CN110951188A - Tracking-resistant polyvinyl chloride insulating material and preparation method and application thereof - Google Patents
Tracking-resistant polyvinyl chloride insulating material and preparation method and application thereof Download PDFInfo
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08L27/06—Homopolymers or copolymers of vinyl chloride
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- 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
- H01B3/443—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 vinylhalogenides or other halogenoethylenic compounds
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- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
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- C08K2003/2224—Magnesium hydroxide
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- 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
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- 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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- 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
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- 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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Abstract
The invention discloses a tracking-resistant polyvinyl chloride insulating material, and a preparation method and application thereof, wherein the tracking-resistant polyvinyl chloride insulating material comprises the following components in parts by weight: 80-100 parts of polyvinyl chloride resin, 40-70 parts of plasticizer, 10-20 parts of nano-grade active calcium carbonate, 30-80 parts of tracking resistance modifier, 6-8 parts of heat stabilizer, 1-1.8 parts of light stabilizer, 2-3 parts of ultraviolet absorbent and 10-20 parts of electrical property modifier. On the basis of meeting all requirements of the polyvinyl chloride insulating material in GB/T12527-2008, the tracking resistance of the tracking-resistant polyvinyl chloride insulating material is effectively improved, and the service life of a polyvinyl chloride insulating overhead cable can be prolonged and the safety of an overhead transmission line can be ensured through a tracking-resistant test of grade 1A2.5 (according to GB/T6553-2014).
Description
Technical Field
The invention relates to the technical field of cable sheath materials, and particularly discloses a tracking-resistant polyvinyl chloride insulating material and a preparation method thereof, and discloses application of the tracking-resistant polyvinyl chloride insulating material in the field of overhead insulated cables with rated voltage of 1KV and below.
Background
In recent years, the economy of China is rapidly developed, particularly the power industry as the national economic fate is rapidly developed, and the safety problem of the overhead transmission line is widely concerned by people. The overhead wire is laid in the air as the name implies, and inevitably suffers from various factors such as temperature, electricity and mechanical stress and vibration, sunlight exposure, harmful gas, chemical substances, humidity, dust and the like in the operation process, and the insulating material is inevitably aged along with the continuation of the operation time, and the aging speed of the insulating material is far faster than that of other materials, so that the insulation resistance is reduced, the leakage current is increased, and finally, short circuit is caused, and serious disasters such as insulation damage, fire and the like are caused.
The overhead insulated cable specified in GB/T12527-2008 rated voltage 1KV and below adopts a mixture based on weather-resistant polyvinyl chloride, polyethylene and crosslinked polyethylene as an insulating material. Polyethylene and crosslinked polyethylene are modified materials taking polyethylene resin as a base material, the polyethylene resin is nonpolar and has better tracking resistance, and at present, the invention research on tracking resistance polyethylene sheath materials is more, such as a high tracking resistance ADSS optical cable sheath material (patent number: CN104151681A), but tracking resistance research on polyvinyl chloride insulating materials is rarely reported. And the polyvinyl chloride insulating material for the overhead cable in the current market can only withstand for 1 hour under the voltage of 1.5KV according to GB/T6553-2014, and has particularly poor tracking resistance.
Disclosure of Invention
The invention aims to improve the tracking resistance of the existing polyvinyl chloride insulating material for the overhead cable, prolong the service life of the polyvinyl chloride insulating overhead cable and ensure the safety of an overhead transmission line.
In order to achieve the purpose, the invention adopts the following technical scheme:
a tracking-resistant polyvinyl chloride insulating material comprises the following components in parts by weight: 80-100 parts of polyvinyl chloride resin, 40-70 parts of plasticizer, 10-20 parts of nano-grade active calcium carbonate, 30-80 parts of tracking resistance modifier, 6-8 parts of heat stabilizer, 1-1.8 parts of light stabilizer, 2-3 parts of ultraviolet absorbent and 10-20 parts of electrical property modifier.
