CN117903482A - Wear-resistant shell for cable and processing technology thereof - Google Patents

Wear-resistant shell for cable and processing technology thereof Download PDF

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Publication number
CN117903482A
CN117903482A CN202410109479.6A CN202410109479A CN117903482A CN 117903482 A CN117903482 A CN 117903482A CN 202410109479 A CN202410109479 A CN 202410109479A CN 117903482 A CN117903482 A CN 117903482A
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parts
wear
deionized water
sheath
mixing
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王时佳
张丽荣
张明良
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Zhejiang Lizhou Cable Co ltd
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Zhejiang Lizhou Cable Co ltd
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/04—Coating
    • C08J7/046—Forming abrasion-resistant coatings; Forming surface-hardening coatings
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/04—Coating
    • C08J7/0427—Coating with only one layer of a composition containing a polymer binder
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/12—Chemical modification
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/12—Chemical modification
    • C08J7/123—Treatment by wave energy or particle radiation
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
    • C09D175/04—Polyurethanes
    • C09D175/14—Polyurethanes having carbon-to-carbon unsaturated bonds
    • C09D175/16—Polyurethanes having carbon-to-carbon unsaturated bonds having terminal carbon-to-carbon unsaturated bonds
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/61—Additives non-macromolecular inorganic
    • C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/65—Additives macromolecular
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2327/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
    • C08J2327/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
    • C08J2327/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
    • C08J2327/06—Homopolymers or copolymers of vinyl chloride
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2475/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
    • C08J2475/04—Polyurethanes
    • C08J2475/14—Polyurethanes having carbon-to-carbon unsaturated bonds
    • C08J2475/16—Polyurethanes having carbon-to-carbon unsaturated bonds having terminal carbon-to-carbon unsaturated bonds
    • 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
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    • C08K2003/3009—Sulfides

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Abstract

The invention discloses a wear-resistant shell for cables and a processing technology thereof, wherein after the sheath is subjected to corona treatment, the sheath is subjected to surface treatment by KH570, is coated with graphite paint and is cured by ultraviolet irradiation, so that the wear-resistant sheath is prepared, and the wear-resistant sheath comprises the following raw materials in parts by weight: 80-100 parts of modified resin liquid, 20-30 parts of modified filler, 1-1.5 parts of photoinitiator, 0.2-0.5 part of flatting agent and 0.1-0.2 part of defoamer, wherein the surface of the modified filler can participate in the crosslinking of modified resin molecules so as to enable the molecules to form an interweaved three-dimensional grid, the wear resistance of the graphite coating is improved, the modified filler is of a structure with cage-type silsesquioxane and metal organic frameworks mutually coated, the structure is of a layered structure and is easy to shear, the better lubricating performance is achieved, and the surface molybdenum disulfide can reduce the surface stress of a precursor, so that the wear resistance effect is improved.

Description

Wear-resistant shell for cable and processing technology thereof
Technical Field
The invention relates to the technical field of cable housing preparation, in particular to a wear-resistant housing for a cable and a processing technology thereof.
Background
The cable is a carrier for transmitting electric signals and currents, the power supply stability of the cable directly determines the operation safety of the equipment, and meanwhile, along with the development of electric power energy, the application of the electric equipment is more and more popular, and the performance requirement on the cable is higher and higher; for example, in the automobile industry, refrigeration industry and the like, cables are directly connected with an engine, and the equipment is often accompanied with vibration and high-temperature working conditions in the running process, so that hidden danger of abrasion of a cable protection layer exists; at present, the cable applied to the working condition mainly comprises a composite structure, mainly comprises a conductive wire core, a wear-resistant layer and an insulating protective layer, wherein the conductive wire core is used for conveying current, the wear-resistant layer is used for preventing the surface layer from being worn out to cause open circuit, the insulating protective layer is used for ensuring the safety of power transmission, and the cable is sheathed with a wear-resistant shell to ensure the normal work of the cable.
Disclosure of Invention
The invention aims to provide a wear-resistant shell for a cable and a processing technology thereof, which solve the problems that the wear-resistant effect of the cable at the present stage is poor and wear-resistant components on the surface fall off after long-time use.
