CN110041625A - A kind of ship shore electric cable insulation composite material and preparation method - Google Patents
A kind of ship shore electric cable insulation composite material and preparation method Download PDFInfo
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- CN110041625A CN110041625A CN201910335115.9A CN201910335115A CN110041625A CN 110041625 A CN110041625 A CN 110041625A CN 201910335115 A CN201910335115 A CN 201910335115A CN 110041625 A CN110041625 A CN 110041625A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
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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
- C08L23/16—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
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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
- H01B3/28—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances natural or synthetic rubbers
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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
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
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- C08K2201/011—Nanostructured additives
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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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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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/22—Halogen free composition
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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
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- 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)
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08L2312/00—Crosslinking
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Abstract
The invention discloses a kind of ship shore electric cable insulation composite material and preparation methods, wherein each material composition and its mass fraction are as follows: 50-90 parts of ethylene propylene diene rubber (EPDM), 10-50 parts of low density polyethylene (LDPE) (LDPE), 1-5 parts of nano zine oxide, 0.2-1 parts of thiofide, 0.2-1 parts of rubber antioxidant, 0.1-0.5 parts of crosslinking agent, 6-30 parts of reinforcing agent, 0.5-5 parts of vulcanizing agent, 20 parts of white oil.Preparation method includes: first to be uniformly mixed feed components at normal temperature, and the raw material melt blending that secondly will be mixed is put into vulcanizing press the pressurized treatments that heat up after cooling, obtains ship shore electric cable insulation composite material.The cable that the present invention produces not only significantly improves mechanical strength, tensile strength, toughness with insulating layer material, while also having good electrical insulation capability.
Description
Technical field
The present invention relates to insulating material for cable, espespecially a kind of ship shore electric cable insulation composite material and its preparation side
Method.
Background technique
As the cry of low-carbon emission reduction is higher and higher, gradually it has been eliminated using the traditional approach of heavy oil or diesel generation,
Bank electricity, which is provided, to berthing large ship by harbour has become a kind of trend.Shore connection cable electric property used at present, machine
Tool performance and salt spray resistance etc. are difficult to reach requirement.Ethylene propylene diene rubber (EPDM) is because having water-fast, ageing-resistant, resistance toization
The excellent properties such as product corrosion and electric insulation are widely used in the industries such as wire and cable.However, due to the machinery of pure EPDM
Poor (the tensile strength 7M/mm of performance2), electric property general (breakdown voltage 30-40MV/m), curingprocess rate it is slow and expensive
Etc. disadvantages, cannot be directly used to engineering cable Insulation Material, therefore the shore connection cable material for developing a kind of halogen-free flame retardant insulation becomes
Vital project.
Summary of the invention
In order to solve the above-mentioned technical problems, the present invention provides a kind of ship shore electric cable insulation composite material and its
Preparation method, preparation method of the present invention is simple, and rationally, physical mechanical property and electric insulating quality mention constitutive material formula significantly
Height can overcome the defects of cable is in use due to mechanical performance decline with the shortening of cable life.
It is described the present invention provides a kind of ship shore electric cable insulation composite material in order to reach the object of the invention
The raw material of insulating layer composite material includes following component in parts by mass: 10-50 parts of low density polyethylene (LDPE), ethylene propylene diene rubber
50-90 parts, 1-5 parts of nano zine oxide, 0.2-1 parts of thiofide, 0.2-1 parts of rubber antioxidant, crosslinking agent 0.1-0.5
Part, 6-30 parts of reinforcing agent, 0.5-5 parts of vulcanizing agent, 10-25 parts of white oil.
Optionally, the raw material of insulating layer composite material is only made of above-mentioned material.
