CN102924779B - Bus bar heat-shrinkable tube and preparation method thereof - Google Patents
Bus bar heat-shrinkable tube and preparation method thereof Download PDFInfo
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- CN102924779B CN102924779B CN201210428657.9A CN201210428657A CN102924779B CN 102924779 B CN102924779 B CN 102924779B CN 201210428657 A CN201210428657 A CN 201210428657A CN 102924779 B CN102924779 B CN 102924779B
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- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 229920000181 Ethylene propylene rubber Polymers 0.000 claims abstract description 27
- 239000003063 flame retardant Substances 0.000 claims abstract description 23
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 21
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 21
- 238000004132 cross linking Methods 0.000 claims abstract description 20
- 230000005855 radiation Effects 0.000 claims abstract description 20
- 229920005989 resin Polymers 0.000 claims abstract description 17
- 239000011347 resin Substances 0.000 claims abstract description 17
- 239000000314 lubricant Substances 0.000 claims abstract description 11
- 238000001125 extrusion Methods 0.000 claims abstract description 10
- 238000005303 weighing Methods 0.000 claims abstract description 4
- 239000000126 substance Substances 0.000 claims description 25
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims description 15
- -1 [methyl-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester Chemical class 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 13
- 229920002545 silicone oil Polymers 0.000 claims description 13
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 claims description 12
- 239000003112 inhibitor Substances 0.000 claims description 11
- 230000003647 oxidation Effects 0.000 claims description 11
- 238000007254 oxidation reaction Methods 0.000 claims description 11
- 150000001412 amines Chemical class 0.000 claims description 10
- HQKMJHAJHXVSDF-UHFFFAOYSA-L magnesium stearate Chemical compound [Mg+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O HQKMJHAJHXVSDF-UHFFFAOYSA-L 0.000 claims description 10
- 150000002989 phenols Chemical class 0.000 claims description 10
- 238000005469 granulation Methods 0.000 claims description 8
- 230000003179 granulation Effects 0.000 claims description 8
- 229920001684 low density polyethylene Polymers 0.000 claims description 6
- 239000004702 low-density polyethylene Substances 0.000 claims description 6
- XOUQAVYLRNOXDO-UHFFFAOYSA-N 2-tert-butyl-5-methylphenol Chemical compound CC1=CC=C(C(C)(C)C)C(O)=C1 XOUQAVYLRNOXDO-UHFFFAOYSA-N 0.000 claims description 5
- MQWCQFCZUNBTCM-UHFFFAOYSA-N 2-tert-butyl-6-(3-tert-butyl-2-hydroxy-5-methylphenyl)sulfanyl-4-methylphenol Chemical compound CC(C)(C)C1=CC(C)=CC(SC=2C(=C(C=C(C)C=2)C(C)(C)C)O)=C1O MQWCQFCZUNBTCM-UHFFFAOYSA-N 0.000 claims description 5
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 claims description 5
- KEQFTVQCIQJIQW-UHFFFAOYSA-N N-Phenyl-2-naphthylamine Chemical compound C=1C=C2C=CC=CC2=CC=1NC1=CC=CC=C1 KEQFTVQCIQJIQW-UHFFFAOYSA-N 0.000 claims description 5
- 239000004698 Polyethylene Substances 0.000 claims description 5
- 235000021355 Stearic acid Nutrition 0.000 claims description 5
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 5
- 229910021502 aluminium hydroxide Inorganic materials 0.000 claims description 5
- QYMGIIIPAFAFRX-UHFFFAOYSA-N butyl prop-2-enoate;ethene Chemical compound C=C.CCCCOC(=O)C=C QYMGIIIPAFAFRX-UHFFFAOYSA-N 0.000 claims description 5
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 claims description 5
- 239000008116 calcium stearate Substances 0.000 claims description 5
- 235000013539 calcium stearate Nutrition 0.000 claims description 5
- 239000002131 composite material Substances 0.000 claims description 5
- 229920001577 copolymer Polymers 0.000 claims description 5
- VKLYZBPBDRELST-UHFFFAOYSA-N ethene;methyl 2-methylprop-2-enoate Chemical compound C=C.COC(=O)C(C)=C VKLYZBPBDRELST-UHFFFAOYSA-N 0.000 claims description 5
