CN114957868A - Low-temperature-55-degree-resistant sheath material - Google Patents
Low-temperature-55-degree-resistant sheath material Download PDFInfo
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- CN114957868A CN114957868A CN202210720987.9A CN202210720987A CN114957868A CN 114957868 A CN114957868 A CN 114957868A CN 202210720987 A CN202210720987 A CN 202210720987A CN 114957868 A CN114957868 A CN 114957868A
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- sheath material
- low temperature
- resistant sheath
- polytetrafluoroethylene
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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
- C08L23/26—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers modified by chemical after-treatment
- C08L23/28—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers modified by chemical after-treatment by reaction with halogens or compounds containing halogen
- C08L23/286—Chlorinated polyethylene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F114/00—Homopolymers 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
- C08F114/18—Monomers containing fluorine
- C08F114/26—Tetrafluoroethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F4/00—Polymerisation catalysts
- C08F4/40—Redox systems
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F8/00—Chemical modification by after-treatment
- C08F8/18—Introducing halogen atoms or halogen-containing groups
- C08F8/20—Halogenation
- C08F8/22—Halogenation by reaction with free halogens
-
- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
Abstract
The invention relates to the technical field of cable sheath materials, and discloses a low-temperature-resistant 55-degree sheath material which comprises the following raw materials in parts by weight: 40-50 parts of chlorinated polyethylene, 20-35 parts of polytetrafluoroethylene, 5-8 parts of talcum powder, 15-20 parts of bauxite, 5-8 parts of chlorinated paraffin, 1-1.5 parts of magnesium oxide, 3-5 parts of precipitated white carbon black, 30-35 parts of calcium carbonate, 1-1.5 parts of paraffin, 0.5-1 part of N-isopropyl-N-phenyl-p-phenylenediamine, 2-3 parts of dicumyl peroxide and 2-4 parts of triallyl isocyanurate. The low temperature-55-degree-resistant sheath material has the low temperature resistance far higher than minus 55 degrees, ensures the service life of the cable, has lower requirements on the component distribution in the preparation process, and reduces the cost input.
Description
Technical Field
The invention relates to the technical field of cable sheath materials, in particular to a low temperature-55 ℃ resistant sheath material.
Background
Because the power cable is often used in some severe environments, the requirements on the waterproof and ageing resistance of the power cable are extremely high in the long-term use process, and the requirements on the toughness of the power cable are also higher in the environment which often needs to be pulled.
The patent number is CN103342840B, and discloses a low-temperature-resistant cable sheath material which is composed of the following raw materials in parts by weight: neoprene A9095-102, polyurethane 12-14, bauxite 17-20, alum powder 6-7, a modified filler 16-24, oxidized polyethylene wax 3-6, adipic acid propylene glycol polyester 5-7, an anti-aging agent MB1-2, magnesium oxide 1-2, aniline methyl triethoxysilane 1-2, ethylene diamine tetra methylene phosphonic acid sodium 3-4, 1, 6-hexamethylene diamine 1-2, a vulcanizing agent DCBP0.8-1, and decabromodiphenyl ether 1-2; the cable sheath material produced by the invention has excellent physical properties, stable size, low shrinkage rate, strong tensile strength, tear strength and resilience performance, good oil resistance, heat resistance, flame resistance, sunlight resistance, ozone resistance, acid and alkali resistance and chemical reagent resistance, good dispersibility and low surface tension, further improves the tensile strength and stretching stress of the cable material, reduces heat generation and compression permanent deformation, can delay the aging speed of the cable material, resists acid and alkali corrosion and reduces the production cost.
The cable sheath material prepared in the scheme has unreasonable low-temperature resistance, and the cable placing environment is harsh, so the components of a single sheath material cannot meet the requirements of ultra-strong low-temperature resistance.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides the low temperature-55 ℃ resistant sheath material, the low temperature resistance is far higher than minus 55 ℃, the service life of the cable is ensured, the requirements of component materials in the preparation process are lower, the cost investment is reduced, and the problem that the low temperature resistance of the conventional cable sheath material is not reasonable enough is solved.
(II) technical scheme
In order to achieve the purpose, the invention provides the following technical scheme: the low temperature-55 ℃ resistant sheath material comprises the following raw materials in parts by weight: 40-50 parts of chlorinated polyethylene, 20-35 parts of polytetrafluoroethylene, 5-8 parts of talcum powder, 15-20 parts of bauxite, 5-8 parts of chlorinated paraffin, 1-1.5 parts of magnesium oxide, 3-5 parts of precipitated white carbon black, 30-35 parts of calcium carbonate, 1-1.5 parts of paraffin, 0.5-1 part of N-isopropyl-N-phenyl-p-phenylenediamine, 2-3 parts of dicumyl peroxide and 2-4 parts of triallyl isocyanurate.
