CN113912919A - Environment-friendly anti-cracking silicon-based flame-retardant polyethylene cable material and preparation method thereof - Google Patents
Environment-friendly anti-cracking silicon-based flame-retardant polyethylene cable material and preparation method thereof Download PDFInfo
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- 239000003063 flame retardant Substances 0.000 title claims abstract description 72
- 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 70
- 239000000463 material Substances 0.000 title claims abstract description 57
- -1 polyethylene Polymers 0.000 title claims abstract description 50
- 239000004698 Polyethylene Substances 0.000 title claims abstract description 43
- 229920000573 polyethylene Polymers 0.000 title claims abstract description 41
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title claims abstract description 40
- 229910052710 silicon Inorganic materials 0.000 title claims abstract description 40
- 239000010703 silicon Substances 0.000 title claims abstract description 40
- 238000005336 cracking Methods 0.000 title claims abstract description 32
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 239000002994 raw material Substances 0.000 claims abstract description 26
- 229920001296 polysiloxane Polymers 0.000 claims abstract description 21
- 239000004594 Masterbatch (MB) Substances 0.000 claims abstract description 16
- 229920001179 medium density polyethylene Polymers 0.000 claims abstract description 15
- 239000004701 medium-density polyethylene Substances 0.000 claims abstract description 15
- 239000000203 mixture Substances 0.000 claims abstract description 15
- 239000000314 lubricant Substances 0.000 claims abstract description 14
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 11
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 11
- 239000006229 carbon black Substances 0.000 claims abstract description 11
- 229920001577 copolymer Polymers 0.000 claims abstract description 10
- 229910052901 montmorillonite Inorganic materials 0.000 claims abstract description 9
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000001125 extrusion Methods 0.000 claims abstract description 8
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 claims abstract description 7
- 239000008116 calcium stearate Substances 0.000 claims abstract description 7
- 235000013539 calcium stearate Nutrition 0.000 claims abstract description 7
- IAQRGUVFOMOMEM-UHFFFAOYSA-N butene Natural products CC=CC IAQRGUVFOMOMEM-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000000945 filler Substances 0.000 claims abstract description 6
- UAUDZVJPLUQNMU-UHFFFAOYSA-N Erucasaeureamid Natural products CCCCCCCCC=CCCCCCCCCCCCC(N)=O UAUDZVJPLUQNMU-UHFFFAOYSA-N 0.000 claims abstract description 3
- UAUDZVJPLUQNMU-KTKRTIGZSA-N erucamide Chemical compound CCCCCCCC\C=C/CCCCCCCCCCCC(N)=O UAUDZVJPLUQNMU-KTKRTIGZSA-N 0.000 claims abstract description 3
- FATBGEAMYMYZAF-KTKRTIGZSA-N oleamide Chemical compound CCCCCCCC\C=C/CCCCCCCC(N)=O FATBGEAMYMYZAF-KTKRTIGZSA-N 0.000 claims abstract description 3
- FATBGEAMYMYZAF-UHFFFAOYSA-N oleicacidamide-heptaglycolether Natural products CCCCCCCCC=CCCCCCCCC(N)=O FATBGEAMYMYZAF-UHFFFAOYSA-N 0.000 claims abstract description 3
- 239000004209 oxidized polyethylene wax Substances 0.000 claims abstract description 3
- 235000013873 oxidized polyethylene wax Nutrition 0.000 claims abstract description 3
- 229920002379 silicone rubber Polymers 0.000 claims abstract description 3
- 239000004945 silicone rubber Substances 0.000 claims abstract description 3
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims abstract description 3
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 claims abstract description 3
- 238000002156 mixing Methods 0.000 claims description 18
- 239000002245 particle Substances 0.000 claims description 10
- 229920001862 ultra low molecular weight polyethylene Polymers 0.000 claims description 10
- 239000000155 melt Substances 0.000 claims description 7
- 238000009835 boiling Methods 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 6
- 238000005469 granulation Methods 0.000 claims description 6
- 230000003179 granulation Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 238000005303 weighing Methods 0.000 claims description 6
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 4
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 4
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims description 4
- 239000000347 magnesium hydroxide Substances 0.000 claims description 4
- 229910001862 magnesium hydroxide Inorganic materials 0.000 claims description 4
- 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 3
- 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 3
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 2
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 2
- 239000000843 powder Substances 0.000 description 22
- 239000008187 granular material Substances 0.000 description 18
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 6
- 229910052736 halogen Inorganic materials 0.000 description 5
- 150000002367 halogens Chemical class 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 4
- 230000002195 synergetic effect Effects 0.000 description 4
- 229910000000 metal hydroxide Inorganic materials 0.000 description 2
- 150000004692 metal hydroxides Chemical class 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000003679 aging effect Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 229920001684 low density polyethylene Polymers 0.000 description 1
