CN111777857A - Low-smoke halogen-free flame-retardant nylon sheath material for optical fibers and preparation method thereof - Google Patents
Low-smoke halogen-free flame-retardant nylon sheath material for optical fibers and preparation method thereof Download PDFInfo
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- CN111777857A CN111777857A CN202010703083.6A CN202010703083A CN111777857A CN 111777857 A CN111777857 A CN 111777857A CN 202010703083 A CN202010703083 A CN 202010703083A CN 111777857 A CN111777857 A CN 111777857A
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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
- C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
- C08L77/02—Polyamides derived from omega-amino carboxylic acids or from lactams thereof
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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
- H01B3/303—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups H01B3/38 or H01B3/302
- H01B3/305—Polyamides or polyesteramides
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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
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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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
- C08L2201/22—Halogen free composition
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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
- 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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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Health & Medical Sciences (AREA)
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- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
The invention relates to a low-smoke halogen-free flame-retardant nylon sheath material for optical fibers and a preparation method thereof, wherein the low-smoke halogen-free flame-retardant nylon sheath material is prepared by a two-step feeding method, and is prepared by nylon, maleic anhydride grafted POE, high-concentration black master batch, phosphorus-nitrogen flame retardant, PE wax, silicone master batch, antioxidant and anti-ultraviolet agent.
Description
The technical field is as follows:
the invention relates to the technical field of cable materials, in particular to a low-smoke halogen-free flame-retardant nylon sheath material for optical fibers and a preparation method thereof.
Background art:
with the rapid development of economy, the power industry in China is rapidly developed, the installed capacity of electric power and the generated energy of Chinese electric power are second to those of the United states and stably living in the world, the power supply construction is rapidly developed, the power grid construction is further leap and leap, the modernization degree of the modern power transmission technology and the system thereof is continuously improved, the power transmission line is third in the world after living in the United states and Russia in terms of the total length of the power transmission line, seven quart large-area power grids and 5 independent provinces in northeast China, North China, northwest China, east China, south China and Yuqing are formed in China, and the coverage rate of the power grid in the country is more than 96%.
In China, a bare conductor is mainly used in a low-voltage transmission line for a long time, with the continuous improvement of the modernization degree of the modern power transmission technology and the system thereof in China, the country invests huge capital to reform urban and rural power grids, and an overhead insulated cable has the incomparable advantages of the bare conductor in the aspects of electrical performance, safety performance, economic performance and the like, gradually replaces the bare conductor in a power supply system, and has very wide market prospect in addition to the overhead insulated cable used in a medium-high voltage transmission system.
However, there are many problems in the use performance of the overhead insulated cable, and one significant problem is: because the insulation material of the common overhead insulated cable is crosslinked polyethylene, under the normal use condition, various performances of the overhead insulated cable adopting the insulation are stable, and the service life of the overhead insulated cable can be kept about 20 to 30 years. However, many power transmission lines need to pass through forests or large forest areas, especially in humid areas, the insulation layer of the cable is easily damaged due to perennial scraping and grinding of branches and corrosion of biological communities and the like of the cable in the use environment, and the cable often cannot reach the normal design service life, so that the failure rate of the power transmission line is increased, the safety performance is reduced, and the line maintenance cost is increased.
The invention content is as follows:
the invention aims to provide a low-smoke halogen-free flame-retardant nylon sheath material for optical fibers, which has excellent thermal stability, higher mechanical strength, creep resistance, wear resistance, chemical resistance and self-lubricity, and a preparation method thereof.
The invention provides a low-smoke halogen-free flame-retardant nylon sheath material for optical fibers, which is prepared from the following raw materials in parts by weight:
40-60 parts of nylon;
10-20 parts of maleic anhydride grafted POE;
5-10 parts of high-concentration black master batch;
5-15 parts of phosphorus-nitrogen flame retardant;
5-10 parts of PE wax;
1-10 parts of silicone master batch;
1-5 parts of an antioxidant;
1-5 parts of an anti-ultraviolet agent.
In a preferred embodiment of the present invention, the nylon is nylon 6.
In a preferred embodiment of the invention, the high-concentration black master batch adopts black master batch with the carbon black content of 96-100%.
In a preferred embodiment of the invention, the silicone master batch adopts CDM50-010 silicone master batch.
