CN113321863A - Al for direct current cable2O3Preparation method of/XLPE composite material - Google Patents
Al for direct current cable2O3Preparation method of/XLPE composite material Download PDFInfo
- Publication number
- CN113321863A CN113321863A CN202110652081.3A CN202110652081A CN113321863A CN 113321863 A CN113321863 A CN 113321863A CN 202110652081 A CN202110652081 A CN 202110652081A CN 113321863 A CN113321863 A CN 113321863A
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- CN
- China
- Prior art keywords
- xlpe
- composite material
- coupling agent
- preparation
- direct current
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Links
- 229920003020 cross-linked polyethylene Polymers 0.000 title claims abstract description 47
- 239000004703 cross-linked polyethylene Substances 0.000 title claims abstract description 47
- 239000002131 composite material Substances 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 7
- 239000002245 particle Substances 0.000 claims abstract description 17
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910052593 corundum Inorganic materials 0.000 claims abstract description 16
- 238000002156 mixing Methods 0.000 claims abstract description 16
- 229910001845 yogo sapphire Inorganic materials 0.000 claims abstract description 16
- 238000004132 cross linking Methods 0.000 claims abstract description 14
- 239000007822 coupling agent Substances 0.000 claims abstract description 13
- 238000007731 hot pressing Methods 0.000 claims abstract description 11
- 238000002360 preparation method Methods 0.000 claims abstract description 11
- 238000007872 degassing Methods 0.000 claims abstract description 9
- 238000001291 vacuum drying Methods 0.000 claims abstract description 7
- 239000006227 byproduct Substances 0.000 claims abstract description 6
- 230000004913 activation Effects 0.000 claims abstract description 5
- 230000015556 catabolic process Effects 0.000 claims abstract description 5
- 238000004381 surface treatment Methods 0.000 claims abstract description 4
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 2
- 239000000155 melt Substances 0.000 claims description 2
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 2
- 150000002910 rare earth metals Chemical class 0.000 claims description 2
- 238000002347 injection Methods 0.000 abstract description 2
- 239000007924 injection Substances 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000010923 batch production Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- 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
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
- C08K9/06—Ingredients treated with organic substances with silicon-containing compounds
-
- 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
-
- 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
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
- H01B3/441—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from alkenes
-
- 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
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
-
- 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
- C08K2201/011—Nanostructured additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
- C08L2203/202—Applications use in electrical or conductive gadgets use in electrical wires or wirecoating
Abstract
The invention discloses Al for a direct current cable2O3/The preparation method of XLPE composite material is characterized by that the nano Al undergone the process of coupling agent surface treatment2O3Placing the particle crosslinked polyethylene particles in a torque rheometer for blending, then placing the particles on a flat vulcanizing machine for hot-pressing crosslinking, then placing the particles in a vacuum drying oven for degassing treatment, removing crosslinking byproducts in a sample, and finally preparing Al2O3the/XLPE composite material. The Al2O3the/XLPE composite material is directly used in XLPE for direct current cableAdding micro nano Al2O3The crystallinity, the conductivity activation energy and the direct current breakdown field strength can be increased, the conductivity is reduced, and the injection of positive charges is inhibited.
Description
Technical Field
The invention relates to the technical field of direct current cables, in particular to Al for a direct current cable2O3A preparation method of/XLPE composite material.
Background
The high-voltage direct-current transmission system can transmit large-capacity and long-distance electric energy, has low line manufacturing cost and small electric energy loss, and is widely applied to the connection between electric power systems, long-distance transmission and the like. With the large-scale investment of high-voltage direct-current lines, the power industry puts more strict requirements on the performance and reliability of direct-current insulating materials. Crosslinked polyethylene has good heat resistance, chemical resistance and electrical insulation properties, and thus is widely used in the field of cable manufacture, playing an important role in the transmission of electrical energy. When the crosslinked polyethylene is applied to a high-voltage direct-current transmission cable, the crosslinked polyethylene needs to have excellent direct-current dielectric properties, especially excellent space charge characteristics.
