CN115286864A - Irradiation crosslinking polyolefin heat-shrinkable tube material and preparation method and application thereof - Google Patents
Irradiation crosslinking polyolefin heat-shrinkable tube material and preparation method and application thereof Download PDFInfo
- Publication number
- CN115286864A CN115286864A CN202211094271.9A CN202211094271A CN115286864A CN 115286864 A CN115286864 A CN 115286864A CN 202211094271 A CN202211094271 A CN 202211094271A CN 115286864 A CN115286864 A CN 115286864A
- Authority
- CN
- China
- Prior art keywords
- shrinkable tube
- polyolefin heat
- density polyethylene
- tube material
- antioxidant
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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
- C08L23/08—Copolymers of ethene
- C08L23/0846—Copolymers of ethene with unsaturated hydrocarbons containing atoms other than carbon or hydrogen
- C08L23/0869—Copolymers of ethene with unsaturated hydrocarbons containing atoms other than carbon or hydrogen with unsaturated acids, e.g. [meth]acrylic acid; with unsaturated esters, e.g. [meth]acrylic acid esters
-
- 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
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/18—Applications used for pipes
-
- 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)
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2312/00—Crosslinking
- C08L2312/06—Crosslinking by radiation
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses an irradiation cross-linking polyolefin heat-shrinkable tube material and a preparation method and application thereof, wherein the raw materials of the polyolefin heat-shrinkable tube material comprise a resin matrix, metallocene LLDPE (linear low density polyethylene) grafted maleic anhydride, nano active calcium carbonate, wollastonite powder, an antioxidant, a lubricant, a cross-linking sensitizer and optionally contained color master batches, wherein the resin matrix is composed of an ethylene-butyl acrylate copolymer, ethylene propylene diene monomer, low density polyethylene and linear low density polyethylene; preparation: weighing various raw materials according to a formula, uniformly stirring, mixing by a closed mill, and then extruding and granulating by a double-screw extruder to prepare a polyolefin heat-shrinkable tube material, wherein a die head is provided with a filter screen for filtering impurities in a melt before extrusion and granulation; the polyolefin heat-shrinkable tube material disclosed by the invention can give consideration to high fluidity and high resistance, can be used for preparing a heat-shrinkable tube suitable for medium-high voltage (such as 10kV-30 kV) and less in impurities, and can be extruded at a high speed when being prepared.
Description
Technical Field
The invention relates to the technical field of heat shrinkable tubes, in particular to an irradiation crosslinked polyolefin heat shrinkable tube material and a preparation method and application thereof.
Background
Heat shrinkable tubes (also called heat shrinkable tubes or heat shrinkable sleeves) have a special function of shrinking when exposed to heat, and are now widely used in the fields of aerospace, ships, automobiles, electric power, household appliances, communication, petrochemical industry and the like. The heat shrinkable tube has the functions of sealing, moisture-proof, water-proof, corrosion prevention of a line, vibration and dislocation prevention and the like for the connection part and the branch of the electric wire and the cable, so that the heat shrinkable tube is required to have good physical and electrical properties and good chemical properties such as corrosion resistance, weather resistance and the like.
However, the existing heat shrinkable tube is difficult to be used under medium and high pressure (such as 10kV-30 kV), the insulation performance still needs to be improved, and at the same time, many impurities exist, and the heat shrinkable tube is easy to break in the blow molding process, and at the same time, the production extrusion speed is slow in the extrusion process, so that the production efficiency is difficult to improve, the production cost is increased indirectly, and the industrial production is not facilitated.
In the actual operation process, although impurities in the system can be removed by using a filtering device in the melt extrusion process, the problems existing at present are that: because the addition of filtering equipment such as a filtering net, the requirement on the fluidity of the melt is extremely high, the flow pressure of the melt per se needs to be small under the extrusion condition, otherwise, the filtering net is easy to break, and the filtering effect is lost, while the existing heat-shrinkable tube material is difficult to consider high fluidity and high resistance, and cannot be extruded at high speed when used for preparing the heat-shrinkable tube, so that the phenomenon of losing the other phenomenon is obviously caused.