The aim of the invention can be achieved by the following technical scheme:
the processing technology for the wear-resistant shell of the cable specifically comprises the following steps:
The sheath is subjected to corona treatment under the condition that the high-frequency alternating voltage is 5000-15000V/m 2, then is soaked in ethanol, KH570 and deionized water are added, ultrasonic treatment is carried out for 10-15min under the condition that the frequency is 20-30kHz, then the sheath is taken out, dried and coated with graphite paint, and the abrasion-resistant sheath is prepared by irradiation of 365nm ultraviolet light for 20-30 min.
The volume ratio of KH570, ethanol and deionized water is 1:15:20, and the amount of diphenyl ketone is 0.2-0.5% of the mass of octavinyl silsesquioxane.
Further, the sheath is made by the following steps:
Weighing the following raw materials in parts by weight: 45-55 parts of PVC resin powder, 30-35 parts of nano calcium, 10-20 parts of dioctyl ester, 10-15 parts of paraffin, 3-8 parts of wear-resistant powder, 1-3 parts of carbon black, 1-3 parts of stabilizer, 0.3-0.5 part of PE wax and 0.2-0.5 part of stearic acid, extruding and granulating the raw materials at 170-185 ℃, and uniformly extruding and wrapping the raw materials on the surface of a cable body through an extruding machine to obtain the sheath.
Further, the graphite coating is prepared by the following steps:
Step A1: mixing polytetrahydrofuran and isophorone diisocyanate, reacting for 3-5 hours at the rotation speed of 150-200r/min and the temperature of 90-95 ℃, adding dihydroxymethylpropanoic acid, reacting for 2-3 hours, adding hydroxyethyl acrylate, reacting for 1-1.5 hours, adding deionized water, cooling to 35-40 ℃, adding triethylamine, and reacting for 30-40 minutes to obtain modified resin liquid;
Step A2: weighing the following raw materials in parts by weight: 80-100 parts of modified resin liquid, 20-30 parts of modified filler, 1-1.5 parts of photoinitiator, 0.2-0.5 part of flatting agent and 0.1-0.2 part of defoamer, and uniformly mixing the raw materials to prepare the graphite coating.
Further, the dosage ratio of polytetrahydrofuran, isophorone diisocyanate, dihydroxymethylpropionic acid, hydroxyethyl acrylate, deionized water and triethylamine in step A1 is 20mmol:35mmol:1mmol:9mmol:60mL:1.5mmol.
Further, the modified filler is prepared by the following steps:
Step B1: uniformly mixing p-hydroxybenzaldehyde, epoxy chloropropane, benzyl triethyl ammonium chloride and DMF (dimethyl formamide), reacting for 3-4 hours at the rotating speed of 200-300r/min and the temperature of 100-105 ℃ under the protection of nitrogen, cooling to 70-75 ℃, adding sodium hydroxide solution, continuously reacting for 15-20 hours to obtain an intermediate 1, uniformly mixing KH550, KH570, hydrochloric acid solution and methanol, stirring and adding deionized water at the rotating speed of 150-200r/min and the temperature of 20-25 ℃ to react for 3-5 days to obtain the functionalized silsesquioxane;
Step B2: uniformly mixing the intermediate 1, the functionalized silsesquioxane and the DMF, reacting for 6-8 hours at the rotating speed of 120-150r/min and the temperature of 40-50 ℃ and the pH value of 11-12 to obtain an intermediate 2, uniformly mixing the intermediate 2, o-phenylenediamine, potassium carbonate and the DMF, reacting for 10-15 hours at the rotating speed of 150-200r/min and the temperature of 80-85 ℃ to obtain an intermediate 3;
Step B3: mixing the intermediate 3, copper nitrate and DMF, reacting for 20-25h at the rotation speed of 120-150r/min and the temperature of 120-125 ℃, filtering to remove filtrate, drying to obtain a precursor, uniformly mixing ammonium molybdate tetrahydrate, thiourea, the precursor and deionized water, and performing hydrothermal reaction for 10-15h at the pressure of 10-15MPa and the temperature of 210-220 ℃ to obtain the modified filler.
