CN107793689A - A kind of high temperature tear-proof pyrocondensation bus-bar protective sleeve material prescription and its production method - Google Patents
A kind of high temperature tear-proof pyrocondensation bus-bar protective sleeve material prescription and its production method Download PDFInfo
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- CN107793689A CN107793689A CN201711056460.6A CN201711056460A CN107793689A CN 107793689 A CN107793689 A CN 107793689A CN 201711056460 A CN201711056460 A CN 201711056460A CN 107793689 A CN107793689 A CN 107793689A
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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
- C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
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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
- 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
- C08K2003/2217—Oxides; Hydroxides of metals of magnesium
- C08K2003/2224—Magnesium hydroxide
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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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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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
- C08L2203/18—Applications used for pipes
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- Polymers & Plastics (AREA)
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Abstract
The present invention discloses a kind of high temperature tear-proof pyrocondensation bus-bar protective sleeve material prescription and production method, including following composition, by weight, contains：20 50 parts of polyethylene；30 80 parts of ethylene octene block copolymer；10 35 parts of ACM；3 10 parts of ethylene-acrylate maleic anhydride terpolymer；5 15 parts of microencapsulated powder oil；60 110 parts of Halogenless composite fire retardant；0.5 2 parts of lubricant；1.5 4.5 parts of plasticizer；It is sensitized 1 2.5 parts of crosslinking agent；1.5 3.5 parts of composite antioxidant.High temperature tear-proof Heat-shrinkable bus-bar protective sleeve of the present invention has excellent high temperature lear energy; in the case where cutting 10mm breaches to its end; progress electric current is 3150A, the temperature rise test that the time is 8 hours; temperature rise >=120 DEG C; when copper bar actual surface temperature is more than 150 DEG C; also cracking phenomena will not occur, and breach length does not increase.
Description
Technical field
The present invention relates to heat shrinkable pipe material technical field, more particularly to a kind of high temperature tear-proof Heat-shrinkable bus-bar protective sleeve
And its production method.
Background technology
Heat-shrinkable bus-bar protective sleeve is mainly used in the insulating protection of transformer station's busbar and high-low voltage switch cabinet busbar, can
So that compact-sizedization of switch cubicle（Phase spacing shortens）, prevent sporadic short circuit accident.During switch cubicle works, especially
, in peak times of power consumption, by the actual measurement of thermocouple, the actual temperature rise of copper bar surface temperature is up to 150 DEG C, therefore, thermal contraction for it
Bus-bar protective sleeve uses at this temperature for a long time, in the case that especially there is the edge of a knife or burr retained during cutting in end,
Cracking phenomena easily occurs, and effective insulating protection can not be carried out to copper bar, so as to cause the alternate generation of switch cabinet busbar short
Road, climb the great security incident such as electricity.Therefore, developing a high temperature resistant and can have excellent tear resistance at high temperature
The Heat-shrinkable bus-bar protective sleeve of energy becomes technical barrier urgently to be resolved hurrily in industry.
The content of the invention
The present invention is directed to the technical problem that heat-shrinkable tube easily ftractures under high temperature, there is provided a kind of high temperature tear-proof heat is received
Contracting bus-bar protective sleeve and its production method.
To reach above-mentioned purpose, the present invention provides a kind of halogen-free stibium-free antiflaming high temperature heat-resistant draw material prescription, including with
Lower composition, by weight, contains：
Polyethylene 20-50 parts；
Ethylene-octene block copolymer 30-80 parts；
ACM 10-35 parts；
Ethylene-acrylate-maleic anhydride terpolymer 3-10 parts；
Microencapsulated powder oil 5-15 parts；
Halogenless composite fire retardant 60-110 parts；
Lubricant 0.5-2 parts；
Plasticizer 1.5-4.5 parts；
It is sensitized crosslinking agent 1-2.5 parts；
Composite antioxidant 1.5-3.5 parts.
Preferably, the polyethylene is LLDPE（LLDPE）, high density polyethylene (HDPE)（HDPE）In one kind
Or two kinds.
Preferably, the ethylene-octene block copolymer（OBCs）Melt index be 0.5 ~ 5g/10min, density is
0.866~0.887g/cm3。
Preferably, the Mooney viscosity of the ACM is 16.5 ~ 31ML（1+4）@100℃.
