CN116589793B - Anti-aging polypropylene cable material and preparation method and application thereof - Google Patents
Anti-aging polypropylene cable material and preparation method and application thereof Download PDFInfo
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- CN116589793B CN116589793B CN202310689356.XA CN202310689356A CN116589793B CN 116589793 B CN116589793 B CN 116589793B CN 202310689356 A CN202310689356 A CN 202310689356A CN 116589793 B CN116589793 B CN 116589793B
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- 239000000463 material Substances 0.000 title claims abstract description 175
- -1 polypropylene Polymers 0.000 title claims abstract description 96
- 239000004743 Polypropylene Substances 0.000 title claims abstract description 78
- 229920001155 polypropylene Polymers 0.000 title claims abstract description 78
- 230000003712 anti-aging effect Effects 0.000 title claims abstract description 37
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 53
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 50
- 239000002105 nanoparticle Substances 0.000 claims abstract description 22
- 239000003381 stabilizer Substances 0.000 claims abstract description 19
- 239000002274 desiccant Substances 0.000 claims abstract description 17
- 239000012760 heat stabilizer Substances 0.000 claims abstract description 15
- 238000007539 photo-oxidation reaction Methods 0.000 claims abstract description 14
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 12
- ICNFHJVPAJKPHW-UHFFFAOYSA-N 4,4'-Thiodianiline Chemical group C1=CC(N)=CC=C1SC1=CC=C(N)C=C1 ICNFHJVPAJKPHW-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 9
- 229920000570 polyether Polymers 0.000 claims abstract description 9
- 239000004611 light stabiliser Substances 0.000 claims abstract description 7
- DYDNPESBYVVLBO-UHFFFAOYSA-N formanilide Chemical compound O=CNC1=CC=CC=C1 DYDNPESBYVVLBO-UHFFFAOYSA-N 0.000 claims abstract description 6
- DLVFMWDAUAYKSG-UHFFFAOYSA-N 1,1-dibutyl-3-hydroxyurea Chemical compound CCCCN(C(=O)NO)CCCC DLVFMWDAUAYKSG-UHFFFAOYSA-N 0.000 claims abstract description 3
- 238000006243 chemical reaction Methods 0.000 claims description 48
- 238000003756 stirring Methods 0.000 claims description 45
- 238000002156 mixing Methods 0.000 claims description 42
- 230000002745 absorbent Effects 0.000 claims description 34
- 239000002250 absorbent Substances 0.000 claims description 34
- 238000010521 absorption reaction Methods 0.000 claims description 30
- 239000002904 solvent Substances 0.000 claims description 11
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims description 10
- 239000011259 mixed solution Substances 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 230000004907 flux Effects 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- 230000008569 process Effects 0.000 claims description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 8
- GTCAXTIRRLKXRU-UHFFFAOYSA-N methyl carbamate Chemical compound COC(N)=O GTCAXTIRRLKXRU-UHFFFAOYSA-N 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 238000002844 melting Methods 0.000 claims description 7
- 230000008018 melting Effects 0.000 claims description 7
- JLZIIHMTTRXXIN-UHFFFAOYSA-N 2-(2-hydroxy-4-methoxybenzoyl)benzoic acid Chemical group OC1=CC(OC)=CC=C1C(=O)C1=CC=CC=C1C(O)=O JLZIIHMTTRXXIN-UHFFFAOYSA-N 0.000 claims description 5
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 claims description 5
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims description 5
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 claims description 5
- 239000008187 granular material Substances 0.000 claims description 5
- 238000007781 pre-processing Methods 0.000 claims description 5
- YGSDEFSMJLZEOE-UHFFFAOYSA-M salicylate Chemical group OC1=CC=CC=C1C([O-])=O YGSDEFSMJLZEOE-UHFFFAOYSA-M 0.000 claims description 5
- 238000001132 ultrasonic dispersion Methods 0.000 claims description 5
- 239000008096 xylene Substances 0.000 claims description 5
- RWCCWEUUXYIKHB-UHFFFAOYSA-N benzophenone Chemical compound C=1C=CC=CC=1C(=O)C1=CC=CC=C1 RWCCWEUUXYIKHB-UHFFFAOYSA-N 0.000 claims description 4
- 229910052681 coesite Inorganic materials 0.000 claims description 4
- 229910052906 cristobalite Inorganic materials 0.000 claims description 4
- 239000000377 silicon dioxide Substances 0.000 claims description 4
- 235000012239 silicon dioxide Nutrition 0.000 claims description 4
- 229910052682 stishovite Inorganic materials 0.000 claims description 4
- 229910052905 tridymite Inorganic materials 0.000 claims description 4
- 239000012965 benzophenone Substances 0.000 claims description 3
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 2
- FLPKSBDJMLUTEX-UHFFFAOYSA-N bis(1,2,2,6,6-pentamethylpiperidin-4-yl) 2-butyl-2-[(3,5-ditert-butyl-4-hydroxyphenyl)methyl]propanedioate Chemical group C1C(C)(C)N(C)C(C)(C)CC1OC(=O)C(C(=O)OC1CC(C)(C)N(C)C(C)(C)C1)(CCCC)CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 FLPKSBDJMLUTEX-UHFFFAOYSA-N 0.000 claims description 2
- 239000001110 calcium chloride Substances 0.000 claims description 2
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 2
- QUAMTGJKVDWJEQ-UHFFFAOYSA-N octabenzone Chemical compound OC1=CC(OCCCCCCCC)=CC=C1C(=O)C1=CC=CC=C1 QUAMTGJKVDWJEQ-UHFFFAOYSA-N 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 239000000758 substrate Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 1
- 230000032683 aging Effects 0.000 abstract description 17
- 239000006097 ultraviolet radiation absorber Substances 0.000 abstract description 16
- 230000008901 benefit Effects 0.000 abstract description 4
- 229910004298 SiO 2 Inorganic materials 0.000 abstract 2
- 230000008859 change Effects 0.000 description 16
- 230000000052 comparative effect Effects 0.000 description 13
- 238000012360 testing method Methods 0.000 description 10
- 239000002994 raw material Substances 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 5
- 239000004033 plastic Substances 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 239000002861 polymer material Substances 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
