CN105001503A - High-extrusion-rate heat-shrinkable tube and production method thereof - Google Patents
High-extrusion-rate heat-shrinkable tube and production method thereof Download PDFInfo
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- 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
- C08L23/08—Copolymers of ethene
- C08L23/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
- C08L23/0853—Vinylacetate
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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
- C08L23/08—Copolymers of ethene
- C08L23/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
- C08L23/0869—Acids or derivatives thereof
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/08—Copolymers of ethene
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- 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
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
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- 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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- 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
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- 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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- 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
- C08L2207/066—LDPE (radical process)
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- C08L2310/00—Masterbatches
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Abstract
The invention discloses a high-extrusion-rate heat-shrinkable tube. The preparation materials of the high-extrusion-rate heat-shrinkable tube comprise, by weight, 100 parts of vinyl polymers, 0-70 parts of a fire retardant, 0-60 parts of filler, 0.1-5 parts of a lubricant, 0.1-3 parts of a flux dispersing agent, 0.1-10 parts of an antioxidant, 0-3 parts of a crosslinking accelerator and 0-10 parts of color master batch. The high-extrusion-rate heat-shrinkable tube has the advantages that not only is the extrusion rate high, but also the extrusion is stable in high speed, and good machining and use performances are also achieved.
Description
Technical field
The present invention relates to a kind of heat-shrinkable T bush being mainly used in the insulation protection of electric wire joint, busbar line etc., particularly relate to a kind of high rate of extrusion heat-shrinkable T bush and production method thereof.
Background technology
Thermal contraction casing tube from birth till now, experienced by continuous development, has now been widely used in the fields such as Aeronautics and Astronautics, boats and ships, locomotive, communication, chemical industry, household electrical appliances.Along with the spring tide of national economy transition, all trades and professions such as electronics, electric power, household electrical appliances, automobile will welcome more wide market, and this has also driven the further increase of heat-shrinkable T bush demand.In the face of competition both domestic and external, be market one of the key factor that enterprise contends for markets that provides high-quality heat-shrinkable T bush to become rapidly.Heat-shrinkable T bush is modified polyolefin extrusion moulding, and the speed of extrusion moulding speed have impact on the friendship phase of product to a great extent, and slow rate of extrusion adds production cost simultaneously, reduces the efficiency of employee.And improve merely rate of extrusion, often cause product apparent bad, as produce shark skin, apparent coarse, emit the quality problem such as ring.This is just badly in need of a kind of heat-shrinkable T bush being applicable to quick extrusion moulding of development, ensures heat-shrinkable T bush properties simultaneously.
Summary of the invention
The object of the present invention is to provide a kind of extrusion moulding speed is high, physical electric performance is excellent, easy to use heat-shrinkable T bush and production method thereof, solve when heat-shrinkable T bush rate of extrusion improves and can cause extruding difficulty, the apparent bad problem of product.
For reaching above-mentioned purpose, heat-shrinkable T bush provided by the present invention prepare material by weight, contain:
Vinyl polymer 100 parts;
Fire retardant 0-70 part;
Weighting agent 0-60 part;
Lubricant 0.1-5 part;
To flux dispersion agent 0.1-3 part;
Oxidation inhibitor 0.1-10 part;
Crosslinking accelerator 0-3 part;
Masterbatch 0-10 part.
Preferably, described vinyl polymer is that one in Low Density Polyethylene, medium-density polyethylene, high density polyethylene(HDPE), ethylene-vinyl acetate copolymer, ethylene-octene copolymer, ethylene-methyl acrylate copolymer, ethylene-butyl acrylate copolymer, ethylene-propylene copolymer is several.
Preferably, described fire retardant by red phosphorus type fire retardant, magnesium hydroxide is composite forms.
Preferably, described red phosphorus type fire retardant is one or both combination of following fire retardant: the red phosphorus powder of red phosphorus content 70%-99%, the microcapsule red phosphorus of red phosphorus content 30%.
