CN109456542A - A kind of rubber insulation material - Google Patents
A kind of rubber insulation material Download PDFInfo
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- CN109456542A CN109456542A CN201811150774.7A CN201811150774A CN109456542A CN 109456542 A CN109456542 A CN 109456542A CN 201811150774 A CN201811150774 A CN 201811150774A CN 109456542 A CN109456542 A CN 109456542A
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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
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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
- C08J2323/16—Ethene-propene or ethene-propene-diene copolymers
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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
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2491/00—Characterised by the use of oils, fats or waxes; Derivatives thereof
- C08J2491/06—Waxes
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- 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
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/02—Organic and inorganic ingredients
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- 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
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2217—Oxides; Hydroxides of metals of magnesium
- C08K2003/222—Magnesia, i.e. magnesium oxide
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- 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
- C08K3/34—Silicon-containing compounds
- C08K3/346—Clay
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- 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
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
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- 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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
- C08K5/098—Metal salts of carboxylic acids
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Abstract
The invention discloses a kind of rubber insulation materials, are related to a kind of rubber composition containing EPDM.The rubber insulation material is grouped as by the group of following parts by weight: 60-80 parts of EPDM, 40-20 parts of POE, 80-100 parts of calcinated argil, 5-15 parts of white carbon black, 1-3 parts of silane coupling agent, 0.5-2 parts of antioxidant, 4-8 parts of paraffin, 10-20 parts of softening agent, irradiation sensitizer 2-5 parts, 1-3 parts of calcium stearate, 2-6 parts of light magnesium oxide.Rubber components of the invention not only conform with the related electric property of cable insulation layer rubber and the standard of mechanical performance by the sizing material for being kneaded, obtaining after cross-linking radiation, and tensile strength is better than other cable rubber insulation materials；After in environment of the long-time in warm water or hot water, insulation electrical property is better than other similar cable rubber insulation materials, has stronger heat-resisting, water resistance.
Description
Technical field
The present invention relates to a kind of rubber compositions containing EPDM, and in particular to a kind of high insulation, heat-proof water, Halogen
Cross-linking radiation insulating materials.
Background technique
The insulating materials of the household electrical appliance wiring such as air-conditioning, refrigerator is many kinds of, respectively there is advantage and disadvantage, mainly have polyvinyl chloride,
Crosslinked polyethylene, silicon rubber, fluoroplastics and crosslinking EPDM.
Be crosslinked ethylene propylene diene rubber wire-insulating compound, be by ethylene, propylene, non-conjugated diene hydrocarbon terpolymer and
All kinds of compounding agents are crosslinked to obtain by chemistry or radiation mode, and with excellent weather-proof, resistance to ozone, heat-resisting, chemically-resistant is rotten
The performances such as erosion, water vapor resistance have utilization in fields such as refrigeration compressor lead, waterproof machine lead and electric appliance lines.
The crosslinking EPDM steam vulcanization (cure) rubber for being currently used for IEC60245 57 (YZW) insulation has the disadvantage that
(1) it is crosslinked in the molecular structure of ethylene propylene diene rubber and lacks active group, cohesive energy is low, and sizing material is easy to bloom, thus self-adhesion
Property and mutual viscosity are poor；(2) insulation resistance of crosslinking ethylene propylene diene rubber is after boiling test less than 500M Ω (boiling test: leaching
Water length 2500mm, 65 DEG C of water temperature, time 400h) or insulation resistance batch it is unstable；It is not able to satisfy the specific family of certain clients
Outside, the water of resistance to splashing requirement；(3) long-time outdoor application can reduce the insulation performance of cable, cause short-circuit tripping, and vulcanize
The use of agent will lead to cable and peculiar smell occurs.
Summary of the invention
In order to overcome the above deficiency of the prior art, the present invention provide a kind of high insulation, heat-proof water, Halogen cross-linking radiation
Insulating materials.
