CN110894315A - Graphene modified self-extinguishing flame-retardant polyolefin conductive material and preparation method thereof - Google Patents
Graphene modified self-extinguishing flame-retardant polyolefin conductive material and preparation method thereof Download PDFInfo
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- CN110894315A CN110894315A CN201911268129.XA CN201911268129A CN110894315A CN 110894315 A CN110894315 A CN 110894315A CN 201911268129 A CN201911268129 A CN 201911268129A CN 110894315 A CN110894315 A CN 110894315A
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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
- C08L23/06—Polyethene
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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
- C08L23/0807—Copolymers of ethene with unsaturated hydrocarbons only containing more than three carbon atoms
- C08L23/0815—Copolymers of ethene with aliphatic 1-olefins
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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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- 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
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- 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
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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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
- 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 graphene modified self-extinguishing flame-retardant polyolefin conductive material and a preparation method thereof. The polyolefin resin, the lubricant, the antioxidant, the graphene and the flame retardant are put into a double-screw extruder according to the proportion and are uniformly mixed; then extruding, granulating and drying. The graphene modified self-extinguishing flame-retardant polyolefin semiconductive material provided by the invention has excellent mechanical properties and conductivity, is completely environment-friendly, has a fine extrusion surface, is good in self-extinguishing property and excellent in flame-retardant property, is suitable for a medium-high voltage cable semiconductive outer shielding layer with high flame-retardant requirements, environmental protection requirements and the like, is matched with a flame-retardant sheath for use, and can better ensure the normal use and operation of a cable.
Description
Technical Field
The invention relates to the technical field of cable preparation, in particular to a graphene modified self-extinguishing flame-retardant polyolefin conductive material and a preparation method thereof.
Background
With the improvement of environmental protection and safety consciousness of various countries in the world, the flame-retardant environment-friendly cable material is widely applied and has great development potential. In particular to the field of medium and high voltage transmission. The halogen-free flame-retardant semiconductive material for the flame-retardant cable is developed correspondingly to the requirements of customers, and partial problems are solved to a certain extent, but due to the consideration of the requirements of low smoke and zero halogen, the selected halogen-free flame retardant is not enough in the actual flame-retardant effect compared with halogen materials, and for large-size cables, the laying environment is relatively a pipeline or a buried environment, so that the self-extinguishing property of the cable is very important, particularly, in recent years, accidents such as fire disasters and the like caused by insufficient cable quality are frequent, and the attention degree of the society to the cable performance, particularly the flame-retardant property of the cable, is continuously enhanced.
Therefore, it is an urgent problem to be solved by those skilled in the art to provide a semiconductive material having good self-extinguishing properties, good conductivity, and good mechanical properties.
Disclosure of Invention
In view of the above, the invention provides a graphene modified self-extinguishing flame-retardant polyolefin conductive material. According to the invention, the carbon material graphene which is most concerned at present and the efficient environment-friendly flame retardant are selected, so that the preparation of the self-extinguishing flame-retardant polyolefin semiconductive material with excellent performance is possible, and the material has very good extrusion processing performance and also has excellent flame retardant performance, electric conductivity and mechanical performance.
In order to achieve the purpose, the invention adopts the following technical scheme:
the graphene modified self-extinguishing flame-retardant polyolefin conductive material comprises the following raw materials in parts by weight:
preferably, the polyolefin resin includes one or more of polyethylene resin (PE), ethylene-vinyl acetate copolymer (EVA), polyolefin elastomer (POE), and the like.
Preferably, the flame retardant is one or a mixture of antimony trioxide and decabromodiphenylethane.
Preferably, the lubricant is polyethylene wax; the antioxidant is any one of antioxidant 1010 or antioxidant DLTP.
Preferably, the graphene is graphene nanopowder with a lamellar structure.
The invention also aims to provide a preparation method of the graphene modified self-extinguishing flame-retardant polyolefin conductive material.
