CN113563675B - Special high-electrical-performance polyvinyl chloride cable material for semi-hard ultra-high voltage cable - Google Patents
Special high-electrical-performance polyvinyl chloride cable material for semi-hard ultra-high voltage cable Download PDFInfo
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- 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
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Abstract
The invention provides a special high-electrical-performance polyvinyl chloride cable material for a semi-hard ultrahigh-voltage cable, and belongs to the technical field of new materials. It has solved the problem that prior art exists stability poor. The special high-electrical-performance polyvinyl chloride cable material for the semi-hard ultrahigh-voltage cable comprises the following components: polyvinyl chloride resin: 100 parts of plasticizer: 30-50 parts of filler: 20-60 parts of flame retardant: 6-20 parts of stabilizer: 7-12 parts of a lubricant: 1-4 parts of processing modifier: 2-20 parts of antioxidant: 0.5-1.5 parts. The polyvinyl chloride cable material with high electrical property special for the semi-hard ultra-high voltage cable has high stability.
Description
Technical Field
The invention belongs to the technical field of new materials, and relates to a special high-electrical-performance polyvinyl chloride cable material for a semi-hard ultrahigh-voltage cable.
Background
According to the division of the IEC standard and the national standard of China on the cable product standard, the production and use conditions of China are combined, the low voltage is (1-3) kV, the electrical performance of the low voltage cable is not considered, and the electrical performance of the low voltage cable is naturally met as long as the mechanical performance and the technological performance of the low voltage cable are designed; the medium voltage is (6-35) kV, and is mainly used for power distribution; the high voltage is (66-110) kV; the ultra-high voltage is (220-500) kV; the extra-high voltage is (750-1000) kV, and the high-voltage extra-high voltage is mainly used for power transmission.
Cable materials generally fall into three general categories of materials, conductor, insulation and jacket. From the history of cable development in China, cable engineering is manufactured in advance, the advanced material is manufactured, and the cable plant is manufactured without insulating material, so that the insulating material is seriously lagged, and the requirements of cable manufacture and cable engineering cannot be met.
Because domestic petroleum and petrochemical enterprises do not directly produce cable materials, and professional cable material production enterprises are limited by problems of material cleanliness, secondary pollution in intermediate production links and the like, the quality reliability of the produced ultrahigh-voltage insulating material still cannot be accepted by most cable production enterprises; therefore, the insulating materials for ultra-high voltage are still mainly imported materials such as northern Europe chemical industry, dow, LG and Han Hua.
The sheath material for the ultra-high voltage cable is divided into two main types, namely a PVC sheath material and a PE sheath material, wherein the PVC sheath material is also called a high-electrical-property PVC sheath material, has typical performance characteristics of high strength, high volume resistivity, cracking resistance, low thermal deformation, good flame retardant property, moderate hardness and the like, and has excellent processing property.
The PE sheath material for ultrahigh pressure is generally black medium-density and high-density black polyethylene sheath material, and has excellent electrical property, environmental stress cracking resistance, processability and apparent property besides the properties of the conventional polyethylene cable material.
The PVC resin has excellent physical and mechanical properties and electrical insulation properties, has the characteristics of flame resistance, chemical corrosion resistance, oil resistance, water resistance and the like, and is an ideal insulating and sheathing material in the wire and cable industry. Although the call for replacing PVC materials with halogen-free materials in recent years is higher, PVC has the advantages (such as low price, good flame retardance, simple processing equipment and process, wide adjustable hardness range, good electrical insulation, oil resistance, chemical reagent resistance and the like) which cannot be replaced in a short period, so that PVC still has a great application market in the current wire and cable material field.
In particular to the aspect of manufacturing the ultra-high voltage cable, the PVC sheath material has the ultra-high cost performance, excellent cracking resistance, flame retardance and other performances, so that the PVC sheath material still firmly occupies a certain market position. The cable material for ultrahigh voltage is used as a special cable material, so that the current domestic high-quality suppliers are few, and various products have uneven quality, so that the quality of a cable finished product is unstable.
In view of the above, the development of the special high-electrical-performance polyvinyl chloride cable material for the ultra-high voltage cable can further improve the quality of the product, promote the product to gradually develop towards the middle and high end directions of environmental protection, high performance and high added value, and can continuously improve the influence and competitiveness of the product in the market.