Rubber insulation material of the invention is grouped as by the group of following parts by weight:
60-80 parts of EPDM, 40-20 parts of POE, 80-100 parts of calcinated argil, 5-15 parts of white carbon black, silane coupling agent
1-3 parts, 0.5-2 parts of antioxidant, 4-8 parts of paraffin, 10-20 parts of softening agent, irradiation sensitizer 2-5 parts, 1-3 parts of calcium stearate,
2-6 parts of light magnesium oxide.
Preferably, the rubber insulation material is grouped as by the group of following parts by weight:
65 parts of EPDM, 35 parts of POE, 85 parts of calcinated argil, 5 parts of white carbon black, 2 parts of silane coupling agent, antioxidant
1.5 parts, 5 parts of paraffin, 15 parts of softening agent, irradiation 3 parts of sensitizer, 5 parts of calcium stearate, 5 parts of light magnesium oxide.
Rubber components of the invention include rubber system, reinforcing and filling system, vulcanizing system, softening system and protection body
It is close ties, interaction between the component of each system.
In rubber components of the invention, POE molecular structure is similar to ethylene propylene diene rubber, it may have ageing-resistant, resistance to ozone,
The excellent properties such as resistant to chemical media can promote rubber extruding efficiency.EPDM and POE cooperation constitute rubber system, with ternary
Second third is the main body of raw rubber, and supplemented by POE, the weight accounting of EPDM is about 1.5-4 times of POE, combines ternary second
The feature performance benefit of third and POE, complementary synergy.Irradiate the vulcanizing system that sensitizer is rubber material, effect of the raw rubber in radiation
Under by sensitizer cause be physical crosslinking, enhance the plasticity of rubber material, heat resisting temperature improve, permanent deformation reduce, stretch by force
The main mechanical properties such as degree, tearing strength all have significant improvement.
In rubber components of the invention, calcinated argil, white carbon black are filler, collectively form the reinforcement and filler of rubber material
System.Wherein, calcinated argil is extending fillers, can reduce the cost of rubber material, significantly improve rubber volume resistivity and
Hydrophobicity, white carbon black are reinforced filling, and rubber processing performance can be improved, improve physical property, but have negative effect to insulation electrical property.
The surface nature of clay powder can be changed in silane coupling agent, improves dispersibility, improves the friendship with rubber high-molecular organic material
Connection property, to enhance the physical mechanical properties such as the tensile strength of rubber product；Silane coupling agent can improve rubber macromolecule simultaneously
The hydrophobicity of material, to enhance the water resistance of rubber product.
Compared to modified clay and white carbon black is directly used, calcinated argil, white carbon black and silane coupling agent are matched as above-mentioned
It is more preferable to rubber electric property, the improvement of mechanical performance than being united and applied in raw rubber.Not only make the strong of rubber material
Degree, durability enhancing, cost reduces, and the protection body constituted in antioxidant, paraffin, calcium stearate, light magnesium oxide
Under the synergistic effect of system, the water imbibition of rubber material is reduced, and ozone resistance is promoted, and heat-resistant aging, water resistance further enhance,
Even if being still able to maintain higher insulating properties in 60 DEG C of hot and humid environment for a long time.
In rubber components of the invention, includes also the softening agent 10-20 parts of softening system as rubber material, can increase glue
The plasticity of material, mobility improve extrusion efficiency so as to extrusion molding；It additionally aids powdered compounding agent dispersion and reduces mixed
Refine temperature.
Further, the EPDM is Tao Shi 4770R or Tao Shi 3720P or Tao Shi 3722P or brocade lake KEP210；It is described
POE is Tao Shi 8150.
Further, the irradiation sensitizer is TAIC or TMPTMA.
Further, the softening agent is paraffin oil or naphthenic oil.
Further, the calcinated argil for -3000 mesh of 1500 mesh or passes through silane coupling agent surface modification treatment.
Further, the silane coupling agent is KH550 or KH330 or KH560.
By existing rubber material preparation process, rubber components of the invention through tabletting or are made after mixer mixing is uniform
Grain, produces finished product sizing material.
By cable made of rubber size of the invention, it is physical crosslinking under the radiation absorbed dose of 11-13Mrad,
Obtain cable finished product.
