CN105061879A - Ethylene-vinyl acetate copolymer based thermoplastic semiconductive shielding material for conductor and preparation method of thermoplastic semiconductive shielding material - Google Patents
Ethylene-vinyl acetate copolymer based thermoplastic semiconductive shielding material for conductor and preparation method of thermoplastic semiconductive shielding material Download PDFInfo
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- CN105061879A CN105061879A CN201510512332.2A CN201510512332A CN105061879A CN 105061879 A CN105061879 A CN 105061879A CN 201510512332 A CN201510512332 A CN 201510512332A CN 105061879 A CN105061879 A CN 105061879A
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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
- C08L23/0853—Vinylacetate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/001—Conductive additives
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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
- C08K2201/011—Nanostructured additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- 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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Abstract
The invention discloses an ethylene-vinyl acetate copolymer based thermoplastic semiconductive shielding material for a conductor and a preparation method of the thermoplastic semiconductive shielding material. The thermoplastic semiconductive shielding material consists of the following components in parts by weight: 70-150 parts of ethylene-vinyl acetate copolymer, 20-60 parts of linear low density polyethylene, 30-50 parts of carbon black, 10-15 parts of a lubricant, 0.5-2 parts of an antioxygen and 1-2 parts of a filling agent. The thermoplastic semiconductive shielding material is formed by adopting the specific components according to the specific content, so that under the condition of not adopting a cross linking agent, the processing temperature is increased, the extrusion property is not influenced, and the product performance meets the requirements of JB/T10738-2007.
Description
Technical field
The present invention relates to a kind of conductor thermoplasticity semiconductive shieldin material based on ethylene-vinyl acetate copolymer and preparation method thereof.
Background technology
Cross-linked polyethylene insulated cable conductor peroxide crosslinking type semiconductive shieldin material has good shielding properties and the processing stability of excellence, be widely used in the conductor shield of domestic peroxide crosslinking insulated cable, as the shielding material of electric wire, due to the difference of its applied environment, not identical to the requirement of its performance yet; For production 10KV silane crosslinked insulating overhead line, if adopt the expressing technique of double-layer coextrusion, the extrusion temperature of cross-linked polyethylene insulated cable conductor peroxide crosslinking type semiconductive shieldin material controls within 118 DEG C, scope is narrower, but in fact, the extrusion temperature of silane crosslinked insulating material requires higher, general at about 200 DEG C, head temperature can be caused at such a temperature mutually to conduct, shielding material pre-cross-linking phenomena occurs, cannot extrude.
Summary of the invention
Be directed to above-mentioned deficiency of the prior art, the invention provides a kind of conductor thermoplasticity semiconductive shieldin material based on ethylene-vinyl acetate copolymer, solve in existing cross-linking type semiconductive shieldin material production process and extrude temperature and can not mate to cause shielding with extrusion performance and expect pre-cross-linking phenomena occurs and the problem that cannot extrude.
In order to achieve the above object, the technical solution used in the present invention is:
Based on a conductor thermoplasticity semiconductive shieldin material for ethylene-vinyl acetate copolymer, it is characterized in that, be made up of the component of following weight part:
In the preferred technical solution of the present invention, the conductor thermoplasticity semiconductive shieldin material based on ethylene-vinyl acetate copolymer is made up of the component of following weight part:
Described lubricant is made up of the component of following weight part:
White oil 5 ~ 10 parts
Polyethylene wax 1 ~ 3 part.
Described lubricant is made up of the component of following weight part:
White oil 8 parts
Polyethylene wax 2 parts.
Described white oil is formed according to the proportions that weight ratio is 1:1 by No. 100 white oils and No. 200 white oils.
The molecular weight of described polyethylene wax is 4000 ~ 5000.
The content of described ethylene-vinyl acetate copolymer medium vinyl acetate is 18 ~ 20%.
Described oxidation inhibitor is antioxidant 1010; Described weighting agent is nano-calcium carbonate.
