CN117362800A - Urban rail cable sheath material with good anti-aging effect and preparation method thereof - Google Patents
Urban rail cable sheath material with good anti-aging effect and preparation method thereof Download PDFInfo
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- CN117362800A CN117362800A CN202311344690.8A CN202311344690A CN117362800A CN 117362800 A CN117362800 A CN 117362800A CN 202311344690 A CN202311344690 A CN 202311344690A CN 117362800 A CN117362800 A CN 117362800A
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- 239000000463 material Substances 0.000 title claims abstract description 51
- 230000003712 anti-aging effect Effects 0.000 title claims abstract description 17
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 27
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 20
- 230000032683 aging Effects 0.000 claims abstract description 15
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 10
- 229920013716 polyethylene resin Polymers 0.000 claims abstract description 9
- 239000006229 carbon black Substances 0.000 claims abstract description 6
- 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 claims abstract description 5
- 239000003063 flame retardant Substances 0.000 claims abstract description 5
- 239000003999 initiator Substances 0.000 claims abstract description 5
- 239000000314 lubricant Substances 0.000 claims abstract description 4
- 239000004014 plasticizer Substances 0.000 claims abstract description 4
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims description 54
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 48
- 238000006243 chemical reaction Methods 0.000 claims description 24
- 238000003756 stirring Methods 0.000 claims description 22
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 18
- 238000002390 rotary evaporation Methods 0.000 claims description 16
- 238000010438 heat treatment Methods 0.000 claims description 12
- FYSNRJHAOHDILO-UHFFFAOYSA-N thionyl chloride Chemical compound ClS(Cl)=O FYSNRJHAOHDILO-UHFFFAOYSA-N 0.000 claims description 11
- 230000004224 protection Effects 0.000 claims description 10
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 9
- 229910052757 nitrogen Inorganic materials 0.000 claims description 9
- ASVKKRLMJCWVQF-UHFFFAOYSA-N 3-buten-1-amine Chemical compound NCCC=C ASVKKRLMJCWVQF-UHFFFAOYSA-N 0.000 claims description 6
- YEOQCOZNFXPHHY-UHFFFAOYSA-N 4-(bromomethyl)-2,6-ditert-butylphenol Chemical compound CC(C)(C)C1=CC(CBr)=CC(C(C)(C)C)=C1O YEOQCOZNFXPHHY-UHFFFAOYSA-N 0.000 claims description 6
- 238000004440 column chromatography Methods 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 6
- 238000005406 washing Methods 0.000 claims description 6
- GVZXFVFTBUYBJD-UHFFFAOYSA-N 11-chloroundecanoic acid Chemical compound OC(=O)CCCCCCCCCCCl GVZXFVFTBUYBJD-UHFFFAOYSA-N 0.000 claims description 5
- 238000000746 purification Methods 0.000 claims description 4
- 239000002994 raw material Substances 0.000 claims description 4
- 239000004114 Ammonium polyphosphate Substances 0.000 claims description 3
- 235000019826 ammonium polyphosphate Nutrition 0.000 claims description 3
- 229920001276 ammonium polyphosphate Polymers 0.000 claims description 3
- 238000007865 diluting Methods 0.000 claims description 3
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims description 3
- 239000000347 magnesium hydroxide Substances 0.000 claims description 3
- 229910001862 magnesium hydroxide Inorganic materials 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 230000007935 neutral effect Effects 0.000 claims description 3
- 239000012299 nitrogen atmosphere Substances 0.000 claims description 3
- 239000006228 supernatant Substances 0.000 claims description 3
- XZZNDPSIHUTMOC-UHFFFAOYSA-N triphenyl phosphate Chemical compound C=1C=CC=CC=1OP(OC=1C=CC=CC=1)(=O)OC1=CC=CC=C1 XZZNDPSIHUTMOC-UHFFFAOYSA-N 0.000 claims description 3
- WYTZZXDRDKSJID-UHFFFAOYSA-N (3-aminopropyl)triethoxysilane Chemical compound CCO[Si](OCC)(OCC)CCCN WYTZZXDRDKSJID-UHFFFAOYSA-N 0.000 claims description 2
- 239000007864 aqueous solution Substances 0.000 claims description 2
- 239000012046 mixed solvent Substances 0.000 claims description 2
- 238000010025 steaming Methods 0.000 claims 1
- 230000006750 UV protection Effects 0.000 abstract description 6
- 239000011203 carbon fibre reinforced carbon Substances 0.000 abstract description 4
- 238000007254 oxidation reaction Methods 0.000 abstract description 4