Further, the dosage ratio of the p-hydroxybenzaldehyde, the epichlorohydrin to the sodium hydroxide to the epichlorohydrin to the sodium hydroxide solution in the step B1 is 40mmol:80mmol:10mL, the mass fraction of the sodium hydroxide solution is 30%, the dosage of the benzyl triethyl ammonium chloride is 1-3% of the sum of the mass of the p-hydroxybenzaldehyde and the epichlorohydrin, the dosage ratio of KH550, KH570 to deionized water is 600mmol:225mmol:72mL:30mL, and the concentration of the hydrochloric acid solution is 1.2mol/L.
Further, the molar ratio of the intermediate 1 to the functionalized silsesquioxane in the step B2 is 12:1, and the dosage ratio of the intermediate 2, the o-phenylenediamine and the potassium carbonate is 1mmol to 12mmol to 1g.
Further, the molar ratio of intermediate 3 to copper nitrate in step B3 was 1.25:1, and the dosage ratio of ammonium molybdate tetrahydrate, thiourea, precursor and deionized water was 80mg:160mg:40mg:35mL.
The invention has the beneficial effects that: the invention discloses a wear-resistant shell for cables, which is characterized in that after a sheath is subjected to corona treatment, a KH570 surface treatment is used for coating graphite paint, ultraviolet irradiation is used for curing, the wear-resistant sheath is prepared, high-frequency high-voltage is used for carrying out corona discharge on the treated sheath surface, low-temperature plasma is generated, the surface wettability of plastic is improved, si-OH bonds generated by the hydrolysis of KH570 are grafted with surface hydroxyl groups, double bonds are grafted on the surface, in the process of curing the graphite paint, the surface of the sheath contains active double bonds which can participate in the curing of the graphite paint, the adhesiveness of the graphite paint is further improved, the graphite paint reacts with polyurethane prepolymer by polytetrahydrofuran and isophorone diisocyanate, dihydroxymethylpropanoic acid is used for chain extension, finally hydroxyethyl acrylate is used for preparing modified resin liquid, and the modified resin liquid, modified filler, photoinitiator, leveling agent and defoamer are blended to obtain the graphite paint, the modified filler takes p-hydroxybenzaldehyde and epichlorohydrin as raw materials to react phenolic hydroxyl on the p-hydroxybenzaldehyde and epoxy on the epichlorohydrin, then forms a new epoxy group by ring closure under alkaline conditions to prepare an intermediate 1, forms a cage-type silsesquioxane structure containing amino and double bonds by hydrolytic polycondensation of KH550 and KH570 to prepare functional silsesquioxane, reacts the intermediate 1 and the functional silsesquioxane under alkaline conditions to react the epoxy group on the intermediate 1 with the amino group on the functional silsesquioxane to prepare an intermediate 2, reacts the intermediate 2 with o-phenylenediamine to react the aldehyde group on the intermediate 2 with the o-phenylenediamine to form an imidazole structure to prepare an intermediate 3, reacts the intermediate 3 with copper nitrate to form a metal organic frame, the precursor is prepared, ammonium molybdate tetrahydrate and thiourea react, molybdenum disulfide is loaded on the precursor to prepare modified filler, the surface of the modified filler can participate in modified resin molecular crosslinking, molecules form interweaved three-dimensional grids, the wear resistance of the graphite coating is improved, the modified filler is of a structure formed by mutually cladding cage-type silsesquioxane and a metal organic framework, the modified filler has better lubricating performance due to the fact that the modified filler is of a layered structure and is easy to shear, the surface stress of the precursor can be reduced by the molybdenum disulfide on the surface, the modified filler can enter narrower grooves after bending, a layer of compact and uniform lubricating film is formed under the action of external repeated stress to reduce friction and abrasion, and the wear resistance effect is improved.
Detailed Description
The following description of the technical solutions in the embodiments of the present invention will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
The processing technology for the wear-resistant shell of the cable specifically comprises the following steps:
The sheath is subjected to corona treatment under the condition that the high-frequency alternating voltage is 5000V/m 2, then is soaked in ethanol, KH570 and deionized water are added, ultrasonic treatment is carried out for 10min under the condition that the frequency is 20kHz, then the sheath is taken out, dried and coated with graphite paint, and the abrasion-resistant sheath is prepared by irradiation of 365nm ultraviolet light for 20 min.
The volume ratio of KH570, ethanol and deionized water is 1:15:20, and the amount of diphenyl ketone is 0.2% of the mass of octavinyl silsesquioxane.
