CN102153812A - Polyolefine sheathing compound for coaxial cable and preparation method thereof - Google Patents
Polyolefine sheathing compound for coaxial cable and preparation method thereof Download PDFInfo
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- CN102153812A CN102153812A CN2010106049333A CN201010604933A CN102153812A CN 102153812 A CN102153812 A CN 102153812A CN 2010106049333 A CN2010106049333 A CN 2010106049333A CN 201010604933 A CN201010604933 A CN 201010604933A CN 102153812 A CN102153812 A CN 102153812A
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- 229920000098 polyolefin Polymers 0.000 title claims abstract description 28
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 150000001875 compounds Chemical class 0.000 title abstract 4
- 239000000463 material Substances 0.000 claims abstract description 29
- 239000003063 flame retardant Substances 0.000 claims abstract description 22
- 229920001903 high density polyethylene Polymers 0.000 claims abstract description 19
- 239000004700 high-density polyethylene Substances 0.000 claims abstract description 19
- 239000006057 Non-nutritive feed additive Substances 0.000 claims abstract description 7
- 229920005672 polyolefin resin Polymers 0.000 claims abstract description 7
- 150000001282 organosilanes Chemical class 0.000 claims abstract description 6
- 238000003756 stirring Methods 0.000 claims abstract description 6
- 238000001035 drying Methods 0.000 claims abstract description 4
- 238000002156 mixing Methods 0.000 claims abstract description 4
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 3
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 16
- 239000003112 inhibitor Substances 0.000 claims description 14
- 230000003647 oxidation Effects 0.000 claims description 14
- 238000007254 oxidation reaction Methods 0.000 claims description 14
- 239000000203 mixture Substances 0.000 claims description 8
- -1 pentaerythritol ester Chemical class 0.000 claims description 8
- 238000005469 granulation Methods 0.000 claims description 5
- 230000003179 granulation Effects 0.000 claims description 5
- 229920001897 terpolymer Polymers 0.000 claims description 5
- FKRCODPIKNYEAC-UHFFFAOYSA-N ethyl propionate Chemical compound CCOC(=O)CC FKRCODPIKNYEAC-UHFFFAOYSA-N 0.000 claims description 4
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 4
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 3
- 229910021502 aluminium hydroxide Inorganic materials 0.000 claims description 3
- OJOWICOBYCXEKR-KRXBUXKQSA-N (5e)-5-ethylidenebicyclo[2.2.1]hept-2-ene Chemical compound C1C2C(=C/C)/CC1C=C2 OJOWICOBYCXEKR-KRXBUXKQSA-N 0.000 claims description 2
- DMWVYCCGCQPJEA-UHFFFAOYSA-N 2,5-bis(tert-butylperoxy)-2,5-dimethylhexane Chemical compound CC(C)(C)OOC(C)(C)CCC(C)(C)OOC(C)(C)C DMWVYCCGCQPJEA-UHFFFAOYSA-N 0.000 claims description 2
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical group C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 claims description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 2
- 241001441571 Hiodontidae Species 0.000 claims description 2
- 239000004698 Polyethylene Substances 0.000 claims description 2
- HDRTWMBOUSPQON-ODZAUARKSA-L calcium;(z)-but-2-enedioate Chemical compound [Ca+2].[O-]C(=O)\C=C/C([O-])=O HDRTWMBOUSPQON-ODZAUARKSA-L 0.000 claims description 2
- 229920000092 linear low density polyethylene Polymers 0.000 claims description 2
- 239000004707 linear low-density polyethylene Substances 0.000 claims description 2
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 claims description 2
- 229920000573 polyethylene Polymers 0.000 claims description 2
- 229920001296 polysiloxane Polymers 0.000 claims description 2
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 claims description 2
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 claims description 2
- 150000007970 thio esters Chemical class 0.000 claims description 2
- 239000000779 smoke Substances 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000004132 cross linking Methods 0.000 abstract description 5
- 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 abstract description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052793 cadmium Inorganic materials 0.000 abstract description 2
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 abstract description 2
- 230000006378 damage Effects 0.000 abstract description 2
- 229910052736 halogen Inorganic materials 0.000 abstract description 2
- 150000002367 halogens Chemical class 0.000 abstract description 2
- 229910001385 heavy metal Inorganic materials 0.000 abstract description 2
- 231100000053 low toxicity Toxicity 0.000 abstract description 2
- 229910052698 phosphorus Inorganic materials 0.000 abstract description 2
- 239000011574 phosphorus Substances 0.000 abstract description 2
- 229920002943 EPDM rubber Polymers 0.000 abstract 1
- 239000003431 cross linking reagent Substances 0.000 abstract 1
- 230000007613 environmental effect Effects 0.000 abstract 1
- 239000003607 modifier Substances 0.000 abstract 1
- 238000005453 pelletization Methods 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 11
