CN111559025A - Production process of environment-friendly cable material - Google Patents
Production process of environment-friendly cable material Download PDFInfo
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- CN111559025A CN111559025A CN202010466418.7A CN202010466418A CN111559025A CN 111559025 A CN111559025 A CN 111559025A CN 202010466418 A CN202010466418 A CN 202010466418A CN 111559025 A CN111559025 A CN 111559025A
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- 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
- B29B9/00—Making granules
- B29B9/02—Making granules by dividing preformed material
- B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
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- 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
- B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
- B29B7/7461—Combinations of dissimilar mixers
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- 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
- B29B9/00—Making granules
- B29B9/12—Making granules characterised by structure or composition
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- 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
- B29B9/00—Making granules
- B29B9/16—Auxiliary treatment of granules
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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
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- 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
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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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
- 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
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- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention relates to a production process of an environment-friendly cable material, which comprises the following steps: the method comprises the following steps: s1, weighing and feeding materials, namely selecting 40-60 parts of polyvinyl chloride resin, 15-20 parts of dioctyl terephthalate, 20-25 parts of calcium carbonate, 6-10 parts of calcium zinc stabilizer and 1-2 parts of PE wax; adding the materials into a mixer in batches and stirring for 1-2 h; s2, extruding and thermoplastic molding, wherein the materials are subjected to different-direction rotation mixing by two screws of a double-screw extruder at the rotating speed of 800-; s3, cutting and cooling, wherein the particles of the material hot-cut from the die surface of the single screw extruder are conveyed to the tail end by a blower, and the cut particles are cooled when the material is conveyed by the blower; s4, sieving, and separating the particles which are subjected to air blast cooling from the particles which are agglomerated together through a vibrating screen; and S5, packaging. The invention has the following advantages: the production quality and the energy production of the cable material are ensured, and the discharge amount of the waste gas of the hydrogen chloride is reduced.
Description
The technical field is as follows:
the invention relates to the field of cable material production, in particular to a production process of an environment-friendly cable material.
Background art:
the wire and cable is a wire product for transmitting electric energy and information and realizing electromagnetic energy conversion, is one of products which must be matched when an electric product is used, is used as a main carrier for electric power transmission, plays roles in transmitting electric power, transmitting information and realizing electromagnetic energy conversion in the electric product, is widely applied to the aspects of electric equipment, lighting circuits, household appliances and the like, and has the important quality as a cable material which is one of raw materials of the wire and cable.
At present, in the process of producing the cable material, a single-screw extrusion cable material or a double-screw extrusion cable material is often adopted, and when the single-screw extrusion cable material is adopted for extrusion, the defect of insufficient mixing usually occurs, so that the prepared cable material is low in uniformity, if the double-screw extrusion cable material is adopted for extrusion, the retention time of the material in the double-screw extruder is short, the shearing force of the material subjected to the double screws is weak, and the extrusion granulation effect is poor. Therefore, mixing and shearing granulation need to be carried out in different extruders, when the mixed and extruded material enters a single-screw extruder, gas in the material needs to be removed, if the gas cannot be discharged, gaps, bubbles and dull surface appear on the surface or inside of a granular product sheared and granulated by the single-screw extruder, and simultaneously the physical property, the chemical property and the electrical property of the cable material are influenced, and the most common means is to arrange an exhaust hole at the head of the single-screw extruder. The resistance at the machine head of the existing single-screw extruder is large, the plasticized material generates a material overflow phenomenon at an exhaust port, the volatile content of the material is improved, even the material blocks the exhaust port, and the production quality of the cable material is influenced;
secondly, in the mixing process of the double-screw extruder, the existing cable material can be segregated by rapid stirring, the mixing uniformity of the material is damaged, the plasticizing extrusion temperature is controlled to be above 150 ℃, and a large amount of waste gas (mainly ethylene and hydrogen chloride) is generated by thermal decomposition in the thermoplastic process, so that the environment is polluted.
