CN116731411A - Halogen-free flame-retardant polyolefin elastomer material, and preparation method and application thereof - Google Patents
Halogen-free flame-retardant polyolefin elastomer material, and preparation method and application thereof Download PDFInfo
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- 239000003063 flame retardant Substances 0.000 title claims abstract description 75
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 title claims abstract description 56
- 229920006124 polyolefin elastomer Polymers 0.000 title claims abstract description 55
- 239000000463 material Substances 0.000 title claims abstract description 52
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 16
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 16
- 229920005672 polyolefin resin Polymers 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims description 24
- DXZMANYCMVCPIM-UHFFFAOYSA-L zinc;diethylphosphinate Chemical compound [Zn+2].CCP([O-])(=O)CC.CCP([O-])(=O)CC DXZMANYCMVCPIM-UHFFFAOYSA-L 0.000 claims description 19
- 229920000098 polyolefin Polymers 0.000 claims description 17
- 229920001903 high density polyethylene Polymers 0.000 claims description 14
- 239000004700 high-density polyethylene Substances 0.000 claims description 14
- 229920000034 Plastomer Polymers 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 10
- 238000007493 shaping process Methods 0.000 claims description 10
- JKIJEFPNVSHHEI-UHFFFAOYSA-N Phenol, 2,4-bis(1,1-dimethylethyl)-, phosphite (3:1) Chemical compound CC(C)(C)C1=CC(C(C)(C)C)=CC=C1OP(OC=1C(=CC(=CC=1)C(C)(C)C)C(C)(C)C)OC1=CC=C(C(C)(C)C)C=C1C(C)(C)C JKIJEFPNVSHHEI-UHFFFAOYSA-N 0.000 claims description 7
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 claims description 7
- 229920001684 low density polyethylene Polymers 0.000 claims description 7
- 239000004702 low-density polyethylene Substances 0.000 claims description 7
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 7
- 239000004020 conductor Substances 0.000 claims description 6
- 239000004698 Polyethylene Substances 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 238000012545 processing Methods 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- LPRHLAXCXZTKNI-UHFFFAOYSA-N dibutyl methyl phosphate Chemical compound CCCCOP(=O)(OC)OCCCC LPRHLAXCXZTKNI-UHFFFAOYSA-N 0.000 claims description 3
- JQVXMIPNQMYRPE-UHFFFAOYSA-N ethyl dimethyl phosphate Chemical compound CCOP(=O)(OC)OC JQVXMIPNQMYRPE-UHFFFAOYSA-N 0.000 claims description 3
- XZZNDPSIHUTMOC-UHFFFAOYSA-N triphenyl phosphate Chemical compound C=1C=CC=CC=1OP(OC=1C=CC=CC=1)(=O)OC1=CC=CC=C1 XZZNDPSIHUTMOC-UHFFFAOYSA-N 0.000 claims description 3
- ANPYQJSSFZGXFE-UHFFFAOYSA-N ethyl dipropyl phosphate Chemical compound CCCOP(=O)(OCC)OCCC ANPYQJSSFZGXFE-UHFFFAOYSA-N 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 6
- 238000005452 bending Methods 0.000 description 4
- 229920010126 Linear Low Density Polyethylene (LLDPE) Polymers 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 229920000092 linear low density polyethylene Polymers 0.000 description 3
- 239000004707 linear low-density polyethylene Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 229910001335 Galvanized steel Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000008397 galvanized steel Substances 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- 239000011253 protective coating Substances 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- 229920002725 thermoplastic elastomer Polymers 0.000 description 2
- 239000004711 α-olefin Substances 0.000 description 2
- 206010000369 Accident Diseases 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 1
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
-
- 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
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- 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
- H01B3/441—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 from alkenes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/22—Halogen free composition
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
- C08L2203/202—Applications use in electrical or conductive gadgets use in electrical wires or wirecoating
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/08—Polymer mixtures characterised by other features containing additives to improve the compatibility between two polymers
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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
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/04—Thermoplastic elastomer
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/062—HDPE
-
- 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)
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- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The application provides a halogen-free flame-retardant polyolefin elastomer material, a preparation method and application thereof, and relates to the technical field of flame-retardant materials. The halogen-free flame-retardant polyolefin elastomer material comprises the following components in percentage by mass: 80-150 parts of polyolefin resin, 0.5-1.0 part of mixed antioxidant, 4-5 parts of compatilizer and 100-200 parts of flame retardant, and the prepared halogen-free flame-retardant polyolefin elastomer material has good flexibility and excellent flame-retardant effect.