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- 238000001556 precipitation Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 230000006750 UV protection Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000010525 oxidative degradation reaction Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920006295 polythiol Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000003017 thermal stabilizer Substances 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
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
-
- 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
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- 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
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3045—Sulfates
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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
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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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
- 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
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- 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)
- Organic Insulating Materials (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
The invention relates to the technical field of polypropylene cable materials, in particular to an anti-aging polypropylene cable material and a preparation method and application thereof. The anti-aging polypropylene cable material comprises the following components in parts by weight: 40-60 parts of polypropylene; 2-4 parts of an antioxidant; 0.5-1.5 parts of ultraviolet absorber; 1-3 parts of a heat stabilizer; 1-3 parts of drying agent; 2-4 parts of nano particles and 20-40 parts of polyether TPU; the nano particles are SiO 2、TiO2, and the weight ratio of the SiO 2、TiO2 to the nano particles is 1:1.5; the antioxidant is a thioaniline photooxidation stabilizer, one of a phenylformamide photooxidation stabilizer and dibutyl hydroxyurea and an isodiphenyl benzotriazine siloxane light stabilizer, and the weight ratio of the three components in the antioxidant is 3:2:2. the invention improves the ageing resistance and the service life of the cable material, can effectively prolong the service life of the cable, and has important application value and economic benefit.
Description
Technical Field
The invention relates to the technical field of polypropylene cable materials, in particular to an anti-aging polypropylene cable material and a preparation method and application thereof.
Background
The cable is an indispensable power transmission tool in modern society, and in the fields of power, communication and the like, the cable material is required to have higher oxidation resistance, durability and heat resistance.
With the continuous upgrade of power equipment, the requirements on the performance of cable materials are higher and higher, and the requirements on the high-temperature stability, the ageing resistance, the flame retardance, the ultraviolet resistance and the like of the cable materials are put forward, at present, the cable production enterprises at home and abroad commonly adopt polyethylene, polyvinyl chloride and other plastics to manufacture the cable, but the materials are easy to age, the service life of the material is reduced, and the production and the use are not facilitated
The polypropylene cable material in the current market has good physical properties, is easy to age and degrade due to the long service life and severe environment, is easily affected by factors such as mechanical damage and the like, reduces the service life and safety of the cable, causes bad results, has poor ageing resistance and is easily affected by external factors such as oxidation and ultraviolet rays, thereby shortening the service life of the cable and seriously affecting the stability and safety of electric power and communication systems.
At present, some researches have proposed that an anti-aging agent is added into a cable material, so that the service life of the cable can be effectively prolonged, and the safety of the cable can be improved.
However, the existing anti-aging polypropylene cable material still has some defects, such as easy melting, embrittlement and the like under high-temperature environment, and particularly oxidative degradation is easy to occur in the manufacturing and processing processes of the polypropylene cable material, so that the selection of an effective composite antioxidant system is very critical.
Based on the above, the invention provides an anti-aging polypropylene cable material, a preparation method and application thereof to solve the problems.
Disclosure of Invention
The invention aims to provide an anti-aging polypropylene cable material, a preparation method and application thereof, wherein an anti-aging agent is added into a polypropylene raw material, so that the anti-aging performance and the service life of the cable material are improved, nano particles are added in the preparation process, organic matters such as free radicals and hydroxyl groups can be absorbed to form a more effective barrier, the anti-aging performance of the polypropylene cable is further improved, in the mixing treatment, a material obtained by uniformly mixing a base material with an antioxidant, an ultraviolet absorbent and an auxiliary material, a drying agent and a heat stabilizer are added for three times, the polypropylene raw material and the anti-aging agent can be uniformly mixed, the problems of layering and precipitation between the additive and the polypropylene raw material are avoided, the consistency and the quality stability of the cable material are ensured, and meanwhile, the cable material has excellent high temperature resistance, the service life of the cable can be effectively prolonged, and important application value and economic benefit are provided.