Preferably, the butyl acrylate content of the ethylene-acrylate-maleic anhydride terpolymer is 6% ~ 10%,
Maleic anhydride content is 1.3% ~ 3.1%, and melt index is 2 ~ 5g/10min.
Preferably, the microencapsulated powder oil is red mobility red phosphorus powder of the surface Jing Guo secondary cladding, red phosphorus
Content is not less than 85%, 5-10 μm of particle diameter, the g/cm of relative density 2.13, the g/cm of bulk density 0.63。
Preferably, the Halogenless composite fire retardant is nano-calcium carbonate, magnesium hydroxide, MCA（MCA）
Or the one or more in aluminium hydroxide are compounded.
Preferably, the lubricant is zinc stearate or N ' N- ethylene bis stearamides（EBS）One or both of.
Preferably, the plasticizer is epoxidized soybean oil or terephthalic acid (TPA) dibutyl ester（DOTP）.
Preferably, the sensitization crosslinking agent is trimethylol-propane trimethacrylate（TMPTMA）, triallyl it is different
Cyanurate（TAIC）One or both of.
Preferably, the antioxidant is formed by Hinered phenols primary antioxidant and phosphorous acid esters auxiliary antioxidant compounding,
Or formed by Hinered phenols primary antioxidant and thio esters auxiliary antioxidant compounding.Wherein described Hinered phenols primary antioxidant is
Four β-（3,5- di-tert-butyl-hydroxy phenyls）Propionic acid ］ pentaerythritol ester（Antioxidant 1010）Or 3-（3,5 di-t-butyl -4-
Hydroxy phenyl）Propionic acid n-octadecane alcohol ester（Antioxidant 1076）One or both of；The phosphorous acid esters auxiliary antioxidant
For three（2,4- di-tert-butyl-phenyls）Phosphite ester（Irgasfos 168）It is or double（2,4- di-tert-butyl-phenyls）The phosphorous of pentaerythrite two
Acid esters（Antioxidant 626）One or both of；The thio esters auxiliary antioxidant is thio-2 acid 2 stearyl ester（It is anti-
Oxygen agent DSTP）, the double lauryls of thio-2 acid（Anti-oxidant DLTP）In one or more.
The present invention provides a kind of production method of high temperature tear-proof Heat-shrinkable bus-bar protective sleeve, including step：
A）According to above-mentioned high temperature tear-proof pyrocondensation bus-bar protective sleeve material prescription, by 20-50 parts polyethylene, 30-80 part second
Alkene-octene block copolymer, 10-35 parts ACM, 3-10 parts ethylene-acrylate-maleic anhydride terpolymer,
5-15 parts microencapsulated powder oil, 60-110 parts Halogenless composite fire retardant, 0.5-2 parts lubricant, 1.5-4.5 parts plasticizer, 1-2.5
Part sensitization crosslinking agent, 1.5-3.5 parts composite antioxidant are put into successively to be kneaded 5 ~ 10 minutes in double roller banbury, then will be above-mentioned mixed
Compound is extruded after forced feed with extruder in 130 ~ 170 DEG C of temperature range, tie rod, water cooling, air-cooled, pelletizing,
Obtain material master batch；
B）By master batch made from step A, using the extruder with material automatic baking device in 125~160 DEG C of temperature range
Extruding pipe material；
C）Aforementioned tubes are crosslinked by electron accelerator irradiation, irradiation dose is 8~15Mrad；
D）Tubing after above-mentioned irradiation is subjected to 2~3 times of expansion in 120~160 DEG C of temperature range with expansion device, finally
Cooling and shaping, obtain high temperature tear-proof Heat-shrinkable bus-bar protective sleeve.
The present invention has the following advantages that compared with prior art and effect：
1. high temperature tear-proof Heat-shrinkable bus-bar protective sleeve of the present invention has excellent high temperature lear energy, cut to its end
In the case of 10mm breaches, progress electric current is 3150A, the temperature rise test that the time is 8 hours, temperature rise >=120 DEG C, the actual table of copper bar
When face temperature is more than 150 DEG C, cracking phenomena will not also occur, and breach length does not increase.
