CN112920498A - Flame-retardant process and processing equipment for halogen-free low-smoke polyolefin cable - Google Patents
Flame-retardant process and processing equipment for halogen-free low-smoke polyolefin cable Download PDFInfo
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- CN112920498A CN112920498A CN202110086608.0A CN202110086608A CN112920498A CN 112920498 A CN112920498 A CN 112920498A CN 202110086608 A CN202110086608 A CN 202110086608A CN 112920498 A CN112920498 A CN 112920498A
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- 239000003063 flame retardant Substances 0.000 title claims abstract description 68
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 title claims abstract description 65
- 238000012545 processing Methods 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 18
- 229920000098 polyolefin Polymers 0.000 title claims abstract description 18
- 239000000779 smoke Substances 0.000 title claims abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 32
- 239000002994 raw material Substances 0.000 claims abstract description 19
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 16
- 239000006057 Non-nutritive feed additive Substances 0.000 claims abstract description 13
- 239000011347 resin Substances 0.000 claims abstract description 13
- 229920005989 resin Polymers 0.000 claims abstract description 13
- 239000011159 matrix material Substances 0.000 claims abstract description 12
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 10
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 10
- 239000003365 glass fiber Substances 0.000 claims abstract description 10
- 239000000314 lubricant Substances 0.000 claims abstract description 10
- 238000003756 stirring Methods 0.000 claims description 17
- 238000001816 cooling Methods 0.000 claims description 9
- 238000001125 extrusion Methods 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 7
- 239000007787 solid Substances 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 235000019504 cigarettes Nutrition 0.000 claims description 3
- 239000003086 colorant Substances 0.000 claims description 3
- 238000005469 granulation Methods 0.000 claims description 3
- 230000003179 granulation Effects 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- 238000010030 laminating Methods 0.000 claims description 2
- 238000005265 energy consumption Methods 0.000 abstract description 6
- 238000010276 construction Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000004075 alteration Effects 0.000 description 1
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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
- B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
- B29B7/06—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices
- B29B7/10—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary
- B29B7/12—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with single shaft
- B29B7/16—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with single shaft with paddles or arms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
- B29B7/22—Component parts, details or accessories; Auxiliary operations
- B29B7/24—Component parts, details or accessories; Auxiliary operations for feeding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
- B29B7/22—Component parts, details or accessories; Auxiliary operations
- B29B7/26—Component parts, details or accessories; Auxiliary operations for discharging, e.g. doors
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0807—Copolymers of ethene with unsaturated hydrocarbons only containing more than three carbon atoms
- C08L23/0815—Copolymers of ethene with aliphatic 1-olefins
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
- C08L23/0853—Vinylacetate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/22—Halogen free composition
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
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Abstract
The invention relates to the technical field of cable processing, in particular to a flame retardant process and processing equipment of a halogen-free low-smoke polyolefin cable. According to the invention, the matrix resin, the compatilizer, the flame retardant, the glass fiber, the anti-dripping agent, the antioxidant, the lubricant and the processing aid are used as raw materials to be mixed and processed into the flame-retardant material, the flame-retardant material is externally connected in a non-contact manner in the whole process, the processing quality of the flame-retardant material is improved, meanwhile, the equipment is matched with each other, the processing energy consumption can be reduced, the equipment and the processing technology are utilized to produce the cable, the construction efficiency can be improved, the energy consumption can be reduced, the product quality can be improved, and the method is suitable.
Description
Technical Field
The invention relates to the technical field of cable processing, in particular to a flame retardant process and processing equipment of a halogen-free low-smoke polyolefin cable.
Background
Along with the continuous expansion of the industry scales of electric power, communication, rail transit, automobiles, shipbuilding and the like, the demand of wires and cables is also rapidly increased, the cable market is expected to have huge development potential in future, and the existing flame-retardant layer is processed in the cable processing process, the finished product effect is not optimized, so that the flame-retardant process and the processing equipment of the halogen-free low-smoke polyolefin cable are provided for solving the problems.
Disclosure of Invention
The invention aims to provide a flame retardant process and processing equipment of a halogen-free low-smoke polyolefin cable, wherein a flame retardant material is prepared by mixing and processing matrix resin, a compatilizer, a flame retardant, glass fiber, an anti-dripping agent, an antioxidant, a lubricant and a processing aid which are used as raw materials.