In order to achieve the above effects, the present invention provides the following technical solutions:
The antioxidant comprises a thioaniline photooxidation stabilizer, one of a phenylformamide photooxidation stabilizer and dibutyl hydroxyurea and an isodiphenyl benzotriazine siloxane light stabilizer, and the weight ratio of the three components in the antioxidant is 3:2:2, the nano particles are SiO2 and TiO2, the average particle size is 50nm, and the weight ratio of the SiO2 to the TiO2 is 1:1.5.
The three components in the antioxidant are compounded according to Sup>A certain mass ratio to form Sup>A stable ternary compound antioxidant system, wherein the main functions of the phosphorus comparison light stabilizer and the thioaniline photooxidation stabilizer are to eliminate free radicals and prevent oxidation reaction from proceeding through reaction with the free radicals, so that the weather resistance of the polymer material is improved, the service life of the polymer material is prolonged, the main functions of the phenylformamide photooxidation stabilizer and the hydroxy dibutyl ureSup>A are to absorb UV-A and UV-B, the free radicals generated by ultraviolet radiation and the breakage of polymer molecular chains are reduced, the main functions of the polythioether photooxidation stabilizer are to absorb the free radicals generated in ultraviolet and thermal oxygen environments, and stabilize the molecular chain structure of the polymer material, and the ageing and degradation of the material are delayed or inhibited. The collocation of the three different types of antioxidants makes up for the lack of the anti-aging function of a single antioxidant, and the generated synergistic effect can effectively delay the aging process of the polypropylene cable material.
Preferably, the specific type of thioaniline photo-oxygen stabilizer is Cyasorb UV-3346 or Tinuvin 880, and the specific type of phenylformamide photo-oxygen stabilizer is Tinuvin 144 or Chimassorb 81.
Preferably, the ultraviolet absorber is one of benzoylmethoxy ethoxy aniline ultraviolet absorber, isodibenzene siloxane ultraviolet absorber, benzophenone ultraviolet absorber and methyl carbamate ultraviolet absorber. The specific type of the benzoyl methoxyl ethoxy anilines ultraviolet absorbent is ethyl 2- (4-benzoyl methoxyl-2-ethoxyphenylamino) acetate, the specific type of the benzophenone ultraviolet absorbent is 2-chlorophenyl benzophenone, and the specific type of the methyl carbamate ultraviolet absorbent is dihydroxybenzophenone methyl formate. The ultraviolet absorber is used for improving the heat resistance of the cable material, can provide very good heat resistance for the cable material on the basis of not changing the original structural characteristics of the cable material, and enhances the comprehensive use performance of the cable material.
Preferably, the thermal stabilizer is a hydroxybenzoate.
Preferably, the drying agent is one of calcium sulfate and calcium chloride.
The invention also provides a preparation method of the anti-aging polypropylene cable material, which comprises the following steps:
S1, preprocessing base material polypropylene, and performing a glowing operation on the base material polypropylene by using a base material solvent, wherein the operation is performed in a reaction kettle;
S2, sequentially adding an antioxidant and an ultraviolet absorbent into a reaction kettle, and stirring and mixing with the melted base material;
s3, adding the nano particles into a water solvent, and performing ultrasonic dispersion to uniformly disperse the nano particles in the water solvent to obtain a mixed solution;
S4, adding the polyether TPU and the mixed solution obtained in the step S3 into a reaction kettle, and stirring and mixing;
S5, homogenizing the materials in the reaction kettle, wherein the stirring time is 15-30 min;
S6, simultaneously putting the uniformly mixed materials, the drying agent and the heat stabilizer in the reaction kettle in the step S5 into a mixing mill for mixing treatment, wherein the adding process is divided into three times, the weight parts of the three materials added each time are one third, the adding time interval is 1min, and the materials are kept for 6min at 140 ℃ after all the materials are added;
And S7, putting the material obtained by mixing in the step S6 into a double-screw extruder to extrude into a granular material, and obtaining the anti-aging polypropylene cable material.
Preferably, in step S1, the substrate flux is xylene and cyclohexane.
Preferably, in step S1, the temperature of the reaction kettle is 170 ℃.
Preferably, in step S1, the density of the base material polypropylene is 0.93-0.96g/cm 3. The polypropylene material used is PP-HM or PP-HMW model high molecular weight polypropylene produced by ExxonMobil, SABIC, BASF, braskem any company, the density of the selected polypropylene is used for limiting, the self structural characteristics of the cable material after final preparation and molding are ensured from the quality of the base material, the service strength and other structural characteristics of the cable material can be greatly improved, and the whole service functionality of the cable material is enriched.
