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CN106046565A - Voltage-resistant anti-breakdown enhanced ethylene propylene diene monomer rubber sealing strip - Google Patents

Voltage-resistant anti-breakdown enhanced ethylene propylene diene monomer rubber sealing strip Download PDF

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Publication number
CN106046565A
CN106046565A CN201610569777.9A CN201610569777A CN106046565A CN 106046565 A CN106046565 A CN 106046565A CN 201610569777 A CN201610569777 A CN 201610569777A CN 106046565 A CN106046565 A CN 106046565A
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Prior art keywords
parts
ethylene propylene
propylene diene
minute
powder
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Application number
CN201610569777.9A
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Chinese (zh)
Inventor
陆厚平
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Hefei E-Chon Metal Plate Technology Co Ltd
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Hefei E-Chon Metal Plate Technology Co Ltd
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Priority to CN201610569777.9A priority Critical patent/CN106046565A/en
Publication of CN106046565A publication Critical patent/CN106046565A/en
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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
    • 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
    • B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
    • B29B7/7461—Combinations of dissimilar mixers
    • 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
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B29C35/10—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation for articles of indefinite length
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/92—Measuring, controlling or regulating
    • 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
    • C08J3/20—Compounding polymers with additives, e.g. colouring
    • C08J3/22—Compounding polymers with additives, e.g. colouring using masterbatch techniques
    • C08J3/226—Compounding polymers with additives, e.g. colouring using masterbatch techniques using a polymer as a carrier
    • 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
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
    • B29C2035/0855—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation using microwave
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/9258—Velocity
    • B29C2948/9259—Angular velocity
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92704—Temperature
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92819—Location or phase of control
    • B29C2948/92857—Extrusion unit
    • B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
    • B29C2948/92885—Screw or gear
    • 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
    • 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
    • C08J2423/06—Polyethene
    • 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
    • C08K2201/00—Specific properties of additives
    • C08K2201/011—Nanostructured additives
    • 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
    • C08K2201/00—Specific properties of additives
    • C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
    • 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
    • C08L2201/00—Properties
    • C08L2201/14—Gas barrier composition
    • 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
    • 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
    • C08L2207/00—Properties characterising the ingredient of the composition
    • C08L2207/06—Properties of polyethylene
    • C08L2207/062—HDPE
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2312/00—Crosslinking

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  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Polymers & Plastics (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Toxicology (AREA)
  • Physics & Mathematics (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Thermal Sciences (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Sealing Material Composition (AREA)

Abstract

The invention discloses a voltage-resistant anti-breakdown enhanced ethylene propylene diene monomer rubber sealing strip. The voltage-resistant anti-breakdown enhanced ethylene propylene diene monomer rubber sealing strip is prepared from the following raw materials in parts by weight: 100 to 105 parts of ethylene propylene diene monomer rubber, 15 to 17 parts of OMMT, 20 to 22 parts of high-density polyethylene, 7 to 9 parts of molybdenum disulfide, 2 to 3 parts of polytetrafluoroethylene powder, 3 to 4 parts of DOP, 0.2 to 0.22 part of dibenzoyl peroxide, 4 to 5 parts of maleic anhydride, 2.5 to 3 parts of sulphur powder, 12 to 14 parts of carbon black, 2 to 2.5 parts of tetramethyl thiuram disulfide, 3.5 to 4 parts of calciumoctoate, 1.5 to 2 parts of N-cyclohexyl-2-benzothiazole sulphonamide, 4 to 5 parts of nano-aluminium hydroxide, 4 to 5 parts of metallocene polyethylene, 1.2 to 1.5 parts of vinyl trisilane, 0.8 to 1 part of polyvinyl alcohol, 2 to 3 parts of graphite powder, and a suitable amount of deionized water. The product disclosed by the invention has relatively high voltage resistance level and relatively good insulating property, can meet the requirement on rated sealing of a high-voltage switch cabinet, and prevents the hazard caused by electric leakage.

