CN112694655A - 125 ℃ resistant ultraviolet crosslinking polyethylene insulating material and preparation method thereof - Google Patents
125 ℃ resistant ultraviolet crosslinking polyethylene insulating material and preparation method thereof Download PDFInfo
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- CN112694655A CN112694655A CN202011534453.4A CN202011534453A CN112694655A CN 112694655 A CN112694655 A CN 112694655A CN 202011534453 A CN202011534453 A CN 202011534453A CN 112694655 A CN112694655 A CN 112694655A
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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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/24—Crosslinking, e.g. vulcanising, of macromolecules
- C08J3/246—Intercrosslinking of at least two polymers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/28—Treatment by wave energy or particle radiation
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
- H01B3/441—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from alkenes
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/06—Polyethene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/08—Copolymers of ethene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
- C08L2203/202—Applications use in electrical or conductive gadgets use in electrical wires or wirecoating
-
- 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
- C08L2207/062—HDPE
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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
- C08L2312/00—Crosslinking
Abstract
The invention discloses a 125 ℃ resistant ultraviolet light crosslinked polyethylene insulating material and a preparation method thereof, wherein the insulating material comprises the following components in parts by weight: 100 parts of high-density polyethylene, 10-20 parts of polyolefin elastomer, 1.0-2.0 parts of initiator, 1.0-2.0 parts of cross-linking agent, 0.4-1.0 part of antioxidant and 0.2-0.5 part of metal inhibitor. Compared with the 125 ℃ temperature-resistant silane crosslinked polyethylene insulating material in the prior art, the invention has the advantages of greatly simplified formula composition, simpler production process and quicker and more efficient use by downstream customers. Compared with the ultraviolet crosslinking polyethylene insulating material (the long-term use temperature is 90 ℃) in the prior art, the long-term use temperature can reach 125 ℃, the application field of the existing ultraviolet crosslinking polyethylene insulating material is expanded, and the added value of the product is increased.
Description
Technical Field
The invention relates to an ultraviolet crosslinking polyethylene insulating material capable of being applied to a 125-DEG C-resistant low-voltage wire and cable insulating layer and a preparation technology thereof.
Background
As is well known, crosslinked polyethylene has the advantages of good insulating property, simple processing, low cost, low temperature resistance, stress cracking resistance and the like, and occupies an important position in the field of insulating materials. Currently, crosslinked polyethylene mainly has four modes of peroxide crosslinking, high-energy particle radiation crosslinking, silane crosslinking and recently emerging ultraviolet crosslinking. Among them, ultraviolet crosslinking is attracting much attention because of its ease of use and high efficiency, and its market share is expanding. At present, the temperature resistance level of the ultraviolet crosslinking polyethylene insulating material on the market is basically 90 ℃, and the ultraviolet crosslinking polyethylene insulating material can meet the requirements of general occasions. However, in the occasions with higher requirements on high temperature resistance, such as motor equipment cables, geothermal cables and the like, the conventional ultraviolet crosslinking polyethylene insulating material cannot meet the application requirements.
Based on the background, the invention provides the ultraviolet crosslinking polyethylene insulating material which has good high temperature resistance and can resist heat for a long time to 125 ℃. Compared with the silane crosslinked polyethylene insulating material capable of resisting the temperature of 125 ℃ in the patent ZL201210568744.4, the silane crosslinked polyethylene insulating material has the advantages of simple composition, simple and convenient preparation, high production efficiency and the like.
Disclosure of Invention
The invention aims to provide a 125 ℃ temperature-resistant ultraviolet crosslinking polyethylene insulating material and a preparation method thereof, so as to meet the requirement of people on more efficiently producing 125 ℃ temperature-resistant low-voltage cable insulating materials.
The 125 ℃ resistant ultraviolet crosslinking polyethylene insulating material comprises the following components in parts by weight:
wherein the density of the high-density polyethylene is 0.940-0.950 g/cm3The melt flow index is 0.2-2.0 g/10min (190 ℃, 5.0 kg).
The polyolefin elastomer is a metallocene catalytic copolymer of ethylene-butylene, and the density is 0.870-0.890 g/cm3The melt flow index is 1.0-10.0 g/10min (190 ℃, 2.16 kg).
The initiator is one or more of 2-hydroxy-2-methyl-1-phenyl-1-acetone (HMPP), 1-hydroxycyclohexyl phenyl ketone, 2-methyl-1- (4-methylthiophenyl) -2-morpholinyl-1-acetone and 2,4, 6-trimethylbenzoyl-diphenyl phosphine oxide.
The cross-linking agent is one or more of trimethylolpropane triacrylate (TMPTA), trimethylolpropane trimethacrylate (TMPTMA), triallyl cyanurate (TAC) and triallyl isocyanurate (TAIC).