In ship shore electric cable insulation composite material provided by the invention, the original of the insulating layer composite material
Expect that component and mass parts are as follows: 10 parts of low density polyethylene (LDPE), 90 parts of ethylene propylene diene rubber, 3 parts of nano zine oxide, the vulcanization of rubber promote
Into 0.6 part of agent, 0.6 part of rubber antioxidant, 0.3 part of crosslinking agent, 18 parts of reinforcing agent and 2.7 parts of vulcanizing agent, 19 parts of white oil；
Or, the raw material components and mass parts of the insulating layer composite material are as follows: 30 parts of low density polyethylene (LDPE), ternary second
Third 70 parts of rubber, 3 parts of nano zine oxide, 0.6 part of thiofide, 0.6 part of rubber antioxidant, 0.3 part of crosslinking agent, enhancing
18 parts of agent and 2.7 parts of vulcanizing agent, 20 parts of white oil；
Or, the raw material components and mass parts of the insulating layer composite material are as follows: 50 parts of low density polyethylene (LDPE), ternary second
Third 50 parts of rubber, 3 parts of nano zine oxide, 0.6 part of thiofide, 0.6 part of rubber antioxidant, 0.3 part of crosslinking agent, enhancing
18 parts of agent and 2.7 parts of vulcanizing agent, 22 parts of white oil；
Or, the raw material components and mass parts of the insulating layer composite material are as follows: 35 parts of low density polyethylene (LDPE), ternary second
Third 65 parts of rubber, 3 parts of nano zine oxide, 1 part of thiofide, 0.6 part of rubber antioxidant, 0.3 part of crosslinking agent, reinforcing agent
30 parts and 2.7 parts of vulcanizing agent, 20 parts of white oil.
In ship shore electric cable insulation composite material provided by the invention, the rubber antioxidant is selected from 2- mercaptan
One or both of base benzimidazole and four [β-(3,5- di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol esters.
In ship shore electric cable insulation composite material provided by the invention, the crosslinking agent is selected from isocyanuric acid three
One or both of allyl ester and trimethylol-propane trimethacrylate.
In ship shore electric cable insulation composite material provided by the invention, the reinforcing agent is selected from gas phase hard charcoal
It is black；The thiofide is stearic acid；The vulcanizing agent is selected from one of cumyl peroxide and sulphur powder or two
Kind.
In ship shore electric cable insulation composite material provided by the invention, the partial size of the nano zine oxide is
50±10nm。
On the other hand, the present invention provides a kind of preparation method of above-mentioned ship shore electric cable insulation composite material,
The following steps are included:
(1) feed components are weighed by the parts by weight of formula components, feed components is uniformly mixed at normal temperature, then
By the raw material mixed under air-proof condition melt blending；After the torque of material reaches balance, gained eutectic is taken out, is taken
Natural cooling after out；
(2) then, mixture made from step (1) is put into mold, is then placed in plate sulphur together with mold
In change machine, 3-5min is first preheated at 3-5MPa, is forced into 5-10MPa, pressure release after pressure maintaining；
(3) continue the pressure maintaining in vulcanizing press, after pressure maintaining temperature is stablized, let out after 10-15MPa pressure maintaining 2-10min
Pressure takes out mold, is placed in cold press, takes out after being cold-pressed 5-10min at 5-10MPa, obtains ship shore electric cable insulation
Layer uses composite material.
Optionally, the preparation method of the ship shore electric cable insulation composite material is made of above-mentioned steps.
In preparation method of the ship shore electric cable provided by the invention with EPDM insulating layer material, described in step (1)
The temperature of melt blending is 80-110 DEG C, with 40-70r/min revolving speed melt blending 5-25min.
In preparation method of the ship shore electric cable provided by the invention with EPDM insulating layer material, described in step (2)
Vulcanizing press temperature is 165-175 DEG C；Step (2) circulation 2 times or more.
It is described in step (3) in preparation method of the ship shore electric cable provided by the invention with EPDM insulating layer material
Pressure maintaining temperature is 145-175 DEG C.
Beneficial effects of the present invention:
Nano zine oxide, stearic acid, white carbon black etc. are filled in thermoplasticity EPDM/LDPE by melt blending by the present invention
In, modified thermoplastics composite material sample is made, the intrinsic characteristic of EPDM is not only still retained in performance, but also has significant
The injection of thermoplastic, extrusion, the processing performance of blow molding and calendering formation, performance controllably enhances under the action of filler.
