CN112280162A - Anti-cracking XLPO sheath material for charging cable and preparation and application thereof - Google Patents
Anti-cracking XLPO sheath material for charging cable and preparation and application thereof Download PDFInfo
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- 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
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- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
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- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
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Abstract
The invention discloses an anti-cracking XLPO sheath material for a charging cable, and a preparation method and an application thereof, wherein the anti-cracking XLPO sheath material comprises the following raw materials in parts by weight: 5-20 parts of ethylene-vinyl acetate copolymer, 10-25 parts of ethylene-acrylate copolymer, 5-20 parts of polyethylene, 2-15 parts of polyolefin block copolymer, 2-15 parts of polybutylene, 3-5 parts of auxiliary crosslinking agent, 2-10 parts of compatilizer, 0.5-3 parts of antioxidant and 0.5-2 parts of dispersing agent. According to the technical scheme, the XLPO sheath material is prepared under the action of the cross-linking agent by adopting the ethylene-vinyl acetate copolymer, the ethylene-acrylate copolymer and the polyethylene as matrixes, and the polyolefin block copolymer, the polybutene, the antioxidant, the compatilizer and the dispersant are added to be matched with one another and have a synergistic effect, so that the cable sheath material can ensure the original good processability and elasticity of the XLPO material, the anti-cracking performance of the cable sheath material is also remarkably improved, and the technical problem that the existing XLPO sheath material for the charging cable is easy to crack can be solved.
Description
Technical Field
The invention relates to the field of cables, in particular to an anti-cracking XLPO sheath material for a charging cable, and preparation and application thereof.
Background
With the low-carbon economy becoming the main melody of economic development in China, the electric automobile, as an important component of a new energy strategy and an intelligent power grid, will certainly become the key point of development of automobile industry and energy industry in China in the future, and the cable industry matched with the electric automobile will also meet good market opportunities. The charging cable has a wide future prospect from the perspective of industrial transformation or energy strategy.
The outer layer of the charging cable comprises a sheath material, the sheath material can protect the cable conductor on the innermost layer from being influenced by external factors, and the charging cable has various protective performances such as flame retardance, corrosion resistance, oxidation resistance, buffering and shock absorption, sealing and water resistance and the like. The performance of the cable sheath material determines the service life of the charging cable to a certain extent.
Crosslinked polyolefin (XLPO) materials have the characteristics of excellent electrical properties, high long-term use temperature, corrosion resistance, good pressure and heat resistance, high mechanical strength and the like, and are increasingly applied to the manufacture of cable sheath materials.
However, in the process of implementing the embodiments of the present application, the inventors of the present application found that the above-mentioned technology has at least the following technical problems: the current XLPO sheath material is at the sheath material of filling the electric pile junction port because the bending radius is smaller, and the bending stress of receiving is bigger, and often use is bent repeatedly and can lead to sheath material and fill electric pile kneck stress cracking for the barrier propterty greatly reduced of cable sheathing material.
Therefore, it has become an urgent technical problem to be solved in the art to provide an anti-cracking XLPO sheathing compound for charging cables.
Disclosure of Invention
The invention mainly aims to provide an anti-cracking XLPO sheath material for a charging cable, and preparation and application thereof, and aims to solve the technical problem that the existing XLPO sheath material for the charging cable is easy to crack.
The technical problem to be solved by the invention is realized by the following technical scheme:
the invention provides an anti-cracking XLPO sheath material for a charging cable, which comprises the following raw materials in parts by weight: 5-20 parts of ethylene-vinyl acetate copolymer, 10-25 parts of ethylene-acrylate copolymer, 5-20 parts of polyethylene, 2-15 parts of polyolefin block copolymer, 2-15 parts of polybutylene, 3-5 parts of auxiliary crosslinking agent, 2-10 parts of compatilizer, 0.5-3 parts of antioxidant and 0.5-2 parts of dispersing agent.
Further, the mass percentage of the vinyl acetate of the ethylene-vinyl acetate copolymer is 14-70%.
Further, the ethylene-acrylate copolymer is one or more of ethylene-methacrylate copolymer EMMA, ethylene-methyl acrylate copolymer EMA, ethylene-ethyl acrylate copolymer EEA and ethylene-methyl acrylate copolymer EAA.
Further, the polyethylene is a linear low density polyethylene.
Further, the auxiliary crosslinking agent is at least one of TAIC and TMPTMA.
Further, the compatilizer is one or more of ethylene-octene copolymer grafted maleic anhydride copolymer, ethylene-propylene copolymer grafted maleic anhydride copolymer and SEBS grafted maleic anhydride copolymer.
Further, the antioxidant is one or more of bis [3- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] (antioxidant 1035), tris [2, 4-di-tert-butylphenyl ] phosphite (antioxidant 168), pentaerythritol tetrakis (3-laurylthiopropionate) (antioxidant TH-412S), N' -bis- (3- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionyl) hexamethylenediamine (antioxidant 1098), and a light stabilizer 622.
Further, the feed also comprises the following raw materials in parts by weight: 5-20 parts of diethyl aluminum phosphinate, 10-40 parts of melamine urate, 10-30 parts of inorganic flame retardant and 3-10 parts of flame retardant synergist.
Further, the inorganic flame retardant is one or more of magnesium hydroxide, aluminum hydroxide, talcum powder and calcium carbonate; the flame-retardant synergist is one or more of organosilicate synergist, kaolin, nano montmorillonite, zinc borate and zinc sulfate.
Further, the feed also comprises the following raw materials in parts by weight: 0.5-5 parts of compound mildew preventive.
Further, the compound mildew preventive consists of tetramethylthiuram disulfide and inorganic aluminosilicate containing silver ions.
Further, the feed also comprises the following raw materials in parts by weight: 0.5-2 parts of a lubricant.