Description

Enhancing EPT rubber packing adhesive tape is worn in a kind of pressure resistance
Technical field
The present invention relates to field of rubber technology, particularly relate to a kind of pressure resistance and wear enhancing EPT rubber packing glue Bar.
Background technology
Switch cubicle is the equipment of a kind of electric power being supplied to required for people's production, life, and its casing is by front shrouding, side Shrouding and the sealing structure of rear shrouding composition.But, when several switch cabinet combination assembly are used, the side seal board spliced mutually it Between there will be gap.This gap not only affects overall appearance, and is easy to fall into dust or water droplet, is also not enough to stop Electromagnetic radiation, causes the unsafe factor in use.For preventing inside the access switch cabinets such as dust, foreign body or moisture, and cause The hydraulic performance decline of cabinet inner part or damage, the use of sealed switch cabinet is more and more extensive, therefore the requirement to sealing is more and more higher, Especially air seal switch cubicle.Cabinet sealing strip can be by having favorable elasticity and the EPDM of incompressible deformation Rubber is made, though having superior mechanical performance and ageing-resistant performance etc., but in use due to light, heat, oxygen and corruption The impact of the environmental factorss such as erosion medium still can cause the progressively deterioration of performance, causes EPT rubber packing bar to lose efficacy, therefore, Improve its durability by ethylene propylene diene monomer (EPDM) material is modified, make for improving EPT rubber packing material By performance, extend its service life significant.
In " preparation of organo montmorillonite/EPT rubber packing material and performance study " literary composition, organic illiteracy is used to take off Ethylene propylene diene rubber is modified by soil, defines exfoliated or intercal type nano composite construction, can improve EPDM The air-liquid barrier property of rubber, heatproof air aging performance and the resistance to ageing properties that repeatedly soaks.It is subsequently used for shrouding before switch cubicle Sealing joint strip but due to needs often switch, because of friction, sealing joint strip quick abrasion, is easily caused poor sealing.In above-mentioned article Although sealing strip ethylene propylene diene monomer (EPDM) material having been carried out ageing-resistant modification, but the enhancing of its wearability not having be emphasized, This is accomplished by being modified original sealing strip material, to meet the demand of existing various switch cubicle.
Summary of the invention
The object of the invention is contemplated to make up the defect of prior art, it is provided that enhancing ethylene-propylene-diene monomer is worn in a kind of pressure resistance Glue sealing joint strip.
The present invention is achieved by the following technical solutions:
Enhancing EPT rubber packing adhesive tape is worn in a kind of pressure resistance, is prepared by the raw materials in: ethylene-propylene-diene monomer Glue 100-105, OMMT15-17, high density polyethylene (HDPE) 20-22, molybdenum bisuphide 7-9, polytetrafluoroethylene powder 2-3, DOP3-4, peroxide Change dibenzoyl 0.2-0.22, maleic anhydride 4-5, Cosan 2.5-3, white carbon black 12-14, tetramethylthiuram disulfide 2-2.5, Calcium octoate 3.5-4, N-cyclohexyl-2-benzothiazole sulfonamide 1.5-2, nano-aluminum hydroxide 4-5, metallocene PE 4-5, Vinyl tris silane 1.2-1.5, polyvinyl alcohol 0.8-1, graphite powder 2-3, deionized water are appropriate.
Enhancing EPT rubber packing adhesive tape is worn in resistance that described one is pressure, is made up of step in detail below:
(1) high density polyethylene (HDPE) and DOP, molybdenum bisuphide, polytetrafluoroethylene powder are put in high speed mixer, with 1000-1200 Rev/min speed mix 6-8 minute, be then fed in double screw extruder, add dibenzoyl peroxide, maleic anhydride, add Hot to 90-100 DEG C, extruding pelletization, obtain wear-resisting lubricating modification master batch；
(2) by dried nano-aluminum hydroxide, graphite powder ultrasonic disperse in 2-3 times amount deionized water, suspension is formed, so Rear addition vinyl tris silane, polyvinyl alcohol, be heated to the centrifugation after 20-30 minute of 50-60 DEG C of ultrasonic disperse, filters, will The filter cake obtained is put in vacuum drying oven, dries, obtain modified Nano powder at a temperature of 50-60 DEG C；Metallocene is gathered Ethylene and modified Nano powder are put in batch mixer, with discharging after temperature batch mixing 15-20 minute of 130-140 DEG C, are resisted Wear modified mixture；
(3) by ethylene propylene diene rubber and OMMT in banbury mixing 8-10 minute, melting temperature is kept to be 130-140 DEG C, so After be sequentially added into the resistance that step (2) obtains and wear modified mixture, Cosan, white carbon black and remaining residual components, continue insulation Mixing 10-12 minute, discharging, then it is pressed into thin slice through two-roll mill, obtains masterbatch；
