CN111961334A - Elastomer insulation cable for automobile - Google Patents
Elastomer insulation cable for automobile Download PDFInfo
- Publication number
- CN111961334A CN111961334A CN202010873157.0A CN202010873157A CN111961334A CN 111961334 A CN111961334 A CN 111961334A CN 202010873157 A CN202010873157 A CN 202010873157A CN 111961334 A CN111961334 A CN 111961334A
- Authority
- CN
- China
- Prior art keywords
- stirring
- elastomer
- temperature
- parts
- controlling
- 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.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—Polyurethanes
- C08L75/14—Polyurethanes having carbon-to-carbon unsaturated bonds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
- C08G65/02—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
- C08G65/26—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds
- C08G65/2618—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds the other compounds containing nitrogen
- C08G65/2621—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds the other compounds containing nitrogen containing amine groups
- C08G65/2624—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds the other compounds containing nitrogen containing amine groups containing aliphatic amine groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
- C08G65/02—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
- C08G65/32—Polymers modified by chemical after-treatment
- C08G65/321—Polymers modified by chemical after-treatment with inorganic compounds
- C08G65/328—Polymers modified by chemical after-treatment with inorganic compounds containing other elements
-
- 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
- H01B3/302—Polyurethanes or polythiourethanes; Polyurea or polythiourea
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/04—Antistatic
-
- 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
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)
- Inorganic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Polyurethanes Or Polyureas (AREA)
- Organic Insulating Materials (AREA)
Abstract
The invention discloses an elastomer insulated automobile cable which comprises the following raw materials in parts by weight: 55-75 parts of polyurethane elastomer, 1-5 parts of antistatic filler, 3-5 parts of lubricant, 25-30 parts of plasticizer and 0.5-1 part of nano silicon dioxide; adding the polyurethane elastomer, the antistatic filler, the lubricant, the plasticizer and the nano silicon dioxide into a mixing roll for mixing, controlling the mixing time to be 5-8min, then shearing and granulating through a double-screw extruder, and then transferring to a vulcanizing machine for vulcanization and pressing; the antistatic filler has strong polar groups and longer alkyl chains, so that the polar groups transferred into surface molecules absorb moisture in the air to form a conductive layer microfilm, the charge dissipation is accelerated, the conductive layer microfilm is not dissociated into ions, the charges cannot be leaked through self conduction, and the antistatic performance of the antistatic filler is further enhanced.
Description
Technical Field
The invention belongs to the technical field of cable preparation, and particularly relates to an elastomer insulation automobile cable.
Background
An automobile is mounted with various electronic devices, and thus, a wire harness is arranged in the automobile to transmit desired electric power and signals to the electronic devices. For the automobile cable, because the distribution range is wide, the power consumption is high, the corresponding voltage is also high, higher requirements are provided for the high-voltage resistance and the high-temperature resistance of the wiring harness, in addition, the electromagnetic radiation caused by a high-power electric appliance is also larger, and the larger electromagnetic radiation can bring great influence on some precise parts in the automobile, therefore, higher requirements are provided for the high-voltage resistance, the high-temperature resistance and the antistatic performance of the wiring harness.
Chinese invention patent CN101386697A A soft polyvinyl chloride plastic for automobile wires and cables and a preparation method thereof, comprises the following components by mass fraction: 100 parts of PVC plasticizer I20-50 parts, plasticizer II 5-55 parts, heat stabilizer 4-12 parts, lubricant I0.1-1 part, lubricant II 0.1-1 part, antioxidant I0.1-1.0 part, antioxidant II 0.1-1.0 part, filler 5-60 parts, cross-linking agent 5-30 parts, initiator 0.05-0.3 part, cross-linking assistant 0.5-3 parts, and wear-resistant modifier 3-10 parts; wherein: the polymerization degree of the PVC is 1000-2500; the first plasticizer is citric acid ester, petroleum ester or benzene polyacid ester; the second plasticizer is a cold-resistant or other plasticizer; the heat stabilizer is a calcium-zinc stabilizer; the lubricant I is stearic acid; the lubricant II is a high molecular aliphatic group; the first antioxidant is a composite antioxidant comprising an antioxidant 1010 and phosphite ester or bisphenol A; and the second antioxidant is a DLTDP antioxidant.
Disclosure of Invention
In order to overcome the technical problem, the invention provides an elastomer insulated automobile cable.
The second intermediate of the invention has a cyclic carbonate structure; and in the third step, the second intermediate and diphenylmethane diisocyanate are mixed in the activated ethylene glycol, and polyethylene glycol is added to prepare the polyurethane elastomer.
The purpose of the invention can be realized by the following technical scheme:
an elastomer insulation automobile cable comprises the following raw materials in parts by weight: 55-75 parts of polyurethane elastomer, 1-5 parts of antistatic filler, 3-5 parts of lubricant, 25-30 parts of plasticizer and 0.5-1 part of nano silicon dioxide;
the elastomer insulated cable for the automobile is prepared by the following method:
adding a polyurethane elastomer, an antistatic filler, a lubricant, a plasticizer and nano silicon dioxide into a mixing roll for mixing, controlling the mixing time to be 5-8min, then shearing and granulating by a double-screw extruder, controlling the temperature of a feeding section in the double-screw extruder to be 140-150 ℃, the temperature of a compression section to be 150-160 ℃, the temperature of a homogenizing section to be 160-170 ℃, then transferring to a vulcanizing machine for vulcanizing and pressing, controlling the temperature of the vulcanizing machine to be 175-185 ℃, the pressure to be 15-18MPa, and the pressing time to be 5-8min to obtain a cable material, and then coating the cable material on the surface of a conductor to obtain the elastomer insulated automobile cable.
