CN111875865A - Super-flexible weather-resistant polyolefin special cable material and preparation method and application thereof - Google Patents
Super-flexible weather-resistant polyolefin special cable material and preparation method and application thereof Download PDFInfo
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- CN111875865A CN111875865A CN202010768148.5A CN202010768148A CN111875865A CN 111875865 A CN111875865 A CN 111875865A CN 202010768148 A CN202010768148 A CN 202010768148A CN 111875865 A CN111875865 A CN 111875865A
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- 239000000463 material Substances 0.000 title claims abstract description 67
- 229920000098 polyolefin Polymers 0.000 title claims abstract description 51
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- IISBACLAFKSPIT-UHFFFAOYSA-N Bisphenol A Natural products C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 claims abstract description 23
- 230000002745 absorbent Effects 0.000 claims abstract description 18
- 239000002250 absorbent Substances 0.000 claims abstract description 18
- 229920001684 low density polyethylene Polymers 0.000 claims abstract description 18
- 239000004702 low-density polyethylene Substances 0.000 claims abstract description 18
- 229920002943 EPDM rubber Polymers 0.000 claims abstract description 17
- 239000005038 ethylene vinyl acetate Substances 0.000 claims abstract description 17
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims abstract description 17
- 239000004698 Polyethylene Substances 0.000 claims abstract description 16
- -1 polyethylene Polymers 0.000 claims abstract description 16
- 229920000573 polyethylene Polymers 0.000 claims abstract description 16
- 239000004595 color masterbatch Substances 0.000 claims abstract description 13
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 10
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 10
- 239000000314 lubricant Substances 0.000 claims abstract description 10
- 239000006097 ultraviolet radiation absorber Substances 0.000 claims abstract description 6
- ASYVNKJNTGRTHC-UHFFFAOYSA-N 2-hydroxybenzoic acid;phenol Chemical compound OC1=CC=CC=C1.OC1=CC=CC=C1.OC(=O)C1=CC=CC=C1O ASYVNKJNTGRTHC-UHFFFAOYSA-N 0.000 claims abstract description 5
- 150000002148 esters Chemical class 0.000 claims abstract description 5
- JKBYAWVSVVSRIX-UHFFFAOYSA-N octadecyl 2-(1-octadecoxy-1-oxopropan-2-yl)sulfanylpropanoate Chemical group CCCCCCCCCCCCCCCCCCOC(=O)C(C)SC(C)C(=O)OCCCCCCCCCCCCCCCCCC JKBYAWVSVVSRIX-UHFFFAOYSA-N 0.000 claims description 9
- 229960001860 salicylate Drugs 0.000 claims description 9
- YGSDEFSMJLZEOE-UHFFFAOYSA-M salicylate Chemical compound OC1=CC=CC=C1C([O-])=O YGSDEFSMJLZEOE-UHFFFAOYSA-M 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 8
- 238000007689 inspection Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 5
- 238000004891 communication Methods 0.000 claims description 4
- 238000001125 extrusion Methods 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 3
- 230000032683 aging Effects 0.000 abstract description 5
- 230000003111 delayed effect Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 229920000915 polyvinyl chloride Polymers 0.000 description 3
- 239000004800 polyvinyl chloride Substances 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 2
- 238000005562 fading Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920013716 polyethylene resin Polymers 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- PWWSSIYVTQUJQQ-UHFFFAOYSA-N distearyl thiodipropionate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)CCSCCC(=O)OCCCCCCCCCCCCCCCCCC PWWSSIYVTQUJQQ-UHFFFAOYSA-N 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 239000004611 light stabiliser Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000033116 oxidation-reduction process Effects 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
Classifications
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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
-
- 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
-
- 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
-
- 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
-
- 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
-
- 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
-
- 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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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Organic Insulating Materials (AREA)
Abstract
The invention provides an ultra-flexible weather-resistant polyolefin special cable material and a preparation method and application thereof, wherein the ultra-flexible weather-resistant polyolefin special cable material comprises the following components in parts by weight: 60-80 parts of low-density polyethylene; 5-10 parts of ethylene-vinyl acetate copolymer; 10-30 parts of ethylene propylene diene monomer; 2-5 parts of maleic anhydride grafted compatilizer; 0.2-0.8 part of antioxidant; 2 parts of color master batch; 0.5 part of a lubricant; ultraviolet absorbent UV531 or salicylic acid bisphenol A ester 0.1-4 parts. The low-density polyethylene, the ethylene-vinyl acetate copolymer and the ethylene propylene diene monomer rubber material are grafted and blended by the maleic anhydride grafting compatilizer, so that the hardness and the flexibility of the polyethylene material are changed. The weather resistance of the cable material can be improved and the aging can be delayed by adding the ultraviolet absorber UV531 or the salicylic acid bisphenol A ester.