In order to achieve the purpose, the invention adopts the following technical scheme:
a preparation method of a graphene modified self-extinguishing flame-retardant polyolefin conductive material comprises the following steps:
1) weighing the raw materials, and putting the raw materials into a double-screw extruder according to the proportion to be uniformly mixed;
2) after being uniformly mixed, the mixture is extruded and granulated by a double-screw extruder and dried to obtain the product.
Preferably, the mixing temperature of the twin-screw extruder in the step 1) is 30-75 ℃, and the mixing time is 3-15 min.
Preferably, the extrusion temperature of the twin-screw extruder in the step 2) is 145-195 ℃.
Preferably, in the step 1), the extruder is a feeding extrusion granulation twin-screw extrusion granulator.
Preferably, in the step 2), the drying temperature is 70-85 ℃.
Preferably, in the step 2), the drying time is 1.0-3.0 h.
According to the technical scheme, compared with the prior art, the invention has the following beneficial effects:
the invention discloses a graphene modified self-extinguishing flame-retardant polyolefin semiconductive material and a preparation method thereof, wherein the carbon material graphene which is most concerned at present and a high-efficiency environment-friendly flame retardant are selected, so that the preparation of the self-extinguishing flame-retardant polyolefin semiconductive material with excellent performance is possible, and the material has very good extrusion processing performance, excellent flame-retardant performance, electric conductivity and mechanical performance and fine and smooth surface.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all 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 experimental materials used in the following examples are as follows:
polyolefin resin, lubricant, antioxidant, flame retardant, carbon nanotube, graphene and the like can be obtained by conventional market purchase.
Example 1
In the formula of the cable material, the name and the weight part ratio of each component are as follows:
selecting raw materials according to the proportion, fully mixing the accurately weighed resin and the auxiliary agent in a high-speed mixer, and then extruding and granulating in a double-screw extruder at the extrusion temperature of 145-195 ℃. And (3) drying after granulation, wherein the drying temperature is 80 ℃, and the drying time is 2h, thus obtaining the cable granules.
Example 2
In the formula of the cable material, the name and the weight part ratio of each component are as follows:
selecting raw materials according to the proportion, fully mixing the accurately weighed resin and the auxiliary agent in a high-speed mixer, and then extruding and granulating in a double-screw extruder at the extrusion temperature of 145-195 ℃. And (3) drying after granulation, wherein the drying temperature is 80 ℃, and the drying time is 2 hours, so as to obtain the cable granules.
Comparative example 1
In the formula of the cable material, the name and the weight part ratio of each component are as follows:
selecting raw materials according to the proportion, fully mixing the accurately weighed resin and the auxiliary agent in a high-speed mixer, and then extruding and granulating in a double-screw extruder at the extrusion temperature of 145-195 ℃. And (3) drying after granulation, wherein the drying temperature is 80 ℃, and the drying time is 2 hours, so as to obtain the cable granules.
Further, the graphene modified self-extinguishing flame-retardant polyolefin semiconductive materials prepared according to the mixture ratios in examples 1-2 and comparative example 1 were subjected to performance tests according to relevant standards, and the relevant performance results of the prepared cable materials are shown in table 1.
Table 1 cable material performance test results of examples 1-2 and comparative example 1
As can be seen from table 1 above, the graphene modified self-extinguishing flame retardant polyolefin semiconductive material prepared in the above embodiments 1-2 has a significantly improved flame retardant property after being modified by selecting graphene and a halogen-containing high-efficiency environment-friendly flame retardant. The prepared cable material has excellent electrical property and good self-extinguishing property, can be widely used for the conductive outer protective layer of the medium-high voltage flame-retardant cable, can effectively ensure the flame-retardant property and the safety property of the cable, can effectively prolong the service life of the cable, and has very positive significance for social safety benefits.
In conclusion, the graphene modified self-extinguishing flame-retardant polyolefin semiconductive material provided by the invention has excellent mechanical properties and electrical conductivity, is completely environment-friendly, has a fine extrusion surface, good self-extinguishing property and excellent flame-retardant property, is suitable for a medium-high voltage cable semiconductive outer shielding layer with high flame-retardant requirements, environmental protection requirements and the like, is matched with a flame-retardant sheath for use, and can better ensure the normal use and operation of a cable.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
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 (8)
1. The graphene modified self-extinguishing flame-retardant polyolefin conductive material is characterized by comprising the following raw materials in parts by weight:
2. the graphene-modified self-extinguishing flame-retardant polyolefin conductive material as claimed in claim 1, wherein the polyolefin resin comprises one or a mixture of polyethylene resin, ethylene-vinyl acetate copolymer and polyolefin elastomer.