Further, the lubricant is one or two of stearic acid and butyl stearate which are mixed according to any proportion, and the plasticizer is one or two of phthalate and alkyl sulfonate which are mixed according to any proportion.
Further, the polyurethane elastomer is prepared by the following method:
firstly, sequentially adding methyl linoleate and erythritol into a three-neck flask, uniformly mixing, adding sodium carbonate, heating by using a 150-DEG C160-DEG C oil bath, stirring for 4 hours at the rotating speed of 120r/min, standing for 2 hours after stirring is finished, centrifugally separating dissolved sodium carbonate, then placing into a rotary evaporator, rotatably evaporating for 30 minutes at the temperature of 50-55 ℃ and under the pressure of 0.01MPa, then adding a 2mol/L dilute hydrochloric acid solution to remove the sodium carbonate which is not completely removed, washing to be neutral by using deionized water, and then evaporating for 10 minutes at the temperature of 85-95 ℃ and under the pressure of 0.01MPa to obtain a first intermediate;
secondly, adding the first intermediate and dimethyl carbonate prepared in the first step into a three-neck flask, uniformly mixing, adding triethylamine, introducing nitrogen, placing the mixture into an oil bath at 90-100 ℃, stirring the mixture for 2 hours at the rotating speed of 120r/min, taking the mixture out after the stirring is finished, evaporating and removing unreacted triethylamine and dimethyl carbonate under the conditions that the temperature is 50-55 ℃ and the pressure is 0.01MPa, and washing the mixture to be neutral by deionized water to prepare a second intermediate;
and thirdly, adding the prepared second intermediate into a three-neck flask, heating to 55-60 ℃, carrying out vacuum dehydration and degassing for 2h, then cooling to 30-35 ℃, introducing nitrogen, adding an activated ethylene glycol solution with the volume fraction of 15%, uniformly mixing, adding diphenylmethane diisocyanate, stirring at the rotating speed of 420-450r/min for 10min, adding polyethylene glycol, reacting at the temperature for 2h to obtain a prepolymer, then carrying out evaporation concentration for 15min, and curing at 55-60 ℃ for 4h to obtain a polyurethane elastomer, wherein the mass ratio of the second intermediate, the ethylene glycol, the diphenylmethane diisocyanate and the polyethylene glycol is controlled to be 2: 1.
In the first step, methyl linoleate and butanetetraol are mixed, then sodium carbonate is added as a catalyst, ester exchange reaction is carried out between methyl linoleate and butanetetraol to prepare a first intermediate, sodium carbonate which is not completely removed is removed through a dilute hydrochloric acid solution in the preparation process, and the sodium carbonate serving as the catalyst is prevented from participating in the subsequent preparation process; in the second step, the prepared first intermediate is mixed with dimethyl carbonate, triethylamine is added to be used as a catalyst to prepare a second intermediate, substitution reaction is carried out between the first intermediate and the dimethyl carbonate, and cyclic carbonate is formed between the dimethyl carbonate and the first intermediate, so that the second intermediate has a cyclic carbonate structure; and in the third step, the second intermediate and diphenylmethane diisocyanate are mixed in the activated ethylene glycol, and polyethylene glycol is added to prepare the polyurethane elastomer.
Furthermore, the mass ratio of the methyl linoleate to the butanetetraol is controlled to be 1: 2-3 in the first step, the mass ratio of the sodium carbonate to the mass ratio of the methyl linoleate to the butanetetraol is controlled to be 0.8% -1%, the mass ratio of the first intermediate to the dimethyl carbonate is controlled to be 1: 2 in the second step, and the mass ratio of the triethylamine to the mass ratio of the first intermediate to the dimethyl carbonate is controlled to be 05% -0.6%.
Further, the antistatic filler is prepared by the following method:
step S1, adding dodecyl primary amine and absolute ethyl alcohol into a beaker in sequence, heating in a water bath at 45-50 ℃, stirring for 30min at a rotating speed of 120r/min, dropwise adding ethylene oxide, controlling the dropwise adding time to be 5min, stirring for 10min at a constant speed after the dropwise adding is finished, adding a dilute hydrochloric acid aqueous solution with the mass fraction of 10%, heating to 70-75 ℃, magnetically stirring for 3h, transferring to a vacuum drying oven, controlling the vacuum degree to be-0.10 MPa and the temperature to be 90-95 ℃, drying until a solvent is completely evaporated, and preparing a compound A, wherein the amount ratio of the dodecyl primary amine to the ethylene oxide to the dilute hydrochloric acid is controlled to be 1: 2: 0.3-0.5;
and S2, adding the compound A prepared in the step S1, half toluene and one third boric acid into a three-neck flask, magnetically stirring and heating to 100-110 ℃, introducing nitrogen, adding the remaining boric acid into the remaining toluene, magnetically stirring for 10min, then dripping into the three-neck flask, controlling the dripping time to be 55-60min, then carrying out reduced pressure distillation until the toluene is evaporated out, and preparing the antistatic filler, wherein the mass ratio of the compound A, the toluene and the boric acid is controlled to be 1: 10: 2-3.
In the step S1, dodecyl primary amine and ethylene oxide are mixed in absolute ethyl alcohol to react, 10% dilute hydrochloric acid is added in the reaction process, the hydrochloric acid can perform affinity addition on the ethylene oxide to generate a catalytic action, so that the reaction process is accelerated, and finally a compound A is prepared, wherein the compound A belongs to an ethylene oxide amine adduct, boric acid is added in the step S2, boron is introduced into a molecular chain, so that the compatibility of a polymer is improved, and the antistatic filler is prepared, has a strong polar group and a long alkyl chain, so that moisture in the air is absorbed by the polar group transferred into surface molecules to form a conductive layer microfilm, the charge dissipation is accelerated, ions are not dissociated, charges cannot be leaked through self conduction, and the antistatic performance of the antistatic filler is further enhanced.