Description
Technical Field
The invention relates to the field of cable materials, in particular to an ultra-soft weather-resistant polyolefin special material and a preparation method and application thereof.
Background
At present, common flexible cable materials are generally made of rubber or soft PVC (polyvinyl chloride) materials, but the PVC materials are high in hardness and not soft enough. And the tear resistance of the rubber material is relatively poor. Many cables need lay under outdoor environment or other adverse circumstances, and the cable need withstand the examination of weather, for example illumination, cold and hot, wind and rain, bacterium etc. cause ground comprehensive destruction, and the cable needs possess excellent weatherability promptly, just can satisfy present increasingly stringent performance requirement. However, when the existing cable material is affected by the external environment, a series of aging phenomena such as fading, discoloration, cracking, chalking, strength reduction and the like often occur, wherein ultraviolet irradiation is a key factor for promoting cable aging.
Disclosure of Invention
The invention aims to provide an ultra-soft weather-resistant polyolefin special cable material, and a preparation method and application thereof, and solves the problems of insufficient softness and poor weather resistance of the existing cable material.
In order to solve the problems, the invention provides an ultra-flexible weather-resistant polyolefin special cable material which comprises the following components in parts by weight:
60-80 parts of low-density polyethylene;
5-10 parts of ethylene-vinyl acetate copolymer;
10-30 parts of ethylene propylene diene monomer;
2-5 parts of maleic anhydride grafted compatilizer;
0.2-0.8 part of antioxidant;
2 parts of color master batch;
0.5 part of a lubricant;
ultraviolet absorbent UV531 or salicylic acid bisphenol A ester 0.1-4 parts.
According to one embodiment of the present invention, the antioxidant is dioctadecyl thiodipropionate.
According to an embodiment of the invention, the lubricant is polyethylene wax.
According to an embodiment of the present invention, the ultraviolet absorber is UV531 and is 0.1 to 1 part.
According to one embodiment of the invention, the ultraviolet absorbent is bisphenol A salicylate and is 2-4 parts.
According to another aspect of the invention, the invention further provides the application of the ultra-flexible weather-resistant polyolefin special cable material, in particular, the ultra-flexible weather-resistant polyolefin special cable material is used for manufacturing coaxial cables or communication cables.
According to another aspect of the present invention, the present invention further provides a method for preparing the super-flexible weather-resistant polyolefin special cable material, comprising the following steps:
stirring: stirring and mixing low-density polyethylene, ethylene-vinyl acetate copolymer, ethylene propylene diene monomer, maleic anhydride grafted compatilizer, antioxidant, color master batch, lubricant and ultraviolet absorbent in a stirrer according to a proportion;
an extrusion molding step: and granulating the mixed components by a double-screw extruder under the conditions of 180-220 ℃ and vacuumizing negative pressure of-0.08 MPa to obtain the super-soft weather-resistant polyolefin special cable material.
According to an embodiment of the invention, the preparation method of the super-flexible weather-resistant polyolefin special cable material comprises the following detection steps: and (3) conveying the molded ultra-flexible weather-resistant polyolefin special cable material to an inspection center for full performance inspection.
Compared with the prior art, the technical scheme has the following advantages:
the invention adopts maleic anhydride grafting compatilizer to graft and blend low-density polyethylene, ethylene-vinyl acetate copolymer and ethylene propylene diene monomer rubber materials, thereby changing the hardness and flexibility of the polyethylene materials. In addition, the weather resistance of the cable material can be improved and the aging can be delayed by adding an ultraviolet absorber UV531 or bisphenol A salicylate.
Detailed Description
The following description is only for the purpose of disclosing the invention so as to enable a person skilled in the art to practice the invention. The embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents, and other arrangements without departing from the spirit and scope of the invention.
The invention provides an ultra-soft weather-resistant polyolefin special cable material, and particularly relates to a cable material for manufacturing a coaxial cable or a communication cable. Specifically, the super-flexible weather-resistant polyolefin special cable material comprises the following components in parts by weight:
60-80 parts of low-density polyethylene;
5-10 parts of ethylene-vinyl acetate copolymer;
10-30 parts of ethylene propylene diene monomer;
2-5 parts of maleic anhydride grafted compatilizer;
0.2-0.8 part of antioxidant;
2 parts of color master batch;
0.5 part of a lubricant;
ultraviolet absorbent UV531 or salicylic acid bisphenol A ester 0.1-4 parts.
Wherein the Low Density Polyethylene (LDPE) is also called high pressure polyethylene and has a density of 0.91g/cm3The super-soft weather-resistant polyolefin special cable material is the lightest variety of polyethylene resin, has good flexibility, extensibility, electrical insulation, easy processability and good chemical stability, is alkali-resistant and common organic solvent, and is used as one matrix resin of the super-soft weather-resistant polyolefin special cable material. The low-density polyethylene, ethylene-vinyl acetate copolymer (EVA) and Ethylene Propylene Diene Monomer (EPDM) are grafted and blended by adopting a maleic anhydride grafted compatilizer (MAH), and the hardness and the flexibility of the polyethylene material can be obviously changed by the maleic anhydride grafted compatilizer (MAH).