In order to achieve the purpose, the invention provides the following technical scheme:
a flame retardant process of a halogen-free low-smoke polyolefin cable comprises the following steps:
1. weighing matrix resin, a compatilizer, a flame retardant, glass fiber, an anti-dripping agent, an antioxidant, a lubricant and a processing aid in raw materials used for the flame-retardant material according to specific gravity, sequentially putting the raw materials into a stirring barrel in sequence, mixing the raw materials and stirring, wherein the raw materials of the flame-retardant material are as follows according to the weight ratio: 100-150 parts of matrix resin, 15-20 parts of compatilizer, 120-160 parts of flame retardant, 5-10 parts of glass fiber, 2-5 parts of antioxidant, 2-5 parts of lubricant and 3-5 parts of processing aid;
2. the mixed raw materials are put into a double-thread granulator for granulation and extrusion to obtain the flame retardant material, wherein the temperature of each section of the machine body of the double-thread granulator is as follows in sequence: 100-130 ℃ (conveying section), 115-130 ℃ (melting section), 125-130 ℃ (mixing section), 135-140 ℃ (exhaust section), 140-145 ℃ (metering section), wherein the head temperature of the twin-screw extruder is not more than 160 ℃, the main machine rotation speed is 200-400rpm, and the feeding rotation speed is 20-50 rpm;
3. introducing the pelletized flame-retardant material into a storage box, introducing the flame-retardant material into two groups of single-thread extruders by using pipelines, and performing insulation extrusion on cable cores, wherein the extrusion temperature is controlled to be between 100 and 155 ℃ to obtain a double-layer flame-retardant layer, wherein the thickness ratio of the inner-layer flame-retardant layer to the outer-layer flame-retardant layer is 1: 2;
4. and (3) cooling and forming the extruded cable by water cooling to obtain the flame-retardant layer of the cable, wherein the water cooling temperature is 45-80 ℃.
The base resin comprises a mixture of EVA, POE and PE, wherein the mixture ratio of the EVA, the POE and the PE is EVA5-8 parts: POE6-15 parts: and (3) 4-6 parts of PE.
Wherein the processing aid comprises any one or a mixture of more than two of a coloring agent, an anti-UV agent, an ant-proof agent and a rat-proof agent.
The utility model provides a there is not fire-retardant processing equipment of steamed low cigarette polyolefin cable, includes agitator, twin-screw granulator, stock tank and two sets of single screw extruder, the discharge gate of agitator passes through the feed inlet of pipe connection twin-screw granulator, the stock tank is connected to the discharge gate of creating the screw granulator, the discharge gate of stock tank bottom passes through the pipeline and connects the feed inlet of two sets of single screw extruder respectively.
The fixed agitator motor that is provided with in agitator top, the kinetic energy output shaft of agitator motor bottom stretches into in the agitator, the fixed agitator that is provided with in kinetic energy output shaft bottom of agitator motor, the fixed several groups charging means that is provided with in agitator top, the charging means top is provided with the solid charging means, the fixed control box that is provided with on the left side inner wall of agitator, from last down fixed converter, relay and the PLC controller of having set gradually on the left side inner wall of control box inside.
The stirring motor is connected with the frequency converter through a line, the frequency converter is connected with the relay through a line, the control lines of the relay and the frequency converter are respectively connected with the PLC, and the control line of the solid feeder is respectively connected with the PLC.
The inner wall of the storage box is provided with a heating device in a fitting mode, and a control circuit of the heating device is connected with the PLC.
Compared with the prior art, the invention has the beneficial effects that: by using matrix resin, a compatilizer, a flame retardant, glass fiber, an anti-dripping agent, an antioxidant, a lubricant and a processing aid as raw materials to be mixed and processed into the flame-retardant material, the flame-retardant material is externally connected in a whole process without contact, the processing quality of the flame-retardant material is improved, meanwhile, the equipment is matched with each other, the processing energy consumption can be reduced, the equipment and the processing technology are used for producing cables, the construction efficiency can be improved, the energy consumption is reduced, the product quality is improved, and the flame-retardant material is suitable for popularization and use.
Drawings
FIG. 1 is a schematic view of the overall structure of a flame retardant process and processing equipment for a halogen-free low-smoke polyolefin cable according to the present invention.
In the figure: 1. a stirring barrel; 2. a double-screw granulator; 3. a material storage box; 4. a single screw extruder; 5. a stirring motor; 6. a feeder; 7. a solids feeder; 8. a stirrer; 9. and a control box.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
For better understanding of the above technical solutions, the following detailed descriptions will be provided in conjunction with the drawings and the detailed description of the present invention.