The sheath is made by the following steps:
Weighing the following raw materials in parts by weight: 45 parts of PVC resin powder, 30 parts of nano calcium, 10 parts of dioctyl ester, 10 parts of paraffin, 3 parts of wear-resistant powder, 1 part of carbon black, 1 part of stabilizer, 0.3 part of PE wax and 0.2 part of stearic acid, extruding and granulating the raw materials at 170 ℃, and uniformly extruding and wrapping the raw materials on the surface of a cable body through an extruder to obtain the sheath.
The PVC resin powder is SG-5, the PE wax is DP0020F, the wear-resistant powder is polytetrafluoroethylene F-114, and the stabilizer is 8366.
The graphite coating is prepared by the following steps:
Step A1: mixing polytetrahydrofuran and isophorone diisocyanate, reacting for 3 hours at the rotation speed of 150r/min and the temperature of 90 ℃, adding dihydroxymethylpropanoic acid, reacting for 2 hours, adding hydroxyethyl acrylate, reacting for 1 hour, adding deionized water, cooling to 35 ℃, adding triethylamine, and reacting for 30 minutes to obtain modified resin liquid;
Step A2: weighing the following raw materials in parts by weight: 80 parts of modified resin liquid, 20 parts of modified filler, 1 part of photoinitiator, 0.2 part of flatting agent and 0.1 part of defoamer, and uniformly mixing the raw materials to prepare the graphite coating.
The dosage ratio of the polytetrahydrofuran, isophorone diisocyanate, dihydroxymethylpropanoic acid, hydroxyethyl acrylate, deionized water and triethylamine in the step A1 is 20mmol:35mmol:1mmol:9mmol:60mL:1.5mmol, and the molecular weight of the polytetrahydrofuran is 2000.
The photoinitiator in the step A2 is a photoinitiator 184, the leveling agent is BYK333, and the defoaming agent is DAPRO DF and 7073.
The modified filler is prepared by the following steps:
Step B1: uniformly mixing p-hydroxybenzaldehyde, epichlorohydrin, benzyl triethyl ammonium chloride and DMF (dimethyl formamide), reacting for 3 hours under the condition of the rotating speed of 200r/min, the temperature of 100 ℃ and the protection of nitrogen, cooling to 70 ℃, adding sodium hydroxide solution, continuously reacting for 15 hours to obtain an intermediate 1, uniformly mixing KH550, KH570, hydrochloric acid solution and methanol, stirring and adding deionized water under the condition of the rotating speed of 150r/min and the temperature of 20 ℃, and reacting for 3 days to obtain the functionalized silsesquioxane;
Step B2: uniformly mixing the intermediate 1, the functionalized silsesquioxane and the DMF, reacting for 6 hours at the rotation speed of 120r/min and the temperature of 40 ℃ and the pH value of 11 to obtain an intermediate 2, uniformly mixing the intermediate 2, the o-phenylenediamine, the potassium carbonate and the DMF, reacting for 10 hours at the rotation speed of 150r/min and the temperature of 80 ℃ to obtain an intermediate 3, and regulating the pH value to 5;
Step B3: mixing the intermediate 3, copper nitrate and DMF, reacting for 20 hours at the rotation speed of 120r/min and the temperature of 120 ℃, filtering to remove filtrate, drying to obtain a precursor, uniformly mixing ammonium molybdate tetrahydrate, thiourea, the precursor and deionized water, and performing hydrothermal reaction for 10 hours at the pressure of 10MPa and the temperature of 210 ℃ to obtain the modified filler.
The dosage ratio of the p-hydroxybenzaldehyde, the epichlorohydrin to the sodium hydroxide to the epichlorohydrin to the sodium hydroxide solution is 40mmol:80mmol:10mL, the mass fraction of the sodium hydroxide solution is 30%, the dosage of the benzyl triethyl ammonium chloride is 1% of the sum of the mass of the p-hydroxybenzaldehyde and the epichlorohydrin, the dosage ratio of KH550, KH570 to deionized water is 600mmol:225mmol:72mL:30mL, and the concentration of the hydrochloric acid solution is 1.2mol/L.
The molar ratio of the intermediate 1 to the functionalized silsesquioxane in the step B2 is 12:1, and the dosage ratio of the intermediate 2 to the o-phenylenediamine to the potassium carbonate is 1mmol to 12mmol to 1g.