Preferably, described dispersion agent of fluxing is following a kind of or several combination: the copolymer of 400-4000 object vinylidene, tetrafluoroethylene, R 1216 or terpolymer, the multipolymer of 400-4000 object vinylidene, tetrafluoroethylene, R 1216 and ethene or propylene.
Preferably, described lubricant is following a kind of or several combination: the silicone master batch of stearic acid, Zinic stearas, polyethylene wax, content of siloxane 30%-60%.
Preferably, described weighting agent is one or more combination following: carbonate based compounds, silicon oxide and silicate compound, sulfate-based compound, glass powder.
Preferably, described oxidation inhibitor forms by Hinered phenols primary antioxidant with by phosphorous acid esters auxiliary antioxidant is composite.
Preferably, described Hinered phenols antioxidant is following a kind of or several combination: four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester, β-(3,5-di-tert-butyl-hydroxy phenyl) the positive octadecanol ester of propionic acid, 1,3,5-trimethylammonium-2,4,6-(3,5-di-t-butyl-4-hydroxyphenylmethyl) benzene, 2,6 ditertiary butyl p cresol.
Preferably, described is following a kind of or several combination by phosphorous acid esters auxiliary antioxidant: three (2.4-di-tert-butyl-phenyl) phosphorous acid ester, two (2,4-di-tert-butyl-phenyl) pentaerythritol diphosphites, four (2,4-di-t-butyl eight alkoxyl group-4,4-xenyl) phosphoric acid ester.
Preferably; described crosslinking accelerator is following a kind of or several combination: trimethylolpropane tris (methyl) acrylate, Viscoat 295, tetramethylol methane tetraacrylate, triallyl isocyanate, 1,3 butylene glycol dimethacrylate;
The present invention also provides a kind of preparation method of high rate of extrusion heat-shrinkable T bush, comprises the steps:
Step 1: the material of preparing of above-mentioned high rate of extrusion heat-shrinkable T bush is mixed by formula rate;
Step 2: by the batch mixing of step 1 through mixer mixing granulation and twin screw extruder mixing granulator, then uses single screw extrusion machine extrusion moulding tubing.
Step 3: the rumbatron of the above energy of tubing 4MeV carries out irradiation to the tubing in step 2, the tubing after cross-linking radiation expands 1.5-4 doubly at 80-140 DEG C.
Advantageous Effects of the present invention:
Not only rate of extrusion is high for high rate of extrusion heat-shrinkable T bush of the present invention, and extrudes stable at the high velocities, also has well processed and use properties.
Embodiment
By describing technology contents of the present invention, formula rate in detail, being realized object and effect, be explained in detail below in conjunction with embodiment.
Heat-shrinkable T bush provided by the present invention prepare material by weight, contain:
Vinyl polymer 100 parts;
Fire retardant 0-70 part;
Weighting agent 0-60 part;
Lubricant 0.1-5 part;
To flux dispersion agent 0.1-3 part;
Oxidation inhibitor 0.1-10 part;
Crosslinking accelerator 0-3 part;
Masterbatch 0-10 part.
Preferably, described vinyl polymer is that one in Low Density Polyethylene, medium-density polyethylene, high density polyethylene(HDPE), ethylene-vinyl acetate copolymer, ethylene-octene copolymer, ethylene-methyl acrylate copolymer, ethylene-butyl acrylate copolymer, ethylene-propylene copolymer is several.
Preferably, described fire retardant by red phosphorus type fire retardant, magnesium hydroxide is composite forms.
Preferably, described red phosphorus type fire retardant is one or both combination of following fire retardant: the red phosphorus powder of red phosphorus content 70%-99%, the microcapsule red phosphorus of red phosphorus content 30%.
Preferably, described dispersion agent of fluxing is following a kind of or several combination: the copolymer of 400-4000 object vinylidene, tetrafluoroethylene, R 1216 or terpolymer, the multipolymer of 400-4000 object vinylidene, tetrafluoroethylene, R 1216 and ethene or propylene.
