qianjin Road, Haizhu District, Guangzhou, Guangdong Province Applicant before: Qiu Xiujuan |
|
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210604 |