The invention has the beneficial effects that:
(1) the invention relates to an elastomer insulated automobile cable which is prepared by taking a polyurethane elastomer, an antistatic filler and the like as raw materials, wherein in the preparation process of the polyurethane elastomer, methyl linoleate and butanetetraol are mixed in the first step, then sodium carbonate is added as a catalyst, and an ester exchange reaction is carried out between the methyl linoleate and the butanetetraol to prepare a first intermediate; in the second step, the prepared first intermediate is mixed with dimethyl carbonate, triethylamine is added to be used as a catalyst to prepare a second intermediate, substitution reaction is carried out between the first intermediate and the dimethyl carbonate, and cyclic carbonate is formed between the dimethyl carbonate and the first intermediate, so that the second intermediate has a cyclic carbonate structure; and in the third step, the second intermediate and diphenylmethane diisocyanate are mixed in the activated ethylene glycol, and polyethylene glycol is added to prepare the polyurethane elastomer.
(2) The invention prepares the antistatic filler, in the preparation process, in step S1, dodecyl primary amine and ethylene oxide are mixed in absolute ethyl alcohol for reaction, and 10 percent of dilute hydrochloric acid is added in the reaction process, the hydrochloric acid can carry out affinity addition on the ethylene oxide to generate catalytic action, further the reaction process is accelerated, and the compound A is finally prepared, the compound A belongs to an ethylene oxide amine adduct, boric acid is added in step S2, boron is introduced into the molecular chain, further improving the compatibility of the polymer to prepare the antistatic filler which not only has stronger polar groups but also has longer alkyl chains, therefore, the polar groups transferred into the surface molecules absorb the moisture in the air to form a conductive layer micro-film, accelerate the charge dissipation, and the antistatic agent is not dissociated into ions, so that charges cannot be leaked through self conduction, and the antistatic performance of the antistatic agent is further enhanced.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
An elastomer insulation automobile cable comprises the following raw materials in parts by weight: 55 parts of polyurethane elastomer, 1 part of antistatic filler, 3 parts of stearic acid, 25 parts of phthalic acid ester and 0.5 part of nano silicon dioxide;
the elastomer insulated cable for the automobile is prepared by the following method:
adding a polyurethane elastomer, an antistatic filler, stearic acid, phthalate and nano silicon dioxide into a mixing roll for mixing, controlling the mixing time to be 5min, then shearing and granulating by a double-screw extruder, controlling the temperature of a feeding section in the double-screw extruder to be 140 ℃, the temperature of a compression section to be 150 ℃, the temperature of a homogenization section to be 160 ℃, then transferring to a vulcanizing machine for vulcanization and pressing, controlling the temperature of the vulcanizing machine to be 175 ℃, the pressure to be 15MPa and the pressing time to be 5min, preparing a cable material, and then coating the cable material on the surface of a conductor to prepare the elastomer insulated automobile cable.
The polyurethane elastomer is prepared by the following method:
firstly, sequentially adding methyl linoleate and erythritol into a three-neck flask, uniformly mixing, adding sodium carbonate, heating in an oil bath at 150 ℃, stirring at the rotating speed of 100r/min for 4 hours, standing for 2 hours after stirring, centrifugally separating dissolved sodium carbonate, placing in a rotary evaporator, rotationally evaporating for 30 minutes under the conditions that the temperature is 50 ℃ and the pressure is 0.01MPa, then adding a dilute hydrochloric acid solution with the concentration of 2mol/L to remove the sodium carbonate which is not completely removed, washing with deionized water to be neutral, and then evaporating for 10 minutes under the conditions that the temperature is 85 ℃ and the pressure is 0.01MPa to prepare a first intermediate, wherein the ratio of the mass of the methyl linoleate to the mass of the erythritol is controlled to be 1: 2, and the amount of the sodium carbonate is 0.8% of the mass sum of the methyl linoleate and the erythritol;
secondly, adding the first intermediate and dimethyl carbonate prepared in the first step into a three-neck flask, uniformly mixing, adding triethylamine, introducing nitrogen, placing the mixture into an oil bath at 90 ℃, stirring the mixture for 2 hours at a rotating speed of 100r/min, taking the mixture out after stirring, evaporating and removing unreacted triethylamine and dimethyl carbonate under the conditions that the temperature is 50 ℃ and the pressure is 0.01MPa, washing the mixture to be neutral by deionized water to prepare a second intermediate, controlling the mass ratio of the first intermediate to the dimethyl carbonate to be 1: 2, and controlling the dosage of the triethylamine to be 05% of the mass sum of the first intermediate and the dimethyl carbonate;
and thirdly, adding the prepared second intermediate into a three-neck flask, heating to 55 ℃, carrying out vacuum dehydration and degassing for 2h, then cooling to 30 ℃, introducing nitrogen, adding an activated ethylene glycol solution with the volume fraction of 15%, uniformly mixing, adding diphenylmethane diisocyanate, stirring at the rotating speed of 420r/min for 10min, adding polyethylene glycol, reacting at the temperature for 2h to prepare a prepolymer, then carrying out evaporation concentration for 15min, and curing at 55 ℃ for 4h to prepare a polyurethane elastomer, wherein the amount ratio of the second intermediate, the ethylene glycol, the diphenylmethane diisocyanate and the polyethylene glycol is controlled to be 2: 1.