Preferably, the polyvinyl chloride resin is a polyvinyl chloride resin A and a polyvinyl chloride resin B according to a mass ratio of 1: 1 is compounded; wherein the polymerization degree of the polyvinyl chloride resin A is 1400-class 1500, and the polymerization degree of the polyvinyl chloride resin B is 2300-class 2700.
Exemplarily, the type of the polyvinyl chloride resin A is Ningbo Taiwan S-75, the type of the polyvinyl chloride resin B is Ningbo Taiwan S-85, the average primary particle size of the nano active calcium carbonate is 60-90nm, the content of the calcium carbonate is more than 95%, and the specific surface area is 19-27m2The model of the nano active calcium carbonate is Jiangxi Huaming SPSL-1.
Preferably, the plasticizer is prepared from a plasticizer A and a plasticizer B according to the mass ratio of (1-3): 1 is compounded; wherein the plasticizer A is dioctyl terephthalate, and the plasticizer B is halogenated polyether fatty acid ester.
Preferably, the tracking resistance modifier is a tracking resistance modifier A, a tracking resistance modifier B and a tracking resistance modifier C according to a mass ratio (1-7): (1-4): 1 is compounded; the tracking resistance modifier A is magnesium hydroxide, the tracking resistance modifier B is aluminum hydroxide, and the tracking resistance modifier C is nano-scale titanium dioxide.
The tracking resistance modifier A is high-purity magnesium hydroxide prepared by a sinking method, and the specific surface area is 4.0-6.0m2The grain diameter D50 is 1.25-1.65 μm, and the tracking resistance modifier A is preferably Yabao MAGNIFINH 5;
the tracking resistance modifier B is aluminum hydroxide prepared by a precipitation method, the particle size D50 is 1.7-2.1 mu m, and the specific surface area is 3.0-5.0m2And the tracking resistance modifier B is preferably alumina jacobol hydroxide Martinalol-104 LEO.
Preferably, the heat stabilizer is a powdery calcium-zinc composite heat stabilizer; and the light stabilizer is hindered benzoate light stabilizer.
Illustratively, the heat stabilizer is preferably bear MC91717KA, and the light stabilizer is preferably CYASORBUV-2908.
Preferably, the ultraviolet absorbent is benzophenone ultraviolet absorbent; the electrical property modifier is calcined argil.
Illustratively, the ultraviolet absorber is preferably CHIMASSORB 81; the electrical property modifier is preferably Guangxi combined strong calcined pottery clay.
The invention also claims a preparation method of the tracking-resistant polyvinyl chloride insulating material.
A preparation method of a tracking-resistant polyvinyl chloride insulating material specifically comprises the following steps:
(1) weighing raw materials according to the composition ratio disclosed in claim 1, and putting the raw materials into a high-speed kneader for heating and stirring to obtain a uniform mixture;
(2) and extruding and granulating the uniformly stirred mixture through a double-screw granulator, and then drying to obtain the tracking-resistant polyvinyl chloride insulating material.
Preferably, in the step (1), the kneading heating temperature is 90-110 ℃, and the kneading time is 9-12 min.
Preferably, in the step (2), the heating temperature of each section of the double-screw granulator is divided equally from 125-160 ℃ according to the number of the heating sections.
And each section of the double-screw granulator has low heating temperature, which causes poor plasticization, and the material is easily decomposed when the temperature is too high.
In addition, the invention also claims the application of the tracking-resistant polyvinyl chloride insulating material in the overhead insulated cable.
In particular to application of the tracking-resistant polyvinyl chloride insulating material in an overhead insulated cable with rated voltage of 1KV and below.
According to the technical scheme, compared with the prior art, the invention discloses the tracking-resistant polyvinyl chloride insulating material and the preparation method and application thereof, and the tracking-resistant polyvinyl chloride insulating material has the following excellent effects:
on the basis of meeting all requirements of the polyvinyl chloride insulating material in GB/T12527-2008, the tracking resistance is effectively improved, the service life of the polyvinyl chloride insulating overhead cable can be prolonged through a 1A 2.5-level tracking resistance test (according to GB/T6553-2014), and the safety of an overhead transmission line is ensured.