3. The graphene-modified self-extinguishing flame-retardant polyolefin conductive material as claimed in claim 1, wherein the flame retardant is one or a mixture of antimony trioxide and decabromodiphenylethane.
4. The graphene-modified self-extinguishing flame-retardant polyolefin conductive material as claimed in claim 1, wherein the lubricant is polyethylene wax; the antioxidant is any one of antioxidant 1010 or antioxidant DLTP.
5. The graphene-modified self-extinguishing flame-retardant polyolefin conductive material according to claim 1, wherein the graphene is a graphene nanopowder with a lamellar structure.
6. A preparation method of a graphene modified self-extinguishing flame-retardant polyolefin conductive material is characterized by comprising the following steps:
1) weighing the raw materials of claims 1-5, and putting the raw materials into a double-screw extruder according to the proportion to be uniformly mixed;
2) after being uniformly mixed, the mixture is extruded and granulated by a double-screw extruder and dried to obtain the product.
7. The preparation method of the graphene modified self-extinguishing flame-retardant polyolefin conductive material as claimed in claim 6, wherein the mixing temperature of the twin-screw extruder in the step 1) is 30-75 ℃, and the mixing time is 3-15 min.
8. The method for preparing the graphene modified self-extinguishing flame-retardant polyolefin conductive material as claimed in claim 6, wherein the extrusion temperature of the twin-screw extruder in the step 2) is 145-195 ℃.
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| CN201911268129.XA CN110894315A (en) | 2019-12-11 | 2019-12-11 | Graphene modified self-extinguishing flame-retardant polyolefin conductive material and preparation method thereof |
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| CN201911268129.XA CN110894315A (en) | 2019-12-11 | 2019-12-11 | Graphene modified self-extinguishing flame-retardant polyolefin conductive material and preparation method thereof |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105462028A (en) * | 2014-09-03 | 2016-04-06 | 上海斯瑞科技有限公司 | Flame-retardant graphene conductive material for cable outer-layer structure and preparation method for flame-retardant graphene conductive material |
| CN109608732A (en) * | 2017-11-16 | 2019-04-12 | 山东方大新材料科技有限公司 | A kind of anti-electrostatic fire retardant type polyethylene composition, particle, tubing and its preparation method and the purposes as coal mine tubing |
| CN109880204A (en) * | 2019-01-15 | 2019-06-14 | 上海凯波特种电缆料厂有限公司 | Modified low smoke halogen-free flame-retardant polyolefin semiconductive material of a kind of graphene and preparation method thereof |
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- 2019-12-11 CN CN201911268129.XA patent/CN110894315A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105462028A (en) * | 2014-09-03 | 2016-04-06 | 上海斯瑞科技有限公司 | Flame-retardant graphene conductive material for cable outer-layer structure and preparation method for flame-retardant graphene conductive material |
| CN109608732A (en) * | 2017-11-16 | 2019-04-12 | 山东方大新材料科技有限公司 | A kind of anti-electrostatic fire retardant type polyethylene composition, particle, tubing and its preparation method and the purposes as coal mine tubing |
| CN109880204A (en) * | 2019-01-15 | 2019-06-14 | 上海凯波特种电缆料厂有限公司 | Modified low smoke halogen-free flame-retardant polyolefin semiconductive material of a kind of graphene and preparation method thereof |
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Address after: 201802 Shanghai City, Jiading District Nanxiang Town Yongle Village No. 271 Applicant after: Shanghai Kaibo cable special material Co.,Ltd. Address before: 201802 Shanghai City, Jiading District Nanxiang Town Yongle Village No. 271 Applicant before: SHANGHAI KAIBO COMPOUNDS Co.,Ltd. |
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Application publication date: 20200320 |