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 5
- 229920006245 ethylene-butyl acrylate Polymers 0.000 claims description 5
- 229920006244 ethylene-ethyl acrylate Polymers 0.000 claims description 5
- 229920006225 ethylene-methyl acrylate Polymers 0.000 claims description 5
- SYECJBOWSGTPLU-UHFFFAOYSA-N hexane-1,1-diamine Chemical compound CCCCCC(N)N SYECJBOWSGTPLU-UHFFFAOYSA-N 0.000 claims description 5
- 235000019359 magnesium stearate Nutrition 0.000 claims description 5
- 229920001179 medium density polyethylene Polymers 0.000 claims description 5
- 239000004701 medium-density polyethylene Substances 0.000 claims description 5
- ZQKXQUJXLSSJCH-UHFFFAOYSA-N melamine cyanurate Chemical compound NC1=NC(N)=NC(N)=N1.O=C1NC(=O)NC(=O)N1 ZQKXQUJXLSSJCH-UHFFFAOYSA-N 0.000 claims description 5
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 5
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 5
- XZTOTRSSGPPNTB-UHFFFAOYSA-N phosphono dihydrogen phosphate;1,3,5-triazine-2,4,6-triamine Chemical compound NC1=NC(N)=NC(N)=N1.OP(O)(=O)OP(O)(O)=O XZTOTRSSGPPNTB-UHFFFAOYSA-N 0.000 claims description 5
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 5
- 229920000573 polyethylene Polymers 0.000 claims description 5
- 125000001501 propionyl group Chemical group O=C([*])C([H])([H])C([H])([H])[H] 0.000 claims description 5
- 239000008117 stearic acid Substances 0.000 claims description 5
- 229920001862 ultra low molecular weight polyethylene Polymers 0.000 claims 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 13
- 238000010276 construction Methods 0.000 abstract description 5
- GUTLYIVDDKVIGB-OUBTZVSYSA-N Cobalt-60 Chemical compound [60Co] GUTLYIVDDKVIGB-OUBTZVSYSA-N 0.000 abstract 1
- 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 abstract 1
- JZZIHCLFHIXETF-UHFFFAOYSA-N dimethylsilicon Chemical compound C[Si]C JZZIHCLFHIXETF-UHFFFAOYSA-N 0.000 abstract 1
- 230000002349 favourable effect Effects 0.000 abstract 1
- 229910052901 montmorillonite Inorganic materials 0.000 abstract 1
- 239000003921 oil Substances 0.000 abstract 1
- 230000032683 aging Effects 0.000 description 21
- 238000000034 method Methods 0.000 description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 7
- 229910052802 copper Inorganic materials 0.000 description 7
- 239000010949 copper Substances 0.000 description 7
- 239000000047 product Substances 0.000 description 7
- 208000037656 Respiratory Sounds Diseases 0.000 description 5
- 230000008602 contraction Effects 0.000 description 5
- 238000009413 insulation Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003679 aging effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000004807 localization Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000019612 pigmentation Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Abstract
The invention relates to a bus bar heat-shrinkable tube which is prepared from the following components in parts by weight: 60-80 parts of base resin, 20-40 parts of ethylene-propylene rubber, 5-8 parts of dimethyl silicon oil, 40-70 parts of flame retardant, 4-10 parts of antioxidant, 2-4 parts of nano montmorillonite, 2-5 parts of lubricant and 4-8 parts of color batch. The preparation method of the bus bar heat-shrinkable tube comprises the following steps: 1. weighing the components according to parts by weight; 2. mixing and granulating with a Banbury mixer or parallel double screw extruder, and extruding with a single screw extruder to obtain a tube; 3. treating the external surface of the extruded tube with infrared light, of which the wavelength is 700-1600nm, in the position 5-10cm away from the extrusion die of the extruder; and 4. carrying out radiation crosslinking on the tube with cobalt 60 or electron accelerator 50-160kGy, and expanding the tube subjected to radiation crosslinking at 85-135 DEG C. The bus bar heat-shrinkable tube provided by the invention has the advantages of favorable insulating property and long service life, and is convenient for construction.
