CN111647225A - Support strip material for cold-contraction cable accessory and preparation method thereof - Google Patents
Support strip material for cold-contraction cable accessory and preparation method thereof Download PDFInfo
- Publication number
- CN111647225A CN111647225A CN202010439662.4A CN202010439662A CN111647225A CN 111647225 A CN111647225 A CN 111647225A CN 202010439662 A CN202010439662 A CN 202010439662A CN 111647225 A CN111647225 A CN 111647225A
- Authority
- CN
- China
- Prior art keywords
- cold
- strip material
- support strip
- parts
- polypropylene
- 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.)
- Withdrawn
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
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
-
- 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
-
- 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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/08—Polymer mixtures characterised by other features containing additives to improve the compatibility between two polymers
-
- 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
- C08L2205/24—Crystallisation aids
-
- 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
- C08L2205/24—Crystallisation aids
- C08L2205/242—Beta spherulite nucleating agents
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Laminated Bodies (AREA)
Abstract
The invention relates to a support strip material for cold-shrink cable accessories and a preparation method thereof, belonging to the technical field of cable accessories. The support strip material for the cold-shrink cable accessory comprises the following raw materials in parts by weight: 100 parts of homopolymerized polypropylene, 10-50 parts of copolymerized polypropylene, 10-50 parts of POE cold-resistant toughening agent, 0.1-3 parts of nucleating agent, 1-3 parts of oxidant, 3-10 parts of compatilizer and 3-10 parts of ethylene propylene diene monomer. The support strip material for the cold-shrink cable accessory has the advantages of small density, light weight, heat resistance and corrosion resistance, and also has the characteristics of impact resistance and low-temperature embrittlement resistance; the invention also provides a simple and feasible preparation method, and is beneficial to industrial production.
Description
Technical Field
The invention relates to a support strip material for cold-shrink cable accessories and a preparation method thereof, belonging to the technical field of cable accessories.
Background
In recent years, along with the high-speed development of economy, the urbanization process is accelerated, the deep development of rural power grid transformation and the starting of urban power grid transformation are realized, and the use of power cables in a power supply system is more and more extensive. The development of cable accessories necessary for operation as a cable system is also rapidly progressing with the updating of cable technology. The cold-contraction technology is popular with the majority of users in the power cable accessory industry and the communication industry due to the characteristics of simple and convenient use, high safety and high reliability.
The cable accessories all adopt a cold contraction technology, namely, a silicon rubber product is pre-expanded in the elastic range, a plastic support bar is made into a support tube and placed in the silicon rubber product, the expanded silicon rubber product is sleeved on the cable, and after the installation is completed, the plastic support bar is only required to be drawn out, and the silicon rubber product is rapidly contracted and tightly hooped on the cable body.
The supporting strip made of the existing material has the defects of high-temperature softening and collapse and low-temperature brittleness and fracture, so that the supporting strip cannot be smoothly drawn out in the actual use process, and a silicon rubber product is not well attached to the surface of a cable, so that great material and labor waste is caused.
Disclosure of Invention
The invention aims to provide a support strip material for cold-shrink cable accessories, which not only has the advantages of small density, light weight, heat resistance and corrosion resistance, but also has the characteristics of impact resistance and low-temperature brittle fracture resistance; the invention also provides a simple and feasible preparation method, and is beneficial to industrial production.
The support strip material for the cold-shrink cable accessory comprises the following raw materials in parts by weight:
the physical parameters of the homo-polypropylene are as follows:
the physical parameters of the polypropylene copolymer are as follows:
the POE cold-resistant toughening agent is at least one of a high polymer of ethylene and butylene or a high polymer of ethylene and octene, wherein the high polymer of ethylene and butylene or the high polymer of ethylene and octene is prepared by adopting a metallocene catalyst.
The nucleating agent is one or two of an alpha crystal form nucleating agent or a beta crystal form nucleating agent.
The antioxidants are phenols (monophenols, bisphenols, triphenols, polyphenols, hydroquinones, thiobisphenols) or amines (naphthylamines, diphenylamines, hydroquinones, quinoline derivatives, in addition to phosphites, thioesters and others).
The compatibilizer is a maleic anhydride grafted PP blend.
The physical parameters of the ethylene propylene diene monomer are as follows:
| item | Index (I) |
| Appearance of the product | Translucent, colorless to milky-white to light amber solid |
| Mooney viscosity ML (1+4)100 DEG C | 30 to 120 (highest 135) |
| Glass transition temperature/. degree.C | -60～-50 |
| Surface tension/(mN/m) | 25～35 |
| Lowest rebound temperature/. degree.C | -30 |
| Rebound resilience/%) | 50～80 |
The preparation method of the support strip material for the cold-shrink cable accessory comprises the following steps:
(1) physically mixing homo-polypropylene, co-polypropylene, POE cold-resistant toughening agent, nucleating agent, antioxidant, compatilizer and ethylene propylene diene monomer rubber according to a formula;
(2) and pouring the mixture into a feeding hopper of a double-screw extruder, controlling the screw speed of the double-screw extruder to be 230-270 r/min and the temperature of a machine head to be 205-215 ℃, rolling the machine head by using two paired cylindrical dies, and cooling and shaping the plastic by using cooling water.