The invention also provides a preparation method of the low-smoke halogen-free flame-retardant nylon sheath material for the optical fiber, which comprises the following steps:
(1) feeding a certain amount of nylon and maleic anhydride grafted POE into a stirring pot, simultaneously adding an antioxidant, an anti-ultraviolet agent, PE wax, a phosphorus-nitrogen flame retardant and silicone master batches, uniformly stirring, and then feeding into an internal mixer for internal mixing for 3-5 hours to obtain a premix;
(2) feeding the mixture after banburying and high-concentration black master batch into a double-screw plasticizing machine for plasticizing for 3-5 hours;
(3) and (4) feeding the plasticized mixture into a single-screw extruder for extrusion to obtain a finished product.
The invention has the beneficial effects that:
(1) the flame retardant property of the nylon sheath material is improved by using a phosphorus-nitrogen flame retardant system;
(2) the high-concentration black master is selected, so that the strength, the wear resistance and the aging resistance of the product are greatly improved;
(3) the special silicone master batch is selected as the lubricant, so that the compatibility of each component is greatly improved, and the wear resistance and the lubricating property are improved;
(4) the maleic anhydride grafted POE is selected as the toughening agent, so that the impact resistance, the cold resistance and the molding processability of the nylon sheath material are greatly improved, and the water absorption rate is reduced;
(5) the invention solves the compatibility problem of the nylon base material and the flame retardant, and the problem that the nylon material is too hard and difficult to process, and produces the high flame retardant, saline-alkali resistant environment-friendly flame retardant nylon sheath material;
(6) the product can be suitable for the problem that the outer sheath of the overhead line in the coastal region is easily corroded by salt fog by using common PE, so that the overhead line is easily subjected to spark in humid and hot seasons to cause fire.
The specific implementation mode is as follows:
the following detailed description of the preferred embodiments of the present invention is provided to enable those skilled in the art to more readily understand the advantages and features of the present invention and to clearly define the scope of the invention.
Example one
(1) 50 parts of nylon and 15 parts of maleic anhydride grafted POE are fed into a stirring pot, 3 parts of antioxidant, 3 parts of ultraviolet resistant agent, 7 parts of PE wax, 10 parts of phosphorus-nitrogen flame retardant and 6 parts of silicone master batch are added at the same time, and after uniform stirring, the mixture is fed into an internal mixer for internal mixing for 4 hours to obtain a premix;
(2) sending the mixture after banburying and 6 parts of high-concentration black master batch into a double-screw plasticizing machine for plasticizing for 5 hours;
(3) and (4) feeding the plasticized mixture into a single-screw extruder for extrusion to obtain a finished product.
Example two
(1) Feeding 47 parts of nylon and 18 parts of maleic anhydride grafted POE (polyolefin elastomer) into a stirring pot, simultaneously adding 2 parts of antioxidant, 2 parts of ultraviolet resistant agent, 6 parts of PE (polyethylene) wax, 8 parts of phosphorus-nitrogen flame retardant and 8 parts of silicone master batch, uniformly stirring, and then feeding into an internal mixer for banburying for 3 hours to obtain a premix;
(2) feeding the mixture after banburying and 9 parts of high-concentration black master batch into a double-screw plasticizing machine for plasticizing for 4 hours;
(3) and (4) feeding the plasticized mixture into a single-screw extruder for extrusion to obtain a finished product.
EXAMPLE III
(1) Feeding 40 parts of nylon and 20 parts of maleic anhydride grafted POE (polyolefin elastomer) into a stirring pot, simultaneously adding 5 parts of antioxidant, 5 parts of ultraviolet resistant agent, 5 parts of PE (polyethylene) wax, 5 parts of phosphorus-nitrogen flame retardant and 10 parts of silicone master batch, uniformly stirring, and then feeding into an internal mixer for banburying for 5 hours to obtain a premix;
(2) feeding the mixture after banburying and 10 parts of high-concentration black master batch into a double-screw plasticizing machine for plasticizing for 3 hours;
(3) and (4) feeding the plasticized mixture into a single-screw extruder for extrusion to obtain a finished product.
The performance parameters are shown in the following table:
| performance of | Example 1 | Example 2 | Example 3 |
| Hardness Shore A/Shore D | 83A | 78A | 72A |
| 100% strength at definite elongation Mpa | 2.9 | 3.3 | 2.3 |
| Tensile strength Mpa | 9.1 | 8.0 | 7.5 |
| Permanent deformation at break% | 73 | 70 | 65 |
| Elongation at break% | 400 | 450 | 420 |
| Tear Strength KN/m | 51 | 46 | 40 |
| UL94 flame retardant rating | V0 | V0 | V0 |
Finally, it should be noted that: the above embodiments are only used to illustrate the present invention and do not limit the technical solutions described in the present invention; thus, while the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted; all such modifications and variations are intended to be included herein within the scope of this disclosure and the present invention and protected by the following claims.