Preferably, described lubricant is following a kind of or several combination: the silicone master batch of stearic acid, Zinic stearas, polyethylene wax, content of siloxane 30%-60%.
Preferably, described weighting agent is one or more combination following: carbonate based compounds, silicon oxide and silicate compound, sulfate-based compound, glass powder.
Preferably, described oxidation inhibitor forms by Hinered phenols primary antioxidant with by phosphorous acid esters auxiliary antioxidant is composite.
Preferably, described Hinered phenols antioxidant is following a kind of or several combination: four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester, β-(3,5-di-tert-butyl-hydroxy phenyl) the positive octadecanol ester of propionic acid, 1,3,5-trimethylammonium-2,4,6-(3,5-di-t-butyl-4-hydroxyphenylmethyl) benzene, 2,6 ditertiary butyl p cresol.
Preferably, described is following a kind of or several combination by phosphorous acid esters auxiliary antioxidant: three (2.4-di-tert-butyl-phenyl) phosphorous acid ester, two (2,4-di-tert-butyl-phenyl) pentaerythritol diphosphites, four (2,4-di-t-butyl eight alkoxyl group-4,4-xenyl) phosphoric acid ester.
Preferably; described crosslinking accelerator is following a kind of or several combination: trimethylolpropane tris (methyl) acrylate, Viscoat 295, tetramethylol methane tetraacrylate, triallyl isocyanate, 1,3 butylene glycol dimethacrylate;
The present invention also provides a kind of preparation method of high rate of extrusion heat-shrinkable T bush, comprises the steps:
Step 1: the material of preparing of above-mentioned high rate of extrusion heat-shrinkable T bush is mixed by formula rate;
Step 2: by the batch mixing of step 1 through mixer mixing granulation and twin screw extruder mixing granulator, then uses single screw extrusion machine extrusion moulding tubing.
Step 3: the rumbatron of the above energy of tubing 4MeV carries out irradiation to the tubing in step 2, the tubing after cross-linking radiation expands 1.5-4 doubly at 80-140 DEG C.
Below describe present embodiment and produce several specific embodiments of heat-shrinkable T bush, unless otherwise indicated, all numbers all by weight:
Embodiment 1
Following component is taken according to weight fraction:
Above-mentioned materials adopts mixer mixing granulation, banburying temperature 90-130 DEG C, banburying time 10-20min.By banburying institute granulation material again through the mixing 1-3 time of twin screw extruder, carry out granulation packaging.
Then the single screw extrusion machine of length-to-diameter ratio 25:1 is adopted to extrude heat-shrink tube, internal diameter 32mm, wall thickness 2.8mm, extrusion temperature 90-130 DEG C.
The rumbatron of the above energy of extruding pipe material 4MeV carries out irradiation, and the tubing after cross-linking radiation expands 1.5-4 doubly at 80-140 DEG C.
Table 1 is the performance perameter table that embodiment 1 and comparative example 1 are mainly tested.
Table 1
| Performance | Embodiment 1 | Comparative example 1 |
| Rate of extrusion/Hz | 21 | 39 |
| Limiting oxygen index(LOI)/% | 32 | 32 |
| Tensile strength/MPa | 13.7 | 13.5 |
| Elongation at break/% | 458 | 473 |
| Tensile strength (130 DEG C, 168h thermal ageing)/MPa | 12.4 | 12.2 |
| Elongation at break (130 DEG C, 168h thermal ageing)/% | 397 | 418 |
| 160 DEG C, 4h thermal shocking | Pass through | Pass through |
Embodiment 2
Following component is taken according to weight fraction:
Above-mentioned materials adopts mixer mixing granulation, banburying temperature 90-130 DEG C, banburying time 10-20min.By banburying institute granulation material again through the mixing 1-3 time of twin screw extruder, carry out granulation packaging.
Then the single screw extrusion machine of length-to-diameter ratio 25:1 is adopted to extrude heat-shrink tube, internal diameter 75mm, wall thickness 1.5mm, extrusion temperature 90-130 DEG C.