- 230000000704 physical effect Effects 0.000 description 5
- DXZMANYCMVCPIM-UHFFFAOYSA-L zinc;diethylphosphinate Chemical compound [Zn+2].CCP([O-])(=O)CC.CCP([O-])(=O)CC DXZMANYCMVCPIM-UHFFFAOYSA-L 0.000 description 5
- 230000032683 aging Effects 0.000 description 4
- 239000000314 lubricant Substances 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 239000006096 absorbing agent Substances 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- 239000004416 thermosoftening plastic Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 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 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical group [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical class [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 235000012254 magnesium hydroxide Nutrition 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Insulated Conductors (AREA)
- Organic Insulating Materials (AREA)
Abstract
The invention discloses a polyolefine sheathing compound for a coaxial cable and a preparation method thereof. The sheathing compound consists of the following components in parts by weight: 60-90 parts of ethylene-propylene-diene rubber, 5-25 parts of high-density polyethylene, 5-15 parts of functional polyolefin resin, 180-200 parts of flame retardant, 1-3 parts of surface modifier, 0.01-0.05 part of crosslinking agent, 0.5-2 parts of antioxidant and 1.5-9 parts of processing aid. The preparation method comprises the following steps of: putting the flame retardant into a high-speed stirrer for stirring at a high speed at the temperature of not lower than 80 DEG C; adding organosilane and stirring for 3-5 minutes; putting the remaining materials into the high-speed stirrer for continually stirring for 3-5 minutes; adding into a double-screw mixing extruder set by using a feeder for pelletizing; and drying. The sheathing compound has the advantages of flame retardance, low smoke, freeness from halogen, low toxicity, freeness from harmful heavy metals such as lead, cadmium and the like, freeness from phosphorus, difficulty in burning and small smog harm in case of fire, environmental friendliness, high temperature resistance level of 105 DEG C, high extruding performance, excellent electric performance, no need of subsequent crosslinking after stranding, saving in a large amount of manpower and materials and great reduction in the manufacturing period of the cable.
Description
Technical field
The present invention relates to a kind of concentric cable polyolefin plastics, relate in particular to 105 ℃ of low-smoke and halogen-free flame retardant polyolefin jacket materials of a kind of thermoplasticity, the present invention also provides the preparation method of a kind of concentric cable with polyolefin jacket material.
Background technology
Concentric cable is owing to its special structural performance, and it is little to make it possess radiation loss, is subjected to external interference to influence little characteristics, is widely used in the transmission of numerary signal and simulating signal.Because its harsh requirement to performance, therefore also higher to the requirement of plastics jacket, as high-temperature resistant grade, permanent work-ing life, excellent electric and physicals, the cable of indoor use also needs to possess flame retardant rating, and the requirement trend that satisfies halide-free smokeless is more arranged at present.Though conventional pvc sheath physicals excellence, but electric property is general, and can't satisfy the requirement of LSOH anti-flaming, and the low-smoke and halogen-free flame retardant polyolefin jacket non-refractory, physicals is relatively poor, all adopts thermoset to handle eliminating above defective usually, but needs behind its stranding the whole piece cable is carried out electron beam to irradiate crosslinked in electronics acceleration machine, therefore manufacturing cost is big, and production efficiency is low.
Chinese patent 02111063.8 discloses a kind of low-smoke halogen-free flame-retardant polyolefin cable line, its composition comprises: (1) ethylene-vinyl acetate polymkeric substance, (2) high density polyethylene(HDPE), (3) fire retardant A, (4) fire retardant B, (5) compatilizer, (6) oxidation inhibitor A, (7) oxidation inhibitor B, (8) lubricant, (9) linking agent.Its advantage is that it is few to produce smog, and corrodibility and toxicity are lower, but its fire retardant is phosphorous, and its electric property is not good.
Chinese patent 200910051916.9 discloses a kind of solar cables irradiation crosslinking halogen-free flame retardant insulation material, comprise following component: (1) base resin, (2) functional polyolefin resin, (3) fire retardant, (4) surface-modifying agent, the hard ester acid of (5) one-level, (6) oxidation inhibitor, (7) UV light absorber, (8) anti copper agent, (9) lubricant (10) crosslinking sensitizer.Its advantage is, extrudes good processability, excellent electrical properties, but its ageing resistance is not good, embrittlement distortion easily in the use, thus influence is used.