- 239000004702 low-density polyethylene Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- DXZMANYCMVCPIM-UHFFFAOYSA-L zinc;diethylphosphinate Chemical compound [Zn+2].CCP([O-])(=O)CC.CCP([O-])(=O)CC DXZMANYCMVCPIM-UHFFFAOYSA-L 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
- 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
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
-
- 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
- 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
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- 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
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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
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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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
- 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
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/064—VLDPE
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- Spectroscopy & Molecular Physics (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Insulated Conductors (AREA)
Abstract
The invention discloses an environment-friendly anti-cracking silicon-based flame-retardant polyethylene cable material and a preparation method thereof, wherein the environment-friendly anti-cracking silicon-based flame-retardant polyethylene cable material comprises the following raw material components: 20-45 parts of medium-density polyethylene and ultralow-density polyethylene20-40 parts of ethylene-octene/butene copolymer, 10-20 parts of compatilizer, 5-15 parts of carbon black master batch, 30-60 parts of flame retardant filler, 30-50 parts of silicon flame retardant, 2-5 parts of lubricant and 1-2 parts of antioxidant, wherein the parts are in parts by weight; the silicon flame retardant is nano Si02A mixture of at least two of montmorillonite, activated vinyl silicone rubber, polysiloxane, or organosilicone; the lubricant is a mixture of at least two of EBS, zinc stearate, calcium stearate, polyethylene wax, oxidized polyethylene wax, EVA wax, silicone master batch, erucamide or oleamide. The silicon-based flame-retardant polyethylene cable material has excellent mechanical property and cracking resistance, good flame retardance and electrical property, bright extrusion surface and capability of well ensuring the stability of the cable performance.
Description
Technical Field
The invention relates to an environment-friendly anti-cracking silicon-based flame-retardant polyethylene cable material and a preparation method thereof, belonging to the technical field of polyethylene cable materials.
Background
Polyethylene is one of the most popular plastics in the world at present, and is widely applied to the wire and cable industry. The polyethylene has an oxygen index of only about 18 percent, belongs to flammable materials, and causes immeasurable influence on life safety and property due to a fire caused by cable combustion.
At present, a flame-retardant system of the flame-retardant polyethylene cable material is mainly divided into a halogen system and a halogen-free system, the halogen system has high flame-retardant efficiency, but the material is expensive, and meanwhile, a large amount of smoke is released in the combustion process of the halogen-containing flame retardant, so that the halogen-containing flame retardant has certain corrosivity and toxicity; the halogen-free flame retardant system mainly uses red phosphorus and a metal hydroxide flame retardant, the color of the red phosphorus limits the application of the red phosphorus in natural color or color materials, the red phosphorus is flammable and explosive, the stability of the modified red phosphorus is improved, and a large amount of pungent smell is generated in the combustion process.
Therefore, in the continuous development of research on flame retardant performance of polyethylene cable sheath materials at home and abroad, various flame retardants of different types are developed and applied to flame retardance of polyethylene materials. With the aggravation of environmental pollution and the enhancement of environmental awareness, it is very necessary to develop a polyethylene cable material with flame retardance and environmental protection.
Disclosure of Invention
The invention provides an environment-friendly anti-cracking silicon-based flame-retardant polyethylene cable material and a preparation method thereof, the cable has the advantages of environmental protection, excellent mechanical property and anti-cracking property, good flame retardance and good electrical property, and the extruded surface of the cable material is bright; the preparation method is simple and easy to operate and control, and can well ensure the stability of the cable performance.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
an environment-friendly anti-cracking silicon-based flame-retardant polyethylene cable material comprises the following raw material components: 20-45 parts of medium-density polyethylene, 20-40 parts of ultralow-density polyethylene, 10-20 parts of ethylene-octene/butene copolymer, 5-15 parts of compatilizer, 3-5 parts of carbon black master batch, 30-60 parts of flame retardant filler, 30-50 parts of silicon flame retardant, 2-5 parts of lubricant and 1-2 parts of antioxidant, wherein the parts are parts by weight; the silicon flame retardant is nano Si02A mixture of at least two of montmorillonite, activated vinyl silicone rubber, polysiloxane, or organosilicone; the lubricant is a mixture of at least two of EBS, zinc stearate, calcium stearate, polyethylene wax, oxidized polyethylene wax, EVA wax, silicone master batch, erucamide or oleamide.
