CN116903984A - TPE flame-retardant weather-resistant material for photovoltaic cable and preparation method thereof - Google Patents

TPE flame-retardant weather-resistant material for photovoltaic cable and preparation method thereof Download PDF

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CN116903984A
CN116903984A CN202310747112.2A CN202310747112A CN116903984A CN 116903984 A CN116903984 A CN 116903984A CN 202310747112 A CN202310747112 A CN 202310747112A CN 116903984 A CN116903984 A CN 116903984A
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flame retardant
antioxidant
parts
tpe
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岑建达
岑光
岑昶
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Daoyi High Molecular Polymer Ningbo Co ltd
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Daoyi High Molecular Polymer Ningbo Co ltd
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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
    • C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
    • C08L53/02—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes
    • C08L53/025—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes modified
    • 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
    • C08L23/10—Homopolymers or copolymers of propene
    • C08L23/12—Polypropene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L91/00—Compositions of oils, fats or waxes; Compositions of derivatives thereof
    • C08L91/06—Waxes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2227—Oxides; Hydroxides of metals of aluminium
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2296—Oxides; Hydroxides of metals of zinc
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/011—Nanostructured additives
    • 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
    • C08L2201/08—Stabilised against heat, light or radiation or oxydation
    • 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)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

The invention relates to the field of high polymer materials, in particular to C08L23/08, and more particularly relates to a TPE flame-retardant weather-resistant material for a photovoltaic cable and a preparation method thereof; the preparation raw materials comprise the following components in parts by mass: 20-40 parts of thermoplastic elastomer, 15-40 parts of host polymer, 20-40 parts of mineral oil, 10-40 parts of flame retardant, 0.01-1 part of antioxidant, 0.01-1 part of UV resistant agent, 0.01-1 part of dispersing agent and 0.01-1 part of auxiliary agent. The TPE flame-retardant weather-resistant material for the photovoltaic cable, which is prepared by the invention, has excellent flame retardance, oxidation and yellowing resistance, and excellent mechanical strength, and does not generate toxic halogen-containing gas under the condition of combustion.

Description

TPE flame-retardant weather-resistant material for photovoltaic cable and preparation method thereof
Technical Field
The invention relates to the field of high polymer materials, in particular to the field of C08L23/08, and more particularly relates to a TPE flame-retardant weather-resistant material for a photovoltaic cable and a preparation method thereof.
Background
The photovoltaic material industry is currently developing rapidly, and the demand for photovoltaic materials in the market is also yearlyThe development of the photovoltaic materials in China is gradually increased, the solar energy resources in China are rich and have a large distribution range, if the solar energy can be reasonably utilized for photovoltaic power generation, the exploitation or import dependence on nonrenewable coal mine resources can be eliminated, and the national concept of green sustainable development is met, so that the development potential of the photovoltaic industry is huge, the solar power generation is very important in China at present, and a large amount of manpower, material resources and financial resources are put into the photovoltaic material field. TPE is totally called Thermoplastic Elastomer, namely thermoplastic elastomer, has excellent properties such as good rebound resilience, high mechanical strength, strong plasticity and the like, and TPE material has low toxicity, good weather resistance, convenient coloring, no need of further vulcanization, and simultaneously has the characteristics of plastic and rubber, and can be polymerized with materials such as polyethylene, polyvinyl chloride, polycarbonate and the like, so that the application range is wide. Thermoplastic elastomer TPE, an artificial environment-friendly rubber. The high-elasticity anti-aging and oil-resistant cross-linked vulcanized rubber has the excellent performances of high elasticity, aging resistance and oil resistance of the traditional cross-linked vulcanized rubber, is convenient to process, can be processed in modes of injection molding, base and the like, and is simple in preparation method and low in cost. The SEBS (hydrogenated styrene-butadiene-styrene block copolymer) is a novel thermoplastic elastomer with wide application, and is prepared by selectively hydrogenating unsaturated double bonds of butadiene sections in thermoplastic block copolymer SBS (styrene-butadiene-styrene) molecules, and can be directly processed and molded by melt flow at high temperature, wherein a polystyrene hard section (S section) in a SEBS molecular chain contains benzene rings, and has high rigidity and poor movement capability; the ethylene-butene soft segment (EB segment) molecular chain is a carbon straight chain with a side chain, and has higher flexibility; due to the difference of flexibility, the two blocks form a physical cross-linked network in which a polystyrene hard segment disperse phase is distributed in an ethylene-butylene soft segment continuous phase, so that free movement of the soft segment is hindered, and the SEBS shows good elasticity; in addition, the unsaturated double bond of butadiene segment in the molecular structure of SEBS is hydrogenated and saturated, so that the SEBS has excellent heat resistance, oxidation resistance, ultraviolet resistance and other excellent performances, and meanwhile, the SEBS has excellent electrical insulation property, and the inherent resistance of the SEBS is 10 4 -10 6 The voltage resistance is 10-40V/mu m, and the photovoltaic cable is particularly suitable for being used as a photovoltaic cable.