The invention content is as follows:
the invention aims to overcome the defects and provide a production process of an environment-friendly cable material, so that the production quality and the production energy of the cable material are ensured, and the discharge amount of hydrogen chloride waste gas is reduced.
The purpose of the invention is realized by the following technical scheme: a production process of an environment-friendly cable material comprises the following steps:
s1, weighing and feeding materials, namely selecting 40-60 parts of polyvinyl chloride resin, 15-20 parts of dioctyl terephthalate, 20-25 parts of calcium carbonate, 6-10 parts of calcium zinc stabilizer and 1-2 parts of PE wax; adding the materials into a mixer in batches and stirring for 1-2 h;
s2, extruding thermoplastic plastics, pressing the materials into a specific double-stage extrusion device through a conical forced feeding machine, wherein the specific double-stage extrusion device comprises a double-screw extruder and a single-screw extruder, the extending direction of the double-screw extruder and the extending direction of the single-screw extruder form an included angle alpha, the double-screw extruder and the single-screw extruder are connected through a bending pipe, the bending part of the bending pipe is in arc transition, the bending angle of the bending pipe is beta, the alpha and the beta are consistent and are 45-60 degrees, the materials are subjected to heterodromous rotation mixing of the two screws of the double-screw extruder at a rotating speed of 800-900r/min, the materials are conveyed into the single-screw extruder through the bending pipe, shearing granulation is completed by the shearing force and the friction force of the single screw, and the double-screw extruder and the single-screw extruder are both controlled by an electric heating mode and indirect circulating cooling water temperature, the plasticizing temperature is 100-150 ℃, and the circulating water amount is 1 t/h;
s3, cutting and cooling, wherein the particles of the material hot-cut from the die surface of the single screw extruder are conveyed to the tail end by a blower, and the cut particles are cooled when the material is conveyed by the blower;
s4, sieving, and separating the particles which are subjected to air blast cooling from the particles which are agglomerated together through a vibrating screen;
s5, packaging, and filling the produced particles into a packaging bag to obtain the finished product.
2. The process for producing an environment-friendly cable material as claimed in claim 1, wherein in step S2, the specific two-stage extrusion device comprises a twin-screw extruder and a single-screw extruder, and the twin-screw extruder and the single-screw extruder are connected through a bending pipe;
the double-screw extruder comprises a double-screw extrusion shell and two first screws arranged in parallel in the double-screw extrusion shell, a feed hopper is arranged above one end, far away from the single-screw extruder, of the double-screw extrusion shell, the die outlet surface of the double-screw extrusion shell is communicated with the bending pipe, the single-screw extruder comprises a single-screw extrusion shell and a second screw arranged in the single-screw extrusion shell, one end, far away from the bending pipe, of each first screw and one end, close to the bending pipe, of each second screw respectively penetrate through the corresponding double-screw extrusion shell and the corresponding single-screw extrusion shell and are connected with gear pumps, and a discharge port of the bending pipe is arranged above the corresponding second screw;
the single-screw extrusion shell and the double-screw extrusion shell are sequentially provided with a heating cavity and a cooling cavity, a temperature sensor is arranged in the cooling cavity, a plurality of uniformly distributed heating pipes are arranged in the heating cavity, two ends of the cooling cavity are connected with circulating water pipes, and circulating pumps are arranged on the circulating water pipes.
The invention is further improved in that: the one end that the single screw rod extruded the casing and is close to the pipe of bending is equipped with exhaust assembly, and exhaust assembly includes the gas vent and arranges the intraoral stainless steel mesh in the gas vent in, and the stainless steel mesh level sets up, is equipped with a plurality of circular arc baffles that misplace from top to bottom in the gas vent, and the opening of circular arc baffle sets up down, and the downside position of stainless steel mesh is all arranged in to the circular arc baffle.
The invention is further improved in that: the position that circular arc baffle and gas vent are connected is equipped with the hole of falling liquid, and the hole of falling liquid sets up towards the axis tilt up of gas vent.
The invention is further improved in that: the arc baffle is made of stainless steel.