The antistatic filler is prepared by the following method:
step S1, adding dodecyl primary amine and absolute ethyl alcohol into a beaker in sequence, heating in a 45 ℃ water bath, stirring for 30min at a rotating speed of 120r/min, dropwise adding ethylene oxide, controlling the dropwise adding time to be 5min, stirring for 10min at a constant speed after the dropwise adding is finished, adding a dilute hydrochloric acid aqueous solution with the mass fraction of 10%, heating to 70 ℃, magnetically stirring for 3h, transferring to a vacuum drying oven, controlling the vacuum degree to be-0.10 MPa and the temperature to be 90 ℃, drying until the solvent is completely evaporated, preparing a compound A, and controlling the amount ratio of the dodecyl primary amine, the ethylene oxide and the dilute hydrochloric acid to be 1: 2: 0.3;
and S2, adding the compound A prepared in the step S1, half toluene and one third boric acid into a three-neck flask, magnetically stirring and heating to 100 ℃, introducing nitrogen, adding the rest boric acid into the rest toluene, magnetically stirring for 10min, then dripping into the three-neck flask, controlling the dripping time to be 55min, then carrying out reduced pressure distillation until the toluene is evaporated out, and preparing the antistatic filler, wherein the mass ratio of the compound A, the toluene and the boric acid is controlled to be 1: 10: 2.
Example 2
An elastomer insulation automobile cable comprises the following raw materials in parts by weight: 60 parts of polyurethane elastomer, 2 parts of antistatic filler, 4 parts of stearic acid, 28 parts of phthalate and 0.6 part of nano silicon dioxide;
the elastomer insulated cable for the automobile is prepared by the following method:
adding a polyurethane elastomer, an antistatic filler, stearic acid, phthalate and nano silicon dioxide into a mixing roll for mixing, controlling the mixing time to be 5min, then shearing and granulating by a double-screw extruder, controlling the temperature of a feeding section in the double-screw extruder to be 140 ℃, the temperature of a compression section to be 150 ℃, the temperature of a homogenization section to be 160 ℃, then transferring to a vulcanizing machine for vulcanization and pressing, controlling the temperature of the vulcanizing machine to be 175 ℃, the pressure to be 15MPa and the pressing time to be 5min, preparing a cable material, and then coating the cable material on the surface of a conductor to prepare the elastomer insulated automobile cable.
The polyurethane elastomer is prepared by the following method:
firstly, sequentially adding methyl linoleate and erythritol into a three-neck flask, uniformly mixing, adding sodium carbonate, heating in an oil bath at 150 ℃, stirring at the rotating speed of 100r/min for 4 hours, standing for 2 hours after stirring, centrifugally separating dissolved sodium carbonate, placing in a rotary evaporator, rotationally evaporating for 30 minutes under the conditions that the temperature is 50 ℃ and the pressure is 0.01MPa, then adding a dilute hydrochloric acid solution with the concentration of 2mol/L to remove the sodium carbonate which is not completely removed, washing with deionized water to be neutral, and then evaporating for 10 minutes under the conditions that the temperature is 85 ℃ and the pressure is 0.01MPa to prepare a first intermediate, wherein the ratio of the mass of the methyl linoleate to the mass of the erythritol is controlled to be 1: 2, and the amount of the sodium carbonate is 0.8% of the mass sum of the methyl linoleate and the erythritol;
secondly, adding the first intermediate and dimethyl carbonate prepared in the first step into a three-neck flask, uniformly mixing, adding triethylamine, introducing nitrogen, placing the mixture into an oil bath at 90 ℃, stirring the mixture for 2 hours at a rotating speed of 100r/min, taking the mixture out after stirring, evaporating and removing unreacted triethylamine and dimethyl carbonate under the conditions that the temperature is 50 ℃ and the pressure is 0.01MPa, washing the mixture to be neutral by deionized water to prepare a second intermediate, controlling the mass ratio of the first intermediate to the dimethyl carbonate to be 1: 2, and controlling the dosage of the triethylamine to be 05% of the mass sum of the first intermediate and the dimethyl carbonate;
and thirdly, adding the prepared second intermediate into a three-neck flask, heating to 55 ℃, carrying out vacuum dehydration and degassing for 2h, then cooling to 30 ℃, introducing nitrogen, adding an activated ethylene glycol solution with the volume fraction of 15%, uniformly mixing, adding diphenylmethane diisocyanate, stirring at the rotating speed of 420r/min for 10min, adding polyethylene glycol, reacting at the temperature for 2h to prepare a prepolymer, then carrying out evaporation concentration for 15min, and curing at 55 ℃ for 4h to prepare a polyurethane elastomer, wherein the amount ratio of the second intermediate, the ethylene glycol, the diphenylmethane diisocyanate and the polyethylene glycol is controlled to be 2: 1.
The antistatic filler is prepared by the following method:
step S1, adding dodecyl primary amine and absolute ethyl alcohol into a beaker in sequence, heating in a 45 ℃ water bath, stirring for 30min at a rotating speed of 120r/min, dropwise adding ethylene oxide, controlling the dropwise adding time to be 5min, stirring for 10min at a constant speed after the dropwise adding is finished, adding a dilute hydrochloric acid aqueous solution with the mass fraction of 10%, heating to 70 ℃, magnetically stirring for 3h, transferring to a vacuum drying oven, controlling the vacuum degree to be-0.10 MPa and the temperature to be 90 ℃, drying until the solvent is completely evaporated, preparing a compound A, and controlling the amount ratio of the dodecyl primary amine, the ethylene oxide and the dilute hydrochloric acid to be 1: 2: 0.3;
and S2, adding the compound A prepared in the step S1, half toluene and one third boric acid into a three-neck flask, magnetically stirring and heating to 100 ℃, introducing nitrogen, adding the rest boric acid into the rest toluene, magnetically stirring for 10min, then dripping into the three-neck flask, controlling the dripping time to be 55min, then carrying out reduced pressure distillation until the toluene is evaporated out, and preparing the antistatic filler, wherein the mass ratio of the compound A, the toluene and the boric acid is controlled to be 1: 10: 2.
