CN114156004B - Acid and alkali resistant anti-interference shielding computer cable - Google Patents

Acid and alkali resistant anti-interference shielding computer cable Download PDF

Info

Publication number
CN114156004B
CN114156004B CN202111398970.8A CN202111398970A CN114156004B CN 114156004 B CN114156004 B CN 114156004B CN 202111398970 A CN202111398970 A CN 202111398970A CN 114156004 B CN114156004 B CN 114156004B
Authority
CN
China
Prior art keywords
parts
barium sulfate
polyethylene
acid
reaction container
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202111398970.8A
Other languages
Chinese (zh)
Other versions
CN114156004A (en
Inventor
王子祥
吴松如
郑有松
李福春
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Anhui Electric Group Shares Co ltd
Original Assignee
Anhui Electric Group Shares Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Anhui Electric Group Shares Co ltd filed Critical Anhui Electric Group Shares Co ltd
Priority to CN202111398970.8A priority Critical patent/CN114156004B/en
Publication of CN114156004A publication Critical patent/CN114156004A/en
Application granted granted Critical
Publication of CN114156004B publication Critical patent/CN114156004B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
    • H01B7/2806—Protection against damage caused by corrosion
    • 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
    • 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
    • C08K3/32—Phosphorus-containing compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/05—Alcohols; Metal alcoholates
    • C08K5/053—Polyhydroxylic alcohols
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
    • C08K5/098—Metal salts of carboxylic acids
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/55—Boron-containing compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K9/00—Use of pretreated ingredients
    • C08K9/10—Encapsulated ingredients
    • 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
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B11/00—Communication cables or conductors
    • H01B11/02—Cables with twisted pairs or quads
    • H01B11/06—Cables with twisted pairs or quads with means for reducing effects of electromagnetic or electrostatic disturbances, e.g. screens
    • H01B11/10—Screens specially adapted for reducing interference from external sources
    • H01B11/1033—Screens specially adapted for reducing interference from external sources composed of a wire-braided conductor
    • 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
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/02—Disposition of insulation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
    • H01B7/22—Metal wires or tapes, e.g. made of steel
    • H01B7/228—Metal braid
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/29—Protection against damage caused by extremes of temperature or by flame
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/29—Protection against damage caused by extremes of temperature or by flame
    • H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00—Power cables
    • H01B9/02—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients
    • H01B9/024—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients composed of braided metal wire
    • 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
    • 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
    • C08K3/32—Phosphorus-containing compounds
    • C08K2003/321—Phosphates
    • C08K2003/322—Ammonium phosphate
    • C08K2003/323—Ammonium polyphosphate
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/02—Flame or fire retardant/resistant
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2207/00—Properties characterising the ingredient of the composition
    • C08L2207/06—Properties of polyethylene
    • C08L2207/062—HDPE
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Electromagnetism (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Organic Insulating Materials (AREA)

Abstract

The invention discloses an acid and alkali resistant anti-interference shielding computer cable, which relates to the technical field of computer cables and comprises a cable core, an insulating layer, a shielding layer and an outer sheath layer, wherein the insulating layer is wrapped outside the cable core; the outer sheath layer is prepared from the following raw materials in parts by weight: 35-45 parts of linear low-density polyethylene, 50-60 parts of high-density polyethylene, 5-10 parts of EVA (ethylene vinyl acetate), 20-30 parts of polyethylene modified barium sulfate, 1-3 parts of ammonium polyphosphate, 1-3 parts of melamine borate, 1-3 parts of pentaerythritol, 3-5 parts of magnesium stearate, 0.5-1 part of DCP (DCP), 0.5-1 part of TAIC (ethylene-propylene-diene monomer), 0.5-1 part of antioxidant and 0.2-0.6 part of maleic anhydride grafted polyethylene. The cable sheath material prepared by the invention has excellent performance, good tensile strength and elongation at break, good environmental stress cracking resistance, oil resistance, heat resistance, acid and alkali resistance and other properties, and has good safety use performance in petrochemical industry and steel industry.