Disclosure of Invention
The invention aims at solving the problems in the prior art and provides a special high-electrical-performance polyvinyl chloride cable material for a semi-hard ultra-high voltage cable, which is environment-friendly, high in insulation, high in resistance, good in flame retardant property, wear-resistant and not prone to cracking.
The invention also aims to provide a mixing device for the special high-electrical-performance polyvinyl chloride cable material for the semi-hard ultrahigh-voltage cable.
The first object of the present invention can be achieved by the following technical scheme:
the special high-electrical-performance polyvinyl chloride cable material for the semi-hard ultrahigh-voltage cable is characterized by comprising the following components:
polyvinyl chloride resin: 100 parts of the total weight of the mixture,
and (3) a plasticizer: 30-50 parts of a compound containing,
filler: 20-60 parts of a compound containing,
flame retardant: 6-20 parts of a compound containing,
stabilizing agent: 7-12 parts of a base material, wherein the base material comprises,
and (3) a lubricant: 1-4 parts of a compound, wherein,
processing modifier: 2-20 parts of a compound of formula (I),
an antioxidant: 0.5-1.5 parts.
In the special high-electrical-performance polyvinyl chloride cable material for the semi-hard ultrahigh-voltage cable, the polyvinyl chloride resin is polyvinyl chloride resin with an average polymerization degree of 1000-2500.
In the special high-electrical-property polyvinyl chloride cable material for the semi-hard ultrahigh-voltage cable, the plasticizer is one or more of trioctyl trimellitate, dioctyl sebacate, dioctyl terephthalate and epoxidized soybean oil.
In the special high-electrical-performance polyvinyl chloride cable material for the semi-hard ultrahigh-voltage cable, the filler is one or more of nano calcined kaolin, nano calcium carbonate, superfine heavy calcium carbonate, talcum powder, white carbon black and glass beads.
In the special high-electrical-performance polyvinyl chloride cable material for the semi-hard ultrahigh-voltage cable, the flame retardant is one or more of antimony trioxide, zinc borate, aluminum hydroxide, magnesium hydroxide, silicon flame retardant, hydrotalcite, nano montmorillonite and magnesium aluminum silicate compound.
In the special high-electrical-performance polyvinyl chloride cable material for the semi-hard ultrahigh-voltage cable, the stabilizer is one or more of high-efficiency temperature-resistant calcium-zinc composite stabilizers.
In the special high-electrical-performance polyvinyl chloride cable material for the semi-hard ultrahigh-voltage cable, the lubricant is one or more of stearic acid, polyethylene wax, oxidized polyethylene wax, ethylene bis stearamide, zinc stearate and calcium stearate.
In the special high-electrical-performance polyvinyl chloride cable material for the semi-hard ultrahigh-voltage cable, the processing modifier is one or more of acrylic ester core-shell copolymer, chlorinated polyethylene, ethylene-butene copolymer and ethylene-octene copolymer.
In the special high-electrical-property polyvinyl chloride cable material for the semi-hard ultrahigh-voltage cable, the antioxidant is one or more of pentaerythritol tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ], 2-bis (4-hydroxyphenyl) propane and N, N' -bis [ beta (3, 5-di-tert-butyl-4-hydroxyphenyl) propionyl ] hydrazine.
The prepared special high-electrical-performance polyvinyl chloride cable material for the semi-hard ultrahigh-voltage cable has the following parameter values:
the special high-electrical-performance polyvinyl chloride cable material for the semi-hard ultrahigh-voltage cable is environment-friendly, insulating, high in resistance, good in flame retardant property, excellent in processability, wear-resistant, not prone to cracking, high in cost performance and capable of being produced in an industrial scale.
The second object of the present invention can be achieved by the following technical means:
the utility model provides a special high electric property polyvinyl chloride cable material's of semi-hard ultra-high voltage cable compounding device, is including being the body of tube-shape, its characterized in that, this internal baffle that has linked firmly and baffle separate the body into two upper and lower adjacent cavitys: go up cavity and lower cavity, still include pan feeding pipe, discharging pipe, collecting hopper and whirlwind subassembly, above-mentioned pan feeding pipe outer end is used for being linked together with the material storage department, pan feeding pipe inner end links firmly on body upper portion and pan feeding pipe is linked together with last cavity, above-mentioned collecting hopper is circular cone form and collecting hopper links firmly on the baffle, above-mentioned discharging pipe upper end is connected and communicates with each other with the collecting hopper lower extreme, the body lower part is stretched out to the discharging pipe lower extreme, above-mentioned whirlwind subassembly links firmly in body lateral part and whirlwind subassembly can be to the air current that the cavity bottom input is the spiral direction flow.