(4) the lubricating modification master batch that step (1) obtains is put in twin-screw extruder, be heated to after abundant fusion plastification with step (3) the masterbatch mixing obtained, is then fed in single screw extrusion machine, controls screw speed 30-40 rev/min, extruder temperature 90- 100 DEG C, blend glue stuff is made to extrude continuously, through 1000-1500MHz microwave continuous vulcanization molding, at electric heating drum after parking 24 hours In wind baking oven, the temperature with 150-160 DEG C vulcanizes 100-120 minute, obtains the present invention.
The invention have the advantage that the present invention under the initiation of dibenzoyl peroxide, for molybdenum bisuphide, politef The high density polyethylene (HDPE) that powder is blended carries out modified by maleic acid anhydride graft process and obtains wear-resisting lubricating modification master batch, has not only possessed good Good wear-resisting, self-lubricating property, well can be combined with rubber matrix simultaneously；The present invention utilizes by the way of melt blending Ethylene propylene diene rubber is modified by OMMT, defines the nano composite structure of intercal type, can significantly improve ethylene-propylene-diene monomer The air-liquid barrier property of glue, heatproof air aging performance and the resistance to ageing properties that repeatedly soaks；Finally by wear-resisting lubricating modification is female Grain fusion plastification mixes with modified ethylene propylene diene rubber masterbatch, through extrusion continuously and is produced through post-cure Product, post-cure can make rubber cross more perfect, removes the little molecule of residual, reduces material compression set；This The excellent physical properties of bright product, ageing-resistant, wear-resisting, closed performance is excellent.
The present invention by a series of process means by composition systems such as nano-aluminum hydroxide, graphite powder, metallocene PEs Becoming compound, be then added in ethylene propylene diene rubber matrix, the introducing of these compositions significantly reduces the injection of space charge And gathering, improve space charge characteristic, improve the dc breakdown electric field intensity of material；Product of the present invention has higher resistance to Voltage levels and preferable insulating properties, it is possible to meet high-tension switch cabinet volume and seal, the harm that preventing leaks electricity brings.
Detailed description of the invention
Enhancing EPT rubber packing adhesive tape is worn in a kind of pressure resistance, is made up of the raw material of following weight portion (kilogram): Ethylene propylene diene rubber 100, OMMT15, high density polyethylene (HDPE) 20, molybdenum bisuphide 7, polytetrafluoroethylene powder 2, DOP3, diphenyl peroxide Formyl 0.2, maleic anhydride 4, Cosan 2.5, white carbon black 12, tetramethylthiuram disulfide 2, calcium octoate 3.5, N-cyclohexyl-2- Benzothiazole sulfonamide 1.5, nano-aluminum hydroxide 4, metallocene PE 4, vinyl tris silane 1.2, polyvinyl alcohol 0.8, Graphite powder 2, deionized water are appropriate.
Enhancing EPT rubber packing adhesive tape is worn in resistance that described one is pressure, is made up of step in detail below:
(1) high density polyethylene (HDPE) and DOP, molybdenum bisuphide, polytetrafluoroethylene powder are put in high speed mixer, with 1000 revs/min Speed mix 6 minutes, be then fed in double screw extruder, add dibenzoyl peroxide, maleic anhydride, be heated to 90 DEG C, extruding pelletization, obtain wear-resisting lubricating modification master batch；
(2) by dried nano-aluminum hydroxide, graphite powder ultrasonic disperse in 2 times amount deionized waters, suspension is formed, then Add vinyl tris silane, polyvinyl alcohol, be heated to the centrifugation after 20 minutes of 50 DEG C of ultrasonic disperse, filter, the filter that will obtain Cake is put in vacuum drying oven, dries, obtain modified Nano powder at a temperature of 50 DEG C；Metallocene PE is received with modification Rice flour end is put in batch mixer, with discharging after the temperature batch mixing 15 minutes of 130 DEG C, obtains resistance and wears modified mixture；
(3) by ethylene propylene diene rubber and OMMT in banbury mixing 8 minutes, keeping melting temperature is 130 DEG C, adds the most successively Enter the resistance that step (2) obtains and wear modified mixture, Cosan, white carbon black and remaining residual components, continue mixing 10 points of insulation Clock, discharging, then it is pressed into thin slice through two-roll mill, obtains masterbatch；
(4) the lubricating modification master batch that step (1) obtains is put in twin-screw extruder, be heated to after abundant fusion plastification with step (3) the masterbatch mixing obtained, is then fed in single screw extrusion machine, control screw speed 30 revs/min, extruder temperature 90 DEG C, Make blend glue stuff extrude continuously, through 1000MHz microwave continuous vulcanization molding, after parking 24 hours in electric heating convection oven with The temperature of 150 DEG C vulcanizes 100 minutes, obtains the present invention.
Product of the present invention entered performance test, and the air transmission coefficient of more common EPT rubber packing bar reduces 27.5%, O.3MPa the water absorption rate after keeping 24h under hydraulic pressure reduces 14.4%, through 50000 circulation wet friction tests, is hardly visible mill Damage sign.