Preferably, in step S2, the specific steps of adding the antioxidant and the ultraviolet absorbent into the reaction kettle in sequence and stirring and mixing the antioxidant and the ultraviolet absorbent with the melted base material are as follows:
S201, adding an antioxidant and an ultraviolet absorbent into a reaction kettle, stirring, standing for 2 minutes after stirring for ten minutes, detecting the absorptivity of materials in the reaction kettle by using an array ultraviolet irradiation lamp, wherein the irradiation intensity of the array ultraviolet irradiation lamp is (l 11,l12,...,l1n), n is the number of the ultraviolet irradiation lamps, l 1i is the irradiation intensity of the ith ultraviolet irradiation lamp, and simultaneously collecting the irradiation intensity (l 21,l22,...,l2n) of the ultraviolet reflected after the absorption of the materials, and l 2i is the irradiation intensity of the ith ultraviolet irradiation lamp reflected after the absorption of the materials;
s202, calculating the ultraviolet absorptivity of the ith ultraviolet irradiation lamp, Calculate the average value of the absorptivity/>Find the standard deviation/>, of the absorption rate at each locationAnd comparing the average value of the absorption rate with a set average threshold value, and simultaneously comparing the standard deviation value with a set standard deviation value threshold value, if the average value of the absorption rate is greater than or equal to the set average threshold value and the standard deviation value is less than or equal to the set standard deviation value threshold value, indicating that stirring and mixing are completed, and if the average value of the absorption rate is less than the set average threshold value and/or the standard deviation value is greater than the set standard deviation value threshold value, detecting after stirring for ten minutes again.
The invention also provides application of the anti-aging polypropylene cable material in production of anti-aging polypropylene cables.
The invention has the beneficial effects that:
1. According to the invention, the anti-aging agent is added into the polypropylene raw material, and different types of antioxidants are compounded according to a certain mass ratio in industry to form a stable ternary compound antioxidant system, so that the synergistic effect of the antioxidants of different classifications is exerted to the maximum level.
2. The nano particles are added in the preparation process, so that organic matters such as free radicals and hydroxyl groups can be absorbed to form a more effective barrier, the best heat resistance and ageing resistance are achieved under the condition of minimum investment, the stable and reliable operation of the polypropylene cable under the conditions of processing and manufacturing and long-term electric-thermal conditions is ensured, and the ageing resistance and the service life of the cable material are further improved.
3. According to the invention, the material obtained by uniformly mixing the base material, the antioxidant, the ultraviolet absorbent and the auxiliary material is added for three times in the mixing treatment, and the drying agent and the heat stabilizer are added at the same time, so that the polypropylene raw material can be kept at a certain drying degree in the mixing process and is more uniformly mixed with the anti-aging agent, the problems of layering, precipitation and the like between the additive and the polypropylene raw material are avoided, and the consistency and the quality stability of the cable material are greatly improved.
4. The cable material has excellent high temperature resistance through the addition of the ultraviolet absorber, can effectively prolong the service life of the cable, and has important application value and economic benefit.
5. According to the invention, through calculating the ultraviolet absorptivity and standard deviation value in the stirring process, whether stirring is completed is judged, so that the stirring effect and the detection speed are further improved, and the quality of the prepared cable material is improved.
Detailed Description
In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present invention is not limited to the specific embodiments disclosed below.
Example 1
An anti-aging polypropylene cable material comprises the following components in parts by weight: 40 parts of polypropylene; 2 parts of an antioxidant; 2 parts of ultraviolet absorber; 1 part of a heat stabilizer; 1 part of drying agent; 2 parts of nano particles and 20 parts of polyether TPU.
Wherein the antioxidant is a thioaniline photooxidation stabilizer Cyasorb UV-3346, hydroxyl dibutyl urea and an isodiphenyl benzotriazine siloxane light stabilizer, and the weight ratio of the three components in the antioxidant is 3:2:2.
The ultraviolet absorbent is ethyl 2- (4-benzoylmethoxy-2-ethoxyphenylamino) acetate. The ultraviolet absorber is used for improving the heat resistance of the cable material, can provide very good heat resistance for the cable material on the basis of not changing the original structural characteristics of the cable material, and enhances the comprehensive use performance of the cable material.
The heat stabilizer is hydroxybenzoate. The drying agent is calcium sulfate.