The present invention, which provides the insulating layer that EPDM is constituted, makes shore connection cable for ship have the effect of halogen-free flame retardant insulation, while having good
Mechanical strength, wearability, tensile strength, toughness, and waterproof performance, heat-resisting and anti-aging property are superior, environment friendly and pollution-free, warp
It is durable long, fully meet the requirement of shore connection cable.It is upper vdiverse in function, applied widely in production, there is power transmission, communication etc.
Multi-functional, multi-field purposes.
Other features and advantages of the present invention will be illustrated in the following description, also, partly becomes from specification
It obtains it is clear that understand through the implementation of the invention.The objectives and other advantages of the invention can be by specification, right
Specifically noted structure is achieved and obtained in claim and attached drawing.
Detailed description of the invention
Attached drawing is used to provide to further understand technical solution of the present invention, and constitutes part of specification, with this
The embodiment of application technical solution for explaining the present invention together, does not constitute the limitation to technical solution of the present invention.
Fig. 1 is rubber composite material tensile strength comparison diagram obtained in embodiment and comparative example；
Fig. 2 is rubber composite material breakdown strength Weibull distribution figure obtained in embodiment and comparative example；
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing to the present invention
Embodiment be described in detail.It should be noted that in the absence of conflict, in the embodiment and embodiment in the application
Feature can mutual any combination.
In embodiments of the present invention, a kind of ship shore electric cable insulation composite material is provided, wherein the insulation
The raw material components and mass parts of layer composite material are as follows: 10-50 parts of low density polyethylene (LDPE), is received 50-90 parts of ethylene propylene diene rubber
Rice 1-5 parts of zinc oxide, 0.2-1 parts of thiofide, 0.2-1 parts of rubber antioxidant, 0.1-0.5 parts of crosslinking agent, reinforcing agent
6-30 parts, 0.5-5 parts of vulcanizing agent, 10-25 parts of white oil.
In embodiments of the present invention, the raw material components of the insulating layer composite material and mass parts are as follows: low-density is poly-
35 parts of ethylene, 65 parts of ethylene propylene diene rubber, 3 parts of nano zine oxide, 0.6 part of thiofide, 0.6 part of rubber antioxidant,
0.3 part of crosslinking agent, 18 parts of reinforcing agent and 2.7 parts of vulcanizing agent, 20 parts of white oil.
In embodiments of the present invention, the rubber antioxidant is selected from 2 mercapto benzimidazole and four [β-(3,5- bis- tertiary fourths
One or both of base -4- hydroxy phenyl) propionic acid] pentaerythritol ester.
In embodiments of the present invention, the crosslinking agent is selected from triallyl isocyanurate and trimethylol propane trimethyl third
One or both of olefin(e) acid ester.
In embodiments of the present invention, the reinforcing agent is selected from gas-phase silica；The thiofide is stearic acid；
The vulcanizing agent is selected from one or both of cumyl peroxide and sulphur powder.
In embodiments of the present invention, the partial size of the nano zine oxide is 50 ± 10nm.
In embodiments of the present invention, the raw material parameter used is as follows: low density polyethylene (LDPE) 1C7A, is purchased from Yanshan Petrochemical；Three
First EP rubbers 4570H is purchased from Dow；Nano zine oxide, 50 ± 10nm of partial size are purchased from Aladdin reagent；It analyzes pure hard
Resin acid；2-mercaptobenzimidazole, analysis is pure, is purchased from Aladdin reagent；Four [β-(3,5- di-tert-butyl-hydroxy phenyl) propionic acid]
Pentaerythritol ester (antioxidant 1010), analysis is pure, is purchased from Aladdin reagent；Triallyl isocyanurate (TAIC), 98%, contain
500ppm BHT stabilizer is purchased from Aladdin reagent；White carbon black, HN-200, Jiangsu Hao Neng Chemical Co., Ltd.；Sulphur powder, CP >
99.5%, Aladdin reagent；Cumyl peroxide (DCP), CP > 98%, Jiangsu Dao Ming Chemical Co., Ltd.；White oil is purchased from
The pool profit energy.