Preferably, the chlorinated polyethylene adopts the following preparation process:
firstly, crushing a polyethylene thin raw material and then putting the crushed polyethylene thin raw material into a reaction kettle;
secondly, adding an initiator and a dispersing agent into the reaction kettle, introducing chlorine into the reaction kettle, and chlorinating the reaction kettle by the chlorine, wherein hydrogen chloride gas released in the chlorination process is absorbed by an acid absorption tank;
and step three, measuring the weight of the hydrogen chloride gas absorbed by the acid absorption tank, and if the weight increase stops, indicating that the reaction is finished.
Preferably, the polytetrafluoroethylene adopts the following preparation process:
firstly, selecting quantitative potassium persulfate, ammonium perfluorocarboxylate, fluorocarbon and tetrafluoroethylene monomers, and pouring the potassium persulfate, the ammonium perfluorocarboxylate, the fluorocarbon and tetrafluoroethylene monomers into a stainless steel polymerization kettle;
step two, adding water and a sodium metabisulfite activating agent into a stainless steel polymerization kettle;
and step three, introducing a tetrafluoroethylene monomer into a polymerization kettle in a gas phase, adjusting the internal temperature of the polymerization kettle to 25 ℃, and finally performing redox polymerization to obtain the polytetrafluoroethylene.
Preferably, the potassium persulfate is used as an initiator, the ammonium perfluorocarboxylate is used as a dispersing agent, the fluorocarbon is used as a stabilizer, and the tetrafluoroethylene is used as an oxidant.
Preferably, the magnesium oxide is prepared by taking seawater as a raw material, adding an alkaline substance into the seawater to precipitate magnesium ions, and finally calcining the magnesium ions.
Preferably, the alkaline substance is calcium hydroxide.
Preferably, the talcum powder, the bauxite, the chlorinated paraffin, the magnesium oxide, the precipitated silica, the calcium carbonate, the paraffin, the N-isopropyl-N-phenyl-p-phenylenediamine, the dicumyl peroxide and the triallyl isocyanurate are poured into a reaction kettle to be mixed and prepared, after the raw materials are prepared, the chlorinated polyethylene and the polytetrafluoroethylene are simultaneously added into the reaction kettle, after the materials are added, the materials are fully stirred for 10 to 20 minutes at 50 to 68 ℃, the filtrate is filtered and removed, then the materials are stirred and dispersed for 10 to 20 minutes at the rotating speed of 2500 revolutions per minute, the temperature is heated to 70 to 80 ℃, and the materials are cooled and dried.
Preferably, the low temperature resistance value of the sheath material added with polytetrafluoroethylene is greater than 55 ℃.
(III) advantageous effects
Compared with the prior art, the invention provides a low temperature-55 ℃ resistant sheath material, which has the following beneficial effects:
1. according to the low temperature-55-degree-resistant sheath material, the polytetrafluoroethylene component is added into the components, so that the low temperature resistance of the sheath material can be improved, the low temperature resistance is far greater than minus 55 degrees, the protection effect on a cable is improved, and the service life of the cable is ensured.
2. The preparation process of the low temperature-55 ℃ resistant sheath material and chlorinated polyethylene comprises the steps of crushing a polyethylene thin raw material and putting the crushed polyethylene thin raw material into a reaction kettle; adding an initiator and a dispersing agent into a reaction kettle, introducing chlorine into the reaction kettle, and chlorinating the reaction kettle by the chlorine, wherein hydrogen chloride gas released in the chlorination process is absorbed by an acid absorption tank; the weight of the hydrogen chloride gas absorbed by the acid absorption tank is measured, and if the weight is increased and stopped, the reaction is finished, the chlorination reaction can be carried out at a lower temperature in the process, the reaction is easy to occur, the required investment cost is lower, and the production process is green and environment-friendly.
3. The low temperature-55 ℃ resistant sheath material and the polytetrafluoroethylene preparation process select quantitative persulfuric acid, ammonium salt of perfluoro carboxylic acid, fluorocarbon and tetrafluoroethylene monomer, pour potassium persulfate, ammonium salt of perfluoro carboxylic acid, fluorocarbon and tetrafluoroethylene into a stainless steel polymerization kettle, add water and sodium metabisulfite activating agent into the stainless steel polymerization kettle, the tetrafluoroethylene monomer enters the polymerization kettle in gas phase, adjust the internal temperature of the polymerization kettle to 25 ℃, and finally prepare polytetrafluoroethylene through redox polymerization.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to 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.
