CN117143413A - Wear-resistant cable material and preparation method thereof - Google Patents
Wear-resistant cable material and preparation method thereof Download PDFInfo
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- CN117143413A CN117143413A CN202311364198.7A CN202311364198A CN117143413A CN 117143413 A CN117143413 A CN 117143413A CN 202311364198 A CN202311364198 A CN 202311364198A CN 117143413 A CN117143413 A CN 117143413A
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- 239000000463 material Substances 0.000 title claims abstract description 56
- 238000002360 preparation method Methods 0.000 title abstract description 11
- 238000002156 mixing Methods 0.000 claims abstract description 19
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 18
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 18
- NKSJNEHGWDZZQF-UHFFFAOYSA-N ethenyl(trimethoxy)silane Chemical compound CO[Si](OC)(OC)C=C NKSJNEHGWDZZQF-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229920000092 linear low density polyethylene Polymers 0.000 claims abstract description 14
- 239000004707 linear low-density polyethylene Substances 0.000 claims abstract description 14
- 239000011256 inorganic filler Substances 0.000 claims abstract description 10
- 229910003475 inorganic filler Inorganic materials 0.000 claims abstract description 10
- 239000002270 dispersing agent Substances 0.000 claims abstract description 9
- 239000000314 lubricant Substances 0.000 claims abstract description 9
- 239000004014 plasticizer Substances 0.000 claims abstract description 9
- 241000208689 Eucommia ulmoides Species 0.000 claims abstract description 5
- 238000004132 cross linking Methods 0.000 claims description 18
- 239000000203 mixture Substances 0.000 claims description 18
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 17
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 17
- 239000002994 raw material Substances 0.000 claims description 14
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical group [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims description 12
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims description 12
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 9
- FBYUNLMTXMFAQK-UHFFFAOYSA-N butyl dodecanoate Chemical compound CCCCCCCCCCCC(=O)OCCCC.CCCCCCCCCCCC(=O)OCCCC FBYUNLMTXMFAQK-UHFFFAOYSA-N 0.000 claims description 9
- 239000004917 carbon fiber Substances 0.000 claims description 9
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical group C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 9
- 239000004808 2-ethylhexylester Substances 0.000 claims description 8
- KRADHMIOFJQKEZ-UHFFFAOYSA-N Tri-2-ethylhexyl trimellitate Chemical group CCCCC(CC)COC(=O)C1=CC=C(C(=O)OCC(CC)CCCC)C(C(=O)OCC(CC)CCCC)=C1 KRADHMIOFJQKEZ-UHFFFAOYSA-N 0.000 claims description 8
- JKIJEFPNVSHHEI-UHFFFAOYSA-N Phenol, 2,4-bis(1,1-dimethylethyl)-, phosphite (3:1) Chemical compound CC(C)(C)C1=CC(C(C)(C)C)=CC=C1OP(OC=1C(=CC(=CC=1)C(C)(C)C)C(C)(C)C)OC1=CC=C(C(C)(C)C)C=C1C(C)(C)C JKIJEFPNVSHHEI-UHFFFAOYSA-N 0.000 claims description 6
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 claims description 6
- 238000001125 extrusion Methods 0.000 claims description 6
- 238000005469 granulation Methods 0.000 claims description 5
- 230000003179 granulation Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 claims 1
- 150000002148 esters Chemical class 0.000 abstract 1
- 238000002844 melting Methods 0.000 abstract 1
- 230000008018 melting Effects 0.000 abstract 1
- -1 polyethylene Polymers 0.000 description 39
- 239000004698 Polyethylene Substances 0.000 description 27
- 229920000573 polyethylene Polymers 0.000 description 27
- 239000000899 Gutta-Percha Substances 0.000 description 20
- 240000000342 Palaquium gutta Species 0.000 description 20
- 229920000588 gutta-percha Polymers 0.000 description 20
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 18
- 238000005299 abrasion Methods 0.000 description 18
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 17
- 238000012360 testing method Methods 0.000 description 13
- 229910000019 calcium carbonate Inorganic materials 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 9
- 238000004898 kneading Methods 0.000 description 6
- 229920003020 cross-linked polyethylene Polymers 0.000 description 5
- 239000004703 cross-linked polyethylene Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 229920003023 plastic Polymers 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 3
- 238000010998 test method Methods 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 229920001903 high density polyethylene Polymers 0.000 description 2
- 239000004700 high-density polyethylene Substances 0.000 description 2
- 229920001684 low density polyethylene Polymers 0.000 description 2
- 239000004702 low-density polyethylene Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 229920000915 polyvinyl chloride Polymers 0.000 description 2