Description
Technical Field
The application relates to the technical field of halogen-free flame-retardant cables, in particular to a halogen-free flame-retardant polyolefin elastomer material, a preparation method and application thereof.
Background
In recent years, with the rapid development of economy, the demand for electric wires and cables has rapidly increased. In order to avoid the fire accident in the use process of the electric wires and cables, the flame retardance of the electric wires and cables needs to be improved.
At present, a common flame-retardant cable is a halogen-containing flame-retardant cable which takes polyvinyl chloride as an insulating layer, but when the halogen-containing cable is recovered, a large amount of harmful gases such as smoke, hydrogen chloride and the like are released to cause secondary pollution, and the related regulations of environmental regulations are not met, so that a halogen-free environment-friendly flame-retardant cable needs to be developed. The polyolefin has outstanding electrical insulation properties and can be used for preparing an insulating layer of a halogen-free cable. However, the halogen-free cable prepared from the polyolefin material cannot meet the market demand in flame retardant performance, so that the development of a flame retardant polyolefin elastomer material becomes a problem to be solved in the technical field of halogen-free flame retardant cables.
Disclosure of Invention
(one) solving the technical problems
Aiming at the defects of the prior art, the application provides a halogen-free flame-retardant polyolefin elastomer material, a preparation method and application thereof, and solves the technical problem of poor flame retardant property of the conventional polyolefin material for preparing a halogen-free flame-retardant cable.
(II) technical scheme
In order to achieve the above purpose, the application is realized by the following technical scheme:
the halogen-free flame-retardant polyolefin elastomer material comprises the following components in percentage by mass:
80-150 parts of polyolefin resin;
0.5-1.0 part of mixed antioxidant;
4-5 parts of compatilizer;
100-200 parts of flame retardant.
Preferably, the mixed antioxidant comprises an antioxidant 1010 and an antioxidant 168, wherein the mass ratio of the antioxidant 1010 to the antioxidant 168 is 1: (1-2).
Preferably, the polyolefin resin comprises high-density polyethylene, low-density polyethylene, polyolefin plastomer and polyolefin elastomer, wherein the mass ratio of the high-density polyethylene, the low-density polyethylene, the polyolefin plastomer and the polyolefin elastomer is 1 (2-5): 3-8): 4-10.
Preferably, the low density polyethylene is linear.
Preferably, the compatilizer is at least one selected from maleic anhydride grafted PE and maleic anhydride grafted PP.
Preferably, the flame retardant is at least one selected from triphenyl phosphate, dimethyl ethyl phosphate, methyl dibutyl phosphate and ethyl dipropyl phosphate.
In another aspect, a method of preparing a halogen-free flame retardant polyolefin elastomer material includes the steps of:
(1) Uniformly mixing polyolefin resin, a mixed antioxidant, a compatilizer and a flame retardant to obtain a mixture;
(2) Extruding the mixture by an extruder to form a thick sheet, wherein the processing temperature of the extruder is 170-180 ℃, 200-220 ℃ and 185-195 ℃ in sequence.
(3) Sequentially carrying out longitudinal stretching and transverse stretching treatment on the thick sheet to form a sheet;
(4) And cooling the sheet at the temperature of 40-45 ℃ to obtain the halogen-free flame-retardant polyolefin elastomer material.
Preferably, the longitudinal stretching process is as follows: the preheating temperature is 110-120 ℃, the stretching temperature is 90-100 ℃, the stretching multiplying power is 1.8-3.0, and the shaping temperature is 120-130 ℃.
Preferably, the transverse stretching process is as follows: the preheating temperature is 130-140 ℃, the stretching temperature is 125-135 ℃, the stretching multiplying power is 4-6, and the shaping temperature is 135-145 ℃.
Application of halogen-free flame-retardant polyolefin elastomer material in preparation of halogen-free flame-retardant cable with nominal section of 1X 50mm 2 The conductor diameter was 8.9mm and the cable weight 581Kg/Km.