The invention is further improved in that: the first screw rod and the second screw rod both comprise a rod body part and a spiral part, and the thickness of the spiral part of the second screw rod is gradually reduced from the rod body part to the outside.
The invention is further improved in that: in step S3, the blast air is divided into two sections, each section of air pipe is 3m long, and each section of air pipe receives material through cyclone.
Compared with the prior art, the invention has the following advantages:
1. after the material is evenly mixed through the double screw extruder, cut the granulation in carrying to single screw extruder through the pipe of bending, the change of material flow angle has increaseed the internal friction force of material each other, make the gas separation in the material come out, and extrude through single screw, gaseous through exhaust subassembly discharge, the material flows to pivoted single screw along with the action of gravity, the shearing force of single screw to the material has been increaseed, effectively realize cutting the granulation, the setting of exhaust subassembly reduces the volatile content in the material by a wide margin, guarantee the physical properties and the chemical properties of the cable material of production, avoid the gas vent to emit the material, the capacity is improved.
2. The double-screw extruder and the single-screw extruder are provided with the gear pumps to drive the screws to rotate, so that the resistance of the machine head is reduced, the problem of material overflow in the shearing and granulating process is effectively solved, the blockage of an exhaust port is avoided, and the production quality of cable materials is ensured.
3. The two screws of the double-screw extruder rotate in different directions for mixing at the rotating speed of 800-.
4. The temperature is controlled at 150 ℃ by electric heating and circulating cooling, the granulation quality of the material is ensured while the yield is high, the yield of hydrogen chloride gas is low after the stabilizer is added, the stabilizer prevents the chain decomposition of polyvinyl chloride, and the generation amount of waste gas hydrogen chloride at the temperature is only 1-3%.
5. The material gathers in the aircraft nose portion of single screw extruder, the gear pump drives the quick rotation of single screw rod, thereby suitably reduce aircraft nose resistance, make the material cut the granulation along with the second screw rod, and some material is along with gas to the gas vent discharge, material and gas striking are on the circular arc baffle of gas vent, the material receives the action of gravity and takes place to separate with gas and fall to the second screw rod on, gas passes a plurality of circular arc baffles and outwards discharges, in case some tiny particle material continues upwards to flow along with gas, when striking the circular arc baffle again and fall, tiny particle material can fall to circular arc baffle up end and fall to the second screw rod on from the downthehole whereabouts of falling liquid, the setting of multilayer circular arc baffle guarantees the thoroughness of gas and material separation, even under the condition that appears the material-emitting, the setting of circular arc baffle still can block the material and make it fall.
Description of the drawings:
FIG. 1 is a schematic view of the structure of a specific double-stage extrusion apparatus of the present invention.
Fig. 2 is a schematic structural view of an exhaust assembly of the present invention.
FIG. 3 is a schematic view of the connection between the bending tube and the single screw extruder.
Reference numbers in the figures:
1-double screw extruder, 2-single screw extruder, 3-bending tube;
11-a double-screw extrusion shell, 12-a first screw, 13-a feed hopper, 14-a heating chamber, 15-a cooling chamber, 16-a temperature sensor, 17-a heating pipe, 18-a circulating water pipe and 19-a circulating pump;
21-single screw extrusion shell, 22-second screw, 23-gear part, 24-exhaust component;
221-helix, 222-shaft;
241-air outlet, 242-stainless steel net, 243-arc baffle and 244-liquid pouring hole.
The specific implementation mode is as follows:
for the purpose of enhancing the understanding of the present invention, the present invention will be further described in detail with reference to the following examples and the accompanying drawings, which are only used for explaining the present invention and are not to be construed as limiting the scope of the present invention.