Detailed Description
The present invention will be described clearly and completely with reference to the technical solutions provided in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be understood that the processing equipment or devices not specifically mentioned in the following examples are conventional in the art; all pressure values and ranges refer to absolute pressures.
Furthermore, it is to be understood that one or more method steps mentioned in the present invention does not exclude that other method steps may also be present before or after the combined steps or that other method steps may also be inserted between these explicitly mentioned steps, unless otherwise indicated; it is also to be understood that a combined connection between one or more devices/apparatus as referred to in the present application does not exclude that further devices/apparatus may be present before or after the combined device/apparatus or that further devices/apparatus may be interposed between two devices/apparatus explicitly referred to, unless otherwise indicated. Moreover, unless otherwise indicated, the numbering of the various method steps is merely a convenient tool for identifying the various method steps, and is not intended to limit the order in which the method steps are arranged or the scope of the invention in which the invention may be practiced, and changes or modifications in the relative relationship may be made without substantially changing the technical content.
The preparation process and the excellent results of the present invention will be further illustrated with reference to the following examples, but the contents of the present invention are not limited to the following examples.
Example 1
1. Experimental Material
50 kg of polyvinyl chloride resin A (S-75); 50 kg of polyvinyl chloride resin B (S-85); 30 kg of plasticizer dioctyl terephthalate; 20 kg of plasticizer halogenated polyether fatty acid ester; 10 kilograms of nano active calcium carbonate (SPSL-1); 30 kg of high-purity magnesium hydroxide (MAGNIFINH5) by a bottom precipitation method; 15 kg of precipitation method aluminum hydroxide (Martinalol-104 LEO); 5 kg of nano-scale titanium dioxide; 6 kg of environment-friendly calcium-zinc composite stabilizer (MC91717 KA); 1.2 kg of hindered benzoate light stabilizer (CYASORBUV-2908); benzophenone ultraviolet absorbent (CHIMASSORB81)2.5 kg; calcined pottery clay 10 kg.
2. The preparation method comprises the following steps:
a. 50 kg of polyvinyl chloride resin B (S-85); 30 kg of plasticizer dioctyl terephthalate; 20 kg of plasticizer halogenated polyether fatty acid ester; 10 kilograms of nano active calcium carbonate (SPSL-1); 30 kg of high-purity magnesium hydroxide (MAGNIFINH5) by a bottom precipitation method; 15 kg of precipitation method aluminum hydroxide (Martinalol-104 LEO); 5 kg of nano-scale titanium dioxide; 6 kg of environment-friendly calcium-zinc composite stabilizer (MC91717 KA); 1.2 kg of hindered benzoate light stabilizer (CYASORB UV-2908); benzophenone ultraviolet absorbent (CHIMASSORB81)2.5 kg; calcining 10 kg of argil, sequentially putting the argil into a high-speed kneader, heating and stirring at a high speed, controlling the temperature of the high-speed kneader to be 90-110 ℃, and kneading for 9-12 minutes;
b. directly feeding the uniformly stirred raw materials into a double-screw material making machine for extrusion material making, and uniformly dividing the heating temperature of each section of the double-screw material making machine from 125 plus materials to 160 ℃ according to the number of the heating sections;
c. and drying the extruded and manufactured finished product, packaging and warehousing.
Example 2:
1. experimental Material
50 kg of polyvinyl chloride resin A (S-75); 50 kg of polyvinyl chloride resin B (S-85); 40 kg of plasticizer dioctyl terephthalate; 15 kg of plasticizer halogenated polyether fatty acid ester; 15 kg of nano active calcium carbonate (SPSL-1); 35 kg of high-purity magnesium hydroxide (MAGNIFINH5) by a bottom precipitation method; 20 kg of precipitation aluminium hydroxide (Martinalol-104 LEO); 5 kg of nano-scale titanium dioxide; 8 kg of environment-friendly calcium-zinc composite stabilizer (MC91717 KA); 1.8 kg of hindered benzoate light stabilizer (CYASORBUV-2908); benzophenone ultraviolet absorber (CHIMASSORB81)3 kg; 15 kg of calcined pottery clay.
