CN112375311A - Flame-retardant low-temperature-resistant plastic for nano environment-friendly cable and preparation method thereof - Google Patents
Flame-retardant low-temperature-resistant plastic for nano environment-friendly cable and preparation method thereof Download PDFInfo
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- CN112375311A CN112375311A CN202011080091.6A CN202011080091A CN112375311A CN 112375311 A CN112375311 A CN 112375311A CN 202011080091 A CN202011080091 A CN 202011080091A CN 112375311 A CN112375311 A CN 112375311A
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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
- 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
- H01B3/441—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from alkenes
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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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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C08K2201/011—Nanostructured additives
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- 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
- 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
- C08L2205/02—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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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/04—Thermoplastic elastomer
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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
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/066—LDPE (radical process)
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Abstract
The invention discloses a flame-retardant low-temperature-resistant plastic for a nano environment-friendly cable, which comprises the following components: nano PVC, PE, LDPE, polyolefin, calcium carbonate, brominated flame retardant, nano aluminum hydroxide, toughening agent, plasticizer and lubricant; the invention takes nano PVC, PE and LDPE as the main components of the plastic, the nano PVC has excellent impact resistance and thermal stability, and compared with general resin, the impact resistance and the thermal stability are averagely improved by more than two times; meanwhile, the processing performance is greatly improved during plastic extrusion molding, the PE and the low-density LDPE are matched to improve the tensile resistance, toughness and low-temperature resistance of the extruded cable, the cable wire is prevented from becoming brittle and easy to crack and break due to low temperature, the polyolefin is added into the ingredients, the oxidation resistance of the wire is facilitated, the cable aging caused by oxidation is reduced, and the bromine flame retardant is added into the formula, so that the bromine flame retardant has the advantages of large molecular weight, good thermal stability, good flame retardance, no harm during combustion and good environment-friendly effect.
Description
Technical Field
The invention belongs to the technical field of cable wire production, and particularly relates to a flame-retardant low-temperature-resistant plastic for a nano environment-friendly cable and a preparation method thereof.
Background
Polyethylene is the most widely used and most used plastic at present, has small meson loss, high resistivity, high breakdown field strength, good weather resistance and good manufacturability, and is the best electrical insulating material at present. But is mainly used as insulation of communication cables due to its low operating temperature. The medium-density and high-density polyethylene has high strength and hardness, low water permeability and is mainly used as a cable sheath. However, polyethylene has the greatest disadvantages of being easily combustible and having strong black smoke, so that its use poses many hidden troubles to the environment.
And the north-south climate difference of China is big, and conventional cable is not suitable for the low temperature environment in the north and the strong environment in the northwest of the China, easily receives the natural environment influence, does not endure low temperature, and oxidation resistance is poor, exposes the use for a long time after, and cable wire ageing is fast, appears crust crack easily, fracture scheduling problem, and conventional cable wire fire resistance is poor, produces harmful gas polluted air during the burning easily, is unfavorable for the environmental protection.
Disclosure of Invention
Aiming at the technical problems caused by the background, the technical scheme adopted by the invention is as follows:
the flame-retardant low-temperature-resistant plastic for the nano environment-friendly cable comprises the following components in parts by mass: 60-80 parts of nano PVC, 30-40 parts of PE, 15-20 parts of LDPE, 15-20 parts of polyolefin, 10-15 parts of calcium carbonate, 10-18 parts of brominated flame retardant, 10-14 parts of nano aluminum hydroxide, 3-8 parts of toughening agent, 2-5 parts of plasticizer and 3-8 parts of lubricant.
Preferably, the brominated flame retardant is polybrominated diphenyl ether.
Preferably, the toughening agent is a thermoplastic elastomer.
Preferably, the plasticizer is a phthalate compound.
Preferably, the lubricant is a mixture of paraffin and stearic acid.
The preparation method of the flame-retardant low-temperature-resistant plastic for the nano environment-friendly cable comprises the following steps of:
(a) pouring nano PVC, PE and LDPE with corresponding mass parts into a reaction kettle, heating to 120-130 ℃, and continuously stirring for 30-45 min to obtain mixed resin;
(b) grinding the corresponding mass parts of calcium carbonate by a ball mill until the particle size meets 5-8 μm to obtain calcium carbonate powder;
(c) adding calcium carbonate powder in a corresponding mass part into the mixed resin, stirring until the calcium carbonate powder is completely mixed, keeping the temperature to 120 ℃, adding a lubricant, and stirring for 20-25 min to obtain a mixture;
(d) sequentially adding polyolefin, brominated flame retardant, nano aluminum hydroxide, toughening agent and plasticizer in corresponding parts by weight into the mixture, and continuously stirring for 40-60 min to obtain a finished product mixture;
(e) and injecting the finished product mixture into an extruder, and extruding according to the requirement of the finished product to obtain the finished product plastic.