Composite material test method is as follows in specific embodiment:
Stress and strain: according to 8815 standard testing of GB/T
Breakdown strength: according to GB/T 1408.1-2006 standard testing, thickness of sample is 1mm ± 0.1mm.According to
Weibull distributed data processing method is mapped, as shown in Figure 2 after the data obtained processing.
Dielectric constant: the small pieces that diameter is 1cm2 are made in sample, its tow sides are coated into silver electrode, at normal temperature frequency
Rate, which is that the range under 102Hz-106Hz is interior, tests material using impedance analyzer (ESPEC CORP SU-261).
The measurement of volume resistivity: according to GB/T 1408.1-2006 standard testing, thickness of sample is 2mm ± 0.1mm, is surveyed
Examination voltage is 100V.
Embodiment 1
Ship shore electric cable EPDM insulating layer material, each ingredient and its mass fraction in raw material are as follows:
10 parts of low density polyethylene (LDPE), 90 parts of ethylene propylene diene rubber, 3 parts of nano zine oxide, 0.6 part of stearic acid, 2- sulfydryl benzene
And 0.6 part of imidazoles, 0.3 part of triallyl isocyanurate TAIC, 18 parts of white carbon black, 0.6 part of sulphur powder, cumyl peroxide DCP
2.1 parts, 19 parts of white oil.The partial size of the nano zine oxide is 50 ± 10nm；
Specific preparation manipulation is as follows:
(1) raw material is weighed by the parts by weight of formula components, whole raw materials is uniformly mixed, then rheometer temperature is risen to
100 DEG C, revolving speed 60r/min, are then added the raw material mixed, with mixing tank for coating colors is sealed, melt material in slot is blended
Melt and 10min is blended；
(2) EPDM/LDPE composite material is obtained after the torque of material in rheometer reaches equilibrium valve, by EPDM/LDPE
Composite material natural cooling after being taken out in rheometer；
(3) then, obtained EPDM/LDPE composite material is placed in mold, then passes to each layer temperature and reaches
In 170 DEG C of vulcanizing press, 5min is first preheated at 5MPa, is slowly forced into 10Mpa, pressure release after of short duration pressure maintaining, this process
Circulation 3 times.After circulation when temperature is stablized at 170 DEG C, mold is taken out in the pressure release after 15MPa, pressure maintaining 2min, when room temperature
It takes out after being cold-pressed 5min under 8Mpa to get ship shore electric cable EPDM insulating layer material, pack sealing label is standby to be surveyed.
The main performance index for the Insulation Material that embodiment 1 is produced is as shown in table 1:
Table 1: the main performance index statistical form of EPDM/LDPE Insulation Material in embodiment 1
| Serial number | Performance project | Unit | Performance parameter |
| 1 | Stress | N/mm2 | 15 |
| 2 | Strain | % | 1030 |
| 3 | Breakdown strength | MV/m | 21 |
| 4 | Volume resistivity | Ω·cm-1 | 1010 |
| 5 | Dielectric constant (1000HZ) | — | 3.8 |
Embodiment 2:
Ship shore electric cable EPDM insulating layer material, wherein each ingredient and its mass fraction are as follows:
30 parts of low density polyethylene (LDPE), 70 parts of ethylene propylene diene rubber, 3 parts of nano zine oxide, 0.6 part of stearic acid, 2- mercapto
0.6 part of benzimidazole, 0.3 part of triallyl isocyanurate TAIC, 18 parts of white carbon black, 0.6 part of sulphur powder, 2.1 parts of DCP, white oil
20 parts.The partial size of the nano zine oxide is 50 ± 10nm；
Specific preparation manipulation is as follows:
(1) raw material is weighed by the parts by weight of formula components, whole raw materials is uniformly mixed, then rheometer temperature is risen to
100 DEG C, revolving speed 60r/min, are then added the raw material mixed, with mixing tank for coating colors is sealed, melt material in slot is blended
Melt and 10min is blended；
(2) EPDM/LDPE composite material is obtained after the torque of material in rheometer reaches equilibrium valve, by EPDM/LDPE
Composite material natural cooling after being taken out in rheometer；
(3) then, obtained EPDM/LDPE composite material is placed among mold, then passes to each layer temperature and reaches
Into 170 DEG C of vulcanizing presses, 5min is first preheated at 5MPa, is slowly forced into 10MPa, pressure release after of short duration pressure maintaining, this mistake
Cheng Xunhuan 3 times.After circulation when temperature is stablized at 170 DEG C, after 15MPa, pressure maintaining 2min, mold is taken out, when room temperature, in 8Mpa
It is taken out after lower cold pressing 5min to get ship shore electric cable EPDM insulating layer material, pack sealing label is standby to be surveyed.