The rumbatron of the above energy of extruding pipe material 4MeV carries out irradiation, and the tubing after cross-linking radiation expands 1.5-4 doubly at 80-140 DEG C.
Table 2 is the performance perameter table that embodiment 2 and comparative example 2 are mainly tested.
Table 2
| Performance | Embodiment 2 | Comparative example 2 |
| Rate of extrusion/Hz | 25 | 42 |
| Limiting oxygen index(LOI)/% | 33.6 | 33 |
| Tensile strength/MPa | 12.5 | 12.7 |
| Elongation at break/% | 486 | 470 |
| Tensile strength (130 DEG C, 168h thermal ageing)/MPa | 11.3 | 10.9 |
| Elongation at break (130 DEG C, 168h thermal ageing)/% | 410 | 398 |
| 160 DEG C, 4h thermal shocking | Pass through | Pass through |
Embodiment 3
Following component is taken according to weight fraction:
Above-mentioned materials adopts mixer mixing granulation, banburying temperature 90-130 DEG C, banburying time 10-20min.By banburying institute granulation material again through the mixing 1-3 time of twin screw extruder, carry out granulation packaging.
Then the single screw extrusion machine of length-to-diameter ratio 25:1 is adopted to extrude heat-shrink tube, internal diameter 32mm, wall thickness 4.5mm, extrusion temperature 90-130 DEG C.
The rumbatron of the above energy of extruding pipe material 4MeV carries out irradiation, and the tubing after cross-linking radiation expands 1.5-4 doubly at 80-140 DEG C.
Table 3 is the performance perameter table that embodiment 3 and comparative example 3 are mainly tested.
Table 3
| Performance | Embodiment 3 | Comparative example 3 |
| Rate of extrusion/Hz | 23 | 40 |
| Limiting oxygen index(LOI)/% | 31.3 | 30.6 |
| Tensile strength/MPa | 14.2 | 13.8 |
| Elongation at break/% | 558 | 586 |
| Tensile strength (130 DEG C, 168h thermal ageing)/MPa | 12.1 | 12.5 |
| Elongation at break (130 DEG C, 168h thermal ageing)/% | 459 | 500 |
| 160 DEG C, 4h thermal shocking | Pass through | Pass through |
Embodiment 4
Following component is taken according to weight fraction:
Above-mentioned materials adopts mixer mixing granulation, banburying temperature 90-130 DEG C, banburying time 10-20min.By banburying institute granulation material again through the mixing 1-3 time of twin screw extruder, carry out granulation packaging.
Then the single screw extrusion machine of length-to-diameter ratio 25:1 is adopted to extrude heat-shrink tube, internal diameter 60mm, wall thickness 2.8mm, extrusion temperature 90-130 DEG C.
The rumbatron of the above energy of extruding pipe material 4MeV carries out irradiation, and the tubing after cross-linking radiation expands 1.5-4 doubly at 80-140 DEG C.
Table 4 is the performance perameter table that embodiment 4 and comparative example 4 are mainly tested.
Table 4
| Performance | Example | Comparative example |
| Rate of extrusion/Hz | 21 | 35 |
| Limiting oxygen index(LOI)/% | 30.7 | 31 |
| Tensile strength/MPa | 15.7 | 14.6 |
| Elongation at break/% | 476 | 480 |
| Tensile strength (130 DEG C, 168h thermal ageing)/MPa | 13.7 | 13 |
| Elongation at break (130 DEG C, 168h thermal ageing)/% | 411 | 425 |
| 160 DEG C, 4h thermal shocking | Pass through | Pass through |
Embodiment 5
Following component is taken according to weight fraction:
Above-mentioned materials adopts mixer mixing granulation, banburying temperature 90-130 DEG C, banburying time 10-20min.By banburying institute granulation material again through the mixing 1-3 time of twin screw extruder, carry out granulation packaging.