Rubber components of the invention not only conform with GB/T5013.4-2008 by the cable for being kneaded, obtaining after cross-linking radiation
The related electric property of middle electric wire insulation layer rubber and the standard of mechanical performance also have heat-resisting, water-fast and high insulation electrically
Energy.
Specific embodiment
Technical solution of the present invention is described in detail below in conjunction with embodiment.Following embodiment is only used for more
Technical solution of the present invention is clearly demonstrated, therefore is only used as example, and not intended to limit the protection scope of the present invention.
Embodiment 1
A kind of rubber insulation material, weight are as follows:
60 parts of EPDM, 40 parts of POE, 90 parts of calcinated argil, 5 parts of white carbon black, 2 parts of silane coupling agent, antioxidant
1.5 parts, 5 parts of paraffin, 15 parts of softening agent, irradiation 3 parts of sensitizer, 2.5 parts of calcium stearate, 3.5 parts of light magnesium oxide.Irradiation absorbs
Dosage 13Mrad.
Embodiment 2
A kind of rubber insulation material, weight are as follows:
60 parts of EPDM, 40 parts of POE, 80 parts of calcinated argil, 10 parts of white carbon black, 2 parts of silane coupling agent, antioxidant
1.5 parts, 5 parts of paraffin, 15 parts of softening agent, irradiation 3 parts of sensitizer, 2.5 parts of calcium stearate, 3 parts of light magnesium oxide.Radiation absorber
Measure 13Mrad.
Embodiment 3
A kind of rubber insulation material, weight are as follows:
60 parts of EPDM, 40 parts of POE, 80 parts of calcinated argil, 15 parts of white carbon black, 2 parts of silane coupling agent, antioxidant
1.5 parts, 5 parts of paraffin, 15 parts of softening agent, irradiation 3 parts of sensitizer, 3 parts of calcium stearate, 3 parts of light magnesium oxide.Radiation absorber amount
13Mrad。
Embodiment 4
A kind of rubber insulation material, weight are as follows:
65 parts of EPDM, 35 parts of POE, 85 parts of calcinated argil, 5 parts of white carbon black, 1 part of silane coupling agent, antioxidant
1.5 parts, 5 parts of paraffin, 15 parts of softening agent, irradiation 3 parts of sensitizer, 5 parts of calcium stearate, 5 parts of light magnesium oxide.Radiation absorber amount
12Mrad。
Embodiment 5
A kind of rubber insulation material, weight are as follows:
65 parts of EPDM, 35 parts of POE, 80 parts of calcinated argil, 15 parts of white carbon black, 1 part of silane coupling agent, antioxidant
1.5 parts, 5 parts of paraffin, 18 parts of softening agent, irradiation 3 parts of sensitizer, 2.5 parts of calcium stearate, 3 parts of light magnesium oxide.Radiation absorber
Measure 12Mrad.
Embodiment 6
A kind of rubber insulation material, weight are as follows:
65 parts of EPDM, 35 parts of POE, 80 parts of calcinated argil, 10 parts of white carbon black, 1 part of silane coupling agent, antioxidant
1.5 parts, 5 parts of paraffin, 18 parts of softening agent, irradiation 3 parts of sensitizer, 3 parts of calcium stearate, 2.5 parts of light magnesium oxide.Radiation absorber
Measure 12Mrad.
Embodiment 7
A kind of rubber insulation material, weight are as follows:
70 parts of EPDM, 30 parts of POE, 90 parts of calcinated argil, 5 parts of white carbon black, 1.6 parts of silane coupling agent, antioxidant
1.4 parts, 4 parts of paraffin, 16 parts of softening agent, irradiation 3 parts of sensitizer, 3 parts of calcium stearate, 4 parts of light magnesium oxide.Radiation absorber amount
12Mrad。
Embodiment 8
A kind of rubber insulation material, weight are as follows:
It is 70 parts of EPDM, 30 parts of POE, 85 parts of calcinated argil, 10 parts of white carbon black, 1.6 parts of silane coupling agent, anti-oxidant
1.5 parts of agent, 4 parts of paraffin, 15 parts of softening agent, irradiation 3 parts of sensitizer, 3 parts of calcium stearate, 4.5 parts of light magnesium oxide.Irradiation absorbs
Dosage 12Mrad.
