CN113354891A - Acid-base-resistant and mildew-resistant tight sleeve material for cable and preparation thereof - Google Patents
Acid-base-resistant and mildew-resistant tight sleeve material for cable and preparation thereof Download PDFInfo
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- CN113354891A CN113354891A CN202110546112.7A CN202110546112A CN113354891A CN 113354891 A CN113354891 A CN 113354891A CN 202110546112 A CN202110546112 A CN 202110546112A CN 113354891 A CN113354891 A CN 113354891A
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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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- 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
- C08K3/20—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
- 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
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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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Abstract
The invention relates to an acid and alkali resistant anti-mildew tight sleeve material for a cable and a preparation method thereof, wherein the tight sleeve material is a polyolefin composition used as an inner layer of the cable, and the polyolefin composition comprises 20-28 parts of EVA (ethylene vinyl acetate), 4-6 parts of PE (polyethylene), 4-5 parts of elastomer, 4 parts of compatilizer, 0.5 part of anti-mildew agent, 59-65 parts of flame retardant, 0.3 part of antioxidant and the like, 0.15 part of anti-copper agent and 1.5 parts of wetting agent. The invention solves the problems of poor mould resistance and acid and alkali resistance of the existing cable material.
Description
The technical field is as follows:
the present invention relates to the preferred manufacture of polyolefin materials, and the blending of various mixtures;
background art:
the coming of the 5G era brings one historical comprehensive technical innovation, and the optical cable serving as a bearing foundation of the 5G ten-thousand-object interconnection communication technology is wide in application field, large in coverage area and complex in regional environment, and brings great quantity and quality requirements for the optical cable. At present, due to the rapid increase of the use amount of the electric wires and cables, the quality requirements of the electric wires and cables are continuously improved. For example, cables used in industries such as steel, metallurgy, electric power, chemical industry, petroleum and the like have extremely high requirements on flame retardance, acid and alkali corrosion resistance, service life, electromagnetic interference resistance, traction resistance, water resistance, bending resistance and high temperature resistance of the cables, and the safety during production and manufacturing in the fields can be improved only if the requirements are met. Moreover, if the cable is used for some special areas, for example, areas with more plum rain or areas with higher humidity, mould often grows easily on the cable material, and mould can corrode the cable material, gets into the inlayer, leads to its barrier propterty to the inlayer cable to descend, consequently needs to develop the tight cover material of cable that has acid and alkali resistance antimycotic functional nature.
The invention content is as follows:
the invention aims to provide an acid-base-resistant anti-mildew cable tight-sleeve material with excellent processability. The composite material mixture system has good compatibility and dispersibility.
The invention provides an acid and alkali resistant anti-mildew tight sleeve material for cables, which mainly comprises the following components:
the acid and alkali resistant anti-mildew cable sheathing material disclosed by the invention is excellent in acid and alkali resistance and anti-mildew performance, excellent in flame retardant performance and electrical performance and good in processability, and can be used in a humid environment for a long time.
The EVA is preferably EVA with the VA content of 16-18%.
The PE is preferably bimodal polyethylene and is characterized in that the melt index of the polyethylene is 0.2-0.5 g/10min, and the density of the polyethylene is 0.910-0.925 g/cm3。
The elastomer is an ethylene-octene copolymer, and the melt index is 1.0-2.0 g/10 min.
The compatilizer is preferably one or more of modified ethylene acrylate carbon monoxide terpolymer, ethylene-vinyl acetate (EVA) polymer, polyethylene, metallocene polyethylene, ethylene propylene rubber and polypropylene, and is characterized in that the melt index of the compatilizer is 1.5 g-2.0/10 min.
The flame retardant is aluminum hydroxide and is characterized in that the particle size of the aluminum hydroxide is more than 6000 meshes and less than D501.5, and the oil absorption value is less than or equal to 25mL/100 g.
The anti-mildew agent is inorganic silver anti-bacterial PE master batch or broad-spectrum antibacterial agent powder
The antioxidant is pentaerythritol tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] (1010) and dilauryl thiodipropionate (DLTP), wherein 1010 is a main component, and DLTP is an auxiliary component.
The copper resisting agent is N, N' -bis [ beta (3, 5-di-tert-butyl-4-hydroxyphenyl) propionyl ] hydrazine (CN 1024).
The wetting agent is silicone master batch.
The invention has the technical effects that: the acid and alkali resistant anti-mildew cable sheathing material disclosed by the invention is excellent in acid and alkali resistance and anti-mildew performance, excellent in flame retardant performance and electrical performance and good in processability, and can be used in a humid environment for a long time.