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 3
- 230000001590 oxidative effect Effects 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 6
- 239000000047 product Substances 0.000 description 6
- 238000010992 reflux Methods 0.000 description 6
- 238000001291 vacuum drying Methods 0.000 description 6
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical group C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 description 4
- 229920002545 silicone oil Polymers 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- XNGIFLGASWRNHJ-UHFFFAOYSA-L phthalate(2-) Chemical compound [O-]C(=O)C1=CC=CC=C1C([O-])=O XNGIFLGASWRNHJ-UHFFFAOYSA-L 0.000 description 3
- CPELXLSAUQHCOX-UHFFFAOYSA-N Hydrogen bromide Chemical compound Br CPELXLSAUQHCOX-UHFFFAOYSA-N 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000010534 nucleophilic substitution reaction Methods 0.000 description 2
- 150000003254 radicals Chemical group 0.000 description 2
- SCPYDCQAZCOKTP-UHFFFAOYSA-N silanol Chemical compound [SiH3]O SCPYDCQAZCOKTP-UHFFFAOYSA-N 0.000 description 2
- 238000003878 thermal aging Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 150000001263 acyl chlorides Chemical class 0.000 description 1
- 238000005917 acylation reaction Methods 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007336 electrophilic substitution reaction Methods 0.000 description 1
- 238000009422 external insulation Methods 0.000 description 1
- 229910000042 hydrogen bromide Inorganic materials 0.000 description 1
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 1
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- SSDSCDGVMJFTEQ-UHFFFAOYSA-N octadecyl 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)CCC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 SSDSCDGVMJFTEQ-UHFFFAOYSA-N 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 125000005498 phthalate group Chemical group 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 239000003223 protective agent Substances 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- 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
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
-
- 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
- H01B3/441—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 alkenes
-
- 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
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- 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
-
- 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)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a urban rail cable sheath material with good anti-aging effect and a preparation method thereof, and belongs to the technical field of wires and cables. 90-100 parts of polyethylene resin, 1-3 parts of carbon black, 4-9 parts of flame retardant, 0.04-0.24 part of initiator, 3-7 parts of plasticizer, 2-5 parts of lubricant and 4-9 parts of auxiliary agent are added into a double screw extruder to be melted, mixed and extruded, so that the urban rail cable sheath material with good anti-aging effect is prepared. The hindered phenol group can inhibit the progress of oxidation reaction, and the thermal oxidative aging resistance of the sheath material is improved; titanium dioxide can improve the ultraviolet resistance of the sheath material; the chemical action of the carbon-carbon double bond and the polyethylene resin and the compatibility of the long carbon chain enable the auxiliary agent to be stably existing in the sheath material and not easy to fall off due to the influence of external environment, so that the sheath material has excellent and stable thermal-oxidative aging resistance and ultraviolet resistance.
Description
Technical Field
The invention belongs to the technical field of wires and cables, and particularly relates to a urban rail cable sheath material with good anti-aging effect and a preparation method thereof.
Background
With the rapid development of economy, the electric wires and cables are widely applied in various industries and fields, the rapid development of urban rail transit is promoted by the acceleration of urban process and the rapid increase of population, the electric wires and cables play an important role in the construction and use processes of urban rail transit infrastructures, and the service lives of the cables are closely related to cable sheath materials.