Example (b):
referring to fig. 1, the present embodiment provides a technical solution:
a flame retardant process of a halogen-free low-smoke polyolefin cable comprises the following steps:
1. weighing matrix resin, a compatilizer, a flame retardant, glass fiber, an anti-dripping agent, an antioxidant, a lubricant and a processing aid in raw materials used for the flame-retardant material according to specific gravity, sequentially putting the raw materials into a stirring barrel in sequence, mixing the raw materials and stirring, wherein the raw materials of the flame-retardant material are as follows according to the weight ratio: 100-150 parts of matrix resin, 15-20 parts of compatilizer, 120-160 parts of flame retardant, 5-10 parts of glass fiber, 2-5 parts of antioxidant, 2-5 parts of lubricant and 3-5 parts of processing aid;
2. the mixed raw materials are put into a double-thread granulator for granulation and extrusion to obtain the flame retardant material, wherein the temperature of each section of the machine body of the double-thread granulator is as follows in sequence: 100-130 ℃ (conveying section), 115-130 ℃ (melting section), 125-130 ℃ (mixing section), 135-140 ℃ (exhaust section), 140-145 ℃ (metering section), wherein the head temperature of the twin-screw extruder is not more than 160 ℃, the main machine rotation speed is 200-400rpm, and the feeding rotation speed is 20-50 rpm;
3. introducing the pelletized flame-retardant material into a storage box, introducing the flame-retardant material into two groups of single-thread extruders by using pipelines, and performing insulation extrusion on cable cores, wherein the extrusion temperature is controlled to be between 100 and 155 ℃ to obtain a double-layer flame-retardant layer, wherein the thickness ratio of the inner-layer flame-retardant layer to the outer-layer flame-retardant layer is 1: 2;
4. and (3) cooling and forming the extruded cable by water cooling to obtain the flame-retardant layer of the cable, wherein the water cooling temperature is 45-80 ℃.
Wherein, the matrix resin comprises a mixture of EVA, POE and PE, wherein the mixture ratio of the EVA, the POE and the PE is EVA5-8 parts: POE6-15 parts: and (3) 4-6 parts of PE.
Wherein the processing aid comprises any one or a mixture of more than two of a colorant, an anti-UV agent, an ant-proof agent and a rat-proof agent.
The utility model provides a there is not fire-retardant processing equipment of steamed low cigarette polyolefin cable, includes agitator 1, twin-screw granulator 2, stock bin 3 and two sets of single screw extruder 4, and the discharge gate of agitator 1 passes through the feed inlet of pipe connection twin-screw granulator 2, creates the discharge gate of screw granulator 2 and connects stock bin 3, and the discharge gate of 3 bottoms of stock bin passes through the pipeline and connects the feed inlet of two sets of single screw extruder 4 respectively.
Wherein, the top of the stirring barrel 1 is fixedly provided with a stirring motor 5, a kinetic energy output shaft at the bottom of the stirring motor 5 extends into the stirring barrel 1, the bottom of the kinetic energy output shaft of the stirring motor 5 is fixedly provided with a stirrer 8, the top of the stirring barrel 1 is fixedly provided with a plurality of groups of feeders 6, the top of the feeder 6 is provided with a solid feeder 7, the inner wall of the left side of the stirring barrel 1 is fixedly provided with a control box 9, the inner wall of the left side inside the control box 9 is fixedly provided with a frequency converter from top to bottom in sequence, relay and PLC controller, agitator motor 5 passes through the line connection converter, and the converter passes through the line connection relay, and the PLC controller is connected respectively to the control scheme of relay and converter, and the PLC controller is connected respectively to the control scheme of solid charging means 7, and the laminating is provided with heating device on the 3 inner walls of material storage box, and heating device's control scheme connects the PLC controller.
The working principle is as follows: by using matrix resin, a compatilizer, a flame retardant, glass fiber, an anti-dripping agent, an antioxidant, a lubricant and a processing aid as raw materials to be mixed and processed into the flame-retardant material, the flame-retardant material is externally connected in a whole process without contact, the processing quality of the flame-retardant material is improved, meanwhile, the equipment is matched with each other, the processing energy consumption can be reduced, the equipment and the processing technology are used for producing cables, the construction efficiency can be improved, the energy consumption is reduced, the product quality is improved, and the flame-retardant material is suitable for popularization and use.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A flame retardant process of a halogen-free low-smoke polyolefin cable is characterized in that: the method comprises the following steps:
1) weighing matrix resin, a compatilizer, a flame retardant, glass fiber, an anti-dripping agent, an antioxidant, a lubricant and a processing aid in raw materials used for the flame-retardant material according to specific gravity, sequentially putting the raw materials into a stirring barrel in sequence, mixing the raw materials and stirring, wherein the raw materials of the flame-retardant material are as follows according to the weight ratio: 100-150 parts of matrix resin, 15-20 parts of compatilizer, 120-160 parts of flame retardant, 5-10 parts of glass fiber, 2-5 parts of antioxidant, 2-5 parts of lubricant and 3-5 parts of processing aid;
2) the mixed raw materials are put into a double-thread granulator for granulation and extrusion to obtain the flame retardant material, wherein the temperature of each section of the machine body of the double-thread granulator is as follows in sequence: 100-130 ℃ (conveying section), 115-130 ℃ (melting section), 125-130 ℃ (mixing section), 135-140 ℃ (exhaust section), 140-145 ℃ (metering section), wherein the head temperature of the twin-screw extruder is not more than 160 ℃, the main machine rotation speed is 200-400rpm, and the feeding rotation speed is 20-50 rpm;
3) introducing the pelletized flame-retardant material into a storage box, introducing the flame-retardant material into two groups of single-thread extruders by using pipelines, and performing insulation extrusion on cable cores, wherein the extrusion temperature is controlled to be between 100 and 155 ℃ to obtain a double-layer flame-retardant layer, wherein the thickness ratio of the inner-layer flame-retardant layer to the outer-layer flame-retardant layer is 1: 2;
4) and (3) cooling and forming the extruded cable by water cooling to obtain the flame-retardant layer of the cable, wherein the water cooling temperature is 45-80 ℃.