Description
Technical field
The present invention relates to a kind of heat-shrink tube and preparation method thereof, particularly relating to can for heat-shrink tube of bus insulation protection and preparation method thereof.
Background technology
Bus-bar shrinkable tube is widely used in various substation, transformer, switching cabinet median generatrix insulation protection occasion; clearly propose in country's " 12 planning outline " " continuing Promote rural electric network reconstruction "; the guilding principle " strengthening power grid construction, development intelligent grid ".The only upgrading of rural power grids one, the scale of investment during 12, just at 3000 ~ 5,000 hundred million yuans, along with the construction of power infrastructures is strengthened, estimates that the market scale of annual 10 ~ 36kV voltage range high-performance bus-bar shrinkable tube is at 4 ~ 500,000,000 Renminbi.
But for a long time, China's bus-bar shrinkable tube mostly is low pressure low-end product, certain gap is also there is with the like product of external major company Tyco, 3M in 10 ~ 36kV voltage range high-performance bus-bar shrinkable tube on overall performance, the high-end applications market of pyrocondensation busbar hold by offshore company, development 10 ~ 36kV voltage range high-performance pyrocondensation bus-bar casing tube is conducive to the monopoly position breaking external product, for country saves foreign exchange, strengthen the localization rate of parts and components of power infrastructures and equipment.
Current bus-bar shrinkable tube insulating property are poor, working life is short, constructional difficulties, and these problems demand solve.
Summary of the invention
The technical problem to be solved in the present invention is: overcome that existing bus-bar shrinkable tube insulating property are poor, working life is short, the problem of constructional difficulties, provides bus-bar shrinkable tube of a kind of good insulation preformance, long service life, convenient construction and preparation method thereof.
In order to solve the problems of the technologies described above, the present invention proposes following technical scheme: a kind of bus-bar shrinkable tube, and it is made up of the following component according to weighing scale:
Basic resin 60-80 part;
Ethylene-propylene rubber(EPR) 20-40 part;
Dimethyl silicone oil 5-8 part;
Fire retardant 40-70 part;
Oxidation inhibitor 4-10 part;
Nano imvite 2-4 part;
Lubricant 2-5 part;
Colour batch 4-8 part.
The further restriction of technique scheme is: described basic resin is one or more in following substances: medium-density polyethylene; Low Density Polyethylene; Ultra-low density polyethylene; Ethylene methyl methacrylate multipolymer; Ethylene-methyl acrylate copolymer; Ethylene-ethyl acrylate copolymer; Ethylene-butyl acrylate copolymer; Ethylene-vinyl acetate copolymer; Ethylene-octene copolymer.
The further restriction of technique scheme is: described dimethyl silicone oil range of viscosities is 5000-30000cst.
The further restriction of technique scheme is: described fire retardant is formed by 2:2:1 is composite by aluminium hydroxide, melamine cyanurate, melamine pyrophosphate.
The further restriction of technique scheme is: described oxidation inhibitor is one or more in following substances: Hinered phenols antioxidant, suffocated amine antioxidant;
Described Hinered phenols antioxidant is one or more in following substances: 2,2'-thiobis (4-methyl-6-tertiary butyl phenol); Four [methyl-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester; 3,5-di-tert-butyl-hydroxy phenyl propionic acid octadecanol ester; N, N'-pair-[3-(3,5-di-tert-butyl-hydroxy phenyl) propionyl] hexanediamine; 4,4 '-thiobis (the 6-tertiary butyl-3-methylphenol); 1,3,5-trimethylammonium-2,4,6-tri-(3,5-di-tert-butyl-4-hydroxyl benzyl) benzene; 2,6 ditertiary butyl p cresol;
Described suffocated amine antioxidant is one or more in following substances: N-phenyl-a-naphthylamine; N-Phenyl beta naphthylamine; N, N'-bis-(betanaphthyl) Ursol D; 2-thiol group benzimidazolyl; 2-thiol group benzimidazolyl zinc salt.