The specific implementation mode is as follows:
in order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
Example 1
The acid and alkali resistant and mildew resistant cable tight sleeve material with excellent processability comprises:
and (3) putting 27 parts of EVA, 4 parts of PE, 5 parts of elastomer and 4 parts of compatilizer into a high-speed mixer, and uniformly stirring for 2min to obtain a first mixture.
And (3) uniformly stirring 60 parts of additive flame retardant in the first mixture for 1min to obtain a second mixture.
And uniformly stirring and scattering 0.5 part of antimycotic agent, 0.3 part of antioxidant, 0.15 part of copper inhibitor and 1.5 parts of wetting agent on the surface of the second mixture, and uniformly stirring and mixing for 30 seconds to obtain a third mixture.
And (3) transferring all the third mixture into an internal mixer, starting internal mixing, lifting a pressurizing cover under the condition that the temperature reaches a proper temperature, exhausting for 30s, continuing internal mixing until the material is completely plasticized, and finally extruding and granulating in an extruder.
Example 2
The acid and alkali resistant and mildew resistant cable tight sleeve material with excellent processability comprises:
uniformly stirring 26 parts of EVA, 5 parts of PE, 5 parts of elastomer and 4 parts of compatilizer in a high-speed mixer for 2min to obtain a first mixture.
And (3) uniformly stirring 60 parts of additive flame retardant in the first mixture for 1min to obtain a second mixture.
And uniformly stirring and scattering 0.5 part of antimycotic agent, 0.3 part of antioxidant, 0.15 part of copper inhibitor and 1.5 parts of wetting agent on the surface of the second mixture, and uniformly stirring and mixing for 30 seconds to obtain a third mixture.
And (3) transferring all the third mixture into an internal mixer, starting internal mixing, lifting a pressurizing cover under the condition that the temperature reaches a proper temperature, exhausting for 30s, continuing internal mixing until the material is completely plasticized, and finally extruding and granulating in an extruder.
Example 3
The acid and alkali resistant and mildew resistant cable tight sleeve material with excellent processability comprises:
uniformly stirring 25 parts of EVA, 6 parts of PE, 5 parts of elastomer and 4 parts of compatilizer in a high-speed mixer for 2min to obtain a first mixture.
And (3) uniformly stirring 60 parts of additive flame retardant in the first mixture for 1min to obtain a second mixture.
And uniformly stirring and scattering 0.5 part of antimycotic agent, 0.3 part of antioxidant, 0.15 part of copper inhibitor and 1.5 parts of wetting agent on the surface of the second mixture, and uniformly stirring and mixing for 30 seconds to obtain a third mixture.
And (3) transferring all the third mixture into an internal mixer, starting internal mixing, lifting a pressurizing cover under the condition that the temperature reaches a proper temperature, exhausting for 30s, continuing internal mixing until the material is completely plasticized, and finally extruding and granulating in an extruder.
Example 4
The acid and alkali resistant and mildew resistant cable tight sleeve material with excellent processability comprises:
uniformly stirring 25 parts of EVA, 6 parts of PE, 5 parts of elastomer and 4 parts of compatilizer in a high-speed mixer for 2min to obtain a first mixture.
And (3) uniformly stirring 60 parts of additive flame retardant in the first mixture for 1min to obtain a second mixture.
And uniformly stirring and scattering 0.1 part of antimycotic agent, 0.3 part of antioxidant, 0.15 part of copper inhibitor and 1.5 parts of wetting agent on the surface of the second mixture, and uniformly stirring and mixing for 30 seconds to obtain a third mixture.
And (3) transferring all the third mixture into an internal mixer, starting internal mixing, lifting a pressurizing cover under the condition that the temperature reaches a proper temperature, exhausting for 30s, continuing internal mixing until the material is completely plasticized, and finally extruding and granulating in an extruder.
Example 5
The acid and alkali resistant and mildew resistant cable tight sleeve material with excellent processability comprises:
uniformly stirring 25 parts of EVA, 6 parts of PE, 5 parts of elastomer and 4 parts of compatilizer in a high-speed mixer for 2min to obtain a first mixture.
And (3) uniformly stirring 60 parts of additive flame retardant in the first mixture for 1min to obtain a second mixture.
And uniformly stirring and scattering 1 part of antimycotic agent, 0.3 part of antioxidant, 0.15 part of copper inhibitor and 1.5 parts of wetting agent on the surface of the second mixture, and uniformly stirring and mixing for 30 seconds to obtain a third mixture.
