CN112442227A - Low-smoke halogen-free cable material and preparation method and application thereof - Google Patents
Low-smoke halogen-free cable material and preparation method and application thereof Download PDFInfo
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Abstract
The invention provides a low-smoke halogen-free cable material and a preparation method and application thereof, wherein the low-smoke halogen-free cable comprises the following components in parts by weight: 10-30 parts of high-density polyethylene, 5-20 parts of thermoplastic elastomer, 0.5-10 parts of ethylene propylene diene monomer, 30-40 parts of aluminum hydroxide and 2-10 parts of magnesium-aluminum hydrotalcite. The low-smoke halogen-free cable material takes high-density polyethylene and thermoplastic elastomer as base materials, aluminum hydroxide and magnesium-aluminum hydrotalcite are added as flame retardants, and the physical properties and the flame retardant effect of the low-smoke halogen-free cable material are improved through reasonable proportioning among substances, so that the low-smoke halogen-free cable material has better flame retardance and mechanical properties, and the safety of the low-smoke halogen-free cable in the using process is improved.
Description
Technical Field
The invention belongs to the technical field of photovoltaic power generation materials, and particularly relates to a low-smoke halogen-free cable material and a preparation method and application thereof.
Background
Photovoltaic power generation is a novel green energy obtaining way and has the characteristics of no pollution, sustainability, simplicity and easy obtainment. The cable for the photovoltaic power generation system is an energy transmission element in the photovoltaic power generation system and plays an important role in a photovoltaic power generation assembly. Nowadays, the use of special photovoltaic cables in photovoltaic power generation systems has become a trend, and the current photovoltaic cable related standards, which are newly introduced as the IEC62930 and UL4703 double certification standards, use the more mature EN50618-2014 standard in Europe. The photovoltaic cable needs to meet general requirements of electrical property, mechanical property, flame retardant property and the like, and also needs to meet special requirements of a sheath surface resistance test, a damp-heat test, an acid and alkali resistance test, a heat life test, low smoke zero halogen resistance and the like.
At present, there are many reports on cable materials for photovoltaic power generation systems. CN103881166A discloses a low-smoke halogen-free flame retardant material suitable for photovoltaic cables and a manufacturing method thereof, and the low-smoke halogen-free flame retardant material comprises 30-35% of rubber, 6-10% of polyolefin resin, 6-10% of filling oil, 48-56% of halogen-free flame retardant, 0.5-3% of hydrophobic modifier and 0.1-1% of antioxidant; the method has the advantages of simple process and easy industrial popularization and production, the produced material is a low-smoke environment-friendly product, does not contain halogen, heavy metal and other substances harmful to the environment, and has good surface performance, good low-smoke halogen-free property, excellent water resistance, acid-base corrosion resistance and high and low temperature resistance. CN102731833A discloses a flame retardant material for improving the immersion low-smoke halogen-free resistance performance of a cable, and the raw material formula comprises a flame retardant, a coupling agent, a synergistic coupling agent, a catalyst and a diluent; the preparation method comprises the steps of mixing the flame retardant in a high-speed mixer at a low speed, uniformly mixing the coupling agent, the synergistic coupling agent, the catalyst and the diluent, adding the mixture into the flame retardant which is mixed at the low speed in the high-speed mixer for at least three times, starting the high-speed mixer to mix at a high speed of 30-80 ℃ for 10-30 minutes, taking out the mixture, putting the mixture into an oven to dry at a temperature of 100-150 ℃. Compared with the flame-retardant material for the common cable, the flame-retardant material for the cable can obviously improve the soaking low-smoke halogen-free resistance performance of the cable material after being added into the cable material, and has low cost. CN106832610A discloses a low-cost tear-resistant high-rise building power cable rubber material, which comprises the following raw materials in parts by weight: 40-80 parts of ethylene propylene diene monomer, 15-35 parts of nitrile rubber, 20-40 parts of styrene butadiene rubber, 5-15 parts of carbon fiber, 10-20 parts of fly ash, 4-16 parts of medical stone, 20-30 parts of zeolite powder, 2-4 parts of sulfur, 2-5 parts of composite plasticizer, 1-1.8 parts of accelerator, 1-2 parts of antioxidant, 1-2 parts of anti-aging agent, 1-2 parts of lubricant and the like. The prepared rubber material has good tearing resistance, excellent waterproof and aging resistance, does not contain halogen, and is suitable for the requirements of high-rise buildings on power cables.
Although the cable material with excellent performance is obtained, the cable material can not meet the requirements of IEC standard photovoltaic low-smoke halogen-free materials, and the flame retardance of the prepared cable material still needs to be improved.
Therefore, the development and production of a low-smoke halogen-free cable material with high physical property and high flame retardance have important significance.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a low-smoke halogen-free cable material and a preparation method and application thereof; the low-smoke halogen-free cable material is prepared by selecting high-density polyethylene and a thermoplastic elastomer as base materials, adding ethylene propylene diene monomer, and selecting aluminum hydroxide and magnesium aluminum hydrotalcite to be matched as a flame retardant, so that the low-smoke halogen-free cable material has excellent flame retardant property, can meet the requirements of low-smoke halogen-free cables on physical properties and flame retardant property, and has high application value.
In order to achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, the invention provides a low-smoke halogen-free cable material, which comprises the following raw materials in parts by weight: 10-30 parts of high-density polyethylene, 5-20 parts of thermoplastic elastomer, 0.5-10 parts of ethylene propylene diene monomer, 30-40 parts of aluminum hydroxide and 2-10 parts of magnesium-aluminum hydrotalcite.
The high density polyethylene may be 12 parts by weight, 14 parts by weight, 16 parts by weight, 18 parts by weight, 20 parts by weight, 22 parts by weight, 24 parts by weight, 26 parts by weight, 28 parts by weight, or the like.
The thermoplastic elastomer may be 7 parts by weight, 9 parts by weight, 11 parts by weight, 13 parts by weight, 15 parts by weight, 17 parts by weight, 19 parts by weight, or the like.
The ethylene propylene diene monomer may be 1 part by weight, 2 parts by weight, 3 parts by weight, 4 parts by weight, 5 parts by weight, 6 parts by weight, 7 parts by weight, 8 parts by weight, 9 parts by weight, or the like.
The aluminum hydroxide may be 31 parts by weight, 32 parts by weight, 33 parts by weight, 34 parts by weight, 35 parts by weight, 36 parts by weight, 37 parts by weight, 38 parts by weight, 39 parts by weight, or the like.
The magnesium aluminum hydrotalcite may be 3 parts by weight, 4 parts by weight, 5 parts by weight, 6 parts by weight, 7 parts by weight, 8 parts by weight, 9 parts by weight, or the like.
According to the low-smoke halogen-free cable material provided by the invention, the high-density polyethylene and the thermoplastic elastomer are selected as the base materials, and the ethylene propylene diene monomer is added, so that the low-smoke halogen-free cable material has better stability and elasticity.
Secondly, adding magnesium-aluminum hydrotalcite and aluminum hydroxide as flame retardants; the magnesium-aluminum hydrotalcite has the initial decomposition temperature of both a high-temperature section and a low-temperature section, can widen the flame-retardant temperature range, has the functions of flame retardance and smoke abatement, and can improve the flame retardance of the material when being used together with aluminum hydroxide; during the heating process, the magnalium hydrotalcite and the aluminum hydroxide can form a carbon foam layer, which has the protection effect on the polymer, heat insulation and oxygen isolation, the smoke density and toxic gas during the combustion can be greatly reduced, and meanwhile, the hydrogen halide gas is not generated; in addition, the low-smoke halogen-free cable material with excellent physical property and flame retardant property is obtained by reasonably proportioning the aluminum hydroxide and the magnesium-aluminum hydrotalcite.
Preferably, the thermoplastic elastomer is an ethylene-octene copolymer.
Preferably, the ethylene-octene copolymer has a shore a hardness of 80-90, such as 81, 82, 83, 84, 85, 86, 87, 88, or 89, and specific values therebetween, for brevity and clarity, are not intended to be exhaustive or to include specific values within the stated ranges.
Preferably, the particle size of the aluminum hydroxide is 1 to 2 μm, such as 1 μm, 1.2 μm, 1.4 μm, 1.5 μm, 1.6 μm, 1.8 μm, 1.9 μm or 2 μm, and the specific values therebetween are not exhaustive, and the invention is not limited to the specific values included in the range for brevity and conciseness.