The molar ratio of the intermediate 3 to the copper nitrate in the step B3 is 1.25:1, and the dosage ratio of the ammonium molybdate tetrahydrate, the thiourea, the precursor and the deionized water is 80mg:160mg:40mg:35mL.
Example 2
The processing technology for the wear-resistant shell of the cable specifically comprises the following steps:
The sheath is subjected to corona treatment under the condition that the high-frequency alternating voltage is 10000V/m 2, then is soaked in ethanol, KH570 and deionized water are added, ultrasonic treatment is carried out for 13min under the condition that the frequency is 25kHz, then the sheath is taken out, dried and coated with graphite paint, and the wear-resistant sheath is prepared by irradiation of 365nm ultraviolet light for 25 min.
The volume ratio of KH570, ethanol and deionized water is 1:15:20, and the amount of diphenyl ketone is 0.4% of the mass of octavinyl silsesquioxane.
The sheath is made by the following steps:
Weighing the following raw materials in parts by weight: 50 parts of PVC resin powder, 33 parts of nano calcium, 15 parts of dioctyl ester, 12 parts of paraffin, 5 parts of wear-resistant powder, 2 parts of carbon black, 2 parts of stabilizer, 0.0.4 parts of PE wax and 0.3 part of stearic acid, extruding and granulating the raw materials at 170-185 ℃, and uniformly extruding and wrapping the raw materials on the surface of a cable body through an extruder to obtain the sheath.
The PVC resin powder is SG-5, the PE wax is DP0020F, the wear-resistant powder is polytetrafluoroethylene F-114, and the stabilizer is 8366.
The graphite coating is prepared by the following steps:
step A1: mixing polytetrahydrofuran and isophorone diisocyanate, reacting for 4 hours at the rotation speed of 150r/min and the temperature of 93 ℃, adding dihydroxymethylpropanoic acid, reacting for 2.5 hours, adding hydroxyethyl acrylate, reacting for 1.5 hours, adding deionized water, cooling to 38 ℃, adding triethylamine, and reacting for 35 minutes to obtain modified resin liquid;
Step A2: weighing the following raw materials in parts by weight: 90 parts of modified resin liquid, 25 parts of modified filler, 1.3 parts of photoinitiator, 0.3 part of flatting agent and 0.2 part of defoamer, and uniformly mixing the raw materials to prepare the graphite coating.
The dosage ratio of the polytetrahydrofuran, isophorone diisocyanate, dihydroxymethylpropanoic acid, hydroxyethyl acrylate, deionized water and triethylamine in the step A1 is 20mmol:35mmol:1mmol:9mmol:60mL:1.5mmol, and the molecular weight of the polytetrahydrofuran is 2000.
The photoinitiator in the step A2 is a photoinitiator 184, the leveling agent is BYK345, and the defoaming agent is DAPRO DF7072.
The modified filler is prepared by the following steps:
Step B1: uniformly mixing p-hydroxybenzaldehyde, epichlorohydrin, benzyl triethyl ammonium chloride and DMF (dimethyl formamide), reacting for 5 hours under the condition of the rotation speed of 200r/min, the temperature of 103 ℃ and the protection of nitrogen, cooling to 73 ℃, adding sodium hydroxide solution, continuing to react for 18 hours to obtain an intermediate 1, uniformly mixing KH550, KH570, hydrochloric acid solution and methanol, stirring and adding deionized water under the condition of the rotation speed of 150r/min and the temperature of 23 ℃, and reacting for 4 days to obtain the functionalized silsesquioxane;
step B2: uniformly mixing the intermediate 1, the functionalized silsesquioxane and the DMF, reacting for 7 hours at the rotation speed of 120r/min and the temperature of 45 ℃ and the pH value of 12 to obtain an intermediate 2, uniformly mixing the intermediate 2, the o-phenylenediamine, the potassium carbonate and the DMF, reacting for 13 hours at the rotation speed of 150r/min and the temperature of 83 ℃ and then adjusting the pH value to 5 to obtain an intermediate 3;
step B3: mixing the intermediate 3, copper nitrate and DMF, reacting for 25 hours at the rotation speed of 150r/min and the temperature of 123 ℃, filtering to remove filtrate, drying to obtain a precursor, uniformly mixing ammonium molybdate tetrahydrate, thiourea, the precursor and deionized water, and performing hydrothermal reaction for 13 hours at the temperature of 215 ℃ under the pressure of 10MPa to obtain the modified filler.