Description

Acid and alkali resistant anti-interference shielding computer cable
Technical Field
The invention relates to the technical field of computer cables, in particular to an acid and alkali resistant anti-interference shielding computer cable.
Background
The computer cable belongs to the cable for electrical equipment, and is suitable for electronic computers and automatic instruments with high requirements on interference resistance under the rated voltage of 500V. The computer cable belongs to the cable for the electrical equipment, the structure and the composition materials of the cable for the electrical equipment are the most complex, the composition materials of each structure of the computer cable are various according to the special requirements of the use temperature and the working environment, and the outer sheath layer of the cable can be made of polyethylene, polyvinyl chloride, crosslinked polyethylene, fluoroplastic and other materials.
In the production environments of steel, petroleum, chemical industry and other types, a large amount of acid and alkali corrosive gas or liquid exists, so that the cable laid in a cable trench is damaged, the acid and alkali resistance of the outer jacket of the existing computer cable is poor, and the consequences on the used computer cable are serious.
Disclosure of Invention
Based on the technical problems in the background technology, the invention provides an acid-base-resistant anti-interference shielding computer cable.
The invention provides an acid-base resistant anti-interference shielding computer cable, which comprises a cable core, an insulating layer, a shielding layer and an outer sheath layer, wherein the insulating layer is wrapped outside the cable core;
the outer sheath layer is prepared from the following raw materials in parts by weight: 35-45 parts of linear low-density polyethylene, 50-60 parts of high-density polyethylene, 5-10 parts of EVA (ethylene vinyl acetate), 20-30 parts of polyethylene modified barium sulfate, 1-3 parts of ammonium polyphosphate, 1-3 parts of melamine borate, 1-3 parts of pentaerythritol, 3-5 parts of magnesium stearate, 0.5-1 part of DCP (DCP), 0.5-1 part of TAIC (ethylene-propylene-diene monomer), 0.5-1 part of antioxidant and 0.2-0.6 part of maleic anhydride grafted polyethylene.
Preferably, the preparation of the polyethylene modified barium sulfate is as follows:
s1, dissolving barium sulfate in deionized water, heating to 70-80 ℃, stirring, adding 12-hydroxystearic acid, stirring, then dropwise adding barium sulfate solution to complete reaction, filtering, washing with hot ethanol solution and deionized water, and drying to obtain stearic acid modified barium sulfate particles;
s2, vacuumizing a reaction container, replacing the reaction container with nitrogen for 3 times, adding stearic acid modified barium sulfate particles, methylaluminoxane and toluene into the reaction container, reacting for 2-4 hours at 60-70 ℃, filtering, and washing with toluene to obtain methylaluminoxane modified barium sulfate;
s3, vacuumizing a reaction container, replacing the reaction container with nitrogen for 3 times, adding methylaluminoxane modified barium sulfate and a metallocene compound into the reaction container, reacting for 2-4 hours at 60-70 ℃, filtering, and washing with toluene to obtain barium sulfate loaded with a metallocene catalyst;
and S4, vacuumizing a reaction container, replacing the reaction container with nitrogen for 3 times, adding toluene, adding barium sulfate and methylaluminoxane loaded with a metallocene catalyst into the reaction container, introducing ethylene gas, reacting for 2-4 hours at 60-70 ℃, terminating the reaction with acidified ethanol, and drying to obtain the polyethylene modified barium sulfate.
Preferably, the mass ratio of the barium sulfate to the 12-hydroxystearic acid is 100:7-15.
Preferably, in S2 and S3, the mass ratio of the stearic acid modified barium sulfate particles, the methylaluminoxane and the metallocene compound is 100:100-120:5-10.
Preferably, the metallocene compound is Cp 2 ZrCl 2 。
Preferably, in S4, the mass percentage of polyethylene in the polyethylene modified barium sulfate is controlled to be 30-40% by adjusting the flow rate of ethylene gas.
Preferably, the antioxidant is one or more of antioxidant 168, antioxidant 1010 and antioxidant 1076.
Preferably, the insulating layer is made of crosslinked polyethylene or polyethylene.
Preferably, the shielding layer adopts copper wires to weave split screens, and a double-sided plastic-coated aluminum-plastic composite belt is provided with a tinned drainage wire main screen.