A production process of an environment-friendly cable material comprises the following steps:
s1, weighing and feeding materials, namely selecting 40-60 parts of polyvinyl chloride resin, 15-20 parts of dioctyl terephthalate, 20-25 parts of calcium carbonate, 6-10 parts of calcium zinc stabilizer and 1-2 parts of PE wax; adding the materials into a mixer in batches and stirring for 1-2 h;
s2, extruding thermoplastic plastics, pressing the materials into a specific double-stage extrusion device through a conical forced feeding machine, wherein the specific double-stage extrusion device comprises a double-screw extruder and a single-screw extruder, the extending direction of the double-screw extruder and the extending direction of the single-screw extruder form an included angle alpha, the double-screw extruder and the single-screw extruder are connected through a bending pipe, the bending part of the bending pipe is in arc transition, the bending angle of the bending pipe is beta, the alpha and the beta are consistent and are 45-60 degrees, the materials are subjected to heterodromous rotation mixing of the two screws of the double-screw extruder at a rotating speed of 800-900r/min, the materials are conveyed into the single-screw extruder through the bending pipe, shearing granulation is completed by the shearing force and the friction force of the single screw, and the double-screw extruder and the single-screw extruder are both controlled by an electric heating mode and indirect circulating cooling water temperature, the plasticizing temperature is 100-150 ℃, and the circulating water amount is 1 t/h;
s3, cutting and cooling, wherein the particles of the material hot-cut from the die surface of the single screw extruder are conveyed to the tail end by a blower, and the cut particles are cooled when the material is conveyed by the blower;
s4, sieving, and separating the particles which are subjected to air blast cooling from the particles which are agglomerated together through a vibrating screen;
s5, packaging, and filling the produced particles into a packaging bag to obtain the finished product.
In this application, the material is after double screw extruder is evenly mixed, cut the granulation in carrying to single screw extruder through the pipe of bending, the change of material flow angle has increaseed the internal friction power of material each other, make the gas separation in the material come out, and extrude through single screw, gaseous through the exhaust subassembly discharge, the material flows to pivoted single screw along with the action of gravity, the shearing force of single screw to the material has been increaseed, effectively realize cutting the granulation, the setting of exhaust subassembly reduces the volatile content in the material by a wide margin, guarantee the physical properties and the chemical properties of the cable material of production, avoid the gas vent to emit the material.
Wherein, the two screws of the double screw extruder 1 rotate in different directions for mixing at the rotating speed of 800-.
The temperature is controlled at 150 ℃ by electric heating and circulating cooling, the granulation quality of the material is ensured while the yield is high, the yield of hydrogen chloride gas is low after the stabilizer is added, the stabilizer prevents the chain decomposition of polyvinyl chloride, and the generation amount of waste gas hydrogen chloride at the temperature is only 1-3%.
Further, in step S2, as shown in fig. 1, the specific double-stage extrusion device includes a double-screw extruder 1 and a single-screw extruder 2, and the double-screw extruder 1 and the single-screw extruder 2 are connected through a bending pipe 3;
the double-screw extruder 1 comprises a double-screw extruder shell 11 and two first screws 12 arranged in parallel in the double-screw extruder shell 11, a feed hopper 13 is arranged above one end, far away from the single-screw extruder 2, of the double-screw extruder shell 11, the die stripping surface of the double-screw extruder shell 11 is communicated with the bent pipe 3, the single-screw extruder 2 comprises a single-screw extruder shell 21 and second screws 22 arranged in the single-screw extruder shell 21, one end, far away from the bent pipe 3, of each first screw 12 and one end, near to the bent pipe 3, of each second screw 22 respectively penetrate through the corresponding double-screw extruder shell 11 and the corresponding single-screw extruder shell 21 and are connected with gear pumps 23, and as shown in fig. 3, a discharge port of the bent pipe 3 is arranged above the corresponding second screws 22;
the single-screw extrusion shell 21 and the double-screw extrusion shell 11 are sequentially provided with a heating chamber 14 and a cooling chamber 15, the cooling chamber 15 is internally provided with a temperature sensor 16, the heating chamber 14 is internally provided with a plurality of uniformly distributed heating pipes 17, two ends of the cooling chamber 15 are connected with circulating water pipes 18, and the circulating water pipes 18 are provided with circulating pumps 19.