Further, the lubricant is one or more of stearic acid, calcium stearate, magnesium stearate, polyethylene wax, paraffin, silicone and silane coupling agent.
According to another aspect of the invention, a preparation method of the anti-cracking XLPO sheath material for the charging cable is provided, which comprises the following steps:
s1, adding all the raw materials into an internal mixer together according to a ratio for banburying to obtain a molten blend;
s2, feeding the molten blend into a single-screw extruder for granulation to obtain particles;
s3, putting the particles into a double-screw extruder to perform melt kneading extrusion to obtain an extruded material;
and S4, cooling and dicing the extruded material to obtain the anti-cracking XLPO sheath material for the charging cable.
Further, in step S2, the granulation temperature is 140-160 ℃.
Further, in step S3, the extrusion temperature of the twin-screw extruder is 140-.
According to another aspect of the invention, the anti-cracking XLPO sheath material for the charging cable is also provided for application to the charging cable of the electric automobile.
The invention has the following beneficial effects:
according to the technical scheme, the XLPO sheath material is prepared under the action of the cross-linking agent by adopting the ethylene-vinyl acetate copolymer, the ethylene-acrylate copolymer and the polyethylene as matrixes, and the polyolefin block copolymer, the polybutene, the antioxidant, the compatilizer and the dispersant are added to be matched with one another and have a synergistic effect, so that the cable sheath material can ensure the original good processability and elasticity of the XLPO material, the anti-cracking performance of the cable sheath material is also remarkably improved, and the technical problem that the existing XLPO sheath material for the charging cable is easy to crack can be solved.
The compounding of tetramethyl thiuram disulfide and inorganic aluminum silicate containing silver ions is used as the composite mildew preventive, the composite mildew preventive has good compatibility with a matrix material, the physical properties of matrix resin are not influenced, and the inventor unexpectedly discovers that the compounding of tetramethyl thiuram disulfide and inorganic aluminum silicate containing silver ions generates a synergistic effect, the mildew resistance is obviously improved, bacteria and mildew can be effectively prevented from growing on the cable, the service life of the cable can be prolonged, and an unexpected technical effect is achieved.
The preparation method has the advantages of simple steps, convenient operation and control, stable quality, high production efficiency and low production cost, and can be used for large-scale industrial production.
Detailed Description
The raw materials and equipment used in the invention are common raw materials and equipment in the field if not specified; the methods used in the present invention are conventional in the art unless otherwise specified.
Unless otherwise defined, terms used in the present specification have the same meaning as those generally understood by those skilled in the art, but in case of conflict, the definitions in the present specification shall control.
The use of "including," "comprising," "containing," "having," or other variations thereof herein, is meant to encompass the non-exclusive inclusion, as such terms are not to be construed. The term "comprising" means that other steps and ingredients can be added that do not affect the end result. The term "comprising" also includes the terms "consisting of …" and "consisting essentially of …". The compositions and methods/processes of the present invention comprise, consist of, and consist essentially of the essential elements and limitations described herein, as well as any of the additional or optional ingredients, components, steps, or limitations described herein.
All numbers or expressions referring to quantities of ingredients, process conditions, etc. used in the specification and claims are to be understood as modified in all instances by the term "about". All ranges directed to the same component or property are inclusive of the endpoints, and independently combinable. Because these ranges are continuous, they include every value between the minimum and maximum values. It should also be understood that any numerical range recited herein is intended to include all sub-ranges within that range.
As used herein, "parts by weight" or "parts by weight" are used interchangeably and can be any fixed weight expressed in milligrams, grams, or kilograms (e.g., 1mg, 1g, 2g, 5g, or 1kg, etc.). For example, a composition consisting of 1 part by weight of component a and 9 parts by weight of component b may be a composition consisting of 1g of component a +9 g of component b, or 10 g of component a +90 g of component b.
Just as the background art describes, the problem that the existing XLPO sheath material in the prior art is relatively small in bending radius of the sheath material at the port of the charging pile connection position, so that the received bending stress is relatively large, and the stress cracking of the sheath material and the charging pile interface position can be caused by frequent repeated bending in use, so that the protective performance of the cable sheath material is greatly reduced. In order to solve the technical problems, the invention provides an anti-cracking XLPO sheath material for a charging cable and a preparation method thereof.
In a first aspect, the anti-cracking XLPO sheath material for the charging cable comprises the following raw materials in parts by weight: 5-20 parts of ethylene-vinyl acetate copolymer, 10-25 parts of ethylene-acrylate copolymer, 5-20 parts of polyethylene, 2-15 parts of polyolefin block copolymer, 2-15 parts of polybutylene, 3-5 parts of auxiliary crosslinking agent, 2-10 parts of compatilizer, 0.5-3 parts of antioxidant and 0.5-2 parts of dispersing agent.
In the examples of the present invention, the ethylene-vinyl acetate copolymer (EVA) is 5 to 20 parts by weight, for example, 5 parts, 8 parts, 10 parts, 12 parts, 15 parts, 18 parts, 20 parts, and any value therebetween.
The selected ethylene-vinyl acetate copolymer (EVA) requires: the mass percentage of Vinyl Acetate (VA) is as follows: 14 to 70 percent.
In the examples of the present invention, the weight part of the ethylene-acrylic acid ester copolymer is 10 to 25 parts, for example, 10 parts, 12 parts, 15 parts, 18 parts, 20 parts, 25 parts and any value therebetween.
In the embodiment of the present invention, the ethylene-acrylate copolymer is one or more of an ethylene-methacrylate copolymer EMMA, an ethylene-methyl acrylate copolymer EMA, an ethylene-ethyl acrylate copolymer EEA, and an ethylene-methyl acrylate copolymer EAA, but is not limited thereto, and other materials not listed in this embodiment but known to those skilled in the art may also be used.