(III) beneficial effects
The application provides a halogen-free flame-retardant polyolefin elastomer material, and a preparation method and application thereof. Compared with the prior art, the method has the following beneficial effects:
the halogen-free flame-retardant polyolefin elastomer material comprises a flame retardant, and the flame retardant is used for modifying polyolefin, so that the flame retardance of the polyolefin material is improved. The halogen-free flame-retardant polyolefin elastomer material also comprises high-density polyethylene (HDPE), linear low-density polyethylene (LLDPE), polyolefin plastomer (POP) and polyolefin elastomer (POE), wherein the densities of the high-density polyethylene (HDPE), the linear low-density polyethylene (LLDPE), the polyolefin plastomer (POP) and the polyolefin elastomer (POE) are sequentially increased from high to low, and the content of comonomer alpha-olefin is sequentially increased, the material performance is transited from thermoplastic plastics to thermoplastic elastomers and gradually shows high elasticity, so that the four materials can play a synergistic effect under the condition that the mass ratio of the high-density polyethylene to the low-density polyethylene to the polyolefin plastomer to the polyolefin elastomer is 1 (2-5): (3-8): (4-10), and the flexibility of the halogen-free flame-retardant polyolefin elastomer material is increased for 1000 ten thousands to 2500 ten thousands of times.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application are clearly and completely described, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Example 1:
the embodiment provides a preparation method of a halogen-free flame retardant polyolefin elastomer material, which comprises the following steps:
(1) According to the mass ratio of 80:0.5:4:100, respectively taking polyolefin resin, a mixed antioxidant, a compatilizer and a flame retardant, then adding the polyolefin resin, the mixed antioxidant, the compatilizer and the flame retardant into a mixer, and uniformly stirring and mixing to prepare a mixture; wherein the polyolefin resin comprises high-density polyethylene, linear low-density polyethylene, polyolefin plastomer and polyolefin elastomer in a mass ratio of 1:2:3:4; the mixed antioxidant comprises the following components in percentage by mass: 1 antioxidant 1010 and antioxidant 168, wherein the compatilizer is maleic anhydride grafted PP, and the flame retardant is triphenyl phosphate.
(2) Extruding the mixture by an extruder to form a thick sheet, wherein the processing temperature of the extruder is 170 ℃, 200 ℃ and 185 ℃ in sequence.
(3) Sequentially carrying out longitudinal stretching and transverse stretching treatment on the thick sheet, wherein the longitudinal stretching process is that the preheating temperature is 110 ℃, the stretching temperature is 90 ℃, the stretching multiplying power is 1.8, the shaping temperature is 120 ℃, the transverse stretching process is that the preheating temperature is 130 ℃, the stretching temperature is 125 ℃, the stretching multiplying power is 4, and the shaping temperature is 135 ℃, so as to form a sheet;
(4) After cooling the sheet at 40 ℃, the halogen-free flame retardant polyolefin elastomer material is obtained.
The prepared halogen-free flame-retardant polyolefin elastomer material is resistant to bending for 1000 ten thousand times.
A single 1kW cable is prepared by using the prepared halogen-free flame-retardant polyolefin elastomer material as an insulating layer, and the prepared cable structure comprises: the copper wire core, the insulating layer, the sealing sheath and the protective covering layer. The sealing sheath adopts an aluminum extrusion sealing sheath, the protective coating adopts a galvanized steel strip, and a protective coating formed by extruding a polyethylene sleeve is added outside the galvanized steel strip. The preparation process is carried out according to the conventional process in the field.
Nominal section 1 x 50mm of prepared cable 2 The conductor diameter was 8.8mm and the cable weight was 580Kg/Km.
Example 2
The embodiment provides a preparation method of a halogen-free flame retardant polyolefin elastomer material, which comprises the following steps:
(1) According to the mass ratio of 100:0.7:4.5:150, respectively taking polyolefin resin, a mixed antioxidant, a compatilizer and a flame retardant, then adding the polyolefin resin, the mixed antioxidant, the compatilizer and the flame retardant into a mixer, and uniformly stirring and mixing to prepare a mixture; wherein the polyolefin resin comprises high-density polyethylene, linear low-density polyethylene, polyolefin plastomer and polyolefin elastomer in a mass ratio of 1:3:4:6; the mixed antioxidant comprises the following components in percentage by mass: 1.5 antioxidant 1010 and antioxidant 168, wherein the compatilizer is maleic anhydride grafted PE, and the flame retardant is dimethyl ethyl phosphate.