The dosage ratio of the p-hydroxybenzaldehyde, the epichlorohydrin to the sodium hydroxide to the epichlorohydrin to the sodium hydroxide solution is 40mmol:80mmol:10mL, the mass fraction of the sodium hydroxide solution is 30%, the dosage of the benzyl triethyl ammonium chloride is 2% of the sum of the mass of the p-hydroxybenzaldehyde and the epichlorohydrin, the dosage ratio of KH550, KH570 to deionized water is 600mmol:225mmol:72mL:30mL, and the concentration of the hydrochloric acid solution is 1.2mol/L.
The molar ratio of the intermediate 1 to the functionalized silsesquioxane in the step B2 is 12:1, and the dosage ratio of the intermediate 2 to the o-phenylenediamine to the potassium carbonate is 1mmol to 12mmol to 1g.
The molar ratio of the intermediate 3 to the copper nitrate in the step B3 is 1.25:1, and the dosage ratio of the ammonium molybdate tetrahydrate, the thiourea, the precursor and the deionized water is 80mg:160mg:40mg:35mL.
Example 3
The processing technology for the wear-resistant shell of the cable specifically comprises the following steps:
The sheath is subjected to corona treatment under the condition that the high-frequency alternating current voltage is 15000V/m 2, then is soaked in ethanol, KH570 and deionized water are added, ultrasonic treatment is carried out for 15min under the condition that the frequency is 30kHz, then the sheath is taken out, dried and coated with graphite paint, and the abrasion-resistant sheath is prepared by irradiation of 365nm ultraviolet light for 30 min.
The volume ratio of KH570, ethanol and deionized water is 1:15:20, and the amount of diphenyl ketone is 0.5% of the mass of octavinyl silsesquioxane.
The sheath is made by the following steps:
Weighing the following raw materials in parts by weight: 55 parts of PVC resin powder, 35 parts of nano calcium, 20 parts of dioctyl ester, 15 parts of paraffin, 8 parts of wear-resistant powder, 3 parts of carbon black, 3 parts of stabilizer, 0.5 part of PE wax and 0.2-0.5 part of stearic acid, extruding and granulating the raw materials at 185 ℃, and uniformly extruding and wrapping the raw materials on the surface of a cable body through an extruding machine to obtain the sheath.
The PVC resin powder is SG-5, the PE wax is DP0020F, the wear-resistant powder is polytetrafluoroethylene F-114, and the stabilizer is 8366.
The graphite coating is prepared by the following steps:
Step A1: mixing polytetrahydrofuran and isophorone diisocyanate, reacting for 5 hours at the rotation speed of 200r/min and the temperature of 95 ℃, adding dihydroxymethylpropanoic acid, reacting for 3 hours, adding hydroxyethyl acrylate, reacting for 1.5 hours, adding deionized water, cooling to 40 ℃, adding triethylamine, and reacting for 40 minutes to obtain modified resin liquid;
Step A2: weighing the following raw materials in parts by weight: 100 parts of modified resin liquid, 30 parts of modified filler, 1.5 parts of photoinitiator, 0.5 part of flatting agent and 0.2 part of defoamer, and uniformly mixing the raw materials to prepare the graphite coating.
The dosage ratio of the polytetrahydrofuran, isophorone diisocyanate, dihydroxymethylpropanoic acid, hydroxyethyl acrylate, deionized water and triethylamine in the step A1 is 20mmol:35mmol:1mmol:9mmol:60mL:1.5mmol, and the molecular weight of the polytetrahydrofuran is 2000.
The photoinitiator in the step A2 is a photoinitiator 369, the leveling agent is BYK349, and the defoaming agent is TEGO FOAMEX 1488.