Claims (5)
1. The low-smoke halogen-free flame-retardant nylon sheath material for the optical fiber is characterized by being prepared from the following raw materials in parts by weight:
40-60 parts of nylon;
10-20 parts of maleic anhydride grafted POE;
5-10 parts of high-concentration black master batch;
5-15 parts of phosphorus-nitrogen flame retardant;
5-10 parts of PE wax;
1-10 parts of silicone master batch;
1-5 parts of an antioxidant;
1-5 parts of an anti-ultraviolet agent.
2. The low-smoke halogen-free flame-retardant nylon sheathing compound for the optical fiber according to claim 1, wherein nylon 6 is adopted as the nylon.
3. The low-smoke halogen-free flame-retardant nylon sheath material for the optical fiber according to claim 1, wherein the high-concentration black masterbatch is black masterbatch with a carbon black content of 96-100%.
4. The low-smoke halogen-free flame-retardant nylon sheathing compound for optical fibers according to claim 1, wherein the silicone masterbatch is CDM50-010 silicone masterbatch.
5. A method for preparing the low-smoke halogen-free flame-retardant nylon sheath material for the optical fiber according to any one of claims 1 to 4, which is characterized by comprising the following steps:
(1) feeding a certain amount of nylon and maleic anhydride grafted POE into a stirring pot, simultaneously adding an antioxidant, an anti-ultraviolet agent, PE wax, a phosphorus-nitrogen flame retardant and silicone master batches, uniformly stirring, and then feeding into an internal mixer for internal mixing for 3-5 hours to obtain a premix;
(2) feeding the mixture after banburying and high-concentration black master batch into a double-screw plasticizing machine for plasticizing for 3-5 hours;
(3) and (4) feeding the plasticized mixture into a single-screw extruder for extrusion to obtain a finished product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010703083.6A CN111777857A (en) | 2020-07-18 | 2020-07-18 | Low-smoke halogen-free flame-retardant nylon sheath material for optical fibers and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010703083.6A CN111777857A (en) | 2020-07-18 | 2020-07-18 | Low-smoke halogen-free flame-retardant nylon sheath material for optical fibers and preparation method thereof |
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| Publication Number | Publication Date |
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| CN111777857A true CN111777857A (en) | 2020-10-16 |
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| CN202010703083.6A Pending CN111777857A (en) | 2020-07-18 | 2020-07-18 | Low-smoke halogen-free flame-retardant nylon sheath material for optical fibers and preparation method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101760005A (en) * | 2008-12-26 | 2010-06-30 | 上海杰事杰新材料股份有限公司 | High-viscosity halogen-free flame-retardant polyamide composition |
| CN102618026A (en) * | 2012-04-25 | 2012-08-01 | 中国科学院宁波材料技术与工程研究所 | Halogen-free and flame-retardant nylon master batch with high CTI (Comparative Tracking Index) value and preparation method thereof |
| CN104672887A (en) * | 2013-12-02 | 2015-06-03 | 上海凯波特种电缆料厂有限公司 | Flame-retardant low-temperature-resistant nylon for ultra-thin wall cable sheath layer and preparation method of nylon |
| CN106497032A (en) * | 2016-10-25 | 2017-03-15 | 徐州腾飞工程塑料有限公司 | A kind of nylon corrugated tube composite material and preparation method thereof |
| CN110615987A (en) * | 2019-10-15 | 2019-12-27 | 山东省科学院能源研究所 | Halogen-free flame-retardant toughened nylon and preparation method and application thereof |
-
2020
- 2020-07-18 CN CN202010703083.6A patent/CN111777857A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101760005A (en) * | 2008-12-26 | 2010-06-30 | 上海杰事杰新材料股份有限公司 | High-viscosity halogen-free flame-retardant polyamide composition |
| CN102618026A (en) * | 2012-04-25 | 2012-08-01 | 中国科学院宁波材料技术与工程研究所 | Halogen-free and flame-retardant nylon master batch with high CTI (Comparative Tracking Index) value and preparation method thereof |
| CN104672887A (en) * | 2013-12-02 | 2015-06-03 | 上海凯波特种电缆料厂有限公司 | Flame-retardant low-temperature-resistant nylon for ultra-thin wall cable sheath layer and preparation method of nylon |
| CN106497032A (en) * | 2016-10-25 | 2017-03-15 | 徐州腾飞工程塑料有限公司 | A kind of nylon corrugated tube composite material and preparation method thereof |
| CN110615987A (en) * | 2019-10-15 | 2019-12-27 | 山东省科学院能源研究所 | Halogen-free flame-retardant toughened nylon and preparation method and application thereof |
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Application publication date: 20201016 |
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