The low temperature-55 ℃ resistant sheath material comprises the following raw materials in parts by weight: 40-50 parts of chlorinated polyethylene, 20-35 parts of polytetrafluoroethylene, 5-8 parts of talcum powder, 15-20 parts of bauxite, 5-8 parts of chlorinated paraffin, 1-1.5 parts of magnesium oxide, 3-5 parts of precipitated white carbon black, 30-35 parts of calcium carbonate, 1-1.5 parts of paraffin, 0.5-1 part of N-isopropyl-N-phenyl-p-phenylenediamine, 2-3 parts of dicumyl peroxide and 2-4 parts of triallyl isocyanurate.
The chlorinated polyethylene adopts the following preparation process:
firstly, crushing a polyethylene thin raw material and then putting the crushed polyethylene thin raw material into a reaction kettle;
secondly, adding an initiator and a dispersing agent into the reaction kettle, introducing chlorine into the reaction kettle, and chlorinating the reaction kettle by the chlorine, wherein hydrogen chloride gas released in the chlorination process is absorbed by an acid absorption tank;
and step three, measuring the weight of the hydrogen chloride gas absorbed by the acid absorption tank, and if the weight increase stops, indicating that the reaction is finished.
The polytetrafluoroethylene adopts the following preparation process:
firstly, selecting quantitative potassium persulfate, ammonium perfluorocarboxylate, fluorocarbon and tetrafluoroethylene monomers, and pouring the potassium persulfate, the ammonium perfluorocarboxylate, the fluorocarbon and the tetrafluoroethylene into a stainless steel polymerization kettle;
step two, adding water and a sodium metabisulfite activating agent into a stainless steel polymerization kettle;
and step three, feeding a tetrafluoroethylene monomer into a polymerization kettle in a gas phase, adjusting the internal temperature of the polymerization kettle to be 25 ℃, and finally performing redox polymerization to obtain the polytetrafluoroethylene.
Potassium persulfate is used as an initiator, ammonium perfluorocarboxylate is used as a dispersing agent, fluorocarbon is used as a stabilizing agent, and tetrafluoroethylene is used as an oxidizing agent.
The magnesium oxide is prepared by taking seawater as a raw material, adding an alkaline substance into the seawater to precipitate magnesium ions, and finally calcining the obtained product to obtain the magnesium oxide, wherein the alkaline substance is calcium hydroxide, and the preparation process is environment-friendly.
Pouring talcum powder, bauxite, chlorinated paraffin, magnesium oxide, precipitated white carbon black, calcium carbonate, paraffin, N-isopropyl-N-phenyl-p-phenylenediamine, dicumyl peroxide and triallyl isocyanurate into a reaction kettle for raw material mixing preparation, adding chlorinated polyethylene and polytetrafluoroethylene into the reaction kettle simultaneously after the raw material preparation is finished, fully stirring for 10-20 minutes at 50-68 ℃ after the addition is finished, filtering to remove filtrate, stirring and dispersing for 10-20 minutes at the rotating speed of 2500 rpm, heating to 70-80 ℃, cooling and drying.
The low temperature resistance value of the sheath material added with the polytetrafluoroethylene is more than 55 ℃.
In conclusion, when the low temperature-55-degree-resistant sheath material is used, the polytetrafluoroethylene is added into the components, so that the low temperature resistance of the sheath material can be improved, the low temperature resistance is far higher than minus 55 degrees, the protection effect on a cable is improved, and the service life of the cable is ensured.
It is to be noted that the term "comprises," "comprising," or any other variation thereof is intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The low-temperature-55-degree-resistant sheath material is characterized by comprising the following raw materials in parts by weight: 40-50 parts of chlorinated polyethylene, 20-35 parts of polytetrafluoroethylene, 5-8 parts of talcum powder, 15-20 parts of bauxite, 5-8 parts of chlorinated paraffin, 1-1.5 parts of magnesium oxide, 3-5 parts of precipitated white carbon black, 30-35 parts of calcium carbonate, 1-1.5 parts of paraffin, 0.5-1 part of N-isopropyl-N-phenyl-p-phenylenediamine, 2-3 parts of dicumyl peroxide and 2-4 parts of triallyl isocyanurate.
2. The low temperature-55 ℃ resistant sheath material according to claim 1, characterized in that: the chlorinated polyethylene adopts the following preparation process:
firstly, crushing a polyethylene thin raw material and then putting the crushed polyethylene thin raw material into a reaction kettle;
secondly, adding an initiator and a dispersing agent into the reaction kettle, introducing chlorine into the reaction kettle, and chlorinating the reaction kettle by the chlorine, wherein hydrogen chloride gas released in the chlorination process is absorbed by an acid absorption tank;
and step three, measuring the weight of the hydrogen chloride gas absorbed by the acid absorption tank, and if the weight increase stops, indicating that the reaction is finished.