2. The preparation method comprises the following steps:
a. 50 kg of polyvinyl chloride resin A (S-75); 50 kg of polyvinyl chloride resin B (S-85); 40 kg of plasticizer dioctyl terephthalate; 15 kg of plasticizer halogenated polyether fatty acid ester; 15 kg of nano active calcium carbonate (SPSL-1); 35 kg of high-purity magnesium hydroxide (MAGNIFINH5) by a bottom precipitation method; 20 kg of precipitation aluminium hydroxide (Martinalol-104 LEO); 5 kg of nano-scale titanium dioxide; 8 kg of environment-friendly calcium-zinc composite stabilizer (MC91717 KA); 1.8 kg of hindered benzoate light stabilizer (CYASORBUV-2908); benzophenone ultraviolet absorber (CHIMASSORB81)3 kg; calcining 15 kg of argil, sequentially putting the argil into a high-speed kneader, heating and stirring at a high speed, controlling the temperature of the high-speed kneader to be 90-110 ℃, and kneading for 9-12 minutes;
b. directly feeding the uniformly stirred raw materials into a double-screw material making machine for extrusion material making, and uniformly dividing the heating temperature of each section of the double-screw material making machine from 125 plus materials to 160 ℃ according to the number of the heating sections;
c. and drying the extruded and manufactured finished product, packaging and warehousing.
Example 3:
1. experimental Material
50 kg of polyvinyl chloride resin A (S-75); 50 kg of polyvinyl chloride resin B (S-85); 50 kg of plasticizer dioctyl terephthalate; 10 kilograms of plasticizer halogenated polyether fatty acid ester; 10 kilograms of nano active calcium carbonate (SPSL-1); 40 kg of high-purity magnesium hydroxide (MAGNIFINH5) by a bottom precipitation method; 15 kg of precipitation method aluminum hydroxide (Martinalol-104 LEO); 10 kg of nano-scale titanium dioxide; 8 kg of environment-friendly calcium-zinc composite stabilizer (MC91717 KA); 1.8 kg of hindered benzoate light stabilizer (CYASORBUV-2908); benzophenone ultraviolet absorbent (CHIMASSORB81)2 kg; 20 kg of calcined pottery clay.
2. The preparation method comprises the following steps:
a. 50 kg of polyvinyl chloride resin A (S-75); 50 kg of polyvinyl chloride resin B (S-85); 50 kg of plasticizer dioctyl terephthalate; 10 kilograms of plasticizer halogenated polyether fatty acid ester; 10 kilograms of nano active calcium carbonate (SPSL-1); 40 kg of high-purity magnesium hydroxide (MAGNIFINH5) by a bottom precipitation method; 15 kg of precipitation method aluminum hydroxide (Martinalol-104 LEO); 10 kg of nano-scale titanium dioxide; 8 kg of environment-friendly calcium-zinc composite stabilizer (MC91717 KA); 1.8 kg of hindered benzoate light stabilizer (CYASORBUV-2908); benzophenone ultraviolet absorbent (CHIMASSORB81)2 kg; calcining 20 kg of argil, sequentially putting the argil into a high-speed kneader, heating and stirring at a high speed, controlling the temperature of the high-speed kneader to be 90-110 ℃, and kneading for 9-12 minutes;
b. directly feeding the uniformly stirred raw materials into a double-screw material making machine for extrusion material making, and uniformly dividing the heating temperature of each section of the double-screw material making machine from 125 plus materials to 160 ℃ according to the number of the heating sections;
c. and drying the extruded and manufactured finished product, packaging and warehousing.