In the examples of the present invention, the polyethylene is 5 to 20 parts by weight, for example, 5 parts, 8 parts, 10 parts, 12 parts, 15 parts, 18 parts, 20 parts, and any value therebetween.
In the present embodiment, the polyethylene is preferably a linear low density polyethylene. The linear low-density polyethylene has higher softening temperature and melting temperature, and has the performances of common polyolefin resin, and particularly excellent tensile strength, tear strength, environmental stress cracking resistance, low temperature resistance, heat resistance and puncture resistance.
The invention adopts ethylene-vinyl acetate copolymer, ethylene-acrylate copolymer and polyethylene as matrixes which are mutually matched and make up for each other, so that the product has excellent mechanical property and good processing property.
In the examples of the present invention, the polyolefin block copolymer is used in an amount of 2 to 15 parts by weight, for example, 2 parts, 4 parts, 5 parts, 8 parts, 10 parts, 12 parts, 15 parts and any value therebetween.
The polyolefin block copolymer is added, is formed by regularly and alternately arranging hard chain segments and soft chain segments, has outstanding toughness, and has excellent low-temperature performance, heat resistance and wear resistance; the polyolefin block copolymer is added into an XLPO system, so that the whole system has higher cracking resistance, the whole system still has good toughness at low temperature, and the cable can still bend and move without cracking when used at low temperature. The bending strength of the polyolefin block copolymer is very low, and the polyolefin block copolymer is added into an XLPO system, so that the bending strength of the whole system can be reduced, the bending stress of materials is smaller under the condition of the same hardness, and after the charging cable is prepared, the charging pile large cable is softer, the bending radius of the charging pile large cable is reduced, and the requirement that the cable at the port of the charging pile does not crack when the charging pile is used is met.
The polyolefin block copolymers of the present invention are not particularly limited, and may be those known to those skilled in the art, and may be prepared by a known method or commercially available.
In the examples of the present invention, the polybutene is present in an amount of 2 to 15 parts by weight, for example, 2 parts, 4 parts, 5 parts, 8 parts, 10 parts, 12 parts, 15 parts and any value therebetween.
The polybutylene is added in the invention, because the polybutylene has outstanding wear resistance, not only has the impact toughness of polyethylene, but also has the stress cracking resistance and excellent creep resistance which are higher than those of polypropylene, and has the characteristics of rubber, and the polybutylene can bear the stress with the yield strength of 90 percent for a long time. Meanwhile, the thermal deformation temperature is higher, the heat resistance is good, the embrittlement temperature is low (minus 30 ℃), the thermal deformation temperature can be used for a long time at minus 30-100 ℃, and the thermal deformation temperature has flexibility; polybutene is acid, alkali, solvent, various chemicals and the like resistant at normal temperature, and most inorganic chemical reagents resistant at a temperature lower than 93 ℃. In addition, polybutene has excellent moisture barrier properties and also has excellent electrical insulating properties. Due to the addition of the polybutene, the wear-resistant, oil-resistant and cracking-resistant performances of the polybutene can be brought into the whole system, so that the XLPO sheath material disclosed by the invention has good wear-resistant, oil-resistant and cracking-resistant performances.
In the embodiment of the invention, the auxiliary crosslinking agent is at least one of triallyl isocyanurate (TAIC) and trimethylolpropane trimethacrylate (TMPTMA).
In the examples of the present invention, the weight part of the compatibilizer is 2 to 10 parts, for example, 2 parts, 4 parts, 6 parts, 8 parts, 10 parts, and any value therebetween.
The compatibilizing agent of the present invention is not particularly limited, and may be one known to those skilled in the art, prepared by a known method or commercially available. Preferably, the compatilizer is one or more of ethylene-octene copolymer grafted maleic anhydride copolymer, ethylene-propylene copolymer grafted maleic anhydride copolymer and SEBS grafted maleic anhydride copolymer. According to the invention, by adding the compatilizer, raw materials can be better compatible, higher mechanical properties can be shown, and cracking caused by poor compatibility of the raw materials can be prevented.
In the examples of the present invention, the antioxidant is 0.5 to 3 parts by weight, for example, 0.5 part, 1 part, 1.5 parts, 2 parts, 2.5 parts, 3 parts and any value therebetween.
The antioxidant of the present invention is not particularly limited, and may be one known to those skilled in the art, prepared by a known method or commercially available. Preferably, the antioxidant is one or more of bis [3- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] (antioxidant 1035), tris [2, 4-di-tert-butylphenyl ] phosphite (antioxidant 168), pentaerythritol tetrakis (3-laurylthiopropionate) (antioxidant TH-412S), N' -bis- (3- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionyl) hexamethylenediamine (antioxidant 1098), and a light stabilizer 622. The antioxidant is added, so that the oxidation process of the raw materials can be delayed or inhibited, and the XLPO sheath material is prevented from being embrittled and cracked due to external high-temperature and illumination aging.
In the examples of the present invention, the dispersant is present in an amount of 0.5 to 2 parts by weight, for example, 0.5 parts, 0.8 parts, 1 part, 1.5 parts, 2 parts, and any value therebetween.
According to the invention, the flame retardant can be better dispersed in the matrix material by adding the dispersing agent, and stress failure points are not generated to cause cracking. The dispersant of the present invention is not particularly limited, and may be one known to those skilled in the art, prepared by a known method or commercially available. By way of example, the dispersant is one or more of polyacrylamide, ethylene bis fatty acid amide, triethylhexyl phosphoric acid and sodium octyl sulfonate.
The inventor of the invention tries and discovers in various aspects that the polyolefin block copolymer and the polybutylene are simultaneously added into the matrix materials of the ethylene-vinyl acetate copolymer, the ethylene-acrylate copolymer and the polyethylene to generate good synergistic effect, the combination obtains unexpected technical effect, the anti-cracking performance of the XLPO sheath material is remarkably improved, and the service life of the whole cable is prolonged.