The preparation method of the above-mentioned conductor thermoplasticity semiconductive shieldin material based on ethylene-vinyl acetate copolymer, comprising:
According to formula rate, ethylene-vinyl acetate copolymer, linear low density polyethylene, carbon black, lubricant, oxidation inhibitor and weighting agent are added in Banbury mixer, carry out banburying at 160 ~ 180 DEG C;
Again the material after banburying is joined in parallel dual-screw extruding machine and carry out extruding pelletization, dry, obtained.
Conductor thermoplasticity semiconductive shieldin material based on ethylene-vinyl acetate copolymer of the present invention is by adopting the specific components composition with certain content, when not adopting linking agent, improve processing temperature, do not affect extrusion performance, product performance all meet the requirement of JB/T10738-2007 simultaneously.
Ethylene-vinyl acetate copolymer of the present invention is closedcells structure, have do not absorb water, the feature of moistureproof, water tolerance, solve the shortcoming that carbon black easily absorbs water, extend the shelf-time of product, widened the storage condition of product.
Embodiment
For making the object of the application, technical scheme and advantage clearly, following specific embodiment, is described in further detail the application.
Embodiment 1
Conductor thermoplasticity semiconductive shieldin material based on ethylene-vinyl acetate copolymer is made up of the component of following weight part: ethylene-vinyl acetate copolymer 70 parts, linear low density polyethylene 20 parts, carbon black 30 parts, lubricant 10 parts, 0.5 part, oxidation inhibitor and weighting agent 1 part; Lubricant is made up of the component of following weight part: white oil 5 parts and polyethylene wax 1 part; White oil is formed according to the proportions that weight ratio is 1:1 by No. 100 white oils and No. 200 white oils; The molecular weight of polyethylene wax is 4000 ~ 5000; Oxidation inhibitor is antioxidant 1010; Weighting agent is nano-calcium carbonate.
The preparation method of the above-mentioned conductor thermoplasticity semiconductive shieldin material based on ethylene-vinyl acetate copolymer is:
According to above-mentioned formula rate, ethylene-vinyl acetate copolymer, linear low density polyethylene, carbon black, lubricant, oxidation inhibitor and weighting agent are joined in Banbury mixer, at 160 DEG C, carry out banburying;
Again the material after banburying is joined in parallel dual-screw extruding machine and carry out extruding pelletization, in granulation process, the mode of water ring pelletizing is adopted to carry out granulation, and utilize current to carry, centrifuge is adopted to be separated with moisture material again, finally the micro-moisture of material surface attachment is dried.
The performance of this obtained product is tested, meets the requirement of JB/T10738-2007.
Embodiment 2
Conductor thermoplasticity semiconductive shieldin material based on ethylene-vinyl acetate copolymer is made up of the component of following weight part: ethylene-vinyl acetate copolymer 100 parts, linear low density polyethylene 30 parts, carbon black 35 parts, lubricant 10 parts, 0.5 part, oxidation inhibitor and weighting agent 1.5 parts; Lubricant is made up of the component of following weight part: white oil 8 parts and polyethylene wax 2 parts; White oil is formed according to the proportions that weight ratio is 1:1 by No. 100 white oils and No. 200 white oils; The molecular weight of polyethylene wax is 4000 ~ 5000; Oxidation inhibitor is 1010 antioxidant 1010s; Weighting agent is nano-calcium carbonate.
The preparation method of the above-mentioned conductor thermoplasticity semiconductive shieldin material based on ethylene-vinyl acetate copolymer is:
According to above-mentioned formula rate, ethylene-vinyl acetate copolymer, linear low density polyethylene, carbon black, lubricant, oxidation inhibitor and weighting agent are joined in Banbury mixer, at 180 DEG C, carry out banburying;
Again the material after banburying is joined in parallel dual-screw extruding machine and carry out extruding pelletization, in granulation process, the mode of water ring pelletizing is adopted to carry out granulation, and utilize current to carry, centrifuge is adopted to be separated with moisture material again, finally the micro-moisture of material surface attachment is dried.
The performance of this obtained product is tested, meets the requirement of JB/T10738-2007.