The further restriction of technique scheme is: described lubricant is one or more in following substances: polyethylene wax; Stearic acid; Zinic stearas; Magnesium Stearate; Calcium stearate.
In order to solve the problems of the technologies described above, the present invention proposes following technical scheme: a kind of preparation method of described bus-bar shrinkable tube, it comprises the steps:
Step 1: take basic resin 60-80 part, ethylene-propylene rubber(EPR) 20-40 part, dimethyl silicone oil 5-8 part, fire retardant 40-70 part, oxidation inhibitor 4-10 part, nano imvite 2-4 part, lubricant 2-5 part, colour batch 4-8 part by weight;
Step 2: through mixer mixing granulation or parallel double-screw extruder mixing granulator, be then extruded into tubing with single screw extrusion machine;
Step 3: extruding pipe material outside surface is processed at the infrared light being 700nm-1600nm apart from extruding dies 5-10cm place wavelength;
Step 4: described tubing is through Co 60 or rumbatron 50-160KGy radiation crosslinking, and the tubing after radiation crosslinking expands 2-4 doubly at 85-135 DEG C of temperature.
The further restriction of technique scheme is: described basic resin is one or more in following substances: medium-density polyethylene; Low Density Polyethylene; Ultra-low density polyethylene; Ethylene methyl methacrylate multipolymer; Ethylene-methyl acrylate copolymer; Ethylene-ethyl acrylate copolymer; Ethylene-butyl acrylate copolymer; Ethylene-vinyl acetate copolymer; Ethylene-octene copolymer.
The further restriction of technique scheme is: described dimethyl silicone oil range of viscosities is 5000-30000cst.
The further restriction of technique scheme is: described fire retardant is formed by 2:2:1 is composite by aluminium hydroxide, melamine cyanurate, melamine pyrophosphate;
Described oxidation inhibitor is one or more in following substances: Hinered phenols antioxidant, suffocated amine antioxidant;
Described Hinered phenols antioxidant is one or more in following substances: 2,2'-thiobis (4-methyl-6-tertiary butyl phenol); Four [methyl-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester; 3,5-di-tert-butyl-hydroxy phenyl propionic acid octadecanol ester; N, N'-pair-[3-(3,5-di-tert-butyl-hydroxy phenyl) propionyl] hexanediamine; 4,4 '-thiobis (the 6-tertiary butyl-3-methylphenol); 1,3,5-trimethylammonium-2,4,6-tri-(3,5-di-tert-butyl-4-hydroxyl benzyl) benzene; 2,6 ditertiary butyl p cresol;
Described suffocated amine antioxidant is one or more in following substances: N-phenyl-a-naphthylamine; N-Phenyl beta naphthylamine; N, N'-bis-(betanaphthyl) Ursol D; 2-thiol group benzimidazolyl; 2-thiol group benzimidazolyl zinc salt;
Described lubricant is one or more in following substances: polyethylene wax; Stearic acid; Zinic stearas; Magnesium Stearate; Calcium stearate.
Compared with prior art, the present invention has following beneficial effect: the topmost feature of ethylene-propylene rubber(EPR) is exactly that high-low temperature resistant is aging and corrosion resistance is superior, be suitable for the outdoor application condition of substation, transformer, switching cabinet, but ethylene-propylene rubber(EPR) does not have pyrocondensation function, can not heat-shrink tube be made.Basic resin has pyrocondensation function after radiation crosslinking, but compares with ethylene-propylene rubber(EPR), and the aging and corrosion resistance of high-low temperature resistant is far short of what is expected, is difficult to meet the requirement that bus-bar shrinkable tube uses for a long time.Ethylene-propylene rubber(EPR) and basic resin share, aging and the anti-erosion characteristic of the high-low temperature resistant of ethylene-propylene rubber(EPR) excellence can be played, the radiation crosslinking feature of basic resin can be played again, prepare heat-shrink tube and can use 20 years at 90 DEG C of temperature, after 150 DEG C/1200h thermal ageing, product elongation at break meets the demands.