As a further improvement, the feed also comprises the following raw materials in parts by weight: 5-20 parts of diethyl aluminum phosphinate, 10-40 parts of melamine urate, 10-30 parts of an inorganic flame retardant and 3-10 parts of a flame retardant synergist; more preferably, the feed also comprises the following raw materials in parts by weight: 10-15 parts of diethyl aluminum phosphinate, 20-30 parts of melamine urate, 15-25 parts of inorganic flame retardant and 5-8 parts of flame retardant synergist.
In the embodiment of the invention, the inorganic flame retardant is one or more of magnesium hydroxide, aluminum hydroxide, talcum powder or calcium carbonate; the flame-retardant synergist is one or more of organosilicate synergist, kaolin, nano montmorillonite, zinc borate and zinc sulfate.
The main disadvantage of cross-linked polyolefin (XLPO) materials is the tendency to catch fire causing fire. In order to improve the flame retardancy of the cable sheath material, a large amount of flame retardant is often added, but the mechanical properties of the cable sheath material, especially the cracking resistance, are easily reduced.
In consideration of comprehensive performance of the whole technical scheme, based on mutual influence and matching with other materials, aluminum diethylphosphinate, melamine urate, an inorganic flame retardant and a flame retardant synergist are selected to be compounded as a flame retardant, and the flame retardant synergist has a strong char-forming self-extinguishing effect; aluminum diethylphosphinate belongs to a phosphorus flame retardant and provides a phosphorus source; the melamine urate belongs to a nitrogen flame retardant and provides a nitrogen source; the inorganic flame retardant may provide water; the components are matched with each other and have synergistic effect, so that the cable sheath material has a remarkable flame retardant effect, and meanwhile, the flame retardant has good compatibility with ethylene-vinyl acetate copolymer, ethylene-acrylate copolymer and polyethylene, the use amount of inorganic flame retardant is greatly reduced, the mechanical property is slightly influenced, and the XLPO sheath material has excellent performances such as cracking resistance and the like. In addition, the flame retardant is free of halogen, so that the flame retardant has the characteristics of environmental protection and no toxicity.
As a further improvement, the feed also comprises the following raw materials in parts by weight: 0.5-5 parts of compound mildew preventive.
In the embodiment of the invention, the composite mildew preventive consists of tetramethylthiuram disulfide and inorganic aluminum silicate containing silver ions. More preferably, the mass ratio of the tetramethylthiuram disulfide to the inorganic silver-ion containing aluminosilicate is 1: 1.
At present, most outdoor charging cables do not have the mould-proof function or the mould-proof function is not obvious, so that the charging cables go mouldy for a period of time, and the service life of the cables is shortened. Furthermore, the inventors have found in practice that the resistance of the cable sheathing material to mold is low after the use of the above flame retardant, which is a technical problem that has never been recognized before by those skilled in the art.
The present inventors have made further studies to solve the technical problem, and as a result, found that: the compounding of tetramethyl thiuram disulfide and inorganic aluminum silicate containing silver ions is used as the composite mildew preventive, the composite mildew preventive has good compatibility with a matrix material, the physical properties of matrix resin are not influenced, and the inventor unexpectedly discovers that the compounding of tetramethyl thiuram disulfide and inorganic aluminum silicate containing silver ions generates a synergistic effect, the mildew resistance is obviously improved, bacteria and mildew can be effectively prevented from growing on a cable, the service life of the cable can be prolonged, an unexpected technical effect is obtained, and the problem that the charging cable is easy to mildew due to the addition of the specific flame retardant is effectively solved.
In the invention, the tetramethyl thiuram disulfide and the inorganic aluminum silicate containing silver ions are nontoxic, long-acting and tasteless mildewproof agents. The tetramethylthiuram disulfide can react with-NH 2 and-SH of the enzyme to inhibit the function of the enzyme, and can inhibit ribonucleic acid (RNA) synthesis during cell germination to prevent spore germination. The inorganic aluminosilicate containing silver ions is adopted, is a completely crosslinked and open network structure, can effectively control the release of antibacterial silver ions, has an interference effect on cell walls, mainly inhibits the connection of polysaccharide chains and tetrapeptide crosslinking, so that the integrity of the cell walls is lost, the protection effect on osmotic pressure is lost, thalli and mould are damaged, and the most preferable is IRGAGUARD B5000 produced by Ciba of Switzerland.
In the embodiment of the invention, the paint also comprises the following raw materials in parts by weight: 0.5-2 parts of a lubricant.
According to the invention, by adding the lubricant, the mixed feeding material in a plasticizing state in an internal mixing process has better compatibility and leveling property, and the uniform overall appearance and smooth surface of the sheath material are ensured. The lubricant is not particularly limited in the invention, and may be one known to those skilled in the art, prepared by a known method or commercially available. Preferably, the lubricant is one or more of stearic acid, calcium stearate, magnesium stearate, polyethylene wax, paraffin, silicone, and silane coupling agent.
In a second aspect, there is provided a method for preparing the anti-cracking XLPO sheath material for charging cable in the first aspect, comprising the following steps:
s1, adding all the raw materials into an internal mixer together according to a ratio for banburying to obtain a molten blend;
s2, feeding the molten blend into a single-screw extruder for granulation to obtain particles;
s3, putting the particles into a double-screw extruder to perform melt kneading extrusion to obtain an extruded material;
and S4, cooling and dicing the extruded material to obtain the anti-cracking XLPO sheath material for the charging cable.
In step S2, the granulation temperature is 140-160 ℃, such as 140 ℃, 145 ℃, 150 ℃, 155 ℃, 160 ℃ and any value therebetween.
In step S3, the extrusion temperature of the twin-screw extruder is 140-160 ℃, such as 140 ℃, 145 ℃, 150 ℃, 155 ℃, 160 ℃ and any value therebetween; the screw rotation speed is 100-500r/min, such as 100r/min, 200r/min, 300r/min, 400r/min, 500r/min and any value therebetween.