Example 3
An elastomer insulation automobile cable comprises the following raw materials in parts by weight: 65 parts of polyurethane elastomer, 4 parts of antistatic filler, 4 parts of stearic acid, 28 parts of phthalic acid ester and 0.8 part of nano silicon dioxide;
the elastomer insulated cable for the automobile is prepared by the following method:
adding a polyurethane elastomer, an antistatic filler, stearic acid, phthalate and nano silicon dioxide into a mixing roll for mixing, controlling the mixing time to be 5min, then shearing and granulating by a double-screw extruder, controlling the temperature of a feeding section in the double-screw extruder to be 140 ℃, the temperature of a compression section to be 150 ℃, the temperature of a homogenization section to be 160 ℃, then transferring to a vulcanizing machine for vulcanization and pressing, controlling the temperature of the vulcanizing machine to be 175 ℃, the pressure to be 15MPa and the pressing time to be 5min, preparing a cable material, and then coating the cable material on the surface of a conductor to prepare the elastomer insulated automobile cable.
The polyurethane elastomer is prepared by the following method:
firstly, sequentially adding methyl linoleate and erythritol into a three-neck flask, uniformly mixing, adding sodium carbonate, heating in an oil bath at 150 ℃, stirring at the rotating speed of 100r/min for 4 hours, standing for 2 hours after stirring, centrifugally separating dissolved sodium carbonate, placing in a rotary evaporator, rotationally evaporating for 30 minutes under the conditions that the temperature is 50 ℃ and the pressure is 0.01MPa, then adding a dilute hydrochloric acid solution with the concentration of 2mol/L to remove the sodium carbonate which is not completely removed, washing with deionized water to be neutral, and then evaporating for 10 minutes under the conditions that the temperature is 85 ℃ and the pressure is 0.01MPa to prepare a first intermediate, wherein the ratio of the mass of the methyl linoleate to the mass of the erythritol is controlled to be 1: 2, and the amount of the sodium carbonate is 0.8% of the mass sum of the methyl linoleate and the erythritol;
secondly, adding the first intermediate and dimethyl carbonate prepared in the first step into a three-neck flask, uniformly mixing, adding triethylamine, introducing nitrogen, placing the mixture into an oil bath at 90 ℃, stirring the mixture for 2 hours at a rotating speed of 100r/min, taking the mixture out after stirring, evaporating and removing unreacted triethylamine and dimethyl carbonate under the conditions that the temperature is 50 ℃ and the pressure is 0.01MPa, washing the mixture to be neutral by deionized water to prepare a second intermediate, controlling the mass ratio of the first intermediate to the dimethyl carbonate to be 1: 2, and controlling the dosage of the triethylamine to be 05% of the mass sum of the first intermediate and the dimethyl carbonate;
and thirdly, adding the prepared second intermediate into a three-neck flask, heating to 55 ℃, carrying out vacuum dehydration and degassing for 2h, then cooling to 30 ℃, introducing nitrogen, adding an activated ethylene glycol solution with the volume fraction of 15%, uniformly mixing, adding diphenylmethane diisocyanate, stirring at the rotating speed of 420r/min for 10min, adding polyethylene glycol, reacting at the temperature for 2h to prepare a prepolymer, then carrying out evaporation concentration for 15min, and curing at 55 ℃ for 4h to prepare a polyurethane elastomer, wherein the amount ratio of the second intermediate, the ethylene glycol, the diphenylmethane diisocyanate and the polyethylene glycol is controlled to be 2: 1.
The antistatic filler is prepared by the following method:
step S1, adding dodecyl primary amine and absolute ethyl alcohol into a beaker in sequence, heating in a 45 ℃ water bath, stirring for 30min at a rotating speed of 120r/min, dropwise adding ethylene oxide, controlling the dropwise adding time to be 5min, stirring for 10min at a constant speed after the dropwise adding is finished, adding a dilute hydrochloric acid aqueous solution with the mass fraction of 10%, heating to 70 ℃, magnetically stirring for 3h, transferring to a vacuum drying oven, controlling the vacuum degree to be-0.10 MPa and the temperature to be 90 ℃, drying until the solvent is completely evaporated, preparing a compound A, and controlling the amount ratio of the dodecyl primary amine, the ethylene oxide and the dilute hydrochloric acid to be 1: 2: 0.3;
and S2, adding the compound A prepared in the step S1, half toluene and one third boric acid into a three-neck flask, magnetically stirring and heating to 100 ℃, introducing nitrogen, adding the rest boric acid into the rest toluene, magnetically stirring for 10min, then dripping into the three-neck flask, controlling the dripping time to be 55min, then carrying out reduced pressure distillation until the toluene is evaporated out, and preparing the antistatic filler, wherein the mass ratio of the compound A, the toluene and the boric acid is controlled to be 1: 10: 2.
