CN113637248A - Preparation of low-shrinkage HDPE sheath material - Google Patents
Preparation of low-shrinkage HDPE sheath material Download PDFInfo
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- CN113637248A CN113637248A CN202110733417.9A CN202110733417A CN113637248A CN 113637248 A CN113637248 A CN 113637248A CN 202110733417 A CN202110733417 A CN 202110733417A CN 113637248 A CN113637248 A CN 113637248A
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- 239000000463 material Substances 0.000 title claims abstract description 141
- 238000002360 preparation method Methods 0.000 title claims abstract description 22
- 229920001903 high density polyethylene Polymers 0.000 title claims abstract description 20
- 239000004700 high-density polyethylene Substances 0.000 title claims abstract description 20
- 239000004698 Polyethylene Substances 0.000 claims abstract description 109
- -1 polyethylene Polymers 0.000 claims abstract description 66
- 229920000573 polyethylene Polymers 0.000 claims abstract description 66
- 239000004594 Masterbatch (MB) Substances 0.000 claims abstract description 34
- 239000006229 carbon black Substances 0.000 claims abstract description 21
- 229920000092 linear low density polyethylene Polymers 0.000 claims abstract description 21
- 239000004707 linear low-density polyethylene Substances 0.000 claims abstract description 21
- 239000002667 nucleating agent Substances 0.000 claims abstract description 21
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 17
- 238000011049 filling Methods 0.000 claims abstract description 17
- 239000011347 resin Substances 0.000 claims abstract description 17
- 229920005989 resin Polymers 0.000 claims abstract description 17
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 12
- 239000004615 ingredient Substances 0.000 claims abstract description 7
- 150000001875 compounds Chemical class 0.000 claims description 13
- 238000003756 stirring Methods 0.000 claims description 12
- 230000003287 optical effect Effects 0.000 claims description 10
- 238000001125 extrusion Methods 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 8
- 238000012545 processing Methods 0.000 claims description 8
- 229920003023 plastic Polymers 0.000 claims description 6
- 239000004033 plastic Substances 0.000 claims description 6
- 239000010985 leather Substances 0.000 claims description 5
- 238000007605 air drying Methods 0.000 claims description 4
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 4
- 230000002902 bimodal effect Effects 0.000 claims description 4
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical group C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 4
- 239000010445 mica Substances 0.000 claims description 4
- 229910052618 mica group Inorganic materials 0.000 claims description 4
- 238000004806 packaging method and process Methods 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 4
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 claims description 4
- 239000005995 Aluminium silicate Substances 0.000 claims description 2
- 235000012211 aluminium silicate Nutrition 0.000 claims description 2
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 2
- 239000000292 calcium oxide Substances 0.000 claims description 2
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 2
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 2
- 239000003973 paint Substances 0.000 claims 1
- 239000000203 mixture Substances 0.000 abstract description 8
- 238000004064 recycling Methods 0.000 abstract description 2
- 239000002994 raw material Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000011056 performance test Methods 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 230000006911 nucleation Effects 0.000 description 2
- 238000010899 nucleation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- 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
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/443—Protective covering
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
-
- 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
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/20—Recycled plastic
Abstract
The invention discloses a preparation method of a low-shrinkage HDPE sheath material, which comprises the following ingredients in parts by weight: 70-80 parts of PE regenerated material, 10-15 parts of LLDPE resin, 1-5 parts of nucleating agent, 3-7 parts of filling master batch, 2-5 parts of carbon black master batch and 0.3-0.6 part of antioxidant. When the PE reclaimed material is a mixture of the polyethylene agricultural greenhouse reclaimed material and the recycled polyethylene high-pressure material, the performances of the prepared sheath material in the aspects of heat shrinkage rate, tensile strength, fracture elongation and melt mass flow rate are greatly improved, and in addition, the recycling of the polyethylene agricultural greenhouse reclaimed material and the recycled polyethylene high-pressure material is facilitated.
Description
Technical Field
The invention belongs to the technical field of preparation of polyethylene sheath materials, and particularly relates to preparation of a low-shrinkage HDPE sheath material.
Background
Polyethylene itself has a semi-crystalline nature, which is a raw material of the sheath and undergoes large shrinkage during actual extrusion molding. If the optical cable structure has stronger axial support, the optical cable can better resist the shrinkage force of the sheath; if the axial support strength of the cable is insufficient or no axial support structure exists, the shrinkage phenomenon of the sheath of the optical cable in the processing process can be transmitted to the loose tube to cause the optical fiber in the loose tube to deform, and the quality of the optical cable is further influenced integrally.