The prior art discloses an anti-aging photovoltaic cable and a preparation method thereof, wherein the preparation raw materials of the photovoltaic material comprise PVC, chlorinated butadiene rubber, a cross-linking agent, a flame retardant, an anti-aging agent, a grafting material, a stabilizer, a dispersing agent and the like, the anti-aging photovoltaic cable has excellent performances of strong flame retardance, difficult aging and the like, however, the PVC is a halogen-containing high polymer material, if the use temperature is above 80 ℃, the PVC is easy to crack, the low temperature resistance is poor, the mechanical strength of the material is greatly changed when the temperature is low, in addition, toxic and harmful gas is generated when the PVC material burns, and the surrounding air environment and residents are greatly influenced.
The prior art discloses an aging-resistant photovoltaic cable for CN110534239A, wherein the preparation raw materials at least comprise PVC, serpentine, tribasic lead sulfate, antimonous oxide, ferrocene, nitrile rubber and plasticizer; the aging-resistant photovoltaic cable has the advantages of high tensile strength, high elongation at break, air aging resistance and simpler preparation process, wherein tribasic lead sulfate is used as a stabilizer of PVC, has excellent heat resistance, electrical insulation and good light resistance, but tribasic lead sulfate is easy to absorb moisture and unstable, and can deteriorate the dispersibility of a preparation system after use, so that the aging-resistant photovoltaic cable is not suitable for scale-up production.
Disclosure of Invention
In order to solve the problems, the first aspect of the invention provides a TPE flame-retardant weather-resistant material for a photovoltaic cable, which comprises the following preparation raw materials in parts by mass: 20-40 parts of thermoplastic elastomer, 15-40 parts of host polymer, 20-40 parts of mineral oil, 10-40 parts of flame retardant, 0.01-1 part of antioxidant, 0.01-1 part of UV resistant agent, 0.01-1 part of dispersing agent and 0.01-1 part of auxiliary agent.
Preferably, the thermoplastic elastomer comprises at least one of TPU, TPS, TPO, TPV, TPEE, TPA.
Further preferably, the thermoplastic elastomer comprises at least TPS.
Further preferably, the TPS comprises at least one of SEBS, SEP, SIS, SBS.
Further preferably, the TPS comprises at least SEBS.
Further preferably, the SEBS has a tensile strength of 15-18MPa and an elongation at break of 350-450%.
As a practical case, the tensile strength of the SEBS may include 16.0MPa or 18.0MPa; elongation at break may comprise 350%, 400% or 450%.
Preferably, the host polymer is a polyolefin.
Further preferably, the polyolefin comprises at least one of polyethylene, polypropylene and polypentene.
Further preferably, the polyolefin comprises at least polypropylene.
Further preferably, the polypropylene has a melt flow rate of 2.0-8g/10min.
As a practical case, the melt flow rate of the polypropylene may comprise 2.3g/10min, 5g/10min or 8g/10min
Further preferably, the mass ratio of the host polymer to the thermoplastic elastomer is 1: (1-1.8).