Example 4
An elastomer insulation automobile cable comprises the following raw materials in parts by weight: 75 parts of polyurethane elastomer, 5 parts of antistatic filler, 5 parts of stearic acid, 30 parts of phthalic acid ester and 1 part of nano silicon dioxide;
the elastomer insulated cable for the automobile is prepared by the following method:
adding a polyurethane elastomer, an antistatic filler, stearic acid, phthalate and nano silicon dioxide into a mixing roll for mixing, controlling the mixing time to be 5min, then shearing and granulating by a double-screw extruder, controlling the temperature of a feeding section in the double-screw extruder to be 140 ℃, the temperature of a compression section to be 150 ℃, the temperature of a homogenization section to be 160 ℃, then transferring to a vulcanizing machine for vulcanization and pressing, controlling the temperature of the vulcanizing machine to be 175 ℃, the pressure to be 15MPa and the pressing time to be 5min, preparing a cable material, and then coating the cable material on the surface of a conductor to prepare the elastomer insulated automobile cable.
The polyurethane elastomer is prepared by the following method:
firstly, sequentially adding methyl linoleate and erythritol into a three-neck flask, uniformly mixing, adding sodium carbonate, heating in an oil bath at 150 ℃, stirring at the rotating speed of 100r/min for 4 hours, standing for 2 hours after stirring, centrifugally separating dissolved sodium carbonate, placing in a rotary evaporator, rotationally evaporating for 30 minutes under the conditions that the temperature is 50 ℃ and the pressure is 0.01MPa, then adding a dilute hydrochloric acid solution with the concentration of 2mol/L to remove the sodium carbonate which is not completely removed, washing with deionized water to be neutral, and then evaporating for 10 minutes under the conditions that the temperature is 85 ℃ and the pressure is 0.01MPa to prepare a first intermediate, wherein the ratio of the mass of the methyl linoleate to the mass of the erythritol is controlled to be 1: 2, and the amount of the sodium carbonate is 0.8% of the mass sum of the methyl linoleate and the erythritol;
secondly, adding the first intermediate and dimethyl carbonate prepared in the first step into a three-neck flask, uniformly mixing, adding triethylamine, introducing nitrogen, placing the mixture into an oil bath at 90 ℃, stirring the mixture for 2 hours at a rotating speed of 100r/min, taking the mixture out after stirring, evaporating and removing unreacted triethylamine and dimethyl carbonate under the conditions that the temperature is 50 ℃ and the pressure is 0.01MPa, washing the mixture to be neutral by deionized water to prepare a second intermediate, controlling the mass ratio of the first intermediate to the dimethyl carbonate to be 1: 2, and controlling the dosage of the triethylamine to be 05% of the mass sum of the first intermediate and the dimethyl carbonate;
and thirdly, adding the prepared second intermediate into a three-neck flask, heating to 55 ℃, carrying out vacuum dehydration and degassing for 2h, then cooling to 30 ℃, introducing nitrogen, adding an activated ethylene glycol solution with the volume fraction of 15%, uniformly mixing, adding diphenylmethane diisocyanate, stirring at the rotating speed of 420r/min for 10min, adding polyethylene glycol, reacting at the temperature for 2h to prepare a prepolymer, then carrying out evaporation concentration for 15min, and curing at 55 ℃ for 4h to prepare a polyurethane elastomer, wherein the amount ratio of the second intermediate, the ethylene glycol, the diphenylmethane diisocyanate and the polyethylene glycol is controlled to be 2: 1.
The antistatic filler is prepared by the following method:
step S1, adding dodecyl primary amine and absolute ethyl alcohol into a beaker in sequence, heating in a 45 ℃ water bath, stirring for 30min at a rotating speed of 120r/min, dropwise adding ethylene oxide, controlling the dropwise adding time to be 5min, stirring for 10min at a constant speed after the dropwise adding is finished, adding a dilute hydrochloric acid aqueous solution with the mass fraction of 10%, heating to 70 ℃, magnetically stirring for 3h, transferring to a vacuum drying oven, controlling the vacuum degree to be-0.10 MPa and the temperature to be 90 ℃, drying until the solvent is completely evaporated, preparing a compound A, and controlling the amount ratio of the dodecyl primary amine, the ethylene oxide and the dilute hydrochloric acid to be 1: 2: 0.3;
and S2, adding the compound A prepared in the step S1, half toluene and one third boric acid into a three-neck flask, magnetically stirring and heating to 100 ℃, introducing nitrogen, adding the rest boric acid into the rest toluene, magnetically stirring for 10min, then dripping into the three-neck flask, controlling the dripping time to be 55min, then carrying out reduced pressure distillation until the toluene is evaporated out, and preparing the antistatic filler, wherein the mass ratio of the compound A, the toluene and the boric acid is controlled to be 1: 10: 2.
Comparative example 1
This comparative example compared to example 1, the polyurethane elastomer of the present invention was replaced with a polyurethane elastomer prepared according to the prior art.
Comparative example 2
This comparative example compares to example 1 without the addition of an antistatic filler.
Comparative example 3
This comparative example is an elastomer insulated automotive cable in the market.
Tensile strength, tensile strength and elongation at break of examples 1 to 4 and comparative examples 1 to 3 were measured, and the results are shown in the following table;
as can be seen from the above table, the tensile strength of examples 1-4 was 23.0-23.2MPa, the elongation at break was 310-320%, the tensile strength of comparative examples 1-3 was 280-290MPa, and the elongation at break was 280-290%; therefore, in the third step, the second intermediate and the diphenylmethane diisocyanate are mixed in the activated ethylene glycol, and the polyethylene glycol is added to prepare the polyurethane elastomer, so that the dosage of the isocyanate can be reduced by adding the second intermediate in the preparation process of the polyurethane elastomer, and the traditional mode of preparing polyurethane by using petroleum is avoided.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is illustrative and explanatory only and is not intended to be exhaustive or to limit the invention to the precise embodiments described, and various modifications, additions, and substitutions may be made by those skilled in the art without departing from the scope of the invention or exceeding the scope of the claims.