Disclosure of Invention
The invention aims to overcome one or more defects in the prior art, and provides an improved polyolefin heat-shrinkable tube material which has high flowability and high resistance, can be used for preparing a heat-shrinkable tube suitable for medium-high pressure (such as 10kV-30 kV) and low in impurity, and can be extruded at high speed when the heat-shrinkable tube is prepared.
The invention also provides a preparation method of the polyolefin heat-shrinkable tube material.
The invention also provides an irradiation crosslinking polyolefin heat shrinkable tube prepared by adopting the polyolefin heat shrinkable tube material.
In order to achieve the purpose, the invention adopts a technical scheme that:
a polyolefin heat-shrinkable tube material, the raw materials of which comprise a resin matrix, an antioxidant, a lubricant, a crosslinking sensitizer and optionally a color master, wherein:
the resin matrix is composed of ethylene-butyl acrylate copolymer (EBA), ethylene Propylene Diene Monomer (EPDM), low-density polyethylene (LDPE) and linear low-density polyethylene (LLDPE), and the feeding mass ratio of the ethylene-butyl acrylate copolymer to the ethylene propylene diene monomer to the low-density polyethylene to the linear low-density polyethylene is 20-55: 10-15: 20-35: 10-20;
the polyolefin heat-shrinkable tube material also comprises the raw materials of metallocene LLDPE grafted maleic anhydride, nano active calcium carbonate and wollastonite powder;
the feeding mass ratio of the resin matrix, the metallocene LLDPE grafted maleic anhydride, the nano active calcium carbonate, the wollastonite powder, the antioxidant, the lubricant, the crosslinking sensitizer and the color master is 1: 0.05-0.15: 0.3-0.8: 0.05-0.15: 0.01-0.025: 0.01-0.035: 0.01-0.025: 0-0.035.
According to some preferred aspects of the present invention, the ethylene-butyl acrylate copolymer has a melt index of 3 to 10g/10min, wherein the butyl acetate content is 17% to 20%.
According to some preferred aspects of the present invention, the ethylene-propylene-diene rubber has a mooney viscosity of 20-40.
According to some preferred aspects of the invention, the low density polyethylene has a melt index of 2 to 3g/10min.
According to some preferred aspects of the invention, the linear low density polyethylene has a melt index of 18 to 25g/10min.
According to some preferred aspects of the invention, the metallocene LLDPE grafted maleic anhydride has a melt index of 1-1.5g/10min and a grafting yield of 1% -1.5%.
In the invention, the melt index is determined by GBT 3682.1-2018 standard at 190 ℃ according to the test load of 2.16 Kg; mooney viscosity test conditions are ML (1 + 4) 125 ℃.
In the present invention, the selection of the above resins of a particular melt index or Mooney viscosity for combination is more conducive to the preparation of products having a combination of high flowability, excellent electrical properties and a better extrusion surface.
According to some preferred aspects of the present invention, the ratio of the feeding mass of the metallocene LLDPE grafted maleic anhydride to the total feeding mass of the nano active calcium carbonate and the wollastonite powder is 1: 4-16.
According to some preferred aspects of the present invention, the nano activated calcium carbonate has a mesh number of 3000 mesh or more.
According to some preferred aspects of the invention, in the raw materials of the polyolefin heat-shrinkable tube material, by mass, 90-95 parts of a resin matrix, 5-10 parts of metallocene LLDPE grafted maleic anhydride, 30-70 parts of nano active calcium carbonate, 5-10 parts of wollastonite powder, 1-2 parts of an antioxidant, 1-3 parts of a lubricant, 1-2 parts of a crosslinking sensitizer and 0-3 parts of a color master batch are added, and the total adding amount of the resin matrix and the metallocene LLDPE grafted maleic anhydride is 100 parts.
According to some preferred aspects of the invention, the lubricant comprises an ethylene-vinyl acetate copolymer wax (EVA wax), a rheology agent APP, and optionally a silicone masterbatch.
According to some preferred aspects of the present invention, the antioxidant comprises antioxidant 1010 and at least one selected from the group consisting of antioxidant 1024, antioxidant 168 and antioxidant DLTP.
According to some preferred aspects of the present invention, the crosslinking sensitizer is triallyl isocyanurate (TAIC), and commercially available products with a purity of 99% or more can be selected.