Embodiment 9
A kind of rubber insulation material, weight are as follows:
It is 70 parts of EPDM, 30 parts of POE, 80 parts of calcinated argil, 15 parts of white carbon black, 1.6 parts of silane coupling agent, anti-oxidant
1.5 parts of agent, 4.8 parts of paraffin, 15 parts of softening agent, irradiation 3 parts of sensitizer, 3 parts of calcium stearate, 5 parts of light magnesium oxide.Irradiation absorbs
Dosage 12Mrad.
Embodiment 10
A kind of rubber insulation material, weight are as follows:
75 parts of EPDM, 25 parts of POE, 100 parts of calcinated argil, 5 parts of white carbon black, 2 parts of silane coupling agent, antioxidant 2
Part, 5 parts of paraffin, 19 parts of softening agent, irradiation 4 parts of sensitizer, 2 parts of calcium stearate, 5 parts of light magnesium oxide.Radiation absorber amount
12Mrad。
Embodiment 11
A kind of rubber insulation material, weight are as follows:
75 parts of EPDM, 25 parts of POE, 100 parts of calcinated argil, 10 parts of white carbon black, 3 parts of silane coupling agent, antioxidant
1 part, 6 parts of paraffin, 16 parts of softening agent, irradiation 4 parts of sensitizer, 2 parts of calcium stearate, 5 parts of light magnesium oxide.Radiation absorber amount
12Mrad。
Embodiment 12
A kind of rubber insulation material, weight are as follows:
75 parts of EPDM, 25 parts of POE, 90 parts of calcinated argil, 15 parts of white carbon black, 3 parts of silane coupling agent, antioxidant 1
Part, 5 parts of paraffin, 16 parts of softening agent, irradiation 4 parts of sensitizer, 1 part of calcium stearate, 5 parts of light magnesium oxide.Radiation absorber amount
12Mrad。
Performance test
Test sets 15 test groups altogether:
(1) rubber insulation material of 1-12 of the embodiment of the present invention)；
(2) control group 1
(4045) 70 parts of EPDM, 30 parts of CPE (135B), 35 parts of white carbon black, 100 parts of activated Calcium carbonate, peroxidating two
1 part of isopropylbenzene, 2 parts of silane coupling agent (A-172), 2 parts of cross-linking aid (TAIC), 5 parts of zinc oxide, 2 parts of zinc stearate, anti-aging agent
(124) 1.5 parts；2,280 15 parts of sun paraffin oil；Vapor sulfurizing process.
(3) control group 2
100 parts of EPDM (Tao Shi 3722P), 100 parts of activated Calcium carbonate, 35 parts of white carbon black, cumyl peroxide 1.5
Part, 2,280 15 parts of sun paraffin oil, 4,4 '-bis- 2 parts of (2,2- dimethyl benzyl) diphenylamines, 5 parts of zinc oxide, 5 parts of paraffin, two
1 part of methyl-silicone oil；Vapor sulfurizing process.
(4) control group 3
96 parts of EPDM (eni 4044), 4 parts of POE, 50 parts of 1500 mesh talcum powder, 90 parts of 1500 mesh calcium carbonate, hard charcoal
Black 35 parts, 5.6 parts of zinc oxide, 0.1 part of stearic acid, 2 parts of anti-aging agent RD, 2,280 20 parts of paraffin oil, 2 parts of BIBP, TAIC 2.7
Part, 1.0 parts of silane coupling agent (A-172), 4 parts of paraffin.Vapor sulfurizing process.
Test item and method
(1) electrical performance test
The test method of insulation resistance are as follows: electric wire made of sizing material interception 2.5m of the invention, by its hot water at 65 DEG C
In (reveal end to end respectively go out water surface 100-150mm) taken out after continuous dipping 400 hours, in room temperature cold water after cooling 30min, use
Insulation resistance instrument measures (test voltage DC 500V), and measurement is read after 1min；Voltage test, experimental condition are carried out after test
Are as follows: voltage AC 2500V, time 5min, test electric leakage restriction value 5mA.Or boiling 3 × 8 hours in 100 DEG C of water, 100
Insulation resistance is measured in DEG C boiling water, measurement is read after 1min.