The invention fully utilizes the characteristics of different molecular structures of two raw materials of the homopolymerized polypropylene and the partially copolymerized polypropylene to make up the defects and deficiencies of single polypropylene by mixing, adds the ethylene propylene diene monomer rubber to improve the toughness, adds the POE cold-resistant toughening agent to improve the low-temperature cold resistance, and improves the physical and chemical properties by means of the nucleating agent, the antioxidant and the compatilizer, thereby achieving the purposes of solving the defects of low-temperature brittle fracture and high-temperature softening collapse and resisting oxidation and being durable.
The invention has the following beneficial effects:
(1) the formula of the invention has scientific and reasonable design, wide raw material source and low production cost;
(2) the support strip material for the cold-shrink cable accessory, which is prepared by the invention, not only has the advantages of low density, light weight, heat resistance and corrosion resistance of polypropylene, but also has the characteristics of impact resistance and low-temperature brittle fracture resistance;
(3) the support strip material for the cold-contraction cable accessory prepared by the invention has large support force and can pass a high-temperature test for 4 hours at the temperature of 80 ℃; can resist low temperature and does not break at minus 30 ℃.
(4) The preparation method of the support strip material for the cold-shrink cable accessory is simple, feasible, scientific and reasonable and is beneficial to industrial production.
Detailed Description
The present invention is further illustrated by the following examples, which are not intended to limit the practice of the invention.
Example 1
The support bar material for the cold-shrink cable accessory is prepared from the following raw materials in parts by weight:
100 parts of homopolymerized polypropylene, 40 parts of copolymerized polypropylene, 30 parts of POE cold-resistant toughening agent, 1.5 parts of nucleating agent, 2.5 parts of antioxidant, 6 parts of compatilizer and 7 parts of EPDM.
The POE cold-resistant toughening agent is a high polymer of ethylene and butylene by adopting a metallocene catalyst.
The nucleating agent is an alpha crystal form nucleating agent.
The antioxidant is hydroquinone.
The compatilizer is a PP (polypropylene) blend grafted by maleic anhydride, and the molecular weight of the compatilizer is 4000-5000.
The preparation method of the support strip material for the cold-shrink cable accessory comprises the following steps:
physically mixing homo-polypropylene, co-polypropylene, POE cold-resistant toughening agent, nucleating agent, antioxidant, compatilizer and EPDM according to mass components, uniformly mixing, pouring the mixture into a feeding hopper of a double-screw extruder, controlling the screw speed of the double-screw extruder to be 262r/min and the temperature of a machine head to be 210 ℃, calendering the machine head by using two paired cylindrical dies, and cooling and shaping the plastic by using cooling water.
Example 2
The support bar material for the cold-shrink cable accessory is prepared from the following raw materials in parts by weight:
100 parts of homopolymerized polypropylene, 10 parts of copolymerized polypropylene, 10 parts of POE cold-resistant toughening agent, 3 parts of nucleating agent, 1 part of antioxidant, 10 parts of compatilizer and 10 parts of EPDM.
The POE cold-resistant toughening agent is a high polymer of ethylene and octene by adopting a metallocene catalyst.
The nucleating agent is a beta-crystal form nucleating agent.
The antioxidant is thiobisphenol.
The compatilizer is a PP (polypropylene) blend grafted by maleic anhydride, and the molecular weight of the compatilizer is 4000-5000.
The preparation method of the support strip material for the cold-shrink cable accessory comprises the following steps:
physically mixing homo-polypropylene, co-polypropylene, POE cold-resistant toughening agent, nucleating agent, antioxidant, compatilizer and EPDM according to mass components, uniformly mixing, pouring the mixture into a feeding hopper of a double-screw extruder, controlling the screw speed of the double-screw extruder to be 230r/min and the temperature of a machine head to be 205 ℃, calendering the machine head by using two paired cylindrical dies, and cooling and shaping the plastic by using cooling water.
Example 3
The support bar material for the cold-shrink cable accessory is prepared from the following raw materials in parts by weight:
100 parts of homopolymerized polypropylene, 50 parts of copolymerized polypropylene, 50 parts of POE cold-resistant toughening agent, 1 part of nucleating agent, 3 parts of antioxidant, 8 parts of compatilizer and 3 parts of EPDM.
The POE cold-resistant toughening agent is a high polymer of ethylene and octene by adopting a metallocene catalyst.