Embodiment 3
Conductor thermoplasticity semiconductive shieldin material based on ethylene-vinyl acetate copolymer is made up of the component of following weight part: ethylene-vinyl acetate copolymer 150 parts, linear low density polyethylene 60 parts, carbon black 50 parts, lubricant 15 parts, 2 parts, oxidation inhibitor and weighting agent 2 parts; Lubricant is made up of the component of following weight part: white oil 10 parts and polyethylene wax 3 parts; White oil is formed according to the proportions that weight ratio is 1:1 by No. 100 white oils and No. 200 white oils; The molecular weight of polyethylene wax is 4000 ~ 5000; Oxidation inhibitor is antioxidant 1010; Weighting agent is nano-calcium carbonate.
The preparation method of the above-mentioned conductor thermoplasticity semiconductive shieldin material based on ethylene-vinyl acetate copolymer is:
According to above-mentioned formula rate, ethylene-vinyl acetate copolymer, linear low density polyethylene, carbon black, lubricant, oxidation inhibitor and weighting agent are joined in Banbury mixer, at 170 DEG C, carry out banburying;
Again the material after banburying is joined in parallel dual-screw extruding machine and carry out extruding pelletization, in granulation process, the mode of water ring pelletizing is adopted to carry out granulation, and utilize current to carry, centrifuge is adopted to be separated with moisture material again, finally the micro-moisture of material surface attachment is dried.
The performance of this obtained product is tested, meets the requirement of JB/T10738-2007.
Embodiment 4
Conductor thermoplasticity semiconductive shieldin material based on ethylene-vinyl acetate copolymer is made up of the component of following weight part: ethylene-vinyl acetate copolymer 120 parts, linear low density polyethylene 50 parts, carbon black 40 parts, lubricant 13 parts, 1 part, oxidation inhibitor and weighting agent 1 part; Lubricant is made up of the component of following weight part: white oil 6 parts and polyethylene wax 2 parts; White oil is formed according to the proportions that weight ratio is 1:1 by No. 100 white oils and No. 200 white oils; The molecular weight of polyethylene wax is 4000 ~ 5000; Oxidation inhibitor is antioxidant 1010; Weighting agent is nano-calcium carbonate.
The preparation method of the above-mentioned conductor thermoplasticity semiconductive shieldin material based on ethylene-vinyl acetate copolymer is:
According to above-mentioned formula rate, ethylene-vinyl acetate copolymer, linear low density polyethylene, carbon black, lubricant, oxidation inhibitor and weighting agent are joined in Banbury mixer, at 160 DEG C, carry out banburying;
Again the material after banburying is joined in parallel dual-screw extruding machine and carry out extruding pelletization, in granulation process, the mode of water ring pelletizing is adopted to carry out granulation, and utilize current to carry, centrifuge is adopted to be separated with moisture material again, finally the micro-moisture of material surface attachment is dried.
The performance of this obtained product is tested, meets the requirement of JB/T10738-2007.
The product obtained to above-described embodiment 1 to embodiment 4 is designated as 1#, 2#, 3# and 4# respectively, and the performance of these these products is tested, shown in table specific as follows:
As can be seen from above table, the product adopting the inventive method to obtain all meets the requirement of JB/T10738-2007, therefore, the present invention is by arranging the content of each component in the formula of thermoplasticity semiconductive shieldin material and formula, solve the cross-linked polyethylene insulated cable conductor peroxide crosslinking type semiconductive shieldin material problem that in use processing temperature span of control is partially narrow, make when not adopting linking agent, while processing temperature is provided, also do not affect extrusion performance, range of application is promoted greatly.
Claims (10)
1., based on a conductor thermoplasticity semiconductive shieldin material for ethylene-vinyl acetate copolymer, it is characterized in that, be made up of the component of following weight part:
Ethylene-vinyl acetate copolymer 70 ~ 150 parts
Linear low density polyethylene 20 ~ 60 parts
Carbon black 30 ~ 50 parts
Lubricant 10 ~ 15 parts
0.5 ~ 2 part, oxidation inhibitor
Weighting agent 1 ~ 2 part.
2. the conductor thermoplasticity semiconductive shieldin material based on ethylene-vinyl acetate copolymer according to claim 1, is characterized in that, be made up of the component of following weight part:
Ethylene-vinyl acetate copolymer 100 parts
Linear low density polyethylene 30 parts
Carbon black 35 parts
Lubricant 10 parts
0.5 part, oxidation inhibitor
Weighting agent 1.5 parts.
3. the conductor thermoplasticity semiconductive shieldin material based on ethylene-vinyl acetate copolymer according to claim 1 and 2, it is characterized in that, described lubricant is made up of the component of following weight part:
White oil 5 ~ 10 parts
Polyethylene wax 1 ~ 3 part.
4. the conductor thermoplasticity semiconductive shieldin material based on ethylene-vinyl acetate copolymer according to claim 3, it is characterized in that, described lubricant is made up of the component of following weight part:
White oil 8 parts
Polyethylene wax 2 parts.
5. the conductor thermoplasticity semiconductive shieldin material based on ethylene-vinyl acetate copolymer according to claim 3, is characterized in that, described white oil is formed according to the proportions that weight ratio is 1:1 by No. 100 white oils and No. 200 white oils.
6. the conductor thermoplasticity semiconductive shieldin material based on ethylene-vinyl acetate copolymer according to claim 3, is characterized in that, the molecular weight of described polyethylene wax is 4000 ~ 5000.
7. the conductor thermoplasticity semiconductive shieldin material based on ethylene-vinyl acetate copolymer according to claim 1 and 2, is characterized in that, the content of described ethylene-vinyl acetate copolymer medium vinyl acetate is 18 ~ 20%.
8. the conductor thermoplasticity semiconductive shieldin material based on ethylene-vinyl acetate copolymer according to claim 1, it is characterized in that, described oxidation inhibitor is antioxidant 1010.
9. the conductor thermoplasticity semiconductive shieldin material based on ethylene-vinyl acetate copolymer according to claim 1, it is characterized in that, described weighting agent is nano-calcium carbonate.
10. the preparation method of the arbitrary described conductor thermoplasticity semiconductive shieldin material based on ethylene-vinyl acetate copolymer of claim 1 ~ 9, is characterized in that, comprising:
According to formula rate, ethylene-vinyl acetate copolymer, linear low density polyethylene, carbon black, lubricant, oxidation inhibitor and weighting agent are added in Banbury mixer, carry out banburying at 160 ~ 180 DEG C;
Again the material after banburying is joined in parallel dual-screw extruding machine and carry out extruding pelletization, dry, obtained.
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| CN201510512332.2A CN105061879B (en) | 2015-08-19 | 2015-08-19 | It is a kind of based on the conductor of ethylene-vinyl acetate copolymer thermoplasticity semiconductive shieldin material and preparation method thereof |
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| CN201510512332.2A CN105061879B (en) | 2015-08-19 | 2015-08-19 | It is a kind of based on the conductor of ethylene-vinyl acetate copolymer thermoplasticity semiconductive shieldin material and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110328828A (en) * | 2019-07-10 | 2019-10-15 | 长园电力技术有限公司 | The compound semiconductive Stress Control cone of cross-linking type EVA and production method |
| CN110698752A (en) * | 2019-10-08 | 2020-01-17 | 深圳市晖耀电线电缆有限公司 | Conductive shielding film material, preparation method thereof and shielding data line |
| CN111303526A (en) * | 2020-04-02 | 2020-06-19 | 成都鑫成鹏高分子科技股份有限公司 | Multilayer graphene modified semiconductive shielding material and preparation method thereof |
| CN111816348A (en) * | 2020-07-20 | 2020-10-23 | 江苏中天科技股份有限公司 | Semi-conductive metal composite belt and cable |
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| CN111303526A (en) * | 2020-04-02 | 2020-06-19 | 成都鑫成鹏高分子科技股份有限公司 | Multilayer graphene modified semiconductive shielding material and preparation method thereof |
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