Claims (5)
1. The elastomer-insulated automobile cable is characterized by comprising the following raw materials in parts by weight: 55-75 parts of polyurethane elastomer, 1-5 parts of antistatic filler, 3-5 parts of lubricant, 25-30 parts of plasticizer and 0.5-1 part of nano silicon dioxide;
the elastomer insulated cable for the automobile is prepared by the following method:
adding a polyurethane elastomer, an antistatic filler, a lubricant, a plasticizer and nano silicon dioxide into a mixing roll for mixing, controlling the mixing time to be 5-8min, then shearing and granulating by a double-screw extruder, controlling the temperature of a feeding section in the double-screw extruder to be 140-150 ℃, the temperature of a compression section to be 150-160 ℃, the temperature of a homogenizing section to be 160-170 ℃, then transferring to a vulcanizing machine for vulcanizing and pressing, controlling the temperature of the vulcanizing machine to be 175-185 ℃, the pressure to be 15-18MPa, and the pressing time to be 5-8min to obtain a cable material, and then coating the cable material on the surface of a conductor to obtain the elastomer insulated automobile cable.
2. The elastomer-insulated automotive cable of claim 1, wherein said lubricant is one or both of stearic acid and butyl stearate mixed in any ratio, and said plasticizer is one or both of phthalate and alkylsulfonate mixed in any ratio.
3. The elastomer-insulated automotive cable of claim 1, wherein the polyurethane elastomer is made by a process comprising:
firstly, sequentially adding methyl linoleate and erythritol into a three-neck flask, uniformly mixing, adding sodium carbonate, heating by using a 150-DEG C160-DEG C oil bath, stirring for 4 hours at the rotating speed of 120r/min, standing for 2 hours after stirring is finished, centrifugally separating dissolved sodium carbonate, then placing into a rotary evaporator, rotatably evaporating for 30 minutes at the temperature of 50-55 ℃ and under the pressure of 0.01MPa, then adding a 2mol/L dilute hydrochloric acid solution to remove the sodium carbonate which is not completely removed, washing to be neutral by using deionized water, and then evaporating for 10 minutes at the temperature of 85-95 ℃ and under the pressure of 0.01MPa to obtain a first intermediate;
secondly, adding the first intermediate and dimethyl carbonate prepared in the first step into a three-neck flask, uniformly mixing, adding triethylamine, introducing nitrogen, placing the mixture into an oil bath at 90-100 ℃, stirring the mixture for 2 hours at the rotating speed of 120r/min, taking the mixture out after the stirring is finished, evaporating and removing unreacted triethylamine and dimethyl carbonate under the conditions that the temperature is 50-55 ℃ and the pressure is 0.01MPa, and washing the mixture to be neutral by deionized water to prepare a second intermediate;
and thirdly, adding the prepared second intermediate into a three-neck flask, heating to 55-60 ℃, carrying out vacuum dehydration and degassing for 2h, then cooling to 30-35 ℃, introducing nitrogen, adding an activated ethylene glycol solution with the volume fraction of 15%, uniformly mixing, adding diphenylmethane diisocyanate, stirring at the rotating speed of 420-450r/min for 10min, adding polyethylene glycol, reacting at the temperature for 2h to obtain a prepolymer, then carrying out evaporation concentration for 15min, and curing at 55-60 ℃ for 4h to obtain a polyurethane elastomer, wherein the mass ratio of the second intermediate, the ethylene glycol, the diphenylmethane diisocyanate and the polyethylene glycol is controlled to be 2: 1.
4. An elastomer-insulated automotive cable according to claim 3, characterized in that the mass ratio of the methyl linoleate to the butanetetraol mass is controlled to be 1: 2-3 in the first step, the amount of sodium carbonate is 0.8% -1% of the mass sum of the methyl linoleate and the butanetetraol mass, the mass ratio of the first intermediate to the dimethyl carbonate mass is controlled to be 1: 2 in the second step, and the amount of triethylamine is 05% -0.6% of the mass sum of the first intermediate and the dimethyl carbonate mass.