The nucleating agent is a mixture of an alpha crystal form nucleating agent and a beta crystal form nucleating agent, and the mixing ratio is 1: 1.
The antioxidant is p-phenylenediamine.
The compatilizer is a PP (polypropylene) blend grafted by maleic anhydride, and the molecular weight of the compatilizer is 4000-5000.
The preparation method of the support strip material for the cold-shrink cable accessory comprises the following steps:
physically mixing homo-polypropylene, co-polypropylene, POE cold-resistant toughening agent, nucleating agent, antioxidant, compatilizer and EPDM according to mass components, uniformly mixing, pouring the mixture into a feeding hopper of a double-screw extruder, controlling the screw speed of the double-screw extruder to be 270r/min and the temperature of a machine head to be 215 ℃, calendering the machine head by using two paired cylindrical dies, and cooling and shaping the plastic by using cooling water.
Comparative example 1
The support bar material for the cold-shrink cable accessory is prepared from the following raw materials in parts by weight:
100 parts of homopolymerized polypropylene, 50 parts of copolymerized polypropylene, 1 part of nucleating agent, 3 parts of antioxidant, 8 parts of compatilizer and 3 parts of EPDM, and POE cold-resistant toughening agent is not added.
The nucleating agent is a mixture of an alpha crystal form nucleating agent and a beta crystal form nucleating agent, and the mixing ratio is 1: 1.
The antioxidant is p-phenylenediamine.
The compatilizer is a PP (polypropylene) blend grafted by maleic anhydride, and the molecular weight of the compatilizer is 4000-5000.
The preparation method of the support strip material for the cold-shrink cable accessory comprises the following steps:
physically mixing homo-polypropylene, co-polypropylene, nucleating agent, antioxidant, compatilizer and EPDM according to mass components, uniformly mixing, pouring the mixture into a feeding hopper of a double-screw extruder, controlling the screw speed of the double-screw extruder to be 230r/min and the temperature of a machine head to be 205 ℃, rolling the machine head by using two paired cylindrical dies, and cooling and shaping the plastic by using cooling water.
Comparative example 2
The support bar material for the cold-shrink cable accessory is prepared from the following raw materials in parts by weight:
100 parts of homopolymerized polypropylene, 50 parts of copolymerized polypropylene, 50 parts of POE cold-resistant toughening agent, 3 parts of antioxidant, 8 parts of compatilizer and 3 parts of EPDM, and no nucleating agent is added.
The POE cold-resistant toughening agent is a high polymer of ethylene and octene by adopting a metallocene catalyst.
The antioxidant is p-phenylenediamine.
The compatilizer is a PP (polypropylene) blend grafted by maleic anhydride, and the molecular weight of the compatilizer is 4000-5000.
The preparation method of the support strip material for the cold-shrink cable accessory comprises the following steps:
physically mixing homo-polypropylene, co-polypropylene, POE cold-resistant toughening agent, antioxidant, compatilizer and EPDM according to mass components, uniformly mixing, pouring the mixture into a feeding hopper of a double-screw extruder, controlling the screw speed of the double-screw extruder to be 270r/min and the temperature of a machine head to be 215 ℃, calendering the machine head by using two paired cylindrical dies, and cooling and shaping the plastic by using cooling water.
The products prepared in examples 1-3 and comparative examples 1-2 were tested for their correlation properties and the results are shown in Table 1.
TABLE 1
Claims (9)
1. The utility model provides a support strip material for shrinkage cable accessories which characterized in that: the composite material comprises the following raw materials in parts by weight:
2. the support strip material for cold-shrink cable accessories as claimed in claim 1, wherein: the melt flow rate of the homopolymerized polypropylene is 2.0-4.0 g/min.
3. The support strip material for cold-shrink cable accessories as claimed in claim 1, wherein: the melt flow rate of the co-polypropylene was 9. + -.4 g/10 min.
4. The support strip material for cold-shrink cable accessories as claimed in claim 1, wherein: the POE cold-resistant toughening agent is at least one of high polymer of ethylene and butylene or high polymer of ethylene and octene by adopting a metallocene catalyst.
5. The support strip material for cold-shrink cable accessories as claimed in claim 1, wherein: the nucleating agent is one or two of alpha crystal form nucleating agent or beta crystal form nucleating agent.
6. The support strip material for cold-shrink cable accessories as claimed in claim 1, wherein: the antioxidant is phenol or amine.
7. The support strip material for cold-shrink cable accessories as claimed in claim 1, wherein: the compatibilizer is a maleic anhydride grafted PP blend.
8. The support strip material for cold-shrink cable accessories as claimed in claim 1, wherein: the Mooney viscosity of the ethylene propylene diene monomer is 30-120 ML (1+4)100 ℃.