Preferably, the rotation speed of the ball mill in the step (b) meets 3000 r/min.
Preferably, the extruder extrusion temperature in step (e) is at least 160 ℃.
By adopting the technical scheme of the invention, the following beneficial effects are obtained:
1. the invention takes nano PVC, PE and LDPE as the main components of the plastic, the nano PVC has excellent impact resistance and thermal stability, compared with the general resin, the impact resistance and the thermal stability are averagely improved by more than two times, and simultaneously, the processability is greatly improved when the plastic is extruded and molded;
2. the invention combines PE and LDPE with low density, improves the tensile resistance, toughness and low temperature resistance of the extruded cable, avoids the cable wire from becoming brittle and easy to crack and break due to low temperature, and adds polyolefin into the ingredients, which is helpful for the oxidation resistance of the wire and reduces the cable aging caused by oxidation;
3. the brominated flame retardant is added into the formula, so that the flame retardant has the advantages of large molecular weight, good thermal stability, good flame retardance, no harm in combustion and good environment-friendly effect.
Detailed Description
In order that those skilled in the art can better understand the present invention, the following embodiments are provided to further illustrate the present invention.
The flame-retardant low-temperature-resistant plastic for the nano environment-friendly cable comprises the following components in parts by mass: 60-80 parts of nano PVC, 30-40 parts of PE, 15-20 parts of LDPE, 15-20 parts of polyolefin, 10-15 parts of calcium carbonate, 10-18 parts of brominated flame retardant, 10-14 parts of nano aluminum hydroxide, 3-8 parts of toughening agent, 2-5 parts of plasticizer and 3-8 parts of lubricant.
The brominated flame retardant is polybrominated diphenyl ether.
The toughening agent is a thermoplastic elastomer.
The plasticizer is a phthalate ester compound.
The lubricant is a mixture of paraffin and stearic acid.
A preparation method of flame-retardant low-temperature-resistant plastic for a nano environment-friendly cable comprises the following steps:
(a) pouring nano PVC, PE and LDPE with corresponding mass parts into a reaction kettle, heating to 120-130 ℃, and continuously stirring for 30-45 min to obtain mixed resin;
(b) grinding the corresponding mass parts of calcium carbonate by a ball mill until the particle size meets 5-8 μm to obtain calcium carbonate powder;
(c) adding calcium carbonate powder in a corresponding mass part into the mixed resin, stirring until the calcium carbonate powder is completely mixed, keeping the temperature to 120 ℃, adding a lubricant, and stirring for 20-25 min to obtain a mixture;
(d) sequentially adding polyolefin, brominated flame retardant, nano aluminum hydroxide, toughening agent and plasticizer in corresponding parts by weight into the mixture, and continuously stirring for 40-60 min to obtain a finished product mixture;
(e) and injecting the finished product mixture into an extruder, and extruding according to the requirement of the finished product to obtain the finished product plastic.
The rotating speed of the ball mill in the step (b) meets 3000 r/min.
The extruder in step (e) is operated at a temperature of at least 160 ℃.
Example 1
The preparation method comprises the following components in parts by weight: the flame retardant is prepared from the following raw materials, by weight, 60 parts of nano PVC, 30 parts of PE, 15 parts of LDPE, 15 parts of polyolefin, 10 parts of calcium carbonate, 10 parts of brominated flame retardant, 10 parts of nano aluminum hydroxide, 3 parts of toughening agent, 2 parts of plasticizer and 3 parts of lubricant.
Example 2
The preparation method comprises the following components in parts by weight: : 70 parts of nano PVC, 35 parts of PE, 17.5 parts of LDPE, 17.5 parts of polyolefin, 12.5 parts of calcium carbonate, 14 parts of brominated flame retardant, 12 parts of nano aluminum hydroxide, 5.5 parts of toughening agent, 3.5 parts of plasticizer and 5.5 parts of lubricant.
Example 3
The preparation method comprises the following components in parts by weight: 80 parts of nano PVC, 40 parts of PE, 20 parts of LDPE, 20 parts of polyolefin, 15 parts of calcium carbonate, 18 parts of brominated flame retardant, 14 parts of nano aluminum hydroxide, 8 parts of toughening agent, 5 parts of plasticizer and 8 parts of lubricant.