3. The low temperature-55 ℃ resistant sheath material according to claim 1, characterized in that: the polytetrafluoroethylene adopts the following preparation process:
firstly, selecting quantitative potassium persulfate, ammonium perfluorocarboxylate, fluorocarbon and tetrafluoroethylene monomers, and pouring the potassium persulfate, the ammonium perfluorocarboxylate, the fluorocarbon and the tetrafluoroethylene into a stainless steel polymerization kettle;
step two, adding water and a sodium metabisulfite activating agent into a stainless steel polymerization kettle;
and step three, introducing a tetrafluoroethylene monomer into a polymerization kettle in a gas phase, adjusting the internal temperature of the polymerization kettle to 25 ℃, and finally performing redox polymerization to obtain the polytetrafluoroethylene.
4. The low temperature-55 ℃ resistant sheath material according to claim 3, characterized in that: the potassium persulfate is used as an initiator, the ammonium perfluorocarboxylate is used as a dispersing agent, the fluorocarbon is used as a stabilizing agent, and the tetrafluoroethylene is used as an oxidizing agent.
5. The low temperature-55 ℃ resistant sheath material according to claim 1, characterized in that: the magnesium oxide is prepared by taking seawater as a raw material, adding an alkaline substance into the seawater to precipitate magnesium ions, and finally calcining the magnesium ions.
6. The low temperature-55 ℃ resistant sheath material according to claim 5, characterized in that: the alkaline substance is calcium hydroxide.
7. The low temperature-55 ℃ resistant sheath material according to claim 1, characterized in that: pouring the talcum powder, the bauxite, the chlorinated paraffin, the magnesium oxide, the precipitated white carbon black, the calcium carbonate, the paraffin, the N-isopropyl-N-phenyl-p-phenylenediamine, the dicumyl peroxide and the triallyl isocyanurate into a reaction kettle for raw material mixing preparation, adding the chlorinated polyethylene and the polytetrafluoroethylene into the reaction kettle simultaneously after the raw material preparation is finished, fully stirring for 10-20 minutes at 50-68 ℃ after the addition is finished, filtering to remove filtrate, then stirring and dispersing for 10-20 minutes at the rotating speed of 2500 rpm, heating to 70-80 ℃, cooling and drying.
8. The low temperature-55 ℃ resistant sheath material according to claim 1, characterized in that: the low temperature resistance value of the sheath material added with the polytetrafluoroethylene is greater than 55 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210720987.9A CN114957868A (en) | 2022-06-24 | 2022-06-24 | Low-temperature-55-degree-resistant sheath material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210720987.9A CN114957868A (en) | 2022-06-24 | 2022-06-24 | Low-temperature-55-degree-resistant sheath material |
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| CN114957868A true CN114957868A (en) | 2022-08-30 |
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| CN202210720987.9A Pending CN114957868A (en) | 2022-06-24 | 2022-06-24 | Low-temperature-55-degree-resistant sheath material |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102399397A (en) * | 2011-09-29 | 2012-04-04 | 江苏亨通电力电缆有限公司 | Cold-resistant rubber cable sheath material and preparation method |
| CN103342840A (en) * | 2013-06-04 | 2013-10-09 | 安徽荣玖光纤通信科技有限公司 | Low temperature resistant cable sheath material |
| CN105295268A (en) * | 2015-10-29 | 2016-02-03 | 宁贻伟 | High-temperature-resistant cable sheath |
| CN106147050A (en) * | 2015-03-31 | 2016-11-23 | 安徽华润仪表线缆有限公司 | A kind of high abrasion chlorinated polyethylene cable sheath material |
-
2022
- 2022-06-24 CN CN202210720987.9A patent/CN114957868A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102399397A (en) * | 2011-09-29 | 2012-04-04 | 江苏亨通电力电缆有限公司 | Cold-resistant rubber cable sheath material and preparation method |
| CN103342840A (en) * | 2013-06-04 | 2013-10-09 | 安徽荣玖光纤通信科技有限公司 | Low temperature resistant cable sheath material |
| CN106147050A (en) * | 2015-03-31 | 2016-11-23 | 安徽华润仪表线缆有限公司 | A kind of high abrasion chlorinated polyethylene cable sheath material |
| CN105295268A (en) * | 2015-10-29 | 2016-02-03 | 宁贻伟 | High-temperature-resistant cable sheath |
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