The main performance index for the Insulation Material that the present invention produces is as shown in table 2.
Table 2: the main performance index statistical form of EPDM/LDPE Insulation Material in embodiment 2
| Serial number | Performance project | Unit | Actual performance |
| 1 | Stress | N/mm2 | 25 |
| 2 | Strain | % | 1150 |
| 3 | Breakdown voltage | MV/m | 22 |
| 4 | Volume resistivity | Ω·cm-1 | 1012 |
| 5 | Dielectric constant | — | 2.9 |
Embodiment 3
Ship shore electric cable EPDM insulating layer material, wherein each ingredient and its mass fraction are as follows:
50 parts of low density polyethylene (LDPE), 50 parts of ethylene propylene diene rubber, 3 parts of nano zine oxide, 0.6 part of stearic acid, 2- mercapto
0.6 part of benzimidazole, 0.3 part of triallyl isocyanurate TAIC, 18 parts of white carbon black, 0.6 part of sulphur powder, 2.1 parts of DCP, white oil
22 parts, the partial size of the nano zine oxide be 50 ± 10nm；
Specific preparation manipulation is as follows:
(1) raw material is weighed by the parts by weight of formula components, whole raw materials is uniformly mixed, then rheometer temperature is risen to
100 DEG C, revolving speed 60r/min, are then added the raw material mixed, with mixing tank for coating colors is sealed, melt material in slot is blended
Melt and 10min is blended；
(2) EPDM/LDPE composite material is obtained after the torque of material in rheometer reaches equilibrium valve, by EPDM/LDPE
Composite material natural cooling after being taken out in rheometer；
(3) then, obtained EPDM/LDPE composite material is placed among mold, then passes to each layer temperature and reaches
Into 170 DEG C of vulcanizing presses, 5min is first preheated at 5MPa, is slowly forced into 10Mpa, pressure release after of short duration pressure maintaining, this mistake
Cheng Xunhuan 3 times.Mold is taken out after 15MPa, pressure maintaining 2min when temperature is stablized at 170 DEG C after circulation, when room temperature, in 8Mpa
It is taken out after lower cold pressing 5min to get ship shore electric cable EPDM insulating layer material, pack sealing label is standby to be surveyed.
The main performance index for the Insulation Material that the present invention produces is as shown in table 3.
Table 3: the main performance index statistical form of EPDM/LDPE Insulation Material in embodiment 3
| Serial number | Performance project | Unit | Performance parameter |
| 1 | Stress | N/mm2 | 21 |
| 2 | Strain | % | 1200 |
| 3 | Breakdown voltage | MV/m | 26 |
| 4 | Volume resistivity | Ω·cm-1 | 1013 |
| 5 | Dielectric constant | — | 2.7 |
Embodiment 4
35 parts of low density polyethylene (LDPE), 65 parts of ethylene propylene diene rubber, 3 parts of nano zine oxide, 1 part of stearic acid, 2- mercapto benzene
And 0.6 part of imidazoles, 0.3 part of triallyl isocyanurate TAIC, 30 parts of white carbon black, 0.6 part of sulphur powder, 2.1 parts of DCP, white oil 20
Part, the partial size of the nano zine oxide is 50 ± 10nm；
(1) raw material is weighed by the parts by weight of formula components, whole raw materials is uniformly mixed, then rheometer temperature is risen to
100 DEG C, revolving speed 60r/min, are then added the raw material mixed, with mixing tank for coating colors is sealed, melt material in slot is blended
Melt and 10min is blended；
(2) EPDM/LDPE composite material is obtained after the torque of material in rheometer reaches equilibrium valve, by EPDM/LDPE
Composite material natural cooling after being taken out in rheometer；
(3) then, obtained EPDM/LDPE composite material is placed among mold, then passes to each layer temperature and reaches
Into 170 DEG C of vulcanizing presses, 5min is first preheated under 5MPa, is slowly forced into 10Mpa, pressure release after of short duration pressure maintaining, this process
Circulation 3 times.Mold is taken out after 15MPa, pressure maintaining 2min when temperature is stablized at 170 DEG C after circulation, when room temperature is cold at 8Mpa
It takes out after pressing 5min to get ship shore electric cable EPDM insulating layer material, pack sealing label is standby to be surveyed.