In the examples of the present invention, the specific processes and conditions for banburying are not particularly limited, and the conventional processes for banburying known to those skilled in the art may be used.
In a third aspect, the application of the anti-cracking XLPO sheathing compound for the charging cable in the first aspect to the charging cable of the electric vehicle is also provided.
In order to better understand the technical solutions, the technical solutions will be described in detail with reference to specific examples, which are only preferred embodiments of the present invention and are not intended to limit the present invention.
Example 1
An anti-cracking XLPO sheath material for a charging cable comprises the following raw materials in parts by weight: 10 parts of ethylene-vinyl acetate copolymer, 10 parts of ethylene-acrylate copolymer, 10 parts of polyethylene, 5 parts of polyolefin block copolymer, 5 parts of polybutene, 3 parts of auxiliary crosslinking agent, 5 parts of compatilizer, 1 part of antioxidant and 1 part of dispersant.
The mass percentage of the vinyl acetate of the ethylene-vinyl acetate copolymer is 14-70%; the ethylene-acrylate copolymer is an ethylene-methacrylate copolymer EMMA; the polyethylene is linear low density polyethylene; the auxiliary crosslinking agent is TAIC; the compatilizer is an ethylene-octene copolymer grafted maleic anhydride copolymer; the antioxidant is an antioxidant 1035; the dispersant is polyacrylamide.
The preparation method of the anti-cracking XLPO sheath material for the charging cable comprises the following steps:
s1, adding all the raw materials into an internal mixer together according to a ratio for banburying to obtain a molten blend;
s2, feeding the molten blend into a single-screw extruder for granulation to obtain particles; the granulation temperature is 150 ℃;
s3, putting the particles into a double-screw extruder to perform melt kneading extrusion to obtain an extruded material; the extrusion temperature of the double-screw extruder is 150 ℃, and the screw rotating speed is 200 r/min.
And S4, cooling and dicing the extruded material to obtain the anti-cracking XLPO sheath material for the charging cable.
Example 2
An anti-cracking XLPO sheath material for a charging cable comprises the following raw materials in parts by weight: 15 parts of ethylene-vinyl acetate copolymer, 20 parts of ethylene-acrylate copolymer, 15 parts of polyethylene, 2 parts of polyolefin block copolymer, 15 parts of polybutene, 4 parts of auxiliary crosslinking agent, 8 parts of compatilizer, 3 parts of antioxidant, 2 parts of dispersing agent, 10 parts of diethyl aluminum phosphinate, 15 parts of melamine urate, 17 parts of inorganic flame retardant and 3 parts of flame retardant synergist.
The mass percentage of the vinyl acetate of the ethylene-vinyl acetate copolymer is 14-70%; the ethylene-acrylate copolymer is an ethylene-methyl acrylate copolymer EMA; the polyethylene is linear low density polyethylene; the auxiliary crosslinking agent is TMPTMA; the compatilizer is an ethylene-propylene copolymer grafted maleic anhydride copolymer; the antioxidant is antioxidant 168; the dispersant is ethylene bis fatty acid amide.
The inorganic flame retardant is magnesium hydroxide; the flame-retardant synergist is nano montmorillonite.
The preparation method of the anti-cracking XLPO sheath material for the charging cable comprises the following steps:
s1, adding all the raw materials into an internal mixer together according to a ratio for banburying to obtain a molten blend;
s2, feeding the molten blend into a single-screw extruder for granulation to obtain particles; the granulation temperature is 145 ℃;
s3, putting the particles into a double-screw extruder to perform melt kneading extrusion to obtain an extruded material; the extrusion temperature of the double-screw extruder is 145 ℃, and the screw rotating speed is 300 r/min.
And S4, cooling and dicing the extruded material to obtain the anti-cracking XLPO sheath material for the charging cable.
Example 3
An anti-cracking XLPO sheath material for a charging cable comprises the following raw materials in parts by weight: 5 parts of ethylene-vinyl acetate copolymer, 15 parts of ethylene-acrylate copolymer, 5 parts of polyethylene, 15 parts of polyolefin block copolymer, 2 parts of polybutene, 5 parts of auxiliary crosslinking agent, 2 parts of compatilizer, 0.5 part of antioxidant, 0.5 part of dispersing agent, 5 parts of diethyl aluminum phosphinate, 20 parts of melamine urate, 10 parts of inorganic flame retardant and 10 parts of flame retardant synergist.
The mass percentage of the vinyl acetate of the ethylene-vinyl acetate copolymer is 14-70%; the ethylene-acrylic ester copolymer is ethylene-ethyl acrylate copolymer EEA; the polyethylene is linear low density polyethylene; the auxiliary crosslinking agent is TAIC; the compatilizer is SEBS grafted maleic anhydride copolymer; the antioxidant is an antioxidant TH-412S; the dispersant is triethyl hexyl phosphoric acid.
The inorganic flame retardant is aluminum hydroxide; the flame-retardant synergist is kaolin.
The preparation method of the anti-cracking XLPO sheath material for the charging cable comprises the following steps:
s1, adding all the raw materials into an internal mixer together according to a ratio for banburying to obtain a molten blend;
s2, feeding the molten blend into a single-screw extruder for granulation to obtain particles; the granulation temperature is 155 ℃;
s3, putting the particles into a double-screw extruder to perform melt kneading extrusion to obtain an extruded material; the extrusion temperature of the double-screw extruder is 155 ℃, and the screw rotating speed is 200 r/min.
And S4, cooling and dicing the extruded material to obtain the anti-cracking XLPO sheath material for the charging cable.