The modified filler is prepared by the following steps:
step B1: uniformly mixing p-hydroxybenzaldehyde, epichlorohydrin, benzyl triethyl ammonium chloride and DMF (dimethyl formamide), reacting for 4 hours under the condition of the rotation speed of 300r/min, the temperature of 105 ℃ and the protection of nitrogen, cooling to 75 ℃, adding sodium hydroxide solution, continuously reacting for 20 hours to obtain an intermediate 1, uniformly mixing KH550, KH570, hydrochloric acid solution and methanol, stirring and adding deionized water under the condition of the rotation speed of 200r/min and the temperature of 25 ℃, and reacting for 5 days to obtain the functionalized silsesquioxane;
Step B2: uniformly mixing the intermediate 1, the functionalized silsesquioxane and the DMF, reacting for 8 hours at the rotation speed of 150r/min and the temperature of 50 ℃ and the pH value of 12 to obtain an intermediate 2, uniformly mixing the intermediate 2, the o-phenylenediamine, the potassium carbonate and the DMF, reacting for 15 hours at the rotation speed of 200r/min and the temperature of 85 ℃ to obtain an intermediate 3, and regulating the pH value to 5;
Step B3: mixing the intermediate 3, copper nitrate and DMF, reacting at the rotation speed of 150r/min and the temperature of 125 ℃ for 25 hours, filtering to remove filtrate, drying to obtain a precursor, uniformly mixing ammonium molybdate tetrahydrate, thiourea, the precursor and deionized water, and performing hydrothermal reaction at the pressure of 15MPa and the temperature of 220 ℃ for 15 hours to obtain the modified filler.
The dosage ratio of the p-hydroxybenzaldehyde, the epichlorohydrin to the sodium hydroxide to the epichlorohydrin to the sodium hydroxide solution is 40mmol:80mmol:10mL, the mass fraction of the sodium hydroxide solution is 30%, the dosage of the benzyl triethyl ammonium chloride is 3% of the sum of the mass of the p-hydroxybenzaldehyde and the epichlorohydrin, the dosage ratio of KH550, KH570 to deionized water is 600mmol:225mmol:72mL:30mL, and the concentration of the hydrochloric acid solution is 1.2mol/L.
The molar ratio of the intermediate 1 to the functionalized silsesquioxane in the step B2 is 12:1, and the dosage ratio of the intermediate 2 to the o-phenylenediamine to the potassium carbonate is 1mmol to 12mmol to 1g.
The molar ratio of the intermediate 3 to the copper nitrate in the step B3 is 1.25:1, and the dosage ratio of the ammonium molybdate tetrahydrate, the thiourea, the precursor and the deionized water is 80mg:160mg:40mg:35mL.
Comparative example 1
This comparative example uses the precursor instead of the abrasion resistant material as compared to example 1, the rest of the procedure being the same.
Comparative example 2
This comparative example replaces the functionalized silsesquioxane with octaaminophenyl silsesquioxane as compared to example 1, with the remainder of the procedure.
Comparative example 3
This comparative example uses graphene oxide instead of precursor as compared to example 1, the rest of the procedure being the same.
The shell materials prepared in examples 1-3 and comparative examples 1-3 were subjected to a 50N load on an M-200 frictional wear tester according to GB/T1768-79, the test loop back rate was 200rpm, the wear distance was 500M, the loss in wear was measured, the coefficient of friction was calculated, and the test results are shown in the following table.
Example 1 Example 2 Example 3 Comparative example 1 Comparative example 2 Comparative example 3
Weight loss on abrasion mg 252 248 245 284 368 351
Coefficient of friction 0.17 0.15 0.14 0.31 0.65 0.58
The table shows that the application has good wear-resisting effect.
The foregoing is merely illustrative and explanatory of the principles of the invention, as various modifications and additions may be made to the specific embodiments described, or similar thereto, by those skilled in the art, without departing from the principles of the invention or beyond the scope of the appended claims.

Claims (10)

1. A process for manufacturing a wear-resistant casing for cables, characterized by: the method specifically comprises the following steps:
And (3) after corona treatment of the sheath, soaking the sheath in ethanol, adding KH570 and deionized water, carrying out ultrasonic treatment, taking out, drying, coating graphite paint, and carrying out ultraviolet irradiation to obtain the wear-resistant sheath.
2. A process for the manufacture of a wear resistant casing for cables according to claim 1, characterized in that: the volume ratio of KH570, ethanol and deionized water is 1:15:20, and the amount of diphenyl ketone is 0.2-0.5% of the mass of octavinyl silsesquioxane.