The main performance index for the Insulation Material that the present invention produces is as shown in table 4.
Table 4: the main performance index statistical form of EPDM/LDPE Insulation Material in embodiment 4
Comparative example 1
The EPDM insulating layer material of comparative example, wherein each ingredient and its mass fraction are as follows:
It is 100 parts of ethylene propylene diene rubber, 3 parts of nano zine oxide, 0.6 part of stearic acid, 0.6 part of 2 mercapto benzimidazole, different
0.3 part of triallyl cyanurate TAIC, 18 parts of white carbon black, 0.6 part of sulphur powder, 2.1 parts of DCP, 15 parts of white oil, the nano oxygen
The partial size for changing zinc is 50 ± 10nm；
(1) raw material is weighed by the parts by weight of formula components, whole raw materials is uniformly mixed, then rheometer temperature is risen to
100 DEG C, revolving speed 60r/min, are then added the raw material mixed, with mixing tank for coating colors is sealed, melt material in slot is blended
Melt and 10min is blended；
(2) obtain EPDM composite material after the torque of material in rheometer reaches equilibrium valve, by EPDM composite material from
Natural cooling after being taken out in rheometer；
(3) then, claim for obtained EPDM composite material to be placed among mold, then pass to each layer temperature and reach
In 170 DEG C of vulcanizing press, 5min is first preheated at 5MPa, is slowly forced into 10Mpa, pressure release after of short duration pressure maintaining, this exhaust
Process recycles 3 times.When temperature is stablized at 170 DEG C, mold is taken out in pressure release after 15MPa, pressure maintaining 2min, when room temperature at 8Mpa
It is taken out after cold pressing 5min, pack sealing label is standby to be surveyed.
The main performance index for the Insulation Material that the present invention produces is as shown in table 5.
Table 5: the main performance index statistical form of product in comparative example 1
| Serial number | Performance project | Unit | Performance parameter |
| 1 | Stress | N/mm2 | 16 |
| 2 | Strain | % | 1050 |
| 3 | Breakdown voltage | MV/m | 17 |
| 4 | Volume resistivity | Ω·cm-1 | 1012 |
| 5 | Dielectric constant | — | 3.4 |
It has been proved by practice that present invention gained ship shore electric cable EPDM insulating layer Tensile Properties of Composites and it is electrical absolutely
Edge greatly improves, and the manufacture and use for novel shore connection cable provide possibility.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (10)
1. a kind of ship shore electric cable insulation composite material, wherein the raw material of the insulating layer composite material presses quality
Part meter includes following component: 10-50 parts of low density polyethylene (LDPE), 50-90 parts of ethylene propylene diene rubber, 1-5 parts of nano zine oxide, rubber
0.2-1 parts of vulcanization accelerator, 0.2-1 parts of rubber antioxidant, 0.1-0.5 parts of crosslinking agent, 6-30 parts of reinforcing agent, vulcanizing agent 0.5-5
Part, 10-25 parts of white oil.
2. ship shore electric cable insulation composite material according to claim 1, wherein the insulating layer composite wood
The raw material components and mass parts of material are as follows: 10 parts of low density polyethylene (LDPE), 90 parts of ethylene propylene diene rubber, 3 parts of nano zine oxide, rubber
0.6 part of vulcanization accelerator, 0.6 part of rubber antioxidant, 0.3 part of crosslinking agent, 18 parts of reinforcing agent and 2.7 parts of vulcanizing agent, white oil 19
Part；
Or, the raw material components and mass parts of the insulating layer composite material are as follows: 30 parts of low density polyethylene (LDPE), ethylene-propylene-diene monomer
70 parts of glue, 3 parts of nano zine oxide, 0.6 part of thiofide, 0.6 part of rubber antioxidant, 0.3 part of crosslinking agent, reinforcing agent 18
Part and 2.7 parts of vulcanizing agent, 20 parts of white oil；
Or, the raw material components and mass parts of the insulating layer composite material are as follows: 50 parts of low density polyethylene (LDPE), ethylene-propylene-diene monomer
50 parts of glue, 3 parts of nano zine oxide, 0.6 part of thiofide, 0.6 part of rubber antioxidant, 0.3 part of crosslinking agent, reinforcing agent 18
Part and 2.7 parts of vulcanizing agent, 22 parts of white oil；
Or, the raw material components and mass parts of the insulating layer composite material are as follows: 35 parts of low density polyethylene (LDPE), ethylene-propylene-diene monomer
65 parts of glue, 3 parts of nano zine oxide, 1 part of thiofide, 0.6 part of rubber antioxidant, 0.3 part of crosslinking agent, 30 parts of reinforcing agent
And 2.7 parts of vulcanizing agent, 20 parts of white oil.
3. ship shore electric cable insulation composite material according to claim 1, wherein the rubber antioxidant is selected from
One of 2 mercapto benzimidazole and four [β-(3,5- di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol esters or two
Kind.
4. ship shore electric cable insulation composite material according to claim 1, wherein the crosslinking agent is selected from isocyanide
One or both of urea acid triallyl and trimethylol-propane trimethacrylate.
5. ship shore electric cable insulation composite material according to any one of claim 1 to 4, wherein the increasing
Strong agent is selected from gas-phase silica；The thiofide is stearic acid；The vulcanizing agent be selected from cumyl peroxide and
One or both of sulphur powder.
6. ship shore electric cable insulation composite material according to any one of claim 1 to 4, wherein described
The partial size of nano zine oxide is 50 ± 10nm.
7. a kind of a kind of preparation side of ship shore electric cable insulation composite material described in any one of claims 1 to 6
Method, comprising the following steps:
(1) feed components are weighed by the parts by weight of formula components, feed components is uniformly mixed at normal temperature, then will mix
The raw material got togather melt blending under air-proof condition；After the torque of material reaches balance, gained eutectic is taken out, after taking-up
Natural cooling；
(2) then, mixture made from step (1) is put into mold, is then placed in vulcanizing press together with mold
In, 3-5min is first preheated at 3-5 MPa, is forced into 5-10MPa, pressure release after pressure maintaining；
(3) continue the pressure maintaining in vulcanizing press, after pressure maintaining temperature is stablized, pressure release is taken after 10-15 MPa pressure maintaining 2-10min
Mold out is placed in cold press, is taken out after being cold-pressed 5-10min at 5-10MPa, and ship shore electric cable insulation use is obtained
Composite material.
8. a kind of preparation method of ship shore electric cable insulation composite material according to claim 7, wherein step
(1) temperature of melt blending described in is 80-110 DEG C, with 40-70r/min revolving speed melt blending 5-25min.
9. a kind of preparation method of ship shore electric cable insulation composite material according to claim 7, wherein step
(2) vulcanizing press temperature described in is 165-175 DEG C；Step (2) circulation 2 times or more.
10. a kind of preparation method of ship shore electric cable insulation composite material according to claim 7, wherein step
Suddenly in (3), the pressure maintaining temperature is 145-175 DEG C.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910335115.9A CN110041625A (en) | 2019-04-24 | 2019-04-24 | A kind of ship shore electric cable insulation composite material and preparation method |
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| CN201910335115.9A CN110041625A (en) | 2019-04-24 | 2019-04-24 | A kind of ship shore electric cable insulation composite material and preparation method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110527201A (en) * | 2019-09-26 | 2019-12-03 | 西安科技大学 | Without sulphur environment-friendly type high intensity insulated cable material and preparation method thereof |
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Application publication date: 20190723 |