Example 4
An anti-cracking XLPO sheath material for a charging cable comprises the following raw materials in parts by weight: 12 parts of ethylene-vinyl acetate copolymer, 10 parts of ethylene-acrylate copolymer, 8 parts of polyethylene, 7 parts of polyolefin block copolymer, 3 parts of polybutene, 4 parts of auxiliary crosslinking agent, 6 parts of compatilizer, 2 parts of antioxidant, 1 part of dispersing agent, 10 parts of diethyl aluminum phosphinate, 15 parts of melamine urate, 20 parts of inorganic flame retardant, 5 parts of flame retardant synergist, 1 part of composite mildew preventive and 1 part of lubricating agent.
The mass percentage of the vinyl acetate of the ethylene-vinyl acetate copolymer is 14-70%; the ethylene-acrylate copolymer is an ethylene-methacrylate copolymer EMMA; the polyethylene is linear low density polyethylene; the auxiliary crosslinking agent is TAIC; the compatilizer is an ethylene-octene copolymer grafted maleic anhydride copolymer; the antioxidant is an antioxidant 1098; the dispersing agent is sodium octyl sulfonate; the lubricant is silicone.
The inorganic flame retardant is talcum powder; the flame-retardant synergist is zinc borate.
The composite mildew inhibitor is prepared from tetramethylthiuram disulfide and inorganic aluminum silicate containing silver ions in a mass ratio of 1: 1.
The preparation method of the anti-cracking XLPO sheath material for the charging cable comprises the following steps:
s1, adding all the raw materials into an internal mixer together according to a ratio for banburying to obtain a molten blend;
s2, feeding the molten blend into a single-screw extruder for granulation to obtain particles; the granulation temperature is 140 ℃;
s3, putting the particles into a double-screw extruder to perform melt kneading extrusion to obtain an extruded material; the extrusion temperature of the double-screw extruder is 140 ℃, and the screw rotating speed is 500 r/min.
And S4, cooling and dicing the extruded material to obtain the anti-cracking XLPO sheath material for the charging cable.
Example 5
An anti-cracking XLPO sheath material for a charging cable comprises the following raw materials in parts by weight: 20 parts of ethylene-vinyl acetate copolymer, 25 parts of ethylene-acrylate copolymer, 20 parts of polyethylene, 10 parts of polyolefin block copolymer, 10 parts of polybutene, 3 parts of auxiliary crosslinking agent, 10 parts of compatilizer, 3 parts of antioxidant, 2 parts of dispersing agent, 20 parts of diethyl aluminum phosphinate, 10 parts of melamine urate, 30 parts of inorganic flame retardant, 6 parts of flame retardant synergist, 0.5 part of composite mildew preventive and 0.5 part of lubricating agent.
The mass percentage of the vinyl acetate of the ethylene-vinyl acetate copolymer is 14-70%; the ethylene-acrylic ester copolymer is an ethylene-methyl acrylate copolymer EMA and an ethylene-methyl acrylate copolymer EAA; the polyethylene is linear low density polyethylene; the auxiliary crosslinking agent is TAIC and TMPTMA; the compatilizer is an ethylene-octene copolymer grafted maleic anhydride copolymer and an ethylene-propylene copolymer grafted maleic anhydride copolymer; the antioxidant is an antioxidant 1035 and an antioxidant 168; the dispersing agent is polyacrylamide and sodium octyl sulfonate; the lubricant is calcium stearate and paraffin.
The inorganic flame retardant is calcium carbonate; the flame-retardant synergist is zinc sulfate.
The composite mildew inhibitor is prepared from tetramethylthiuram disulfide and inorganic aluminum silicate containing silver ions in a mass ratio of 1: 1.
The preparation method of the anti-cracking XLPO sheath material for the charging cable comprises the following steps:
s1, adding all the raw materials into an internal mixer together according to a ratio for banburying to obtain a molten blend;
s2, feeding the molten blend into a single-screw extruder for granulation to obtain particles; the granulation temperature is 160 ℃;
s3, putting the particles into a double-screw extruder to perform melt kneading extrusion to obtain an extruded material; the extrusion temperature of the double-screw extruder is 160 ℃, and the screw rotating speed is 100 r/min.
And S4, cooling and dicing the extruded material to obtain the anti-cracking XLPO sheath material for the charging cable.
Example 6
An anti-cracking XLPO sheath material for a charging cable comprises the following raw materials in parts by weight: the flame-retardant coating comprises, by weight, 18 parts of an ethylene-vinyl acetate copolymer, 10 parts of an ethylene-acrylate copolymer, 18 parts of polyethylene, 12 parts of a polyolefin block copolymer, 12 parts of polybutene, 5 parts of an auxiliary crosslinking agent, 3 parts of a compatilizer, 2 parts of an antioxidant, 1 part of a dispersing agent, 15 parts of diethyl aluminum phosphinate, 40 parts of melamine urate, 18 parts of an inorganic flame retardant, 8 parts of a flame-retardant synergist, 5 parts of a composite mildew inhibitor and 2 parts of a lubricant.
The mass percentage of the vinyl acetate of the ethylene-vinyl acetate copolymer is 14-70%; the ethylene-acrylate copolymer is an ethylene-methyl acrylate copolymer EAA; the polyethylene is linear low density polyethylene; the auxiliary crosslinking agent is TAIC; the compatilizer is an ethylene-propylene copolymer grafted maleic anhydride copolymer and an SEBS grafted maleic anhydride copolymer; the antioxidant is antioxidant 168 and antioxidant 1098; the dispersant is polyacrylamide; the lubricant is silicone and a silane coupling agent.
The inorganic flame retardant is magnesium hydroxide and talcum powder; the flame-retardant synergist is organic silicate synergist and nano montmorillonite.
The composite mildew inhibitor is prepared from tetramethylthiuram disulfide and inorganic aluminum silicate containing silver ions in a mass ratio of 1: 1.