Disclosure of Invention
In order to solve the above-mentioned disadvantages of the prior art, the present invention provides an Al for DC cable2O3the/XLPE composite material. The Al2O3the/XLPE composite material is directly added with trace nano Al in XLPE for direct current cables2O3The crystallinity, the conductivity activation energy and the direct current breakdown field strength can be increased, the conductivity is reduced, and the injection of positive charges is inhibited.
Another object of the present invention is to provide the above Al for DC cable2O3The preparation method of the/XLPE composite material is simple, low in cost, high in yield and suitable for industrial batch production.
The purpose of the invention is realized by the following technical scheme:
al for direct current cable2O3a/XLPE composite material, which is to be passed throughNano Al after surface treatment of coupling agent2O3Placing the particle crosslinked polyethylene particles in a torque rheometer for blending, then placing the particles on a flat vulcanizing machine for hot-pressing crosslinking, then placing the particles in a vacuum drying oven for degassing treatment, removing crosslinking byproducts in a sample, and finally preparing Al2O3the/XLPE composite material.
Preferably, the Al for the direct current cable2O3The preparation method of the/XLPE composite material comprises the following steps:
s1: nano Al after surface treatment by coupling agent2O3The particle cross-linked polyethylene particles are placed in a torque rheometer to be blended,
s2: placing the sample obtained in S1 on a vulcanizing press for hot-pressing crosslinking, placing the sample into a vacuum drying oven for degassing treatment, removing crosslinking byproducts in the sample, and finally preparing Al2O3the/XLPE composite material.
Preferably, the coupling agent in step S1 is one or more of a silane coupling agent, a titanate coupling agent, and a rare earth coupling agent, and the Al is2O3The doping mass fraction is 0.5 wt% to 5.5 wt%.
Preferably, the mixing temperature in the step S1 is 130-330 ℃, and the mixing time is 10-48 h.
Preferably, the hot-pressing temperature in the step S2 is 100-220 ℃, the hot-pressing time is 25-60min, the pressure is 16-120 MP, and the degassing treatment time is 24-48 h.
Preferably, the Al for the direct current cable2O3The preparation method of the/XLPE composite material is characterized in that the preparation method is a melt blending method for mixing nano Al2O3The particles are added into XLPE to modify the XLPE to prepare Al2O3the/XLPE composite material.
Preferably, the Al for the direct current cable2O3The XLPE composite material is characterized in that the modified XLPE has higher crystallinity and higher volume resistivity, and the modified space charge reduces the electric activation and the breakdown strength is obviously enhanced.
Compared with the prior art, the invention has the following beneficial effects:
1. the modified XLPE prepared by directly adding trace nano Al2O3 into XLPE for a direct current cable has higher crystallinity and higher volume resistivity, and the modified space charge reduces the electric activation and the breakdown strength is obviously enhanced.
2. The invention has simple manufacturing method, low cost and high yield, and is suitable for industrial batch production.
Detailed Description
The present invention will be described in further detail with reference to examples, but the embodiments of the present invention are not limited thereto. Unless otherwise specified, the technical means used in the examples are conventional means well known to those skilled in the art. Reagents, methods and apparatus used in the present invention are conventional in the art unless otherwise indicated.
Example 1
1. Taking 0.5 percent of Al treated by the coupling agent in percentage by mass2O3Mixing the mixture and cross-linked polyethylene particles in a torque rheometer for 12 hours at the mixing temperature of 130 ℃;
2. putting the sample obtained in the step 1 on a flat vulcanizing machine at the temperature of 160 ℃ for hot-pressing crosslinking for 24min to prepare a film sample, wherein the pressure is 20 MPa;
3. placing the film sample prepared by the step 2 into a vacuum drying oven, and degassing at 80 ℃ for 24 hours to remove a crosslinking byproduct in the sample; finally obtaining Al2O3the/XLPE composite material.
Example 2
1. Taking 0.8 percent of Al treated by the coupling agent in percentage by mass2O3Mixing the mixture and cross-linked polyethylene particles in a torque rheometer at the mixing temperature of 150 ℃;
2. putting the sample obtained in the step 1 on a flat vulcanizing machine at the temperature of 160 ℃ for hot-pressing crosslinking for 20min to prepare a film sample, wherein the pressure is 22 MPa;
3. placing the film sample prepared in the step 2 into a vacuum drying oven, degassing at 75 ℃ for 18h, and removing a cross-linking pair in the sampleA product; finally obtaining Al2O3the/XLPE composite material.
Example 3
1. Taking 1 percent of Al treated by the coupling agent in mass fraction2O3Mixing the mixture and crosslinked polyethylene particles in a torque rheometer at the mixing temperature of 140 ℃;
2. putting the sample obtained in the step 1 on a flat vulcanizing machine at the temperature of 160 ℃ for hot-pressing crosslinking for 30min to prepare a film sample, wherein the pressure is 25 MPa;
3. placing the film sample prepared by the step 2 into a vacuum drying oven, and degassing at 75 ℃ for 24 hours to remove a crosslinking byproduct in the sample; finally obtaining Al2O3the/XLPE composite material.
Claims (6)
1. Al for direct current cable2O3The preparation method of the/XLPE composite material is characterized by comprising the following steps:
s1: nano Al after surface treatment by coupling agent2O3The particle cross-linked polyethylene particles are placed in a torque rheometer to be blended,
s2: placing the sample obtained in S1 on a vulcanizing press for hot-pressing crosslinking, placing the sample into a vacuum drying oven for degassing treatment, removing crosslinking byproducts in the sample, and finally preparing Al2O3the/XLPE composite material.
2. The method for preparing Al2O3/XLPE composite material for DC cable according to claim 1, wherein the coupling agent is one or more of silane coupling agent, titanate coupling agent and rare earth coupling agent in step S1, and the Al is2O3The doping mass fraction is 0.5 wt% to 5.5 wt%.
3. Al for DC cable according to claim 12O3The preparation method of the/XLPE composite material is characterized in that in the step S1, the mixing temperature is 130-330 ℃, and the mixing time is 10-48 h.
4. Al for DC cable according to claim 12O3The preparation method of the/XLPE composite material is characterized in that the hot pressing temperature in the step S2 is 100-220 ℃, the hot pressing time is 25-60min, the pressure is 16-120 MP, and the degassing treatment time is 24-48 h.
5. Al for DC cable according to claim 12O3The preparation method of the/XLPE composite material is characterized in that the preparation method is a melt blending method for mixing nano Al2O3The particles are added into XLPE to modify the XLPE to prepare Al2O3the/XLPE composite material.
6. Al for DC cable according to claim 52O3The XLPE composite material is characterized in that the modified XLPE has higher crystallinity and higher volume resistivity, and the modified space charge reduces the electric activation and the breakdown strength is obviously enhanced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110652081.3A CN113321863A (en) | 2021-06-11 | 2021-06-11 | Al for direct current cable2O3Preparation method of/XLPE composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110652081.3A CN113321863A (en) | 2021-06-11 | 2021-06-11 | Al for direct current cable2O3Preparation method of/XLPE composite material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113321863A true CN113321863A (en) | 2021-08-31 |
Family
ID=77420506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110652081.3A Pending CN113321863A (en) | 2021-06-11 | 2021-06-11 | Al for direct current cable2O3Preparation method of/XLPE composite material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113321863A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115260629A (en) * | 2022-07-29 | 2022-11-01 | 广东工业大学 | Polyethylene material for submarine cable and preparation method thereof |
-
2021
- 2021-06-11 CN CN202110652081.3A patent/CN113321863A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115260629A (en) * | 2022-07-29 | 2022-11-01 | 广东工业大学 | Polyethylene material for submarine cable and preparation method thereof |
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