The antioxidant is dioctadecyl thiodipropionate (DSTP), and the lubricant is polyethylene WAX (WAX).
In particular, the added ultraviolet absorber is a light stabilizer, can absorb the ultraviolet part in sunlight and prevent harmful ultraviolet from causing the final decomposition and fading of color molecules of the cable through chemical oxidation-reduction action on the cable, thereby improving the weather resistance of the cable material and delaying aging.
Optionally, the ultraviolet absorbent is selected from UV531 and is 0.1-1 part, the ultraviolet absorbent UV531 can strongly absorb ultraviolet rays with the wavelength of 240-340nm, and the ultraviolet absorbent UV531 has good compatibility with the polyethylene resin.
In addition, 2-4 parts of bisphenol A salicylate can be selected as the ultraviolet absorbent, and the bisphenol A salicylate can absorb ultraviolet rays in a low wavelength band below 350 nm.
The preparation method of the super-flexible weather-resistant polyolefin special cable material comprises the following steps:
stirring: stirring and mixing low-density polyethylene, ethylene-vinyl acetate copolymer, ethylene propylene diene monomer, maleic anhydride grafted compatilizer, antioxidant, color master batch, lubricant and ultraviolet absorbent in a stirrer according to a proportion;
an extrusion molding step: and granulating the mixed components by a double-screw extruder under the conditions of 180-220 ℃ and vacuumizing negative pressure of-0.08 MPa to obtain the super-soft weather-resistant polyolefin special cable material.
Further, the method also comprises a detection step after the extrusion molding: and (3) conveying the molded ultra-flexible weather-resistant polyolefin special cable material to an inspection center for full performance inspection.
In application, the prepared super-soft weather-resistant polyolefin special cable material is free of plasticizer, low in cost, simple in production, controllable in quality and environment-friendly, and can be used for manufacturing coaxial cables or communication cables.
Example 1
The super-flexible weather-resistant polyolefin special cable material comprises: the polyethylene comprises low-density polyethylene, ethylene-vinyl acetate copolymer, ethylene propylene diene monomer, maleic anhydride grafted compatilizer, dioctadecyl thiodipropionate, color master batch, polyethylene wax and ultraviolet absorbent UV531, and the components are in parts by weight: 70:8:20:3:0.5:2:0.5:0.5.
The method for preparing the super-flexible weather-resistant polyolefin special cable material comprises the following steps:
(1) the preparation method comprises the following steps of (1) preparing low-density polyethylene, ethylene-vinyl acetate copolymer, ethylene propylene diene monomer, maleic anhydride grafted compatilizer, dioctadecyl thiodipropionate, color master batch, polyethylene wax and ultraviolet absorbent UV531 according to the weight ratio: stirring and mixing the components in a ratio of 70:8:20:3:0.5:2:0.5:0.5 by a high-speed stirrer;
(2) granulating the mixed components by a double-screw extruder under the conditions of 200 ℃ and vacuumizing negative pressure of-0.08 MPa to obtain the super-flexible weather-resistant polyolefin special cable material;
(3) and cooling and subpackaging the prepared super-flexible weather-resistant polyolefin special cable material, and then sending the cooled and subpackaged super-flexible weather-resistant polyolefin special cable material to an inspection center for full performance inspection. Wherein the elongation at break of the super-flexible weather-resistant polyolefin special cable material is 360%, and the tensile strength is 10.5 MPa.
Example 2
The super-flexible weather-resistant polyolefin special cable material comprises: the polyethylene comprises low-density polyethylene, ethylene-vinyl acetate copolymer, ethylene propylene diene monomer, maleic anhydride graft compatilizer, dioctadecyl thiodipropionate, color master batch, polyethylene wax and ultraviolet absorbent bisphenol A salicylate, and the components are in corresponding weight ratio: 80:10:305:0.8:2:0.5:4.
The method for preparing the super-flexible weather-resistant polyolefin special cable material comprises the following steps:
(1) low-density polyethylene, ethylene-vinyl acetate copolymer, ethylene propylene diene monomer, maleic anhydride graft compatilizer, dioctadecyl thiodipropionate, color master batch, polyethylene wax and ultraviolet absorbent bisphenol A salicylate are mixed according to the weight ratio: 80:10:30: stirring and mixing the components in a ratio of 5:0.8:2:0.5:4 by a high-speed stirrer;
(2) granulating the mixed components by a double-screw extruder at 220 ℃ under the condition of vacuumizing and negative pressure of-0.08 MPa to obtain the super-flexible weather-resistant polyolefin special cable material;
(3) and cooling and subpackaging the prepared super-flexible weather-resistant polyolefin special cable material, and then sending the cooled and subpackaged super-flexible weather-resistant polyolefin special cable material to an inspection center for full performance inspection. Wherein the breaking elongation of the super-flexible weather-resistant polyolefin special cable material is 393 percent, and the tensile strength is 11.6 MPa.