- 239000004800 polyvinyl chloride Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 1
- 229920010126 Linear Low Density Polyethylene (LLDPE) Polymers 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- 230000003064 anti-oxidating effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000001165 hydrophobic group Chemical group 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- 229920005992 thermoplastic resin Polymers 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
- 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
- C08L23/08—Copolymers of ethene
- C08L23/0807—Copolymers of ethene with unsaturated hydrocarbons only containing more than three carbon atoms
- C08L23/0815—Copolymers of ethene with aliphatic 1-olefins
-
- 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
- H01B3/28—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances natural or synthetic rubbers
-
- 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
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- 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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- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Organic Insulating Materials (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The application relates to the field of cable materials, and particularly discloses a wear-resistant cable material and a preparation method thereof. The wear-resistant cable material comprises 80-100 parts of LLDPE, 40-50 parts of eucommia ulmoides gum, 20-40 parts of plasticizer, 20-30 parts of inorganic filler, 2-4 parts of vinyl trimethoxy silane, 0.5-1 part of lubricant, 0.1-0.2 part of dispersing agent, 0.1-0.2 part of antioxidant and 0.02-0.15 part of dilaurate dibutyl ester; the preparation method comprises the following steps: and (5) melting, mixing, extruding and granulating. The wear-resistant cable material has extremely strong wear resistance and toughness.
Description
Technical Field
The application relates to the field of cable materials, in particular to a wear-resistant cable material and a preparation method thereof.
Background
The cable protective sleeve not only can prevent the cable line from being short-circuited and broken, but also can prevent the wire line from being damaged due to invasion of sundries such as moisture, dirt, dust and the like in the wire line. The cable protective sleeve can also prevent animals from biting the wire line and can prolong the service life of the wire line. The cable protective sleeve is made of cable materials through melt extrusion.
The cable material mainly comprises polyethylene and polyvinyl chloride, wherein the polyvinyl chloride cable material has low price and good physical and mechanical properties, but has great environmental protection problem.
Polyethylene is a crystalline thermoplastic plastic, which is one of the most widely used raw materials in modern plastics, and is mainly divided into three categories, namely High Density Polyethylene (HDPE), low Density Polyethylene (LDPE) and Linear Low Density Polyethylene (LLDPE).
All three types of polyethylene have good insulation, moisture resistance and seepage resistance, wherein LLDPE has more excellent properties such as melt processability, cold resistance, toughness, puncture resistance and the like, and is suitable for being used as a cable material, but the molecular structure of the polyethylene is linear, so that the abrasion resistance is slightly insufficient.
Disclosure of Invention
The application provides a wear-resistant cable material and a preparation method thereof in order to improve the wear resistance of a linear low-density polyethylene cable material.
In a first aspect, the application provides a wear-resistant cable material, which adopts the following technical scheme:
the wear-resistant cable material is prepared from the following raw materials in parts by weight:
80-100 parts of LLDPE;
40-50 parts of eucommia ulmoides gum;
20-40 parts of plasticizer;
20-30 parts of inorganic filler;
2-4 parts of vinyl trimethoxy silane;
0.5-1 part of lubricant;
0.1-0.2 part of dispersing agent;
0.1-0.2 part of antioxidant;
0.02-0.15 part of dilaurate.
By adopting the technical scheme, the crosslinked polyethylene has a three-dimensional network structure, and the wear resistance of the crosslinked polyethylene can be enhanced along with the improvement of the crosslinking degree. Gutta-percha has excellent wear resistance and toughness, and has excellent blending compatibility with polyethylene. The addition of the plasticizer ensures that the polyethylene cable material has good plasticity and plays a great role in the later cooling and shaping. The addition of the inorganic filler results in a strong mechanical bond between the molecules. The addition of lubricants can improve processability. The dispersant can make the inorganic filler dispersed better. The antioxidant can be added to play an anti-aging role.