Further preferably, the mass ratio of the host polymer to the thermoplastic elastomer may include 1:1. 3: 4. 2:3 or 5:6.
the polypropylene (PP) has good corrosion resistance, heat resistance and insulativity, and has the defects of low impact strength and poor low-temperature impact performance. The toughening of rubber has been a good method for improving impact strength, and hydrogenated polybutadiene, styrene-butadiene rubber, ethylene-propylene rubber and other toughening agents are often used for blending with the rubber to improve toughness. The polypropylene has lower intermolecular spacing and compact structure, is a material which is easier to crystallize, the crystallization microcosmic of polypropylene is obvious bright and dark cross spherulites, when SEBS is added to a certain amount for blending, the number of the formed spherulites is obviously reduced, the interface becomes fuzzy, when the crystallinity of the material is low, the limit on molecules becomes small, the intermolecular acting force becomes weak, the molecular chain segment movement range becomes wider, so that the bending strength, the hardness, the modulus, the glass transition temperature, the melting point and the like of the material are reduced, and the impact strength and the elongation rate become high; the PP/SEBS blend has higher service temperature and weather resistance, when the melt flow rate of PP is 2.0-8g/10min, the tensile strength of SEBS is 15-18MPa, the elongation at break is 350-450%, in the PP/SEBS copolymerization system, the crystallinity of PP in the copolymerization system is reduced along with the increase of the SEBS content, the spherulitic size is increased, the corresponding tensile strength, the elastic modulus and the yield stress are also reduced along with the increase of the elongation at break and the yield strain are increased; if the PP content is increased, PP molecules gradually form large spherulites, molecular chains are distributed in a compact and orderly manner, intermolecular acting force is increased, and a molecular chain segment movement range is narrowed, so that the bending strength, hardness, modulus, glass transition temperature, melting point and the like of the PP molecular chain are increased, the impact strength and elongation of the PP molecular chain are reduced, when the PP content in a system is more, the PP is added, the physical crosslinking structure of an SEBS melt can be obviously changed, the material flow is mainly PP material fluidity, the SEBS is a disperse phase, and the SEBS plays a toughening effect in the system. When the mass ratio of the host polymer to the thermoplastic elastomer is 1: (1-1.8), the system has more excellent mechanical properties.
Preferably, the flame retardant master batch at least comprises one of zinc oxide, aluminum oxide and polyphosphate.
Further preferably, the auxiliary agent at least comprises zinc oxide.
Further preferably, the zinc oxide is nano zinc oxide.
Further preferably, the specification of the nano zinc oxide can be 15nm,30nm,50nm and 90nm.
The peroxide and free radical generated by the photocatalytic reaction of the nano zinc oxide have strong oxidizing capability, can decompose odor bodies, have antibacterial and deodorizing properties, and can decompose oxygen at high temperature to isolate air in the cable coating, so that the polymer is not burnt or slowly burnt, the nano zinc oxide reacts with hydroxyl in the resin to generate hydroxyl groups, and the generation of the free radicals and the thermal degradation process of the polymer are stabilized; besides flame retardant effect, the coating can also increase the resistance of the coating to ultraviolet radiation, weaken the sensitivity of the coating to humid environment conditions, improve ageing resistance and weather resistance, and further the nano zinc oxide can also improve the defect of the reduction of the breaking elongation of the photovoltaic cable caused by PP/SEBS blending. After the nano zinc oxide is used, the wear resistance, the service life and other performances of the PP/SEBS blend can be further improved.
Preferably, the dispersant is stearate.
Further preferably, the dispersant comprises at least zinc stearate.
In order to improve the problem of poor system dispersibility caused by the introduction of nano zinc oxide, the inventor uses zinc stearate, especially zinc stearate with the particle size of 500-600 meshes, as a dispersing agent to improve the problem of poor system dispersibility. Because zinc stearate has the dual characteristics of metal salt and fatty acid, the zinc stearate can be used as a heat stabilizer to increase the transparency or translucency of resin and can also play the roles of softener, lubricant and film forming agent.
Preferably, the particle size of the zinc stearate is 500-600 meshes.
Further preferably, the particle size of the zinc stearate is 600 mesh.
In order to improve the dispersibility of the system and further improve the strength of the material, the inventor finds that when 500-600 mesh zinc stearate, especially 600 mesh zinc stearate, is used, and the tensile strength of the SEBS is 15-18MPa and the elongation at break is 350-450%, the PP/SEBS and the zinc stearate are matched with a certain adsorption effect in the mixing processing process to promote the PP/SEBS to wrap the particle surface of the PP/SEBS, and the compression mixing effect of a screw in a screw extruder in the heating process is adopted, so that the PP/SEBS and the zinc stearate in a molten flow state can have more contact sites, the dispersibility of the zinc stearate in the PP/SEBS is further promoted, and the mechanical strength of the material is further improved; in the heating process, a crossed network structure can be formed between PP/SEBS structures, zinc stearate can be dispersed into the crossed network structure, so that the mixing and dispersing uniformity of the zinc stearate in the material is improved, and the strength of the material is improved.
Preferably, the mineral oil comprises at least white oil.
Further preferably, the kinematic viscosity of the white oil is 10-22mm 2 /s。
As a practical case, the kinematic viscosity of the white oil may comprise 10, 20 or 22mm 2 /s。
Further preferably, the kinematic viscosity of the white oil is 20mm 2 /s。
In order to improve the extrusion stability of TPE flame-retardant weather-resistant materials for photovoltaic cables, the inventor finds that the viscosity is 10-36mm in experiments 2 The compatibility of PP/SEBS is improved by the white oil of/s, and the white oil has a viscosity of 20mm for the hard segment and soft segment of the butadiene-containing copolymer 2 The white oil of/S can permeate into S section and EB section in SEBS molecule in the heating and melting process, further permeate into between the polymer molecule chains, promote dispersing agent zinc stearate to disperse in the preparation system, improve extrusion stability of TPE flame-retardant weather-resistant material for photovoltaic cable after melting and granulating, avoid surface layer crack or damage in heating and extrusion, and further improve mechanical strength of the product obtained by the invention.
Preferably, the antioxidant comprises hindered phenol antioxidants and phosphite antioxidants.
Preferably, the hindered phenol antioxidant at least comprises one or more of antioxidant 1010, antioxidant 2246, antioxidant 1076 and antioxidant 1098.
Preferably, the phosphite antioxidant at least comprises one of an antioxidant 168, an antioxidant 705 and an antioxidant 317.
Further preferably, the hindered phenol antioxidant comprises at least antioxidant 1010.
Further preferably, the phosphite antioxidant comprises at least antioxidant 168.
Further preferably, the mass ratio of the antioxidant 1010 to the antioxidant 168 is 1: (1-2.5).
Further preferably, the mass ratio of the antioxidant 1010 to the antioxidant 168 may include 1:1.4,1:1.5,1:1.8,1:2.
preferably, the flame retardant is an inorganic component.
Further preferably, the inorganic component at least comprises one of alumina, aluminum hydroxide, magnesium hydroxide, and antimony trioxide.
Further preferably, the inorganic component at least comprises antimony trioxide and aluminum hydroxide.
Further preferably, the mass ratio of the antimonous oxide to the aluminum hydroxide is (5-8): (3-5).
Further preferably, the mass ratio of the antimony trioxide to the aluminum hydroxide may include 5:3,3:2,8:5,2:1.
compared with single inorganic component antimonous oxide, the inventor finds that better flame retardant effect can be achieved when antimonous oxide and aluminum hydroxide are compounded, and when the inorganic component at least comprises antimonous oxide, compared with other inorganic flame retardants, the antimonous oxide has better weather resistance, and the ageing resistance of the material can be obviously improved. In addition, the antimony trioxide can further increase the dispersibility of the system, can improve the mechanical property of the material, so that the thermal stability of the product is high, the performance is not affected by repeated processing, aluminum hydroxide is also a substance with excellent flame retardant property, and can generate water and aluminum oxide with strong stability under the condition of burning so as to prevent burning, but the aluminum hydroxide has poor compatibility in a PP/SEBS system, the dispersing agent zinc stearate contained in the preparation raw material can also compensate the problem of poor dispersibility of the aluminum hydroxide, meanwhile, the flame retardant avoids the common use of compounding antimony trioxide and halogen-containing organic matters in the market, and can reduce the generation of toxic and harmful halogen-containing gases during burning, and when the antimony trioxide, the mass ratio of the aluminum hydroxide is (5-8): (3-5) the product prepared by the invention has more excellent flame retardant property, weather resistance and stability.
Preferably, the anti-UV agent comprises at least one or more of carbon black, iron oxide red, zinc oxide, UV326, UV328, UV360, UV 531.
The invention provides a preparation method of TPE flame-retardant weather-resistant material for photovoltaic cables, which at least comprises the following steps:
mixing the raw materials according to the parts by weight, and adding the mixture into a double-screw extruder for granulating.
Preferably, the temperatures of each section of the double-screw extruder are as follows: 200-220 ℃ in zone 1, 210-230 ℃ in zone 2, 210-230 ℃ in zone 3, 210-230 ℃ in zone 4, 210-230 ℃ in zone 5, 220-235 ℃ in zone 6, 220-235 ℃ in zone 7, 220-235 ℃ in zone 8, 220-235 ℃ in zone 9, 225-240 ℃,10, 225-245 ℃,11, 225-245 ℃ in zone 225-245 ℃ and 12, 225-245 ℃.
Preferably, the temperature of the head of the double-screw extruder is 220-250 ℃.
Advantageous effects
The TPE flame-retardant weather-resistant material for the photovoltaic cable, which is produced by compounding specific preparation raw materials, has excellent flame retardance, oxidation and yellowing resistance, excellent mechanical strength and no toxic halogen-containing gas under the condition of combustion.
In the PP/SEBS copolymerization system, as the content of SEBS is increased, the crystallinity of PP in the copolymerization system is reduced, the spherulitic size is increased, and the corresponding tensile strength, elastic modulus and yield stress are reduced and the tensile at break and the yield strain are increased; the PP content is increased, PP molecules gradually form large spherulites, molecular chains are closely and orderly distributed, intermolecular acting force is increased, and a molecular chain segment movement range is narrowed, so that the bending strength, hardness, modulus, glass transition temperature, melting point and the like of the PP are increased, the impact strength and the elongation are reduced, and the mass ratio of the PP to the SEBS is 1: (1-1.8) the system has more excellent mechanical property and stability.
(III) dispersing agent nano zinc oxide used in the invention; not only has the flame-retardant effect, but also can increase the resistance of the coating to ultraviolet radiation, weaken the sensitivity of the coating to humid environment conditions, and improve the ageing resistance and weather resistance.
(IV) the kinematic viscosity of the white oil in the invention is 10-36mm 2 S, in particular viscosity of 20mm 2 White oil/S, which can penetrate into S section of SEBS molecule during heating and meltingAnd the EB section is further permeated between PP/SEBS polymeric molecular chains, so that the dispersing agent zinc stearate is promoted to be dispersed in the preparation system, and the mechanical strength of the product can be improved.
(V) when the flame retardant is antimonous oxide, the mass ratio of aluminum hydroxide is (5-8): (3-5) the product prepared by the invention has more excellent flame retardant property, weather resistance and stability, avoids the use of halogen-containing organic components, and does not release toxic halogen-containing gas under the combustion condition.
Detailed Description
Example 1
The first aspect of the embodiment provides a TPE flame-retardant weather-resistant material for a photovoltaic cable, which is prepared from the following raw materials in parts by mass: 30 parts of thermoplastic elastomer, 20 parts of host polymer, 30 parts of mineral oil, 18 parts of flame retardant, 0.2 part of antioxidant, 0.5 part of UV resistant agent, 0.5 part of dispersing agent and 0.5 part of auxiliary agent.
The thermoplastic elastomer is SEBS, the breaking elongation of the SEBS is 400%, the tensile strength is 16.0MPa, and the model is mesopetrochemical 503.
The main polymer is polypropylene, the melt index is 2.3g/10min, and the model is medium petrochemical 8003.
The mineral oil is white oil with a kinematic viscosity of 20mm 2 And/s, model number 20#, from Zhongpetrifaction.
The flame retardant is antimony trioxide (CAS number: 1309-64-4) and aluminum hydroxide (CAS number: 21645-51-2) with a mass ratio of 5:3.
The antioxidant is an antioxidant 1010 and an antioxidant 168, and the mass ratio is 1:1.6, antioxidant 1010 and antioxidant 168 were both purchased from Shanghai Haieui chemical Co.
The anti-UV agent is UV326, which is purchased from Shanghai Haieui chemical industry Co.
The dispersing agent is zinc stearate (CAS number: 557-05-1), and the particle size is 600 meshes.
The auxiliary agent is nano zinc oxide, which is purchased from Shanghai mao fruit nano technology Co., ltd, and has the specification of 15nm.
The second aspect of the embodiment provides a preparation method of a TPE flame-retardant weather-resistant material for a photovoltaic cable, which is to mix and input preparation raw materials into a double-screw extruder for granulation.
The temperature of each section of the double-screw extruder is as follows: zone 1 200 ℃, zone 2, zone 205 ℃, zone 3, zone 210 ℃, zone 4, zone 210 ℃, zone 5, zone 215 ℃, zone 6, zone 215 ℃, zone 7, zone 220, zone 8, zone 225 ℃, zone 9, zone 225, zone 10, zone 230, zone 11, zone 235, zone 12, zone 240, and twin screw extruder head temperature is 240 ℃.