2. high temperature tear-proof Heat-shrinkable bus-bar protective sleeve of the present invention has excellent fire resistance, fire resistance can lead to
Cross State Grid's professional standard《DL/T 1059-2007 power equipment bus heat-shrink tubes》In requirement：Oxygen index (OI) >=30.
Embodiment
To describe the technology contents of the present invention, formula rate, the objects and the effects in detail, below in conjunction with embodiment
It is explained in detail.
The several specific embodiments for preparing heat-shrink tube are described below, and unless otherwise indicated, all numbers are by weight：
Embodiment 1
By 20 parts of LLDPEs（LLDPE）, 60 parts of ethylene-octene block copolymers（The g/10min of melt index 1,
The g/cm of density 0.8773）, 15 parts of ACMs（Mooney viscosity is 22ML（1+4）@100℃）, 5 parts of ethylene-acrylic acids
Ester-maleic anhydride terpolymer, 10 parts of microencapsulated powder oils, 95 parts of Halogenless composite fire retardants（Including 40 parts of nano-calcium carbonates,
40 parts of magnesium hydroxides, 15 parts of MCAs（MCA））, 1.5 parts of zinc stearates, 2.5 parts of epoxidized soybean oils, 1.5 part three
TRIM（TMPTMA）, 3 parts of composite antioxidants（Including 2 parts of antioxidant 1010s（Four β-（3,5- bis-
Tert-butyl-hydroxy phenyl）Propionic acid ］ pentaerythritol ester）, 1 part of irgasfos 168（Three（2,4- di-tert-butyl-phenyls）Phosphorous acid
Ester））Put into double roller banbury and be kneaded 5 ~ 10 minutes successively, said mixture is then used into twin-screw extrusion after forced feed
Machine is extruded in 130 ~ 170 DEG C of temperature range, tie rod, water cooling, air-cooled, pelletizing, obtain material master batch；By above-mentioned material
Master batch uses the extruding pipe material in 125~160 DEG C of temperature range of the single screw extrusion machine with material automatic baking device；Then will
Aforementioned tubes are crosslinked by electron accelerator irradiation, and irradiation dose is 8~15Mrad；Finally the tubing after above-mentioned irradiation is existed
2~3 times of expansion is carried out with expansion device in 120~160 DEG C of temperature range, cooling and shaping, obtains a kind of high temperature tear-proof heat
Shrink bus-bar protective sleeve.The key performance of above-mentioned high temperature tear-proof busbar heat-shrinkable T bush product is tested, as a result such as table 1
It is shown：
Table 1：The heat-shrink tube key performance test result of embodiment 1
| Sequence number | Test event | Index request | Test result |
| 1 | Tensile strength | ≥8MPa | 11.92MPa |
| 2 | Elongation at break | ≥300% | 459% |
| 3 | Temperature rise test（3150A×8h） | Without cracking, former incision length（10mm）Do not increase | Pass through |
| 4 | Oxygen index (OI) | ≥30 | Pass through |
Embodiment 2
By 25 parts of LLDPEs（LLDPE）, 30 parts of ethylene-octene block copolymers（The g/ of melt index 0.5
10min, the g/cm3 of density 0.869）, 38 parts of ACMs（Mooney viscosity is 29ML（1+4）@100℃）, 7 parts of ethene-the third
Olefin(e) acid ester-maleic anhydride terpolymer, 8 parts of microencapsulated powder oils, 100 parts of Halogenless composite fire retardants（Including 30 parts of nano-sized carbons
Sour calcium, 50 parts of aluminium hydroxides, 20 parts of MCAs（MCA））, 1.5 parts of zinc stearates, 3 parts of terephthalic acid (TPA)s two it is pungent
Fat（DOTP）, 1.5 parts of trimethylol-propane trimethacrylates（TMPTMA）, 2.5 parts of composite antioxidants（It is anti-including 1.5 parts
Oxygen agent 1076（3-（3,5 di-tert-butyl-hydroxy phenyls）Propionic acid n-octadecane alcohol ester）, 1 part of antioxidant 626（It is double（2,4- bis- uncles
Butyl phenyl）Pentaerythritol diphosphites））Put into double roller banbury and be kneaded 5 ~ 10 minutes successively, then by above-mentioned mixing
Thing is extruded after forced feed with double screw extruder in 130 ~ 170 DEG C of temperature range, tie rod, water cooling, it is air-cooled, cut
Grain, obtains material master batch；Above-mentioned material master batch is used into the single screw extrusion machine with material automatic baking device at 125~160 DEG C