The high melting point of the medium-density polyethylene ensures that the material has good heat-resistant deformation performance; the ultra-low density polyethylene has more excellent mechanical property and cracking resistance compared with the common low density polyethylene; the ethylene-octene/butene copolymer can ensure that the material still has higher elongation at break after a large amount of flame retardant is added; the silicon flame retardant has higher flame retardant efficiency than the traditional metal hydroxide flame retardant system, can meet the flame retardant performance with less addition amount, and has less influence on the mechanical property and other properties of the material; compared with a red phosphorus flame-retardant system and a halogen system, the silicon flame-retardant system has less combustion smoke and is more environment-friendly.
The environment-friendly anti-cracking silicon-based flame-retardant polyethylene cable material disclosed by the invention has the advantages that the silicon-based flame retardant, the flame-retardant filler and other raw material components with specific compositions are synergistically promoted, so that the product has excellent mechanical properties and anti-cracking properties, good flame retardance and good electrical properties, and the extruded surface of the cable material is bright.
In order to improve the flame retardant property of the material and give consideration to environmental protection and flame retardant property, the silicon-based flame retardant is polysiloxane or a mixture of montmorillonite and organosilicone in a mass ratio of 1 (2-3), and compared with montmorillonite, the polysiloxane obviously improves the melt index of the material, improves the mechanical property to a certain extent, but slightly reduces the flame retardant property.
In order to further promote the synergistic cooperation among the components and improve the extrusion processability of the material, the lubricant is a mixture of polyethylene wax and silicone master batch in a mass ratio of 1 (0.8-1.2), or the lubricant is a mixture of EBS and calcium stearate in a mass ratio of 1 (0.8-1.2).
In order to reduce the cost and not influence the mechanical property of the product, the preferable proportion of the compatilizer is 5-6 parts; the mechanical property is improved, and the medium density polyethylene accounts for 35-40 parts.
In order to ensure the thermal deformation performance of the material and improve the high-temperature pressure resistance of the finished cable sheath, preferably, the density of the medium-density polyethylene is 0.935 to 0.942g/cm3The melt index is 0.5-1 g/10min (190 ℃/2.16 kg).
In order to promote the synergistic cooperation among the components and improve the mechanical property and the processing property of the product, the preferred ultra-low density polyethylene has the density of 0.886-0.910 g/cm3The melt index is 0.8-4 g/10min (190 ℃/2.16 kg).
In order to further improve the mechanical property of the material and reduce the influence of the filling powder on the property, the ethylene-octene/butene copolymer is preferably selected, and the melt index is 3-6 g/10min (190 ℃/2.16 kg).
In order to further promote the compatibility among the components and improve the synergistic effect among the components, the compatilizer is preferably at least one of PE-g-MAH, POE-g-MAH or EVA-g-MAH, the melt index of the compatilizer is 0.6-2 g/10min (190 ℃/2.16kg), and the grafting ratio is 0.5% -1.5%.
In order to improve the compatibility among materials, the carbon black master batch takes PE as a carrier, and the content of carbon black is 50%;
in order to further improve the flame retardant property of the material, the flame retardant filler is at least one of aluminum hydroxide, magnesium hydroxide, nano calcium carbonate or talcum powder.
In order to further promote the synergistic cooperation of the components and give consideration to the mechanical property and the aging property of the product, the antioxidant is at least one of antioxidant 1010, antioxidant 168 or antioxidant 300#, preferably, the antioxidant is a mixture of the antioxidant 1010 and the antioxidant 168 in a mass ratio of 1 (0.8-1.2).
The preparation method of the environment-friendly anti-cracking silicon-based flame-retardant polyethylene cable material comprises the following steps:
1) weighing various raw materials according to the mass part ratio;
2) respectively putting the raw materials into an internal mixer, wherein the internal mixing temperature is 165 +/-5 ℃, the internal mixing time is 10-15 min, and the discharging temperature is controlled to be 165-170 ℃; carrying out double-cone feeding after banburying: the temperature is 100 ℃ and 110 ℃; and (3) double-screw mixing: the temperature is 95-120 ℃, and the rotating speed of a screw is 80-100 rpm; single screw extrusion and granulation: the temperature is 100-135 ℃, and the rotating speed of a screw is 20-35 rpm; drying and cooling by hot air in a boiling chamber to obtain the material particles.