The antioxidant is one or more of 4, 6-di (octylthiomethyl) o-cresol (trade name antioxidant 1520), 3, 5-di-tert-butyl-4-hydroxybenzoic acid-2, 4-di-tert-butylphenyl ester (trade name antioxidant 120), ditolyl dibutyl benzofuranone (trade name antioxidant HP136) and N-phenyl-2-naphthylamine (trade name antioxidant D).
The metal inhibitor is one or two of (3, 5-di-tert-butyl-4-hydroxyphenyl) oxalyl propionate (diimino-2, 1-ethylene ester) (trade name: 697) and bis [ (phenylmethylene) hydrazide ] oxalic acid.
The invention also provides a preparation method of the 125 ℃ resistant ultraviolet crosslinking polyethylene insulating material, which comprises the following steps:
(1) uniformly mixing an initiator, a cross-linking agent, an antioxidant and a metal inhibitor into paste by a high-speed mixer;
(2) adding high-density polyethylene into a double-screw extruder through main feeding, and adding the uniformly mixed pasty small materials into the middle section of the extruder according to the formula proportion through an injection feeding device;
(3) melting the materials in a double-screw extruder, then bracing at a neck mould, cooling with cold water, granulating, drying and packaging.
The insulating material prepared by the invention has the following advantages: 1. selected high density polyethylene and polyolefin elastomers are used as the principal resins. The high-density polyethylene has high Vicat softening point and high thermal deformation temperature, and the heat resistance is greatly improved after crosslinking, so that the long-term 125 ℃ high-temperature resistant grade of the material is fundamentally ensured. The ethylene-butylene elastomer copolymer is used as a toughening agent, so that the flexibility of high-density polyethylene can be greatly increased, the flexibility of the material can be equivalent to that of low-density crosslinked polyethylene, and the bending of the cable is not influenced; 2. compared with the silane crosslinked polyethylene insulating material which can resist the temperature of 125 ℃ in the patent ZL201210568744.4, the insulating material is simple in composition and convenient and fast to produce. 3. The method adopts an ultraviolet light crosslinking mode, can enable a cable factory to finish extrusion, crosslinking, slitting, printing and packaging on line, does not need to be boiled and put on high-energy particle beam equipment for irradiation compared with the traditional silane crosslinking and high-energy particle beam irradiation crosslinking, and greatly improves the production efficiency of the cable factory.
Detailed Description
Example 1
The following materials and the method disclosed by the invention are used for preparing the 125 ℃ resistant ultraviolet crosslinking polyethylene insulating material:
example 2
The following materials and the method disclosed by the invention are used for preparing the 125 ℃ resistant ultraviolet crosslinking polyethylene insulating material:
example 3
The following materials and the method disclosed by the invention are used for preparing the 125 ℃ resistant ultraviolet crosslinking polyethylene insulating material:
the 125 ℃ ultraviolet-light-resistant crosslinked polyethylene insulating material prepared by the three examples has excellent mechanical property and electrical property and excellent heat resistance, and is detected by adopting the YJ-3 standard in JB/T10437-one 2004, and the specific test result is shown in the following table 1:
table 1 example performance test results
Note: the power of the ultraviolet light source is 5W/cm2The irradiation time was 1 second. The air thermal aging standard refers to the aging standard of '125 ℃ halogen-free low-smoke flame-retardant crosslinking type polyolefin insulating material' in GB/T32129-2015.
The test results show that the high-density polyethylene and the polyolefin elastomer which are selected are taken as main resins, and after ultraviolet light crosslinking, the high-density polyethylene and the polyolefin elastomer have excellent indexes such as crosslinking performance, mechanical property, insulating property, high-temperature air heat aging resistance and the like. Compared with the silane crosslinked polyethylene insulating material which can resist the temperature of 125 ℃ in the patent ZL201210568744.4, the insulating material is simpler in composition, and more convenient and efficient in production.
Claims (8)
1. The 125 ℃ resistant ultraviolet crosslinking polyethylene insulating material is characterized by comprising the following components in parts by weight:
2. the 125 ℃ resistant ultraviolet crosslinked polyethylene insulation material according to claim 1, wherein the density of the high density polyethylene is 0.940-0.950 g/cm3The melt flow index is 0.2-2.0 g/10min (190 ℃, 5.0 kg).
3. The 125 ℃ temperature-resistant ultraviolet-crosslinked polyethylene insulation material according to claim 1, wherein the polyolefin elastomer is a metallocene catalyzed copolymer of ethylene and butylene, and the density is 0.870-0.890 g/cm3The melt flow index is 1.0-10.0 g/10min (190 ℃, 2.16 kg).