The beneficial effects are that: the invention provides an acid and alkali resistant anti-interference shielding computer cable, wherein an insulating layer of the cable adopts crosslinked polyethylene or polyethylene, and the cable has excellent heat resistance, low temperature resistance and electrical insulation performance; the shielding adopts copper wire to weave split screens, the double-sided plastic-coated aluminum-plastic composite tape is added with a tinned drainage wire total screen, the shielding has the characteristics of low capacitance and low inductance, the anti-interference performance is improved, the aluminum-plastic composite layer can effectively control signal interference, and meanwhile, the corrosion resistance of the cable is ensured; the polyethylene with good mechanical property, heat resistance and insulativity is adopted as a matrix material in the outer sheath material, the proportion of the linear low-density polyethylene, the high-density polyethylene and the EVA is reasonably proportioned, the environmental stress cracking resistance, the mechanical strength, the toughness and the like of the material are comprehensively improved, the polyethylene modified barium sulfate is added as a filler, the dispersibility is good, small physical crosslinking points are formed in the matrix, polyethylene polymer chains are tightly combined together, the mechanical property and the acid and alkali resistance of the material are improved, the aging speed of the cable is delayed, and the service life of the cable is prolonged.
In the preparation of polyethylene modified barium sulfate, firstly, hydroxystearic acid is added in the process of preparing barium sulfate by a precipitation method, and the hydroxystearic acid is embedded into particles in the formation process of barium sulfate crystals, so that hydroxyl and carboxyl are introduced into the surfaces of barium sulfate particles, and then the barium sulfate particles react with methylaluminoxane and a metallocene compound, so that a metallocene catalyst is successfully loaded on the surfaces of the barium sulfate particles; the barium sulfate particles are used as a catalyst to catalyze ethylene to polymerize on the surface of the barium sulfate particles in situ, so that a small amount of ethylene polymer is coated on the surface of the barium sulfate to obtain polyethylene modified barium sulfate; the binding force of the filler dispersed on the polyethylene matrix and the surface of the matrix is good, and the mechanical property and the acid and alkali resistance of the material can be improved; the added barium sulfate is coated, so that the effect of the added barium sulfate and ammonium polyphosphate in the N-P intumescent flame retardant can be effectively reduced, the flame retardant efficiency of the flame retardant is improved, and the synergistic effect of the ammonium polyphosphate, melamine borate and pentaerythritol is adopted, so that the flame retardant effect is good; furthermore, the effect of the addition of high filler content on the processing flowability of the material is ameliorated by the addition of magnesium stearate.
The cable sheath material prepared by the invention has excellent performance, good tensile strength and elongation at break, good environmental stress cracking resistance, oil resistance, heat resistance, acid and alkali resistance and other properties, and has good safety use performance in petrochemical industry and steel industry.
Detailed Description
The technical scheme of the invention is described in detail through specific embodiments.
Example 1
The preparation of the polyethylene modified barium sulfate is as follows:
s1, dissolving barium sulfate in deionized water, heating to 70 ℃, stirring, adding 12-hydroxystearic acid, stirring, then dropwise adding barium sulfate solution to complete reaction, filtering, washing with hot ethanol solution and deionized water, and drying to obtain stearic acid modified barium sulfate particles; wherein the mass ratio of the barium sulfate to the 12-hydroxystearic acid is 100:7, preparing a base material;
s2, vacuumizing a reaction container, replacing the reaction container with nitrogen for 3 times, adding stearic acid modified barium sulfate particles, methylaluminoxane and toluene into the reaction container, reacting for 4 hours at 60 ℃, filtering, and washing with toluene to obtain methylaluminoxane modified barium sulfate;
s3, vacuumizing a reaction container, replacing the reaction container with nitrogen for 3 times, and then modifying barium sulfate and metallocene compound Cp with methylaluminoxane 2 ZrCl 2 Adding the mixture into a reaction vessel, reacting for 4 hours at 60 ℃, filtering, and washing with toluene to obtain barium sulfate loaded with a metallocene catalyst; wherein, the mass ratio of the stearic acid modified barium sulfate particles to the methylaluminoxane to the metallocene compound is 100:100:5, a step of;
s4, vacuumizing a reaction container, replacing the reaction container with nitrogen for 3 times, adding toluene, adding barium sulfate and methylaluminoxane loaded with a metallocene catalyst into the reaction container, introducing ethylene gas, reacting for 4 hours at 60 ℃, terminating the reaction with acidified ethanol, and drying to obtain polyethylene modified barium sulfate; the mass percentage of polyethylene in the polyethylene modified barium sulfate is controlled to be 30% by adjusting the flow rate of ethylene gas.