The invention also provides a preparation method of the anti-aging polypropylene cable material, which comprises the following steps:
s1, preprocessing base material polypropylene, wherein the density of the base material polypropylene is 0.93g/cm 3, and melting the base material polypropylene by using a base material flux, wherein the base material flux is xylene and cyclohexane, and the operation is performed in a reaction kettle, and the temperature of the reaction kettle is 170 ℃;
S2, sequentially adding an antioxidant and an ultraviolet absorbent into a reaction kettle, and stirring and mixing with the melted base material;
s3, adding the nano particles into a water solvent, and performing ultrasonic dispersion to uniformly disperse the nano particles in the water solvent to obtain a mixed solution;
S4, adding the polyether TPU and the mixed solution obtained in the step S3 into a reaction kettle, and stirring and mixing;
s5, homogenizing the materials in the reaction kettle, wherein the stirring time is 15min;
S6, simultaneously putting the uniformly mixed materials, the drying agent and the heat stabilizer in the reaction kettle in the step S5 into a mixing mill for mixing treatment, wherein the adding process is divided into three times, the weight parts of the three materials added each time are one third, the adding time interval is 1min, and the materials are kept for 6min at 140 ℃ after all the materials are added;
And S7, putting the material obtained by mixing in the step S6 into a double-screw extruder to extrude into a granular material, and obtaining the anti-aging polypropylene cable material. And then carrying out plastic treatment operations such as stretching and the like according to the cable size specification required to be produced and the prepared anti-aging polypropylene cable material.
In step S2, the specific steps of adding the antioxidant and the ultraviolet absorbent into the reaction kettle in sequence and stirring and mixing the antioxidant and the ultraviolet absorbent with the melted base material are as follows:
S201, adding an antioxidant and an ultraviolet absorbent into a reaction kettle, stirring, standing for 2 minutes after stirring for ten minutes, detecting the absorptivity of materials in the reaction kettle by using an array ultraviolet irradiation lamp, wherein the irradiation intensity of the array ultraviolet irradiation lamp is (l 11,l12,...,l1n), n is the number of the ultraviolet irradiation lamps, l 1i is the irradiation intensity of the ith ultraviolet irradiation lamp, and simultaneously collecting the irradiation intensity (l 21,l22,...,l2n) of the ultraviolet reflected after the absorption of the materials, and l 2i is the irradiation intensity of the ith ultraviolet irradiation lamp reflected after the absorption of the materials;
s202, calculating the ultraviolet absorptivity of the ith ultraviolet irradiation lamp, Calculate the average value of the absorptivity/>Find the standard deviation/>, of the absorption rate at each locationAnd comparing the average value of the absorption rate with a set average threshold value, and simultaneously comparing the standard deviation value with a set standard deviation value threshold value, if the average value of the absorption rate is greater than or equal to the set average threshold value and the standard deviation value is less than or equal to the set standard deviation value threshold value, indicating that stirring and mixing are completed, and if the average value of the absorption rate is less than the set average threshold value and/or the standard deviation value is greater than the set standard deviation value threshold value, detecting after stirring for ten minutes again.
The test results of each performance of the obtained polypropylene cable material are as follows: the tensile strength is 29.5Mpa, the elongation at break is 329%, the tensile strength change rate after aging at 135 ℃ for 168 hours is 4%, the elongation at break change rate is 2%, and various properties are greatly improved compared with the conventional cable materials in the existing market.
Example 2
An anti-aging polypropylene cable material comprises the following components in parts by weight: 50 parts of polypropylene; 3 parts of an antioxidant; 1 part of ultraviolet absorber; 2 parts of a heat stabilizer; 2 parts of drying agent; 3 parts of nano particles; 30 parts of polyether TPU.
Wherein the antioxidant is a thioaniline photooxidation stabilizer Cyasorb UV-3346, hydroxyl dibutyl urea and an isodiphenyl benzotriazine siloxane light stabilizer, and the weight ratio of the three components in the antioxidant is 3:2:2.
The ultraviolet absorbent is ethyl 2- (4-benzoylmethoxy-2-ethoxyphenylamino) acetate. The ultraviolet absorber is used for improving the heat resistance of the cable material, can provide very good heat resistance for the cable material on the basis of not changing the original structural characteristics of the cable material, and enhances the comprehensive use performance of the cable material.
The heat stabilizer is hydroxybenzoate. The drying agent is calcium sulfate.
The invention also provides a preparation method of the anti-aging polypropylene cable material, which comprises the following steps:
s1, preprocessing base material polypropylene, wherein the density of the base material polypropylene is 0.93g/cm 3, and melting the base material polypropylene by using a base material flux, wherein the base material flux is xylene and cyclohexane, and the operation is performed in a reaction kettle, and the temperature of the reaction kettle is 170 ℃;
S2, sequentially adding an antioxidant and an ultraviolet absorbent into a reaction kettle, and stirring and mixing with the melted base material;
s3, adding the nano particles into a water solvent, and performing ultrasonic dispersion to uniformly disperse the nano particles in the water solvent to obtain a mixed solution;
S4, adding the polyether TPU and the mixed solution obtained in the step S3 into a reaction kettle, and stirring and mixing;
s5, homogenizing the materials in the reaction kettle, wherein the stirring time is 15min;
S6, simultaneously putting the uniformly mixed materials, the drying agent and the heat stabilizer in the reaction kettle in the step S5 into a mixing mill for mixing treatment, wherein the adding process is divided into three times, the weight parts of the three materials added each time are one third, the adding time interval is 1min, and the materials are kept for 6min at 140 ℃ after all the materials are added;
And S7, putting the material obtained by mixing in the step S6 into a double-screw extruder to extrude into a granular material, and obtaining the anti-aging polypropylene cable material. And then carrying out plastic treatment operations such as stretching and the like according to the cable size specification required to be produced and the prepared anti-aging polypropylene cable material.