Example 4:
1. experimental Material
50 kg of polyvinyl chloride resin A (S-75); 50 kg of polyvinyl chloride resin B (S-85); 35 kg of plasticizer dioctyl terephthalate; 20 kg of plasticizer halogenated polyether fatty acid ester; 20 kg of nano active calcium carbonate (SPSL-1); 10 kg of high-purity magnesium hydroxide (MAGNIFINH5) by a bottom precipitation method; 30 kg of precipitation method aluminum hydroxide (Martinalol-104 LEO); 10 kg of nano-scale titanium dioxide; 8 kg of environment-friendly calcium-zinc composite stabilizer (MC91717 KA); 1 kg of hindered benzoate light stabilizer (CYASORBUV-2908); benzophenone ultraviolet absorbent (CHIMASSORB81)2.5 kg; 15 kg of calcined pottery clay.
2. The preparation method comprises the following steps:
a. 50 kg of polyvinyl chloride resin A (S-75); 50 kg of polyvinyl chloride resin B (S-85); 35 kg of plasticizer dioctyl terephthalate; 20 kg of plasticizer halogenated polyether fatty acid ester; 20 kg of nano active calcium carbonate (SPSL-1); 10 kg of high-purity magnesium hydroxide (MAGNIFINH5) by a bottom precipitation method; 30 kg of precipitation method aluminum hydroxide (Martinalol-104 LEO); 10 kg of nano-scale titanium dioxide; 8 kg of environment-friendly calcium-zinc composite stabilizer (MC91717 KA); 1 kg of hindered benzoate light stabilizer (CYASORBUV-2908); benzophenone ultraviolet absorbent (CHIMASSORB81)2.5 kg; calcining 15 kg of argil, sequentially putting the argil into a high-speed kneader, heating and stirring at a high speed, controlling the temperature of the high-speed kneader to be 90-110 ℃, and kneading for 9-12 minutes;
b. directly feeding the uniformly stirred raw materials into a double-screw material making machine for extrusion material making, and uniformly dividing the heating temperature of each section of the double-screw material making machine from 125 plus materials to 160 ℃ according to the number of the heating sections;
c. and drying the extruded and manufactured finished product, packaging and warehousing.
Comparative example
The conventional polyvinyl chloride insulating material (Shanghai Kaibo CVC7071) for the overhead cable in the current market is used as a comparative product.
The inventors compare and detect the performance of the tracking-resistant polyvinyl chloride insulating material prepared in the above embodiments 1 to 4 with the commercial polyvinyl chloride insulating material for overhead cables (comparative example), and see the following table 1 for the specific detection results:
TABLE 1 tracking resistance of insulating material for polyvinyl chloride
Test with reference to GB/T6553-2003 and IEC60587-2007 Standard
As can be seen from the data in table 1, compared with the prior art, the beneficial effects of the present invention are: on the basis of meeting all requirements of the polyvinyl chloride insulating material in GB/T12527-2008, the tracking resistance is effectively improved, the service life of the polyvinyl chloride insulating overhead cable can be prolonged through a 1A 2.5-level tracking resistance test (according to GB/T6553-2014), and the safety of an overhead transmission line is ensured.
In conclusion, the present invention effectively overcomes various disadvantages of the prior art and has high industrial utilization value.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The tracking-resistant polyvinyl chloride insulating material is characterized by comprising the following components in parts by weight: 80-100 parts of polyvinyl chloride resin, 40-70 parts of plasticizer, 10-20 parts of nano-grade active calcium carbonate, 30-80 parts of tracking resistance modifier, 6-8 parts of heat stabilizer, 1-1.8 parts of light stabilizer, 2-3 parts of ultraviolet absorbent and 10-20 parts of electrical property modifier.
2. The tracking-resistant polyvinyl chloride insulating material according to claim 1, wherein the polyvinyl chloride resin is a polyvinyl chloride resin A and a polyvinyl chloride resin B in a mass ratio of 1: 1 is compounded; wherein the polymerization degree of the polyvinyl chloride resin A is 1400-class 1500, and the polymerization degree of the polyvinyl chloride resin B is 2300-class 2700.