The prior art is referred to in the art for techniques not mentioned in the present invention.
The environment-friendly anti-cracking silicon-based flame-retardant polyethylene cable material disclosed by the invention has excellent mechanical properties and anti-cracking properties, good flame retardance and good electrical properties, and the extruded surface of the cable material is bright; the raw materials are few in variety, simple in components and low in cost; the preparation method is simple and easy to operate and control, and can well ensure the stability of the cable performance.
Detailed Description
In order to better understand the present invention, the following examples are further provided to illustrate the present invention, but the present invention is not limited to the following examples.
Example 1
The environment-friendly anti-cracking silicon-based flame-retardant polyethylene cable material comprises the following raw material components: 30 parts of medium density polyethylene (Exxon 3505, granules), 40 parts of ultra-low density polyethylene (Sabic 8402, granules), 20 parts of ethylene-butylene copolymer (LG 385, granules), 10 parts of compatilizer (Ningbo energy light MC226), 4 parts of carbon black master batch (Kabot 6269, granules), 50 parts of aluminum hydroxide (Yabao 104LEO), 10 parts of silicon flame retardant nano montmorillonite (Zhejiang Fenghong, powder), 30 parts of organic silicone flame retardant (Japanese Xinyue FRX-100, powder), 1.5 parts of lubricant EBS (Changzhou Saikesucceed 2002, powder), 1.5 parts of calcium stearate (hair base chemical, powder), 1: 168 parts of antioxidant (1010: 168, mass ratio of powder is 1: 1, and 1.5 parts of powder), wherein the parts are parts by weight.
The environment-friendly anti-cracking silicon-based flame-retardant polyethylene cable material is prepared from the following raw material components according to the formula by the following method:
1) weighing various raw materials according to the mass part ratio;
2) respectively putting the raw materials into an internal mixer, wherein the internal mixing temperature is 165 ℃, the internal mixing time is 15min, and the discharging temperature is controlled at 165 ℃; carrying out double-cone feeding after banburying: the temperature is 100 ℃; and (3) double-screw mixing: the temperature of each zone is 95 ℃, 100 ℃, 105 ℃, 110 ℃ and the screw rotation speed is 80rpm in sequence; single screw extrusion and granulation: the temperature of each zone is 100 ℃, 110 ℃, 130 ℃, 135 ℃ and 135 ℃ in sequence, and the rotating speed of a screw is 30 rpm; and drying and cooling by hot air in a boiling chamber to obtain material particles (the thickness of the particles is controlled to be 2-4 mm).
Example 2
The raw material components are as follows: 40 parts of medium-density polyethylene (Exxon 3505, granules), 30 parts of ultra-low-density polyethylene (Sabic 8402, granules), 20 parts of ethylene-butylene copolymer (LG 385, granules), 10 parts of compatilizer (Ningbo energy light MC226), 4 parts of carbon black master batch (Kabet 6269, granules), 50 parts of aluminum hydroxide (Yabao 104LEO), 10 parts of silicon flame retardant nano montmorillonite (Zhejiang Fenghong, powder), 30 parts of organic silicone flame retardant (Japanese Xinyue FRX-100, powder), 1.5 parts of lubricant EBS (Changzhou Saikesucceed 2002, powder), 1.5 parts of calcium stearate (hair base chemical, powder), 1: 168 parts of antioxidant (powder: 1: 168, mass ratio of 1: 1, and 1.5 parts of powder), wherein the parts are parts by weight.
In the embodiment, compared with the embodiment 1, the tensile strength, the cracking resistance and the thermal deformation resistance of the raw material are obviously improved by increasing the parts of the medium-density polyethylene in the formula, and the flame retardant property is not greatly changed.
The environment-friendly anti-cracking silicon-based flame-retardant polyethylene cable material is prepared from the following raw material components according to the formula by the following method:
1) weighing various raw materials according to the mass part ratio;
2) respectively putting the raw materials into an internal mixer, wherein the internal mixing temperature is 165 ℃, the internal mixing time is 15min, and the discharging temperature is controlled at 165 ℃; carrying out double-cone feeding after banburying: the temperature is 100 ℃; and (3) double-screw mixing: the temperature of each zone is 95 ℃, 100 ℃, 105 ℃, 110 ℃ and the screw rotation speed is 80rpm in sequence; single screw extrusion and granulation: the temperature of each zone is 100 ℃, 110 ℃, 130 ℃, 135 ℃ and 135 ℃ in sequence, and the rotating speed of a screw is 30 rpm; and drying and cooling by hot air in a boiling chamber to obtain material particles (the thickness of the particles is controlled to be 2-4 mm).