9. A method for producing the support strip material for cold-shrink cable accessories as set forth in any one of claims 1 to 8, characterized in that: the method comprises the following steps:
(1) physically mixing homo-polypropylene, co-polypropylene, POE cold-resistant toughening agent, nucleating agent, antioxidant, compatilizer and ethylene propylene diene monomer rubber according to a formula;
(2) and pouring the mixture into a feeding hopper of a double-screw extruder, controlling the screw speed of the double-screw extruder to be 230-270 r/min and the temperature of a machine head to be 205-215 ℃, rolling the machine head by using two paired cylindrical dies, and cooling and shaping the plastic by using cooling water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010439662.4A CN111647225A (en) | 2020-05-22 | 2020-05-22 | Support strip material for cold-contraction cable accessory and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010439662.4A CN111647225A (en) | 2020-05-22 | 2020-05-22 | Support strip material for cold-contraction cable accessory and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111647225A true CN111647225A (en) | 2020-09-11 |
Family
ID=72342710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010439662.4A Withdrawn CN111647225A (en) | 2020-05-22 | 2020-05-22 | Support strip material for cold-contraction cable accessory and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111647225A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112094459A (en) * | 2020-09-30 | 2020-12-18 | 深圳市鑫鹏宇塑胶有限公司 | Low-temperature-resistant reinforced PP composite material and preparation method thereof |
| CN112143116A (en) * | 2020-09-27 | 2020-12-29 | 上海金发科技发展有限公司 | Polypropylene composite material with consistent crystallinity of skin layer and core layer and preparation method thereof |
| CN112662055A (en) * | 2020-12-10 | 2021-04-16 | 南京大学 | Modified polypropylene material for composite insulator |
-
2020
- 2020-05-22 CN CN202010439662.4A patent/CN111647225A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112143116A (en) * | 2020-09-27 | 2020-12-29 | 上海金发科技发展有限公司 | Polypropylene composite material with consistent crystallinity of skin layer and core layer and preparation method thereof |
| CN112094459A (en) * | 2020-09-30 | 2020-12-18 | 深圳市鑫鹏宇塑胶有限公司 | Low-temperature-resistant reinforced PP composite material and preparation method thereof |
| CN112662055A (en) * | 2020-12-10 | 2021-04-16 | 南京大学 | Modified polypropylene material for composite insulator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111647225A (en) | Support strip material for cold-contraction cable accessory and preparation method thereof | |
| CN104072881B (en) | A kind of thermoplasticity fretting map vibration-absorptive material and preparation method thereof | |
| CN102675734B (en) | Glass fiber-reinforced polypropylene foaming material and preparation method and application thereof | |
| CN103756179A (en) | Foamed plastic for making highway stand column and preparation method thereof | |
| CN107286475B (en) | Polypropylene foam material and preparation method thereof | |
| CN108976589B (en) | Polypropylene toughening master batch and preparation method thereof | |
| CN110591309B (en) | Biodegradable foamed plastic composite material and preparation method and application thereof | |
| CN113087973A (en) | Biodegradable high-temperature-resistant disposable tableware and preparation method thereof | |
| CN112940468B (en) | Polylactic acid-based foamed particles and preparation method thereof | |
| CN107739482B (en) | High-performance polyvinyl chloride pipe and preparation method thereof based on graphene | |
| CN1995124A (en) | High tenacious polypropylene material for manufacturing central conditioner air-discharge hose and its preparation method | |
| CN105670137A (en) | Polybutylene foam material and preparing method thereof | |
| CN116970175A (en) | Flame retardant and preparation method of high-modulus flame-retardant modified polypropylene using same | |
| CN111393812A (en) | P L A/EVA supercritical foaming composite material and preparation method thereof | |
| CN103224668B (en) | A kind of polypropylene-base bamboo moulds the preparation method of foam composite material | |
| CN111286177A (en) | PLA/PA supercritical foaming composite material and preparation method thereof | |
| CN115232396A (en) | Polypropylene composite material, automobile air pipe and preparation method thereof | |
| CN112280185A (en) | Degradable plastic uptake sheet and preparation method thereof | |
| CN112175272A (en) | Outdoor plastic-wood floor with high dimensional stability in high-temperature environment | |
| CN109694535B (en) | Engineering plastic alloy composite building template and preparation method thereof | |
| CN114426770B (en) | Microporous foaming long carbon fiber reinforced PA11 material | |
| CN109762229B (en) | Irradiation crosslinking polyethylene foam material and preparation method thereof | |
| CN116285054B (en) | Polyethylene pipe for water supply and preparation method thereof | |
| CN112920513B (en) | Low-temperature high-impact PPR pipe and preparation method and application thereof | |
| CN116656065B (en) | Impact-resistant PVC (polyvinyl chloride) pipe and production process thereof |
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 | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200911 |
|
| WW01 | Invention patent application withdrawn after publication |