The material is input into the upper cavity of the body by the feeding pipe, the cyclone component inputs spiral air flow flowing at high speed to the bottom of the upper cavity, the material is fully mixed in the upper cavity under the action of the high-speed rotating air flow, and the mixed material is accumulated in the collecting hopper.
The mixed materials can smoothly enter the discharging pipe along the collecting hopper, and the fully mixed materials are conveyed to the set position through the discharging pipe.
In the mixing device of the special high-electrical-performance polyvinyl chloride cable material for the semi-hard ultrahigh-voltage cable, the cyclone assembly comprises a fan and a spiral air pipe, the fan is fixedly connected to the outer side of the body, the lower end of the air pipe is communicated with an outlet of the fan, and the upper end of the air pipe is located at the bottom of the upper cavity.
In the operation process of the fan, the air flow entering the upper cavity body under the action of the air pipe flows at a high speed along the spiral direction.
In the mixing device of the special high-electrical-performance polyvinyl chloride cable material for the semi-hard ultrahigh-voltage cable, the partition plate is provided with the penetrating connecting hole, and the air pipe is penetrated at the connecting hole.
The separator has two functions:
firstly, dividing a body into two cavities which are adjacent up and down stably;
and the second connecting hole is matched with the air pipe, so that the air pipe is stably connected to the partition plate.
In the mixing device of the special high-electrical-performance polyvinyl chloride cable material for the semi-hard ultrahigh-voltage cable, the outer side of the air pipe is abutted against the inner side of the body.
The structure avoids a relatively large gap between the air pipe and the inner side of the body, and ensures that vibration noise occurs in the operation process of the whole device.
In the mixing device of the special high-electrical-performance polyvinyl chloride cable material for the semi-hard ultrahigh-voltage cable, a supporting cylinder and a contact cylinder sleeved on the discharging pipe are further arranged in the lower cavity, the supporting cylinder is made of rigid materials, the contact cylinder is made of flexible materials, the lower end of the contact cylinder is abutted against the upper end of the supporting cylinder, and the upper end of the contact cylinder is in surface contact with the air pipe.
Because the height distance between the air pipe and the inner bottom of the main body is relatively large, the height of the contact cylinder is shortened through the support cylinder, and the rigid support cylinder also has good stability.
The supporting cylinder is made of hard plastic materials, so that the stability of the supporting cylinder can be guaranteed, and the supporting cylinder is light in weight.
In the mixing device of the special high-electrical-performance polyvinyl chloride cable material for the semi-hard ultrahigh-voltage cable, the contact cylinder is made of rubber materials.
The flexible contact cylinder can avoid rigid contact with the lower end of the air pipe, so that the stability of the air pipe is effectively improved.
In the mixing device of the special high-electrical-performance polyvinyl chloride cable material for the semi-hard ultrahigh-voltage cable, the upper end of the supporting cylinder is provided with the annular concave positioning groove, the lower end of the contact cylinder is provided with the positioning edge matched with the positioning groove, and the positioning edge is embedded in the positioning groove.
The positioning edge is embedded in the positioning groove, so that the contact cylinder and the support cylinder are stably connected.
Compared with the prior art, the special high-electrical-performance polyvinyl chloride cable material for the semi-rigid ultrahigh-voltage cable is environment-friendly, insulating, high in resistance, good in flame retardant property, excellent in processability, wear-resistant, not prone to cracking, high in cost performance and high in applicability, and can be produced in industrial quantity.
Simultaneously, this compounding device enables the material in the upper chamber of body along with high-speed spiral direction air current is rotatory together, consequently, the material can intensive mixing in the upper chamber, consequently, its mixing speed is fast and mix fully, has very high practical value.
Drawings
Fig. 1 is a schematic structural diagram of a mixing device of a special high-electrical-performance polyvinyl chloride cable material for a semi-rigid ultra-high voltage cable.