The preparation method of the anti-cracking XLPO sheath material for the charging cable comprises the following steps:
s1, adding all the raw materials into an internal mixer together according to a ratio for banburying to obtain a molten blend;
s2, feeding the molten blend into a single-screw extruder for granulation to obtain particles; the granulation temperature is 150 ℃;
s3, putting the particles into a double-screw extruder to perform melt kneading extrusion to obtain an extruded material; the extrusion temperature of the double-screw extruder is 150 ℃, and the screw rotating speed is 250 r/min.
And S4, cooling and dicing the extruded material to obtain the anti-cracking XLPO sheath material for the charging cable.
Comparative example 1
Based on example 1, the difference is only that: the comparative example 1 comprises the following raw materials in parts by weight: 10 parts of ethylene-vinyl acetate copolymer, 10 parts of ethylene-acrylate copolymer, 10 parts of polyethylene, 10 parts of polybutylene, 3 parts of auxiliary crosslinking agent, 5 parts of compatilizer, 1 part of antioxidant and 1 part of dispersant.
Comparative example 2
Based on example 1, the difference is only that: the comparative example 2 comprises the following raw materials in parts by weight: 10 parts of ethylene-vinyl acetate copolymer, 10 parts of ethylene-acrylate copolymer, 10 parts of polyethylene, 10 parts of polyolefin block copolymer, 3 parts of auxiliary crosslinking agent, 5 parts of compatilizer, 1 part of antioxidant and 1 part of dispersant.
Comparative example 3
Based on example 2, the difference is only that: the comparative example 3 comprises the following raw materials in parts by weight: 15 parts of ethylene-vinyl acetate copolymer, 20 parts of ethylene-acrylate copolymer, 15 parts of polyethylene, 2 parts of polyolefin block copolymer, 15 parts of polybutene, 4 parts of auxiliary crosslinking agent, 8 parts of compatilizer, 3 parts of antioxidant, 2 parts of dispersing agent, 25 parts of melamine urate, 17 parts of inorganic flame retardant and 3 parts of flame retardant synergist.
Comparative example 4
Based on example 2, the difference is only that: the comparative example 4 comprises the following raw materials in parts by weight: 15 parts of ethylene-vinyl acetate copolymer, 20 parts of ethylene-acrylate copolymer, 15 parts of polyethylene, 2 parts of polyolefin block copolymer, 15 parts of polybutene, 4 parts of auxiliary crosslinking agent, 8 parts of compatilizer, 3 parts of antioxidant, 2 parts of dispersing agent, 10 parts of diethyl aluminum phosphinate, 32 parts of inorganic flame retardant and 3 parts of flame retardant synergist.
Comparative example 5
Based on example 2, the difference is only that: the comparative example 5 comprises the following raw materials in parts by weight: 15 parts of ethylene-vinyl acetate copolymer, 20 parts of ethylene-acrylate copolymer, 15 parts of polyethylene, 2 parts of polyolefin block copolymer, 15 parts of polybutene, 4 parts of auxiliary crosslinking agent, 8 parts of compatilizer, 3 parts of antioxidant, 2 parts of dispersing agent, 10 parts of diethyl aluminum phosphinate, 15 parts of melamine urate and 20 parts of flame retardant synergist.
Comparative example 6
Based on example 2, the difference is only that: the comparative example 6 comprises the following raw materials in parts by weight: 15 parts of ethylene-vinyl acetate copolymer, 20 parts of ethylene-acrylate copolymer, 15 parts of polyethylene, 2 parts of polyolefin block copolymer, 15 parts of polybutene, 4 parts of auxiliary crosslinking agent, 8 parts of compatilizer, 3 parts of antioxidant, 2 parts of dispersing agent, 13 parts of diethyl aluminum phosphinate, 15 parts of melamine urate and 17 parts of inorganic flame retardant.
Comparative example 7
Based on example 4, the difference is only that: the compound mildew preventive in the comparative example 7 is tetramethylthiuram disulfide.
Comparative example 8
Based on example 4, the difference is only that: the composite mildew preventive in the comparative example 8 is inorganic aluminosilicate containing silver ions.
Test example
In order to verify the performance of the product of the invention, the XLPO sheath materials prepared in the examples 1-6 and the comparative examples 1-8 are respectively subjected to related performance tests, and the specific method comprises the following steps:
testing the physical and mechanical properties according to the standard of GB/T33594-2017;
the vertical combustion performance of the test sample is tested according to GB/T2408-2008 'determination of plastic combustion performance horizontal method and vertical method', and the test sample size is as follows: the length is 125mm, the width is 13mm, and the thickness is 3 mm;
the mildew resistance test was performed according to GJB 150.10A-2009.
The test results for the XLPO jacket material of examples 1-6 are shown in Table 1.
Table 1 results of testing the properties of the cable materials prepared in examples 1 to 6
The tearing strength of the XLPO sheath material in the comparative examples 1-2 is 16N/mm and 15N/mm respectively, the swinging times are 8400 times and 8300 times respectively, and the polyolefin block copolymer and the polybutene are proved to generate good synergistic effect, the combination obtains unexpected technical effect, and the cracking resistance of the XLPO sheath material is remarkably improved.
The XLPO sheath material in the comparative examples 3-6 respectively reaches V-1 grade, V-1 grade and V-1 grade in vertical combustion tests, and the results prove that the aluminum diethylphosphinate, the melamine urate, the inorganic flame retardant and the flame retardant synergist are compounded to serve as a flame retardant synergistic effect, so that the cable sheath material has an obvious flame retardant effect.
The mildew-proof grades in the mildew-proof tests of the XLPO sheath materials in the comparative examples 7 to 8 are 2 grades and 2 grades respectively, which proves that the compounding of the tetramethyl thiuram disulfide and the inorganic aluminosilicate containing silver ions generates a synergistic effect and obviously improves the mildew-proof performance.