Then the single screw extrusion machine of length-to-diameter ratio 25:1 is adopted to extrude heat-shrink tube, internal diameter 48mm, wall thickness 2.8mm, extrusion temperature 90-130 DEG C.
The rumbatron of the above energy of extruding pipe material 4MeV carries out irradiation, and the tubing after cross-linking radiation expands 1.5-4 doubly at 80-140 DEG C.
Table 5 is the performance perameter table that embodiment 5 and comparative example 5 are mainly tested.
Table 5
| Performance | Embodiment 5 | Comparative example 5 |
| Rate of extrusion/Hz | 23 | 36 |
| Limiting oxygen index(LOI)/% | 31.2 | 30 |
| Tensile strength/MPa | 13.7 | 12.8 |
| Elongation at break/% | 504 | 510 |
| Tensile strength (130 DEG C, 168h thermal ageing)/MPa | 10.9 | 11 |
| Elongation at break (130 DEG C, 168h thermal ageing)/% | 436 | 463 |
| 160 DEG C, 4h thermal shocking | Pass through | Pass through |
Embodiment 6
Following component is taken according to weight fraction:
Above-mentioned materials adopts mixer mixing granulation, banburying temperature 90-130 DEG C, banburying time 10-20min.By banburying institute granulation material again through the mixing 1-3 time of twin screw extruder, carry out granulation packaging.
Then the single screw extrusion machine of length-to-diameter ratio 25:1 is adopted to extrude heat-shrink tube, internal diameter 45mm, wall thickness 2.1mm, extrusion temperature 90-130 DEG C.
The rumbatron of the above energy of extruding pipe material 4MeV carries out irradiation, and the tubing after cross-linking radiation expands 1.5-4 doubly at 80-140 DEG C.
Table 6 is the performance perameter table that embodiment 6 and comparative example 6 are mainly tested.
Table 6
| Performance | Embodiment 6 | Comparative example 6 |
| Rate of extrusion/Hz | 20 | 31 |
| Limiting oxygen index(LOI)/% | Do not consider | Do not consider |
| Tensile strength/MPa | 16.5 | 15.9 |
| Elongation at break/% | 480 | 493 |
| Tensile strength (130 DEG C, 168h thermal ageing)/MPa | 15.1 | 15.3 |
| Elongation at break (130 DEG C, 168h thermal ageing)/% | 413 | 437 |
| 160 DEG C, 4h thermal shocking | Pass through | Pass through |
Embodiment 7
Following component is taken according to weight fraction:
Above-mentioned materials adopts mixer mixing granulation, banburying temperature 90-130 DEG C, banburying time 10-20min.By banburying institute granulation material again through the mixing 1-3 time of twin screw extruder, carry out granulation packaging.
Then the single screw extrusion machine of length-to-diameter ratio 25:1 is adopted to extrude heat-shrink tube, internal diameter 89.2mm, wall thickness 2.1mm, extrusion temperature 90-130 DEG C.
The rumbatron of the above energy of extruding pipe material 4MeV carries out irradiation, and the tubing after cross-linking radiation expands 1.5-4 doubly at 80-140 DEG C.
Table 7 is the performance perameter table that embodiment 7 and comparative example 7 are mainly tested.
Table 7
| Performance | Embodiment 7 | Comparative example 7 |
| Rate of extrusion/Hz | 23 | 32 |
| Limiting oxygen index(LOI)/% | Do not consider | Do not consider |
| Tensile strength/MPa | 14.8 | 15.0 |
| Elongation at break/% | 470 | 490 |
| Tensile strength (130 DEG C, 168h thermal ageing)/MPa | 13.5 | 13.7 |
| Elongation at break (130 DEG C, 168h thermal ageing)/% | 428 | 406 |
| 160 DEG C, 4h thermal shocking | Pass through | Pass through |
By embodiment 1 and embodiment 7 and comparative example corresponding separately known, be added with the rate of extrusion of the heat-shrinkable T bush of dispersion agent of fluxing apparently higher than the heat-shrinkable T bush not having to add dispersion agent of fluxing, and extrude stable at the high velocities, there is good processing and use properties.