3. The tracking-resistant polyvinyl chloride insulating material according to claim 1, wherein the plasticizer is a plasticizer A and a plasticizer B which are mixed according to a mass ratio of (1-3): 1 is compounded; wherein the plasticizer A is dioctyl terephthalate, and the plasticizer B is halogenated polyether fatty acid ester.
4. The tracking-resistant polyvinyl chloride insulating material according to claim 1, wherein the tracking-resistant modifier is a tracking-resistant modifier A, a tracking-resistant modifier B and a tracking-resistant modifier C, and the tracking-resistant modifier C is prepared from the following components in a mass ratio of (1-7): (1-4): 1 is compounded; the tracking resistance modifier A is magnesium hydroxide, the tracking resistance modifier B is aluminum hydroxide, and the tracking resistance modifier C is nano-scale titanium dioxide.
5. The tracking resistant polyvinyl chloride insulation material of claim 1, wherein said thermal stabilizer is a powdery calcium-zinc composite thermal stabilizer; and the light stabilizer is hindered benzoate light stabilizer.
6. The tracking resistant polyvinyl chloride insulation of claim 1 wherein said ultraviolet absorber is a benzophenone-based ultraviolet absorber; the electrical property modifier is calcined argil.
7. The method for preparing the tracking-resistant polyvinyl chloride insulating material according to claim 1, which comprises the following steps:
(1) weighing raw materials according to the composition ratio disclosed in claim 1, and putting the raw materials into a high-speed kneader for heating and stirring to obtain a uniform mixture;
(2) and extruding and granulating the uniformly stirred mixture through a double-screw granulator, and then drying to obtain the tracking-resistant polyvinyl chloride insulating material.
8. The method for preparing tracking resistance polyvinyl chloride insulating material according to claim 7, wherein in the step (1), the kneading heating temperature is 90 ℃ to 110 ℃, and the kneading time is 9 min to 12 min.
9. The method as claimed in claim 7, wherein in the step (2), the heating temperature of each section of the twin-screw granulator is divided equally from 125-160 ℃ according to the number of the heating sections.
10. Use of a tracking-resistant polyvinyl chloride insulation material according to claim 1 or prepared by a process according to claim 7 in an overhead insulated cable.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN201911267030.8A CN110951188B (en) | 2019-12-11 | 2019-12-11 | Tracking-resistant polyvinyl chloride insulating material and preparation method and application thereof |
| PCT/CN2020/113279 WO2021114755A1 (en) | 2019-12-11 | 2020-09-03 | Electrical tracking-resistant polyvinyl chloride insulating material, preparation method therefor and application thereof |
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| CN201911267030.8A CN110951188B (en) | 2019-12-11 | 2019-12-11 | Tracking-resistant polyvinyl chloride insulating material and preparation method and application thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021114755A1 (en) * | 2019-12-11 | 2021-06-17 | 上海凯波特种电缆料厂有限公司 | Electrical tracking-resistant polyvinyl chloride insulating material, preparation method therefor and application thereof |
| CN116859537A (en) * | 2023-07-11 | 2023-10-10 | 东莞市晟钫实业有限公司 | Composite optical fiber wire and preparation method thereof |
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| CN110951188B (en) * | 2019-12-11 | 2021-05-04 | 上海凯波电缆特材股份有限公司 | Tracking-resistant polyvinyl chloride insulating material and preparation method and application thereof |
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| CN116859537A (en) * | 2023-07-11 | 2023-10-10 | 东莞市晟钫实业有限公司 | Composite optical fiber wire and preparation method thereof |
| CN116859537B (en) * | 2023-07-11 | 2024-06-07 | 东莞市晟钫实业有限公司 | Composite optical fiber wire and preparation method thereof |
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| WO2021114755A1 (en) | 2021-06-17 |
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