Temperature range in extruding pipe material；Then by aforementioned tubes by electron accelerator irradiation be crosslinked, irradiation dose be 8~
15Mrad；The tubing after above-mentioned irradiation is finally subjected to expansion 2~3 in 120~160 DEG C of temperature range with expansion device
Times, cooling and shaping, obtain a kind of high temperature tear-proof Heat-shrinkable bus-bar protective sleeve.To above-mentioned high temperature tear-proof busbar heat-shrinkable T bush
The key performance of product is tested, as a result as shown in table 2：
Table 2：The heat-shrink tube key performance test result of embodiment 2
| Sequence number | Test event | Index request | Test result |
| 1 | Tensile strength | ≥8MPa | 10.85MPa |
| 2 | Elongation at break | ≥300% | 481% |
| 3 | Temperature rise test（3150A×8h） | Without cracking, former incision length（10mm）Do not increase | Pass through |
| 4 | Oxygen index (OI) | ≥30 | Pass through |
Embodiment 3
By 40 parts of high density polyethylene (HDPE)s（HDPE）, 30 parts of ethylene-octene block copolymers（The g/10min of melt index 5, density
0.887 g/cm3）, 25 parts of ACMs（Mooney viscosity is 18.5ML（1+4）@100℃）, 5 parts of ethylene-acrylates-
Maleic anhydride terpolymer, 12 parts of microencapsulated powder oils, 87 parts of Halogenless composite fire retardants（Including 40 parts of nano-calcium carbonates, 30
Part aluminium hydroxide, 17 parts of MCAs（MCA））, 1.5 parts of N ' N- ethylene bis stearamides（EBS）, 3 parts to benzene two
Formic acid dibutyl ester（DOTP）, 2 parts of trimethylol-propane trimethacrylates（TAIC）, 3 parts of composite antioxidants（Including 1.5 parts
Antioxidant 1076（3-（3,5 di-tert-butyl-hydroxy phenyls）Propionic acid n-octadecane alcohol ester）, 1.5 parts of antioxidant DSTP（Thio two
Propionic acid distearyl alcohol ester））Put into double roller banbury and be kneaded 5 ~ 10 minutes successively, then by said mixture after forced feed
Extruded with double screw extruder in 130 ~ 170 DEG C of temperature range, tie rod, water cooling, air-cooled, pelletizing, obtain material mother
Grain；The single screw extrusion machine with material automatic baking device is used to be squeezed in 125~160 DEG C of temperature range above-mentioned material master batch
Go out tubing；Then aforementioned tubes are crosslinked by electron accelerator irradiation, irradiation dose is 8~15Mrad；Finally by above-mentioned spoke
Tubing according to after carries out 2~3 times of expansion in 120~160 DEG C of temperature range with expansion device, cooling and shaping, obtains one kind
High temperature tear-proof Heat-shrinkable bus-bar protective sleeve.The key performance of above-mentioned high temperature tear-proof busbar heat-shrinkable T bush product is surveyed
Examination, as a result as shown in table 3：
Table 3：The heat-shrink tube key performance test result of embodiment 3
| Sequence number | Test event | Index request | Test result |
| 1 | Tensile strength | ≥8MPa | 12.23MPa |
| 2 | Elongation at break | ≥300% | 396% |
| 3 | Temperature rise test（3150A×8h） | Without cracking, former incision length（10mm）Do not increase | Pass through |
| 4 | Oxygen index (OI) | ≥30 | Pass through |
The high temperature tear-proof busbar of above-mentioned each implementation example offer is provided according to the performance test results of 1 ~ table of table 3
Thermal contraction casing tube made from the formula and its production method of heat-shrink tube, its mechanical performance and fire resistance（Oxygen index (OI)）Meet country
Power industry standard《DL/T 1059-2007 power equipment bus heat-shrink tubes》It is required that：Tensile strength >=8MPa, extension at break
Rate >=300%, oxygen index (OI) >=30；Other more important point is, in the case of it otch be present, in galvanization 3150A,
After 8 hours, cracking phenomena still will not occur for heat-shrinkable T bush, and former incision length will not also increase, for protection regulator cubicle
It is powered safe to use, plays extremely beneficial insulating protection effect.