Summary of the invention
The objective of the invention is to overcome the deficiency that existing thermoset low-smoke and halogen-free flame retardant polyolefin jacket exists, a kind of cross-linking radiation of exempting from is provided, promptly satisfies at the concentric cable of 105 ℃ of following long term operations, long service life, LSOH anti-flaming, good electric property and physicals with 105 ℃ of low-smoke and halogen-free flame retardant polyolefin jacket materials of thermoplasticity with the thermoplastics sheath.
Another object of the present invention is to provide the preparation method that a kind of flow process is simple, continuous, production efficiency is high, the concentric cable of constant product quality is used the thermoplastic low-smoke halide-free fireproof composite polyolefine sheath material.
To achieve these goals, the present invention adopts following technical scheme:
Concentric cable TPO sheath material, form by following component by weight:
Terpolymer EP rubber 60-90
High density polyethylene(HDPE) 5-25
Functional polyolefin resin 5-15
Fire retardant 180-200
Surface-modifying agent 1-3
Linking agent 0.01-0.05
Oxidation inhibitor 0.5-2
Processing aid 1.5-9
Described terpolymer EP rubber is the multipolymer of ethylene-propylene-ethylidene norbornene.125 ℃ of mooney viscosities of the multipolymer of this ethylene-propylene-ethylidene norbornene are 20-50, are made up of the ethene of 50-80% weight, the propylene of 15-45% weight, the ethylidene norbornene multipolymer of 0.5-5% weight.
The molten finger of described high density polyethylene(HDPE) is 6-10g/10min.
Described functional polyolefin resin is that maleic anhydride graft linear low density polyethylene, maleic anhydride graft high density polyethylene(HDPE) or calcium maleate graft polyolefin are elastomeric a kind of.
Preferably, described ignition dope is an aluminium hydroxide.
Preferably, described surface-modifying agent is an organosilane.
Described linking agent is dicumyl peroxide or 2,5-dimethyl-2,5-bis(t-butylperoxy) hexane.
Described oxidation inhibitor is four [methyl-β-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic ester] mixture of pentaerythritol ester and phosphite antioxidant, or the mixture of four [methyl-β-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic ester] pentaerythritol ester and thioesters oxidation inhibitor.
Preferably, described oxidation inhibitor is the Irganox1010 of Switzerland vapour Bagong department manufacturing and the mixture of Irganox168.
Described processing aid is the mixture of high molecular weight silicone and polyethylene wax.
Among the present invention, the concentric cable preparation method of TPO sheath material, comprise the steps: that fire retardant is placed on the homogenizer high speed to be stirred to temperature and to be not less than 80 ℃, stirred 3-5 minute after adding organosilane, leftover materials are dropped in the homogenizer continue to stir 3-5 minute, add twin-screw mixer with feeder and extrude unit granulation, after drying.
Preferably, above-mentioned high-speed mixer usage level formula paddle, mixing machine working current 60-130A.
Preferably, four temperature provinces of employed twin-screw mixer forcing machine are: 130 ℃ of feeding sections, 140 ℃ of mixing sections, 145 ℃ of granulation sections, 150 ℃ of heads.
Concentric cable of the present invention TPO sheath material and preparation method thereof, its advantage is, nonflammable and smog injury is little when harmful heavy metals such as fire-retardant, low cigarette, Halogen, low toxicity, not leaded, cadmium, without phosphorus, presence of fire, can not work the mischief to environment, it possesses 105 ℃ of high-temperature resistant grades simultaneously, and extrusion performance is good, the electric property excellence, do not need the later stage crosslinked behind the stranding, save a large amount of human and material resources, greatly shorten the manufacturing cycle of cable.
Embodiment
It is described that each component concentration among the embodiment is pressed table 1.
Embodiment 1
Component is pressed shown in the table 1, the preparation method comprises the steps: that fire retardant is placed on the homogenizer high speed to be stirred to temperature and to be not less than 80 ℃, stirred 3-5 minute after adding organosilane, leftover materials are dropped in the homogenizer continue to stir 3-5 minute, add twin-screw mixer with feeder and extrude unit granulation, after drying.
Embodiment 2
Component is pressed table 1, and the preparation method is with embodiment one.
Embodiment 3
Component is pressed table 1, and the preparation method is with embodiment one.