In this application, the double screw extruder 1 and the single screw extruder 2 are gone up the drive of installation gear pump 23 and are come the screw rod to rotate, reduce the aircraft nose resistance to effectively solve the material phenomenon of falling among the shearing granulation process, avoid gas vent 241 to block up, guarantee the production quality of cable material.
Further, the single-screw extrusion housing 21 is provided with the exhaust assembly 24 near one end of the bent pipe 3, as shown in fig. 2, the exhaust assembly 24 includes an exhaust port 241 and a stainless steel net 242 disposed in the exhaust port 241, the stainless steel net 242 is horizontally disposed, a plurality of arc baffles 243 disposed in the exhaust port 241 and staggered up and down are disposed in the exhaust port 241, openings of the arc baffles 243 are disposed downward, and the arc baffles 243 are disposed at lower positions of the stainless steel nets 242.
Furthermore, a liquid pouring hole 244 is formed at a position where the arc-shaped baffle 243 is connected to the exhaust port 241, and the liquid pouring hole 244 is inclined upward toward the axis of the exhaust port 241.
The material is accumulated on the head part of the single screw extruder 2, the gear pump 23 drives the second screw 22 to rotate rapidly, thereby properly reducing the resistance of the machine head, leading the materials to be sheared and granulated along with the second screw 22, leading part of the materials to be discharged along with the gas to the exhaust port 241, leading the materials and the gas to be collided on the arc baffle 243 of the exhaust port 241, leading the materials to be separated from the gas under the action of gravity and fall onto the second screw 22, leading the gas to pass through the plurality of arc baffles 243 and be discharged outwards, once part of small-particle materials continuously flows upwards along with the gas, when the small-particle materials fall down after impacting the arc baffle 243 again, the small-particle materials fall down to the upper end surface of the arc baffle 243 and fall down onto the second screw 22 from the liquid pouring hole 244, the arrangement of the multi-layer arc baffles 243 ensures the thoroughness of separating the gas from the materials, even in the case of material overflow, the circular arc baffle 243 is still arranged to stop the material and make it fall.
Furthermore, the arc baffle 243 is made of stainless steel, so that the material is prevented from accumulating at the exhaust port 241 to block the exhaust port 241, and the material can conveniently slide into the single-screw extruder 2.
Further, the first screw 12 and the second screw 22 both include a rod body 222 and a spiral part 221, and the thickness of the spiral part 221 of the second screw 22 gradually decreases from the rod body 222 to the outside, so as to improve the shearing force to the material.
Further, in step S3, the blast air is divided into two sections, each section of air pipe is 3m long, and each section receives material through cyclone.
Example 1
A production process of an environment-friendly cable material comprises the following steps:
s1, weighing and feeding materials, namely selecting the following raw materials in parts by weight, 40 parts of polyvinyl chloride resin, 15 parts of dioctyl terephthalate, 20 parts of calcium carbonate, 6 parts of a calcium-zinc stabilizer and 1 part of PE wax; putting the materials into a mixer in batches and stirring for 1 h;
s2, extruding thermoplastic plastics, pressing the materials into a specific double-stage extrusion device through a conical forced feeding machine, wherein the specific double-stage extrusion device comprises a double-screw extruder and a single-screw extruder, an included angle formed by the extension direction of the double-screw extruder and the extension direction of the single-screw extruder is alpha, the double-screw extruder and the single-screw extruder are connected through a bending pipe, the bending part of the bending pipe is in arc transition, the bending angle of the bending pipe is beta, the alpha and the beta are consistent and 45 degrees, the materials are subjected to two-screw rod counter-rotating mixing of the double-screw extruder at the rotating speed of 800r/min, the materials are conveyed into the single-screw extruder through the bending pipe, shearing granulation is completed under the shearing force and the friction force of the single screw rod, the shearing force is controlled on the double-screw extruder and the single-screw extruder through an electric heating mode and indirect circulating cooling water, the plasticizing temperature is 100, the circulating water amount is 1 t/h;
s3, cutting and cooling, wherein the particles of the material hot-cut from the die surface of the single screw extruder are conveyed to the tail end by a blower, and the cut particles are cooled when the material is conveyed by the blower;
s4, sieving, and separating the particles which are subjected to air blast cooling from the particles which are agglomerated together through a vibrating screen;
s5, packaging, and filling the produced particles into a packaging bag to obtain the finished product.