In step S2, the specific steps of adding the antioxidant and the ultraviolet absorbent into the reaction kettle in sequence and stirring and mixing the antioxidant and the ultraviolet absorbent with the melted base material are as follows:
S201, adding an antioxidant and an ultraviolet absorbent into a reaction kettle, stirring, standing for 2 minutes after stirring for ten minutes, detecting the absorptivity of materials in the reaction kettle by using an array ultraviolet irradiation lamp, wherein the irradiation intensity of the array ultraviolet irradiation lamp is (l 11,l12,...,l1n), n is the number of the ultraviolet irradiation lamps, l 1i is the irradiation intensity of the ith ultraviolet irradiation lamp, and simultaneously collecting the irradiation intensity (l 21,l22,...,l2n) of the ultraviolet reflected after the absorption of the materials, and l 2i is the irradiation intensity of the ith ultraviolet irradiation lamp reflected after the absorption of the materials;
s202, calculating the ultraviolet absorptivity of the ith ultraviolet irradiation lamp, Calculate the average value of the absorptivity/>Find the standard deviation/>, of the absorption rate at each locationAnd comparing the average value of the absorption rate with a set average threshold value, and simultaneously comparing the standard deviation value with a set standard deviation value threshold value, if the average value of the absorption rate is greater than or equal to the set average threshold value and the standard deviation value is less than or equal to the set standard deviation value threshold value, indicating that stirring and mixing are completed, and if the average value of the absorption rate is less than the set average threshold value and/or the standard deviation value is greater than the set standard deviation value threshold value, detecting after stirring for ten minutes again.
The test results of each performance of the obtained polypropylene cable material are as follows: the tensile strength is 32.74Mpa, the elongation at break is 336%, the tensile strength change rate after aging at 135 ℃ for 168 hours is 2%, the elongation at break change rate is 3%, and various properties are greatly improved compared with the conventional cable materials in the existing market.
Example 3
An anti-aging polypropylene cable material comprises the following components in parts by weight: 60 parts of polypropylene; 4 parts of an antioxidant; 1 part of ultraviolet absorber; 3 parts of a heat stabilizer; 3 parts of drying agent; 4 parts of nano particles; 40 parts of polyether TPU.
Wherein the antioxidant is a thioaniline photooxidation stabilizer Cyasorb UV-3346, hydroxyl dibutyl urea and an isodiphenyl benzotriazine siloxane light stabilizer, and the weight ratio of the three components in the antioxidant is 3:2:2.
The ultraviolet absorbent is ethyl 2- (4-benzoylmethoxy-2-ethoxyphenylamino) acetate. The ultraviolet absorber is used for improving the heat resistance of the cable material, can provide very good heat resistance for the cable material on the basis of not changing the original structural characteristics of the cable material, and enhances the comprehensive use performance of the cable material.
The heat stabilizer is hydroxybenzoate. The drying agent is calcium sulfate.
The invention also provides a preparation method of the anti-aging polypropylene cable material, which comprises the following steps:
s1, preprocessing base material polypropylene, wherein the density of the base material polypropylene is 0.93g/cm 3, and melting the base material polypropylene by using a base material flux, wherein the base material flux is xylene and cyclohexane, and the operation is performed in a reaction kettle, and the temperature of the reaction kettle is 170 ℃;
S2, sequentially adding an antioxidant and an ultraviolet absorbent into a reaction kettle, and stirring and mixing with the melted base material;
s3, adding the nano particles into a water solvent, and performing ultrasonic dispersion to uniformly disperse the nano particles in the water solvent to obtain a mixed solution;
S4, adding the polyether TPU and the mixed solution obtained in the step S3 into a reaction kettle, and stirring and mixing;
s5, homogenizing the materials in the reaction kettle, wherein the stirring time is 15min;
S6, simultaneously putting the uniformly mixed materials, the drying agent and the heat stabilizer in the reaction kettle in the step S5 into a mixing mill for mixing treatment, wherein the adding process is divided into three times, the weight parts of the three materials added each time are one third, the adding time interval is 1min, and the materials are kept for 6min at 140 ℃ after all the materials are added;
And S7, putting the material obtained by mixing in the step S6 into a double-screw extruder to extrude into a granular material, and obtaining the anti-aging polypropylene cable material. And then carrying out plastic treatment operations such as stretching and the like according to the cable size specification required to be produced and the prepared anti-aging polypropylene cable material.