Embodiment 4
Component is pressed table 1, and the preparation method is with embodiment one.
Comparative Examples all adopts prior art, and its component is as described in Table 1.
Comparative Examples 1
EVA75 part, HDPE25 part, 50 parts in aluminium hydroxide, 65 parts of magnesium hydroxides, grafting EVA10 part, ZnB1.5 part, 1.5 parts in oxidation inhibitor, 3.5 parts of lubricants, 7.5 parts of linking agents.
Comparative Examples 2
50 parts of extrusion resins, 10 parts of functional polyolefin resins, 80 parts of fire retardants, 1 part of surface-modifying agent, 1 part in oxidation inhibitor, 0.1 part of UV light absorber, 1 part of lubricant, 2 parts of crosslinking sensitizers.
Comparative Examples 3
80 parts of extrusion resins, 10 parts of high density polyethylene(HDPE)s, 40 parts of fire retardants, 3 parts of surface-modifying agents, 5 parts in oxidation inhibitor, 5 parts of processing aids.
The set of dispense ratio of table 1 polyolefin jacket material
| Prescription (by weight) | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Comparative Examples 1 | Comparative Examples 2 | Comparative Examples 3 |
| Terpolymer EP rubber | 60 | 90 | 60 | 90 | 75 | 50 | 80 |
| High density polyethylene(HDPE) | 25 | 5 | 25 | 5 | 25 | - | 10 |
| Functional polyolefin | 15 | 5 | 25 | 5 | - | 10 | - |
| Fire retardant | 180 | 180 | 200 | 200 | 115 | 80 | 40 |
| Surface-modifying agent | 2 | 2 | 3 | 2.5 | 10 | 1 | 3 |
| Linking agent | 0.02 | 0.03 | 0.02 | 0.03 | 7.5 | 2 | 0.1 |
| Oxidation inhibitor | 2 | 2 | 2.5 | 2.5 | 1.5 | 1 | 5 |
| Processing aid | 6 | 6 | 8 | 8 | 3.5 | 1 | 5 |
The physicals of table 2 polyolefin jacket material
| Mechanical property | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Comparative Examples 1 | Comparative Examples 2 | Comparative Examples 3 |
| Tensile strength (MPa) | 9.0 | 13.8 | 11.7 | 12.7 | 11.3 | 12.9 | 10.2 |
| Elongation at break (%) | 150 | 189 | 236 | 211 | 187 | 162 | 128 |
| Hot air aging | ? | ? | ? | ? | ? | ? | ? |
| Tensile strength velocity of variation (%) | 15 | 11 | 18 | 14 | -1 | 12 | 10 |
| Extension at break velocity of variation (%) | -12 | -9 | -22 | -19 | -18 | -10 | -12 |
| Apparatus for Pressure at high-temp | ? | ? | ? | ? | ? | ? | ? |
| Depth of indentation (%) | 37 | 41 | 43 | 40 | 34 | 34 | 36 |
| Oxygen index (%) | 32 | 32 | 35 | 34 | 33 | ? | ? |
| 20 ℃ of volume specific resistances (Ω m) | 2.5×10 13 | 2.5×10 13 | 7.8×10 13 | 5.9×10 13 | 9×10 12 | 5×10 12 | 7.4×10 12 |
| Dielectric strength MV/m | 24.7 | 25.3 | 24.8 | 25.0 | 33 | ? | ? |
| -20 ℃ of low-temperature impact embrittlement | By | By | By | By | By | By | Do not pass through |
Detect with the product for preparing in embodiment and the Comparative Examples, shown in the performance index table 2.Hot air aging is (136 ± 2) ℃ * 168 hours, and Apparatus for Pressure at high-temp is 105 ℃ * 4 hours, and index item is the standard value that national regulation should reach, and the representative value item is the performance of embodiment sample test.
Show according to measurement result, polyolefin jacket material of the present invention has good tensile and elongation at break, its ageing resistance is good and have a good electric property, with respect to Chinese patent 02111063.8, the Insulation Material of Chinese patent 200910051916.9 or sheath material, it all has clear improvement on performances such as mechanics, electricity.
Above embodiment only is used for that the present invention will be described, does not constitute the restriction to the claim scope, and other alternative means that it may occur to persons skilled in the art that are all in claim scope of the present invention.