According to some preferred aspects of the invention, the color master batch takes the ethylene-vinyl acetate copolymer as a carrier, the content of the toner is 20-30%, and the color master batch has good dispersibility in a system.
The invention provides another technical scheme that: a preparation method of the polyolefin heat shrinkable tube material comprises the following steps: weighing the raw materials according to the formula, uniformly stirring in a kneading machine, mixing by an internal mixer, and extruding and granulating by a double-screw extruder to prepare the polyolefin heat-shrinkable tube material.
According to some preferred aspects of the invention, the temperature of the mixing is 135-145 ℃.
According to some preferred aspects of the invention, the temperature of the twin-screw extruder is: a feeding section: melting section at 100-120 deg.C: 130-140 ℃, die head: 140-150 ℃.
According to some preferred aspects of the invention, the die head is provided with a 100-150 mesh filter screen for filtering impurities in the melt before extrusion granulation, the material of the invention has excellent fluidity after melting, and the 100-150 mesh filter screen can be used for filtering and removing impurities and then extrusion granulation.
In some preferred and specific embodiments of the present invention, the mesh number of the filter screen is 100 to 120 mesh. According to a particular aspect of the invention, the mesh number of the filter screen is 120 mesh.
The invention provides another technical scheme that: the polyolefin heat shrinkable tube material is applied to preparing radiation cross-linked polyolefin heat shrinkable tubes.
The invention provides another technical scheme that: the radiation cross-linked polyolefin heat-shrinkable tube adopts the polyolefin heat-shrinkable tube material as a raw material, then the heat-shrinkable tube is extruded by an extruder, radiation cross-linking (electron accelerator treatment) is carried out to ensure that the heat-shrinkable tube has memory property, and then the tube is expanded. When the radiation cross-linked polyolefin heat-shrinkable tube is used in the later period, the radial shrinkage can be realized only by heating the radiation cross-linked polyolefin heat-shrinkable tube.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:
based on a large amount of experimental research and analysis, the invention discovers that the polyolefin heat-shrinkable tube material can have excellent fluidity by adopting the combination of ethylene-butyl acrylate copolymer (EBA), ethylene Propylene Diene Monomer (EPDM), low-density polyethylene (LDPE) and linear low-density polyethylene (LLDPE) according to a specific proportion and under the synergistic action of metallocene LLDPE grafted maleic anhydride, nano active calcium carbonate and wollastonite powder, so that a filter screen can be adopted in the preparation process for filtering and removing impurities, the extrusion granulation of the material is not influenced, and further, the high-speed extrusion can be realized during the later-stage preparation of the heat-shrinkable tube, so that the production efficiency of enterprises is improved; particularly, the material disclosed by the invention has excellent electrical property, high resistance, good insulating property, relatively softer hardness and wider application range, and can be used for sleeves of some flexible cables.
Detailed Description
The above-described scheme is further illustrated below with reference to specific examples; it is to be understood that these embodiments are illustrative of the principles, essential features and advantages of the invention, and that the invention is not limited in scope by the following embodiments; the implementation conditions used in the examples can be further adjusted according to specific requirements, and the implementation conditions not indicated are generally the conditions in routine experiments.
Not specifically illustrated in the following examples, all starting materials are commercially available or prepared by methods conventional in the art. In the following, in the art, the temperature value of each section of the screw extruder may normally fluctuate, and generally fluctuates by about ± 10 degrees celsius, and is preferably controlled by about ± 5 degrees celsius.
Example 1
This example provides a polyolefin heat shrinkable tube material having the following formulation as shown in table 1 below.
TABLE 1
The preparation method of the polyolefin heat-shrinkable tube material comprises the following steps: weighing various raw materials according to a formula, uniformly stirring in a kneading machine, mixing by an internal mixer, and extruding and granulating by a double-screw extruder to prepare the polyolefin heat-shrinkable tube material;
wherein the mixing temperature is 140 +/-5 ℃, and the temperature of the double-screw extruder is as follows: a feeding section: 110 +/-5 ℃ and a melting section: 135 +/-5 ℃ and a die head: 145 +/-5 ℃, and a 120-mesh filter screen is arranged at the die head and used for filtering impurities in the melt before extrusion granulation.
Example 2
This example provides a polyolefin heat shrinkable tube material, and the formulation of the raw materials of the material is shown in table 2 below.