Comparative example 1
The preparation method comprises the following components in parts by weight: 40 parts of nano PVC, 35 parts of PE, 17.5 parts of LDPE, 10 parts of polyolefin, 12.5 parts of calcium carbonate, 10 parts of brominated flame retardant, 12 parts of nano aluminum hydroxide, 5.5 parts of toughening agent, 3.5 parts of plasticizer and 5.5 parts of lubricant.
Comparative example 2
The preparation method comprises the following components in parts by weight: 100 parts of nano PVC, 50 parts of PE, 30 parts of LDPE, 25 parts of polyolefin, 12.5 parts of calcium carbonate, 22 parts of brominated flame retardant, 12 parts of nano aluminum hydroxide, 5.5 parts of toughening agent, 3.5 parts of plasticizer and 5.5 parts of lubricant.
The cable plastics prepared according to the 2 example and 2 comparative example formulations described above were extruded to give cables, which after performance testing gave table 1, as follows:
in conclusion, in the reasonable formula range, the higher the mass parts of the nano PVC, PE and LDPE, the lower the low temperature resistance, see example 3, while the mass parts of the nano PVC, PE and LDPE are moderate, and the cable performance is optimal.
The foregoing embodiments are merely illustrative of the principles of the present invention and its efficacy, and are not to be construed as limiting the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes be made by those skilled in the art without departing from the spirit and technical spirit of the present invention, and be covered by the claims of the present invention.
Claims (8)
1. The flame-retardant low-temperature-resistant plastic for the nano environment-friendly cable is characterized by comprising the following components in parts by weight: the plastic comprises the following components in parts by mass: 60-80 parts of nano PVC, 30-40 parts of PE, 15-20 parts of LDPE, 15-20 parts of polyolefin, 10-15 parts of calcium carbonate, 10-18 parts of brominated flame retardant, 10-14 parts of nano aluminum hydroxide, 3-8 parts of toughening agent, 2-5 parts of plasticizer and 3-8 parts of lubricant.
2. A low temperature resistant plastic according to claim 1, wherein: the brominated flame retardant is polybrominated diphenyl ether.
3. A low temperature resistant plastic according to claim 2, wherein: the toughening agent is a thermoplastic elastomer.
4. A low temperature resistant plastic according to claim 3, wherein: the plasticizer is a phthalate ester compound.
5. Low temperature resistant plastic according to claim 4, characterized in that: the lubricant is a mixture of paraffin and stearic acid.
6. A preparation method of flame-retardant low-temperature-resistant plastic for a nano environment-friendly cable is characterized by comprising the following steps:
(a) pouring nano PVC, PE and LDPE with corresponding mass parts into a reaction kettle, heating to 120-130 ℃, and continuously stirring for 30-45 min to obtain mixed resin;
(b) grinding the corresponding mass parts of calcium carbonate by a ball mill until the particle size meets 5-8 μm to obtain calcium carbonate powder;
(c) adding calcium carbonate powder in a corresponding mass part into the mixed resin, stirring until the calcium carbonate powder is completely mixed, keeping the temperature to 120 ℃, adding a lubricant, and stirring for 20-25 min to obtain a mixture;
(d) sequentially adding polyolefin, brominated flame retardant, nano aluminum hydroxide, toughening agent and plasticizer in corresponding parts by weight into the mixture, and continuously stirring for 40-60 min to obtain a finished product mixture;
(e) and injecting the finished product mixture into an extruder, and extruding according to the requirement of the finished product to obtain the finished product plastic.
7. The method of claim 6, wherein: the rotating speed of the ball mill in the step (b) meets 3000 r/min.
8. The method of claim 7, wherein: the extruder in step (e) is operated at a temperature of at least 160 ℃.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011080091.6A CN112375311A (en) | 2020-10-10 | 2020-10-10 | Flame-retardant low-temperature-resistant plastic for nano environment-friendly cable and preparation method thereof |
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|---|---|---|---|
| CN202011080091.6A CN112375311A (en) | 2020-10-10 | 2020-10-10 | Flame-retardant low-temperature-resistant plastic for nano environment-friendly cable and preparation method thereof |
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| CN112375311A true CN112375311A (en) | 2021-02-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113214574A (en) * | 2021-04-20 | 2021-08-06 | 河北龙甲冶金设备有限公司 | Flame-retardant reinforced toughened high-wear-resistance high-molecular polyethylene composition and preparation method thereof |
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2020
- 2020-10-10 CN CN202011080091.6A patent/CN112375311A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113214574A (en) * | 2021-04-20 | 2021-08-06 | 河北龙甲冶金设备有限公司 | Flame-retardant reinforced toughened high-wear-resistance high-molecular polyethylene composition and preparation method thereof |
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Application publication date: 20210219 |