Example 2
The first aspect of the embodiment provides a TPE flame-retardant weather-resistant material for a photovoltaic cable, which is prepared from the following raw materials in parts by mass: 20 parts of thermoplastic elastomer, 15 parts of host polymer, 20 parts of mineral oil, 15 parts of flame retardant, 0.3 part of antioxidant, 0.3 part of UV resistant agent, 0.2 part of dispersing agent and 0.4 part of auxiliary agent.
The thermoplastic elastomer is SEBS, the breaking elongation of the SEBS is 400%, the tensile strength is 16.0MPa, and the model is mesopetrochemical 503.
The main polymer is polypropylene, the melt index is 2.3g/10min, and the model is medium petrochemical 8003.
The mineral oil is white oil with a kinematic viscosity of 20mm 2 And/s, model number 20#, from Zhongpetrifaction.
The flame retardant is antimony trioxide (CAS number: 1309-64-4) and aluminum hydroxide (CAS number: 21645-51-2) with a mass ratio of 5:3.
The antioxidant is an antioxidant 1010 and an antioxidant 168, and the mass ratio is 1:1.4, antioxidant 1010 and antioxidant 168 were both purchased from Shanghai Haieui chemical Co.
The anti-UV agent is UV329, which is purchased from Shanghai Rui chemical industry Co.
The dispersing agent is zinc stearate (CAS number: 557-05-1), and the particle size is 600 meshes.
The auxiliary agent is nano zinc oxide, which is purchased from Shanghai mao fruit nano technology Co., ltd, and has the specification of 15nm.
The second aspect of the embodiment provides a preparation method of a TPE flame-retardant weather-resistant material for a photovoltaic cable, which is to mix and input preparation raw materials into a double-screw extruder for granulation.
The temperature of each section of the double-screw extruder is as follows: zone 1 200 ℃, zone 2, zone 205 ℃, zone 3, zone 210 ℃, zone 4, zone 210 ℃, zone 5, zone 215 ℃, zone 6, zone 215 ℃, zone 7, zone 220, zone 8, zone 225 ℃, zone 9, zone 225, zone 10, zone 230, zone 11, zone 235, zone 12, zone 240, and twin screw extruder head temperature is 240 ℃.
Example 3
The first aspect of the embodiment provides a TPE flame-retardant weather-resistant material for a photovoltaic cable, which is prepared from the following raw materials in parts by mass: 40 parts of thermoplastic elastomer, 40 parts of host polymer, 40 parts of mineral oil, 35 parts of flame retardant, 0.9 part of antioxidant, 0.8 part of UV resistant agent, 0.7 part of dispersing agent and 0.8 part of auxiliary agent.
The thermoplastic elastomer is SEBS, the breaking elongation of the SEBS is 400%, the tensile strength is 16.0MPa, and the model is mesopetrochemical 503.
The main polymer is polypropylene, the melt index is 2.3g/10min, and the model is medium petrochemical 8003.
The mineral oil is white oil with a kinematic viscosity of 20mm 2 And/s, model number 20#, from Zhongpetrifaction.
The flame retardant is antimony trioxide (CAS number: 1309-64-4) and aluminum hydroxide (CAS number: 21645-51-2) with a mass ratio of 5:3.
The antioxidant is an antioxidant 1010 and an antioxidant 168, and the mass ratio is 1:2, antioxidant 1010 and antioxidant 168 were both purchased from Shanghai HaieRui chemical Co.
The anti-UV agent is UV329, which is purchased from Shanghai Rui chemical industry Co.
The dispersing agent is zinc stearate (CAS number: 557-05-1), and the particle size is 600 meshes.
The auxiliary agent is nano zinc oxide, which is purchased from Shanghai mao fruit nano technology Co., ltd, and has the specification of 15nm.
The second aspect of the embodiment provides a preparation method of a TPE flame-retardant weather-resistant material for a photovoltaic cable, which is to mix and input preparation raw materials into a double-screw extruder for granulation.
The temperature of each section of the double-screw extruder is as follows: zone 1 200 ℃, zone 2, zone 205 ℃, zone 3, zone 210 ℃, zone 4, zone 210 ℃, zone 5, zone 215 ℃, zone 6, zone 215 ℃, zone 7, zone 220, zone 8, zone 225 ℃, zone 9, zone 225, zone 10, zone 230, zone 11, zone 235, zone 12, zone 240, and twin screw extruder head temperature is 240 ℃.
Comparative example 1
The first aspect of the comparative example provides a TPE flame-retardant weather-resistant material for a photovoltaic cable, which is prepared from the following raw materials in parts by mass: 15 parts of thermoplastic elastomer, 10 parts of host polymer, 20 parts of mineral oil, 18 parts of flame retardant, 0.2 part of antioxidant, 0.5 part of UV resistant agent, 0.5 part of dispersing agent and 0.5 part of auxiliary agent.
The thermoplastic elastomer is SEBS, the breaking elongation of the SEBS is 400%, the tensile strength is 16.0MPa, and the model is mesopetrochemical 503.
The main polymer is polypropylene, the melt index is 2.3g/10min, and the model is medium petrochemical 8003.
The mineral oil is white oil with a kinematic viscosity of 20mm 2 And/s, model number 20#, from Zhongpetrifaction.
The flame retardant is antimony trioxide (CAS number: 1309-64-4) and aluminum hydroxide (CAS number: 21645-51-2) with a mass ratio of 5:3.
The antioxidant is an antioxidant 1010 and an antioxidant 168, and the mass ratio is 1:1.6, antioxidant 1010 and antioxidant 168 were both purchased from Shanghai Haieui chemical Co.
The anti-UV agent is UV326, which is purchased from Shanghai Haieui chemical industry Co.
The dispersing agent is zinc stearate (CAS number: 557-05-1), and the particle size is 600 meshes.
The auxiliary agent is nano zinc oxide, which is purchased from Shanghai mao fruit nano technology Co., ltd, and has the specification of 15nm.
The second aspect of the comparative example provides a preparation method of TPE flame-retardant weather-resistant material for photovoltaic cables, which is to mix and input preparation raw materials into a double-screw extruder for granulation.
The temperature of each section of the double-screw extruder is as follows: zone 1 200 ℃, zone 2, zone 205 ℃, zone 3, zone 210 ℃, zone 4, zone 210 ℃, zone 5, zone 215 ℃, zone 6, zone 215 ℃, zone 7, zone 220, zone 8, zone 225 ℃, zone 9, zone 225, zone 10, zone 230, zone 11, zone 235, zone 12, zone 240, and twin screw extruder head temperature is 240 ℃.
Comparative example 2
The first aspect of the embodiment provides a TPE flame-retardant weather-resistant material for a photovoltaic cable, which is prepared from the following raw materials in parts by mass: 30 parts of thermoplastic elastomer, 20 parts of host polymer, 30 parts of mineral oil, 18 parts of flame retardant, 0.2 part of antioxidant, 0.5 part of anti-UV agent and 0.5 part of dispersing agent.
The thermoplastic elastomer is SEBS, and the model is medium petrochemical 503.
The host polymer is polypropylene, the melt index is 1.3g/10min, and the model is medium petrochemical 4901.
The mineral oil is white oil with a kinematic viscosity of 5mm 2 And/s, model number 5#, from Zhongpetrifaction.
The flame retardant is antimony trioxide (CAS number: 1309-64-4) and aluminum hydroxide (CAS number: 21645-51-2) with a mass ratio of 5:3.
The antioxidant is an antioxidant 1010 and an antioxidant 168, and the mass ratio is 1:1.6, antioxidant 1010 and antioxidant 168 were both purchased from Shanghai Haieui chemical Co.
The anti-UV agent is UV326, which is purchased from Shanghai Haieui chemical industry Co.
The dispersing agent is zinc stearate (CAS number: 557-05-1), and the particle size is 600 meshes.
The auxiliary agent is nano zinc oxide, which is purchased from Shanghai mao fruit nano technology Co., ltd, and has the specification of 15nm.
The second aspect of the embodiment provides a preparation method of a TPE flame-retardant weather-resistant material for a photovoltaic cable, which is to mix and input preparation raw materials into a double-screw extruder for granulation.
The temperature of each section of the double-screw extruder is as follows: zone 1 200 ℃, zone 2, zone 205 ℃, zone 3, zone 210 ℃, zone 4, zone 210 ℃, zone 5, zone 215 ℃, zone 6, zone 215 ℃, zone 7, zone 220, zone 8, zone 225 ℃, zone 9, zone 225, zone 10, zone 230, zone 11, zone 235, zone 12, zone 240, and twin screw extruder head temperature is 240 ℃.
Performance testing
1. Tensile Strength test
Test object: examples 1-3, comparative examples 1-2 TPE flame retardant and weather resistant materials for photovoltaic cables
Test standard: GB/T33594 and record the results into Table 1
2. Flame retardant Properties
Test object: examples 1-3, comparative examples 1-2 TPE flame retardant and weather resistant materials for photovoltaic cables
Test standard: UL 94, and record the results in Table 1
3. Weather resistance test
Test object: examples 1-3, comparative examples 1-2 TPE flame retardant and weather resistant materials for photovoltaic cables
The testing method comprises the following steps: maintaining the test object at 80deg.C for 8 hr, maintaining at-40deg.C for 8 hr, repeating the cycle for 30 times (480 hr), and observing whether the color of the material is obviously faded
TABLE 1

Claims (10)

1. The TPE flame-retardant weather-resistant material for the photovoltaic cable is characterized by at least comprising the following components in parts by mass: 20-40 parts of thermoplastic elastomer, 15-40 parts of host polymer, 20-40 parts of mineral oil, 10-40 parts of flame retardant, 0.01-1 part of antioxidant, 0.01-1 part of UV resistant agent, 0.01-1 part of dispersing agent and 0.01-1 part of auxiliary agent.
2. The TPE flame retardant and weather resistant material for a photovoltaic cable according to claim 1, wherein the thermoplastic elastomer comprises at least one of TPU, TPS, TPO, TPV, TPEE, TPA; the thermoplastic elastomer at least comprises TPS; the TPS at least comprises SEBS.
3. The TPE flame retardant and weather resistant material for photovoltaic cables according to claim 2, wherein the SEBS has a melt index of more than 8g/min and a heat distortion temperature of more than 50 ℃.
4. The TPE flame retardant weatherable material for a photovoltaic cable according to claim 1, wherein the polyolefin comprises at least polypropylene.
5. The TPE flame retardant and weather resistant material for photovoltaic cables according to claim 4, wherein the melt flow rate of the polypropylene is not less than 2.0g/10min, and the heat distortion temperature is not less than 90 ℃.
6. The TPE flame retardant and weather resistant material for photovoltaic cables according to claim 1, wherein the mass ratio of the host polymer to the thermoplastic elastomer is 1: (1-1.8).
7. The TPE flame-retardant weather-resistant material for photovoltaic cables according to claim 1, wherein the flame retardant masterbatch comprises at least one of zinc oxide, aluminum oxide, and polyphosphate.
8. The TPE flame retardant weatherable material for a photovoltaic cable according to claim 1, wherein the antioxidant comprises hindered phenolic antioxidant 1010 and phosphite antioxidant 168; the mass ratio of the antioxidant 1010 to the antioxidant 168 is 1: (1-2.5).
9. The TPE flame retardant and weather resistant material for photovoltaic cables according to claim 1, wherein the flame retardant is an inorganic component; the inorganic component at least comprises one of aluminum oxide, aluminum hydroxide, magnesium hydroxide and antimony trioxide.
10. A method for preparing a TPE flame retardant and weather resistant material for photovoltaic cables according to any one of claims 1 to 9, comprising the steps of: mixing the preparation raw materials according to the mass parts, and then adding the mixture into a double-screw extruder for granulating;
the temperature of each section of the double-screw extruder is as follows: 200-220 ℃ in zone 1, 210-230 ℃ in zone 2, 210-230 ℃ in zone 3, 210-230 ℃ in zone 4, 210-230 ℃ in zone 5, 220-235 ℃ in zone 6, 220-235 ℃ in zone 7, 220-235 ℃ in zone 8, 220-235 ℃ in zone 9, 225-240 ℃ in zone 10, 225-245 ℃ in zone 11, 225-245 ℃ in zone 12; the temperature of the head of the double-screw extruder is 220-250 ℃.
CN202310747112.2A 2023-06-25 2023-06-25 TPE flame-retardant weather-resistant material for photovoltaic cable and preparation method thereof Withdrawn CN116903984A (en)

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Application publication date: 20231020