(2) mechanical test
Test method are as follows: carried out by GB/T 5013.2-2008, test tensile strength, the elongation at break of each test group.
Test result
Upper table shows that rubber material of the invention meets the related of electric wire insulation layer rubber in GB/T 5013.4-2008
The standard of electric property and mechanical performance meets IE4 type insulation non-electrical properties requirement in GB/T 5013.1-2008 table 3, resists
Tensile strength is better than other cable rubber insulation materials；In environment of the long-time in warm water or hot water, insulating properties is better than
Other cable rubber insulation materials have stronger heat-resisting, water resistance.
Claims (7)
1. a kind of rubber insulation material, it is characterised in that: be grouped as by the group of following parts by weight:
60-80 parts of EPDM, 40-20 parts of POE, 80-100 parts of calcinated argil, 5-15 parts of white carbon black, silane coupling agent 1-3
Part, 0.5-2 parts of antioxidant, 4-8 parts of paraffin, 10-20 parts of softening agent, irradiation sensitizer 2-5 parts, 1-3 parts of calcium stearate, lightweight
2-6 parts of magnesia.
2. a kind of rubber insulation material according to claim 1, it is characterised in that: be grouped as by the group of following parts by weight:
65 parts of EPDM, 35 parts of POE, 85 parts of calcinated argil, 5 parts of white carbon black, 2 parts of silane coupling agent, 1.5 parts of antioxidant,
5 parts of paraffin, 15 parts of softening agent, irradiation 3 parts of sensitizer, 5 parts of calcium stearate, 5 parts of light magnesium oxide.
3. a kind of rubber insulation material according to claim 1, it is characterised in that: the EPDM is Tao Shi 4770R
Or Tao Shi 3720P or Tao Shi 3722P or brocade lake KEP210；The POE is Tao Shi 8150.
4. a kind of rubber insulation material according to claim 1, it is characterised in that: the calcinated argil is 1500-3000
Mesh passes through silane coupling agent surface modification treatment.
5. a kind of rubber insulation material according to claim 1-4, it is characterised in that: the irradiation sensitizer is
TAIC or TMPTMA.
6. a kind of rubber insulation material according to claim 5, it is characterised in that: the silane coupling agent be KH550 or
KH330 or KH560.
7. a kind of rubber insulation material according to claim 6, it is characterised in that: the softening agent is paraffin oil or cycloalkanes
Oil.
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| CN201811150774.7A CN109456542A (en) | 2018-09-29 | 2018-09-29 | A kind of rubber insulation material |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111607165A (en) * | 2020-06-24 | 2020-09-01 | 长缆电工科技股份有限公司 | High-expansion insulating ethylene-propylene rubber cold-contraction material, and preparation method and application thereof |
| CN112029201A (en) * | 2020-09-08 | 2020-12-04 | 瑞安复合材料(深圳)有限公司 | Chemical corrosion resistant insulating material and preparation method thereof |
| CN112063061A (en) * | 2020-09-22 | 2020-12-11 | 兖矿集团有限公司 | Insulating material and preparation method thereof |
| CN112126162A (en) * | 2020-09-24 | 2020-12-25 | 镇江市华银仪表电器有限公司 | Wear-resistant rubber cable material |
| CN114516990A (en) * | 2022-03-16 | 2022-05-20 | 重庆泰山电缆有限公司 | Ethylene propylene diene monomer insulating material with high mechanical property and preparation method thereof |
| CN115418056A (en) * | 2022-06-15 | 2022-12-02 | 特变电工山东鲁能泰山电缆有限公司 | High-temperature-resistant high-strength ethylene propylene rubber insulating rubber for wires and cables and preparation method thereof |
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| CN102977465A (en) * | 2012-11-05 | 2013-03-20 | 安徽金桥电缆有限公司 | Irradiation crosslinking flame-retardant cable material and its preparation method |
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Application publication date: 20190312 |