In the figure, 1, a body; 1a, an upper cavity; 1b, a lower cavity; 2. a partition plate; 3. a feeding pipe; 4. a discharge pipe; 5. a collecting hopper; 6. a blower; 7. an air duct; 8. a support cylinder; 8a, a positioning groove; 9. a contact cylinder; 9a, positioning edge.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, are intended to fall within the scope of the present invention.
It is noted that when an element is referred to as being "mounted on" another element, it can be directly mounted on the other element or intervening elements may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "or/and" as used herein includes any and all combinations of one or more of the associated listed items.
Example 1
The special high-electrical-performance polyvinyl chloride cable material for the semi-hard ultrahigh-voltage cable comprises the following components:
polyvinyl chloride resin: 100 parts of the total weight of the mixture,
and (3) a plasticizer: 30 parts of the total weight of the mixture,
filler: 20 parts of a mixture of two or more components,
flame retardant: 6 parts of the components are mixed together,
stabilizing agent: 7 parts of the components in parts by weight,
and (3) a lubricant: 1 part of the total weight of the mixture,
processing modifier: 2 parts of the components are mixed together,
an antioxidant: 0.5 part.
The polyvinyl chloride resin is polyvinyl chloride resin with average polymerization degree of 1000.
The plasticizer is one or more of trioctyl trimellitate, dioctyl sebacate, dioctyl terephthalate and epoxidized soybean oil.
The filler is one or more of nano calcined kaolin, nano calcium carbonate, superfine heavy calcium carbonate, talcum powder, white carbon black and glass beads.
The flame retardant is one or more of antimony trioxide, zinc borate, aluminum hydroxide, magnesium hydroxide, silicon flame retardant, hydrotalcite, nano montmorillonite and magnesium aluminum silicate compound.
The stabilizer is one or more of high-efficiency temperature-resistant calcium-zinc composite stabilizers.
The lubricant is one or more of stearic acid, polyethylene wax, oxidized polyethylene wax, ethylene bis stearamide, zinc stearate and calcium stearate.
The processing modifier is one or more of acrylic ester core-shell copolymer, chlorinated polyethylene, ethylene-butene copolymer and ethylene-octene copolymer.
The antioxidant is one or more of pentaerythritol tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ], 2-di (4-hydroxyphenyl) propane and N, N' -bis [ beta (3, 5-di-tert-butyl-4-hydroxyphenyl) propionyl ] hydrazine.
As shown in fig. 1, the mixing device of the special high-electrical-performance polyvinyl chloride cable material for the semi-hard ultrahigh-voltage cable comprises a cylindrical body 1.
The partition board 2 is fixedly connected in the body 1, and the partition board 2 divides the body 1 into two cavities which are adjacent up and down: the upper cavity 1a and the lower cavity 1b, still include pan feeding pipe 3, discharging pipe 4, collecting hopper 5 and whirlwind subassembly, above-mentioned pan feeding pipe 3 outer end is used for being linked together with the material storage department, pan feeding pipe 3 inner end links firmly on body 1 upper portion and pan feeding pipe 3 is linked together with upper cavity 1a, above-mentioned collecting hopper 5 is coniform and collecting hopper 5 links firmly on baffle 2, above-mentioned discharging pipe 4 upper end is connected and communicates with each other with collecting hopper 5 lower extreme, the body 1 lower part is stretched out to discharging pipe 4 lower extreme, above-mentioned whirlwind subassembly links firmly at body 1 lateral part and whirlwind subassembly can be to the air current that upper cavity 1a bottom input is the spiral direction and flows.
The cyclone component comprises a fan 6 and a spiral air pipe 7, the fan 6 is fixedly connected to the outer side of the body 1, the lower end of the air pipe 7 is communicated with an outlet of the fan 6, and the upper end of the air pipe 7 is located at the bottom of the upper cavity 1 a.
The partition board 2 is provided with a through connecting hole, and the air pipe 7 is arranged at the connecting hole in a penetrating way.
The outside of the air duct 7 abuts against the inside of the body 1.
The lower cavity 1b is internally provided with a supporting cylinder 8 and a contact cylinder 9 which are sleeved on the discharging pipe 4, the supporting cylinder 8 is made of rigid materials, the contact cylinder 9 is made of flexible materials, the lower end of the contact cylinder 9 is abutted against the upper end of the supporting cylinder 8, and the upper end of the contact cylinder 9 is in surface contact with the air pipe 7.
The contact cylinder 9 is made of rubber material.