TABLE 2
The preparation method is the same as example 1.
Example 3
This example provides a polyolefin heat shrinkable tube material having the following formulation as shown in table 3 below.
TABLE 3
The preparation method is the same as example 1.
Comparative example 1
Basically, the method is the same as the embodiment 1, and the differences are that: the ethylene-butyl acrylate copolymer is not added in the raw materials of the formula, and the addition amounts of the ethylene propylene diene monomer, the low-density polyethylene and the linear low-density polyethylene are respectively increased by 1/3 of the addition amount of the ethylene-butyl acrylate copolymer.
Comparative example 2
Basically, the method is the same as the method of the embodiment 1, and the method only differs from the method in that: the ethylene-butyl acrylate copolymer is replaced by the ethylene-vinyl acetate copolymer with the same melt index, and the content of vinyl acetate is the same as that of butyl acrylate.
Comparative example 3
Basically, the method is the same as the method of the embodiment 1, and the method only differs from the method in that: the ethylene propylene diene monomer is not added in the raw materials of the formula, and the addition amounts of the ethylene-butyl acrylate copolymer, the low density polyethylene and the linear low density polyethylene are respectively increased by 1/3 of the addition amount of the ethylene propylene diene monomer.
Comparative example 4
Basically, the method is the same as the embodiment 1, and the differences are that: the raw materials of the formula are not added with low-density polyethylene, and the addition amounts of the ethylene-butyl acrylate copolymer, the ethylene propylene diene monomer and the linear low-density polyethylene are respectively increased by 1/3 of the addition amount of the low-density polyethylene.
Comparative example 5
Basically, the method is the same as the embodiment 1, and the differences are that: the nano active calcium carbonate is replaced by aluminum hydroxide in the raw materials of the formula.
Performance testing
1. The polyolefin heat shrinkable tube materials prepared in the above examples 1 to 3 and comparative examples 1 to 5 were subjected to the following performance tests, and the specific results are shown in Table 4.
TABLE 4
Note: "√" indicates that the specification requirement is satisfied, and "×" indicates that the specification requirement is not satisfied.
The endpoints of the ranges and any values disclosed herein are not limited to the precise range or value, and such ranges or values should be understood to encompass values close to those ranges or values. For numerical ranges, each range between its endpoints and individual point values, and each individual point value can be combined with each other to give one or more new numerical ranges, and such numerical ranges should be construed as specifically disclosed herein.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered in the protection scope of the present invention.
Claims (10)
1. The polyolefin heat-shrinkable tube material is prepared from raw materials including a resin matrix, an antioxidant, a lubricant, a crosslinking sensitizer and optionally a color master batch, and is characterized in that:
the resin matrix is composed of ethylene-butyl acrylate copolymer, ethylene propylene diene monomer, low-density polyethylene and linear low-density polyethylene, and the feeding mass ratio of the ethylene-butyl acrylate copolymer to the ethylene propylene diene monomer to the low-density polyethylene to the linear low-density polyethylene is 20-55: 10-15: 20-35: 10-20;
the raw materials of the polyolefin heat-shrinkable tube material also comprise metallocene LLDPE grafted maleic anhydride, nano active calcium carbonate and wollastonite powder;
the feeding mass ratio of the resin matrix, the metallocene LLDPE grafted maleic anhydride, the nano active calcium carbonate, the wollastonite powder, the antioxidant, the lubricant, the crosslinking sensitizer and the color master is 1: 0.05-0.15: 0.3-0.8: 0.05-0.15: 0.01-0.025: 0.01-0.035: 0.01-0.025: 0-0.035.
2. The polyolefin heat shrink tubing material of claim 1, wherein: the melt index of the ethylene-butyl acrylate copolymer is 3-10g/10min, wherein the content of butyl acrylate vinegar is 17% -20%.
3. The polyolefin heat shrink tubing material of claim 1, wherein: the Mooney viscosity of the ethylene propylene diene monomer is 20-40;
the low density polyethylene has a melt index of 2-3g/10min;
the linear low density polyethylene has a melt index of 18 to 25g/10min.
4. The polyolefin heat shrink tubing material of claim 1, wherein: the melt index of the metallocene LLDPE grafted maleic anhydride is 1-1.5g/10min, and the grafting rate is 1% -1.5%.