Dimethyl silicone oil and basic resin and ethylene-propylene rubber(EPR) consistency poor, in extrusion, through the infrared light short period of time to pipe outer surface process, comparatively internal surface is finer and close to make the structure of outside surface, silicone oil progressively oozes out from internal surface, makes product play lubrication in cover bus process.
Bus-bar shrinkable tube of the present invention, resistance to cracking can be good, by the V-notch cracking test of 120 DEG C/168h, greatly reduces the probability that some defects of producing in construction process are split in follow-up use procedure.
Bus-bar shrinkable tube of the present invention, can use 20 years under 90 DEG C of temperature condition, it is arranged in substation, transformer, switching cabinet, can complete its predetermined function, have heat shrink function, be arranged on bus and play insulating effect under ambient environment.
Bus-bar shrinkable tube of the present invention, flame retardant properties is good, by IEC60332 flame retardant test; The blended ethylene-propylene rubber(EPR) of basic resin, high and low temperature resistance is excellent, after 120 DEG C/168h high temperature ageing and-55 DEG C/4h subzero treatment, by industrial frequency withstand voltage test and lightning impulse test; Basic resin, ethylene-propylene rubber(EPR) and oxidation inhibitor use, heat aging property is given prominence to, and after 150 DEG C/1200h thermal ageing, the elongation at break of product is much larger than its performance requriements; Dimethyl silicone oil oozes out at internal surface, makes product oilness when overlapping copper bar and using fine, is conveniently inserted in copper bar.
Embodiment
The present invention proposes a kind of bus-bar shrinkable tube, and it is made up of the following component according to weighing scale:
Basic resin 60-80 part;
Ethylene-propylene rubber(EPR) 20-40 part;
Dimethyl silicone oil 5-8 part;
Fire retardant 40-70 part;
Oxidation inhibitor 4-10 part;
Nano imvite 2-4 part;
Lubricant 2-5 part;
Colour batch 4-8 part.
Described basic resin is one or more in following substances: medium-density polyethylene; Low Density Polyethylene; Ultra-low density polyethylene; Ethylene methyl methacrylate multipolymer; Ethylene-methyl acrylate copolymer; Ethylene-ethyl acrylate copolymer; Ethylene-butyl acrylate copolymer; Ethylene-vinyl acetate copolymer; Ethylene-octene copolymer;
Described dimethyl silicone oil range of viscosities is 5000-30000cst.
Described fire retardant is formed by 2:2:1 is composite by aluminium hydroxide, melamine cyanurate, melamine pyrophosphate;
Described oxidation inhibitor is one or more in following substances: Hinered phenols antioxidant; Suffocated amine antioxidant.
Described Hinered phenols antioxidant is one or more in following substances: 2,2'-thiobis (4-methyl-6-tertiary butyl phenol); Four [methyl-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester; 3,5-di-tert-butyl-hydroxy phenyl propionic acid octadecanol ester; N, N'-pair-[3-(3,5-di-tert-butyl-hydroxy phenyl) propionyl] hexanediamine; 4,4 '-thiobis (the 6-tertiary butyl-3-methylphenol); 1,3,5-trimethylammonium-2,4,6-tri-(3,5-di-tert-butyl-4-hydroxyl benzyl) benzene; 2,6 ditertiary butyl p cresol.
Described suffocated amine antioxidant is one or more in following substances: N-phenyl-a-naphthylamine; N-Phenyl beta naphthylamine; N, N'-bis-(betanaphthyl) Ursol D; 2-thiol group benzimidazolyl; 2-thiol group benzimidazolyl zinc salt.
Described nano imvite plays reinforced insulation effect, commercially available.
Described lubricant is one or more in following substances: polyethylene wax; Stearic acid; Zinic stearas; Magnesium Stearate; Calcium stearate.
Described colour batch is the mixture of Low Density Polyethylene and toner, plays pigmentation, commercially available.