Example 2
The preparation of the polyethylene modified barium sulfate is as follows:
s1, dissolving barium sulfate in deionized water, heating to 75 ℃, stirring, adding 12-hydroxystearic acid, stirring, then dropwise adding barium sulfate solution to complete reaction, filtering, washing with hot ethanol solution and deionized water, and drying to obtain stearic acid modified barium sulfate particles; wherein the mass ratio of the barium sulfate to the 12-hydroxystearic acid is 100:10;
s2, vacuumizing a reaction container, replacing the reaction container with nitrogen for 3 times, adding stearic acid modified barium sulfate particles, methylaluminoxane and toluene into the reaction container, reacting for 3 hours at 65 ℃, filtering, and washing with toluene to obtain methylaluminoxane modified barium sulfate;
s3, vacuumizing a reaction container, replacing the reaction container with nitrogen for 3 times, and then modifying barium sulfate and metallocene compound Cp with methylaluminoxane 2 ZrCl 2 Adding the mixture into a reaction vessel, reacting for 3 hours at 65 ℃, filtering, and washing with toluene to obtain barium sulfate loaded with a metallocene catalyst; wherein, the mass ratio of the stearic acid modified barium sulfate particles to the methylaluminoxane to the metallocene compound is 100:110:8, 8;
s4, vacuumizing a reaction container, replacing the reaction container with nitrogen for 3 times, adding toluene, adding barium sulfate and methylaluminoxane loaded with a metallocene catalyst into the reaction container, introducing ethylene gas, reacting for 3 hours at 65 ℃, terminating the reaction with acidified ethanol, and drying to obtain polyethylene modified barium sulfate; the mass percentage of polyethylene in the polyethylene modified barium sulfate is controlled to be 35% by adjusting the flow rate of ethylene gas.
Example 3
The preparation of the polyethylene modified barium sulfate is as follows:
s1, dissolving barium sulfate in deionized water, heating to 80 ℃, stirring, adding 12-hydroxystearic acid, stirring, then dropwise adding barium sulfate solution to complete reaction, filtering, washing with hot ethanol solution and deionized water, and drying to obtain stearic acid modified barium sulfate particles; wherein the mass ratio of the barium sulfate to the 12-hydroxystearic acid is 100:15;
s2, vacuumizing a reaction container, replacing the reaction container with nitrogen for 3 times, adding stearic acid modified barium sulfate particles, methylaluminoxane and toluene into the reaction container, reacting for 2 hours at 70 ℃, filtering, and washing with toluene to obtain methylaluminoxane modified barium sulfate;
s3, vacuumizing a reaction container, replacing the reaction container with nitrogen for 3 times, and then modifying barium sulfate and metallocene compound Cp with methylaluminoxane 2 ZrCl 2 Adding the mixture into a reaction vessel, reacting for 2 hours at 70 ℃, filtering, and washing with toluene to obtain barium sulfate loaded with a metallocene catalyst; wherein, the mass ratio of the stearic acid modified barium sulfate particles to the methylaluminoxane to the metallocene compound is 100:120:10;
s4, vacuumizing a reaction container, replacing the reaction container with nitrogen for 3 times, adding toluene, adding barium sulfate and methylaluminoxane loaded with a metallocene catalyst into the reaction container, introducing ethylene gas, reacting for 2 hours at 70 ℃, terminating the reaction with acidified ethanol, and drying to obtain polyethylene modified barium sulfate; the mass percentage of polyethylene in the polyethylene modified barium sulfate is controlled to be 40% by adjusting the flow rate of ethylene gas.
Example 4
The invention provides an acid-base resistant anti-interference shielding computer cable, which comprises a cable core, an insulating layer, a shielding layer and an outer sheath layer, wherein the insulating layer is wrapped outside the cable core;
wherein, the insulating layer adopts crosslinked polyethylene or polyethylene; the shielding layer adopts copper wires to weave a split screen, and a double-sided plastic-coated aluminum-plastic composite belt is provided with a tinned drainage wire main screen;
the outer sheath layer is prepared from the following raw materials in parts by weight: 35 parts of linear low-density polyethylene, 60 parts of high-density polyethylene, 5 parts of EVA, 20 parts of polyethylene modified barium sulfate prepared in example 1, 1 part of ammonium polyphosphate, 3 parts of melamine borate, 2 parts of pentaerythritol, 3 parts of magnesium stearate, 0.5 part of DCP, 0.5 part of TAIC, 0.8 part of antioxidant and 0.3 part of maleic anhydride grafted polyethylene; wherein the antioxidant is antioxidant 168, antioxidant 1010, antioxidant 1076 according to 1:1:1 mass ratio; the preparation of the outer sheath layer is obtained by blending the raw materials and carrying out melt extrusion.