4. The 125 ℃ temperature-resistant ultraviolet-crosslinked polyethylene insulation material according to claim 1, wherein the initiator is one or more of 2-hydroxy-2-methyl-1-phenyl-1-propanone (HMPP), 1-hydroxycyclohexyl phenyl ketone, 2-methyl-1- (4-methylthiophenyl) -2-morpholinyl-1-propanone, and 2,4, 6-trimethylbenzoyl-diphenylphosphine oxide.
5. The 125 ℃ resistant UV cross-linked polyethylene insulation material according to claim 1, wherein the cross-linking agent is one or more of trimethylolpropane triacrylate (TMPTA), trimethylolpropane trimethacrylate (TMPTMA), triallyl cyanurate (TAC), and triallyl isocyanurate (TAIC).
6. The 125 ℃ resistant ultraviolet crosslinked polyethylene insulation material according to claim 1, wherein the antioxidant is one or more of 4, 6-bis (octylthiomethyl) o-cresol (trade name antioxidant 1520), 2, 4-di-tert-butylphenyl 3, 5-di-tert-butyl-4-hydroxybenzoate (trade name antioxidant 120), ditolyl dibutyl benzofuranone (trade name antioxidant HP136), and N-phenyl-2-naphthylamine (trade name antioxidant D).
7. The 125 ℃ temperature-resistant ultraviolet-crosslinked polyethylene insulation material according to claim 1, wherein the metal inhibitor is one or two of (3, 5-di-tert-butyl-4-hydroxyphenyl) oxalyl (diimino-2, 1-ethylene) propionate (trade name 697) and bis [ (phenylmethylene) hydrazide ] oxalic acid.
8. The method for preparing the 125 ℃ resistant ultraviolet crosslinking polyethylene insulating material according to claims 1-7, which is characterized by comprising the following steps:
(1) uniformly mixing an initiator, a cross-linking agent, an antioxidant and a metal inhibitor into paste by a high-speed mixer;
(2) adding high-density polyethylene into a double-screw extruder through main feeding, and adding the uniformly mixed pasty small materials into the middle section of the extruder according to the formula proportion through an injection feeding device;
(3) melting the materials in a double-screw extruder, then bracing at a neck mould, cooling with cold water, granulating, drying and packaging.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011534453.4A CN112694655A (en) | 2020-12-22 | 2020-12-22 | 125 ℃ resistant ultraviolet crosslinking polyethylene insulating material and preparation method thereof |
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| CN202011534453.4A CN112694655A (en) | 2020-12-22 | 2020-12-22 | 125 ℃ resistant ultraviolet crosslinking polyethylene insulating material and preparation method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0490854A2 (en) * | 1990-12-07 | 1992-06-17 | Institutet Polymerutveckling Ab | Process and equipment for continuous crosslinking of polymeric materials and useful photo-initiators for the reaction |
| CN104231412A (en) * | 2014-09-16 | 2014-12-24 | 安徽美腾特种电缆材料有限公司 | Cold-resistant type one-step process silane crosslinked polyolefin cable material and preparation method thereof |
| CN109081976A (en) * | 2018-05-12 | 2018-12-25 | 合肥光冉高分子材料科技有限公司 | A kind of novel UV-LED ultraviolet light cross-linking poly-ethylene cable material and preparation method thereof |
| CN110938254A (en) * | 2019-12-11 | 2020-03-31 | 上海凯波特种电缆料厂有限公司 | LED ultraviolet light cross-linked colorful polyethylene cable material and preparation method thereof |
| CN110982157A (en) * | 2019-12-25 | 2020-04-10 | 上海新上化高分子材料有限公司 | Low-odor rapid UV-LED ultraviolet light crosslinked polyethylene insulating material and preparation method thereof |
-
2020
- 2020-12-22 CN CN202011534453.4A patent/CN112694655A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0490854A2 (en) * | 1990-12-07 | 1992-06-17 | Institutet Polymerutveckling Ab | Process and equipment for continuous crosslinking of polymeric materials and useful photo-initiators for the reaction |
| CN104231412A (en) * | 2014-09-16 | 2014-12-24 | 安徽美腾特种电缆材料有限公司 | Cold-resistant type one-step process silane crosslinked polyolefin cable material and preparation method thereof |
| CN109081976A (en) * | 2018-05-12 | 2018-12-25 | 合肥光冉高分子材料科技有限公司 | A kind of novel UV-LED ultraviolet light cross-linking poly-ethylene cable material and preparation method thereof |
| CN110938254A (en) * | 2019-12-11 | 2020-03-31 | 上海凯波特种电缆料厂有限公司 | LED ultraviolet light cross-linked colorful polyethylene cable material and preparation method thereof |
| CN110982157A (en) * | 2019-12-25 | 2020-04-10 | 上海新上化高分子材料有限公司 | Low-odor rapid UV-LED ultraviolet light crosslinked polyethylene insulating material and preparation method thereof |
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Application publication date: 20210423 |