Example 2
A production process of an environment-friendly cable material comprises the following steps:
s1, weighing and feeding materials, namely selecting the following raw materials in parts by weight, namely 50 parts of polyvinyl chloride resin, 18 parts of dioctyl terephthalate, 22 parts of calcium carbonate, 8 parts of a calcium-zinc stabilizer and 2 parts of PE wax; the materials are put into a mixer in batches and stirred for 1.5 h;
s2, extruding thermoplastic plastics, pressing the materials into a specific double-stage extrusion device through a conical forced feeding machine, wherein the specific double-stage extrusion device comprises a double-screw extruder and a single-screw extruder, an included angle formed by the extension direction of the double-screw extruder and the extension direction of the single-screw extruder is alpha, the double-screw extruder and the single-screw extruder are connected through a bending pipe, the bending part of the bending pipe is in arc transition, the bending angle of the bending pipe is beta, the alpha and the beta are consistent and 60 degrees, the materials are subjected to different-direction rotary mixing of two screws of the double-screw extruder at a rotating speed of 850r/min, the materials are conveyed into the single-screw extruder through the bending pipe, shearing granulation is completed under the shearing force and the friction force of the single screw, the shearing force is controlled on the double-screw extruder and the single-screw extruder through an electric heating mode and indirect circulating cooling water, the plasticizing temperature is 120 ℃, the circulating water amount is 1 t/h;
s3, cutting and cooling, wherein the particles of the material hot-cut from the die surface of the single screw extruder are conveyed to the tail end by a blower, and the cut particles are cooled when the material is conveyed by the blower;
s4, sieving, and separating the particles which are subjected to air blast cooling from the particles which are agglomerated together through a vibrating screen;
s5, packaging, and filling the produced particles into a packaging bag to obtain the finished product.
Example 3
A production process of an environment-friendly cable material comprises the following steps:
s1, weighing and feeding materials, namely selecting the following raw materials in parts by weight, 60 parts of polyvinyl chloride resin, 20 parts of dioctyl terephthalate, 25 parts of calcium carbonate, 10 parts of a calcium-zinc stabilizer and 2 parts of PE wax; putting the materials into a mixer in batches and stirring for 2 hours;
s2, extruding thermoplastic plastics, pressing the materials into a specific double-stage extrusion device through a conical forced feeding machine, wherein the specific double-stage extrusion device comprises a double-screw extruder and a single-screw extruder, an included angle formed by the extension direction of the double-screw extruder and the extension direction of the single-screw extruder is alpha, the double-screw extruder and the single-screw extruder are connected through a bending pipe, the bending part of the bending pipe is in arc transition, the bending angle of the bending pipe is beta, the alpha and the beta are consistent and 60 degrees, the materials are subjected to different-direction rotary mixing of two screws of the double-screw extruder at the rotating speed of 900r/min, the materials are conveyed into the single-screw extruder through the bending pipe, shearing and granulation are completed under the shearing force and the friction force of the single screw, the shearing force and the temperature of the double-screw extruder and the single-screw extruder are controlled through an electric heating mode and indirect circulating cooling water, the plasticizing, the circulating water amount is 1 t/h;
s3, cutting and cooling, wherein the particles of the material hot-cut from the die surface of the single screw extruder are conveyed to the tail end by a blower, and the cut particles are cooled when the material is conveyed by the blower;
s4, sieving, and separating the particles which are subjected to air blast cooling from the particles which are agglomerated together through a vibrating screen;
s5, packaging, and filling the produced particles into a packaging bag to obtain the finished product.