At present, the thermal shrinkage rate of the cable sheath material on the market is about 4.3 percent, some cable sheath materials have poor high temperature resistance even exceeding 7 percent, and the standard requirement of the thermal shrinkage rate of the outdoor optical cable sheath material in the communication industry of China is within 5 percent, so that the thermal shrinkage rate of the cable sheath material in the industry has great promotion space.
At present, the method for improving the shrinkage rate of the polyethylene sheath material basically refers to PP modification, and the crystallinity of polyethylene is damaged by adding a large amount of fillers, elastomers and the like. However, after the polyethylene material is used for the sheath, the appearance, processability and mechanical properties of the sheath are seriously damaged, and the requirements of customers cannot be met. Therefore, a low-shrinkage polyethylene material needs to be researched for overcoming the defect of sheath shrinkage after the polyethylene sheath material is cabled, and the appearance, the processing performance and the mechanical performance of the cable are not influenced.
Disclosure of Invention
In view of the above, the present invention provides a preparation method of a low shrinkage HDPE sheathing compound, which can effectively solve the above problems in the prior art.
In order to achieve the purpose, the invention provides the following technical scheme: the preparation method of the low-shrinkage HDPE sheathing compound comprises the following ingredients in parts by weight: 70-80 parts of PE regenerated material, 10-15 parts of LLDPE resin, 1-5 parts of nucleating agent, 3-7 parts of filling master batch, 2-5 parts of carbon black master batch and 0.3-0.6 part of antioxidant.
Further, the PE reclaimed material is at least one of polyethylene agricultural greenhouse reclaimed material, polyethylene cable and optical cable smashed leather reclaimed material, polyethylene plastic bottle smashed reclaimed material and recycled polyethylene high-pressure material.
Further, 72-78 parts of PE reclaimed materials, 12-14 parts of LLDPE resin, 2-4 parts of nucleating agents, 4-6 parts of filling master batches, 3-4 parts of carbon black master batches and 0.4-0.5 part of antioxidants.
Further, the PE reclaimed material is one or two of polyethylene agricultural greenhouse reclaimed material and recycled polyethylene high-pressure material.
Further, the LLDPE resin is a bimodal LLDPE.
Further, the nucleating agent is one or two of calcium oxide and zinc stearate, and the nucleating agent takes POE as a carrier.
Further, the filling master batch is composed of at least one of mica powder, kaolin and barium sulfate.
Further, the antioxidant is bisphenol A.
Further, the carbon black master batch is carbon black N22015-25.
Further, the preparation method comprises the following steps:
1) adding the PE regenerated material and LLDPE resin into a stirrer, stirring for 0.5-1h at 80-85 ℃, then pouring the nucleating agent, the filling master batch, the carbon black master batch and the antioxidant into the stirrer according to the proportion, stirring for 1-3h at the stirring temperature of 80-100 ℃, then cooling the materials to 40-55 ℃, and discharging;
2) putting the materials into a double-screw extruder for extrusion molding, wherein the processing temperature of the double-screw extruder is 130-150 ℃, and cooling and drying the finished product of the extrusion molding;
3) and (4) granulating, air-drying, packaging and warehousing the cooled and blow-dried sheath material.
Compared with the prior art, the invention has the beneficial effects that:
(1) when the PE regenerated material polyethylene agricultural greenhouse regenerated material is used as a basic formula system, the contractibility of the HDPE sheathing material is improved on the basis of ensuring good compatibility with a matrix by adding various additives such as a new material, a filling agent, a nucleation master batch and the like according to a proportion part, so that the problem of large cable shrinkage of the common polyethylene PE sheathing material in the prior art is solved, and the appearance, the processing performance, the mechanical performance and the like after cable formation are met.
(2) When the PE reclaimed material is a mixture of the polyethylene agricultural greenhouse reclaimed material and the recycled polyethylene high-pressure material, the performances of the prepared sheath material in the aspects of heat shrinkage, tensile strength, fracture elongation and melt mass flow rate are greatly improved.
(3) When the weight ratio of the polyethylene green house recycled material to the recycled polyethylene high-pressure material adopted by the PE recycled material is more than 1, namely the weight of the polyethylene green house recycled material is more than that of the recycled polyethylene high-pressure material, the prepared sheath material has better performances in the aspects of heat shrinkage, tensile strength, fracture elongation and melt mass flow rate.
Detailed Description
To further illustrate the contents, features and effects of the present invention, the present invention will be further described by way of the following examples. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention, and that such changes and modifications may be made without departing from the spirit and scope of the invention.