(2) The mixture was extruded into slabs by an extruder at 175 ℃, 210 ℃ and 190 ℃ in that order.
(3) Sequentially carrying out longitudinal stretching and transverse stretching treatment on the thick sheet, wherein the longitudinal stretching process is that the preheating temperature is 115 ℃, the stretching temperature is 95 ℃, the stretching multiplying power is 2.0, the shaping temperature is 125 ℃, the transverse stretching process is that the preheating temperature is 135 ℃, the stretching temperature is 130 ℃, the stretching multiplying power is 5, and the shaping temperature is 140 ℃, so as to form a sheet;
(4) The sheet was cooled at 45 ℃ to obtain a halogen-free flame retardant polyolefin elastomer material.
A single 1kW cable was prepared from this material, and the cable construction and preparation method were the same as in example 1.
Nominal section 1 x 50mm of prepared cable 2 The conductor diameter was 8.9mm and the cable weight 581Kg/Km.
The prepared halogen-free flame-retardant polyolefin elastomer material is resistant to bending for 1500 ten thousand times.
Example 3
The embodiment provides a preparation method of a halogen-free flame retardant polyolefin elastomer material, which comprises the following steps:
(1) According to the mass ratio of 150:1.0:5:200, respectively taking polyolefin resin, a mixed antioxidant, a compatilizer and a flame retardant, then adding the polyolefin resin, the mixed antioxidant, the compatilizer and the flame retardant into a mixer, and uniformly stirring and mixing to prepare a mixture; wherein the polyolefin resin comprises high density polyethylene, linear low density polyethylene, polyolefin plastomer and polyolefin elastomer in a mass ratio of 1:5:8:10; the mixed antioxidant comprises the following components in percentage by mass: 2 antioxidant 1010 and antioxidant 168, wherein the compatilizer is maleic anhydride grafted PE, and the flame retardant is methyl dibutyl phosphate.
(2) Extruding the mixture by an extruder to form a thick sheet, wherein the processing temperature of the extruder is 180 ℃, 220 ℃ and 195 ℃ in sequence.
(3) Sequentially carrying out longitudinal stretching and transverse stretching treatment on the thick sheet, wherein the longitudinal stretching process is that the preheating temperature is 120 ℃, the stretching temperature is 100 ℃, the stretching multiplying power is 3.0, the shaping temperature is 130 ℃, the transverse stretching process is that the preheating temperature is 140 ℃, the stretching temperature is 135 ℃, the stretching multiplying power is 6, and the shaping temperature is 145 ℃ to form a sheet;
(4) The sheet was cooled at 45 ℃ to obtain a halogen-free flame retardant polyolefin elastomer material.
A single 1kW cable was prepared from this material, and the cable construction and preparation method were the same as in example 1.
Nominal section 1 x 50mm of prepared cable 2 The conductor diameter was 8.8mm and the cable weight was 575Kg/Km.
The prepared halogen-free flame-retardant polyolefin elastomer material is resistant to bending 2500 ten thousand times.
Comparative example 1:
this comparative example provides a process for the preparation of a polyolefin elastomer material, which differs from example 1 in that no flame retardant is added, otherwise as in example 1.
A single 1kW cable was prepared from the polyolefin elastomer material prepared in comparative example 1, and the cable construction and preparation method were the same as in example 1.
Nominal section of cable 1 x 50mm 2 The conductor diameter was 8.9mm and the cable weight 581Kg/Km.
The cables prepared in examples 1-3 and comparative example 1 were tested vertically according to EN50264-2008 standard, and the results are shown in table 1.
Table 1 flame retardant test results of the cables prepared in examples 1 to 3 and comparative example 1
The flame retardant property of the cable prepared by taking the halogen-free flame retardant polyolefin elastomer material prepared in the embodiment 1-3 as an insulating layer meets the requirements of EN50264-2008 standard, and the flame retardant property of the cable prepared by the material of the comparative example 1 cannot meet the requirements of EN50264-2008 standard, so that the flame retardant is added to improve the flame retardant property of the polyolefin.
The halogen-free flame retardant polyolefin elastomer material prepared in example 3 has the advantages that the bending resistance times reach 2500 ten thousand times, and the flexibility is better, because the densities of High Density Polyethylene (HDPE), linear Low Density Polyethylene (LLDPE), polyolefin plastomer (POP) and polyolefin elastomer (POE) are sequentially increased from high to low, the content of comonomer alpha-olefin is sequentially increased, the material performance is transited from thermoplastic plastics to thermoplastic elastomers, and the high elasticity is gradually presented, so that the four materials play a synergistic effect, the flexibility of the halogen-free flame retardant polyolefin elastomer material is increased, and the halogen-free flame retardant polyolefin elastomer material can be used for preparing flexible cables.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The above embodiments are only for illustrating the technical solution of the present application, and are not limiting; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application.
Claims (10)
1. The halogen-free flame-retardant polyolefin elastomer material is characterized by comprising the following components in percentage by mass:
80-150 parts of polyolefin resin;
0.5-1.0 part of mixed antioxidant;
4-5 parts of compatilizer;
100-200 parts of flame retardant.
2. The halogen-free flame retardant polyolefin elastomer material according to claim 1, wherein the mixed antioxidant comprises an antioxidant 1010 and an antioxidant 168, and the mass ratio of the antioxidant 1010 to the antioxidant 168 is 1: (1-2).
3. The halogen-free flame retardant polyolefin elastomer material as claimed in claim 1, wherein the polyolefin resin comprises high density polyethylene, low density polyethylene, polyolefin plastomer, polyolefin elastomer, and the mass ratio of the high density polyethylene, low density polyethylene, polyolefin plastomer, polyolefin elastomer is 1 (2-5): 3-8): 4-10.
4. The halogen-free, flame retardant polyolefin elastomer material of claim 1, wherein the low density polyethylene is linear.
5. The halogen-free flame retardant polyolefin elastomer material of claim 1, wherein the compatibilizer is selected from at least one of maleic anhydride grafted PE and maleic anhydride grafted PP.
6. The halogen-free flame retardant polyolefin elastomer material of claim 1, wherein the flame retardant is selected from at least one of triphenyl phosphate, dimethyl ethyl phosphate, methyl dibutyl phosphate, ethyl dipropyl phosphate.
7. A method of preparing a halogen-free flame retardant polyolefin elastomer material according to any of claims 1 to 6, comprising the steps of:
(1) Taking polyolefin resin, a mixed antioxidant, a compatilizer and a flame retardant, and uniformly mixing to obtain a mixture;
(2) Extruding the mixture by an extruder to form a thick sheet, wherein the processing temperature of the extruder is 170-180 ℃, 200-220 ℃ and 185-195 ℃ in sequence.
(3) Sequentially carrying out longitudinal stretching and transverse stretching treatment on the thick sheet to form a sheet;
(4) And cooling the sheet at the temperature of 40-45 ℃ to obtain the halogen-free flame-retardant polyolefin elastomer material.
8. The method of claim 7, wherein the longitudinal stretching process is: the preheating temperature is 110-120 ℃, the stretching temperature is 90-100 ℃, the stretching multiplying power is 1.8-3.0, and the shaping temperature is 120-130 ℃.
9. The method of claim 7, wherein the transverse stretching process is: the preheating temperature is 130-140 ℃, the stretching temperature is 125-135 ℃, the stretching multiplying power is 4-6, and the shaping temperature is 135-145 ℃.
10. Use of a halogen-free flame retardant polyolefin elastomer material according to any of claims 1-6 and/or prepared by the preparation method according to claim 7 for the preparation of a halogen-free flame retardant cable, characterized in that the nominal cross section of the cable is 1 x 50mm 2 The conductor diameter was 8.9mm and the cable weight was 581Kg/Km.
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| CN202310821290.5A CN116731411A (en) | 2023-07-06 | 2023-07-06 | Halogen-free flame-retardant polyolefin elastomer material, and preparation method and application thereof |
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| CN202310821290.5A CN116731411A (en) | 2023-07-06 | 2023-07-06 | Halogen-free flame-retardant polyolefin elastomer material, and preparation method and application thereof |
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