Prepare the preparation method of above-mentioned bus-bar shrinkable tube, comprise the steps:
Step 1: take basic resin 60-80 part, ethylene-propylene rubber(EPR) 20-40 part, dimethyl silicone oil 5-8 part, fire retardant 40-70 part, oxidation inhibitor 4-10 part, nano imvite 2-4 part, lubricant 2-5 part, colour batch 4-8 part by weight;
Step 2: through mixer mixing granulation or parallel double-screw extruder mixing granulator, be then extruded into tubing with single screw extrusion machine;
Step 3: extruding pipe material outside surface is processed at the infrared light being 700nm-1600nm apart from extruding dies 5-10cm place wavelength;
Step 4: described tubing is through Co 60 or rumbatron 50-160KGy radiation crosslinking, and the tubing after radiation crosslinking expands 2-4 doubly at 85-135 DEG C of temperature.
Preparation embodiment 1
Various component is taken according to weight listed in Table.
Above-mentioned materials, through mixer mixing granulation, is then extruded into tubing with single screw extrusion machine.
At the infrared light being 700-1600nm apart from extruding dies 5-10cm place wavelength, extruding pipe material outside surface is processed.
Described tubing is through Co 60 or rumbatron 50KGy radiation crosslinking, and the tubing after radiation crosslinking expands 2.5 times at 95 DEG C of temperature, obtains bus-bar shrinkable tube, and its performance is as follows.
Flame retardant resistance: by IEC60332 flame retardant test.
Tensile strength 12.6MPa, elongation at break 645%.
120 DEG C/168h is aging, and after-55 DEG C/4h subzero treatment, industrial frequency withstand voltage test and lightning impulse test are passed through.
After the limited contraction of bus-bar shrinkable tube cover copper bar, cut V-notch, aging by 120 DEG C/168h condition, crackle is without any extension.
After 150 DEG C/1200h is aging, elongation at break 478%.
Preparation embodiment 2
Various component is taken according to weight listed in Table.
Above-mentioned materials, through mixer mixing granulation, is then extruded into tubing with single screw extrusion machine.
At the infrared light being 700-1600nm apart from extruding dies 5-10cm place wavelength, extruding pipe material outside surface is processed.
Described tubing is through Co 60 or rumbatron 160KGy radiation crosslinking, and the tubing after radiation crosslinking expands 2.5 times at 105 DEG C of temperature, obtains bus-bar shrinkable tube, and its performance is as follows:
Flame retardant resistance: by IEC60332 flame retardant test.
Tensile strength 14.7MPa, elongation at break 528%.
120 DEG C/168h is aging, and after-55 DEG C/4h subzero treatment, industrial frequency withstand voltage test and lightning impulse test are passed through.
After the limited contraction of bus-bar shrinkable tube cover copper bar, cut V-notch, aging by 120 DEG C/168h condition, crackle is without any extension.
After 150 DEG C/1200h is aging, elongation at break 434%.
Preparation embodiment 3
Various component is taken according to weight listed in Table.
Above-mentioned materials, through mixer mixing granulation, is then extruded into tubing with single screw extrusion machine.
At the infrared light being 700-1600nm apart from extruding dies 5-10cm place wavelength, extruding pipe material outside surface is processed.
Described tubing is through Co 60 or rumbatron 120KGy radiation crosslinking, and the tubing after radiation crosslinking expands 2.5 times at 115 DEG C of temperature, obtains bus-bar shrinkable tube, and its performance is as follows:
Flame retardant resistance: by IEC60332 flame retardant test.
Tensile strength 13.2MPa, elongation at break 632%.
120 DEG C/168h is aging, and after-55 DEG C/4h subzero treatment, industrial frequency withstand voltage test and lightning impulse test are passed through.
After the limited contraction of bus-bar shrinkable tube cover copper bar, cut V-notch, aging by 120 DEG C/168h condition, crackle is without any extension.
After 150 DEG C/1200h is aging, elongation at break 569%.
Preparation embodiment 4
Various component is taken according to weight listed in Table.
Above-mentioned materials, through mixer mixing granulation, is then extruded into tubing with single screw extrusion machine.
At the infrared light being 700-1600nm apart from extruding dies 5-10cm place wavelength, extruding pipe material outside surface is processed.