The upper end of the supporting cylinder 8 is provided with a positioning groove 8a which is recessed in an annular shape, the lower end of the contact cylinder 9 is provided with a positioning edge 9a matched with the positioning groove 8a, and the positioning edge 9a is embedded in the positioning groove 8 a.
The material is input into the upper cavity of the body by the feeding pipe, the cyclone component inputs spiral air flow flowing at high speed to the bottom of the upper cavity, the material is fully mixed in the upper cavity under the action of the high-speed rotating air flow, and the mixed material is accumulated in the collecting hopper.
The mixed materials can smoothly enter the discharging pipe along the collecting hopper, and the fully mixed materials are conveyed to the set position through the discharging pipe.
In the operation process of the fan, the air flow entering the upper cavity body under the action of the air pipe flows at a high speed along the spiral direction.
The special high-electrical-performance polyvinyl chloride cable material for the semi-hard ultrahigh-voltage cable is environment-friendly, insulating, high in resistance, good in flame retardant property, excellent in processability, wear-resistant, not easy to crack, high in cost performance and capable of being produced in industrial quantity.
Example two
The special high-electrical-performance polyvinyl chloride cable material for the semi-hard ultrahigh-voltage cable comprises the following components:
polyvinyl chloride resin: 100 parts of the total weight of the mixture,
and (3) a plasticizer: 50 parts of a mixture of two or more components,
filler: 60 parts of a powder of a mixture of components,
flame retardant: 20 parts of a mixture of two or more components,
stabilizing agent: 12 parts of the total weight of the powder,
and (3) a lubricant: 4 parts of the total weight of the powder,
processing modifier: 20 parts of a mixture of two or more components,
an antioxidant: 1.5 parts.
The polyvinyl chloride resin is polyvinyl chloride resin with average polymerization degree of 2500.
The plasticizer is one or more of trioctyl trimellitate, dioctyl sebacate, dioctyl terephthalate and epoxidized soybean oil.
The filler is one or more of nano calcined kaolin, nano calcium carbonate, superfine heavy calcium carbonate, talcum powder, white carbon black and glass beads.
The flame retardant is one or more of antimony trioxide, zinc borate, aluminum hydroxide, magnesium hydroxide, silicon flame retardant, hydrotalcite, nano montmorillonite and magnesium aluminum silicate compound.
The stabilizer is one or more of high-efficiency temperature-resistant calcium-zinc composite stabilizers.
The lubricant is one or more of stearic acid, polyethylene wax, oxidized polyethylene wax, ethylene bis stearamide, zinc stearate and calcium stearate.
The processing modifier is one or more of acrylic ester core-shell copolymer, chlorinated polyethylene, ethylene-butene copolymer and ethylene-octene copolymer.
The antioxidant is one or more of pentaerythritol tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ], 2-di (4-hydroxyphenyl) propane and N, N' -bis [ beta (3, 5-di-tert-butyl-4-hydroxyphenyl) propionyl ] hydrazine.
As shown in fig. 1, the mixing device of the special high-electrical-performance polyvinyl chloride cable material for the semi-hard ultrahigh-voltage cable comprises a cylindrical body 1.
The partition board 2 is fixedly connected in the body 1, and the partition board 2 divides the body 1 into two cavities which are adjacent up and down: the upper cavity 1a and the lower cavity 1b, still include pan feeding pipe 3, discharging pipe 4, collecting hopper 5 and whirlwind subassembly, above-mentioned pan feeding pipe 3 outer end is used for being linked together with the material storage department, pan feeding pipe 3 inner end links firmly on body 1 upper portion and pan feeding pipe 3 is linked together with upper cavity 1a, above-mentioned collecting hopper 5 is coniform and collecting hopper 5 links firmly on baffle 2, above-mentioned discharging pipe 4 upper end is connected and communicates with each other with collecting hopper 5 lower extreme, the body 1 lower part is stretched out to discharging pipe 4 lower extreme, above-mentioned whirlwind subassembly links firmly at body 1 lateral part and whirlwind subassembly can be to the air current that upper cavity 1a bottom input is the spiral direction and flows.
The cyclone component comprises a fan 6 and a spiral air pipe 7, the fan 6 is fixedly connected to the outer side of the body 1, the lower end of the air pipe 7 is communicated with an outlet of the fan 6, and the upper end of the air pipe 7 is located at the bottom of the upper cavity 1 a.