Preferably, the inorganic filler is carbon fiber.
By adopting the technical scheme, the carbon fiber forms firm mechanical combination between macromolecules, and the carbon fiber can improve the structural integrity of the thermoplastic plastic and improve the wear resistance. The carbon fiber can improve the thermal conductivity and thermal deformation of the polyethylene by providing reinforcement, and can obviously improve the bearing capacity and wear resistance of the polyethylene cable material.
Preferably, 15-20 parts by weight of PTFE are also added.
By adopting the technical scheme, PTFE is a polymer polymerized by tetrafluoroethylene monomers, has no hydrogen bond in a PTFE molecular structure, is symmetrical in structure, has better wear resistance and toughness, and is added with PTFE to ensure that the polyethylene cable material has good wear resistance and toughness.
Preferably, 4-6 parts by weight of EVA is also added.
By adopting the technical scheme, EVA is a thermoplastic resin with rubber elasticity, and has good toughness, flexibility, stress cracking resistance, cohesiveness and the like. Because the EVA has low glass transition temperature and low viscosity, after the EVA and LLDPE are blended, the EVA forms a second phase with proper morphology along with the increase of the EVA, so the EVA has strong toughening effect on the polyethylene, and the capability of the polyethylene for bearing external force and solvent to crack is enhanced. In addition, the polyethylene is nonpolar, the polytetrafluoroethylene selected by the application is polar, and the compatibility of the polyethylene and the polytetrafluoroethylene is improved by adding EVA.
Preferably, the lubricant is white oil.
By adopting the technical scheme, the white oil serves as a lubricant to improve the processing performance.
Preferably, the dispersant is sodium dodecyl benzene sulfonate.
By adopting the technical scheme, the sodium dodecyl benzene sulfonate is one of the surfactant dispersants, and because the sodium dodecyl benzene sulfonate is a substance with a chemical structure containing hydrophilic and hydrophobic groups, the sodium dodecyl benzene sulfonate can enable particles to form colloid particles in liquid, has excellent dispersibility, and can enable inorganic fillers to be dispersed by adding the sodium dodecyl benzene sulfonate.
Preferably, the antioxidant comprises antioxidant 1010 and antioxidant 168 in a mass ratio of 1:1.
By adopting the technical scheme, 1010 is a hindered phenol antioxidant, is generally used as a primary antioxidant, mainly aims at preventing the aging of a high polymer material by capturing free radicals, and has good compatibility with polyethylene. 168 is a phosphite antioxidant, generally used as a secondary antioxidant, to prevent aging of the material, mainly by decomposing the hydroperoxide. In the application, the antioxidant 1010 and the antioxidant 168 are compounded according to the mass ratio of 1:1, so that the antioxidation effect is exerted to the greatest extent.
Preferably, the plasticizer is TOTM.
By adopting the technical scheme, the plasticizer weakens acting force among polymer molecular chains, so that the mobility among polymer molecular chains is increased, and meanwhile, other molecules with different structural types are introduced among polymer molecules, so that the regularity of the molecules is reduced, and the purpose of plasticization is achieved. The plasticized polyethylene cable material has good toughness.
In a second aspect, the application provides a preparation method of a wear-resistant cable material, which adopts the following technical scheme:
the preparation method of the wear-resistant cable material comprises the following steps:
s1, melt mixing: adding 2-4 parts of vinyl trimethoxy silane and 0.02-0.15 part of dibutyl dilaurate into 80-100 parts of LLDPE for crosslinking, controlling the crosslinking temperature to be 130-140 ℃, controlling the crosslinking time to be 4-6 hours, adding 40-50 parts of eucommia ulmoides gum, 20-40 parts of plasticizer, 25-30 parts of inorganic filler, 0.5-1 part of lubricant, 0.1-0.2 part of dispersing agent and 0.1-0.2 part of antioxidant, mixing at a high speed at a rotating speed of 800-1000r/min, controlling the temperature to be 170-180 ℃ and controlling the time to be 5-10 minutes, and obtaining the mixture through melt mixing.
S2, extrusion granulation: extruding and granulating the shaped mixture obtained in the step S1 to obtain the wear-resistant cable material.