Described tubing is through Co 60 or rumbatron 80KGy radiation crosslinking, and the tubing after radiation crosslinking expands 2.5 times at 100 DEG C of temperature, obtains bus-bar shrinkable tube, and its performance is as follows:
Flame retardant resistance: by IEC60332 flame retardant test.
Tensile strength 13.6MPa, elongation at break 675%.
120 DEG C/168h is aging, and after-55 DEG C/4h subzero treatment, industrial frequency withstand voltage test and lightning impulse test are passed through.
After the limited contraction of bus-bar shrinkable tube cover copper bar, cut V-notch, aging by 120 DEG C/168h condition, crackle is without any extension.
After 150 DEG C/1200h is aging, elongation at break 546%.
Preparation embodiment 5
Various component is taken according to weight listed in Table.
?above-mentioned materials, through mixer mixing granulation, is then extruded into tubing with single screw extrusion machine.
At the infrared light being 700-1600nm apart from extruding dies 5-10cm place wavelength, extruding pipe material outside surface is processed.
Described tubing is through Co 60 or rumbatron 120KGy radiation crosslinking, and the tubing after radiation crosslinking expands 2.5 times at 110 DEG C of temperature, obtains bus-bar shrinkable tube, and its performance is as follows:
Flame retardant resistance: by IEC60332 flame retardant test.
Tensile strength 15.5MPa, elongation at break 587%.
120 DEG C/168h is aging, and after-55 DEG C/4h subzero treatment, industrial frequency withstand voltage test and lightning impulse test are passed through.
After the limited contraction of bus-bar shrinkable tube cover copper bar, cut V-notch, aging by 120 DEG C/168h condition, crackle is without any extension.
After 150 DEG C/1200h is aging, elongation at break 466%.
Above five embodiments, product performance all meet bus-bar shrinkable tube requirement, can use 20 years under 90 DEG C of temperature condition.
Claims (2)
1. a bus-bar shrinkable tube, it is made up of the following component according to weighing scale:
Described basic resin is one or more in following substances: medium-density polyethylene; Low Density Polyethylene; Ultra-low density polyethylene; Ethylene methyl methacrylate multipolymer; Ethylene-methyl acrylate copolymer; Ethylene-ethyl acrylate copolymer; Ethylene-butyl acrylate copolymer; Ethylene-vinyl acetate copolymer; Ethylene-octene copolymer;
Described dimethyl silicone oil range of viscosities is 5000-30000cst;
Described fire retardant is formed by 2:2:1 is composite by aluminium hydroxide, melamine cyanurate, melamine pyrophosphate;
Described oxidation inhibitor is one or more in following substances: Hinered phenols antioxidant, suffocated amine antioxidant;
Described Hinered phenols antioxidant is one or more in following substances: 2,2'-thiobis (4-methyl-6-tertiary butyl phenol); Four [methyl-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester; 3,5-di-tert-butyl-hydroxy phenyl propionic acid octadecanol ester; N, N'-pair-[3-(3,5-di-tert-butyl-hydroxy phenyl) propionyl] hexanediamine; 4,4 '-thiobis (the 6-tertiary butyl-3-methylphenol); 1,3,5-trimethylammonium-2,4,6-tri-(3,5-di-tert-butyl-4-hydroxyl benzyl) benzene; 2,6 ditertiary butyl p cresol;
Described suffocated amine antioxidant is one or more in following substances: N-phenyl-a-naphthylamine; N-Phenyl beta naphthylamine; N, N'-bis-(betanaphthyl) Ursol D; 2-thiol group benzimidazolyl; 2-thiol group benzimidazolyl zinc salt;
Described lubricant is one or more in following substances: polyethylene wax; Stearic acid; Zinic stearas; Magnesium Stearate; Calcium stearate.