The tensile strength of the environment-friendly cable material prepared in the embodiment 1 of the application is 14.5MPa, the hydrogen chloride emission is 3%, the production capacity per hour reaches 1400Kg, and the surface of the cable material is free of pores; the tensile strength of the environment-friendly cable material prepared in the embodiment 2 is 13.8MPa, the hydrogen chloride emission is 1.8%, the production capacity per hour reaches 1380Kg, and the surface of the cable material has no pores; the tensile strength of the environment-friendly cable material prepared in the embodiment 3 is 15.2MPa, the hydrogen chloride emission is 1%, the production capacity per hour reaches 1500Kg, and no air holes exist on the surface of the cable material. Thus example 3 is the best embodiment.
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 (7)
1. The production process of the environment-friendly cable material is characterized by comprising the following steps of:
s1, weighing and feeding materials, namely selecting 40-60 parts of polyvinyl chloride resin, 15-20 parts of dioctyl terephthalate, 20-25 parts of calcium carbonate, 6-10 parts of calcium zinc stabilizer and 1-2 parts of PE wax; adding the materials into a mixer in batches and stirring for 1-2 h;
s2, extruding thermoplastic plastics, pressing materials into a specific double-stage extrusion device through a conical forced feeding machine, wherein the specific double-stage extrusion device comprises a double-screw extruder and a single-screw extruder, the extension direction of the double-screw extruder and the extension direction of the single-screw extruder form an included angle alpha, the double-screw extruder and the single-screw extruder are connected through a bending pipe, the bending part of the bending pipe is in arc transition, the bending angle of the bending pipe is beta, the alpha and the beta are consistent and are 45-60 degrees, the materials are subjected to heterodromous rotation mixing of the two screws of the double-screw extruder at a rotating speed of 800-900r/min, the materials are conveyed into the single-screw extruder through the bending pipe and are subjected to shearing force and friction force of the single screw to complete shearing granulation, and temperature control is realized on the double-screw extruder and the single-screw extruder through an electric heating mode and indirect circulating cooling water, the plasticizing temperature is 100-150 ℃, and the circulating water amount is 1 t/h;
s3, cutting and cooling, wherein the particles of the material hot-cut from the die surface of the single screw extruder are conveyed to the tail end by a blower, and the cut particles are cooled when the material is conveyed by the blower;
s4, sieving, and separating the particles which are subjected to air blast cooling from the particles which are agglomerated together through a vibrating screen;
s5, packaging, and filling the produced particles into a packaging bag to obtain the finished product.
2. The process for producing environment-friendly cable material as claimed in claim 1, wherein in the step S2, the specific double-stage extrusion device comprises a double-screw extruder (1) and a single-screw extruder (2), and the double-screw extruder (1) and the single-screw extruder (2) are connected through a bending pipe (3);
the double-screw extruder (1) comprises a double-screw extrusion shell (11) and two first screws (12) which are arranged in parallel and are arranged in the double-screw extrusion shell (11), a feed hopper (13) is arranged above one end of the double-screw extrusion shell (11) far away from the single-screw extruder (2), the demolding surface of the double-screw extrusion shell (11) is communicated with the bending pipe (3), the single-screw extruder (2) comprises a single-screw extrusion shell (21) and a second screw (22) arranged in the single-screw extrusion shell (21), one end of the first screw (12) far away from the bending pipe (3) and one end of the second screw (22) close to the bending pipe (3) respectively penetrate through the corresponding double-screw extrusion shell (11) and the single-screw extrusion shell (21) and are connected with a gear pump (23), a discharge hole of the bent pipe (3) is arranged above the second screw (22);
the single-screw extrusion shell (21) and the double-screw extrusion shell (11) are sequentially provided with a heating chamber (14) and a cooling chamber (15), a temperature sensor (16) is arranged in the cooling chamber (15), a plurality of heating pipes (17) which are uniformly distributed are arranged in the heating chamber (14), two ends of the cooling chamber (15) are connected with circulating pipes (18), and circulating pumps (19) are arranged on the circulating pipes (18).