By adopting the technical scheme, the required raw materials are determined, the required raw material amount is determined through batching and metering, the prepared raw materials are added into a reaction machine, the reaction time, the temperature and other instrument parameters are set, the raw materials are melted and mixed, in the step, firstly, the polyethylene is crosslinked to obtain a mixture, the main component of the mixture is crosslinked polyethylene, the molecular structure of the crosslinked polyethylene is changed, the mechanical property of the polyethylene is improved, the processing of the next step is facilitated, other raw materials are added into the mixture to obtain the required mixture, all properties of the mixture are improved, and the mixture is extruded and granulated to obtain the wear-resistant cable material.
In summary, the application has the following beneficial effects:
1. according to the application, vinyl trimethoxy silane is used as a crosslinking agent, and dibutyl dilaurate is used as a crosslinking catalyst, so that polyethylene is crosslinked, and the molecular structure of the crosslinked polyethylene is changed, so that the mechanical properties are greatly improved, and excellent wear resistance and toughness are obtained.
2. The application adopts the polyethylene blending after the gutta percha crosslinking to form the blend with excellent performance, and the blend has high stretching stress and hardness and excellent wear resistance and flex crack resistance, thereby improving the wear resistance and toughness of the polyethylene cable material.
3. The gutta percha and EVA added in the application greatly improve the compatibility of polytetrafluoroethylene and polyethylene, so that the wear resistance and toughness of the polyethylene cable material are improved.
Detailed Description
The application is further described in detail below with reference to the following examples, which are specifically described: the following examples, in which no specific conditions are noted, are conducted under conventional conditions or conditions recommended by the manufacturer, and the raw materials used in the following examples are commercially available from ordinary sources except for the specific descriptions.
The embodiment of the application adopts the following raw materials:
polyethylene, brand M2720A, flourishing market source leaf plastic products limited; gutta-percha with the brand MF-00163, shaanxi Muyu Biotech Co., ltd; EVA, trade name V5110J, ningbo Chensike plasticization Co., ltd; the diameter of the carbon fiber is 5 μm.
Example 1:
the wear-resistant cable material is prepared from the following raw materials in mass:
LLDPE 16kg；
gutta-percha 8kg;
TOTM 4kg；
4kg of calcium carbonate;
0.4kg of vinyltrimethoxysilane;
0.1kg of white oil;
0.02kg of sodium dodecyl benzene sulfonate;
1010.01 kg of antioxidant;
168.01 kg of an antioxidant;
0.01kg of dibutyl dilaurate.
The preparation method of the wear-resistant cable material comprises the following steps:
s1, melt mixing: adding 0.4kg of vinyl trimethoxy silane and 0.01kg of dibutyl dilaurate into 16kg of LLDPE for crosslinking, controlling the crosslinking temperature at 130 ℃, controlling the crosslinking time at 4 hours, adding 8kg of gutta-percha, 4kg of TOTM, 4kg of calcium carbonate, 0.1kg of white oil, 0.02kg of sodium dodecyl benzene sulfonate, 0.01kg of antioxidant 1010 and 0.01kg of antioxidant 168, mixing at a high speed at a rotating speed of 800r/min, controlling the temperature at 170 ℃ and controlling the time at 5 minutes, and obtaining the mixture through melt mixing.
S2, extrusion granulation: extruding and granulating the shaped mixture obtained in the step S1 to obtain the wear-resistant cable material.
Example 2:
the wear-resistant cable material is prepared from the following raw materials in mass:
LLDPE 18kg；
9kg of gutta-percha;
TOTM 6kg；
5kg of calcium carbonate;
0.6kg of vinyltrimethoxysilane;
0.15kg of white oil;
0.03kg of sodium dodecyl benzene sulfonate;
1010.015 kg of antioxidant;
168.015 kg of antioxidant;
0.02kg of dibutyl dilaurate.