Example 3
The super-flexible weather-resistant polyolefin special cable material comprises: the polyethylene comprises low-density polyethylene, ethylene-vinyl acetate copolymer, ethylene propylene diene monomer, maleic anhydride graft compatilizer, dioctadecyl thiodipropionate, color master batch, polyethylene wax and ultraviolet absorbent bisphenol A salicylate, and the components are in corresponding weight ratio: 60:5:10:2:0.2:2:0.5:2.
The method for preparing the super-flexible weather-resistant polyolefin special cable material comprises the following steps:
(1) low-density polyethylene, ethylene-vinyl acetate copolymer, ethylene propylene diene monomer, maleic anhydride graft compatilizer, dioctadecyl thiodipropionate, color master batch, polyethylene wax and ultraviolet absorbent bisphenol A salicylate are mixed according to the weight ratio: 60:5:10:2:0.2:2:0.5:2. The components are stirred and mixed by a high-speed stirrer;
(2) granulating the mixed components by a double-screw extruder at 220 ℃ under the condition of vacuumizing and negative pressure of-0.08 MPa to obtain the super-flexible weather-resistant polyolefin special cable material;
(3) and cooling and subpackaging the prepared super-flexible weather-resistant polyolefin special cable material, and then sending the cooled and subpackaged super-flexible weather-resistant polyolefin special cable material to an inspection center for full performance inspection. Wherein the measured breaking elongation of the super-flexible weather-resistant polyolefin special cable material is 385%, and the tensile strength is 11 MPa.
It will be appreciated by persons skilled in the art that the above description and examples of the invention are given by way of illustration only and not as a limitation of the invention. The objects of the invention have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the examples, and the embodiments of the present invention may be subject to any changes or modifications without departing from the principles.
Claims (8)
1. The super-flexible weather-resistant polyolefin special cable material is characterized by comprising the following components in parts by weight:
60-80 parts of low-density polyethylene;
5-10 parts of ethylene-vinyl acetate copolymer;
10-30 parts of ethylene propylene diene monomer;
2-5 parts of maleic anhydride grafted compatilizer;
0.2-0.8 part of antioxidant;
2 parts of color master batch;
0.5 part of a lubricant;
ultraviolet absorbent UV531 or salicylic acid bisphenol A ester 0.1-4 parts.
2. The extra-flexible weather-resistant polyolefin special cable material as claimed in claim 1, wherein the antioxidant is dioctadecyl thiodipropionate.
3. The extra-flexible weather-resistant polyolefin specialty cable material of claim 1, wherein said lubricant is polyethylene wax.
4. The super-flexible weather-resistant polyolefin special cable material as claimed in claim 1, wherein the ultraviolet absorber is UV531 and is 0.1-1 part.
5. The ultra-flexible weather-resistant polyolefin special cable material as claimed in claim 1, wherein the ultraviolet absorber is bisphenol A salicylate and is 2-4 parts.
6. The use of the ultra-flexible weatherable polyolefin specialty cable material according to any of claims 1-5, wherein said ultra-flexible weatherable polyolefin specialty cable material is used to make a coaxial cable or a communications cable.
7. The method for preparing the ultra-flexible weather-resistant polyolefin special cable material as claimed in any one of claims 1 to 5, which comprises the following steps:
stirring: stirring and mixing low-density polyethylene, ethylene-vinyl acetate copolymer, ethylene propylene diene monomer, maleic anhydride grafted compatilizer, antioxidant, color master batch, lubricant and ultraviolet absorbent in a stirrer according to a proportion;
an extrusion molding step: and granulating the mixed components by a double-screw extruder under the conditions of 180-220 ℃ and vacuumizing negative pressure of-0.08 MPa to obtain the super-soft weather-resistant polyolefin special cable material.
8. The preparation method of the super-flexible weather-resistant polyolefin special cable material as claimed in claim 7, wherein the preparation method of the super-flexible weather-resistant polyolefin special cable material comprises the following detection steps: and (3) conveying the molded ultra-flexible weather-resistant polyolefin special cable material to an inspection center for full performance inspection.
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| CN112457552A (en) * | 2020-11-17 | 2021-03-09 | 苏州亨利通信材料有限公司 | Weather-resistant low-density polyethylene insulating material and preparation method thereof |
| CN113105683A (en) * | 2021-04-09 | 2021-07-13 | 杭州科佳新材料股份有限公司 | Oil-resistant super-soft polyethylene material and preparation method thereof |
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