3. The production process of the environment-friendly cable material as claimed in claim 2, wherein an exhaust assembly (24) is arranged at one end, close to the bent pipe (3), of the single-screw extrusion casing (21), the exhaust assembly (24) comprises an exhaust port (241) and a stainless steel net (242) arranged in the exhaust port (241), the stainless steel net (242) is horizontally arranged, a plurality of arc baffles (243) which are arranged in a vertically staggered manner are arranged in the exhaust port (241), openings of the arc baffles (243) are arranged downwards, and the arc baffles (243) are all arranged at lower positions of the stainless steel net (242).
4. The production process of the environment-friendly cable material as claimed in claim 3, wherein a liquid pouring hole (244) is formed at a position where the arc baffle (243) is connected with the exhaust port (241), and the liquid pouring hole (244) is arranged in an upward inclined manner towards the axis of the exhaust port (241).
5. The production process of the environment-friendly cable material as claimed in claim 3 or 4, wherein the arc baffle (243) is made of stainless steel.
6. The production process of the environment-friendly cable material as claimed in any one of claims 2 to 4, wherein the first screw (12) and the second screw (22) each comprise a body portion (222) and a spiral portion (221), and the thickness of the spiral portion (221) of the second screw (22) gradually decreases from the body portion (222) to the outside.
7. The process for producing environment-friendly cable material as claimed in claim 1, wherein in the step S3, the blowing air is divided into two sections, each section of air pipe is 3m long, and each section of air pipe receives material through cyclone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010466418.7A CN111559025A (en) | 2020-05-28 | 2020-05-28 | Production process of environment-friendly cable material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010466418.7A CN111559025A (en) | 2020-05-28 | 2020-05-28 | Production process of environment-friendly cable material |
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| CN111559025A true CN111559025A (en) | 2020-08-21 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112277187A (en) * | 2020-10-23 | 2021-01-29 | 常德七星泰塑业有限公司 | Preparation method of PVC particles for PVC pipe fitting hot runner injection |
| CN112571659A (en) * | 2020-11-26 | 2021-03-30 | 湖南科森高分子材料科技有限公司 | Production process of silane crosslinked cable material with high heat resistance |
| CN112829261A (en) * | 2020-12-31 | 2021-05-25 | 浙江安吉锦韵无纺布有限公司 | Non-woven fabrics waste material reuse equipment |
| CN114311364A (en) * | 2021-12-16 | 2022-04-12 | 南通市博创新材料有限公司 | Integrated preparation facilities of compound environmental protection cable material |
| CN115058071A (en) * | 2022-06-22 | 2022-09-16 | 百通赫思曼工业（苏州）有限公司 | Crosslinked polyethylene cable material for solving problem of insecure lettering |
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2020
- 2020-05-28 CN CN202010466418.7A patent/CN111559025A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112277187A (en) * | 2020-10-23 | 2021-01-29 | 常德七星泰塑业有限公司 | Preparation method of PVC particles for PVC pipe fitting hot runner injection |
| CN112571659A (en) * | 2020-11-26 | 2021-03-30 | 湖南科森高分子材料科技有限公司 | Production process of silane crosslinked cable material with high heat resistance |
| CN112829261A (en) * | 2020-12-31 | 2021-05-25 | 浙江安吉锦韵无纺布有限公司 | Non-woven fabrics waste material reuse equipment |
| CN114311364A (en) * | 2021-12-16 | 2022-04-12 | 南通市博创新材料有限公司 | Integrated preparation facilities of compound environmental protection cable material |
| CN114311364B (en) * | 2021-12-16 | 2022-12-09 | 南通市博创新材料有限公司 | Integrated preparation facilities of compound environmental protection cable material |
| CN115058071A (en) * | 2022-06-22 | 2022-09-16 | 百通赫思曼工业（苏州）有限公司 | Crosslinked polyethylene cable material for solving problem of insecure lettering |
| CN115058071B (en) * | 2022-06-22 | 2023-08-29 | 百通赫思曼工业（苏州）有限公司 | Crosslinked polyethylene cable material for solving problem of unstable printing |
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