The present invention is not limited to above-mentioned embodiment, and those skilled in the art also can make multiple change accordingly, but to be anyly equal to the present invention or similar change all should be encompassed in the scope of the claims in the present invention.
Claims (12)
1. a high rate of extrusion heat-shrinkable T bush, is characterized in that, described heat-shrinkable T bush prepare material by weight, contain:
Vinyl polymer 100 parts;
Fire retardant 0-70 part;
Weighting agent 0-60 part;
Lubricant 0.1-5 part;
To flux dispersion agent 0.1-3 part;
Oxidation inhibitor 0.1-10 part;
Crosslinking accelerator 0-3 part;
Masterbatch 0-10 part.
2. high rate of extrusion heat-shrinkable T bush according to claim 1, is characterized in that: described vinyl polymer is that the one in Low Density Polyethylene, medium-density polyethylene, high density polyethylene(HDPE), ethylene-vinyl acetate copolymer, ethylene-octene copolymer, ethylene-methyl acrylate copolymer, ethylene-butyl acrylate copolymer, ethylene-propylene copolymer is several.
3. high rate of extrusion heat-shrinkable T bush according to claim 1, is characterized in that: described fire retardant by red phosphorus type fire retardant, magnesium hydroxide is composite forms.
4. high rate of extrusion heat-shrinkable T bush according to claim 2, is characterized in that: described red phosphorus type fire retardant is one or both combination of following fire retardant: the red phosphorus powder of red phosphorus content 70%-99%, the microcapsule red phosphorus of red phosphorus content 30%.
5. high rate of extrusion heat-shrinkable T bush according to claim 1, it is characterized in that: described in dispersion agent of fluxing be following a kind of or several combination: the copolymer of 400-4000 object vinylidene, tetrafluoroethylene, R 1216 or terpolymer, the multipolymer of 400-4000 object vinylidene, tetrafluoroethylene, R 1216 and ethene or propylene.
6. high rate of extrusion heat-shrinkable T bush according to claim 1, is characterized in that: described lubricant is following a kind of or several combination: the silicone master batch of stearic acid, Zinic stearas, polyethylene wax, content of siloxane 30%-60%.
7. high rate of extrusion heat-shrinkable T bush according to claim 1, is characterized in that: described weighting agent is one or more combination following: carbonate based compounds, silicon oxide and silicate compound, sulfate-based compound, glass powder.
8. high rate of extrusion heat-shrinkable T bush according to claim 1, is characterized in that: described oxidation inhibitor forms by Hinered phenols primary antioxidant with by phosphorous acid esters auxiliary antioxidant is composite.
9. high rate of extrusion heat-shrinkable T bush according to claim 8, it is characterized in that: described Hinered phenols antioxidant is following a kind of or several combination: four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester, β-(3,5-di-tert-butyl-hydroxy phenyl) the positive octadecanol ester of propionic acid, 1,3,5-trimethylammonium-2,4,6-(3,5-di-t-butyl-4-hydroxyphenylmethyl) benzene, 2,6 ditertiary butyl p cresol.
10. high rate of extrusion heat-shrinkable T bush according to claim 8, it is characterized in that: described is following a kind of or several combination by phosphorous acid esters auxiliary antioxidant: three (2.4-di-tert-butyl-phenyl) phosphorous acid ester, two (2,4-di-tert-butyl-phenyl) pentaerythritol diphosphites, four (2,4-di-t-butyl eight alkoxyl group-4,4-xenyl) phosphoric acid ester.
11. high rate of extrusion heat-shrinkable T bush according to claim 1, it is characterized in that: described crosslinking accelerator is following a kind of or several combination: trimethylolpropane tris (methyl) acrylate, Viscoat 295, tetramethylol methane tetraacrylate, triallyl isocyanate, 1,3 butylene glycol dimethacrylate.