2. a preparation method for bus-bar shrinkable tube as claimed in claim 1, is characterized in that: it comprises the steps:
Step 1: take basic resin 60-80 part, ethylene-propylene rubber(EPR) 20-40 part, dimethyl silicone oil 5-8 part, fire retardant 40-70 part, oxidation inhibitor 4-10 part, nano imvite 2-4 part, lubricant 2-5 part, colour batch 4-8 part by weight;
Step 2: through mixer mixing granulation or parallel double-screw extruder mixing granulator, be then extruded into tubing with single screw extrusion machine;
Step 3: extruding pipe material outside surface is processed at the infrared light being 700nm-1600nm apart from extruding dies 5-10cm place wavelength;
Step 4: described tubing is through Co 60 or rumbatron 50-160KGy radiation crosslinking, and the tubing after radiation crosslinking expands 2-4 doubly at 85-135 DEG C of temperature;
Described basic resin is one or more in following substances: medium-density polyethylene; Low Density Polyethylene; Ultra-low density polyethylene; Ethylene methyl methacrylate multipolymer; Ethylene-methyl acrylate copolymer; Ethylene-ethyl acrylate copolymer; Ethylene-butyl acrylate copolymer; Ethylene-vinyl acetate copolymer; Ethylene-octene copolymer;
Described dimethyl silicone oil range of viscosities is 5000-30000cst;
Described fire retardant is formed by 2:2:1 is composite by aluminium hydroxide, melamine cyanurate, melamine pyrophosphate;
Described oxidation inhibitor is one or more in following substances: Hinered phenols antioxidant, suffocated amine antioxidant;
Described Hinered phenols antioxidant is one or more in following substances: 2,2'-thiobis (4-methyl-6-tertiary butyl phenol); Four [methyl-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester; 3,5-di-tert-butyl-hydroxy phenyl propionic acid octadecanol ester; N, N'-pair-[3-(3,5-di-tert-butyl-hydroxy phenyl) propionyl] hexanediamine; 4,4 '-thiobis (the 6-tertiary butyl-3-methylphenol); 1,3,5-trimethylammonium-2,4,6-tri-(3,5-di-tert-butyl-4-hydroxyl benzyl) benzene; 2,6 ditertiary butyl p cresol;
Described suffocated amine antioxidant is one or more in following substances: N-phenyl-a-naphthylamine; N-Phenyl beta naphthylamine; N, N'-bis-(betanaphthyl) Ursol D; 2-thiol group benzimidazolyl; 2-thiol group benzimidazolyl zinc salt;
Described lubricant is one or more in following substances: polyethylene wax; Stearic acid; Zinic stearas; Magnesium Stearate; Calcium stearate.
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| CN103483678A (en) * | 2013-10-12 | 2014-01-01 | 长园集团股份有限公司 | Nuclear-grade cable insulation material |
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| CN103739930B (en) * | 2014-01-10 | 2016-06-01 | 长园电子（东莞）有限公司 | A kind of halogen-free flameproof pyrocondensation bus-bar casing tube and its preparation method |
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| CN104371182A (en) * | 2014-11-10 | 2015-02-25 | 长园集团股份有限公司 | 135 DEG C irradiation-crosslinked polyolefin heat-shrinkable tube |
| CN104530543A (en) * | 2014-12-17 | 2015-04-22 | 大连联合高分子材料有限公司 | Halogen-free environmental-friendly flame-retardant bus-bar insulating heat-shrinkable bushing and preparation method thereof |
| CN105199203A (en) * | 2015-10-16 | 2015-12-30 | 太仓市晨洲塑业有限公司 | High-performance polyethylene communication sub-pipe |
| CN106317589A (en) * | 2016-08-18 | 2017-01-11 | 苏州泰斯拓伟机电设备有限公司 | Radiation crosslinking butadiene styrene rubber heat shrink tube and preparation method thereof |
| CN106279950A (en) * | 2016-08-18 | 2017-01-04 | 苏州泰斯拓伟机电设备有限公司 | A kind of modified bus-bar shrinkable tube and preparation method thereof |
| CN106782787A (en) * | 2016-12-28 | 2017-05-31 | 长园电子（东莞）有限公司 | A kind of low smell automobile double wall heat draws of low VOC and preparation method |
| CN114151639A (en) * | 2021-11-27 | 2022-03-08 | 潍坊中石科技有限公司 | PE pipe, production method of PE pipe and steel-plastic adapter adopting PE pipe |
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