Example 3
The raw material components are as follows: 40 parts of medium-density polyethylene (Exxon 4009, granules), 30 parts of ultralow-density polyethylene (Sabic 8402, granules), 20 parts of ethylene-butylene copolymer (LG 385, granules), 10 parts of compatilizer (Nippon energy light MC226), 4 parts of carbon black master batch (Kabot 6269, granules), 50 parts of magnesium hydroxide (Yabao H5), 10 parts of polysiloxane (Dow Corning 7081, powder), 30 parts of organic silicone flame retardant (Japanese Xinyue FRX-100, powder), 1.5 parts of lubricant polyethylene wax (Changzhou successful match 2420, powder), 1.5 parts of silicone master batch (KajK-A01, granules), 1.5 parts of antioxidant (1010: 168, mass ratio of 1: 1, powder) and the parts are parts by weight.
In this embodiment, compared with example 2, the medium density polyethylene is replaced with 4009 having a larger melt finger, the melt finger of the material is enlarged, the processability is improved to a certain extent, and the polysiloxane powder flame retardant is used to replace the nano-montmorillonite, so that the melt finger of the material is also improved significantly, the mechanical properties are improved to a certain extent, and the flame retardant property is slightly reduced.
The environment-friendly anti-cracking silicon-based flame-retardant polyethylene cable material is prepared from the following raw material components according to the formula by the following method:
1) weighing various raw materials according to the mass part ratio;
2) respectively putting the raw materials into an internal mixer, wherein the internal mixing temperature is 165 ℃, the internal mixing time is 15min, and the discharging temperature is controlled at 165 ℃; carrying out double-cone feeding after banburying: the temperature is 100 ℃; and (3) double-screw mixing: the temperature of each zone is 95 ℃, 100 ℃, 105 ℃, 110 ℃ and the screw rotation speed is 80rpm in sequence; single screw extrusion and granulation: the temperature of each zone is 100 ℃, 110 ℃, 130 ℃, 135 ℃ and 135 ℃ in sequence, and the rotating speed of a screw is 30 rpm; and drying and cooling by hot air in a boiling chamber to obtain material particles (the thickness of the particles is controlled to be 2-4 mm).
Example 4
The raw material components are as follows: 45 parts of medium-density polyethylene (Exxon 4009, granules), 35 parts of ultralow-density polyethylene (Sabic 8402, granules), 15 parts of ethylene-butylene copolymer (LG 385, granules), 5 parts of compatilizer (Nippon energy light MC509), 4 parts of carbon black master batch (Kabot 6269, granules), 50 parts of magnesium hydroxide (Yabao H5), 10 parts of polysiloxane (Dow Corning 7081, powder), 30 parts of organic silicone flame retardant (Japanese Xinyue FRX-100, powder), 1.5 parts of lubricant polyethylene wax (Changzhou successful Sai 2420, powder), 1.5 parts of silicone master batch (KajJ-A01, granules), 1.5 parts of antioxidant (1010: 168, mass ratio of 1: 1, powder) and the parts are parts by weight.
In this embodiment, compared with example 3, the addition amount of the medium density polyethylene and the ultra-low density polyethylene is properly increased, the addition amount of the compatibilizer is reduced, the mechanical properties of the material are not changed greatly, the processing fluidity is improved to a certain extent, and the flame retardant property is also improved to a certain extent.
The environment-friendly anti-cracking silicon-based flame-retardant polyethylene cable material is prepared from the following raw material components according to the formula by the following method:
1) weighing various raw materials according to the mass part ratio;
2) respectively putting the raw materials into an internal mixer, wherein the internal mixing temperature is 165 ℃, the internal mixing time is 15min, and the discharging temperature is controlled at 165 ℃; carrying out double-cone feeding after banburying: the temperature is 100 ℃; and (3) double-screw mixing: the temperature of each zone is 95 ℃, 100 ℃, 105 ℃, 110 ℃ and the screw rotation speed is 80rpm in sequence; single screw extrusion and granulation: the temperature of each zone is 100 ℃, 110 ℃, 130 ℃, 135 ℃ and 135 ℃ in sequence, and the rotating speed of a screw is 30 rpm; and drying and cooling by hot air in a boiling chamber to obtain material particles (the thickness of the particles is controlled to be 2-4 mm).