Preferably, the molar ratio of aluminum to magnesium in the magnesium-aluminum hydrotalcite is 1 (2.5-3), such as 1:2.55, 1:2.6, 1:2.65, 1:2.7, 1:2.75, 1:2.8, 1:2.85, 1:2.9, or 1: 2.95.
As a preferred technical scheme, when the molar ratio of aluminum to magnesium in the selected magnesium-aluminum hydrotalcite is 1 (2.5-3), the prepared low-smoke halogen-free cable material has excellent flame retardant performance, because the magnesium-aluminum hydrotalcite flame retardant added into the polymer matrix emits carbon dioxide and water vapor to dilute the concentration of combustible gas during thermal decomposition, and the magnesium oxide and the aluminum oxide generated during decomposition can form a heat insulation layer and absorb heat during decomposition, so that the surface temperature of the polymer matrix is reduced, and the flame retardant effect is achieved; if the molar ratio of aluminum to magnesium in the magnesium-aluminum hydrotalcite exceeds or is lower than 1 (2.5-3), the absorbed heat during decomposition is reduced, and the flame retardant effect is slightly poor.
Preferably, the low-smoke zero-halogen cable material further comprises any one or a combination of at least two of a stabilizer, a silicone master batch or an antioxidant.
Preferably, the content of the stabilizer in the low-smoke halogen-free cable material is 1 to 3 parts by weight, such as 1.2 parts by weight, 1.4 parts by weight, 1.6 parts by weight, 1.8 parts by weight, 2 parts by weight, 2.2 parts by weight, 2.4 parts by weight, 2.6 parts by weight or 2.8 parts by weight, and specific values therebetween are limited to space and for brevity, the invention is not exhaustive and specific values included in the range are not included.
Preferably, the stabilizer comprises any one of calcium stearate, zinc stearate or tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] pentaerythritol ester or a combination of at least two thereof.
Preferably, the content of the silicone master batch in the low-smoke halogen-free cable material is 1 to 3 parts by weight, such as 1.2 parts by weight, 1.4 parts by weight, 1.6 parts by weight, 1.8 parts by weight, 2 parts by weight, 2.2 parts by weight, 2.4 parts by weight, 2.6 parts by weight or 2.8 parts by weight, and specific values therebetween are limited to space and for the sake of brevity, and the invention is not exhaustive of the specific values included in the range.
Preferably, the amount of the antioxidant in the low-smoke halogen-free cable material is 1 to 2 parts by weight, such as 1.1 part by weight, 1.2 parts by weight, 1.3 parts by weight, 1.4 parts by weight, 1.5 parts by weight, 1.6 parts by weight, 1.7 parts by weight, 1.8 parts by weight or 1.9 parts by weight, and specific values therebetween are limited by space and for brevity, and the invention is not exhaustive of the specific values included in the range.
Preferably, the low-smoke halogen-free cable material comprises the following components in parts by weight: 10-30 parts of high-density polyethylene, 5-20 parts of thermoplastic elastomer, 0.5-10 parts of ethylene propylene diene monomer, 30-40 parts of aluminum hydroxide, 2-10 parts of magnesium-aluminum hydrotalcite, 1-3 parts of stabilizer, 1-3 parts of silicone master batch and 1-2 parts of antioxidant.
In a second aspect, the present invention provides a method for preparing the low smoke zero halogen cable material according to the first aspect, the method comprises the following steps:
(1) mixing and extruding high-density polyethylene, thermoplastic elastomer, ethylene propylene diene monomer, aluminum hydroxide, magnesium aluminum hydrotalcite, optional stabilizer, optional silicone master batch and optional antioxidant to obtain blended particles;
(2) preparing the blended particles obtained in the step (1) into wires, and then carrying out irradiation crosslinking on the wires to obtain the low-smoke halogen-free cable material.
Preferably, the mixing method in the step (1) is banburying.
Preferably, the banburying temperature is 160-175 ℃, for example, 160 ℃, 162 ℃, 165 ℃, 170 ℃, 172 ℃ or 175 ℃, and the specific values therebetween are limited by space and for simplicity, and the invention is not exhaustive of the specific values included in the range.
Preferably, the mixing time in step (1) is 15-25 min, such as 15min, 16min, 17min, 20min, 21min, 22min, 24min or 25min, and the specific values therebetween are limited by space and for the sake of brevity, and the invention is not exhaustive.
Preferably, the extrusion method in the step (1) is single screw extruder extrusion.
Preferably, the single screw extruder comprises a first zone, a second zone, a third zone, a fourth zone, a fifth zone, a sixth zone and a seventh zone connected in sequence.
Preferably, the temperature of the first zone is 110 to 115 ℃ (for example, 110 ℃, 111 ℃, 112 ℃, 113 ℃, 114 ℃ or 115 ℃, etc.), the temperature of the second zone is 115 to 120 ℃ (for example, 115 ℃, 116 ℃, 117 ℃, 118 ℃, 119 ℃, or 120 ℃, etc.), the temperature of the third zone is 115 to 120 ℃ (for example, 115 ℃, 116 ℃, 117 ℃, 118 ℃, 119 ℃, or 120 ℃, etc.), the temperature of the fourth zone is 120 to 125 ℃ (for example, 120 ℃, 121 ℃, 122 ℃, 123 ℃, 124 ℃, or 125 ℃, etc.), the temperature of the fifth zone is 120 to 125 ℃ (for example, 120 ℃, 121 ℃, 122 ℃, 123 ℃, 124 ℃, or 125 ℃, etc.), the temperature of the sixth zone is 120 to 130 ℃ (for example, 120 ℃, 122 ℃, 124 ℃, 126 ℃, 128 ℃, or 130 ℃, etc.), the temperature of the seventh zone is 125 to 130 ℃ (for example, 125 ℃, 126 ℃, 128 ℃, 127 ℃, 125 ℃, 127 ℃ or 125 ℃, 129 ℃ or 130 ℃, etc.).
Preferably, the forming of the strand of step (2) is performed by a strand extruder.
Preferably, the strand extruder includes a zone a, a zone B, a zone C, and a zone D, which are connected in sequence.
Preferably, the temperature of the zone A is 110 to 120 ℃ (for example, 110 ℃, 112 ℃, 114 ℃, 116 ℃, 118 ℃ or 120 ℃, etc.), the temperature of the zone B is 135 to 145 ℃ (for example, 135 ℃, 137 ℃, 139 ℃, 140 ℃, 142 ℃ or 145 ℃, etc.), the temperature of the zone C is 145 to 155 ℃ (for example, 145 ℃, 147 ℃, 150 ℃, 151 ℃, 152 ℃ or 155 ℃, etc.), and the temperature of the zone D is 150 to 160 ℃ (for example, 150 ℃, 152 ℃, 154 ℃, 156 ℃, 158 ℃ or 160 ℃, etc.).
In a third aspect, the invention provides a low smoke zero halogen cable material as described in the first aspect, and its application in a photovoltaic power generation system.
Compared with the prior art, the invention has the following beneficial effects:
(1) the low-smoke halogen-free cable material provided by the invention is a halogen-free low-smoke environment-friendly material; through the selection and the matching use of materials, the obtained low-smoke halogen-free cable material has excellent flame retardance while having better mechanical properties, improves the safety of the cable in the using process, and can meet the requirements of building wires and cables on high elongation and high flame retardance.
(2) The low-smoke halogen-free cable material provided by the invention can pass a single vertical combustion test, and has the tensile strength of more than or equal to 12.7MPa, the elongation at break of more than or equal to 225%, the smoke density and light transmittance of more than or equal to 69%, and high low-smoke halogen-free resistance at 90 ℃.
Detailed Description
The technical solution of the present invention is further explained by the following embodiments. It should be understood by those skilled in the art that the examples are only for the understanding of the present invention and should not be construed as the specific limitations of the present invention.
The reagents or materials used in the following examples are available from conventional manufacturers, with specific manufacturers and models as shown in table 1:
TABLE 1
Examples 1 to 5
The specific components of the low-smoke halogen-free cable material are shown in Table 2, and the unit of the usage of each component is 'part by weight'.
TABLE 2
The preparation method comprises the following steps:
(1) melting and blending high-density polyethylene, a thermoplastic elastomer, ethylene propylene diene monomer rubber, aluminum hydroxide, magnesium aluminum hydrotalcite and a stabilizer (composed of 50 parts by weight of calcium stearate, 10 parts by weight of zinc stearate and 40 parts by weight of tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] pentaerythritol ester) for 25min at 160 ℃ by using an internal mixer, and then preparing into particles by using a single-screw extruder to obtain blended particles; the single-screw extruder comprises a first zone, a second zone, a third zone, a fourth zone, a fifth zone, a sixth zone and a seventh zone which are sequentially connected, materials sequentially pass through the zones, the working temperature of the first zone is set to be 110 ℃, the working temperature of the second zone is set to be 115 ℃, the working temperature of the third zone is set to be 115 ℃, the working temperature of the fourth zone is set to be 120 ℃, the working temperature of the fifth zone is set to be 120 ℃, the working temperature of the sixth zone is set to be 120 ℃, and the working temperature of the seventh zone is set to be 125 ℃;
(2) the blending particle obtained in the step (1), the wire extruder comprises an A area, a B area, a C area and a D area which are sequentially connected, the particle sequentially passes through the areas, the working temperature of the A area is 110 ℃, the working temperature of the B area is 135 ℃, the working temperature of the C area is 145 ℃, the working temperature of the D area is 150 ℃, an electron accelerator is used for irradiation crosslinking after a wire rod is obtained, the irradiation dose is 12Mrad, and the low-smoke zero-halogen cable material is obtained.
Example 6
A low-smoke halogen-free cable material is different from the material in the embodiment 1 only in that aluminum hydroxide with the particle size of 1 mu m is adopted to replace aluminum hydroxide with the particle size of 2 mu m, and other components, the using amount and the preparation method are the same as those in the embodiment 1.
Example 7
The low-smoke halogen-free cable material is different from the material in the embodiment 1 only in that the magnesium-aluminum hydrotalcite with the magnesium-aluminum molar ratio of 1:2.5 is adopted to replace the magnesium-aluminum hydrotalcite with the magnesium-aluminum molar ratio of 1:3, and other components, the using amount and the preparation method are the same as those in the embodiment 1.
Example 8
The low-smoke halogen-free cable material is different from the material in the embodiment 1 only in that the magnesium-aluminum hydrotalcite with the magnesium-aluminum molar ratio of 1:2 is adopted to replace the magnesium-aluminum hydrotalcite with the magnesium-aluminum molar ratio of 1:3, and other components, the using amount and the preparation method are the same as those in the embodiment 1.
Comparative example 1
A low-smoke halogen-free cable material is different from the material in the embodiment 1 only in that the magnesium-aluminum hydrotalcite with the aluminum-magnesium molar ratio of 1:3 is added in 0.1 part by weight, the aluminum hydroxide is added in 40.9 parts by weight, and other components, the using amount and the preparation method are the same as those in the embodiment 1.
Comparative example 2
A low-smoke halogen-free cable material is different from that of example 1 only in that 15 parts by weight of magnesium-aluminum hydrotalcite with the aluminum-magnesium molar ratio of 1:3 is added, 26 parts by weight of aluminum hydroxide is added, and other components, the using amount and the preparation method are the same as those of example 1.
Comparative example 3
A low-smoke halogen-free cable material is different from that of example 1 only in that magnesium aluminum hydrotalcite with the molar ratio of aluminum to magnesium being 1:3 is not added, the adding amount of aluminum hydroxide is 41 parts by weight, and other components, the using amount and the preparation method are the same as those of example 1.
Comparative example 4
A low-smoke halogen-free cable material is different from that of example 1 only in that aluminum hydroxide is not added, the addition amount of magnesium-aluminum hydrotalcite with the molar ratio of aluminum to magnesium being 1:3 is 41 parts by weight, and other components, the use amount and the preparation method are the same as those of example 1.
Comparative example 5
A low-smoke halogen-free cable material, which is different from the material of example 1 only in that linear low-density polyethylene (exxonmobil chemical, 3518CB) is used to replace high-density polyethylene, and other components, the amount and the preparation method are the same as those of example 1.
Performance testing
(1) Tensile strength, elongation at break: testing according to GB/T2951 general test method for low smoke zero halogen and sheath materials of cables and optical cables;
(2)90 degree low smoke zero halogen resistance: testing according to GB/T12706-2008 'Power Cable execution Standard';
(4) oxygen index: ISO 4586 "high pressure laminated sheet for decoration (HPL), thin sheet made of thermosetting resin";
(5) single vertical combustion: testing according to GB/T18380-2008 'Combustion test under Cable and Cable flame conditions';
(6) smoke density light transmittance: GB/T8323.1-2008 "smoke density experiment method guide rules" for testing.
The low-smoke halogen-free cable materials obtained in the embodiments 1 to 8 and the comparative examples 1 to 5 are tested according to the method, and the test results are shown in table 3:
TABLE 3
According to the data in table 3, the low-smoke halogen-free cable provided by the invention has excellent physical properties, high low-smoke halogen-free resistance and excellent flame retardant property.
Specifically, the method comprises the following steps: in the embodiments 1 to 8, the high-density polyethylene is used as the matrix material, the tensile strength of the obtained low-smoke halogen-free cable is 12.7 to 13.8MPa, and is improved by 17 to 27% compared with the tensile strength of the low-smoke halogen-free coiled material obtained by using the linear low-density polyethylene as the matrix in the comparative example 5.
Comparing example 1, comparative example 3 and comparative example 4, it can be seen that if aluminum hydroxide is not added (comparative example 4) or magnesium-aluminum hydrotalcite is not added (comparative example 3), the obtained low-smoke halogen-free cable material can not pass a single vertical combustion test, i.e. the flame retardance is poor, and it is proved that the material with excellent flame retardant effect can be obtained by using aluminum hydroxide and magnesium-aluminum hydrotalcite together; furthermore, as can be seen from comparison of examples 4 and 5 and comparative examples 1 and 2, when the content of aluminum hydroxide in the low-smoke halogen-free cable material is high (comparative example 1), the obtained low-smoke halogen-free cable material can pass the single vertical burning test, but the physical performance parameters such as tensile strength and elongation at break are poor, and when the content of aluminum hydroxide in the material is low (comparative example 2), the obtained low-smoke halogen-free cable material has poor flame retardancy.
As can be seen by comparing the examples 1, 7 and 8, the oxygen index of the example 8 is lower than that of the examples 1 and 7, the flame retardance of the low-smoke halogen-free cable material obtained in the examples 1 and 7 is better than that of the example 8, and the molar ratio of aluminum to magnesium in the magnesium-aluminum hydrotalcite is 1 (2.5-3), so that the finally obtained low-smoke halogen-free cable material has more excellent flame retardance.
The applicant states that the present invention is illustrated a process method of a low smoke zero halogen cable material by the above embodiments, but the present invention is not limited to the above embodiments, that is, it does not mean that the present invention must rely on the above embodiments to be implemented. It should be understood by those skilled in the art that any modification of the present invention, equivalent substitutions of the raw materials of the product of the present invention, addition of auxiliary components, selection of specific modes, etc., are within the scope and disclosure of the present invention.
Claims (10)
1. The low-smoke halogen-free cable material is characterized by comprising the following components in parts by weight: 10-30 parts of high-density polyethylene, 5-20 parts of thermoplastic elastomer, 0.5-10 parts of ethylene propylene diene monomer, 30-40 parts of aluminum hydroxide and 2-10 parts of magnesium-aluminum hydrotalcite.
2. The low smoke zero halogen cable material of claim 1, wherein the thermoplastic elastomer is an ethylene-octene copolymer;
preferably, the Shore A hardness of the ethylene-octene copolymer is 80-90.
3. The low-smoke zero-halogen cable material as claimed in claim 1 or 2, wherein the particle size of the aluminum hydroxide is 1-2 μm.
4. A low-smoke zero-halogen cable material as claimed in any one of claims 1 to 3, wherein the molar ratio of aluminum to magnesium in the magnesium-aluminum hydrotalcite is 1 (2.5-3).
5. The low smoke zero halogen cable material according to any one of claims 1 to 4, wherein the low smoke zero halogen cable material further comprises any one or a combination of at least two of a stabilizer, a silicone master batch or an antioxidant;
preferably, the content of the stabilizer in the low-smoke halogen-free cable material is 1-3 parts by weight;
preferably, the stabilizer comprises any one of calcium stearate, zinc stearate or tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] pentaerythritol ester or a combination of at least two of the same;
preferably, the content of the silicone master batch in the low-smoke halogen-free cable material is 1-3 parts by weight;
preferably, the content of the antioxidant in the low-smoke halogen-free cable material is 1-2 parts by weight.
6. The low-smoke zero-halogen cable material as claimed in any one of claims 1 to 5, wherein the low-smoke zero-halogen cable material comprises the following components in parts by weight: 10-30 parts of high-density polyethylene, 5-20 parts of thermoplastic elastomer, 0.5-10 parts of ethylene propylene diene monomer, 30-40 parts of aluminum hydroxide, 2-10 parts of magnesium-aluminum hydrotalcite, 1-3 parts of stabilizer, 1-3 parts of silicone master batch and 1-2 parts of antioxidant.
7. A preparation method of the low-smoke zero-halogen cable material as claimed in any one of claims 1 to 6, characterized in that the preparation method comprises the following steps:
(1) mixing and extruding high-density polyethylene, thermoplastic elastomer, ethylene propylene diene monomer, aluminum hydroxide, magnesium aluminum hydrotalcite, optional stabilizer, optional silicone master batch and optional antioxidant to obtain blended particles;
(2) preparing the blended particles obtained in the step (1) into wires, and then carrying out irradiation crosslinking on the wires to obtain the low-smoke halogen-free cable material.
8. The production method according to claim 7, wherein the mixing method in the step (1) is banburying;
preferably, the banburying temperature is 160-175 ℃;
preferably, the mixing time in the step (1) is 15-25 min;
preferably, the extrusion method of the step (1) is single-screw extruder extrusion;
preferably, the single screw extruder comprises a first zone, a second zone, a third zone, a fourth zone, a fifth zone, a sixth zone and a seventh zone which are connected in sequence;
preferably, the temperature of the first zone is 110-115 ℃, the temperature of the second zone is 115-120 ℃, the temperature of the third zone is 115-120 ℃, the temperature of the fourth zone is 120-125 ℃, the temperature of the fifth zone is 120-125 ℃, the temperature of the sixth zone is 120-130 ℃, and the temperature of the seventh zone is 125-130 ℃.
9. The production method according to claim 7 or 8, wherein the forming into a strand of step (2) is performed by a strand extruder;
preferably, the strand extruder comprises a zone a, a zone B, a zone C and a zone D connected in sequence;
preferably, the temperature of the zone A is 110-120 ℃, the temperature of the zone B is 135-145 ℃, the temperature of the zone C is 145-155 ℃, and the temperature of the zone D is 150-160 ℃.
10. Use of a low smoke zero halogen cable material as claimed in any one of claims 1 to 6 in a photovoltaic power generation system.
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| CN114213742A (en) * | 2021-12-29 | 2022-03-22 | 江苏达胜高聚物股份有限公司 | High-flame-retardance low-smoke halogen-free cable material and preparation method and application thereof |
| CN114276604A (en) * | 2021-12-31 | 2022-04-05 | 江苏达胜高聚物股份有限公司 | High-insulation photovoltaic cable material and preparation method and application thereof |
| CN115926288A (en) * | 2022-12-08 | 2023-04-07 | 合肥兴联通讯有限公司 | Elastomer toughened and crosslinked HDPE halogen-free smoke-suppression flame-retardant cable material and preparation method thereof |
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| CN110527218A (en) * | 2019-09-18 | 2019-12-03 | 天长市格瑞电缆材料有限公司 | A kind of non-halogen flame-retardant cable |
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| CN103524896A (en) * | 2013-09-30 | 2014-01-22 | 江苏达胜高聚物有限公司 | Halogen-free insulated cable material for irradiation crosslinking EPCV photovoltaics at temperature of 125 DEG C and preparation method |
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| CN114213742A (en) * | 2021-12-29 | 2022-03-22 | 江苏达胜高聚物股份有限公司 | High-flame-retardance low-smoke halogen-free cable material and preparation method and application thereof |
| CN114276604A (en) * | 2021-12-31 | 2022-04-05 | 江苏达胜高聚物股份有限公司 | High-insulation photovoltaic cable material and preparation method and application thereof |
| CN114276604B (en) * | 2021-12-31 | 2023-08-18 | 江苏达胜高聚物股份有限公司 | High-insulation photovoltaic cable material and preparation method and application thereof |
| CN115926288A (en) * | 2022-12-08 | 2023-04-07 | 合肥兴联通讯有限公司 | Elastomer toughened and crosslinked HDPE halogen-free smoke-suppression flame-retardant cable material and preparation method thereof |
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| CN112442227B (en) | 2023-01-10 |
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