The cable has the characteristics of internal power on and external insulation, is a wire product for electric energy or signal transmission, and is usually composed of a plurality of wires or groups of wires, and although the surface of the existing cable is coated with a layer of sheath material for external protection, the cable is generally exposed outdoors for a long time, under the condition of long-time direct sunlight or contact of wind, rain and snow, the external sheath material quickly generates an aging phenomenon, meanwhile, in the transportation or use process of the cable, the sheath layer on the cable is easy to crack due to bending, so that external liquid easily enters the cable, the phenomenon of short circuit of the cable is more serious, the aging resistance of the whole cable is poor, and the service life of the cable is seriously reduced. Most of sheath materials of urban rail cables still have the problem of poor ageing resistance in the prior art. Therefore, there is a need to design a city rail cable sheath material with good anti-aging effect.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a urban rail cable sheath material with good anti-aging effect and a preparation method thereof.
The aim of the invention can be achieved by the following technical scheme:
a city rail cable sheath material with good anti-aging effect comprises the following raw materials in parts by weight: 90-100 parts of polyethylene resin, 1-3 parts of carbon black, 4-9 parts of flame retardant, 0.04-0.24 part of initiator, 3-7 parts of plasticizer, 2-5 parts of lubricant and 4-9 parts of auxiliary agent;
further, the flame retardant is one of triphenyl phosphate, magnesium hydroxide and ammonium polyphosphate.
Further, the initiator is dicumyl peroxide.
Further, the plasticizer is phthalate.
Further, the lubricant is silicone oil.
Further, the auxiliary agent is prepared by the following steps:
s1, sequentially adding 2, 6-di-tert-butyl-4-bromomethylphenol, 3-butene-1-amine and toluene into a three-neck flask at room temperature under the protection of nitrogen, uniformly stirring, then adding triethylamine, heating to 90 ℃ while stirring, carrying out reflux reaction at 90 ℃ for 8 hours, and carrying out rotary evaporation, column chromatography purification, rotary evaporation again and vacuum drying at 100 ℃ for 12 hours after the reaction is finished to obtain an intermediate 1; the ratio of the amounts of 2, 6-di-tert-butyl-4-bromomethylphenol, 3-buten-1-amine, triethylamine, toluene was 14.9g:3.6g:10mL:100mL;
br of 2, 6-di-tert-butyl-4-bromomethylphenol and NH of 3-buten-1-amine 2 Nucleophilic substitution occurs, and triethylamine removes hydrogen bromide generated by the reaction to obtain intermediate 1, the reaction process is as follows:
s2, sequentially adding 11-chloroundecanoic acid, an intermediate 1 and toluene into a three-neck flask at room temperature under the protection of nitrogen, stirring uniformly, then adding triethylamine, heating to 90 ℃ while stirring, carrying out reflux reaction for 8 hours at 90 ℃, and carrying out rotary evaporation, column chromatography purification, rotary evaporation again and vacuum drying at 100 ℃ for 12 hours after the reaction is finished to obtain an intermediate 2; the ratio of the amounts of 11-chloroundecanoic acid, intermediate 1, triethylamine and toluene was 4.5g:6.1g:10mL:100mL;
11-chloroundecanoic acid-Cl and intermediate 1-NH 2 Nucleophilic substitution occurs, and triethylamine removes hydrogen chloride generated by the reaction to obtain intermediate 2, the reaction process is as follows:
s3, adding the intermediate 2 and sulfoxide chloride into a three-neck flask under the protection of room temperature and nitrogen, heating to 75 ℃ while stirring, carrying out reflux reaction for 5h, cooling to room temperature after the reaction is finished, carrying out rotary evaporation, and finally carrying out vacuum drying at 80 ℃ for 12h to obtain an intermediate 3; the dosage ratio of the intermediate 2 to the thionyl chloride is 4.9g:25mL;
electrophilic substitution reaction is carried out between electrophilic reagent thionyl chloride and intermediate 2, and the reaction process is as follows:
s4, adding the intermediate 3, anhydrous toluene and 3-aminopropyl triethoxysilane (KH 550) into a three-neck flask at room temperature in a nitrogen atmosphere, stirring, then slowly adding anhydrous triethylamine, stirring for 20h, filtering after the reaction is finished, washing 3 times by using a mixed solvent of the anhydrous toluene and the anhydrous ethanol, and drying the washed product at 105 ℃ for 12h to obtain an intermediate 4; the dosage ratio of the intermediate 3, KH550 and anhydrous triethylamine is 5.1g:2.2g:10mL;
the acyl chloride on the intermediate 3 and the amino on the KH550 are subjected to acylation reaction under the action of triethylamine, and the reaction process is as follows:
s5, diluting the intermediate 4 with absolute ethyl alcohol, fully mixing the diluted intermediate 4 with a titanium dioxide aqueous solution with the pH value of 5 in a three-neck flask, heating to 65 ℃, stirring for 10 hours, cooling, filtering, washing the supernatant with absolute ethyl alcohol to be neutral, and finally drying at 80 ℃ for 12 hours to obtain an auxiliary agent; the mass ratio of the intermediate 4 to the titanium dioxide is 1:5.