The partition board 2 is provided with a through connecting hole, and the air pipe 7 is arranged at the connecting hole in a penetrating way.
The outside of the air duct 7 abuts against the inside of the body 1.
The lower cavity 1b is internally provided with a supporting cylinder 8 and a contact cylinder 9 which are sleeved on the discharging pipe 4, the supporting cylinder 8 is made of rigid materials, the contact cylinder 9 is made of flexible materials, the lower end of the contact cylinder 9 is abutted against the upper end of the supporting cylinder 8, and the upper end of the contact cylinder 9 is in surface contact with the air pipe 7.
The contact cylinder 9 is made of rubber material.
The upper end of the supporting cylinder 8 is provided with a positioning groove 8a which is recessed in an annular shape, the lower end of the contact cylinder 9 is provided with a positioning edge 9a matched with the positioning groove 8a, and the positioning edge 9a is embedded in the positioning groove 8 a.
The material is input into the upper cavity of the body by the feeding pipe, the cyclone component inputs spiral air flow flowing at high speed to the bottom of the upper cavity, the material is fully mixed in the upper cavity under the action of the high-speed rotating air flow, and the mixed material is accumulated in the collecting hopper.
The mixed materials can smoothly enter the discharging pipe along the collecting hopper, and the fully mixed materials are conveyed to the set position through the discharging pipe.
In the operation process of the fan, the air flow entering the upper cavity body under the action of the air pipe flows at a high speed along the spiral direction.
The special high-electrical-performance polyvinyl chloride cable material for the semi-hard ultrahigh-voltage cable is environment-friendly, insulating, high in resistance, good in flame retardant property, excellent in processability, wear-resistant, not easy to crack, high in cost performance and capable of being produced in industrial quantity.
Example III
The special high-electrical-performance polyvinyl chloride cable material for the semi-hard ultrahigh-voltage cable comprises the following components:
polyvinyl chloride resin: 100 parts of the total weight of the mixture,
and (3) a plasticizer: 41 parts of a powder of a mixture of two or more,
filler: 22 parts of a powder of a mixture of two,
flame retardant: 11 parts of the total weight of the powder,
stabilizing agent: 11 parts of the total weight of the powder,
and (3) a lubricant: 3 parts of the components in parts by weight,
processing modifier: 11 parts of the total weight of the powder,
an antioxidant: 1 part.
The polyvinyl chloride resin is polyvinyl chloride resin with average polymerization degree of 2110.
The plasticizer is one or more of trioctyl trimellitate, dioctyl sebacate, dioctyl terephthalate and epoxidized soybean oil.
The filler is one or more of nano calcined kaolin, nano calcium carbonate, superfine heavy calcium carbonate, talcum powder, white carbon black and glass beads.
The flame retardant is one or more of antimony trioxide, zinc borate, aluminum hydroxide, magnesium hydroxide, silicon flame retardant, hydrotalcite, nano montmorillonite and magnesium aluminum silicate compound.
The stabilizer is one or more of high-efficiency temperature-resistant calcium-zinc composite stabilizers.
The lubricant is one or more of stearic acid, polyethylene wax, oxidized polyethylene wax, ethylene bis stearamide, zinc stearate and calcium stearate.
The processing modifier is one or more of acrylic ester core-shell copolymer, chlorinated polyethylene, ethylene-butene copolymer and ethylene-octene copolymer.
The antioxidant is one or more of pentaerythritol tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ], 2-di (4-hydroxyphenyl) propane and N, N' -bis [ beta (3, 5-di-tert-butyl-4-hydroxyphenyl) propionyl ] hydrazine.
As shown in fig. 1, the mixing device of the special high-electrical-performance polyvinyl chloride cable material for the semi-hard ultrahigh-voltage cable comprises a cylindrical body 1.
The partition board 2 is fixedly connected in the body 1, and the partition board 2 divides the body 1 into two cavities which are adjacent up and down: the upper cavity 1a and the lower cavity 1b, still include pan feeding pipe 3, discharging pipe 4, collecting hopper 5 and whirlwind subassembly, above-mentioned pan feeding pipe 3 outer end is used for being linked together with the material storage department, pan feeding pipe 3 inner end links firmly on body 1 upper portion and pan feeding pipe 3 is linked together with upper cavity 1a, above-mentioned collecting hopper 5 is coniform and collecting hopper 5 links firmly on baffle 2, above-mentioned discharging pipe 4 upper end is connected and communicates with each other with collecting hopper 5 lower extreme, the body 1 lower part is stretched out to discharging pipe 4 lower extreme, above-mentioned whirlwind subassembly links firmly at body 1 lateral part and whirlwind subassembly can be to the air current that upper cavity 1a bottom input is the spiral direction and flows.