Claims (2)

1. enhancing EPT rubber packing adhesive tape is worn in a pressure resistance, it is characterised in that by the raw material system of following weight portion Become: ethylene propylene diene rubber 100-105, OMMT15-17, high density polyethylene (HDPE) 20-22, molybdenum bisuphide 7-9, polytetrafluoroethylene powder 2- 3, DOP3-4, dibenzoyl peroxide 0.2-0.22, maleic anhydride 4-5, Cosan 2.5-3, white carbon black 12-14, curing tetramethyl Base thiuram 2-2.5, calcium octoate 3.5-4, N-cyclohexyl-2-benzothiazole sulfonamide 1.5-2, nano-aluminum hydroxide 4-5, cyclopentadienyl Metal polyethylene 4-5, vinyl tris silane 1.2-1.5, polyvinyl alcohol 0.8-1, graphite powder 2-3, deionized water are appropriate.
A kind of pressure resistance wear enhancing EPT rubber packing adhesive tape, it is characterised in that by with Lower concrete steps are made:
(1) high density polyethylene (HDPE) and DOP, molybdenum bisuphide, polytetrafluoroethylene powder are put in high speed mixer, with 1000-1200 Rev/min speed mix 6-8 minute, be then fed in double screw extruder, add dibenzoyl peroxide, maleic anhydride, add Hot to 90-100 DEG C, extruding pelletization, obtain wear-resisting lubricating modification master batch；
(2) by dried nano-aluminum hydroxide, graphite powder ultrasonic disperse in 2-3 times amount deionized water, suspension is formed, so Rear addition vinyl tris silane, polyvinyl alcohol, be heated to the centrifugation after 20-30 minute of 50-60 DEG C of ultrasonic disperse, filters, will The filter cake obtained is put in vacuum drying oven, dries, obtain modified Nano powder at a temperature of 50-60 DEG C；Metallocene is gathered Ethylene and modified Nano powder are put in batch mixer, with discharging after temperature batch mixing 15-20 minute of 130-140 DEG C, are resisted Wear modified mixture；
(3) by ethylene propylene diene rubber and OMMT in banbury mixing 8-10 minute, melting temperature is kept to be 130-140 DEG C, so After be sequentially added into the resistance that step (2) obtains and wear modified mixture, Cosan, white carbon black and remaining residual components, continue insulation Mixing 10-12 minute, discharging, then it is pressed into thin slice through two-roll mill, obtains masterbatch；
(4) the lubricating modification master batch that step (1) obtains is put in twin-screw extruder, be heated to after abundant fusion plastification with step (3) the masterbatch mixing obtained, is then fed in single screw extrusion machine, controls screw speed 30-40 rev/min, extruder temperature 90- 100 DEG C, blend glue stuff is made to extrude continuously, through 1000-1500MHz microwave continuous vulcanization molding, at electric heating drum after parking 24 hours In wind baking oven, the temperature with 150-160 DEG C vulcanizes 100-120 minute, obtains the present invention.
CN201610569777.9A 2016-07-19 2016-07-19 Voltage-resistant anti-breakdown enhanced ethylene propylene diene monomer rubber sealing strip Withdrawn CN106046565A (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102936369A (en) * 2012-11-26 2013-02-20 江苏德威新材料股份有限公司 Silane self-crosslinked polyolefin flexible insulation cable material and preparation method thereof
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Application publication date: 20161026