Example 5
The invention provides an acid-base resistant anti-interference shielding computer cable, which comprises a cable core, an insulating layer, a shielding layer and an outer sheath layer, wherein the insulating layer is wrapped outside the cable core;
wherein, the insulating layer adopts crosslinked polyethylene or polyethylene; the shielding layer adopts copper wires to weave a split screen, and a double-sided plastic-coated aluminum-plastic composite belt is provided with a tinned drainage wire main screen;
the outer sheath layer is prepared from the following raw materials in parts by weight: 40 parts of linear low-density polyethylene, 55 parts of high-density polyethylene, 5 parts of EVA, 25 parts of polyethylene modified barium sulfate prepared in example 1, 2 parts of ammonium polyphosphate, 1 part of melamine borate, 3 parts of pentaerythritol, 4 parts of magnesium stearate, 0.8 part of DCP, 0.8 part of TAIC, 0.8 part of antioxidant and 0.4 part of maleic anhydride grafted polyethylene; wherein the antioxidant is antioxidant 168, antioxidant 1010, antioxidant 1076 according to 1:1:1 mass ratio; the preparation of the outer sheath layer is obtained by blending the raw materials and carrying out melt extrusion.
Example 6
The invention provides an acid-base resistant anti-interference shielding computer cable, which comprises a cable core, an insulating layer, a shielding layer and an outer sheath layer, wherein the insulating layer is wrapped outside the cable core;
wherein, the insulating layer adopts crosslinked polyethylene or polyethylene; the shielding layer adopts copper wires to weave a split screen, and a double-sided plastic-coated aluminum-plastic composite belt is provided with a tinned drainage wire main screen;
the outer sheath layer is prepared from the following raw materials in parts by weight: 45 parts of linear low-density polyethylene, 50 parts of high-density polyethylene, 5 parts of EVA (ethylene vinyl acetate), 25 parts of polyethylene modified barium sulfate prepared in example 1, 3 parts of ammonium polyphosphate, 2 parts of melamine borate, 1 part of pentaerythritol, 5 parts of magnesium stearate, 1 part of DCP, 1 part of TAIC (polyethylene glycol terephthalate), 0.8 part of antioxidant and 0.6 part of maleic anhydride grafted polyethylene; wherein the antioxidant is antioxidant 168, antioxidant 1010, antioxidant 1076 according to 1:1:1 mass ratio; the preparation of the outer sheath layer is obtained by blending the raw materials and carrying out melt extrusion.
Example 7
The invention provides an acid-base resistant anti-interference shielding computer cable, which comprises a cable core, an insulating layer, a shielding layer and an outer sheath layer, wherein the insulating layer is wrapped outside the cable core;
wherein, the insulating layer adopts crosslinked polyethylene or polyethylene; the shielding layer adopts copper wires to weave a split screen, and a double-sided plastic-coated aluminum-plastic composite belt is provided with a tinned drainage wire main screen;
the outer sheath layer is prepared from the following raw materials in parts by weight: 40 parts of linear low-density polyethylene, 50 parts of high-density polyethylene, 10 parts of EVA, 30 parts of polyethylene modified barium sulfate prepared in example 2, 2 parts of ammonium polyphosphate, 2 parts of melamine borate, 2 parts of pentaerythritol, 5 parts of magnesium stearate, 0.8 part of DCP, 0.8 part of TAIC, 0.8 part of antioxidant and 0.4 part of maleic anhydride grafted polyethylene; wherein the antioxidant is antioxidant 1010 and antioxidant 1076 according to the following 2:1 mass ratio; the preparation of the outer sheath layer is obtained by blending the raw materials and carrying out melt extrusion.
Comparative example
Compared to example 4, the only difference is that: unmodified barium sulfate was used instead of polypropylene modified barium sulfate in example 1.
The outer jacket materials of the computer cables prepared in examples 4 to 7 and comparative examples of the present invention were subjected to performance test.
The testing method comprises the following steps:
mechanical properties were tested according to GB 15065-1994;
acid resistance: placing the sheath material into a corrosion-resistant test box with the temperature of 25 ℃ and the humidity of 95%, and soaking for 7d by adopting 98% sulfuric acid;
alkali resistance: placing the sheath material into a corrosion-resistant test box with the temperature of 25 ℃ and the humidity of 95%, and soaking for 7d by adopting 30% sodium hydroxide;
oil resistance: placing the sheath material into a corrosion-resistant test box with the temperature of 100 ℃, and soaking the sheath material in 20# engine oil for 3d;
the oxygen index was tested according to GB 2406-2008.
The test results are shown in Table 1.
Table 1 performance parameters of the outer jacket layers prepared in examples 4-7 and comparative example
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.