Table 1 shows the properties of the environment-friendly anti-cracking silicon-based flame-retardant polyethylene cable material obtained in each example
Claims (10)
1. An environment-friendly anti-cracking silicon-based flame-retardant polyethylene cable material is characterized in that: the raw material components comprise: 20-45 parts of medium-density polyethylene, 20-40 parts of ultralow-density polyethylene, 10-20 parts of ethylene-octene/butene copolymer, 5-15 parts of compatilizer, 3-5 parts of carbon black master batch, 30-60 parts of flame retardant filler, 30-50 parts of silicon flame retardant, 2-5 parts of lubricant and 1-2 parts of antioxidant, wherein the parts are parts by weight; the silicon flame retardant is nano Si02A mixture of at least two of montmorillonite, activated vinyl silicone rubber, polysiloxane, or organosilicone; the lubricant is a mixture of at least two of EBS, zinc stearate, calcium stearate, polyethylene wax, oxidized polyethylene wax, EVA wax, silicone master batch, erucamide or oleamide.
2. The environment-friendly anti-cracking silicon-based flame-retardant polyethylene cable material according to claim 1, characterized in that: the silicon flame retardant is a mixture of polysiloxane or montmorillonite and organic silicone in a mass ratio of 1 (2-3); the lubricant is a mixture of polyethylene wax and silicone master batch in a mass ratio of 1 (0.8-1.2), or the lubricant is a mixture of EBS and calcium stearate in a mass ratio of 1 (0.8-1.2).
3. The environment-friendly anti-cracking silicon-based flame-retardant polyethylene cable material according to claim 1 or 2, characterized in that: 5-6 parts of a compatilizer; 35-40 parts of medium-density polyethylene.
4. The environment-friendly anti-cracking silicon-based flame-retardant polyethylene cable material according to claim 1 or 2, characterized in that: the density of the medium density polyethylene is 0.935 to 0.942g/cm3The melt index is 0.5-1 g/10min (190 ℃/2.16 kg).
5. The environment-friendly anti-cracking silicon-based flame-retardant polyethylene cable material according to claim 1 or 2, characterized in that: in the ultra-low density polyethylene, the density is 0.886-0.910 g/cm3The melt index is 0.8-4 g/10min (190 ℃/2.16 kg).
6. The environment-friendly anti-cracking silicon-based flame-retardant polyethylene cable material according to claim 1 or 2, characterized in that: the ethylene-octene/butene copolymer has a melt index of 3-6 g/10min (190 ℃/2.16 kg).
7. The environment-friendly anti-cracking silicon-based flame-retardant polyethylene cable material according to claim 1 or 2, characterized in that: the compatilizer is at least one of PE-g-MAH, POE-g-MAH or EVA-g-MAH, the melt index of the compatilizer is 0.6-2 g/10min (190 ℃/2.16kg), and the grafting rate is 0.5% -1.5%.
8. The environment-friendly anti-cracking silicon-based flame-retardant polyethylene cable material according to claim 1 or 2, characterized in that: the carbon black master batch takes PE as a carrier, and the carbon black content is 50%; the flame-retardant filler is at least one of aluminum hydroxide, magnesium hydroxide, nano calcium carbonate or talcum powder.
9. The environment-friendly anti-cracking silicon-based flame-retardant polyethylene cable material according to claim 1 or 2, characterized in that: the antioxidant is a mixture of the antioxidant 1010 and the antioxidant 168 with the mass ratio of 1 (0.8-1.2).
10. The preparation method of the environment-friendly anti-cracking silicon-based flame-retardant polyethylene cable material of any one of claims 1 to 9, which is characterized by comprising the following steps: the method comprises the following steps:
1) weighing various raw materials according to the mass part ratio;
2) respectively putting the raw materials into an internal mixer, wherein the internal mixing temperature is 165 +/-5 ℃, the internal mixing time is 10-15 min, and the discharging temperature is controlled at 165-175 ℃; carrying out double-cone feeding after banburying: the temperature is 100 ℃ and 110 ℃; and (3) double-screw mixing: the temperature is 95-120 ℃, and the rotating speed of a screw is 80-100 rpm; single screw extrusion and granulation: the temperature is 100-135 ℃, and the rotating speed of a screw is 20-35 rpm; drying and cooling by hot air in a boiling chamber to obtain the material particles.
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