Preparation of (I) sheath material
Example (b):
the preparation method of the low-shrinkage HDPE sheathing compound comprises the following steps:
1) adding the PE regenerated material and LLDPE resin into a stirrer, stirring for 0.5-1h at 80-85 ℃, then pouring the nucleating agent, the filling master batch, the carbon black master batch and the antioxidant into the stirrer according to the proportion, stirring for 1-3h at the stirring temperature of 80-100 ℃, then cooling the materials to 40-55 ℃, and discharging;
2) putting the materials into a double-screw extruder for extrusion molding, wherein the processing temperature of the double-screw extruder is 130-150 ℃, and cooling and drying the finished product of the extrusion molding;
3) and (4) granulating, air-drying, packaging and warehousing the cooled and blow-dried sheath material.
Wherein the PE reclaimed material is polyethylene agricultural greenhouse reclaimed material.
The LLDPE resin is a bimodal LLDPE.
The nucleating agent is zinc stearate, and the nucleating agent takes POE as a carrier.
The filling master batch is mica powder.
The antioxidant is bisphenol A.
The carbon black master batch is carbon black N22015-25.
Examples 1-5 were prepared by the above method, wherein the ingredients were in the following proportions by weight:
| example 1 | Example 2 | Example 3 | Example 4 | Example 5 | |
| PE reclaimed material | 75 | 70 | 80 | 72 | 78 |
| LLDPE resin | 13 | 15 | 10 | 14 | 12 |
| Nucleating agent | 3 | 1 | 5 | 2 | 4 |
| Filling master batch | 5 | 7 | 3 | 6 | 4 |
| Carbon black masterbatch | 3.5 | 2 | 5 | 3 | 4 |
| Antioxidant agent | 0.45 | 0.6 | 0.3 | 0.5 | 0.4 |
Control group:
the preparation method of the low-shrinkage HDPE sheathing compound comprises the following steps:
1) adding the PE regenerated material and LLDPE resin into a stirrer, stirring for 0.5-1h at 80-85 ℃, then pouring the nucleating agent, the filling master batch, the carbon black master batch and the antioxidant into the stirrer according to the proportion, stirring for 1-3h at the stirring temperature of 80-100 ℃, then cooling the materials to 40-55 ℃, and discharging;
2) putting the materials into a double-screw extruder for extrusion molding, wherein the processing temperature of the double-screw extruder is 130-150 ℃, and cooling and drying the finished product of the extrusion molding;
3) and (4) granulating, air-drying, packaging and warehousing the cooled and blow-dried sheath material.
Wherein the LLDPE resin is a bimodal LLDPE.
The nucleating agent is zinc stearate, and the nucleating agent takes POE as a carrier.
The filling master batch is mica powder.
The antioxidant is bisphenol A.
The carbon black master batch is carbon black N22015-25.
Control 1-control 11 were prepared as described above,
the control group 1 is prepared by crushing a leather regenerated material by a polyethylene cable and an optical cable, the control group 2 is prepared by crushing a reclaimed material by a polyethylene plastic bottle, the control group 3 is prepared by recycling a polyethylene high-pressure material, and the control group 4 is prepared by PE.
The proportion of the ingredients of the comparison group 1 to the comparison group 3 is as follows according to the parts by weight:
| control group 1 | Control group 2 | Control group 3 | Control group 4 | |
| PE reclaimed material | 75 | 75 | 75 | 75 |
| LLDPE resin | 13 | 13 | 13 | 13 |
| Nucleating agent | 3 | 3 | 3 | 3 |
| Filling master batch | 5 | 5 | 5 | 5 |
| Carbon black masterbatch | 3.5 | 3.5 | 3.5 | 3.5 |
| Antioxidant agent | 0.45 | 0.45 | 0.45 | 0.45 |
Wherein, the PE reclaimed material in the control group 5 adopts a mixture of polyethylene agricultural greenhouse reclaimed material and polyethylene cable and optical cable crushed leather reclaimed material, and the weight ratio is 1: 1, in the comparison group 6, the PE reclaimed material adopts polyethylene agricultural greenhouse reclaimed material and polyethylene plastic bottle crushed reclaimed material, and the weight ratio is 1: 1, the PE reclaimed material in the control group 7 adopts polyethylene agricultural greenhouse reclaimed material and recycled polyethylene high-pressure material, and the weight ratio is 1: 1. the proportion of the ingredients of the control group 5 to the control group 7 is as follows according to the parts by weight:
| control group 5 | Control group 6 | Control group 7 | |
| PE reclaimed material | 75 | 75 | 75 |
| LLDPE resin | 13 | 13 | 13 |
| Nucleating agent | 3 | 3 | 3 |
| Filling master batch | 5 | 5 | 5 |
| Carbon black masterbatch | 3.5 | 3.5 | 3.5 |
| Antioxidant agent | 0.45 | 0.45 | 0.45 |
Wherein, the PE reclaimed materials in the comparison groups 8-11 are all a mixture of polyethylene green house reclaimed materials (NY) and recycled polyethylene high-pressure materials (GY), and the weight ratio of NY to GY in the comparison group 8 is 2: 1, the weight ratio of NY to GY in the control group 9 is 3: 1, the weight ratio of NY to GY in the control group 10 is 1: 2, the weight ratio of NY to GY in the control group 11 is 1: 3.
the proportion of each ingredient of the comparison group 8-the comparison group 11 is as follows according to the parts by weight:
| control group 8 | Control group 9 | Control group 10 | Control group 11 | |
| PE reclaimed material | 75 | 75 | 75 | 75 |
| LLDPE resin | 13 | 13 | 13 | 13 |
| Nucleating agent | 3 | 3 | 3 | 3 |
| Filling master batch | 5 | 5 | 5 | 5 |
| Carbon black masterbatch | 3.5 | 3.5 | 3.5 | 3.5 |
| Antioxidant agent | 0.45 | 0.45 | 0.45 | 0.45 |
(II) performance detection:
1. example results of Performance testing
When the PE regenerated material polyethylene agricultural greenhouse regenerated material is used as a basic formula system, the contractibility of the HDPE sheathing material is improved on the basis of ensuring good compatibility with a matrix by adding various additives such as a new material, a filling agent, a nucleation master batch and the like according to a proportion part, so that the problem of large cable shrinkage of the common polyethylene PE sheathing material in the prior art is solved, and the appearance, the processing performance, the mechanical performance and the like after cable formation are met.
2. In order to verify the effects of other PE reclaimed materials and PE raw materials, the performances of the sheath materials of the comparison groups 1 to 4 are measured, and the results are as follows:
in the above performance test data of the sheath materials of example 1 and comparison groups 1-4, it can be known that the PE recycled material adopts polyethylene green house recycled material with the best performance in the aspects of heat shrinkage, tensile strength, elongation at break and melt mass flow rate, the control group 3 of the recycled polyethylene high-pressure material adopted by the PE reclaimed material is inferior to the control group 2 of the crushed reclaimed material of the polyethylene plastic bottle and the control group 4 of the PE raw material in the aspects of heat shrinkage rate, tensile strength, elongation at break and melt mass flow rate, and particularly the control group 4 of the PE raw material is adopted, so that the shrinkage performance of the sheath material prepared from the recycled polyethylene high-pressure material adopted by the PE reclaimed material and the appearance and mechanical performance after cabling are optimal according to the embodiment 1 and the control groups 1-4.
3. In order to detect the effect of the PE reclaimed material which is a mixture of the polyethylene agricultural greenhouse reclaimed material and one of the polyethylene plastic bottle crushed reclaimed material, the polyethylene cable and optical cable crushed leather reclaimed material and the recycled polyethylene high-pressure material, the performances of the sheath materials of the control group 5 to the control group 7 are measured, and the results are as follows:
in the above performance test data of the sheath materials of example 1, the comparative group 5 and the comparative group 7, it can be seen that the PE reclaimed material adopts polyethylene green house reclaimed material and recycled polyethylene high-pressure material, and the weight is 1: the jacket material prepared in control 7 of 1 has the best performance in terms of heat shrinkage, tensile strength, elongation at break and melt mass flow rate, and the performance is better than that of example 1, control 5 and control 6. In addition, compared with the control group 1 and the control group 2, the sheath materials prepared by adding the polyethylene green house recycled material into the PE recycled material have greatly improved performances in the aspects of heat shrinkage, tensile strength, elongation at break and melt mass flow rate, so that when the PE recycled material is a mixture of the polyethylene green house recycled material and recycled polyethylene high-pressure material, the prepared sheath materials have greatly improved performances in the aspects of heat shrinkage, tensile strength, elongation at break and melt mass flow rate.