Claims (7)

1. The acid and alkali resistant anti-interference shielding computer cable is characterized by comprising a cable core, an insulating layer, a shielding layer and an outer sheath layer, wherein the insulating layer is wrapped outside the cable core;
the outer sheath layer is prepared from the following raw materials in parts by weight: 35-45 parts of linear low-density polyethylene, 50-60 parts of high-density polyethylene, 5-10 parts of EVA (ethylene vinyl acetate), 20-30 parts of polyethylene modified barium sulfate, 1-3 parts of ammonium polyphosphate, 1-3 parts of melamine borate, 1-3 parts of pentaerythritol, 3-5 parts of magnesium stearate, 0.5-1 part of DCP (DCP), 0.5-1 part of TAIC (ethylene glycol terephthalate), 0.5-1 part of antioxidant and 0.2-0.6 part of maleic anhydride grafted polyethylene;
the preparation method of the polyethylene modified barium sulfate comprises the following steps:
s1, dissolving barium sulfate in deionized water, heating to 70-80 ℃, stirring, adding 12-hydroxystearic acid, stirring, then dropwise adding barium sulfate solution to complete reaction, filtering, washing with hot ethanol solution and deionized water, and drying to obtain stearic acid modified barium sulfate particles;
s2, vacuumizing a reaction container, replacing the reaction container with nitrogen for 3 times, adding stearic acid modified barium sulfate particles, methylaluminoxane and toluene into the reaction container, reacting for 2-4 hours at 60-70 ℃, filtering, and washing with toluene to obtain methylaluminoxane modified barium sulfate;
s3, vacuumizing a reaction container, replacing the reaction container with nitrogen for 3 times, adding methylaluminoxane modified barium sulfate and a metallocene compound into the reaction container, reacting for 2-4 hours at 60-70 ℃, filtering, and washing with toluene to obtain barium sulfate loaded with a metallocene catalyst;
s4, vacuumizing a reaction container, replacing the reaction container with nitrogen for 3 times, adding toluene, adding barium sulfate and methylaluminoxane loaded with a metallocene catalyst into the reaction container, introducing ethylene gas, reacting for 2-4 hours at 60-70 ℃, terminating the reaction with acidified ethanol, and drying to obtain polyethylene modified barium sulfate;
the metallocene compound is Cp 2 ZrCl 2 。
2. The acid-base-resistant anti-interference shielding computer cable according to claim 1, wherein the mass ratio of the barium sulfate to the 12-hydroxystearic acid is 100:7-15.
3. The acid-base-resistant anti-interference shielding computer cable according to claim 1, wherein in the S2 and the S3, the mass ratio of the stearic acid modified barium sulfate particles, the methylaluminoxane and the metallocene compound is 100:100-120:5-10.
4. The acid-base-resistant anti-interference shielding computer cable according to claim 1, wherein in the S4, the mass percentage of polyethylene in the polyethylene modified barium sulfate is controlled to be 30-40% by adjusting the flow rate of ethylene gas.
5. The acid-base-resistant anti-interference shielded computer cable of claim 1, wherein the antioxidant is one or more of antioxidant 168, antioxidant 1010, antioxidant 1076.
6. The acid-base-resistant anti-interference shielded computer cable according to claim 1, wherein the insulating layer is made of crosslinked polyethylene or polyethylene.
7. The acid-base-resistant anti-interference shielding computer cable according to claim 1, wherein the shielding layer is a copper wire braided split screen, and the double-sided plastic-aluminum-coated composite tape is a tinned drainage wire total screen.
CN202111398970.8A 2021-11-19 2021-11-19 Acid and alkali resistant anti-interference shielding computer cable Active CN114156004B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111398970.8A CN114156004B (en) 2021-11-19 2021-11-19 Acid and alkali resistant anti-interference shielding computer cable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111398970.8A CN114156004B (en) 2021-11-19 2021-11-19 Acid and alkali resistant anti-interference shielding computer cable

