CN114989511A - Environment-friendly slow-release low-smoke halogen-free flame-retardant cable and preparation method thereof - Google Patents

Environment-friendly slow-release low-smoke halogen-free flame-retardant cable and preparation method thereof Download PDF

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Publication number
CN114989511A
CN114989511A CN202210703573.5A CN202210703573A CN114989511A CN 114989511 A CN114989511 A CN 114989511A CN 202210703573 A CN202210703573 A CN 202210703573A CN 114989511 A CN114989511 A CN 114989511A
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fixedly connected
environment
belt pulley
mixing
oil
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CN114989511B (en
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李应钦
罗旭琴
林聪智
高桂斌
张佳武
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Guangdong Nanyang Cable Co ltd
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Guangdong Nanyang Cable Co ltd
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B13/00—Conditioning or physical treatment of the material to be shaped
    • B29B13/06—Conditioning or physical treatment of the material to be shaped by drying
    • B29B13/065—Conditioning or physical treatment of the material to be shaped by drying of powder or pellets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/002—Methods
    • B29B7/005—Methods for mixing in batches
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
    • B29B7/06—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices
    • B29B7/10—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary
    • B29B7/12—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with single shaft
    • B29B7/16—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with single shaft with paddles or arms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/80—Component parts, details or accessories; Auxiliary operations
    • B29B7/88—Adding charges, i.e. additives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
    • B29C48/154—Coating solid articles, i.e. non-hollow articles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/003—Apparatus or processes specially adapted for manufacturing conductors or cables using irradiation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
    • H01B13/24—Sheathing; Armouring; Screening; Applying other protective layers by extrusion
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
    • H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
    • H01B3/441—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from alkenes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/29—Protection against damage caused by extremes of temperature or by flame
    • H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2217—Oxides; Hydroxides of metals of magnesium
    • C08K2003/2224—Magnesium hydroxide
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/38—Boron-containing compounds
    • C08K2003/387—Borates
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/02—Flame or fire retardant/resistant
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/22—Halogen free composition
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00—Adapting or protecting infrastructure or their operation
    • Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables

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Abstract

The invention discloses an environment-friendly slow-release low-smoke halogen-free flame-retardant cable and a preparation method thereof, and the technical scheme is as follows: mix the base including heat, heat mixes base top fixedly connected with mixing drum and motor, the motor output shaft runs through to heat mix inside the base, mixing drum internally mounted has the (mixing) shaft, and an environment-friendly slow-release type low smoke and zero halogen flame retarded cable and preparation method beneficial effect are: through adding the rat repelling agent in the cable sheath raw materials, through the multiple stimulation of the chinese hawthorn fruit oil, camphor oil and capsaicin in the rat repelling agent to the mouse from sense of smell and taste, fundamentally reduces the wish that the mouse gnaws the cable, realizes the rat repelling effect, and has no adverse effect on the environment, the fixed effect of smell can be played to the hydrogenation rosin methyl ester, guarantees that the smell of the rat repelling agent slowly releases, in addition, the cable sheath still can accelerate the molecular diffusion under the heat of the internal conductor, makes the rat repelling effect further strengthen in the cable use.

Description

Environment-friendly slow-release low-smoke halogen-free flame-retardant cable and preparation method thereof
Technical Field
The invention relates to the technical field of cable preparation, in particular to an environment-friendly slow-release low-smoke halogen-free flame-retardant cable and a preparation method thereof.
Background
The low-smoke halogen-free flame-retardant cable is characterized in that the wrapping layer material of the cable does not contain halogen substances, halogen-containing gas is not released under the condition of combustion, the smoke concentration is low, and a halogen-free flame retardant is added into the wrapping layer material, so that the flame spread on the cable during the cable combustion is only in a limited range and is automatically extinguished, namely the cable has the capability of preventing or delaying the flame from occurring or spreading; the flame retardant and environmental protection performance of the existing cable is gradually enhanced, however, except for water, fire, temperature and other factors, the mouse also becomes an important factor for cable damage, the mouse is a rodent, and the teeth grow rapidly, so the mouse has the physiological habit of biting objects and wearing the teeth, the odor and hardness of the cable make the cable become a common object for biting, and the field mouse or the family mouse often gnaws the cable to cause failure events, thereby causing great economic loss and inconvenience brought to life.
The existing cable rat-proof measures mainly comprise the following two measures: firstly, the pipeline where the cable is located is sealed, mice are prevented from contacting the cable, and mouse catching and repelling medicines or equipment are arranged, so that the problem that the mice bite the cable cannot be fundamentally solved; secondly, the rat-proof effect is realized by arranging an armor or rat-repelling outer layer, but the processing technology of the cable is complex, the cost is high, and the mechanical property of the cable is influenced.
Therefore, the invention is necessary to invent the environment-friendly slow-release low-smoke halogen-free flame-retardant cable and the preparation method thereof.
Disclosure of Invention
Therefore, the invention provides an environment-friendly slow-release low-smoke halogen-free flame-retardant cable and a preparation method thereof, the mouse repellent is added into the raw material of the cable sheath, and the consciousness oil, camphor oil and capsaicin in the mouse repellent can stimulate mice in smell and taste, so that the willingness of mice to bite the cable is fundamentally reduced, the mouse repellent effect is realized, and no adverse effect is caused to the environment.
In order to achieve the above purpose, the invention provides the following technical scheme: the utility model provides an environment-friendly slowly-releasing type low smoke and zero halogen flame retarded cable, includes inside conductor and outside cable sheath, the raw materials components of cable sheath are: 50-60 parts of polyolefin, 3-8 parts of hydrated zinc borate, 38-42 parts of magnesium hydroxide, 18-26 parts of white carbon black, 1-3 parts of dibasic lead stearate, 3-8 parts of stearic acid amide, 10760.3-0.8 part of antioxidant and 4-6 parts of rat repellent.
Preferably, the rodenticide is litsea cubeba oil: camphor oil: capsaicin: hydrogenated rosin methyl ester: the proportion of the emulsifier is 1: 0.12-0.4:0.08-0.25: 0.10-0.15: 0.05-0.12 of mixed powder.
A preparation method of an environment-friendly slow-release low-smoke halogen-free flame-retardant cable comprises the following steps:
s1, putting the polyolefin, dibasic lead stearate, hydrated zinc borate, magnesium hydroxide, white carbon black, the rat repelling agent, the antioxidant 1076 and the stearamide into a hot mixer according to the sequence of temperature from low to high, mixing, feeding the mixed material into a cold mixer at 125 ℃, and discharging at the temperature below 45 ℃ to obtain the mixed material;
s2, adding the mixture obtained in the step S1 into an internal mixer for internal mixing to obtain a mixed material mass;
s3, extruding and granulating the mixture block obtained in the step S2 through a first extruder to obtain material particles;
s4, extruding the pellets obtained in the step S3 through a second extruder to obtain strands;
s5, crosslinking the wire rod obtained in the step S4 through the irradiation of an electron accelerator to obtain the cable sheath.
A device for preparing an environment-friendly slow-release low-smoke halogen-free flame-retardant cable comprises a hot mixer base, wherein a mixing cylinder and a motor are fixedly connected to the top of the hot mixer base, a motor output shaft penetrates into the hot mixer base, a mixing shaft is installed in the mixing cylinder, a first stirring rod is fixedly connected to the stirring shaft, the bottom end of the stirring shaft extends into the hot mixer base and is connected with the motor output shaft through a first transmission piece, a first oil cavity is formed in the side wall of the mixing cylinder, an annular partition plate and a first spiral partition plate are fixedly connected to the inner wall of the first oil cavity, the annular partition plate is positioned at the top of the first spiral partition plate, a drying cylinder is fixedly connected to the side wall of the mixing cylinder, a feeding funnel is fixedly connected to the top of the drying cylinder, a cover plate is arranged at the top of the feeding funnel, and the cover plate is connected with the feeding funnel through a claw bolt, the drying cylinder is characterized in that a second oil cavity is formed in the side wall of the drying cylinder, a second spiral partition plate is fixedly connected to the inner wall of the second oil cavity, a connecting pipe is fixedly connected between the drying cylinder and the mixing cylinder, two ends of the connecting pipe are respectively communicated with the first oil cavity and the second oil cavity, a conveying pipe is fixedly connected between the drying cylinder and the mixing cylinder, the conveying pipe is communicated with the inner cavity of the mixing cylinder and the inner cavity of the drying cylinder, a valve is fixedly mounted on the conveying pipe, a box body is fixedly connected to the top of the drying cylinder, a stirring assembly is arranged in the drying cylinder, and an air exhaust assembly is arranged inside the box body.
Preferably, the stirring subassembly includes the vertical axis, the vertical axis bottom run through the hot base roof of mixing and with hot base roof swing joint that mixes, the vertical axis bottom is through second driving medium and motor output shaft, the vertical axis top runs through the drying cylinder and extends to inside the box body, the vertical axis and the equal swing joint of drying cylinder diapire and roof, the epaxial fixedly connected with second puddler of vertical, the second puddler is located the drying cylinder.
Preferably, the subassembly of bleeding includes piston cylinder, piston, push rod, crank axle, worm wheel and worm, piston cylinder and dry section of thick bamboo top wall fixed connection, the crank axle both ends all with box body inner wall swing joint, the piston is located the piston cylinder, the piston top is articulated with the push rod bottom, push rod top and crank axle swing joint, worm fixed connection is on the vertical axis top, worm top and box body roof swing joint, worm wheel fixed connection is on the crank axle, worm wheel and worm meshing, piston cylinder diapire fixedly connected with intake pipe, the intake pipe bottom runs through to the dry section of thick bamboo in, piston cylinder lateral wall fixedly connected with outlet duct, the outlet duct runs through to the box body outside.
Preferably, the air inlet pipe is fixedly connected with a first one-way valve, and the air outlet pipe is fixedly connected with a second one-way valve.
Preferably, the first transmission piece comprises a first belt pulley and a second belt pulley, the first belt pulley is fixedly connected to the output shaft of the motor, the second belt pulley is fixedly connected to the stirring shaft, and the second belt pulley is connected with the first belt pulley through a first belt.
Preferably, the second driving medium includes third belt pulley and fourth belt pulley, third belt pulley fixed connection is on motor output shaft, fourth belt pulley fixed connection is in vertical axis bottom, the fourth belt pulley passes through second belt and fourth belt pulley.
Preferably, an oil inlet pipe is fixedly connected to the outer wall of the mixing cylinder and communicated with the first oil cavity, an oil outlet pipe is fixedly connected to the outer wall of the drying cylinder and communicated with the second oil cavity.
The embodiment of the invention has the following advantages:
1. the rat repelling agent is added into the raw material of the cable sheath, and the granary oil, camphor oil and capsaicin in the rat repelling agent can stimulate rats in sense of smell and taste, so that the willingness of the rats to bite the cable is reduced fundamentally, the rat repelling effect is realized, no adverse effect is caused to the environment, the hydrogenated rosin methyl ester can play a role in fixing the odor, the odor of the rat repelling agent is ensured to be released slowly, and in addition, the cable sheath can accelerate the molecular diffusion under the heat of an internal conductor, so that the rat repelling effect in the use process of the cable is further enhanced;
2. through set up the drying cylinder on the compounding device is used in the cable preparation, and set up the subassembly and the stirring subassembly of bleeding in the drying cylinder, can carry out predrying with all kinds of auxiliaries in the raw materials mixing stage, reduce the water content in the auxiliary agent, guarantee the quality of mixing material, the auxiliary agent intensifies the postmix simultaneously, be favorable to the resin to the absorption of auxiliary agent, improve mixing efficiency, in addition, add the auxiliary agent through the drying cylinder in to the mixing cylinder and need not to open the mixing cylinder, the situation that the auxiliary agent runs off along with the air has been reduced, waste is reduced, the cable preparation process has been optimized.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, the proportions, the sizes, and the like shown in the specification are only used for matching with the contents disclosed in the specification, so that those skilled in the art can understand and read the present invention, and do not limit the conditions for implementing the present invention, so that the present invention has no technical essence, and any modifications of the structures, changes of the proportion relation, or adjustments of the sizes, should still fall within the scope of the technical contents disclosed in the present invention without affecting the efficacy and the achievable purpose of the present invention.
FIG. 1 is a schematic view of the overall structure provided by the present invention;
fig. 2 is a schematic structural view of a first transmission member provided in the present invention;
FIG. 3 is a schematic view of a partial cross-sectional view of the present invention;
FIG. 4 is an enlarged view of the portion A of FIG. 3 according to the present invention;
FIG. 5 is a cross-sectional view of a dryer cartridge provided by the present invention;
FIG. 6 is a schematic view of a gas pumping assembly according to the present invention;
fig. 7 is a sectional view of a piston cylinder provided by the present invention.
In the figure: 1 a base of a hot mixer, 2 a mixing barrel, 3 a motor, 4 a stirring shaft, 5 a first stirring rod, 6 a first transmission piece, 61 a first belt pulley, 62 a second belt pulley, 63 a first belt, 7 a first oil chamber, 8 an annular partition plate, 9 a first spiral partition plate, 10 a drying barrel, 11 a feeding funnel, 12 a cover plate, 13 a claw bolt, 14 a second oil chamber, 15 a second spiral partition plate, 16 a connecting pipe, 17 a material conveying pipe, 18 a valve, 19 a box body, 20 a vertical shaft, 21 a second transmission piece, 211 a third belt pulley, 212 a fourth belt pulley, 213 a second belt, 22 a second stirring rod, 23 a piston barrel, 24 a piston, 25 a push rod, 26 a crank shaft, 27 a worm wheel, 28 a worm, 29 an air inlet pipe, 30 an air outlet pipe, 31 a first one-way valve, 32 a second one-way valve, 33 an oil inlet pipe and 34 an oil outlet pipe.
Detailed Description
The present invention is described in terms of specific embodiments, and other advantages and benefits of the present invention will become apparent to those skilled in the art from the following disclosure. 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:
the invention provides an environment-friendly slow-release low-smoke halogen-free flame-retardant cable, which comprises an internal conductor and an external cable sheath, wherein the cable sheath comprises the following raw material components: 55 parts of polyolefin, 5 parts of hydrated zinc borate, 40 parts of magnesium hydroxide, 22 parts of white carbon black, 2 parts of dibasic lead stearate, 6 parts of stearic acid amide, 10760.5 parts of antioxidant and 1 part of rodenticide, wherein the polyolefin has the characteristics of low relative density, good chemical resistance and water resistance, good mechanical strength, good electrical insulation property and the like, and the rodenticide is litsea cubeba oil: camphor oil: capsaicin: hydrogenated rosin methyl ester: the emulsifier ratio is 1: 0.25:0.15: 0.10:0.1, wherein the particle size of the hydrated zinc borate is set to be 5 mu m, the temperature of the devitrified water is set to be 320 ℃, the hydrated zinc borate can effectively improve the flame retardant property, reduce the generation of smoke during combustion, and can adjust the chemical, mechanical, electrical and other properties of rubber and plastic products, and has the characteristics of no toxicity, low water solubility, high thermal stability, small particle size, small specific gravity, good dispersibility and the like, the white carbon black is a porous substance, is high temperature resistant, non-combustible, tasteless and odorless, can be used as a reinforcing agent when being added into polyolefin, the dibasic lead stearate is used as a polyolefin stabilizer, is white powder, has the relative density of 2.15, the melting point of more than 280 ℃, the refractive index of 1.60, is insoluble in water, is a neutral granular solid, is used as a lubricant, is insoluble in water, is slightly soluble in an organic solvent at normal temperature, has good adhesiveness, and has the advantages of lubricity, mold release property, no hygroscopicity and the like, the antioxidant 1076 is used as an antioxidant of polyolefin, is white powder or particles, can effectively inhibit thermal degradation and oxidative degradation of polymers, and can fundamentally reduce the willingness of mice to bite cables by virtue of multiple stimulation of the granary oil, the camphor oil and the capsaicin to mice from smell and taste, so that the rat repelling effect is realized, no adverse effect is caused to the environment, the hydrogenated rosin methyl ester can play a role in odor fixation, and the odor of the rat repelling agent is ensured to be slowly released.
A preparation method of an environment-friendly slow-release low-smoke halogen-free flame-retardant cable comprises the following steps:
s1, putting polyolefin, dibasic lead stearate, hydrated zinc borate, magnesium hydroxide, white carbon black, a rat repellent, an antioxidant 1076 and stearic acid amide into a hot mixer according to the sequence of temperature from low to high, mixing, feeding the mixed material into a cold mixer at 125 ℃, and discharging at below 45 ℃ to obtain a mixed material;
s2, adding the mixture obtained in the step S1 into an internal mixer for internal mixing to obtain a mixed material mass;
s3, extruding and granulating the mixture block obtained in the step S2 through a first extruder to obtain material particles;
s4, extruding the pellets obtained in the step S3 through a second extruder to obtain strands;
s5, crosslinking the wire rod obtained in the step S4 through the irradiation of an electron accelerator to obtain the cable sheath.
Example 2:
the invention provides an environment-friendly slow-release low-smoke halogen-free flame-retardant cable which comprises an inner conductor and an outer cable protective layer, wherein the cable protective layer comprises the following raw material components: 55 parts of polyolefin, 5 parts of hydrated zinc borate, 40 parts of magnesium hydroxide, 22 parts of white carbon black, 2 parts of dibasic lead stearate, 6 parts of stearic acid amide, 10760.5 parts of antioxidant and 3 parts of rodenticide, wherein the polyolefin has the characteristics of low relative density, good chemical resistance and water resistance, good mechanical strength, good electrical insulation property and the like, and the rodenticide is litsea cubeba oil: camphor oil: capsaicin: hydrogenated rosin methyl ester: the proportion of the emulsifier is 1: 0.25:0.15: 0.11: 0.1.
A preparation method of an environment-friendly slow-release low-smoke halogen-free flame-retardant cable comprises the following steps:
s1, putting the polyolefin, dibasic lead stearate, hydrated zinc borate, magnesium hydroxide, white carbon black, the rat repelling agent, the antioxidant 1076 and the stearamide into a hot mixer according to the sequence of temperature from low to high, mixing, feeding the mixed material into a cold mixer at 125 ℃, and discharging at the temperature below 45 ℃ to obtain the mixed material;
s2, adding the mixture obtained in the step S1 into an internal mixer for internal mixing to obtain a mixed material mass;
s3, extruding and granulating the mixture block obtained in the step S2 through a first extruder to obtain material particles;
s4, extruding the pellets obtained in the step S3 through a second extruder to obtain strands;
s5, crosslinking the wire rod obtained in the step S4 through the irradiation of an electron accelerator to obtain the cable sheath.
Example 3:
the invention provides an environment-friendly slow-release low-smoke halogen-free flame-retardant cable which comprises an inner conductor and an outer cable protective layer, wherein the cable protective layer comprises the following raw material components: 55 parts of polyolefin, 5 parts of hydrated zinc borate, 40 parts of magnesium hydroxide, 22 parts of white carbon black, 2 parts of dibasic lead stearate, 6 parts of stearic acid amide, 10760.5 parts of antioxidant and 5 parts of rodenticide, wherein the polyolefin has the characteristics of low relative density, good chemical resistance and water resistance, good mechanical strength, good electrical insulation and the like, and the rodenticide is litsea cubeba oil: camphor oil: capsaicin: hydrogenated rosin methyl ester: the proportion of the emulsifier is 1: 0.25:0.15: 0.12: 0.1.
A preparation method of an environment-friendly slow-release low-smoke halogen-free flame-retardant cable comprises the following steps:
s1, putting polyolefin, dibasic lead stearate, hydrated zinc borate, magnesium hydroxide, white carbon black, a rat repellent, an antioxidant 1076 and stearic acid amide into a hot mixer according to the sequence of temperature from low to high, mixing, feeding the mixed material into a cold mixer at 125 ℃, and discharging at below 45 ℃ to obtain a mixed material;
s2, adding the mixture obtained in the step S1 into an internal mixer for internal mixing to obtain a mixed material mass;
s3, extruding and granulating the mixture block obtained in the step S2 through a first extruder to obtain material particles;
s4, extruding the pellets obtained in the step S3 through a second extruder to obtain strands;
s5, crosslinking the wire obtained in the step S4 through the irradiation of an electron accelerator to obtain the cable sheath.
Example 4:
the invention provides an environment-friendly slow-release low-smoke halogen-free flame-retardant cable which comprises an inner conductor and an outer cable protective layer, wherein the cable protective layer comprises the following raw material components: 55 parts of polyolefin, 5 parts of hydrated zinc borate, 40 parts of magnesium hydroxide, 22 parts of white carbon black, 2 parts of dibasic lead stearate, 6 parts of stearic acid amide, 10760.5 parts of antioxidant and 8 parts of rodenticide, wherein the polyolefin has the characteristics of low relative density, good chemical resistance and water resistance, good mechanical strength, good electrical insulation property and the like, and the rodenticide is litsea cubeba oil: camphor oil: capsaicin: hydrogenated rosin methyl ester: the emulsifier ratio is 1: 0.25:0.15: 0.15: 0.1.
A preparation method of an environment-friendly slow-release low-smoke halogen-free flame-retardant cable comprises the following steps:
s1, putting the polyolefin, dibasic lead stearate, hydrated zinc borate, magnesium hydroxide, white carbon black, the rat repelling agent, the antioxidant 1076 and the stearamide into a hot mixer according to the sequence of temperature from low to high, mixing, feeding the mixed material into a cold mixer at 125 ℃, and discharging at the temperature below 45 ℃ to obtain the mixed material;
s2, adding the mixture obtained in the step S1 into an internal mixer for internal mixing to obtain a mixed material mass;
s3, extruding and granulating the mixture block obtained in the step S2 through a first extruder to obtain material particles;
s4, extruding the pellets obtained in the step S3 through a second extruder to obtain strands;
s5, crosslinking the wire rod obtained in the step S4 through the irradiation of an electron accelerator to obtain the cable sheath.
The method of the above example 1-4 is respectively adopted to compare the mechanical properties, cable odor and post-experiment ratproof performance of the prepared environment-friendly slow-release low-smoke halogen-free flame-retardant cable, and the following data are obtained:
Figure BDA0003704540550000091
according to the table, in the practical use of the cables prepared in the embodiments 1 to 4, the rat repelling effect is stably improved along with the increase of the usage amount of the rat repelling agent, but when the hydrogenated rosin methyl ester in the rat repelling agent reaches the highest proportion, the odor of the hydrogenated rosin methyl ester covers and neutralizes the key odor of the litsea cubeba oil, the camphor oil and the capsaicin to a certain extent, but the rat repelling effect is reduced, and in conclusion, the cable prepared in the embodiment 3 has good mechanical properties and no peculiar smell on the premise of good rat repelling effect, and is optimal.
Referring to the attached drawings 1-7, the device for preparing the environment-friendly slow-release low-smoke halogen-free flame-retardant cable provided by the invention comprises a hot mixer base 1, wherein the top of the hot mixer base 1 is fixedly connected with a mixing cylinder 2 and a motor 3, an output shaft of the motor 3 penetrates into the hot mixer base 1, a stirring shaft 4 is arranged in the mixing cylinder 2, a first stirring rod 5 is fixedly connected onto the stirring shaft 4, the bottom end of the stirring shaft 4 extends into the hot mixer base 1 and is connected with the output shaft of the motor 3 through a first transmission piece 6, the first transmission piece 6 comprises a first belt pulley 61 and a second belt pulley 62, the first belt pulley 61 is fixedly connected onto the output shaft of the motor 3, the second belt pulley 62 is fixedly connected onto the stirring shaft 4, the second belt pulley 62 is connected with the first belt pulley 61 through a first belt 63, a first oil cavity 7 is arranged on the side wall of the mixing cylinder 2, an annular partition plate 8 and a first spiral partition plate 9 are fixedly connected onto the inner wall of the first oil cavity 7, the annular partition plate 8 is positioned at the top of the first spiral partition plate 9, the side wall of the mixing cylinder 2 is fixedly connected with a drying cylinder 10, the top of the drying cylinder 10 is fixedly connected with a feeding funnel 11, the top of the feeding funnel 11 is provided with a cover plate 12, the cover plate 12 is connected with the feeding funnel 11 through a claw bolt 13, the side wall of the drying cylinder 10 is provided with a second oil cavity 14, the inner wall of the second oil cavity 14 is fixedly connected with a second spiral partition plate 15, a connecting pipe 16 is fixedly connected between the drying cylinder 10 and the mixing cylinder 2, two ends of the connecting pipe 16 are respectively communicated with the first oil cavity 7 and the second oil cavity 14, a material conveying pipe 17 is also fixedly connected between the drying cylinder 10 and the mixing cylinder 2, the material conveying pipe 17 is communicated with the inner cavity of the mixing cylinder 2 and the inner cavity of the drying cylinder 10, a valve 18 is fixedly installed on the material conveying pipe 17, the top of the drying cylinder 10 is fixedly connected with a box body 19, a stirring assembly is arranged in the drying cylinder 10, and an air exhaust assembly is arranged in the box body 19;
in the present embodiment, by providing the drying cylinder 10 on the side wall of the mixing cylinder 2, the second oil chamber 14 on the side wall of the drying cylinder 10 communicates with the first oil chamber 7 on the side wall of the mixing cylinder 2, so as to realize the common heating, the motor 3 operates to drive the mixing drum 2 to operate and simultaneously drive the stirring component and the air exhaust component in the drying drum to operate, when the mixing drum 2 is used for mixing raw materials, the plastic additive to be mixed is firstly put into the drying drum 10 for drying, and finally the dried plastic additive is sent into the mixing drum 2 through the material conveying pipe 17, so that the water content in the additive can be reduced, the quality of the mixed materials can be ensured, meanwhile, the auxiliary agents are heated and then mixed, so that the absorption of resin to the auxiliary agents is facilitated, the mixing efficiency is improved, the auxiliary agents are added into the mixing cylinder 2 through the drying cylinder 10 without opening the mixing cylinder 2, the condition that the powdery auxiliary agents run off along with air is reduced, the waste is reduced, and the cable preparation process is optimized;
wherein, in order to realize the purpose of stirring the auxiliary agent, the device adopts the following technical scheme: the stirring component comprises a vertical shaft 20, the bottom end of the vertical shaft 20 penetrates through the top wall of the base 1 of the thermal mixer and is movably connected with the top wall of the base 1 of the thermal mixer, the bottom end of the vertical shaft 20 is connected with the output shaft of the motor 3 through a second transmission member 21, the second transmission member 21 comprises a third belt pulley 211 and a fourth belt pulley 212, the third belt pulley 211 is fixedly connected on the output shaft of the motor 3, the fourth belt pulley 212 is fixedly connected with the bottom end of the vertical shaft 20, the fourth belt pulley 212 is connected with the fourth belt pulley 212 through a second belt 213, the top end of the vertical shaft 20 penetrates through the drying cylinder 10 and extends into the box body 19, the vertical shaft 20 is movably connected with the bottom wall and the top wall of the drying cylinder 10, the vertical shaft 20 is fixedly connected with a second stirring rod 22, the second stirring rod 22 is positioned in the drying cylinder 10, in practical application, the motor 3 can drive the third belt pulley 211 to rotate when in operation, and further drive the fourth belt pulley 212 to rotate through the second belt 213, the fourth belt pulley 212 can drive the vertical shaft 20 to rotate, and the vertical shaft 20 drives the second stirring rod 22 to rotate when rotating, so that the plastic auxiliary agent is stirred, and the auxiliary agent is uniformly heated and dried;
wherein, in order to realize the purpose to the evacuation of drying cylinder 10, this device adopts following technical scheme to realize: the air extraction component comprises a piston cylinder 23, a piston 24, a push rod 25, a crank shaft 26, a worm wheel 27 and a worm 28, the piston cylinder 23 is fixedly connected with the top wall of the drying cylinder 10, two ends of the crank shaft 26 are movably connected with the inner wall of the box body 19, the piston 24 is positioned in the piston cylinder 23, the top of the piston 24 is hinged with the bottom of the push rod 25, the top of the push rod 25 is movably connected with the crank shaft 26, the worm 28 is fixedly connected with the top end of the vertical shaft 20, the top of the worm 28 is movably connected with the top wall of the box body 19, the worm wheel 27 is fixedly connected with the crank shaft 26, the worm wheel 27 is meshed with the worm 28, the bottom wall of the piston cylinder 23 is fixedly connected with an air inlet pipe 29, the bottom of the air inlet pipe 29 penetrates into the drying cylinder 10, the side wall of the piston cylinder 23 is fixedly connected with an air outlet pipe 30, the air outlet pipe 30 penetrates to the outside of the box body 19, the air inlet pipe 29 is fixedly connected with a first one-way valve 31, the air outlet pipe 30 is fixedly connected with a second one-way valve 32, in practical application, the first one-way valve 31 ensures that air can only enter the piston cylinder 23 from the drying cylinder 10, the second one-way valve 32 ensures that gas can only be output from the inside of the piston cylinder 23 to the outside of the piston cylinder 23, the vertical shaft 20 can drive the worm 28 at the top end to rotate when rotating under the action of the motor 3, the worm 28 drives the worm wheel 27 to rotate when rotating, and further drives the crank shaft 26 to rotate, the crank shaft 26 can drive the push rod 25 to reciprocate when rotating, and further pushes the piston 24 to reciprocate, the gas in the drying cylinder 10 can be sucked into the piston cylinder 23 through the gas inlet pipe 29 when the piston 24 moves upwards, the gas in the piston cylinder 23 can be output to the outside of the piston cylinder 23 through the gas outlet pipe 30 when the piston 24 moves downwards, and the gas pressure in the drying cylinder 10 can be reduced when the action is repeated, so that the vaporization speed can be increased, and the rapid drying is facilitated;
wherein, in order to realize pouring hot oil into the purpose in the mixed section of thick bamboo 2 lateral wall of case and the section of thick bamboo 10 lateral wall of drying, this device adopts following technical scheme to realize: an oil inlet pipe 33 is fixedly connected to the outer wall of the mixing cylinder 2, the oil inlet pipe 33 is communicated with the first oil chamber 7, an oil outlet pipe 34 is fixedly connected to the outer wall of the drying cylinder 10, the oil outlet pipe 34 is communicated with the second oil chamber 14, in practical application, the oil inlet pipe 33 and the oil outlet pipe 34 are both connected with a heat conduction oil heating system of an existing high-speed mixer, hot oil flows upwards along the first spiral partition plate 9 after entering the first oil chamber 7 through the oil inlet pipe 33, then enters the second oil chamber 14 through the connecting pipe 16, flows upwards along the second spiral partition plate 15, and finally is discharged from the oil outlet pipe 34, so that the mixing cylinder 2 and the drying cylinder 10 are synchronously heated.
The application process of the invention is as follows: when the invention is used, after part of raw materials to be mixed are added into the mixing cylinder 2, the cover plate 12 at the top of the feeding hopper 11 is opened, the auxiliary agent to be added is put into the drying cylinder 10, the cover plate 12 is closed, then the heat-conducting oil heating system is used for conveying the heat oil to the oil inlet pipe 33, the heat oil enters the first oil cavity 7, flows upwards along the first spiral clapboard 9, then enters the second oil cavity 14 through the connecting pipe 16, flows upwards along the second spiral clapboard 15, and finally is discharged back to the heat-conducting oil heating system from the oil outlet pipe 34, the process can uniformly heat the side walls of the mixing cylinder 2 and the drying cylinder 10 at the same time, the motor 3 is started, the motor 3 can operate to drive the first belt pulley 61 and the third belt pulley 211 to rotate, the first belt pulley 61 can drive the second belt pulley 62 to rotate through the first belt 63, and further drive the stirring shaft 4 and the first stirring rod 5 to rotate, the raw materials can be further mixed, meanwhile, the third belt pulley 211 rotates to drive the fourth belt pulley 212 to rotate through the second belt 213, the fourth belt pulley 212 rotates to drive the vertical shaft 20 to rotate, and further drive the second stirring rod 22 to stir the auxiliary agent in the drying cylinder 10, so that the auxiliary agent is uniformly heated, the vertical shaft 20 rotates to further drive the worm 28 at the top end to rotate, the worm 28 rotates to drive the worm wheel 27 to rotate, and further drive the crank shaft 26 to rotate, the push rod 25 can be driven to reciprocate when the crank shaft 26 rotates, the piston cylinder 23 can be driven to reciprocate up and down when the push rod 25 reciprocates, the gas in the drying cylinder 10 can be sucked into the piston cylinder 23 through the air inlet pipe 29 when the piston 24 moves up, the gas in the piston cylinder 23 can be discharged to the outside of the piston cylinder 23 through the air outlet pipe 30 when the piston 24 moves down, the air in the drying cylinder 10 can be discharged outwards continuously by the reciprocating motion of the piston 24, the air pressure in the drying cylinder 10 is gradually reduced so as to dry the auxiliary agent in the drying cylinder 10, when the auxiliary agent needs to be added into the raw material, the valve 18 on the conveying pipe 17 is opened, the auxiliary agent is input into the mixing cylinder 2 through the conveying pipe 17 under the action of the second stirring rod 22, after the auxiliary agent is completely input into the mixing cylinder 2, the valve 18 on the conveying pipe 17 can be closed, then the motor 3 is closed, the cover plate 12 is opened, another auxiliary agent to be added is placed into the drying cylinder 10, the operation is repeated, and the newly added auxiliary agent is dried while the material is mixed.
The above description is only a preferred embodiment of the present invention, and any person skilled in the art may modify the present invention or modify it into an equivalent technical solution by using the technical solution described above. Therefore, any simple modifications or equivalent replacements made according to the technical solution of the present invention belong to the protection scope of the present invention.

Claims (10)

1. The utility model provides an environment-friendly slowly-releasing type low smoke and zero halogen flame retarded cable, includes inside conductor and outside cable sheath, its characterized in that: the cable sheath comprises the following raw materials: 50-60 parts of polyolefin, 3-8 parts of hydrated zinc borate, 38-42 parts of magnesium hydroxide, 18-26 parts of white carbon black, 1-3 parts of dibasic lead stearate, 3-8 parts of stearic acid amide, 10760.3-0.8 part of antioxidant and 4-6 parts of rat repellent.
2. The environment-friendly slow-release low-smoke halogen-free flame-retardant cable according to claim 1, characterized in that: the rodenticide is litsea cubeba oil: camphor oil: capsaicin: hydrogenated rosin methyl ester: the proportion of the emulsifier is 1: 0.12-0.4:0.08-0.25: 0.10-0.15: 0.05-0.12 of mixed powder.
3. A method for preparing the environment-friendly slow-release low-smoke halogen-free flame-retardant cable according to claim 1 or 2, which is characterized in that: the method comprises the following steps:
s1, putting the polyolefin, dibasic lead stearate, hydrated zinc borate, magnesium hydroxide, white carbon black, the rat repelling agent, the antioxidant 1076 and the stearamide into a hot mixer according to the sequence of temperature from low to high, mixing, feeding the mixed material into a cold mixer at 125 ℃, and discharging at the temperature below 45 ℃ to obtain the mixed material;
s2, adding the mixture obtained in the step S1 into an internal mixer for internal mixing to obtain a mixed material mass;
s3, extruding and granulating the mixture block obtained in the step S2 through a first extruder to obtain material particles;
s4, extruding the pellets obtained in the step S3 through a second extruder to obtain strands;
s5, crosslinking the wire rod obtained in the step S4 through the irradiation of an electron accelerator to obtain the cable sheath.