In step S2, the specific steps of adding the antioxidant and the ultraviolet absorbent into the reaction kettle in sequence and stirring and mixing the antioxidant and the ultraviolet absorbent with the melted base material are as follows:
S201, adding an antioxidant and an ultraviolet absorbent into a reaction kettle, stirring, standing for 2 minutes after stirring for ten minutes, detecting the absorptivity of materials in the reaction kettle by using an array ultraviolet irradiation lamp, wherein the irradiation intensity of the array ultraviolet irradiation lamp is (l 11,l12,...,l1n), n is the number of the ultraviolet irradiation lamps, l 1i is the irradiation intensity of the ith ultraviolet irradiation lamp, and simultaneously collecting the irradiation intensity (l 21,l22,...,l2n) of the ultraviolet reflected after the absorption of the materials, and l 2i is the irradiation intensity of the ith ultraviolet irradiation lamp reflected after the absorption of the materials;
s202, calculating the ultraviolet absorptivity of the ith ultraviolet irradiation lamp, Calculate the average value of the absorptivity/>Find the standard deviation/>, of the absorption rate at each locationAnd comparing the average value of the absorption rate with a set average threshold value, and simultaneously comparing the standard deviation value with a set standard deviation value threshold value, if the average value of the absorption rate is greater than or equal to the set average threshold value and the standard deviation value is less than or equal to the set standard deviation value threshold value, indicating that stirring and mixing are completed, and if the average value of the absorption rate is less than the set average threshold value and/or the standard deviation value is greater than the set standard deviation value threshold value, detecting after stirring for ten minutes again.
The test results of each performance of the obtained polypropylene cable material are as follows: the tensile strength is 30.1Mpa, the elongation at break is 358%, the tensile strength change rate after aging at 135 ℃ for 168 hours is 4%, the elongation at break change rate is 5%, and various properties are greatly improved compared with the conventional cable materials in the existing market.
Comparative example 1
The difference from example 1 is that: in the preparation of the polypropylene cable material, each material was not added three times in the kneading step, and the other steps were exactly the same as in example 1.
The test results of each performance of the obtained polypropylene cable material are as follows: the tensile strength is 28.7Mpa, the elongation at break is 345%, the tensile strength change rate after aging at 135 ℃ for 168 hours is 6%, the elongation at break change rate is 6%, and various properties are lower than those of the examples.
Comparative example 2
The difference from example 1 is that: the polypropylene cable material was prepared by adding only one antioxidant, the thioaniline photo-oxygen stabilizer, and the other steps were exactly the same as in example 1.
The test results of each performance of the obtained polypropylene cable material are as follows: the tensile strength is 28.9Mpa, the elongation at break is 305%, the tensile strength change rate after aging at 135 ℃ for 168 hours is 10%, the elongation at break change rate is 11%, and various properties are lower than those of the examples.
Comparative example 3
The difference from example 1 is that: the polypropylene cable material was prepared without any antioxidant added, the other steps being exactly the same as in example 1.
The test results of each performance of the obtained polypropylene cable material are as follows: the tensile strength is 26.4Mpa, the elongation at break is 273%, the tensile strength change rate after aging at 135 ℃ for 168 hours is 19%, the elongation at break change rate is 13%, and various properties are lower than those of the examples.
Comparative example 4
The difference from example 1 is that: in step S2, the antioxidant and the ultraviolet absorber were sequentially added to the reaction vessel and stirred and mixed with the melted base material, and the ultraviolet absorptivity and the standard deviation were not calculated during the stirring, and the other steps were exactly the same as in example 1.
The test results of each performance of the obtained polypropylene cable material are as follows: the tensile strength is 29.1Mpa, the elongation at break is 314%, the tensile strength change rate after aging at 135 ℃ for 168 hours is 6%, the elongation at break change rate is 5%, and various properties are lower than those of the examples.
Comparative example 5
The difference from example 1 is that: no nanoparticles were added to prepare the polypropylene cable material, and the other steps were exactly the same as in example 1.
The test results of each performance of the obtained polypropylene cable material are as follows: the tensile strength is 28.4Mpa, the elongation at break is 296%, the tensile strength change rate after aging at 135 ℃ for 168 hours is 7%, the elongation at break change rate is 6%, and various properties are lower than those of the examples.
TABLE 1 Performance test results of Polypropylene cable materials obtained in examples 1-3 and comparative examples 1-4
The tensile property test standard adopts GB/T2972, and the ageing resistance test standard is GB/T11046.
As can be seen from the results in table 1, the performance indexes of the examples of the present invention are better than the industry standard and are obviously better than the comparative examples, in each comparative example, the mixed material, the drying agent and the stabilizer are not added in the mixing process in the comparative example 1, the material obtained after mixing is not uniform, and the performance is lower than that of the case of adding in the example 1 in the multiple steps; comparative example 2, in which only one antioxidant, the thioaniline photo-oxygen stabilizer, was added, exhibited lower performance than in the case of the ternary antioxidant complex system added in example 1; comparative example 3, without any antioxidant added, exhibited properties lower than those of the antioxidant added in example 1. Comparative example 4 in step S2, an antioxidant and an ultraviolet absorber were sequentially added to a reaction vessel and stirred and mixed with a base material after melting, and ultraviolet absorptivity and standard deviation values were not calculated during stirring, and the performance of the prepared cable material was slightly inferior to that of example 1. In comparative example 5, the prepared cable material had slightly inferior properties without addition of nanoparticles.