Publications (2)

Publication Number Publication Date
CN114156004A CN114156004A (en) 2022-03-08
CN114156004B true CN114156004B (en) 2024-02-09

Family

ID=80457411

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202111398970.8A Active CN114156004B (en) 2021-11-19 2021-11-19 Acid and alkali resistant anti-interference shielding computer cable

Country Status (1)

Country Link
CN (1) CN114156004B (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103467881A (en) * 2013-08-26 2013-12-25 晶锋集团股份有限公司 High-toughness and high-shock-resistance polyvinyl chloride cable material and preparation method thereof
CN104356479A (en) * 2014-11-05 2015-02-18 安徽恒晶电缆集团有限公司 High-strength and high-fire-resistance modified polyethylene cable material
CN108299715A (en) * 2018-01-12 2018-07-20 江苏鑫丰塑业有限公司 A kind of heat resistanceheat resistant contraction one-step method silanes crosslinked cable material

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103467881A (en) * 2013-08-26 2013-12-25 晶锋集团股份有限公司 High-toughness and high-shock-resistance polyvinyl chloride cable material and preparation method thereof
CN104356479A (en) * 2014-11-05 2015-02-18 安徽恒晶电缆集团有限公司 High-strength and high-fire-resistance modified polyethylene cable material
CN108299715A (en) * 2018-01-12 2018-07-20 江苏鑫丰塑业有限公司 A kind of heat resistanceheat resistant contraction one-step method silanes crosslinked cable material

Also Published As

Publication number Publication date
CN114156004A (en) 2022-03-08

Similar Documents

Publication Publication Date Title
KR100947169B1 (en) Halogen-free flame retardant composition for cable and cable using the same
WO2006094250A1 (en) Plenum cable-flame retardant layer/component with exlellent aging properties
CN105111571A (en) Phosphorus-free based halogen-free flame-retardant insulated electric wire and phosphorus-free based halogen-free flame-retardant cable
CN107892771B (en) Cold-resistant low-smoke halogen-free flame-retardant cable material and preparation method thereof
CN103739928A (en) High-performance low smoke zero halogen power cable sheath material adopting silicon resin to enhance efficiency and preparation method thereof
KR20070087896A (en) Composition for production improved flame retardant insulating and sheath material of halogen free type, insulating materials and insulatin cable using the same
CN114188085A (en) Multi-core flexible mineral insulation fireproof cable and preparation method thereof
KR20130088466A (en) Insulation composition for high flame-retardant and low emitting smoke, separators using the same and cable having the seperators
CN114156004B (en) Acid and alkali resistant anti-interference shielding computer cable
CN115785555B (en) Aluminum alloy conductor crosslinked polyethylene insulation flame-retardant cable
CN115678156B (en) Photovoltaic cable and production process thereof
CN114171251B (en) Power cable with chemical corrosion resistance
CN111303528A (en) Halogen-free low-smoke high-flame-retardant high-oxygen-insulation cable material for power cable and preparation method thereof
CN112375282A (en) High-temperature-resistant high-elasticity anti-cracking low-smoke halogen-free optical cable sheath material for armor and preparation method thereof
CN104078140A (en) Halogen- and phosphorus-free flame-retardant insulated wire and halogen- and phosphorus-free flame-retardant insulated cable
CN111875873B (en) Insulating sheath material for internal connecting cable of electrical equipment and preparation method thereof
CN115746446A (en) CPR-grade silane crosslinking flame-retardant polyolefin cable material for photovoltaic cable and preparation method thereof
CN108623883A (en) A kind of refractory polyethylene track CABLE MATERIALS and preparation method thereof
KR100515642B1 (en) A cable having oil resistance and flame retardant
CN116515197B (en) Insulating cable sheath material for high-voltage cable and preparation method thereof
CN111875869A (en) Low-smoke halogen-free flame-retardant polyolefin cable material based on silane copolymer, preparation method thereof and cable
CN1673266A (en) Low-smoke no-halogen fireproof cable material
CN115938661B (en) Low-smoke halogen-free power cable and preparation process thereof
CN117050415A (en) High-temperature-resistant halogen-free flame-retardant automobile cable material and preparation method thereof
CN115678150B (en) High-performance flame-retardant polyethylene sheath material and preparation method thereof

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant