CN111647237A - High-thermal-conductivity polyvinyl chloride sheath material for cable and cable - Google Patents

High-thermal-conductivity polyvinyl chloride sheath material for cable and cable Download PDF

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Publication number
CN111647237A
CN111647237A CN202010443018.4A CN202010443018A CN111647237A CN 111647237 A CN111647237 A CN 111647237A CN 202010443018 A CN202010443018 A CN 202010443018A CN 111647237 A CN111647237 A CN 111647237A
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crushing roller
machine body
rotating shaft
washboard
connecting rod
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CN202010443018.4A
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蒋欣雨
唐贤律
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Individual
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Priority to CN202010443018.4A priority Critical patent/CN111647237A/en
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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
    • C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
    • C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
    • C08L27/06—Homopolymers or copolymers of vinyl chloride
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C1/00—Crushing or disintegrating by reciprocating members
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C21/00—Disintegrating plant with or without drying of the material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C4/00—Crushing or disintegrating by roller mills
    • B02C4/02—Crushing or disintegrating by roller mills with two or more rollers
    • B02C4/08—Crushing or disintegrating by roller mills with two or more rollers with co-operating corrugated or toothed crushing-rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C4/00—Crushing or disintegrating by roller mills
    • B02C4/28—Details
    • B02C4/30—Shape or construction of rollers
    • 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
    • H01B3/443—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 vinylhalogenides or other halogenoethylenic compounds
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C2201/00—Codes relating to disintegrating devices adapted for specific materials
    • B02C2201/06—Codes relating to disintegrating devices adapted for specific materials for garbage, waste or sewage
    • 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
    • C08K3/02—Elements
    • C08K2003/026—Phosphorus
    • 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
    • C08K2003/222—Magnesia, i.e. magnesium oxide
    • 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
    • C08K2003/2227—Oxides; Hydroxides of metals of aluminium
    • 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
    • C08K2003/382—Boron-containing compounds and nitrogen
    • C08K2003/385—Binary compounds of nitrogen with boron
    • 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
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/02—Flame or fire retardant/resistant
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2203/00—Applications
    • C08L2203/20—Applications use in electrical or conductive gadgets
    • C08L2203/202—Applications use in electrical or conductive gadgets use in electrical wires or wirecoating

Abstract

The invention relates to a sheath material for a cable and a cable made of the sheath material, in particular to a high-thermal conductivity polyvinyl chloride sheath material for the cable and the cable, wherein the cable is made of the following materials in parts by mass: 50-55 parts of polyvinyl chloride resin, 5-6 parts of epoxy resin, 0.5-1 part of curing agent, 30-35 parts of heat conducting agent, 8-10 parts of heat conducting auxiliary material, 2-3 parts of antioxidant, 6-10 parts of flame retardant and 2-3 parts of smoke suppressor; the waste alumina ceramic of the heat conducting agent is obtained after treatment; the heat-conducting auxiliary material is a mixture of boron nitride and magnesium oxide; the antioxidant is an antioxidant 1010; the flame retardant is a mixture of sodium hydroxide, encapsulated red phosphorus and zinc borate; the smoke suppressor is ferrocene; the invention has low production cost and simple raw material acquisition, and simultaneously, the obtained sheath material has good thermal conductivity and good insulativity.

Description

High-thermal-conductivity polyvinyl chloride sheath material for cable and cable
Technical Field
The invention relates to a sheath material for a cable and a cable made of the sheath material, in particular to a high-thermal-conductivity polyvinyl chloride sheath material for the cable and the cable.
Background
The power cable has resistance because of its conductor material, and when the cable transmitted current, the resistance of conductor can produce the heat, and the more the heat that the conductor produced is more for the more electric current, and the conductor temperature also can rise, and the direct current resistance of temperature rising conductor still can increase, and the heat that the direct current resistance increase produced can be more, and the loss that conductor temperature rose and lead to in the electric energy transmission process accounts for about 15% of transmission electric energy about. Reducing the conductor temperature can reduce the loss of electrical energy, and therefore reducing the cable conductor temperature is of great significance. The important factor influencing the temperature of the conductor is the thermal resistance of materials around the conductor forming the cable structure, an insulating layer and a sheath layer are arranged outside the conductor, the insulating layer and the sheath layer are made of high-heat-resistance materials, the heat conductivity coefficient of the materials is very low and is generally 0.1-0.3W/mk, for example, the heat conductivity coefficient of common crosslinked polyethylene insulating layers and polyvinyl chloride sheath layer power cables is 0.2W/mk, the heat conductivity coefficient of polyvinyl chloride is 0.14W/mk, the cables work in the air, the air temperature is 20 ℃, when the temperature of the conductor reaches 90 ℃, the surface temperature of the cables is only 40 ℃, the temperature gradient from the conductor to the surface of the cables can reach 50 ℃, the heat dissipation is very poor, and the transmission electric energy is lost.
Some proposals exist in the prior art, for example, in chinese patent with application number 2018103856604, compared with the prior art, a heat conducting agent and an auxiliary heat conducting agent are added in polyvinyl chloride, because the heat conducting agent graphene or graphene oxide is a good conductive material, the auxiliary heat conducting agent is a good insulating material and has higher heat conductivity, the heat conducting agent and the auxiliary heat conducting agent are used in cooperation, the heat conductivity of the sheath layer material can be obviously improved to reach more than 0.3W/mk, the heat dissipation is better, the consumed transmission electric energy or the cable current-carrying capacity is reduced, but in the proposal, the used heat conducting material graphene is higher in price, has good electric conductivity, improves the heat conducting performance, reduces the insulation protection performance of the sheath material, and has poorer safety performance. Therefore, a high thermal conductivity polyvinyl chloride sheath material for cables, which has good thermal conductivity, low cost and good insulating property, is needed.
Disclosure of Invention
In order to make up for the defects of the prior art and solve the problems of high production cost and poor insulating property of the high-thermal-conductivity sheath material of the conventional cable, the invention provides the high-thermal-conductivity polyvinyl chloride sheath material for the cable and the cable.
The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a high-thermal-conductivity polyvinyl chloride sheath material for a cable, which is prepared from the following materials in parts by mass:
50-55 parts of polyvinyl chloride resin, 5-6 parts of epoxy resin, 0.5-1 part of curing agent, 30-35 parts of heat conducting agent, 8-10 parts of heat conducting auxiliary material, 2-3 parts of antioxidant, 6-10 parts of flame retardant and 2-3 parts of smoke suppressor;
the heat conducting agent is micron-grade alumina; the heat conducting agent is obtained by treating waste alumina ceramics; the heat conduction auxiliary material is a mixture consisting of boron nitride and magnesium oxide in the following proportion: 1: 1; the magnesium oxide has two particle sizes which are respectively 45 μm and 10 μm, and the proportion of the two particle sizes is as follows: 3: 2; the antioxidant is an antioxidant 1010; the flame retardant is a mixture consisting of sodium hydroxide, capsule red phosphorus and zinc borate, and comprises the following components in proportion: 2: 2: 1; the smoke suppressor is ferrocene;
the heat conducting agent is prepared by treating the recovered waste alumina ceramics, so that the purchase and production cost of raw materials is reduced, the total production cost of a final product is reduced, the problem of treatment of the waste alumina ceramics can be solved, the waste of the waste alumina ceramics can be utilized, and the resource utilization rate is improved; the performance of polyvinyl chloride can be effectively changed by adding a small amount of epoxy resin into the polyvinyl chloride resin, the strength of the polyvinyl chloride is improved, the use of the polyvinyl chloride is prolonged, and the use cost is reduced; the added boron nitride has excellent heat-conducting property, the heat conductivity of the product can be greatly improved within a certain range, the performance of the product is improved, the cost of raw materials is not increased due to the addition of more boron nitride, the heat conductivity of the product is ensured to be good, and the production cost is within an acceptable range; meanwhile, the added magnesium oxide with two particle sizes is mutually promoted in a finished product, so that the thermal conductivity of the magnesium oxide can be greatly improved, the performance of the product is improved, the cost is low, and meanwhile, after the boron nitride and the magnesium oxide are added into a resin system, the viscosity of the resin can be improved, the boron nitride and the magnesium oxide can also be used as thickening agents, so that the viscosity of the product in a molten state is improved, and the processing and forming are convenient; the added sodium hydroxide, the capsule red phosphorus and the zinc borate have mutual promotion effect, so that the flame retardant property can be effectively improved, and the excellent flame retardant property of the product is ensured; the added ferrocene can effectively eliminate smoke generated by the flame retardant when the flame retardant plays a flame-retardant role, so that a large amount of dense smoke is avoided when a fire occurs, and the safety of personnel is ensured;
the preparation method of the high-thermal-conductivity polyvinyl chloride sheath material for the cable comprises the following steps:
s1: preparing a heat conducting agent; putting the waste alumina ceramic serving as the raw material into a water tank, cleaning the waste alumina ceramic, and cleaning various magazines and dust existing on the surface of the raw material; then putting the cleaned raw materials into a processing device to obtain semi-finished product aluminum oxide powder; then, washing the semi-finished product of alumina powder with water, and drying to obtain a heat-conducting agent;
s2: preparing a product; putting polyvinyl chloride resin into a reaction kettle, heating until the polyvinyl chloride resin is molten, then sequentially putting the heat conducting agent prepared in the step S1 and other components into the reaction kettle according to a preset proportion, continuously stirring mixed raw materials in the reaction kettle in the process of putting the components, and simultaneously adding the next component after each component is fully stirred and completely mixed; after all the components are added, keeping the raw materials in the reaction kettle in a molten state, and continuously stirring for 10-20 min to obtain the finished high-thermal-conductivity polyvinyl chloride sheath material for the cable;
wherein, the processing device comprises a machine body and an upper cover; the upper cover is arranged above the machine body; a feeding port is formed in the middle of the upper cover; the machine body is hollow; a first crushing roller is mounted in the machine body through a first rotating shaft; a second crushing roller is arranged in the machine body through a second rotating shaft; the first crushing roller and the second crushing roller are positioned at the same height; a gap is formed between the first crushing roller and the second crushing roller; a third crushing roller is arranged in the machine body through a third rotating shaft; the three crushing rollers are positioned below the first crushing roller and the second crushing roller, and the distances between the third crushing roller and the first crushing roller and the second crushing roller are equal; a first cavity is formed in the side wall on the left side in the length direction of the machine body; a second cavity is formed in the side wall on the right side in the length direction of the machine body; two ends of the first rotating shaft, the second rotating shaft and the third rotating shaft are respectively inserted into the first cavity and the second cavity; one end of the rotating shaft III, which is inserted into the cavity I, extends out of the machine body; one ends of the first rotating shaft, the second rotating shaft and the third rotating shaft, which are positioned in the second cavity, are connected with each other through a transmission belt; a motor is fixedly arranged on the left side surface of the machine body; the output shaft of the motor is connected with one end of the rotating shaft, which is positioned outside the machine body, through a transmission belt; a crushing roller IV is arranged in the machine body through a rotating shaft IV; a crushing roller V is arranged in the machine body through a rotating shaft V; the fourth crushing roller and the fifth crushing roller are positioned at the same height; the fourth crushing roller and the fifth crushing roller are both positioned below the third crushing roller; a gap is formed between the fourth crushing roller and the fifth crushing roller; the first rotating shaft is connected with the fifth rotating shaft through a first hinge unit; the hinge unit is positioned in the first cavity; the first hinge unit comprises a first connecting rod, a second connecting rod and a third connecting rod; the first connecting rod is fixedly connected to the first rotating shaft; the tail end of the first connecting rod is connected with the second connecting rod through a hinge; the other end of the second connecting rod is connected with a third connecting rod through a hinge; the third connecting rod is fixedly connected with the fifth rotating shaft; the hinge units are divided into two groups and symmetrically distributed in the left side surface of the machine body; a material guide plate is fixedly arranged in the machine body; the number of the material guide plates is two, and the two material guide plates are symmetrically arranged in the machine body; the material guide plate is fixedly provided with a triangular block; the two triangular blocks are respectively arranged on two vertically opposite side surfaces of the material guide plate; the triangular blocks are right-angled triangles; the inclined surfaces of the two triangular blocks are opposite; the lower part of the triangular block is a flat plate; a support column is fixedly connected between the flat plate and the machine body; a first washboard is arranged in the machine body through a sixth rotating shaft; a second washboard is arranged in the machine body through a seventh rotating shaft; the first washboard and the second washboard are in a cuboid shape; the first washboard and the second washboard are vertically arranged, and the first washboard and the second washboard are positioned in the middle of the material guide plate; a cross rod is fixedly arranged on the rotating shaft III; the cross bar is positioned in the second cavity; the cross bar is connected with the rotating shaft II through a hinge unit II; the second hinge unit comprises a fourth connecting rod and a fifth connecting rod; one end of the fourth connecting rod is hinged to one end of the cross rod; the tail end of the connecting rod IV is connected with the connecting rod V through a hinge; the other end of the connecting rod V is connected with a rotating shaft VI through a hinge; the two connecting units are two groups, and the other group is connected with the other end of the cross rod and the rotating shaft seven;
when the device works, the motor is started, the motor drives the first crushing roller to start rotating, and the third crushing roller drives the first crushing roller and the second crushing roller to start rotating through the transmission belt; waste alumina ceramic as a raw material is put into a processing device through a feeding port, the waste alumina ceramic entering the processing device falls onto a first crushing roller and a second crushing roller and is crushed by the first crushing roller and the second crushing roller to become small particles, meanwhile, because the first crushing roller, the second crushing roller and a third crushing roller are connected through a transmission belt, the first crushing roller and the second crushing roller have the same rotating direction, the moving directions of the first crushing roller and the second crushing roller are inconsistent, the waste alumina ceramic is cut, the crushing process is accelerated, meanwhile, the inconsistent moving directions can relatively fix the raw material at the middle position of the first crushing roller and the second crushing roller, the movement of the raw material is prevented, the crushing efficiency is influenced, when the waste alumina ceramic is crushed into small particles and falls, because the crushing roller is positioned below the first crushing roller and the second crushing roller, the crushed small particles are subjected to the action of the crushing roller III again, the particles are continuously crushed, the particle size of the particles is smaller, meanwhile, multiple crushing effects can be generated by the crushing roller III, the particle size fineness of the particles generated after crushing is improved, the diameters of the particles are consistent, meanwhile, the crushing roller III can block the particles which fall from between the crushing roller I and the crushing roller II and are not completely crushed, the particles are fully crushed, and the quality of a final product is guaranteed; after the crushed particles pass through the third crushing roller, the particles are gathered by the guide plate, so that the crushed particles pass through the fourth crushing roller and the fifth crushing roller, and the fourth crushing roller and the fifth crushing roller are connected to the first rotating shaft through the hinge unit; when the particles pass through the fourth crushing roller and the fifth crushing roller, the particles reach a first rubbing plate and a second rubbing plate, the first rubbing plate and the second rubbing plate are connected to a cross rod through a hinge unit II, meanwhile, the cross rod is fixedly connected to a rotating shaft III, when the rotating shaft III rotates, the cross rod starts to rotate to drive the first rubbing plate and the second rubbing plate which are connected to start to move up and down, and due to the existence of the cross rod, the moving directions of the first rubbing plate and the second rubbing plate are opposite, so that the particles between the first rubbing plate and the second rubbing plate are subjected to a rubbing effect, and the diameters of the particles are further reduced until the target diameters are reached; after the crushed particles pass through the first washboard and the second washboard, the particles fall downwards to the bottom of the machine body and are collected, meanwhile, the diameter of the particles obtained after treatment meets the requirement under the action of the first washboard and the second washboard, and the particles with overlarge diameters are prevented from passing through and being mixed to influence the performance of the product.
Preferably, rectangular blocks are uniformly arranged on the surface of the first crushing roller; conical blocks are uniformly arranged on the surface of the first crushing roller; rectangular blocks are uniformly arranged on the surface of the second crushing roller; conical blocks are uniformly arranged on the surface of the second crushing roller; the rectangular blocks and the conical blocks on the surfaces of the first crushing roller and the second crushing roller are mutually staggered; rectangular blocks are uniformly arranged on the surface of the third crushing roller; conical blocks are uniformly arranged on the surface of the crushing roller III;
during operation, the rectangular blocks and the conical blocks can effectively extrude and crush the waste alumina ceramics, so that the crushing efficiency is ensured, meanwhile, the rectangular blocks and the conical blocks on the first crushing roller and the second crushing roller are arranged in a staggered manner, so that the waste alumina ceramics falling into the processing device can be tightly clamped, the ceramic blocks are prevented from flying out after being stressed and extruded in the crushing process and being crushed on a machine body, the crushing efficiency is influenced, and larger noise is generated, meanwhile, the conical blocks can extrude the ceramic blocks through tips in the crushing process, the cracking speed of the ceramic blocks is accelerated, the crushing pressure is reduced, the load of the processing device is reduced, the service life of the machine is prolonged, meanwhile, the rectangular blocks can fix the ceramic blocks to a certain degree, the conical blocks can be conveniently crushed, the crushing efficiency is accelerated, and meanwhile, the ceramic blocks are prevented from splashing inside the machine body, impact the machine body and generate larger noise.
Preferably, arc-shaped bulges are uniformly arranged on the surfaces of the left side and the right side of the washboard I; arc-shaped bulges are uniformly arranged on the surfaces of the left side and the right side of the washboard II; the first washboard and the second washboard are provided with arc-shaped bulges which correspond to each other; semicircular bulges are uniformly arranged on the partial surfaces of the triangular blocks, which are opposite to the first washboard and the second washboard; the left side and the right side of the upper ends of the first washboard and the second washboard are arc-shaped;
when the novel particle rubbing machine works, the arc-shaped protrusions arranged on the first rubbing board and the second rubbing board can effectively improve the friction force and extrusion force of two pairs of particles of the first rubbing board and the second rubbing board, the particle crushing effect and speed are improved, the diameters of the crushed particles are consistent, meanwhile, the arc-shaped protrusions can block the particles between the first rubbing board and the second rubbing board when the first rubbing board and the second rubbing board move relatively to rub, the staying time of the particles between the first rubbing board and the second rubbing board is prolonged, the crushing effect is improved, meanwhile, the left side and the right side of the upper ends of the first rubbing board and the second rubbing board are arc-shaped, so that the particles falling from the upper side can enter the middle of the first rubbing board and the second rubbing board more smoothly, and the particles are prevented from being accumulated on the first rubbing board and the second rubbing board.
Preferably, the inclined surface of the triangular block is uniformly provided with spherical bulges; grooves are uniformly formed in the surfaces of the fourth crushing roller and the fifth crushing roller; the groove is matched with the spherical bulge on the triangular block;
the during operation, because the globular arch that sets up on the inclined plane, the resistance that the granule received when passing through the inclined plane increases, delays the time that the granule passes through the inclined plane, increases the time that the granule received four crushing roller and five effects of crushing roller to promote the treatment effect, simultaneously, set up the recess on four crushing roller and five surfaces of crushing roller, can mutually support with globular arch, promote the granule crushing effect, further reduce the diameter of smashing the back granule, promote the performance of product.
Preferably, the machine body is provided with a rectangular hole; the rectangular hole is positioned on the right side surface of the machine body; a material receiving box is arranged in the machine body; a filter screen is arranged in the material receiving box; the material receiving box part is positioned in the rectangular hole; the material receiving box and the machine body are sealed; a handle is fixedly arranged on the material receiving box; the handle is positioned in the rectangular hole; the upper cover is provided with a material port cover plate; the material port cover plate is positioned on the feeding port; the body is in a negative pressure state in the production process;
the during operation, the organism is inside to keep sealed relatively with the outside, and noise and dust that the during operation produced in the organism are difficult to wear out, reduce noise and dust pollution, simultaneously, be in the negative pressure state in the production process and can effectually prevent that the organism from producing the dust and leaking, cause the pollution, simultaneously, the filter screen of setting in receiving the magazine can block partly unqualified granule of particle diameter, guarantees that the granule particle diameter that obtains is even unanimous to improve the performance of product.
A cable comprising a conductive core and a jacket; the sheath is made of the high-thermal-conductivity polyvinyl chloride sheath material for the cable obtained from any one of the above parts; the conductive wire core is positioned in the sheath.
The invention has the following beneficial effects:
1. according to the high-thermal-conductivity polyvinyl chloride sheath material for the cable and the cable, the waste alumina ceramic is recycled, so that the utilization efficiency of resources is effectively improved, the environmental pollution is reduced, the production cost is reduced, meanwhile, the insulation performance of the cable sheath is not influenced or improved under the condition that the thermal conductivity of the cable sheath material is improved, and the overall performance and safety of the cable sheath material are improved.
2. According to the high-thermal-conductivity polyvinyl chloride sheath material for the cable and the cable, the waste alumina ceramics can be subjected to multiple crushing through the plurality of crushing rollers arranged in the processing device, the diameter sign requirement of the obtained alumina powder is ensured, meanwhile, the noise and dust in the processing device are prevented from leaking out by keeping the machine body sealed and the working state in the machine body at negative pressure, the noise and dust pollution is avoided, and the comfort level of the working environment is improved.
Drawings
The invention will be further explained with reference to the drawings.
FIG. 1 is a front view of a treatment apparatus of the present invention;
FIG. 2 is a partial cross-sectional view taken in the transverse direction of FIG. 1;
FIG. 3 is a partial cross-sectional view taken longitudinally in FIG. 1;
FIG. 4 is a schematic structural view of a first crushing roller;
FIG. 5 is an enlarged view of a portion of FIG. 3 at A;
FIG. 6 is a flow chart of a method of the present invention;
in the figure: the material collecting device comprises a machine body 1, an upper cover 11, a material opening cover plate 111, a material feeding opening 112, a first cavity 12, a second cavity 13, a rectangular hole 14, a first crushing roller 2, a first rotating shaft 21, a first connecting rod 211, a second connecting rod 212, a third connecting rod 213, a second crushing roller 22, a second rotating shaft 221, a conical block 222, a rectangular block 223, a third crushing roller 23, a third rotating shaft 231, a cross rod 232, a fourth connecting rod 233, a fifth connecting rod 234, a motor 235, a fourth crushing roller 3, a fourth rotating shaft 31, a fifth crushing roller 32, a fifth rotating shaft 321, a material guide plate 4, a triangular block 41, a semicircular bulge 411, a support column 42, a material collecting box 5, a handle 51, a first rubbing plate 6, an arc-shaped bulge 61, a second rubbing plate 62.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1 to 6, the high thermal conductivity polyvinyl chloride sheath material for the cable of the present invention is prepared from the following materials in parts by mass:
50-55 parts of polyvinyl chloride resin, 5-6 parts of epoxy resin, 0.5-1 part of curing agent, 30-35 parts of heat conducting agent, 8-10 parts of heat conducting auxiliary material, 2-3 parts of antioxidant, 6-10 parts of flame retardant and 2-3 parts of smoke suppressor;
the heat conducting agent is micron-grade alumina; the heat conducting agent is obtained by treating waste alumina ceramics; the heat conduction auxiliary material is a mixture consisting of boron nitride and magnesium oxide in the following proportion: 1: 1; the magnesium oxide has two particle sizes which are respectively 45 μm and 10 μm, and the proportion of the two particle sizes is as follows: 3: 2; the antioxidant is an antioxidant 1010; the flame retardant is a mixture consisting of sodium hydroxide, capsule red phosphorus and zinc borate, and comprises the following components in proportion: 2: 2: 1; the smoke suppressor is ferrocene;
the heat conducting agent is prepared by treating the recovered waste alumina ceramics, so that the purchase and production cost of raw materials is reduced, the total production cost of a final product is reduced, the problem of treatment of the waste alumina ceramics can be solved, the waste of the waste alumina ceramics can be utilized, and the resource utilization rate is improved; the performance of polyvinyl chloride can be effectively changed by adding a small amount of epoxy resin into the polyvinyl chloride resin, the strength of the polyvinyl chloride is improved, the use of the polyvinyl chloride is prolonged, and the use cost is reduced; the added boron nitride has excellent heat-conducting property, the heat conductivity of the product can be greatly improved within a certain range, the performance of the product is improved, the cost of raw materials is not increased due to the addition of more boron nitride, the heat conductivity of the product is ensured to be good, and the production cost is within an acceptable range; meanwhile, the added magnesium oxide with two particle sizes is mutually promoted in a finished product, so that the thermal conductivity of the magnesium oxide can be greatly improved, the performance of the product is improved, the cost is low, and meanwhile, after the boron nitride and the magnesium oxide are added into a resin system, the viscosity of the resin can be improved, the boron nitride and the magnesium oxide can also be used as thickening agents, so that the viscosity of the product in a molten state is improved, and the processing and forming are convenient; the added sodium hydroxide, the capsule red phosphorus and the zinc borate have mutual promotion effect, so that the flame retardant property can be effectively improved, and the excellent flame retardant property of the product is ensured; the added ferrocene can effectively eliminate smoke generated by the flame retardant when the flame retardant plays a flame-retardant role, so that a large amount of dense smoke is avoided when a fire occurs, and the safety of personnel is ensured;
the preparation method of the high-thermal-conductivity polyvinyl chloride sheath material for the cable comprises the following steps:
s1: preparing a heat conducting agent; putting the waste alumina ceramic serving as the raw material into a water tank, cleaning the waste alumina ceramic, and cleaning various magazines and dust existing on the surface of the raw material; then putting the cleaned raw materials into a processing device to obtain semi-finished product aluminum oxide powder; then, washing the semi-finished product of alumina powder with water, and drying to obtain a heat-conducting agent;
s2: preparing a product; putting polyvinyl chloride resin into a reaction kettle, heating until the polyvinyl chloride resin is molten, then sequentially putting the heat conducting agent prepared in the step S1 and other components into the reaction kettle according to a preset proportion, continuously stirring mixed raw materials in the reaction kettle in the process of putting the components, and simultaneously adding the next component after each component is fully stirred and completely mixed; after all the components are added, keeping the raw materials in the reaction kettle in a molten state, and continuously stirring for 10-20 min to obtain the finished high-thermal-conductivity polyvinyl chloride sheath material for the cable;
wherein, the processing device comprises a machine body 1 and an upper cover 11; the upper cover 11 is arranged above the machine body 1; a feeding port 112 is formed in the middle of the upper cover 11; the machine body 1 is hollow; a crushing roller I2 is arranged in the machine body 1 through a rotating shaft I21; a second crushing roller 22 is arranged in the machine body 1 through a second rotating shaft 221; the first crushing roller 2 and the second crushing roller 22 are positioned at the same height; a gap exists between the first crushing roller 2 and the second crushing roller 22; a third crushing roller 23 is arranged in the machine body 1 through a third rotating shaft 231; the third crushing roller 23 is positioned below the first crushing roller 2 and the second crushing roller 22, and the distances between the third crushing roller 23 and the first crushing roller 2 and the second crushing roller 22 are equal; a first cavity 12 is formed in the side wall of the left side of the machine body 1 in the length direction; a second cavity 13 is formed in the side wall on the right side of the machine body 1 in the length direction; two ends of the first rotating shaft 21, the second rotating shaft 221 and the third rotating shaft 231 are respectively inserted into the first cavity 12 and the second cavity 13; one end of the rotating shaft III 231 inserted into the cavity I12 extends out of the machine body 1; one ends of the first rotating shaft 21, the second rotating shaft 221 and the third rotating shaft 231, which are positioned in the second cavity 13, are connected with each other through a transmission belt; a motor 235 is fixedly arranged on the left side surface of the machine body 1; the output shaft of the motor 235 is connected with one end of the rotating shaft III 231, which is positioned outside the machine body 1, through a transmission belt; a crushing roller IV 3 is arranged in the machine body 1 through a rotating shaft IV 31; a crushing roller five 32 is arranged in the machine body 1 through a rotating shaft five 321; the fourth crushing roller 3 and the fifth crushing roller 32 are positioned at the same height; the fourth crushing roller 3 and the fifth crushing roller 32 are both positioned below the third crushing roller 23; a gap exists between the fourth crushing roller 3 and the fifth crushing roller 32; the first rotating shaft 21 is connected with the fifth rotating shaft 321 through a first hinge unit; the hinge unit is positioned in the cavity I12; the first hinge unit comprises a first connecting rod 211, a second connecting rod 212 and a third connecting rod 213; the first connecting rod 211 is fixedly connected to the first rotating shaft 21; the tail end of the first connecting rod 211 is connected with the second connecting rod 212 through a hinge; the other end of the second connecting rod 212 is connected with a third connecting rod 213 through a hinge; the third connecting rod 213 is fixedly connected with the fifth rotating shaft 321; the hinge units are divided into two groups and symmetrically distributed in the left side surface of the machine body 1; a material guide plate 4 is fixedly arranged in the machine body 1; the number of the material guide plates 4 is two, and the two material guide plates are symmetrically arranged in the machine body 1; the material guide plate 4 is fixedly provided with a triangular block 41; the two triangular blocks 41 are respectively arranged on two vertically opposite side surfaces of the material guide plate 4; the triangular block 41 is in a right-angled triangle shape; the inclined surfaces of the two triangular blocks 41 are opposite; the lower part of the triangular block 41 is a flat plate; a support column 42 is fixedly connected between the flat plate and the machine body 1; a washboard I6 is arranged in the machine body 1 through a rotating shaft II 63; a second washboard 62 is arranged in the machine body 1 through a seventh rotating shaft 64; the washboard I6 and the washboard II 62 are rectangular; the first washboard 6 and the second washboard 62 are vertically arranged, and the first washboard 6 and the second washboard 62 are positioned in the middle of the material guide plate 4; a cross bar 232 is fixedly arranged on the third rotating shaft 231; the cross rod 232 is positioned in the second cavity 13; the cross bar 232 is connected with the rotating shaft six 63 through a hinge unit II; the second hinge unit comprises a fourth connecting rod 233 and a fifth connecting rod 234; one end of the four connecting rods 233 is hinged to one end of the cross rod 232; the tail end of the connecting rod four 233 is connected with the connecting rod five 234 through a hinge; the other end of the connecting rod five 234 is connected with a rotating shaft six 63 through a hinge; the two connecting units are two groups, and the other group is connected with the other end of the cross rod 232 and the rotating shaft seven 64;
when the device works, the motor 235 is started, the motor 235 drives the third crushing roller 23 to start rotating, and the third crushing roller 23 drives the first crushing roller 2 and the second crushing roller 22 to start rotating through the transmission belt; waste alumina ceramic serving as a raw material is put into a processing device through a feeding port 112, the waste alumina ceramic entering the processing device falls onto a first crushing roller 2 and a second crushing roller 22 and is crushed by the first crushing roller 2 and the second crushing roller 22 to become small particles, meanwhile, because the first crushing roller 2, the second crushing roller 22 and a third crushing roller 23 are connected through a transmission belt, the rotation directions of the first crushing roller 2 and the second crushing roller 22 are consistent, the movement directions of the first crushing roller 2 and the second crushing roller 22 are inconsistent, a cutting effect is generated on the waste alumina ceramic, the crushing process is accelerated, meanwhile, the inconsistent movement directions can relatively fix the raw material at the middle positions of the first crushing roller 2 and the second crushing roller to prevent the raw material from moving, the crushing efficiency is influenced, when the waste alumina ceramic is crushed into small particles and falls, because the third crushing roller 23 is positioned below the first crushing roller 2 and the second crushing roller 22, the crushed small particles are subjected to the action of the third crushing roller 23 again, the particles are continuously crushed, the particle size of the particles is smaller, meanwhile, multiple crushing effects can be generated by the third crushing roller 23, the particle size fineness of the particles generated after crushing is improved, the diameter of the particles is ensured to be consistent, meanwhile, the third crushing roller 23 can prevent the particles which are not completely crushed and fall between the first crushing roller 2 and the second crushing roller 22, the particles are fully crushed, and the quality of a final product is ensured; after the crushed particles pass through the third crushing roller 23, the particles are gathered by the guide plate 4, so that the crushed particles pass through the fourth crushing roller 3 and the fifth crushing roller 32, and because the fourth crushing roller 3 and the fifth crushing roller 32 are connected to the first rotating shaft 21 through the hinge unit, when the first rotating shaft 21 operates, the fourth crushing roller 3 and the fifth crushing roller 32 move up and down and impact with the inclined surface of the triangular block 41 arranged on the guide plate 4, so that the particles passing through the fourth crushing roller 3 and the fifth crushing roller 32 are further crushed, the diameter of the crushed particles is reduced, and the performance of the product is improved; after the particles pass through the positions of the four crushing rollers 3 and the five crushing rollers 32, the particles reach the first washboard 6 and the second washboard 62, the first washboard 6 and the second washboard 62 are connected to the cross rod 232 through the second hinge unit, meanwhile, the cross rod 232 is fixedly connected to the third rotating shaft 231, when the third rotating shaft 231 rotates, the cross rod 232 starts to rotate to drive the first washboard 6 and the second washboard 62 which are connected to start to move up and down, and due to the existence of the cross rod 232, the moving directions of the first washboard 6 and the second washboard 62 are opposite, so that the particles between the first washboard 6 and the second washboard 62 are subjected to a kneading effect, and the diameters of the particles are further reduced until the target diameter is reached; after the crushed particles pass through the first washboard 6 and the second washboard 62, the particles fall downwards to the bottom of the machine body 1 to be collected, meanwhile, the diameter of the particles obtained after treatment meets the requirement under the action of the first washboard 6 and the second washboard 62, and the particles with overlarge diameters are prevented from passing through and being mixed, so that the performance of the product is influenced.
As an embodiment of the invention, the surface of the first crushing roller 2 is uniformly provided with rectangular blocks 223; conical blocks 222 are uniformly arranged on the surface of the crushing roller I2; rectangular blocks 223 are uniformly arranged on the surface of the second crushing roller 22; conical blocks 222 are uniformly arranged on the surface of the second crushing roller 22; the rectangular blocks 223 and the conical blocks 222 on the surfaces of the first crushing roller 2 and the second crushing roller 22 are mutually staggered; rectangular blocks 223 are uniformly arranged on the surface of the third crushing roller 23; conical blocks 222 are uniformly arranged on the surface of the third crushing roller 23;
during operation, the rectangular blocks 223 and the conical blocks 222 can effectively extrude and crush the waste alumina ceramics, so as to ensure crushing efficiency, meanwhile, the rectangular blocks 223 and the conical blocks 222 on the first crushing roller 2 and the second crushing roller 22 are arranged in a staggered manner, so that the waste alumina ceramics falling into the processing device can be tightly clamped, the ceramic blocks are prevented from flying out after being stressed and extruded in the crushing process and being hit on the machine body 1, so that crushing efficiency is influenced, and larger noise is generated, meanwhile, the conical blocks 222 can extrude the ceramic blocks through tips in the crushing process, so that the breaking speed of the ceramic blocks is increased, the breaking pressure is reduced, the load of the processing device is reduced, the service life of the machine is prolonged, meanwhile, the rectangular blocks 223 can fix the ceramic blocks to a certain extent, the conical blocks 222 are convenient to crush, the efficiency of crushing treatment is increased, and simultaneously, the ceramic blocks are prevented from splashing inside the machine body 1 and impacting the machine body 1 to generate larger noise.
As an embodiment of the invention, arc-shaped protrusions 61 are uniformly arranged on the surfaces of the left side and the right side of the washboard 6; arc-shaped bulges 61 are uniformly arranged on the surfaces of the left side and the right side of the second washboard 62; the first washboard 6 and the second washboard 62 are provided with arc-shaped bulges 61 which correspond to each other; semicircular bulges 411 are uniformly arranged on the partial surfaces, facing the first washboard 6 and the second washboard 62, of the triangular blocks 41; the left side and the right side of the upper ends of the first washboard 6 and the second washboard 62 are arc-shaped;
during operation, the arc-shaped protrusions 61 arranged on the first washboard 6 and the second washboard 62 can effectively improve the friction force and extrusion force of the first washboard 6 and the second washboard 62 on particles, the particle crushing effect and speed are improved, the particle diameters after crushing are consistent, meanwhile, the arranged arc-shaped protrusions 61 can block the particles between the first washboard 6 and the second washboard 62 when the first washboard 6 and the second washboard 62 move relatively to rub, the staying time of the particles between the first washboard 6 and the second washboard 62 is prolonged, the crushing effect is improved, meanwhile, the left side and the right side of the upper ends of the first washboard 6 and the second washboard 62 are arc-shaped, so that the particles falling from the upper side can enter the middle of the first washboard 6 and the second washboard 62 more smoothly, and the particles are prevented from being accumulated on the first washboard 6 and the second washboard 62, and the crushing effect is prevented.
As an embodiment of the present invention, spherical protrusions are uniformly arranged on the inclined surface of the triangular block 41; grooves are uniformly formed in the surfaces of the fourth crushing roller 3 and the fifth crushing roller 32; the groove is matched with the spherical bulge on the triangular block 41;
the during operation, because the globular arch that sets up on the inclined plane, the resistance that the granule received when passing through the inclined plane increases, delays the time that the granule passes through the inclined plane, increases the time that the granule received four 3 and five 32 effects of crushing roller to promote the treatment effect, simultaneously, set up at the recess on four 3 and five 32 surfaces of crushing roller, can mutually support with globular arch, promote the granule crushing effect, further reduce the diameter of smashing back granule, promote the performance of product.
As an embodiment of the present invention, the body 1 is provided with a rectangular hole 14; the rectangular hole 14 is positioned on the right side surface of the machine body 1; a material receiving box 5 is arranged in the machine body 1; a filter screen is arranged in the material receiving box 5; the material receiving box 5 is partially positioned in the rectangular hole 14; the material receiving box 5 and the machine body 1 are sealed; a handle 51 is fixedly arranged on the material receiving box 5; the handle 51 is positioned in the rectangular hole 14; the upper cover 11 is provided with a material port cover plate 111; the material port cover plate 111 is positioned on the material feeding port 112; the interior of the machine body 1 is in a negative pressure state in the production process;
the during operation, 1 inside and outside keeping relatively sealed of organism, the noise that the during operation produced in the organism 1 is difficult to wear out with the dust, reduces noise and dust pollution, simultaneously, be in the negative pressure state in the production process organism 1 and can effectually prevent that the organism 1 from producing the dust and leaking, cause the pollution, simultaneously, the filter screen of setting in receiving box 5 can block partly unqualified granule of particle diameter, guarantees that the granule particle diameter that obtains is even unanimous, thereby improves the performance of product.
A cable comprising a conductive core and a jacket; the sheath is made of the high-thermal-conductivity polyvinyl chloride sheath material for the cable obtained from any one of the above parts; the conductive wire core is positioned in the sheath.
The specific working process is as follows:
when the device works, the motor 235 is started, the motor 235 drives the third crushing roller 23 to start rotating, and the third crushing roller 23 drives the first crushing roller 2 and the second crushing roller 22 to start rotating through the transmission belt; the waste alumina ceramics serving as the raw material is put into the processing device through the feeding port 112, the waste alumina ceramics entering the processing device fall onto the first crushing roller 2 and the second crushing roller 22, and then are crushed by the first crushing roller 2 and the second crushing roller 22 to become small particles, when the waste alumina ceramics are crushed into small particles and fall down, the third crushing roller 23 is positioned below the first crushing roller 2 and the second crushing roller 22, and the crushed small particles are acted by the third crushing roller 23 again to continue the crushing action on the particles; after the crushed particles pass through the third crushing roller 23, the particles are gathered by the guide plate 4, so that the crushed particles pass through the fourth crushing roller 3 and the fifth crushing roller 32, and because the fourth crushing roller 3 and the fifth crushing roller 32 are connected to the first rotating shaft 21 through the hinge unit, when the first rotating shaft 21 operates, the fourth crushing roller 3 and the fifth crushing roller 32 move up and down and impact with the inclined surface of the triangular block 41 arranged on the guide plate 4, so that the particles passing through the fourth crushing roller 3 and the fifth crushing roller 32 are further crushed; after the particles pass through the positions of the four crushing rollers 3 and the five crushing rollers 32, the particles reach the first washboard 6 and the second washboard 62, the first washboard 6 and the second washboard 62 are connected to the cross rod 232 through the second hinge unit, meanwhile, the cross rod 232 is fixedly connected to the third rotating shaft 231, when the third rotating shaft 231 rotates, the cross rod 232 starts to rotate to drive the first washboard 6 and the second washboard 62 which are connected to start to move up and down, and due to the existence of the cross rod 232, the moving directions of the first washboard 6 and the second washboard 62 are opposite, so that the particles between the first washboard 6 and the second washboard 62 are subjected to a kneading effect, and the diameter of the particles is further reduced; when the crushed particles pass through the position of the first washboard 6 and the second washboard 62, the particles fall downwards to the bottom of the machine body 1 and are collected; the rectangular blocks 223 and the conical blocks 222 on the first crushing roller 2 and the second crushing roller 22 are arranged in a staggered mode, so that waste alumina ceramic falling into the processing device can be tightly clamped, the arranged conical blocks 222 can extrude the ceramic blocks through tips in the crushing process, the breaking speed of the ceramic blocks is increased, the crushing pressure is reduced, meanwhile, the ceramic blocks can be fixed by the arranged rectangular blocks 223 to a certain extent, and the conical blocks 222 can be conveniently crushed; the arc-shaped protrusions 61 arranged on the first washboard 6 and the second washboard 62 can effectively improve the friction force and the extrusion force of the first washboard 6 and the second washboard 62 on the particles, and meanwhile, the arranged arc-shaped protrusions 61 can block the particles between the first washboard 6 and the second washboard 62 when the first washboard moves relative to the second washboard 62, so that the retention time of the particles between the first washboard 6 and the second washboard 62 is prolonged; because the spherical bulges are arranged on the inclined surface, the resistance of the particles passing through the inclined surface is increased, the time of the particles passing through the inclined surface is delayed, the time of the particles being acted by the fourth crushing roller 3 and the fifth crushing roller 32 is increased, and meanwhile, the grooves arranged on the surfaces of the fourth crushing roller 3 and the fifth crushing roller 32 can be matched with the spherical bulges, so that the particle crushing effect is improved; the inside and outside relative seal that keeps of organism 1, the noise and the dust that the during operation produced in the organism 1 are difficult to wear out, simultaneously, are in the negative pressure state in the production process organism 1 and can effectually prevent that the dust from leaking in the organism 1, and simultaneously, the filter screen of setting in collecting box 5 can block unqualified granule of particle diameter.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (6)

1. The utility model provides a high heat conduction polyvinyl chloride sheath material for cable which characterized in that: the high-thermal-conductivity polyvinyl chloride sheath material for the cable is prepared from the following materials in parts by mass:
50-55 parts of polyvinyl chloride resin, 5-6 parts of epoxy resin, 0.5-1 part of curing agent, 30-35 parts of heat conducting agent, 8-10 parts of heat conducting auxiliary material, 2-3 parts of antioxidant, 6-10 parts of flame retardant and 2-3 parts of smoke suppressor;
the heat conducting agent is micron-grade alumina; the heat conducting agent is obtained by treating waste alumina ceramics; the heat conduction auxiliary material is a mixture consisting of boron nitride and magnesium oxide in the following proportion: 1: 1; the magnesium oxide has two particle sizes which are respectively 45 μm and 10 μm, and the proportion of the two particle sizes is as follows: 3: 2; the antioxidant is an antioxidant 1010; the flame retardant is a mixture consisting of sodium hydroxide, capsule red phosphorus and zinc borate, and comprises the following components in proportion: 2: 2: 1; the smoke suppressor is ferrocene;
the preparation method of the high-thermal-conductivity polyvinyl chloride sheath material for the cable comprises the following steps:
s1: preparing a heat conducting agent; putting the waste alumina ceramic serving as the raw material into a water tank, cleaning the waste alumina ceramic, and cleaning various magazines and dust existing on the surface of the raw material; then putting the cleaned raw materials into a processing device to obtain semi-finished product aluminum oxide powder; then, washing the semi-finished product of alumina powder with water, and drying to obtain a heat-conducting agent;
s2: preparing a product; putting polyvinyl chloride resin into a reaction kettle, heating until the polyvinyl chloride resin is molten, then sequentially putting the heat conducting agent prepared in the step S1 and other components into the reaction kettle according to a preset proportion, continuously stirring mixed raw materials in the reaction kettle in the process of putting the components, and simultaneously adding the next component after each component is fully stirred and completely mixed; after all the components are added, keeping the raw materials in the reaction kettle in a molten state, and continuously stirring for 10-20 min to obtain the finished high-thermal-conductivity polyvinyl chloride sheath material for the cable;
wherein the processing device comprises a machine body (1) and an upper cover (11); the upper cover (11) is arranged above the machine body (1); a feeding port (112) is formed in the middle of the upper cover (11); the machine body (1) is hollow; a first crushing roller (2) is arranged in the machine body (1) through a first rotating shaft (21); a second crushing roller (22) is arranged in the machine body (1) through a second rotating shaft (221); the first crushing roller (2) and the second crushing roller (22) are positioned at the same height; a gap exists between the first crushing roller (2) and the second crushing roller (22); a third crushing roller (23) is arranged in the machine body (1) through a third rotating shaft (231); the third crushing roller (23) is positioned below the first crushing roller (2) and the second crushing roller (22), and the distances between the third crushing roller (23) and the first crushing roller (2) and the second crushing roller (22) are equal; a first cavity (12) is formed in the side wall of the left side of the machine body (1) in the length direction; a second cavity (13) is formed in the side wall on the right side of the machine body (1) in the length direction; two ends of the first rotating shaft (21), the second rotating shaft (221) and the third rotating shaft (231) are respectively inserted into the first cavity (12) and the second cavity (13); one end of the rotating shaft III (231) inserted into the cavity I (12) extends out of the machine body (1); one ends of the first rotating shaft (21), the second rotating shaft (221) and the third rotating shaft (231) which are positioned in the second cavity (13) are connected with each other through a transmission belt; a motor (235) is fixedly arranged on the left side surface of the machine body (1); an output shaft of the motor (235) is connected with one end of the rotating shaft III (231) which is positioned outside the machine body (1) through a transmission belt; a crushing roller IV (3) is arranged in the machine body (1) through a rotating shaft IV (31); a fifth crushing roller (32) is arranged in the machine body (1) through a fifth rotating shaft (321); the fourth crushing roller (3) and the fifth crushing roller (32) are positioned at the same height; the fourth crushing roller (3) and the fifth crushing roller (32) are both positioned below the third crushing roller (23); a gap is reserved between the fourth crushing roller (3) and the fifth crushing roller (32); the first rotating shaft (21) is connected with the fifth rotating shaft (321) through a first hinge unit; the first hinge unit is positioned in the first cavity (12); the first hinge unit comprises a first connecting rod (211), a second connecting rod (212) and a third connecting rod (213); the first connecting rod (211) is fixedly connected to the first rotating shaft (21); the tail end of the first connecting rod (211) is connected with the second connecting rod (212) through a hinge; the other end of the second connecting rod (212) is connected with a third connecting rod (213) through a hinge; the third connecting rod (213) is fixedly connected with the fifth rotating shaft (321); the hinge units are divided into two groups and symmetrically distributed in the left side surface of the machine body (1); a material guide plate (4) is fixedly arranged in the machine body (1); the two material guide plates (4) are symmetrically arranged in the machine body (1); a triangular block (41) is fixedly arranged on the material guide plate (4); the two triangular blocks (41) are respectively arranged on two vertically opposite side surfaces of the material guide plate (4); the triangular block (41) is in a right-angled triangle shape; the inclined surfaces of the two triangular blocks (41) are opposite; the lower part of the triangular block (41) is a flat plate; a support column (42) is fixedly connected between the flat plate and the machine body (1); a washboard I (6) is arranged in the machine body (1) through a rotating shaft II (63); a second washboard (62) is arranged in the machine body (1) through a seventh rotating shaft (64); the washboard I (6) and the washboard II (62) are in a cuboid shape; the first washboard (6) and the second washboard (62) are vertically arranged, and the first washboard (6) and the second washboard (62) are positioned in the middle of the material guide plate (4); a cross bar (232) is fixedly arranged on the rotating shaft III (231); the cross rod (232) is positioned in the second cavity (13); the cross bar (232) is connected with the rotating shaft six (63) through a hinge unit II; the second hinge unit comprises a fourth connecting rod (233) and a fifth connecting rod (234); one end of the connecting rod four (233) is hinged to one end of the cross rod (232); the tail end of the connecting rod four (233) is connected with the connecting rod five (234) through a hinge; the other end of the connecting rod five (234) is connected with a rotating shaft six (63) through a hinge; the two connecting units are two groups in total, and the other group is connected with the other end of the cross rod (232) and the rotating shaft seven (64).
2. The high thermal conductivity polyvinyl chloride sheathing material for cables according to claim 1, wherein: rectangular blocks (223) are uniformly arranged on the surface of the first crushing roller (2); conical blocks (222) are uniformly arranged on the surface of the first crushing roller (2); rectangular blocks (223) are uniformly arranged on the surface of the second crushing roller (22); conical blocks (222) are uniformly arranged on the surface of the second crushing roller (22); the rectangular blocks (223) and the conical blocks (222) on the surfaces of the first crushing roller (2) and the second crushing roller (22) are mutually staggered; rectangular blocks (223) are uniformly arranged on the surface of the third crushing roller (23); conical blocks (222) are uniformly arranged on the surface of the third crushing roller (23).
3. The high thermal conductivity polyvinyl chloride sheathing material for cables according to claim 1, wherein: arc-shaped bulges (61) are uniformly arranged on the surfaces of the left side and the right side of the washboard I (6); arc-shaped bulges (61) are uniformly arranged on the surfaces of the left side and the right side of the second washboard (62); the first washboard (6) and the second washboard (62) are provided with arc-shaped bulges (61) which correspond to each other; semicircular bulges (411) are uniformly arranged on the partial surface of the triangular block (41) opposite to the first washboard (6) and the second washboard (62); the left side and the right side of the upper ends of the first washboard (6) and the second washboard (62) are arc-shaped.
4. The high thermal conductivity polyvinyl chloride sheathing material for cables according to claim 1, wherein: spherical bulges are uniformly arranged on the inclined surface of the triangular block (41); grooves are uniformly formed in the surfaces of the fourth crushing roller (3) and the fifth crushing roller (32); the grooves are matched with the spherical bulges on the triangular blocks (41).
5. The high thermal conductivity polyvinyl chloride sheathing material for cables according to claim 1, wherein: a rectangular hole (14) is formed in the machine body (1); the rectangular hole (14) is positioned on the right side surface of the machine body (1); a material receiving box (5) is arranged in the machine body (1); a filter screen is arranged in the material receiving box (5); the material receiving box (5) is partially positioned in the rectangular hole (14); the material receiving box (5) and the machine body (1) are sealed; a handle (51) is fixedly arranged on the material receiving box (5); the handle (51) is positioned in the rectangular hole (14); a material port cover plate (111) is arranged on the upper cover (11); the material port cover plate (111) is positioned on the feeding port (112); the machine body (1) is in a negative pressure state in the production process.
6. A cable, characterized by: the cable comprises a conductive wire core and a sheath; the sheath is made of the high-thermal-conductivity polyvinyl chloride sheath material for the cable according to any one of the claims 1 to 5; the conductive wire core is positioned in the sheath.
CN202010443018.4A 2020-05-22 2020-05-22 High-thermal-conductivity polyvinyl chloride sheath material for cable and cable Pending CN111647237A (en)

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CN202010443018.4A CN111647237A (en) 2020-05-22 2020-05-22 High-thermal-conductivity polyvinyl chloride sheath material for cable and cable

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112194863A (en) * 2020-09-29 2021-01-08 镇江市华银仪表电器有限公司 Outdoor weather-resistant polyvinyl chloride cable sheath material and preparation method thereof

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