The preparation method of the wear-resistant cable material comprises the following steps:
s1, melt mixing: adding 0.6kg of vinyl trimethoxy silane and 0.02kg of dibutyl dilaurate into 18kg of LLDPE for crosslinking, controlling the crosslinking temperature to be 135 ℃, controlling the crosslinking time to be 5 hours, adding 9kg of gutta-percha, 6kg of TOTM, 5kg of calcium carbonate, 0.15kg of white oil, 0.03kg of sodium dodecyl benzene sulfonate, 0.015kg of antioxidant 1010 and 0.015kg of antioxidant 168, mixing at a high speed at a rotating speed of 900r/min, controlling the temperature to be 175 ℃ and controlling the time to be 8 minutes, and obtaining the mixture through melt mixing.
S2, extrusion granulation: extruding and granulating the shaped mixture obtained in the step S1 to obtain the wear-resistant cable material.
Example 3:
the wear-resistant cable material is prepared from the following raw materials in mass:
LLDPE 20kg；
10kg of gutta-percha;
TOTM 8kg；
6kg of calcium carbonate;
0.8kg of vinyltrimethoxysilane;
0.2kg of white oil;
0.04kg of sodium dodecyl benzene sulfonate;
1010.02 kg of antioxidant;
antioxidant 168.02 kg;
0.03kg of dibutyl dilaurate.
The preparation method of the wear-resistant cable material comprises the following steps:
s1, melt mixing: adding 0.8kg of vinyl trimethoxy silane and 0.03kg of dibutyl dilaurate into 20kg of LLDPE for crosslinking, controlling the crosslinking temperature at 140 ℃, controlling the crosslinking time at 6 hours, adding 10kg of gutta-percha, 8kg of TOTM, 6kg of calcium carbonate, 0.2kg of white oil, 0.04kg of sodium dodecyl benzene sulfonate, 0.02kg of antioxidant 1010 and 0.02kg of antioxidant 168, mixing at a high speed at a rotating speed of 1000r/min, controlling the temperature at 180 ℃ and controlling the time at 10min, and obtaining the mixture through melt mixing.
S2, extrusion granulation: extruding and granulating the shaped mixture obtained in the step S1 to obtain the wear-resistant cable material.
Example 4:
the difference from example 2 is that the equivalent mass of calcium carbonate is replaced by carbon fiber.
Example 5:
the difference from example 4 is that 3kg of polytetrafluoroethylene was further added and added together with gutta percha in the melt-kneading of S1.
Example 6:
the difference from example 4 is that 4kg of polytetrafluoroethylene was further added and added together with gutta percha in the melt-kneading of S1.
Example 7:
the difference from example 5 is that 0.8kg EVA was added together with gutta percha during S1 melt-kneading.
Example 8:
the difference from example 5 is that 1kg EVA was added together with gutta percha in the melt-kneading of S1.
Example 9:
the difference from example 5 is that 1.2kg EVA was added together with gutta percha during S1 melt-kneading.
Comparative example 1:
the difference from example 2 is that the raw material does not include gutta-percha.
Comparative example 2:
the difference from comparative example 1 is that 3kg of polytetrafluoroethylene was further added, and the polytetrafluoroethylene was added together with calcium carbonate during the melt-kneading in S1.
Comparative example 3:
the difference from example 2 is that vinyltrimethoxysilane and dibutylester dilaurate were not added.
Performance test
The cable materials of examples 1 to 9 and comparative examples 1 to 3 were subjected to abrasion resistance test according to the test method described in GB/T3960-2016 "Plastic sliding Friction abrasion test method", and the test index was abrasion quality. The smaller the abrasion mass, the better the abrasion resistance; the greater the wear mass, the poorer the wear resistance and the test results are shown in table 1.
Determination of tensile Properties of plastics according to GB/T1040.1-2018 first part: the cable materials of examples 1 to 9 and comparative examples 1 to 3 were subjected to toughness testing by the test method described in general rule, the test indexes are breaking strength and breaking elongation, and the test results are shown in table 1.
TABLE 1 Performance test results record Table
Test results illustrate:
1. the test results of the examples 1-4 are combined, the quality of the calcium carbonate and the like is replaced by carbon fiber, the abrasion quality of the cable material is obviously reduced, and the abrasion resistance is obviously improved. This is because the carbon fiber itself has high strength and also has a reinforcing effect.
2. The abrasion quality was decreased by adding an appropriate amount of polytetrafluoroethylene in combination with the test results of examples 4 to 6. This is because polytetrafluoroethylene itself has an extremely low coefficient of friction and, when blended with carbon fibers, can exert its own advantages.