5. An elastomer-insulated automotive cable according to claim 1, characterized in that said antistatic filler is made by the following method:
step S1, adding dodecyl primary amine and absolute ethyl alcohol into a beaker in sequence, heating in a water bath at 45-50 ℃, stirring for 30min at a rotating speed of 120r/min, dropwise adding ethylene oxide, controlling the dropwise adding time to be 5min, stirring for 10min at a constant speed after the dropwise adding is finished, adding a dilute hydrochloric acid aqueous solution with the mass fraction of 10%, heating to 70-75 ℃, magnetically stirring for 3h, transferring to a vacuum drying oven, controlling the vacuum degree to be-0.10 MPa and the temperature to be 90-95 ℃, drying until a solvent is completely evaporated, and preparing a compound A, wherein the amount ratio of the dodecyl primary amine to the ethylene oxide to the dilute hydrochloric acid is controlled to be 1: 2: 0.3-0.5;
and S2, adding the compound A prepared in the step S1, half toluene and one third boric acid into a three-neck flask, magnetically stirring and heating to 100-110 ℃, introducing nitrogen, adding the remaining boric acid into the remaining toluene, magnetically stirring for 10min, then dripping into the three-neck flask, controlling the dripping time to be 55-60min, then carrying out reduced pressure distillation until the toluene is evaporated out, and preparing the antistatic filler, wherein the mass ratio of the compound A, the toluene and the boric acid is controlled to be 1: 10: 2-3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010873157.0A CN111961334A (en) | 2020-08-26 | 2020-08-26 | Elastomer insulation cable for automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010873157.0A CN111961334A (en) | 2020-08-26 | 2020-08-26 | Elastomer insulation cable for automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111961334A true CN111961334A (en) | 2020-11-20 |
Family
ID=73389838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010873157.0A Pending CN111961334A (en) | 2020-08-26 | 2020-08-26 | Elastomer insulation cable for automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111961334A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113150534A (en) * | 2021-05-25 | 2021-07-23 | 东营海瑞宝新材料有限公司 | Solvent-free environment-friendly SPUA material and preparation method thereof |
| CN114854146A (en) * | 2022-05-24 | 2022-08-05 | 广东安拓普聚合物科技有限公司 | High-thermal-conductivity elastomer applied to new energy charging pile cable and preparation method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106221195A (en) * | 2016-08-31 | 2016-12-14 | 安徽楚江高新电材有限公司 | A kind of acid and alkali-resistance Antistatic type cable material and preparation method thereof |
| CN108794791A (en) * | 2018-05-21 | 2018-11-13 | 南京宜凯瑞新材料有限公司 | A kind of anti-static thermoplastic polyurethane elastomer |
| CN111320800A (en) * | 2020-04-08 | 2020-06-23 | 安徽松泰包装材料有限公司 | Antistatic PE film and preparation process thereof |
-
2020
- 2020-08-26 CN CN202010873157.0A patent/CN111961334A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106221195A (en) * | 2016-08-31 | 2016-12-14 | 安徽楚江高新电材有限公司 | A kind of acid and alkali-resistance Antistatic type cable material and preparation method thereof |
| CN108794791A (en) * | 2018-05-21 | 2018-11-13 | 南京宜凯瑞新材料有限公司 | A kind of anti-static thermoplastic polyurethane elastomer |
| CN111320800A (en) * | 2020-04-08 | 2020-06-23 | 安徽松泰包装材料有限公司 | Antistatic PE film and preparation process thereof |
Non-Patent Citations (2)
| Title |
|---|
| 刘益军: "《聚氨酯原料及助剂手册》", 30 April 2005, 化学工业出版社 * |
| 张泓: "植物油基聚氨酯弹性体及前驱体的合成及性能研究", 《中国优秀博硕士学位论文全文数据库（硕士） 工程科技I辑》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113150534A (en) * | 2021-05-25 | 2021-07-23 | 东营海瑞宝新材料有限公司 | Solvent-free environment-friendly SPUA material and preparation method thereof |
| CN114854146A (en) * | 2022-05-24 | 2022-08-05 | 广东安拓普聚合物科技有限公司 | High-thermal-conductivity elastomer applied to new energy charging pile cable and preparation method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111961334A (en) | Elastomer insulation cable for automobile | |
| CN110105716B (en) | High-efficiency flame-retardant alicyclic epoxy resin outdoor insulator castable | |
| CN1223628C (en) | Silicon alkyl cross bonding polyethylene fire-retardancy insulating plastics | |
| CN101781419A (en) | Organosilane crosslinked polyethylene insulation material for 20kV cable and preparation method thereof | |
| CN101255247A (en) | Boiling-free silicane cross-linking polyolefin composition | |
| CN113736203A (en) | Cross-linked polyethylene cable insulating material containing high-voltage-resistant performance compounding agent and preparation method thereof | |
| CN111748162B (en) | Heat-conducting PVC composition and preparation method thereof | |
| CN116206827A (en) | Production method of flame-retardant cable | |
| CN115746445A (en) | Halogen-free low-smoke flame-retardant polyolefin sheath material and preparation method thereof | |
| CN112321955A (en) | Environment-friendly flame-retardant insulating rubber composite material and preparation method thereof | |
| CN111961274A (en) | Insulating material for photovoltaic cable and preparation method thereof | |
| CN113637258A (en) | Silane crosslinked polyethylene insulating material with 70-year service life and preparation method thereof | |
| CN108841103A (en) | A kind of colloidal sol crosslinking pdu wire harness sheath material and preparation method thereof | |
| CN111793314A (en) | Irradiation crosslinking low-smoke halogen-free flame-retardant fire-resistant insulated wire | |
| CN117024948A (en) | TPU (thermoplastic polyurethane) base material for high-temperature-resistant cable sheath and preparation method thereof | |
| KR20070073614A (en) | A method of cross-linking a filled polymer based on polyethylene | |
| CN113736183B (en) | Anti-seismic low-smoke halogen-free flame-retardant cable sheath material and preparation method and application thereof | |
| CN114864163A (en) | High-temperature-resistant flame-retardant cable | |
| CN114864195B (en) | Novel halogen-free low-smoke flame-retardant photovoltaic cable manufacturing method | |
| CN112011133A (en) | High-life high-elasticity salt-fog-resistant mildew-resistant chemically-crosslinked chlorinated polyethylene sheath material and preparation method thereof | |
| CN116814017B (en) | High-voltage wire cable material for new energy automobile and preparation method thereof | |
| CN111100371A (en) | Homo-polypropylene material for power cable and preparation method thereof | |
| CN115216116B (en) | Environment-friendly hole plugging resin and resin hole plugging method | |
| CN114702813B (en) | Oil-resistant and solvent-resistant rubber composite material, preparation method thereof and application thereof in cables | |
| CN115536952B (en) | Strippable material for rubber jacketed cable 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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201120 |