The invention is not limited in above-mentioned embodiment, those skilled in the art can also make a variety of accordingly
Change, but any be equal or similar change should all be covered within the scope of the claims with of the invention.
Claims (12)
- A kind of 1. high temperature tear-proof pyrocondensation bus-bar protective sleeve material prescription, it is characterised in that including following composition, by weight, Contain：Polyethylene 20-50 parts；Ethylene-octene block copolymer 30-80 parts；ACM 10-35 parts；Ethylene-acrylate-maleic anhydride terpolymer 3-10 parts；Microencapsulated powder oil 5-15 parts；Halogenless composite fire retardant 60-110 parts；Lubricant 0.5-2 parts；Plasticizer 1.5-4.5 parts；It is sensitized crosslinking agent 1-2.5 parts；Composite antioxidant 1.5-3.5 parts.
- 2. high temperature tear-proof pyrocondensation bus-bar protective sleeve material prescription as claimed in claim 1, it is characterised in that the poly- second Alkene is LLDPE（LLDPE）, high density polyethylene (HDPE)（HDPE）One or both of.
- 3. high temperature tear-proof pyrocondensation bus-bar protective sleeve material prescription as claimed in claim 1, it is characterised in that the second Alkene-octene block copolymer（OBCs）Melt index be 0.5 ~ 5g/10min, density is 0.866 ~ 0.887g/cm3。
- 4. high temperature tear-proof pyrocondensation bus-bar protective sleeve material prescription as claimed in claim 1, it is characterised in that the propylene The Mooney viscosity of acid esters rubber is 16.5 ~ 31ML（1+4）@100℃.
- 5. high temperature tear-proof pyrocondensation bus-bar protective sleeve material prescription as claimed in claim 1, it is characterised in that the second The butyl acrylate content of alkene-acrylate-maleic anhydride terpolymer be 6% ~ 10%, maleic anhydride content be 1.3% ~ 3.1%, melt index is 2 ~ 5g/10min.
- 6. high temperature tear-proof pyrocondensation bus-bar protective sleeve material prescription as claimed in claim 1, it is characterised in that micro- glue Encapsulated red phosphorus is red mobility red phosphorus powder of the surface Jing Guo secondary cladding, and red phosphorus content is not less than 85%, particle diameter 5-10 μ M, the g/cm of relative density 2.13, the g/cm of bulk density 0.63。
- 7. high temperature tear-proof pyrocondensation bus-bar protective sleeve material prescription as claimed in claim 1, it is characterised in that the Halogen Composite flame-retardant agent is nano-calcium carbonate, magnesium hydroxide, MCA（MCA）Or the one or more in aluminium hydroxide Compounded.
- 8. high temperature tear-proof pyrocondensation bus-bar protective sleeve material prescription as claimed in claim 1, it is characterised in that the lubrication Agent is zinc stearate or N ' N- ethylene bis stearamides（EBS）One or both of.
- 9. high temperature tear-proof pyrocondensation bus-bar protective sleeve material prescription as claimed in claim 1, it is characterised in that the plasticising Agent is epoxidized soybean oil or terephthalic acid (TPA) dibutyl ester（DOTP）.
- 10. the high temperature tear-proof pyrocondensation bus-bar protective sleeve material prescription as described in claim 1, it is characterised in that described quick Change crosslinking agent is trimethylol-propane trimethacrylate（TMPTMA）, Triallyl isocyanurate（TAIC）In one kind Or two kinds.
- 11. high temperature tear-proof pyrocondensation bus-bar protective sleeve material prescription as claimed in claim 1, it is characterised in that described anti- Oxygen agent is formed by Hinered phenols primary antioxidant and phosphorous acid esters auxiliary antioxidant compounding, or by Hinered phenols primary antioxidant Formed with thio esters auxiliary antioxidant compounding.
