CN106188880A - The EPT rubber packing bar that a kind of corona-resistance property strengthens - Google Patents

The EPT rubber packing bar that a kind of corona-resistance property strengthens Download PDF

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Publication number
CN106188880A
CN106188880A CN201610569745.9A CN201610569745A CN106188880A CN 106188880 A CN106188880 A CN 106188880A CN 201610569745 A CN201610569745 A CN 201610569745A CN 106188880 A CN106188880 A CN 106188880A
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China
Prior art keywords
corona
minute
obtains
resistance property
rubber packing
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Application number
CN201610569745.9A
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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 CN201610569745.9A priority Critical patent/CN106188880A/en
Publication of CN106188880A publication Critical patent/CN106188880A/en
Withdrawn legal-status Critical Current

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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
    • 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
    • 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
    • C08J2351/00—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers
    • 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
    • C08J2351/00—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers
    • C08J2351/06—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
    • 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
    • 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
    • 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

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

The invention discloses the EPT rubber packing bar that a kind of corona-resistance property strengthens, be prepared by the raw materials in: ethylene propylene diene rubber 100 105, OMMT15 17, high density polyethylene (HDPE) 20 22, molybdenum bisuphide 79, polytetrafluoroethylene powder 23, DOP3 4, dibenzoyl peroxide 0.2 0.22, maleic anhydride 45, Cosan 2.5 3, white carbon black 12 14, Kynoar 67, nano titanium oxide 23, Barium metatitanate. 8 9.5, dehydrated alcohol are appropriate.The sealing strip that the present invention makes has favorable elasticity and incompressible deformation, ageing-resistant, and Inverter fed motor is suitable as the sealing of high pressure or low-tension switch cabinet, plays good tracking-resistant effect.

Description

The EPT rubber packing bar that a kind of corona-resistance property strengthens
Technical field
The present invention relates to field of rubber technology, particularly relate to the EPT rubber packing that a kind of corona-resistance property strengthens 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 the EPDM that a kind of corona-resistance property strengthens Rubber weather strip.
The present invention is achieved by the following technical solutions:
The EPT rubber packing bar that a kind of corona-resistance property strengthens, 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, Kynoar 6-7, nanometer titanium dioxide Titanium 2-3, Barium metatitanate. 8-9.5, dehydrated alcohol are appropriate.
The EPT rubber packing bar that described a kind of corona-resistance property strengthens, 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 Kynoar, nano titanium oxide, Barium metatitanate. mixing, adding the dehydrated alcohol of total amount 2-3 times amount, stirring is all Even rear ultrasonic disperse 30-40 minute, is poured over the suspension being mixed thoroughly in glass plate, dry at a temperature of 50-60 DEG C Dry until dehydrated alcohol volatilizees completely, obtain mixed-powder；
(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 mixed-powder, Cosan, white carbon black and remaining residual components that step (2) obtains, continue to be incubated 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 utilizes Kynoar and Barium metatitanate., nano titanium oxide to be mixed and made into the mixing with high-k Thing, adds in ethylene propylene diene rubber matrix so that material overall structure is finer and close, plays the work delaying conductive channel to be formed With, thus improve the corona-resistance property that material is overall；The sealing strip that the present invention makes has favorable elasticity and incompressible deformation, Ageing-resistant, Inverter fed motor, it is suitable as the sealing of high pressure or low-tension switch cabinet, plays good tracking-resistant effect.
Detailed description of the invention
The EPT rubber packing bar that a kind of corona-resistance property strengthens, 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, Kynoar 6, nano titanium oxide 2, Barium metatitanate. 8, dehydrated alcohol In right amount.
The EPT rubber packing bar that described a kind of corona-resistance property strengthens, 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 Kynoar, nano titanium oxide, Barium metatitanate. mixing, add the dehydrated alcohol of total amount 2 times amount, stir Rear ultrasonic disperse 30 minutes, is poured over the suspension being mixed thoroughly in glass plate, and is dried until nothing at a temperature of 50 DEG C Water-ethanol volatilizees completely, obtains mixed-powder；
(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 mixed-powder, Cosan, white carbon black and remaining residual components that step (2) obtains, continue to be incubated mixing 10 minutes, 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 27.7%, O.3MPa the water absorption rate after keeping 24h under hydraulic pressure reduces 13.3%, through 50000 circulation wet friction tests, is hardly visible mill Damage sign.

Claims (2)

1. the EPT rubber packing bar that a corona-resistance property strengthens, 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, Kynoar 6-7, nano titanium oxide 2-3, Barium metatitanate. 8-9.5, dehydrated alcohol are appropriate.
A kind of corona-resistance property strengthen EPT rubber packing bar, 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 Kynoar, nano titanium oxide, Barium metatitanate. mixing, adding the dehydrated alcohol of total amount 2-3 times amount, stirring is all Even rear ultrasonic disperse 30-40 minute, is poured over the suspension being mixed thoroughly in glass plate, dry at a temperature of 50-60 DEG C Dry until dehydrated alcohol volatilizees completely, obtain mixed-powder；
(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 mixed-powder, Cosan, white carbon black and remaining residual components that step (2) obtains, continue to be incubated 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.
CN201610569745.9A 2016-07-19 2016-07-19 The EPT rubber packing bar that a kind of corona-resistance property strengthens Withdrawn CN106188880A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108047576A (en) * 2018-01-25 2018-05-18 东莞市杜特橡胶制品有限公司 A kind of high abrasion EPDM dynamic sealing materials

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1425712A (en) * 2003-01-09 2003-06-25 上海交通大学 Triple ethylene-propylene rubber/montmorillonoid peeling nano composite material and its preparing method
CN101550254A (en) * 2009-05-08 2009-10-07 尤建义 Preparation technique of high temperature resistant, anti-corona high-resistance ethylene propylene terpolymer
CN102304255A (en) * 2011-09-30 2012-01-04 南京金三力橡塑有限公司 Ethylene propylene diene monomer rubber material for automobile cooling system sealing elements and preparation method thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1425712A (en) * 2003-01-09 2003-06-25 上海交通大学 Triple ethylene-propylene rubber/montmorillonoid peeling nano composite material and its preparing method
CN101550254A (en) * 2009-05-08 2009-10-07 尤建义 Preparation technique of high temperature resistant, anti-corona high-resistance ethylene propylene terpolymer
CN102304255A (en) * 2011-09-30 2012-01-04 南京金三力橡塑有限公司 Ethylene propylene diene monomer rubber material for automobile cooling system sealing elements and preparation method thereof

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
冯振刚: "有机蒙脱土/三元乙丙橡胶密封材料的制备与性能研究", 《中国优秀硕士学位论文全文数据库工程科技I辑》 *
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108047576A (en) * 2018-01-25 2018-05-18 东莞市杜特橡胶制品有限公司 A kind of high abrasion EPDM dynamic sealing materials

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Application publication date: 20161207