The preparation method of 12. 1 kinds of high rate of extrusion heat-shrinkable T bush as claimed in claim 1, is characterized in that: it comprises the steps:
Step 1: the material of preparing of rate of extrusion heat-shrinkable T bush high described in any one of claim 1 to 11 is mixed by formula rate;
Step 2: by the batch mixing of step 1 through mixer mixing granulation and twin screw extruder mixing granulator, then uses single screw extrusion machine extrusion moulding tubing;
Step 3: the rumbatron of the above energy of tubing 4MeV carries out irradiation to the tubing in step 2, the tubing after cross-linking radiation expands 1.5-4 doubly at 80-140 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510229880.4A CN105001503A (en) | 2015-05-07 | 2015-05-07 | High-extrusion-rate heat-shrinkable tube and production method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510229880.4A CN105001503A (en) | 2015-05-07 | 2015-05-07 | High-extrusion-rate heat-shrinkable tube and production method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105001503A true CN105001503A (en) | 2015-10-28 |
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Cited By (7)
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| CN105367888A (en) * | 2015-12-11 | 2016-03-02 | 无锡市华美电缆有限公司 | Halogen-free low-smoke cable material |
| CN106046520A (en) * | 2016-07-21 | 2016-10-26 | 芜湖顺成电子有限公司 | Low-smoke zero-halogen flame-retardant cable material |
| CN107312227A (en) * | 2017-07-21 | 2017-11-03 | 国网辽宁省电力有限公司丹东供电公司 | 35kV injection molding type joint injection molding material and manufacturing process |
| CN108081567A (en) * | 2017-12-26 | 2018-05-29 | 深圳市沃尔核材股份有限公司 | The production method and production system of a kind of pyrocondensation branch fingerstall |
| CN109749217A (en) * | 2018-12-25 | 2019-05-14 | 上海至正道化高分子材料股份有限公司 | A kind of building cotton covered wire 70 year service life irradiated crosslinking low-smoke and halogen-free external insulation CABLE MATERIALS and preparation method thereof |
| CN112778620A (en) * | 2020-12-31 | 2021-05-11 | 长园电子（东莞）有限公司 | Heat-shrinkable sleeve and preparation method thereof |
| CN114106443A (en) * | 2021-12-03 | 2022-03-01 | 上海长园电子材料有限公司 | Antibacterial heat-shrinkable tube and preparation method and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105367888A (en) * | 2015-12-11 | 2016-03-02 | 无锡市华美电缆有限公司 | Halogen-free low-smoke cable material |
| CN106046520A (en) * | 2016-07-21 | 2016-10-26 | 芜湖顺成电子有限公司 | Low-smoke zero-halogen flame-retardant cable material |
| CN107312227A (en) * | 2017-07-21 | 2017-11-03 | 国网辽宁省电力有限公司丹东供电公司 | 35kV injection molding type joint injection molding material and manufacturing process |
| CN107312227B (en) * | 2017-07-21 | 2020-01-17 | 国网辽宁省电力有限公司丹东供电公司 | 35kV injection molding type joint injection molding material and manufacturing process |
| CN108081567A (en) * | 2017-12-26 | 2018-05-29 | 深圳市沃尔核材股份有限公司 | The production method and production system of a kind of pyrocondensation branch fingerstall |
| CN109749217A (en) * | 2018-12-25 | 2019-05-14 | 上海至正道化高分子材料股份有限公司 | A kind of building cotton covered wire 70 year service life irradiated crosslinking low-smoke and halogen-free external insulation CABLE MATERIALS and preparation method thereof |
| CN112778620A (en) * | 2020-12-31 | 2021-05-11 | 长园电子（东莞）有限公司 | Heat-shrinkable sleeve and preparation method thereof |
| CN114106443A (en) * | 2021-12-03 | 2022-03-01 | 上海长园电子材料有限公司 | Antibacterial heat-shrinkable tube and preparation method and application thereof |
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