The cyclone component comprises a fan 6 and a spiral air pipe 7, the fan 6 is fixedly connected to the outer side of the body 1, the lower end of the air pipe 7 is communicated with an outlet of the fan 6, and the upper end of the air pipe 7 is located at the bottom of the upper cavity 1 a.
The partition board 2 is provided with a through connecting hole, and the air pipe 7 is arranged at the connecting hole in a penetrating way.
The outside of the air duct 7 abuts against the inside of the body 1.
The lower cavity 1b is internally provided with a supporting cylinder 8 and a contact cylinder 9 which are sleeved on the discharging pipe 4, the supporting cylinder 8 is made of rigid materials, the contact cylinder 9 is made of flexible materials, the lower end of the contact cylinder 9 is abutted against the upper end of the supporting cylinder 8, and the upper end of the contact cylinder 9 is in surface contact with the air pipe 7.
The contact cylinder 9 is made of rubber material.
The upper end of the supporting cylinder 8 is provided with a positioning groove 8a which is recessed in an annular shape, the lower end of the contact cylinder 9 is provided with a positioning edge 9a matched with the positioning groove 8a, and the positioning edge 9a is embedded in the positioning groove 8 a.
The material is input into the upper cavity of the body by the feeding pipe, the cyclone component inputs spiral air flow flowing at high speed to the bottom of the upper cavity, the material is fully mixed in the upper cavity under the action of the high-speed rotating air flow, and the mixed material is accumulated in the collecting hopper.
The mixed materials can smoothly enter the discharging pipe along the collecting hopper, and the fully mixed materials are conveyed to the set position through the discharging pipe.
In the operation process of the fan, the air flow entering the upper cavity body under the action of the air pipe flows at a high speed along the spiral direction.
The special high-electrical-performance polyvinyl chloride cable material for the semi-hard ultrahigh-voltage cable is environment-friendly, insulating, high in resistance, good in flame retardant property, excellent in processability, wear-resistant, not easy to crack, high in cost performance and capable of being produced in industrial quantity.
The technical features of the above-described embodiments may be combined in any manner, and for brevity, all of the possible combinations of the technical features of the above-described embodiments are not described, however, all of the combinations of the technical features should be considered as being within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.
It will be appreciated by persons skilled in the art that the above embodiments have been provided for the purpose of illustrating the invention and are not to be construed as limiting the invention, and that suitable modifications and variations of the above embodiments are within the scope of the invention as claimed.
Claims (1)
1. The utility model provides a special high electric property polyvinyl chloride cable material's of semi-hard ultra-high voltage cable compounding device, is including being the body of tube-shape, its characterized in that, this internal baffle that has linked firmly and baffle separate the body into two upper and lower adjacent cavitys: the cyclone component is fixedly connected to the side part of the body, and the cyclone component can input airflow flowing in a spiral direction to the bottom of the cavity;
the cyclone assembly comprises a fan and a spiral air pipe, the fan is fixedly connected to the outer side of the body, the lower end of the air pipe is communicated with an outlet of the fan, and the upper end of the air pipe is positioned at the bottom of the upper cavity;
the partition plate is provided with a through connecting hole, and the air pipe is arranged at the connecting hole in a penetrating way;
the outer side of the air pipe is abutted against the inner side of the body;
the lower cavity is internally provided with a supporting cylinder and a contact cylinder which are sleeved on the discharging pipe, the supporting cylinder is made of rigid materials, the contact cylinder is made of flexible materials, the lower end of the contact cylinder is abutted against the upper end of the supporting cylinder, and the upper end of the contact cylinder is in surface contact with the air pipe;
the contact cylinder is made of rubber material;
the upper end of the supporting cylinder is provided with an annular concave positioning groove, the lower end of the contact cylinder is provided with a positioning edge matched with the positioning groove, and the positioning edge is embedded in the positioning groove.
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