4. An apparatus for preparing the environment-friendly slow-release low-smoke zero-halogen flame-retardant cable of claim 1 or 2, comprising a hot mixer base (1), characterized in that: the top of the hot mixer base (1) is fixedly connected with a mixing drum (2) and a motor (3), an output shaft of the motor (3) penetrates into the hot mixer base (1), a stirring shaft (4) is installed inside the mixing drum (2), a first stirring rod (5) is fixedly connected onto the stirring shaft (4), the bottom end of the stirring shaft (4) extends into the hot mixer base (1) and is connected with an output shaft of the motor (3) through a first transmission piece (6), a first oil cavity (7) is formed in the side wall of the mixing drum (2), an annular partition plate (8) and a first spiral partition plate (9) are fixedly connected onto the inner wall of the first oil cavity (7), the annular partition plate (8) is located at the top of the first spiral partition plate (9), a drying drum (10) is fixedly connected onto the side wall of the mixing drum (2), and a feeding funnel (11) is fixedly connected onto the top of the drying drum (10), the improved drying cylinder is characterized in that a cover plate (12) is arranged at the top of the feeding hopper (11), the cover plate (12) is connected with the feeding hopper (11) through a claw bolt (13), a second oil cavity (14) is formed in the side wall of the drying cylinder (10), a second spiral baffle plate (15) is fixedly connected to the inner wall of the second oil cavity (14), a connecting pipe (16) is fixedly connected between the drying cylinder (10) and the mixing cylinder (2), the two ends of the connecting pipe (16) are respectively communicated with the first oil cavity (7) and the second oil cavity (14), a material conveying pipe (17) is fixedly connected between the drying cylinder (10) and the mixing cylinder (2), the material conveying pipe (17) is communicated with the inner cavity of the mixing cylinder (2) and the inner cavity of the drying cylinder (10), a valve (18) is fixedly arranged on the material conveying pipe (17), a box body (19) is fixedly connected to the top of the drying cylinder (10), and a stirring assembly is arranged in the drying cylinder (10), an air exhaust assembly is arranged inside the box body (19).
5. The apparatus for preparing environment-friendly slow-release low-smoke halogen-free flame-retardant cable according to claim 4, characterized in that: the stirring subassembly includes vertical axis (20), vertical axis (20) bottom run through hot mixing machine base (1) roof and with hot mixing machine base (1) roof swing joint, vertical axis (20) bottom is passed through second driving medium (21) and is connected with motor (3) output shaft, vertical axis (20) top runs through drying cylinder (10) and extends to box body (19) inside, vertical axis (20) and the equal swing joint of drying cylinder (10) diapire and roof, fixedly connected with second puddler (22) on vertical axis (20), second puddler (22) are located drying cylinder (10).
6. The device for preparing the environment-friendly slow-release low-smoke halogen-free flame-retardant cable according to claim 5, characterized in that: the air extraction assembly comprises a piston cylinder (23), a piston (24), a push rod (25), a crank shaft (26), a worm wheel (27) and a worm (28), the piston cylinder (23) is fixedly connected with the top wall of the drying cylinder (10), both ends of the crank shaft (26) are movably connected with the inner wall of the box body (19), the piston (24) is positioned in the piston cylinder (23), the top of the piston (24) is hinged with the bottom end of the push rod (25), the top end of the push rod (25) is movably connected with the crank shaft (26), the worm (28) is fixedly connected with the top end of the vertical shaft (20), the top end of the worm (28) is movably connected with the top wall of the box body (19), the worm wheel (27) is fixedly connected on the crank shaft (26), the worm wheel (27) is meshed with the worm (28), the bottom wall of the piston cylinder (23) is fixedly connected with an air inlet pipe (29), and the bottom end of the air inlet pipe (29) penetrates into the drying cylinder (10), the piston cylinder (23) is fixedly connected with an air outlet pipe (30) on the side wall, and the air outlet pipe (30) penetrates through the box body (19).
7. The apparatus for preparing environment-friendly slow-release low-smoke halogen-free flame-retardant cable according to claim 6, characterized in that: the air inlet pipe (29) is fixedly connected with a first one-way valve (31), and the air outlet pipe (30) is fixedly connected with a second one-way valve (32).
8. The device for preparing the environment-friendly slow-release low-smoke halogen-free flame-retardant cable according to claim 4, is characterized in that: first transmission piece (6) include first belt pulley (61) and second belt pulley (62), first belt pulley (61) fixed connection is on motor (3) output shaft, second belt pulley (62) fixed connection is on (mixing) shaft (4), second belt pulley (62) are connected with first belt pulley (61) through first belt (63).
9. The device for preparing the environment-friendly slow-release low-smoke halogen-free flame-retardant cable according to claim 5, characterized in that: second driving medium (21) include third belt pulley (211) and fourth belt pulley (212), third belt pulley (211) fixed connection is on motor (3) output shaft, fourth belt pulley (212) fixed connection is in vertical axis (20) bottom, fourth belt pulley (212) are through second belt (213) and fourth belt pulley (212).
10. The device for preparing the environment-friendly slow-release low-smoke halogen-free flame-retardant cable according to claim 4, is characterized in that: mix a section of thick bamboo (2) outer wall fixedly connected with and advance oil pipe (33), advance oil pipe (33) and first oil chamber (7) intercommunication, a dry section of thick bamboo (10) outer wall fixedly connected with goes out oil pipe (34), go out oil pipe (34) and second oil chamber (14) intercommunication.
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CN214214354U (en) * 2020-10-19 2021-09-17 江西广源化工有限责任公司 Inorganic powder/organic resin mixing stirring device
CN216159573U (en) * 2021-09-17 2022-04-01 西安凯翔光电科技有限公司 Drying equipment for producing medical intermediate

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* Cited by examiner, † Cited by third party
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CN102919282A (en) * 2012-11-06 2013-02-13 崔大智 Rat repelling agent
CN105961446A (en) * 2016-05-14 2016-09-28 颜璐洁 Compound-type nano rodent repellent and use method thereof
CN109181052A (en) * 2018-07-18 2019-01-11 山东华能线缆有限公司 A kind of slow-release termite-resistant rodent-resistant cable jacket material
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CN214214354U (en) * 2020-10-19 2021-09-17 江西广源化工有限责任公司 Inorganic powder/organic resin mixing stirring device
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