3. The test results of examples 5 and examples 7 to 9 are combined, and it is found that the wear quality of the cable material is reduced, the wear resistance is improved, the breaking strength and the breaking elongation are increased, and the toughness is improved after a proper amount of EVA is added. This is because EVA improves the compatibility of polyethylene and polytetrafluoroethylene, and EVA has a strong toughening effect on polyethylene.
4. As is clear from the test results of example 8 and comparative example 1, the abrasion quality is drastically improved, the breaking strength and the breaking elongation are greatly reduced, and the abrasion resistance and the toughness of the cable material are reduced without adding gutta percha. This is because gutta percha has excellent wear resistance and toughness, and has excellent blending compatibility with polyethylene.
5. According to the test results of the comparative examples 1 and 2, polytetrafluoroethylene is added without gutta percha, the abrasion quality is slightly reduced, the breaking strength and the breaking elongation are slightly increased, and the abrasion resistance and the toughness of the cable material are improved. This is because polytetrafluoroethylene alone has an effect of improving the abrasion resistance of the cable material, but has a small effect.
6. As is clear from the test results of example 2 and comparative example 3, when no vinyltrimethoxysilane or dibutylene dilaurate was added to the cable material, the abrasion quality increased, the breaking strength and the breaking elongation increased, and the toughness and abrasion resistance of the cable material were greatly reduced. This is because polyethylene cannot be crosslinked without adding vinyltrimethoxysilane and dibutylester dilaurate, and abrasion resistance is deteriorated and toughness is improved, but gutta percha, EVA and the like are added therein, which can improve the abrasion resistance and toughness of the cable material.
The present embodiment is only for explanation of the present application and is not to be construed as limiting the present application, and modifications to the present embodiment, which may not creatively contribute to the present application as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present application.
Claims (9)
1. The wear-resistant cable material is characterized by being prepared from the following raw materials in parts by weight:
80-100 parts of LLDPE;
40-50 parts of eucommia ulmoides gum;
20-40 parts of plasticizer;
20-30 parts of inorganic filler;
2-4 parts of vinyl trimethoxy silane;
0.5-1 part of lubricant;
0.1-0.2 part of dispersing agent;
0.1-0.2 part of antioxidant;
0.02-0.15 part of dilaurate.
2. The wear resistant cable material according to claim 1, wherein: the inorganic filler is carbon fiber.
3. The wear resistant cable material according to claim 2, wherein: 15-20 parts of PTFE are also added according to parts by weight.
4. A wear resistant cable material according to claim 3, wherein: 4-6 parts of EVA is also added according to the parts by weight.
5. The wear resistant cable material according to claim 1, wherein: the lubricant is white oil.
6. The wear resistant cable material according to claim 1, wherein: the dispersing agent is sodium dodecyl benzene sulfonate.
7. The wear resistant cable material according to claim 1, wherein: the antioxidant comprises an antioxidant 1010 and an antioxidant 168 in a mass ratio of 1:1.
8. The wear resistant cable material according to claim 1, wherein: the plasticizer is TOTM.
9. A method of preparing the wear resistant cable material of any one of claims 1-8, comprising the steps of:
s1, melt mixing: adding 2-4 parts of vinyl trimethoxy silane and 0.02-0.15 part of dibutyl dilaurate into 80-100 parts of LLDPE by weight for crosslinking, controlling the crosslinking temperature to be 130-140 ℃, controlling the crosslinking time to be 4-6 hours, adding 40-50 parts of eucommia ulmoides gum, 20-40 parts of plasticizer, 25-30 parts of inorganic filler, 0.5-1 part of lubricant, 0.1-0.2 part of dispersing agent and 0.1-0.2 part of antioxidant, mixing at a high speed at a rotating speed of 800-1000r/min, controlling the temperature to be 170-180 ℃, controlling the time to be 5-10 minutes, and obtaining a mixture through melt mixing;
s2, extrusion granulation: extruding and granulating the shaped mixture obtained in the step S1 to obtain the wear-resistant cable material.
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| CN202311364198.7A CN117143413A (en) | 2023-10-20 | 2023-10-20 | Wear-resistant cable material and preparation method thereof |
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