5. The polyolefin heat shrink tubing material of claim 1, wherein: the ratio of the feeding mass of the metallocene LLDPE grafted maleic anhydride to the total feeding mass of the nano active calcium carbonate and the wollastonite powder is 1: 4-16.
6. The polyolefin heat shrink tubing material of claim 1, wherein: the mesh number of the nano active calcium carbonate is more than 3000 meshes.
7. The polyolefin heat shrink tubing material of claim 1, wherein: the polyolefin heat-shrinkable tube material comprises, by mass, 90-95 parts of a resin matrix, 5-10 parts of metallocene LLDPE (linear low-density polyethylene) grafted maleic anhydride, 30-70 parts of nano active calcium carbonate, 5-10 parts of wollastonite powder, 1-2 parts of an antioxidant, 1-3 parts of a lubricant, 1-2 parts of a crosslinking sensitizer and 0-3 parts of a color master, wherein the total addition amount of the resin matrix and the metallocene LLDPE grafted maleic anhydride is 100 parts.
8. The polyolefin heat shrink tubing material of any one of claims 1-7, wherein: the lubricant comprises ethylene-vinyl acetate copolymer wax, a rheological agent APP and optional silicone master batches;
the antioxidant comprises an antioxidant 1010 and at least one selected from an antioxidant 1024, an antioxidant 168 and an antioxidant DLTP;
the crosslinking sensitizer is triallyl isocyanurate; the color master batch takes ethylene-vinyl acetate copolymer as a carrier, and the content of toner is 20-30%.
9. A method of producing the polyolefin heat shrinkable tube material of any one of claims 1 to 8, characterized in that:
the preparation method comprises the following steps: weighing various raw materials according to a formula, uniformly stirring in a kneading machine, mixing by an internal mixer, and extruding and granulating by a double-screw extruder to prepare the polyolefin heat-shrinkable tube material;
wherein the mixing temperature is 135-145 ℃, and the temperature of the double-screw extruder is as follows: a feeding section: melting section at 100-120 deg.C: 130-140 ℃, die head: the temperature is 140-150 ℃, and a 100-150 mesh filter screen is arranged at the die head and is used for filtering impurities in the melt before extrusion granulation.
10. Use of the polyolefin heat shrinkable tube material of any one of claims 1 to 8 in the preparation of a radiation cross-linked polyolefin heat shrinkable tube.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211094271.9A CN115286864B (en) | 2022-09-08 | 2022-09-08 | Irradiation crosslinking polyolefin heat shrinkage tube material and preparation method and application thereof |
| CN202410399748.7A CN118290848A (en) | 2022-09-08 | 2022-09-08 | Irradiation crosslinking heat-shrinkable tubing and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211094271.9A CN115286864B (en) | 2022-09-08 | 2022-09-08 | Irradiation crosslinking polyolefin heat shrinkage tube material and preparation method and application thereof |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410399748.7A Division CN118290848A (en) | 2022-09-08 | 2022-09-08 | Irradiation crosslinking heat-shrinkable tubing and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115286864A true CN115286864A (en) | 2022-11-04 |
| CN115286864B CN115286864B (en) | 2024-04-16 |
Family
ID=83834516
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410399748.7A Pending CN118290848A (en) | 2022-09-08 | 2022-09-08 | Irradiation crosslinking heat-shrinkable tubing and application thereof |
| CN202211094271.9A Active CN115286864B (en) | 2022-09-08 | 2022-09-08 | Irradiation crosslinking polyolefin heat shrinkage tube material and preparation method and application thereof |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410399748.7A Pending CN118290848A (en) | 2022-09-08 | 2022-09-08 | Irradiation crosslinking heat-shrinkable tubing and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN118290848A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116396550A (en) * | 2022-12-12 | 2023-07-07 | 苏州希普拉斯新材料有限公司 | Polyolefin composition and preparation method and application thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103724793A (en) * | 2014-01-10 | 2014-04-16 | 长园电子（集团）有限公司 | Heat-shrinkable bus-bar protective sleeve and preparation method thereof |
| CN105801964A (en) * | 2016-04-07 | 2016-07-27 | 江苏德威新材料股份有限公司 | Elastomer sheath material for security cable and preparation method of elastomer sheath material |