4. In order to detect the influence of the weight ratio of the polyethylene agricultural greenhouse recycled material and the recycled polyethylene high-pressure material mixture on the performance of the prepared sheath material, the performance of the sheath materials of a control group 8 to a control group 11 is measured, and the results are as follows:
in the above performance test data of the sheath materials of example 1 and the comparison groups 7 to 11, it can be seen that when the weight ratio of the polyethylene green house recycled material to the recycled polyethylene high-pressure material used as the PE recycled material is greater than 1, that is, when the weight of the polyethylene green house recycled material is greater than the weight of the recycled polyethylene high-pressure material, the prepared sheath material has better performance in terms of thermal shrinkage, tensile strength, elongation at break and melt mass flow rate, so that the PE recycled material is a mixture of the polyethylene green house recycled material and the recycled polyethylene high-pressure material.
The above-mentioned embodiments are intended to illustrate the objects, aspects and advantages of the present invention, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. The preparation method of the low-shrinkage HDPE sheath material is characterized by comprising the following steps: the paint comprises the following ingredients in parts by weight: 70-80 parts of PE regenerated material, 10-15 parts of LLDPE resin, 1-5 parts of nucleating agent, 3-7 parts of filling master batch, 2-5 parts of carbon black master batch and 0.3-0.6 part of antioxidant.
2. The preparation method of the low-shrinkage HDPE sheathing compound as claimed in claim 1, wherein: the PE reclaimed material is at least one of polyethylene agricultural greenhouse reclaimed material, polyethylene cable and optical cable crushed leather reclaimed material, polyethylene plastic bottle crushed reclaimed material and recycled polyethylene high-pressure material.
3. The preparation method of the low-shrinkage HDPE sheathing compound as claimed in claim 2, wherein: 72-78 parts of PE regenerated material, 12-14 parts of LLDPE resin, 2-4 parts of nucleating agent, 4-6 parts of filling master batch, 3-4 parts of carbon black master batch and 0.4-0.5 part of antioxidant.
4. The preparation method of the low-shrinkage HDPE sheathing compound as claimed in claim 1, wherein: the PE reclaimed material is one or two of a polyethylene agricultural greenhouse reclaimed material and a recycled polyethylene high-pressure material.
5. Preparation of a low shrink HDPE sheathing compound as claimed in any of claims 1 to 4, characterized in that: the LLDPE resin is a bimodal LLDPE.
6. Preparation of a low shrink HDPE sheathing compound as claimed in any of claims 1 to 4, characterized in that: the nucleating agent is one or two of calcium oxide and zinc stearate, and the nucleating agent takes POE as a carrier.
7. Preparation of a low shrink HDPE sheathing compound as claimed in any of claims 1 to 4, characterized in that: the filling master batch is composed of at least one of mica powder, kaolin and barium sulfate.
8. Preparation of a low shrink HDPE sheathing compound as claimed in any of claims 1 to 4, characterized in that: the antioxidant is bisphenol A.
9. Preparation of a low shrink HDPE sheathing compound as claimed in any of claims 1 to 4, characterized in that: the carbon black master batch is carbon black N22015-25.
10. Preparation of a low shrink HDPE sheathing compound as claimed in any of claims 1 to 4, characterized in that: the preparation method comprises the following steps:
1) adding the PE regenerated material and LLDPE resin into a stirrer, stirring for 0.5-1h at 80-85 ℃, then pouring the nucleating agent, the filling master batch, the carbon black master batch and the antioxidant into the stirrer according to the proportion, stirring for 1-3h at the stirring temperature of 80-100 ℃, then cooling the materials to 40-55 ℃, and discharging;
2) putting the materials into a double-screw extruder for extrusion molding, wherein the processing temperature of the double-screw extruder is 130-150 ℃, and cooling and drying the finished product of the extrusion molding;
3) and (4) granulating, air-drying, packaging and warehousing the cooled and blow-dried sheath material.
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| CN202110733417.9A CN113637248A (en) | 2021-06-29 | 2021-06-29 | Preparation of low-shrinkage HDPE sheath material |
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| CN202110733417.9A CN113637248A (en) | 2021-06-29 | 2021-06-29 | Preparation of low-shrinkage HDPE sheath material |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115042345A (en) * | 2022-06-30 | 2022-09-13 | 上杭鑫昌龙实业有限公司 | Regenerated product containing crosslinked polyethylene regenerated material and preparation method thereof |
| CN115651292A (en) * | 2022-09-26 | 2023-01-31 | 中广核拓普（四川）新材料有限公司 | Environment-friendly full-regeneration polyethylene optical cable sheath material and preparation method thereof |
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| CN102643468A (en) * | 2012-05-03 | 2012-08-22 | 青州市鲁创再生资源有限公司 | Regeneration polyethylene resin combination for sheath production and preparation method thereof |
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