The technical scheme of the invention can effectively improve the performances of tensile strength, elongation at break, ageing resistance and the like of the polypropylene cable.
It should be noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present invention may be modified or substituted without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered in the scope of the claims of the present invention.
Claims (2)
1. An anti-aging polypropylene cable material is characterized in that: comprises the following components in parts by weight:
the antioxidant comprises a thioaniline photooxidation stabilizer, one of a phenylformamide photooxidation stabilizer and dibutyl hydroxyurea and an isodiphenyl benzotriazine siloxane light stabilizer, and the weight ratio of the three components in the antioxidant is 3:2:2, the nano particles are SiO2 and TiO2, the average particle size is 50nm, and the weight ratio of the SiO2 to the TiO2 is 1:1.5; the specific type of the thioaniline photooxidation stabilizer is Cyasorb UV-3346 or Tinuvin 880, and the specific type of the phenylformamide photooxidation stabilizer is Tinuvin 144 or Chimassorb 81; the ultraviolet absorbent is one of benzoyl methoxyl ethoxy aniline ultraviolet absorbent, diphenyl ketone ultraviolet absorbent and methyl carbamate ultraviolet absorbent; the specific type of the benzoyl methoxyethoxy anilines ultraviolet absorbent is ethyl 2- (4-benzoyl methoxyl-2-ethoxyphenylamino) acetate, the specific type of the benzophenone ultraviolet absorbent is 2-chlorophenyl benzophenone, and the specific type of the methyl carbamate ultraviolet absorbent is dihydroxybenzophenone methyl formate; the heat stabilizer is hydroxybenzoate; the drying agent is one of calcium sulfate and calcium chloride; the preparation method of the anti-aging polypropylene cable material comprises the following steps:
s1, preprocessing base material polypropylene, and melting the base material polypropylene by using a base material flux, wherein the melting is performed in a reaction kettle;
S2, sequentially adding an antioxidant and an ultraviolet absorbent into a reaction kettle, and stirring and mixing with the melted base material;
s3, adding the nano particles into a water solvent, and performing ultrasonic dispersion to uniformly disperse the nano particles in the water solvent to obtain a mixed solution;
S4, adding the polyether TPU and the mixed solution obtained in the step S3 into a reaction kettle, and stirring and mixing;
S5, homogenizing the materials in the reaction kettle, wherein the stirring time is 15-30 min;
S6, simultaneously putting the uniformly mixed materials, the drying agent and the heat stabilizer in the reaction kettle in the step S5 into a mixing mill for mixing treatment, wherein the adding process is divided into three times, the weight parts of the three materials added each time are one third, the adding time interval is 1min, and the materials are kept for 6min at 140 ℃ after all the materials are added;
S7, putting the materials obtained by mixing in the step S6 into a double-screw extruder to be extruded into granular materials, and obtaining the anti-aging polypropylene cable material; in the step S1, the substrate flux is xylene and cyclohexane; in the step S1, the temperature of the reaction kettle is 170 ℃; in the step S1, the density of the base material polypropylene is 0.93-0.96g/cm 3; in step S2, the specific steps of adding the antioxidant and the ultraviolet absorbent into the reaction kettle in sequence and stirring and mixing the mixture with the melted base material are as follows:
S201, adding an antioxidant and an ultraviolet absorbent into a reaction kettle, stirring, standing for 2 minutes after stirring for ten minutes, detecting the absorptivity of materials in the reaction kettle by using an array ultraviolet irradiation lamp, wherein the irradiation intensity of the array ultraviolet irradiation lamp is (l 11,l12,...,l1n), n is the number of the ultraviolet irradiation lamps, l 1i is the irradiation intensity of the ith ultraviolet irradiation lamp, and simultaneously collecting the irradiation intensity (l 21,l22,...,l2n) of the ultraviolet reflected after the absorption of the materials, and l 2i is the irradiation intensity of the ith ultraviolet irradiation lamp reflected after the absorption of the materials;
s202, calculating the ultraviolet absorptivity of the ith ultraviolet irradiation lamp, Calculating the average value of the absorptivityFind the standard deviation/>, of the absorption rate at each locationAnd comparing the average value of the absorption rate with a set average threshold value, and simultaneously comparing the standard deviation value with a set standard deviation value threshold value, if the average value of the absorption rate is greater than or equal to the set average threshold value and the standard deviation value is less than or equal to the set standard deviation value threshold value, indicating that stirring and mixing are completed, and if the average value of the absorption rate is less than the set average threshold value and/or the standard deviation value is greater than the set standard deviation value threshold value, detecting after stirring for ten minutes again.
2. Use of the anti-aging polypropylene cable material according to claim 1 in the production of anti-aging polypropylene cables.
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