3. A process for the manufacture of a wear resistant casing for cables according to claim 1, characterized in that: the sheath is made by the following steps:
The raw materials with the following parts by weight are taken: 45-55 parts of PVC resin powder, 30-35 parts of nano calcium, 10-20 parts of dioctyl ester, 10-15 parts of paraffin, 3-8 parts of wear-resistant powder, 1-3 parts of carbon black, 1-3 parts of stabilizer, 0.3-0.5 part of PE wax and 0.2-0.5 part of stearic acid, extruding and granulating the raw materials, and uniformly extruding and wrapping the raw materials on the surface of a cable body through an extruding machine to obtain the sheath.
4. A process for the manufacture of a wear resistant casing for cables according to claim 3, characterized in that: the graphite coating is prepared by the following steps:
Step A1: mixing polytetrahydrofuran and isophorone diisocyanate for reaction, adding dihydroxymethylpropanoic acid for reaction, adding hydroxyethyl acrylate for continuous reaction, adding deionized water and triethylamine for reaction, and preparing modified resin liquid;
Step A2: weighing the following raw materials in parts by weight: 80-100 parts of modified resin liquid, 20-30 parts of modified filler, 1-1.5 parts of photoinitiator, 0.2-0.5 part of flatting agent and 0.1-0.2 part of defoamer, and uniformly mixing the raw materials to prepare the graphite coating.
5. A process for the manufacture of a wear resistant casing for cables according to claim 4, characterized in that: the dosage ratio of polytetrahydrofuran, isophorone diisocyanate, dihydroxymethylpropionic acid, hydroxyethyl acrylate, deionized water and triethylamine in step A1 is 20mmol:35mmol:1mmol:9mmol:60mL:1.5mmol.
6. A process for the manufacture of a wear resistant casing for cables according to claim 4, characterized in that: the modified filler is prepared by the following steps:
step B1: mixing and reacting p-hydroxybenzaldehyde, epichlorohydrin, benzyl triethyl ammonium chloride and DMF, adding a sodium hydroxide solution, continuing to react to obtain an intermediate 1, mixing and stirring KH550, KH570, a hydrochloric acid solution and methanol, adding deionized water, and reacting to obtain functionalized silsesquioxane;
Step B2: mixing and reacting the intermediate 1, the functionalized silsesquioxane and DMF to obtain an intermediate 2, mixing and reacting the intermediate 2, o-phenylenediamine, potassium carbonate and DMF, and adjusting the pH value to 5 to obtain an intermediate 3;
Step B3: and mixing the intermediate 3, copper nitrate and DMF for reaction, filtering to remove filtrate, drying to obtain a precursor, and mixing ammonium molybdate tetrahydrate, thiourea, the precursor and deionized water for hydrothermal reaction to obtain the modified filler.
7. The process for manufacturing a wear resistant casing for cables according to claim 6, characterized in that: the dosage ratio of the p-hydroxybenzaldehyde, the epichlorohydrin and the sodium hydroxide to the epichlorohydrin and the sodium hydroxide solution in the step B1 is 40mmol:80mmol:10mL, and the dosage ratio of KH550, KH570 and deionized water is 600mmol:225mmol:72mL:30mL.
8. The process for manufacturing a wear resistant casing for cables according to claim 6, characterized in that: the molar ratio of the intermediate 1 to the functionalized silsesquioxane in the step B2 is 12:1, and the dosage ratio of the intermediate 2 to the o-phenylenediamine to the potassium carbonate is 1mmol to 12mmol to 1g.
9. The process for manufacturing a wear resistant casing for cables according to claim 6, characterized in that: the molar ratio of the intermediate 3 to the copper nitrate in the step B3 is 1.25:1, and the dosage ratio of the ammonium molybdate tetrahydrate, the thiourea, the precursor and the deionized water is 80mg:160mg:40mg:35mL.
10. A wear resistant housing for a cable, characterized by: the preparation method according to any one of claims 1 to 9.
CN202410109479.6A 2024-01-26 2024-01-26 Wear-resistant shell for cable and processing technology thereof Pending CN117903482A (en)

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CN202410109479.6A CN117903482A (en) 2024-01-26 2024-01-26 Wear-resistant shell for cable and processing technology thereof

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CN117903482A true CN117903482A (en) 2024-04-19

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