the auxiliary agent structure contains hindered phenol groups, and the hindered phenol groups can prevent free radical chain reaction by capturing free radicals, inhibit oxidation reaction, and further improve the thermal oxidation aging resistance of the material; the silanol is formed by hydrolysis of the silanol bond in the auxiliary agent structure, and then the silanol is combined with the titanium dioxide through chemical bonds, so that the titanium dioxide is highly dispersed and can fully and stably exert ultraviolet resistance, and the titanium dioxide can reflect and scatter ultraviolet rays and absorb ultraviolet rays due to small particle size and large activity, so that the ultraviolet ray has stronger blocking capability to ultraviolet rays, and is a physical shielding type ultraviolet ray protective agent with excellent performance; the auxiliary agent structure contains a long carbon chain, the compatibility of the auxiliary agent can be improved, in addition, the auxiliary agent structure also contains a carbon-carbon double bond, the carbon-carbon double bond and the polyethylene resin can generate chemical action under the action of an initiator, and the two factors enable the auxiliary agent to be stably present in the sheath material and not easily fall off under the influence of external environment, so that the sheath material has excellent and stable thermo-oxidative aging resistance and ultraviolet resistance.
A preparation method of a urban rail cable sheath material with good anti-aging effect comprises the following steps:
the raw materials are added into a double-screw extruder according to a proportion, melted and mixed and extruded, and the urban rail cable sheath material with good anti-aging effect is prepared.
The invention has the beneficial effects that: the hindered phenol group can inhibit the progress of oxidation reaction, and the thermal oxidative aging resistance of the sheath material is improved; titanium dioxide can improve the ultraviolet resistance of the sheath material; the chemical action of the carbon-carbon double bond and the polyethylene resin and the compatibility of the long carbon chain enable the auxiliary agent to be stably existing in the sheath material and not easy to fall off due to the influence of external environment, so that the sheath material has excellent and stable thermal-oxidative aging resistance and ultraviolet resistance.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
The preparation auxiliary agent specifically comprises the following steps:
s1, sequentially adding 14.9g of 2, 6-di-tert-butyl-4-bromomethylphenol, 3.6g of 3-butene-1-amine and 100mL of toluene into a 250mL three-neck flask at room temperature under the protection of nitrogen, uniformly stirring, then adding 10mL of triethylamine, heating to 90 ℃ while stirring, carrying out reflux reaction for 8 hours at 90 ℃, carrying out rotary evaporation after the reaction is finished, purifying by using column chromatography after rotary evaporation until the reaction is semi-dry, finally rotary evaporation of the separated product until the separated product is semi-dry, and vacuum drying at 100 ℃ for 12 hours to obtain an intermediate 1;
s2, sequentially adding 4.5g of 11-chloroundecanoic acid, 6.1g of intermediate 1 and 100mL of toluene into a 250mL three-neck flask at room temperature under the protection of nitrogen, uniformly stirring, then adding 10mL of triethylamine, heating to 90 ℃ while stirring, carrying out reflux reaction for 8 hours at 90 ℃, carrying out rotary evaporation after the reaction is finished, purifying by using column chromatography after the rotary evaporation is finished to be semi-dry, finally carrying out rotary evaporation on the separated product to be semi-dry, and carrying out vacuum drying at 100 ℃ for 12 hours to obtain an intermediate 2;
s3, adding 4.9g of the intermediate 2 and 25mL of sulfoxide chloride into a 50mL three-neck flask under the protection of nitrogen at room temperature, heating to 75 ℃ while stirring, carrying out reflux reaction for 5h, cooling to room temperature after the reaction is finished, carrying out rotary evaporation to remove excessive sulfoxide chloride, and finally carrying out vacuum drying at 80 ℃ for 12h to obtain an intermediate 3;
s4, adding 5.1g of intermediate 3, 200mL of anhydrous toluene and 2.2g of KH550 into a three-necked flask at room temperature in a nitrogen atmosphere, stirring, slowly adding 10mL of anhydrous triethylamine, stirring for 20h, filtering after the reaction is finished, washing 3 times with the anhydrous toluene and the anhydrous ethanol, and drying the washed product at 105 ℃ for 12h to obtain an intermediate 4;
s5, uniformly mixing 20g of titanium dioxide and 200mL of deionized water, dropwise adding concentrated hydrochloric acid to adjust the pH value to 5, then pouring into a 500mL three-neck flask, diluting 4g of intermediate 4 with 15mL of absolute ethyl alcohol, adding into the three-neck flask, heating to 65 ℃ and stirring for 10 hours, cooling to room temperature, filtering, washing the supernatant with absolute ethyl alcohol to be neutral, and finally drying at 80 ℃ for 12 hours to obtain the auxiliary agent.
Example 2
The preparation auxiliary agent specifically comprises the following steps:
and (5) removing the steps S4 and S5 without changing the rest steps to obtain the auxiliary agent.
Example 3
The preparation method of the cable sheath material specifically comprises the following steps:
90 parts of polyethylene resin, 1 part of carbon black, 4 parts of magnesium hydroxide, 0.04 part of dicumyl peroxide, 3 parts of phthalate, 2 parts of silicone oil and 4 parts of auxiliary agent of example 1 are added into a double-screw extruder according to a certain proportion, melted and mixed, and extruded, so that the urban rail cable sheath material is obtained.
Example 4
The preparation method of the cable sheath material specifically comprises the following steps:
95 parts of polyethylene resin, 2 parts of carbon black, 5 parts of ammonium polyphosphate, 0.05 part of dicumyl peroxide, 4 parts of phthalate, 3 parts of silicone oil and 5 parts of auxiliary agent of the embodiment 1 are added into a double-screw extruder in proportion to be melted and mixed, and then extruded, so that the urban rail cable sheath material is obtained.
Example 5
The preparation method of the cable sheath material specifically comprises the following steps:
100 parts of polyethylene resin, 3 parts of carbon black, 9 parts of triphenyl phosphate, 0.24 part of dicumyl peroxide, 7 parts of phthalate, 5 parts of silicone oil and 9 parts of auxiliary agent of example 1 are added into a double-screw extruder in proportion, melted and mixed, and extruded, so that the urban rail cable sheath material is obtained.
Comparative example 1
The rest steps are unchanged, and the auxiliary agent obtained in the example 5 is replaced by the auxiliary agent obtained in the example 2, so that the urban rail cable sheath material is obtained.
Comparative example 2
The rest steps are unchanged, and the auxiliary agent in the embodiment 5 is removed to obtain the urban rail cable sheath material.
Comparative example 3
The rest steps are unchanged, and the auxiliary agent in the example 5 is replaced by an antioxidant 1076, so that the urban rail cable sheath material is obtained.
The mechanical and physical properties of the urban rail cable sheath materials of examples 3-5 and comparative examples 1-3 were tested according to GB/T2951-2008 for the relevant properties, the urban rail cable sheath materials were tested according to GB/T3512-2001 for the heat aging resistance, and the urban rail cable sheath materials were tested according to GB/T16585-1996 for the ultraviolet light aging resistance, the specific test results are shown in the following table:
as is clear from the above table for comparative example 2 and example 5, no auxiliary agent causes a rapid decrease in tensile strength, elongation at break, thermal aging resistance and uv aging resistance of the cable sheath material; as is clear from the above tables in comparative example 3 and example 5, the cable sheath material obtained in the examples of the present invention is superior to the cable sheath material obtained by the existing antioxidant in terms of tensile strength, elongation at break, thermal aging resistance and ultraviolet aging resistance.