And (3) transferring all the third mixture into an internal mixer, starting internal mixing, lifting a pressurizing cover under the condition that the temperature reaches a proper temperature, exhausting for 30s, continuing internal mixing until the material is completely plasticized, and finally extruding and granulating in an extruder.
The acid and alkali resistant and anti-mildew cable tight-sleeve material prepared in the embodiment 1-5 is subjected to performance test, the measured data are shown in table 1, and the measurement method is carried out according to GB/T32129-2015;
TABLE 1
TABLE 2
As can be seen from table 1, the oxygen index of the acid and alkali resistant anti-fungal tight nesting materials prepared in examples 1 to 3 is about 32, the elongation at break change rate is less than 10%, and the strength change is less than 10%. In comparative examples 1, 2 and 3, the change rate of elongation at break and the change rate of strength are smaller with the increase of PE, which shows that the increase of PE is beneficial to acid and alkali resistance, but the amount of PE is not increased continuously considering the mechanical properties (tensile strength and elongation at break are shown in Table 2) and the cost of the material.
Comparative examples 3,4,5 the content of the antifungal agent was increased from 0.1 to 1.0, and the elongation at break change rate and the strength change rate were both decreased, but the amount of the antifungal agent was increased, a precipitation phenomenon was observed, and the cost was increased.
In conclusion, the acid and alkali resistant and anti-mildew cable tight-sleeved material and the preparation method thereof have the advantages of acid and alkali resistance, anti-mildew and flame retardance, and meanwhile, the cable also has good electrical insulation and processing performance and the preparation method is simple.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. An acid and alkali resistant anti-mildew tight sleeve material for cables comprises the following main components:
2. the acid and alkali resistant and mold resistant tight-buffered material for cables as claimed in claim 1, wherein: the EVA is EVA with the VA content of 16-18%.
3. The acid and alkali resistant and mold resistant tight-buffered material for cables as claimed in claim 1, wherein: the PE is preferably bimodal polyethylene, the melt index of the polyethylene is 0.2-0.5 g/10min, and the density of the polyethylene is 0.910-0.925 g/cm3。
4. The acid and alkali resistant and mold resistant tight-buffered material for cables as claimed in claim 1, wherein: the elastomer is an ethylene-octene copolymer, and the melt index is 1.0-2.0 g/10 min.
5. The acid and alkali resistant and mold resistant tight-buffered material for cables as claimed in claim 1, wherein: the compatilizer is preferably one or more of modified ethylene acrylate carbon monoxide terpolymer, ethylene-vinyl acetate (EVA) polymer, polyethylene, metallocene polyethylene, ethylene propylene rubber and polypropylene, and the melt index of the compatilizer is 1.5 g-2.0/10 min.
6. The acid and alkali resistant and mold resistant tight-buffered material for cables as claimed in claim 1, wherein: the flame retardant is aluminum hydroxide, the particle size of the aluminum hydroxide is more than 6000 meshes, the D501.5 is less than or equal to, and the oil absorption value is less than or equal to 25mL/100 g.
7. The acid and alkali resistant and mold resistant tight-buffered material for cables as claimed in claim 1, wherein: the anti-mildew agent is inorganic silver anti-bacterial PE master batch or broad-spectrum antibacterial agent powder.
8. The acid and alkali resistant and mold resistant tight-buffered material for cables as claimed in claim 1, wherein: the antioxidant is pentaerythritol tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] (1010) and dilauryl thiodipropionate (DLTP), wherein 1010 is a main component, and DLTP is an auxiliary component.
9. The acid and alkali resistant and mold resistant tight-buffered material for cables as claimed in claim 1, wherein: the copper-resistant agent is N, N' -bis [ beta (3, 5-di-tert-butyl-4-hydroxyphenyl) propionyl ] hydrazine (CN 1024); the wetting agent is silicone master batch.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110546112.7A CN113354891A (en) | 2021-05-19 | 2021-05-19 | Acid-base-resistant and mildew-resistant tight sleeve material for cable and preparation thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110546112.7A CN113354891A (en) | 2021-05-19 | 2021-05-19 | Acid-base-resistant and mildew-resistant tight sleeve material for cable and preparation thereof |
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| CN113354891A true CN113354891A (en) | 2021-09-07 |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110903535A (en) * | 2019-11-22 | 2020-03-24 | 上海至正道化高分子材料股份有限公司 | Low-smoke halogen-free flame-retardant sheath material with good cold resistance for cable and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110903535A (en) * | 2019-11-22 | 2020-03-24 | 上海至正道化高分子材料股份有限公司 | Low-smoke halogen-free flame-retardant sheath material with good cold resistance for cable and preparation method thereof |
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