2. The flame retardant process of the halogen-free low-smoke polyolefin cable according to claim 1, characterized in that: the matrix resin comprises a mixture of EVA, POE and PE, wherein the mixture ratio of the EVA, the POE and the PE is that the EVA5-8 parts: POE6-15 parts: and (3) 4-6 parts of PE.
3. The flame retardant process of the halogen-free low-smoke polyolefin cable according to claim 1, characterized in that: the processing aid comprises any one or a mixture of more than two of a coloring agent, an anti-UV agent, an ant-proof agent and a rat-proof agent.
4. The utility model provides a fire-retardant processing equipment of steamed low cigarette polyolefin cable, includes agitator (1), twin-screw granulator (2), material storage box (3) and two sets of single screw extruder (4), its characterized in that: the discharge gate of agitator (1) passes through the feed inlet of pipe connection twin-screw granulator (2), material storage box (3) is connected to the discharge gate of creating screw granulator (2), the feed inlet of two sets of single screw extruder (4) is connected respectively through the pipeline to the discharge gate of material storage box (3) bottom.
5. The flame retardant processing equipment of halogen-free low smoke polyolefin cable according to claim 4, characterized in that: agitator (1) top is fixed and is provided with agitator motor (5), the kinetic energy output shaft of agitator motor (5) bottom stretches into in agitator (1), the fixed agitator (8) that is provided with in kinetic energy output shaft bottom of agitator motor (5), the fixed several feeder (6) that are provided with in agitator (1) top, feeder (6) top is provided with solid charging means (7), the fixed control box (9) that is provided with on the left side inner wall of agitator (1), from last down fixed converter, relay and the PLC controller of being provided with in proper order on the left side inner wall of control box (9) inside.
6. The flame retardant processing equipment of halogen-free low smoke polyolefin cable according to claim 5, characterized in that: the stirring motor (5) is connected with a frequency converter through a line, the frequency converter is connected with a relay through a line, the control lines of the relay and the frequency converter are respectively connected with a PLC (programmable logic controller), and the control line of the solid feeder (7) is respectively connected with the PLC.
7. The flame retardant processing equipment of halogen-free low smoke polyolefin cable according to claim 4, characterized in that: the inner wall of the storage box (3) is provided with a heating device in a laminating manner, and a control circuit of the heating device is connected with the PLC.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110086608.0A CN112920498A (en) | 2021-01-22 | 2021-01-22 | Flame-retardant process and processing equipment for halogen-free low-smoke polyolefin cable |
| CN202310721648.7A CN116589785A (en) | 2021-01-22 | 2021-01-22 | Flame-retardant technology and processing equipment for halogen-free low-smoke polyolefin cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110086608.0A CN112920498A (en) | 2021-01-22 | 2021-01-22 | Flame-retardant process and processing equipment for halogen-free low-smoke polyolefin cable |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310721648.7A Division CN116589785A (en) | 2021-01-22 | 2021-01-22 | Flame-retardant technology and processing equipment for halogen-free low-smoke polyolefin cable |
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| Publication Number | Publication Date |
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| CN112920498A true CN112920498A (en) | 2021-06-08 |
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| CN202310721648.7A Pending CN116589785A (en) | 2021-01-22 | 2021-01-22 | Flame-retardant technology and processing equipment for halogen-free low-smoke polyolefin cable |
| CN202110086608.0A Pending CN112920498A (en) | 2021-01-22 | 2021-01-22 | Flame-retardant process and processing equipment for halogen-free low-smoke polyolefin cable |
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| CN116589785A (en) | 2023-08-15 |
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