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, 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 present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. 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 merely illustrative and explanatory of the invention, as various modifications and additions may be made to the particular embodiments described, or in a similar manner, by those skilled in the art, without departing from the scope of the invention or exceeding the scope of the invention as defined in the claims.
Claims (8)
1. The urban rail cable sheath material with good anti-aging effect is characterized by comprising the following raw materials in parts by weight: 90-100 parts of polyethylene resin, 1-3 parts of carbon black, 4-9 parts of flame retardant, 0.04-0.24 part of initiator, 3-7 parts of plasticizer, 2-5 parts of lubricant and 4-9 parts of auxiliary agent;
wherein, the auxiliary agent is prepared by the following steps:
s1, adding 2, 6-di-tert-butyl-4-bromomethylphenol, 3-butene-1-amine, toluene and triethylamine into a flask at room temperature under the protection of nitrogen, uniformly stirring, heating to 90 ℃, reacting for 8 hours, and performing rotary evaporation, column chromatography purification, rotary evaporation again and drying at 100 ℃ for 12 hours after the reaction is finished to obtain an intermediate 1;
s2, adding 11-chloroundecanoic acid, an intermediate 1, toluene and triethylamine into a flask at room temperature under the protection of nitrogen, uniformly stirring, heating to 90 ℃, reacting for 8 hours, performing rotary evaporation, column chromatography purification, rotary evaporation again and drying at 100 ℃ for 12 hours after the reaction is finished to obtain an intermediate 2;
s3, adding the intermediate 2 and thionyl chloride into a flask at room temperature under the protection of nitrogen, heating to 75 ℃, reacting for 5 hours, cooling to room temperature, rotary steaming, and drying at 80 ℃ for 12 hours to obtain an intermediate 3;
s4, adding the intermediate 3, anhydrous toluene and 3-aminopropyl triethoxysilane into a flask at room temperature in a nitrogen atmosphere, stirring, adding anhydrous triethylamine, stirring for 20 hours, filtering, washing with a mixed solvent of the anhydrous toluene and the anhydrous ethanol, and drying at 105 ℃ for 12 hours to obtain an intermediate 4;
s5, diluting the intermediate 4 with absolute ethyl alcohol, fully mixing the diluted intermediate 4 with a titanium dioxide aqueous solution with the pH value of 5 in a flask, heating to 65 ℃, stirring for 10 hours, cooling, filtering, washing the supernatant with absolute ethyl alcohol to be neutral after the completion of the stirring, and finally drying at 80 ℃ for 12 hours to obtain the auxiliary agent.
2. The urban rail cable sheath material with good anti-aging effect according to claim 1, wherein the dosage ratio of the 2, 6-di-tert-butyl-4-bromomethylphenol, 3-butene-1-amine, triethylamine and toluene in the step S1 is 14.9g:3.6g:10mL:100mL.
3. The urban rail cable sheath material with good anti-aging effect according to claim 1, wherein the ratio of the dosage of 11-chloroundecanoic acid, the intermediate 1, triethylamine and toluene in the step S2 is 4.5g:6.1g:10mL:100mL.
4. The urban rail cable sheath material with good ageing resistance according to claim 1, wherein the dosage ratio of the intermediate 2 to thionyl chloride in the step S3 is 4.9g:25mL.
5. The urban rail cable sheath material with good anti-aging effect according to claim 1, wherein the dosage ratio of the intermediate 3, KH550 and anhydrous triethylamine in the step S4 is 5.1g:2.2g:10mL.
6. The urban rail cable sheath material with good ageing resistance according to claim 1, wherein the mass ratio of the intermediate 4 to the titanium dioxide in the step S5 is 1:5.
7. the urban rail cable sheath material with good anti-aging effect according to claim 1, wherein the flame retardant is one of triphenyl phosphate, magnesium hydroxide and ammonium polyphosphate.
8. The preparation method of the urban rail cable sheath material with good anti-aging effect as claimed in claim 1, which is characterized by comprising the following steps:
the raw materials are added into a double-screw extruder according to a proportion, melted and mixed and extruded, and the urban rail cable sheath material with good anti-aging effect is prepared.
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