| CN107286424A (en) * | 2017-06-30 | 2017-10-24 | 江苏德威新材料股份有限公司 | A kind of high withstand voltage cross-linking radiation environmental protection flame retardant composite rubber-plastic material and preparation method thereof |
-
2022
- 2022-09-08 CN CN202410399748.7A patent/CN118290848A/en active Pending
- 2022-09-08 CN CN202211094271.9A patent/CN115286864B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103724793A (en) * | 2014-01-10 | 2014-04-16 | 长园电子（集团）有限公司 | Heat-shrinkable bus-bar protective sleeve and preparation method thereof |
| CN105801964A (en) * | 2016-04-07 | 2016-07-27 | 江苏德威新材料股份有限公司 | Elastomer sheath material for security cable and preparation method of elastomer sheath material |
| CN107286424A (en) * | 2017-06-30 | 2017-10-24 | 江苏德威新材料股份有限公司 | A kind of high withstand voltage cross-linking radiation environmental protection flame retardant composite rubber-plastic material and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116396550A (en) * | 2022-12-12 | 2023-07-07 | 苏州希普拉斯新材料有限公司 | Polyolefin composition and preparation method and application thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN118290848A (en) | 2024-07-05 |
| CN115286864B (en) | 2024-04-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109438808B (en) | Silane crosslinked polyethylene insulating material for heating cable and preparation method and application thereof | |
| CN102134348B (en) | Polyolefin semiconductive composite for organosilane crosslinked overhead cables with rated voltage of less than or equal to 20KV | |
| CN111004433A (en) | Irradiation crosslinking low-smoke halogen-free sheath material for photovoltaic cable and preparation method thereof | |
| CN111303516A (en) | Environment-friendly thermoplastic strippable semiconductive shielding material for power cable insulation and preparation method thereof | |
| CN110938274B (en) | Silane cross-linked semiconductive shielding material and preparation method and application thereof | |
| KR20200011947A (en) | Reactive Formulation of Ethylene Vinyl Acetate | |
| CN111961274A (en) | Insulating material for photovoltaic cable and preparation method thereof | |
| CN113150430B (en) | Self-crosslinking polyethylene heat-shrinkable tube material and preparation method and application thereof | |
| CN109777027B (en) | Halogen-free flame-retardant conductive elastomer for data line electromagnetic shielding and preparation method thereof | |
| CN115286864B (en) | Irradiation crosslinking polyolefin heat shrinkage tube material and preparation method and application thereof | |
| CN112980102A (en) | Charging pile cable material and preparation method thereof | |
| CN113621191A (en) | Regenerated polyethylene cable sheath material and preparation method thereof | |
| CN105153621A (en) | Anti-pre-crosslinking rapid-solidification low-smoke zero-halogen flame-retardant silane crosslinking nano-modified polyolefin composition | |
| CN105219006B (en) | The automotive line heat-resisting weather-proof polypropylene nano-composite insulating material of halogen-free flameproof and its preparation technology | |
| CN116135921B (en) | Silane crosslinked polyolefin flame-retardant cable material for energy storage cable, and preparation method and application thereof | |
| CN105061848A (en) | 36V self-limiting temperature increase-associated electric heating electric cable core belt material and preparation method thereof | |
| CN108395610A (en) | A kind of carbon nanotube shield semiconductors material and preparation method thereof | |
| CN104004265A (en) | Inflaming retarding polyolefin cable material and preparing method and application thereof | |
| CN113698723A (en) | Polypropylene-based thermoplastic semiconductive shielding material for environment-friendly cable and preparation method thereof | |
| CN1062879C (en) | Semiconductive polyolefine as external shielding material of cable | |
| CN101696293A (en) | Semi-conducting low-medium voltage fire retardant single-wall heat-shrinkable tube and preparation method thereof | |
| CN108239329B (en) | Thermosetting halogen-free flame-retardant material and preparation method thereof | |
| CN117362997B (en) | Conductive copper bar insulation rubber coating and preparation method | |
| CN115806718B (en) | Silane crosslinked polyethylene insulating material and preparation method thereof | |
| JP3902025B2 (en) | Method for reclaiming crosslinked polyolefin |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |