CN104151720A - Terpolymer EP rubber insulation formula and preparation method thereof - Google Patents
Terpolymer EP rubber insulation formula and preparation method thereof Download PDFInfo
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- CN104151720A CN104151720A CN201410410847.7A CN201410410847A CN104151720A CN 104151720 A CN104151720 A CN 104151720A CN 201410410847 A CN201410410847 A CN 201410410847A CN 104151720 A CN104151720 A CN 104151720A
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/002—Methods
- B29B7/005—Methods for mixing in batches
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
- B29B7/22—Component parts, details or accessories; Auxiliary operations
- B29B7/28—Component parts, details or accessories; Auxiliary operations for measuring, controlling or regulating, e.g. viscosity control
- B29B7/286—Component parts, details or accessories; Auxiliary operations for measuring, controlling or regulating, e.g. viscosity control measuring properties of the mixture, e.g. temperature, density
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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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/22—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length
- B29C43/24—Calendering
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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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/22—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length
- B29C43/24—Calendering
- B29C43/245—Adjusting calender parameters, e.g. bank quantity
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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
- 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
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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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
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- Polymers & Plastics (AREA)
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Abstract
The invention relates to a terpolymer EP rubber insulation formula and a preparation method, the rubber insulation composition comprises the following components by weight: 15-30 parts of terpolymer EP rubber, 11-25 parts of ethylene-propylene methylene copolymer, 2.0-3.5 parts of zinc oxide, 1.2-2.5 parts of 2-mercapto benzimidazole, 0.6-1.5 parts of zine stearate, 1.3-2.8 parts of P-60T, 0.4-1.6 parts of vinyl trisilane, 1.6-3.0 parts of paraffin oil, 1.3-2.6 parts of polyethylene wax, 1.1-2.6 parts of triallyl poly isocyanate, 1.2-2.8 parts of dicumyl peroxide, 18-25 parts of powdered steatile and 14-25 parts of calcining potter's clay. The concrete technology comprises the following steps: plasticating, mixing, calendaring, extruding and insulating. According to the invention, the formula of terpolymer EP rubber is modified, electrical performance of the material is increased, the terpolymer EP rubber has excellent machinery performance and aging resistance performance, can improve the processing technology performance of the insulating material, and peeling performance of the material and a semiconduction layer can be improved, the manufacture cost of the material is reduced, and the good economic benefit is generated.
Description
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technical field
The present invention relates to a kind of terpolymer EP rubber insulation formula and preparation method thereof, belong to cable rubber insulation material technical field.
background technology
Terpolymer EP rubber (EPDM) is taking ethene, propylene as principal monomer, through solution polymerization the terpolymer that adds undersaturated the 3rd monomer (non-conjugated diene hydrocarbon) to make.In terpolymer EP rubber molecular chain, there is no polar substitution group, sterically hindered little, molecular chain is submissive, has good flexible resistance, rebound resilience, lower temperature resistance, and it is high that water-fast tree forms ability, resistance to corona and good heat resistance, and structural stability is good.
Along with China's rapid development of economy, the contradiction of power supply anxiety is more and more outstanding, and for meeting this requirement, each large Coal Exploitation improves production capacity with powerful coal excavation apparatus, and the cable quality of supporting transferring electric power requires and voltage range raising with it.Meanwhile, the subway construction of cities in China is also in like a raging fire carrying out, tunnel excavation be unable to do without shield engine, the necessary supporting corresponding flexible cable for shield machine of power transmission of shield engine, due to the work under bad environment of shield engine, very strict for the technical requirements of flexible cable for shield machine.No matter be colliery 10kV removal cable or flexible cable for shield machine, performance requriements for insulating material is very high, traditional terpolymer EP rubber can not meet both requirements, therefore study a kind of 10kV ethylene propylene rubber insulation material to exploitation 10kV coal mine moving cable, flexible cable for shield machine is most important.
summary of the invention
The object of the invention is, be the problem that basic mixture can not meet various performance requriementss for existing terpolymer EP rubber, the invention provides a kind of modified formula to terpolymer EP rubber, i.e. a kind of terpolymer EP rubber insulation formula and preparation method thereof.
Technical scheme of the present invention is, a kind of voltage rating 10kV and following Plastic-sheathed Cable insulation rubber formula, the parts by weight of its moiety are: terpolymer EP rubber 15～30, ethylene propylene rubber 11～25, zinc oxide 2.0～3.5,2 mercapto benzimidazole 1.2～2.5, Zinic stearas 0.6～1.5, P-60T 1.3～2.8, vinyl tris silane 0.4～1.6, paraffin oil 1.6～3.0, polyethylene wax 1.3～2.6, triallyl cyamelide fat 1.1～2.6, dicumyl peroxide 1.2～2.8, talcum powder 18～25, calcinated argil 14～25.
Voltage rating of the present invention be preparation method that 10kV and following Plastic-sheathed Cable insulation rubber formula are produced Plastic-sheathed Cable insulation comprise plasticate, mixing, thin-pass and calendering and extruded insulation, concrete technology step is as follows:
(1) plasticate:
1. terpolymer EP rubber and ethylene propylene rubber are weighed respectively by 2 times of the part by weight in formula;
2. the terpolymer EP rubber weighing up and ethylene propylene rubber are joined in the banburying chamber of Banbury mixer simultaneously and plasticate, the temperature of banburying chamber is controlled at 100～110 DEG C, and the time must not be less than 4 minutes, then discharging;
3. terpolymer EP rubber Banbury mixer being unloaded and the rubber unvulcanizate of ethylene propylene rubber are put into 550 type mixing roll compressing tablet rolling, press Kun temperature to be controlled at 60～70 DEG C;
4. the mixed rubber of above-mentioned compressing tablet rolling is relayed again into 360 type mixing roll thin-passes, the thickness of the mixing of rubber after thin-pass is 0.4～0.6mm, presses Kun temperature to be controlled at 60～70 DEG C;
5. the mixed rubber after thin-pass is weighed by formulation weight umber, place stand-by.
(2) mixing:
1. other moietys in formula are weighed respectively by formulation weight umber, place stand-by;
2. the mixed rubber after above-mentioned thin-pass is placed in Banbury mixer and is plasticated 3～5 minutes again, by load weighted zinc oxide, 2 mercapto benzimidazole, Zinic stearas,, vinyl tris silane, paraffin oil, polyethylene wax add in Banbury mixer and carry out mixing with mixed rubber: mixing time 2～3 minutes, temperature is controlled at 90～95 DEG C;
3. add again talcum powder, calcinated argil and above-mentioned mixed rubber in 2. to carry out mixing: mixing time 4～6 minutes, temperature is controlled at 90～95 DEG C;
4. in Banbury mixer, above-mentioned mixed rubber is 3. taken out, put into 550 type mixing rolls fully mixing 2～3 minutes, and be pressed into 2000 × 150 × 3.5mm sheet;
5. above-mentioned mixed rubber skin is 4. added 150 type rubber strainer kinds to filter, rubber strainer temperature is controlled at 90～95 DEG C.Filter mesh order number is 42 orders/inch;
6. the mixed rubber after above-mentioned 5. filtration is put into 450 type mixing rolls and be pressed into 2000 × 300 × 3.5mm sheet, sheet is taken out and treats that it is cooled to room temperature;
7. cooled sheet epoxy glue is returned to mixer mixing 2～3 minutes, then add triallyl cyamelide fat, dicumyl peroxide discharging in mixing 1 minute, Banbury mixer temperature is controlled at 90～95 DEG C;
8. in Banbury mixer, above-mentioned mixed rubber is 7. taken out, put into fully mixing 2～3 minutes rolling of 550 type mixing rolls.
(3) thin-pass and calendering:
1. the mixed rubber of the 8. Cheng Haojuan in above-mentioned mixing step is transferred in 360 type mixing rolls and carries out thin-pass two to three times, press the gap between Kun cylinder to be not more than 0.5mm;
2. the mixed rubber after thin-pass is transferred in tri-roll press machine again, rolled and become thin slice, sheet thickness 0.8～1.1mm.
(4) extruded insulation
1. rubber extruding machine temperature arranges: a point section in rubber extruding machine is arranged to different control temperature, and a district is 75～80 DEG C.2nd district are 80～85 DEG C, and 3rd district are 85～90 DEG C, are 90～95 DEG C in 4th district and extrusion die;
2. calendered sheeting is added in rubber extruding machine conductor extruded insulation;
3. the cable core after extruded insulation directly enters curing tube and vulcanizes, and vapor pressure reaches 1.52～15MPa, and ensures curing time 8～12 minutes.
In the preparation of the inventive method,
The time that described the plasticate terpolymer EP rubber of step in 2. and ethylene propylene rubber are plasticated is simultaneously 4 minutes, and the temperature of banburying chamber is controlled at 100 DEG C.
Described mixing step 2. middle mixing time is 3 minutes, 92 DEG C of temperature controls. mixing step 3. middle mixing time is 5 minutes, 92 DEG C of temperature controls.
In described extruded insulation step (1) rubber extruding machine, the control temperature of point section setting is, 80 DEG C, a district, two 85 DEG C, districts.Three 90 DEG C, districts, in 4th district and extrusion die are 95 DEG C. described isolation step (3) vapor pressure reaches 1.4 MPa, curing time 10 minutes.
The screening formulation of terpolymer EP rubber insulation of the present invention, the parts by weight of its moiety are:
Terpolymer EP rubber 18～25, ethylene propylene rubber 18～25, zinc oxide 1.8～2.8,2 mercapto benzimidazole 1.5～2.0, Zinic stearas 0.8～1.2, P-60T 1.5～2.2, vinyl tris silane 0.8～1.4, paraffin oil 1.8～2.8, polyethylene wax 1.5～2.4, triallyl cyamelide fat 1.4～2.3, dicumyl peroxide 1.5～2.5, talcum powder 20～23, calcinated argil 15～24.
The better formula of terpolymer EP rubber insulation of the present invention, the parts by weight of its moiety are:
Terpolymer EP rubber 25, ethylene propylene rubber 23, zinc oxide 3,2 mercapto benzimidazole 1.9, Zinic stearas 1.2, P-60T 2.5, vinyl tris silane 1.5, paraffin oil 2.6, polyethylene wax 2.2, triallyl cyamelide fat 2.0, dicumyl peroxide 2.4, talcum powder 21, calcinated argil 22.
The optimum formula of terpolymer EP rubber insulation of the present invention, the parts by weight of its moiety are:
Terpolymer EP rubber 22.5, ethylene propylene rubber 22.5, zinc oxide 2.6,2 mercapto benzimidazole 2.2, Zinic stearas 1.4, P-60T 2.1, vinyl tris silane 1.2, paraffin oil 2.4, polyethylene wax 2.5, triallyl cyamelide fat 2.2, dicumyl peroxide 2.5, talcum powder 20, calcinated argil 21.
The present invention's beneficial effect is compared with the prior art, the present invention carries out modified formula to terpolymer EP rubber, the electric property of material is improved, there is superior mechanical property and ageing-resistant performance, improved the process industrial art performance of insulating material simultaneously, more outstanding improvement the stripping performance of this material and semi-conductive layer.Also reduce the manufacturing cost of this material simultaneously, can the good economic benefit of output.
Embodiment
The specific embodiment of the invention is as follows:
Embodiment 1
The formula of the present embodiment terpolymer EP rubber insulation, the parts by weight of its moiety are:
Terpolymer EP rubber 22.5, ethylene propylene rubber 22.5, zinc oxide 2.6,2 mercapto benzimidazole 2.2, Zinic stearas 1.4, P-60T 2.1, vinyl tris silane 1.2, paraffin oil 2.4, polyethylene wax 2.5, triallyl cyamelide fat 2.2, dicumyl peroxide 2.5, talcum powder 20, calcinated argil 21.
Preparation process is as follows:
(1) plasticate:
1. terpolymer EP rubber and ethylene propylene rubber are weighed respectively by 2 times of the part by weight in formula;
2. the terpolymer EP rubber weighing up and ethylene propylene rubber are joined in the banburying chamber of Banbury mixer simultaneously and plasticate, the temperature of banburying chamber is controlled at 100 DEG C, and the time must not be less than 4 minutes, then discharging;
3. terpolymer EP rubber Banbury mixer being unloaded and the rubber unvulcanizate of ethylene propylene rubber are put into 550 type mixing roll compressing tablet rolling, press Kun temperature to be controlled at 60～70 DEG C;
4. the mixed rubber of above-mentioned compressing tablet rolling is relayed again into 360 type mixing roll thin-passes, the thickness of the mixing of rubber after thin-pass is 0.4～0.6mm, presses Kun temperature to be controlled at 60～70 DEG C;
5. the mixed rubber after thin-pass is weighed by formulation weight umber, place stand-by.
(2) mixing:
1. other moietys in formula are weighed respectively by formulation weight umber, place stand-by;
2. the mixed rubber after above-mentioned thin-pass is placed in Banbury mixer and is plasticated 3～5 minutes again, by load weighted zinc oxide, 2 mercapto benzimidazole, Zinic stearas,, vinyl tris silane, paraffin oil, polyethylene wax add in Banbury mixer and carry out mixing with mixed rubber: mixing time 2～3 minutes, temperature is controlled at 92 DEG C;
3. add again talcum powder, calcinated argil and above-mentioned mixed rubber in 2. to carry out mixing: mixing time 4～6 minutes, temperature is controlled at 92 DEG C;
4. in Banbury mixer, above-mentioned mixed rubber is 3. taken out, put into 550 type mixing rolls fully mixing 2～3 minutes, and be pressed into 2000 × 150 × 3.5mm sheet;
5. above-mentioned mixed rubber skin is 4. added 150 type rubber strainer kinds to filter, rubber strainer temperature is controlled at 90～95 DEG C.Filter mesh order number is 42 orders/inch;
6. the mixed rubber after above-mentioned 5. filtration is put into 450 type mixing rolls and be pressed into 2000 × 300 × 3.5mm sheet, sheet is taken out and treats that it is cooled to room temperature;
7. cooled sheet epoxy glue is returned to mixer mixing 2～3 minutes, then add triallyl cyamelide fat, dicumyl peroxide discharging in mixing 1 minute, Banbury mixer temperature is controlled at 90～95 DEG C;
8. in Banbury mixer, above-mentioned mixed rubber is 7. taken out, put into fully mixing 2～3 minutes rolling of 550 type mixing rolls.
(3) thin-pass and calendering:
1. the mixed rubber of the 8. Cheng Haojuan in above-mentioned mixing step is transferred in 360 type mixing rolls and carries out thin-pass two to three times, press the gap between Kun cylinder to be not more than 0.5mm;
2. the mixed rubber after thin-pass is transferred in tri-roll press machine again, rolled and become thin slice, sheet thickness 0.8～1.1mm.
(4) extruded insulation
1. rubber extruding machine temperature arranges: a point section in rubber extruding machine is arranged to different control temperature, and a district is 80 DEG C.2nd district are 85 DEG C, and 3rd district are 90 DEG C, are 95 DEG C in 4th district and extrusion die;
2. calendered sheeting is added in rubber extruding machine conductor extruded insulation;
3. the cable core after extruded insulation directly enters curing tube and vulcanizes, and vapor pressure reaches 1.4MPa, and ensures curing time 10 minutes.
Embodiment 2
The formula of the present embodiment terpolymer EP rubber insulation, the parts by weight of its moiety are:
Terpolymer EP rubber 25, ethylene propylene rubber 23, zinc oxide 3,2 mercapto benzimidazole 1.9, Zinic stearas 1.2, P-60T 2.5, vinyl tris silane 1.5, paraffin oil 2.6, polyethylene wax 2.2, triallyl cyamelide fat 2.0, dicumyl peroxide 2.4, talcum powder 21, calcinated argil 22.
Be prepared by the preparation process of embodiment 1.
Claims (5)
1. a terpolymer EP rubber insulation, is characterized in that, the parts by weight of described rubber insulation moiety are:
Terpolymer EP rubber 15～30, ethylene propylene rubber 11～25, zinc oxide 2.0～3.5,2 mercapto benzimidazole 1.2～2.5, Zinic stearas 0.6～1.5, P-60T 1.3～2.8, vinyl tris silane 0.4～1.6, paraffin oil 1.6～3.0, polyethylene wax 1.3～2.6, triallyl cyamelide fat 1.1～2.6, dicumyl peroxide 1.2～2.8, talcum powder 18～25, calcinated argil 14～25.
2. a kind of terpolymer EP rubber insulation according to claim 1, it is characterized in that, the parts by weight of described rubber insulation moiety are: terpolymer EP rubber 25, ethylene propylene rubber 23, zinc oxide 3.0,2 mercapto benzimidazole 1.9, Zinic stearas 1.2, P-60T 2.5, vinyl tris silane 1.5, paraffin oil 2.6, polyethylene wax 2.2, triallyl cyamelide fat 2.0, dicumyl peroxide 2.4, talcum powder 21, calcinated argil 22.
3. a kind of terpolymer EP rubber insulation according to claim 1 and 2, it is characterized in that, the parts by weight of described rubber insulation moiety are: terpolymer EP rubber 22.5, ethylene propylene rubber 22.5, zinc oxide 2.6,2 mercapto benzimidazole 2.2, Zinic stearas 1.4, P-60T 2.1, vinyl tris silane 1.2, paraffin oil 2.4, polyethylene wax 2.5, triallyl cyamelide fat 2.2, dicumyl peroxide 2.5, talcum powder 20, calcinated argil 21.
4. the preparation method who adopts a kind of terpolymer EP rubber insulation claimed in claim 1, is characterized in that, concrete technology step is as follows:
(1) plasticate:
1. terpolymer EP rubber and ethylene propylene rubber are weighed respectively by 2 times of the part by weight in formula;
2. the terpolymer EP rubber weighing up and ethylene propylene rubber are joined in the banburying chamber of Banbury mixer simultaneously and plasticate, the temperature of banburying chamber is controlled at 100～110 DEG C, and the time must not be less than 4 minutes, then discharging;
3. terpolymer EP rubber Banbury mixer being unloaded and the rubber unvulcanizate of ethylene propylene rubber are put into 550 type mixing roll compressing tablet rolling, press Kun temperature to be controlled at 60～70 DEG C;
4. the mixed rubber of above-mentioned compressing tablet rolling is relayed again into 360 type mixing roll thin-passes, the thickness of the mixing of rubber after thin-pass is 0.4～0.6mm, presses Kun temperature to be controlled at 60～70 DEG C;
5. the mixed rubber after thin-pass is weighed by formulation weight umber, place stand-by;
(2) mixing:
1. other moietys in formula are weighed respectively by formulation weight umber, place stand-by;
2. the mixed rubber after above-mentioned thin-pass is placed in Banbury mixer and is plasticated 3～5 minutes again, by load weighted zinc oxide, 2 mercapto benzimidazole, Zinic stearas,, vinyl tris silane, paraffin oil, polyethylene wax add in Banbury mixer and carry out mixing with mixed rubber: mixing time 2～3 minutes, temperature is controlled at 90～95 DEG C;
3. add again talcum powder, calcinated argil and above-mentioned mixed rubber in 2. to carry out mixing: mixing time 4～6 minutes, temperature is controlled at 90～95 DEG C;
4. in Banbury mixer, above-mentioned mixed rubber is 3. taken out, put into 550 type mixing rolls fully mixing 2～3 minutes, and be pressed into 2000 × 150 × 3.5mm sheet;
5. above-mentioned mixed rubber skin is 4. added 150 type rubber strainer kinds to filter, rubber strainer temperature is controlled at 90～95 DEG C; Filter mesh order number is 42 orders/inch;
6. the mixed rubber after above-mentioned 5. filtration is put into 450 type mixing rolls and be pressed into 2000 × 300 × 3.5mm sheet, sheet is taken out and treats that it is cooled to room temperature;
7. cooled sheet epoxy glue is returned to mixer mixing 2～3 minutes, then add triallyl cyamelide fat, dicumyl peroxide discharging in mixing 1 minute, Banbury mixer temperature is controlled at 90～95 DEG C;
8. in Banbury mixer, above-mentioned mixed rubber is 7. taken out, put into fully mixing 2～3 minutes rolling of 550 type mixing rolls;
(3) thin-pass and calendering:
1. the mixed rubber of the 8. Cheng Haojuan in above-mentioned mixing step is transferred in 360 type mixing rolls and carries out thin-pass two to three times, press the gap between Kun cylinder to be not more than 0.5mm;
2. the mixed rubber after thin-pass is transferred in tri-roll press machine again, rolled and become thin slice, sheet thickness 0.8～1.1mm;
(4) extruded insulation:
1. rubber extruding machine temperature arranges: a point section in rubber extruding machine is arranged to different control temperature, and a district is 75～80 DEG C, and 2nd district are 80～85 DEG C, and 3rd district are 85～90 DEG C, are 90～95 DEG C in 4th district and extrusion die;
2. calendered sheeting is added in rubber extruding machine conductor extruded insulation;
3. the cable core after extruded insulation directly enters curing tube and vulcanizes, and vapor pressure reaches 1.52～15MPa, and ensures curing time 8～12 minutes.
5. the preparation method of a kind of terpolymer EP rubber insulation according to claim 4, is characterized in that,
The time that described the plasticate terpolymer EP rubber of step in 2. and ethylene propylene rubber are plasticated is simultaneously 4 minutes, and the temperature of banburying chamber is controlled at 100 DEG C;
Described mixing step 2. middle mixing time is 3 minutes, 92 DEG C of temperature controls. mixing step 3. middle mixing time is 5 minutes, 92 DEG C of temperature controls;
Described extruded insulation step
in rubber extruding machine, the control temperature of point section setting is, 80 DEG C, a district, and two 85 DEG C, districts, three 90 DEG C, districts, in 4th district and extrusion die are 95 DEG C. described isolation step (3) vapor pressure reaches 1.4 MPa, curing time 10 minutes.
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| CN201410410847.7A CN104151720B (en) | 2014-08-20 | 2014-08-20 | A kind of ethylene propylene diene rubber insulation rubber formula and preparation method thereof |
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Cited By (5)
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| CN105670132A (en) * | 2016-03-08 | 2016-06-15 | 苏州科茂电子材料科技有限公司 | Medium-voltage cable insulating material and preparation method thereof |
| CN105860288A (en) * | 2016-06-08 | 2016-08-17 | 产俊涛 | Ozone-proof and anti-aging modified ethylene propylene rubber cable material and preparation method thereof |
| CN107043509A (en) * | 2016-11-18 | 2017-08-15 | 安徽伊法拉电气有限公司 | T-shaped wire clamp shield material and preparation method thereof |
| CN108299741A (en) * | 2017-01-13 | 2018-07-20 | 杭州星庐科技有限公司 | A kind of rubber-based conductance non-linear dielectric materials and its processing method |
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| CN108299741B (en) * | 2017-01-13 | 2021-06-22 | 杭州星庐科技有限公司 | Rubber-based conductive nonlinear insulating material and processing method thereof |
| CN116285126A (en) * | 2023-04-06 | 2023-06-23 | 江苏上上电缆集团新材料有限公司 | High-electrical-property medium-voltage flexible cable rubber insulating material and preparation method thereof |
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