Claims (11)
1. concentric cable polyolefin jacket material is characterized in that component comprises by weight:
Terpolymer EP rubber 60-90
High density polyethylene(HDPE) 5-25
Functional polyolefin resin 5-15
Fire retardant 180-200
Surface-modifying agent 1-3
Linking agent 0.01-0.05
Oxidation inhibitor 0.5-2
Processing aid 1.5-9.
2. concentric cable polyolefin jacket material according to claim 1, it is characterized in that, 125 ℃ of mooney viscosities of described terpolymer EP rubber are 20-50, are made up of the ethene of 50-80% weight, the propylene of 15-45% weight, the ethylidene norbornene multipolymer of 0.5-5% weight.
3. concentric cable polyolefin jacket material according to claim 1 is characterized in that, the molten finger of described high density polyethylene(HDPE) is 6-10g/10min.
4. concentric cable polyolefin jacket material according to claim 1, it is characterized in that described functional polyolefin resin is that maleic anhydride graft linear low density polyethylene, maleic anhydride graft high density polyethylene(HDPE) or calcium maleate graft polyolefin are elastomeric a kind of.
5. concentric cable polyolefin jacket material according to claim 1 is characterized in that, described ignition dope is an aluminium hydroxide.
6. concentric cable polyolefin jacket material according to claim 1 is characterized in that, described surface-modifying agent is an organosilane.
7. concentric cable polyolefin jacket material according to claim 1 is characterized in that, described linking agent is dicumyl peroxide or 2,5-dimethyl-2,5-bis(t-butylperoxy) hexane.
8. concentric cable polyolefin jacket material according to claim 1, it is characterized in that, described oxidation inhibitor is four [methyl-β-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic ester] mixture of pentaerythritol ester and phosphite antioxidant, or the mixture of four [methyl-β-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic ester] pentaerythritol ester and thioesters oxidation inhibitor.
9. concentric cable polyolefin jacket material according to claim 1 is characterized in that, described processing aid is the mixture of high molecular weight silicone and polyethylene wax.
10. a concentric cable is with the preparation method of polyolefin jacket material, it is characterized in that comprising the steps: that fire retardant is placed on the homogenizer high speed to be stirred to temperature and to be not less than 80 ℃, stirred 3-5 minute after adding organosilane, leftover materials are dropped in the homogenizer continue to stir 3-5 minute, add twin-screw mixer with feeder and extrude unit granulation, after drying.
11., it is characterized in that four temperature provinces of described twin screw extruder are: 130 ℃ of feeding sections, 140 ℃ of mixing sections, 145 ℃ of granulation sections, 150 ℃ of heads according to the preparation method of the described concentric cable of claim 10 with polyolefin jacket material.
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| CN2010106049333A CN102153812B (en) | 2010-12-25 | 2010-12-25 | Polyolefine sheathing compound for coaxial cable and preparation method thereof |
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| CN2010106049333A CN102153812B (en) | 2010-12-25 | 2010-12-25 | Polyolefine sheathing compound for coaxial cable and preparation method thereof |
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| CN102977466A (en) * | 2012-11-05 | 2013-03-20 | 安徽金桥电缆有限公司 | Flame-retardant, environmentally-friendly and safe polyolefin sheath material and its preparation method |
| CN103012940A (en) * | 2012-09-29 | 2013-04-03 | 深圳市沃尔核材股份有限公司 | High temperature self-crosslinking halogen-free flame retardant cable insulation material or sheath material and method for preparing high temperature self-crosslinking halogen-free flame retardant cable insulation material or sheath material |
| CN103093873A (en) * | 2012-12-28 | 2013-05-08 | 深圳市沃尔核材股份有限公司 | Halogen-free high-flame-retardant cable |
| CN103524844A (en) * | 2013-09-30 | 2014-01-22 | 芜湖航天特种电缆厂 | High-temperature-resistant cable sheath material and preparation method thereof |
| 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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Effective date of registration: 20160114 Address after: Ke Feng Lu Science City high tech Industrial Development Zone of Guangzhou City, Guangdong Province, No. 33 510660 Patentee after: Kingfa Technology Co., Ltd. Patentee after: Shanghai Kingfa Science and Technology Development Co., Ltd. Patentee after: SICHUAN KINGFA TECHNOLOGY DEVELOPMENT CO., LTD. Address before: Ke Feng Lu Science City high tech Industrial Development Zone of Guangzhou City, Guangdong Province, No. 33 510660 Patentee before: Kingfa Technology Co., Ltd. Patentee before: Shanghai Kingfa Science and Technology Development Co., Ltd. Patentee before: Mianyang Dongfang Special Engineering Plastic Co., Ltd. |