- 12. a kind of production method of high temperature tear-proof Heat-shrinkable bus-bar protective sleeve, it is characterised in that including step：A）According to the high temperature tear-proof pyrocondensation bus-bar protective sleeve material prescription described in claim 1, by 20-50 parts polyethylene, 30-80 part ethylene-octenes block copolymer, 10-35 parts ACM, 3-10 parts ethylene-acrylate-maleic anhydride three Membered copolymer, 5-15 parts microencapsulated powder oil, 60-110 parts Halogenless composite fire retardant, 0.5-2 parts lubricant, 1.5-4.5 parts increase Modeling agent, 1-2.5 parts sensitization crosslinking agent, 1.5-3.5 parts composite antioxidant are put into successively is kneaded 5 ~ 10 minutes in double roller banbury, so Said mixture is extruded after forced feed with extruder in 130 ~ 170 DEG C of temperature range afterwards, tie rod, water cooling, Air-cooled, pelletizing, obtain material master batch；B）By master batch made from step A, using the extruder with material automatic baking device in 125~160 DEG C of temperature range Extruding pipe material；C）Aforementioned tubes are crosslinked by electron accelerator irradiation, irradiation dose is 8~15Mrad；D）Tubing after above-mentioned irradiation is subjected to 2~3 times of expansion in 120~160 DEG C of temperature range with expansion device, finally Cooling and shaping, obtain high temperature tear-proof Heat-shrinkable bus-bar protective sleeve.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108948635A (en) * | 2018-07-26 | 2018-12-07 | 合肥市大卓电力有限责任公司 | Heat-proof aging protection type heat-shrink tube and its application |
| CN109054277A (en) * | 2018-07-26 | 2018-12-21 | 合肥市大卓电力有限责任公司 | A kind of preparation method of fire-retardant high pressure resistant heat-shrink tube |
| CN109096678A (en) * | 2018-07-26 | 2018-12-28 | 合肥市大卓电力有限责任公司 | A kind of compound heat-shrink tube of heat shock resistance and its application |
| CN109181202A (en) * | 2018-07-26 | 2019-01-11 | 合肥市大卓电力有限责任公司 | A kind of electric power New insulated heat-shrink tube |
| CN110028719A (en) * | 2019-03-25 | 2019-07-19 | 大连联合高分子材料有限公司 | A kind of high temperature resistant clip cracking halogen-free non-red-phosphorus flame-retardant bus bar heat-shrinkable T bush and preparation method thereof |
| CN111410784A (en) * | 2020-04-03 | 2020-07-14 | 江苏鼎尚电子材料股份有限公司 | Heat-shrinkable sleeve free of foaming when heated and preparation method thereof |
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| CN103724793A (en) * | 2014-01-10 | 2014-04-16 | 长园电子（集团）有限公司 | Heat-shrinkable bus-bar protective sleeve and preparation method thereof |
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Effective date of registration: 20210623 Address after: 518000 Wall Industrial Park, Lanjing North Road, Longtian street, Pingshan District, Shenzhen City, Guangdong Province Applicant after: Shenzhen Woer Heat-shrinkable Material Co.,Ltd. Applicant after: SHENZHEN WOER NEW ENERGY ELECTRICAL TECHNOLOGY Co.,Ltd. Applicant after: CHANGZHOU WOER HEAT-SHRINKABLE MATERIAL Co.,Ltd. Address before: 518118 Vol Industrial Park, Lanjingbei Road, Pingshan District, Shenzhen City, Guangdong Province Applicant before: Shenzhen Woer Heat-shrinkable Material Co.,Ltd. Applicant before: SHENZHEN WOER NEW ENERGY ELECTRICAL TECHNOLOGY Co.,Ltd. Applicant before: SHENZHEN WOER SPECIAL CABLE Co.,Ltd. Applicant before: CHANGZHOU WOER HEAT-SHRINKABLE MATERIAL Co.,Ltd. Applicant before: LTK ELECTRIC WIRE (HUIZHOU) Ltd. Applicant before: HUIZHOU LTK ELECTRONIC CABLE Co.,Ltd. |
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