The above-mentioned embodiments only express the embodiments of the present invention, and the description is more specific and detailed, but not understood as the limitation of the patent scope of the present invention, but all the technical solutions obtained by using the equivalent substitution or the equivalent transformation should fall within the protection scope of the present invention.
Claims (10)
1. The anti-cracking XLPO sheath material for the charging cable is characterized by comprising the following raw materials in parts by weight: 5-20 parts of ethylene-vinyl acetate copolymer, 10-25 parts of ethylene-acrylate copolymer, 5-20 parts of polyethylene, 2-15 parts of polyolefin block copolymer, 2-15 parts of polybutylene, 3-5 parts of auxiliary crosslinking agent, 2-10 parts of compatilizer, 0.5-3 parts of antioxidant and 0.5-2 parts of dispersing agent.
2. The anti-cracking XLPO sheath material for charging cable as claimed in claim 1, wherein the ethylene-vinyl acetate copolymer has a vinyl acetate mass percentage of 14-70%; the polyethylene is linear low density polyethylene; the auxiliary crosslinking agent is at least one of TAIC and TMPTMA; the compatilizer is one or more of ethylene-octene copolymer grafted maleic anhydride copolymer, ethylene-propylene copolymer grafted maleic anhydride copolymer and SEBS grafted maleic anhydride copolymer.
3. The anti-cracking XLPO sheath material for charging cable according to claim 1, wherein the ethylene-acrylic ester copolymer is one or more of ethylene-methacrylic ester copolymer EMMA, ethylene-methyl acrylate copolymer EMA, ethylene-ethyl acrylate copolymer EEA and ethylene-methyl acrylate copolymer EAA.
4. The anti-cracking XLPO sheath material for the charging cable according to claim 1, further comprising the following raw materials in parts by weight: 5-20 parts of diethyl aluminum phosphinate, 10-40 parts of melamine urate, 10-30 parts of inorganic flame retardant and 3-10 parts of flame retardant synergist.
5. The anti-cracking XLPO sheath material for charging cable according to claim 4, wherein the inorganic flame retardant is one or more of magnesium hydroxide, aluminum hydroxide, talc and calcium carbonate; the flame-retardant synergist is one or more of organosilicate synergist, kaolin, nano montmorillonite, zinc borate and zinc sulfate.
6. The anti-cracking XLPO sheath material for the charging cable according to claim 1, further comprising the following raw materials in parts by weight: 0.5-5 parts of compound mildew preventive.
7. The split-resistant XLPO jacket composition for charging cables as claimed in claim 6, wherein said compound fungicide is composed of tetramethylthiuram disulfide and inorganic silver ion-containing aluminosilicate.
8. The process for preparing a crack-resistant XLPO sheathing compound for a charging cable as claimed in any one of claims 1 to 7, comprising the steps of:
s1, adding all the raw materials into an internal mixer together according to a ratio for banburying to obtain a molten blend;
s2, feeding the molten blend into a single-screw extruder for granulation to obtain particles;
s3, putting the particles into a double-screw extruder to perform melt kneading extrusion to obtain an extruded material;
and S4, cooling and dicing the extruded material to obtain the anti-cracking XLPO sheath material for the charging cable.
9. The method as claimed in claim 8, wherein the granulation temperature is 140 ℃ and 160 ℃ in step S2; in step S3, the extrusion temperature of the twin-screw extruder is 140-.
10. Use of a crack-resistant XLPO sheathing compound for charging cables according to any one of claims 1 to 7 in charging cables for electric vehicles.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113087992A (en) * | 2021-04-08 | 2021-07-09 | 重庆丰驰实业有限公司 | Low-smoke halogen-free flame-retardant sheath material and preparation method thereof |
| CN114437494A (en) * | 2022-03-11 | 2022-05-06 | 深圳市沃尔核材股份有限公司 | TPE sheath material for charging cable and preparation method thereof |
| CN114644788A (en) * | 2022-03-28 | 2022-06-21 | 金发科技股份有限公司 | Long-term high-temperature aging resistant polyolefin material and preparation method and application thereof |
| CN115477806A (en) * | 2022-10-12 | 2022-12-16 | 盐城市顺泽工贸有限公司 | Low-smoke halogen-free flame-retardant sheath material |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105131405A (en) * | 2015-10-16 | 2015-12-09 | 太仓市晨洲塑业有限公司 | High-strength modified polyethylene jacket |
| CN109627567A (en) * | 2018-12-29 | 2019-04-16 | 上海至正道化高分子材料股份有限公司 | A kind of B1 grades of fire-retardant irradiated crosslinking low-smoke and halogen-free insulated cable material and preparation method thereof |
-
2020
- 2020-10-16 CN CN202011112793.8A patent/CN112280162A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105131405A (en) * | 2015-10-16 | 2015-12-09 | 太仓市晨洲塑业有限公司 | High-strength modified polyethylene jacket |
| CN109627567A (en) * | 2018-12-29 | 2019-04-16 | 上海至正道化高分子材料股份有限公司 | A kind of B1 grades of fire-retardant irradiated crosslinking low-smoke and halogen-free insulated cable material and preparation method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113087992A (en) * | 2021-04-08 | 2021-07-09 | 重庆丰驰实业有限公司 | Low-smoke halogen-free flame-retardant sheath material and preparation method thereof |
| CN114437494A (en) * | 2022-03-11 | 2022-05-06 | 深圳市沃尔核材股份有限公司 | TPE sheath material for charging cable and preparation method thereof |
| CN114644788A (en) * | 2022-03-28 | 2022-06-21 | 金发科技股份有限公司 | Long-term high-temperature aging resistant polyolefin material and preparation method and application thereof |
| CN115477806A (en) * | 2022-10-12 | 2022-12-16 | 盐城市顺泽工贸有限公司 | Low-smoke halogen-free flame-retardant sheath material |
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