CN110283409A - A kind of anti creepage trace fluorubber sealing material and preparation method thereof - Google Patents

A kind of anti creepage trace fluorubber sealing material and preparation method thereof Download PDF

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Publication number
CN110283409A
CN110283409A CN201910515549.7A CN201910515549A CN110283409A CN 110283409 A CN110283409 A CN 110283409A CN 201910515549 A CN201910515549 A CN 201910515549A CN 110283409 A CN110283409 A CN 110283409A
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parts
fluorubber
sealing material
nano
creepage trace
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王振
国建宝
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Maintenance and Test Center of Extra High Voltage Power Transmission Co
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Maintenance and Test Center of Extra High Voltage Power Transmission Co
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
    • C08K13/04—Ingredients characterised by their shape and organic or inorganic ingredients
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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    • 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
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    • C08K3/38—Boron-containing compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K3/00—Materials not provided for elsewhere
    • C09K3/10—Materials in mouldable or extrudable form for sealing or packing joints or covers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2217—Oxides; Hydroxides of metals of magnesium
    • C08K2003/222—Magnesia, i.e. magnesium oxide
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2217—Oxides; Hydroxides of metals of magnesium
    • C08K2003/2224—Magnesium hydroxide
    • 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
    • C08K2003/2227—Oxides; Hydroxides of metals of aluminium
    • 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
    • C08K3/38—Boron-containing compounds
    • C08K2003/382—Boron-containing compounds and nitrogen
    • C08K2003/385—Binary compounds of nitrogen with boron
    • 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
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    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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    • 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
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    • C09K3/00—Materials not provided for elsewhere
    • C09K3/10—Materials in mouldable or extrudable form for sealing or packing joints or covers
    • C09K2003/1034—Materials or components characterised by specific properties
    • C09K2003/1078—Fire-resistant, heat-resistant materials

Abstract

The invention discloses a kind of anti creepage trace fluorubber sealing material, raw material includes: 100 parts of fluorubber, 5-20 parts of white carbon black, 5-10 parts of nm-class boron nitride, 5-10 parts of nano layered silicate, 10-40 parts of nano-aluminium oxide, 50-70 parts of aluminium hydroxide, 40-80 parts of magnesium hydroxide, 3-7 parts of activated magnesia, 2-4 parts of vulcanizing agent by weight.The present invention also discloses the preparation methods of the anti creepage trace fluorubber sealing material.Anti creepage trace fluorubber sealing material of the invention has good thermal stability, electrical erosion resistance and anti creepage trace performance.

Description

A kind of anti creepage trace fluorubber sealing material and preparation method thereof
Technical field
The present invention relates to seal rubber technical fields, and in particular to a kind of anti creepage trace fluorubber sealing material and its system Preparation Method
Background technique
Core equipment in DC transmission engineering first is that converter valve, converter valve can generate a large amount of heat in operation, And converter valve cooling system is the essential porter of the heat, safe operation affects the safety fortune of direct current transportation Row.Converter valve sealing element has extremely important effect in converter valve cooling system, and the security reliability of sealing element is direct It is related to the long-term operation performance of entire converter station.Converter valve inner cold water leak is frequently to influence southern net DC power transmission system in recent years The main problem of system operation.The main reason for causing converter valve leak first is that screening electrodes seal washer fail.This is because It is low when on the one hand passing through high when the cooling water temperature of seal washer with the longtime running of converter valve, especially conducted under high temperature Heat to seal washer cannot pass in time, so that the strand of seal washer part is arranged and irreversible shadow has occurred It rings, its compression set is caused to increase；On the other hand, with the accumulation of screening electrodes anode sides black scale, in cooling Electrochemical reaction can occur under the action of water and weak current, deposit is more, and electrochemical reaction is stronger, to make seal washer Serious galvano-cautery occurs.Therefore, guarantee sealing under the premise of, how the thermal conductivity and proof tracking of lift-off seal material Can, for guaranteeing the sealing of converter valve cooling system, it appears particularly important.
The prior art makes electrode seal washer using the fluorubber material of no heat transfer, non-antiflaming system, with the change of current The longtime running of valve, compression set and electrochemical corrosion at seal washer increase, are formed and leaked electricity on seal washer surface Trace is played, to generate ablation to seal washer, seal failure is caused, influences the safe operation of entire converter valve.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of anti creepage trace fluorubber sealing material and its preparation side Method passes through addition high thermal conductivity and high-insulativity powder nanometer boron nitride, high barrier and high flame retardant filler nanometer stratiform silicon The nano-aluminium oxide of hydrochlorate, high heat conductance and high flame retardant promotes the anti creepage trace performance of fluorubber.
In order to achieve the above object, the technical solution adopted by the present invention is that:
A kind of anti creepage trace fluorubber sealing material, raw material include: 100 parts of fluorubber, white carbon black 5- by weight 20 parts, 5-10 parts of nm-class boron nitride, 5-10 parts of nano layered silicate, 10-40 parts of nano-aluminium oxide, aluminium hydroxide 50- 70 parts, 40-80 parts of magnesium hydroxide, 3-7 parts of activated magnesia, 2-4 parts of vulcanizing agent.
A kind of preparation method of anti creepage trace fluorubber sealing material, comprising the following steps:
(1) fluorubber, white carbon black, nm-class boron nitride, nano layered silicate, the oxidation of nanometer three two are weighed by above-mentioned formula Aluminium, aluminium hydroxide, magnesium hydroxide, activated magnesia, vulcanizing agent, it is spare；
(2) by nm-class boron nitride, nano layered silicate, nano-aluminium oxide, aluminium hydroxide, magnesium hydroxide, activity Magnesia pours into mixer, is not pressurized and is kneaded 5-10min, and 25-40 DEG C of melting temperature；
(3) fluorubber is put into mixer, pressurization is kneaded 10-15min, 50-100 DEG C of melting temperature, is kneaded end Back glue is cooled to room temperature；
(4) sizing material is put into open mill, load weighted vulcanizing agent is added in sizing material after packet roller and is mixed, Bao Tong, Slice after beating triangle bag 4-6 obtains anti creepage trace fluorubber sealing material after standing 10 hours.
Anti creepage trace fluorubber sealing material of the invention, uses nm-class boron nitride, nano-aluminium oxide and nanometer The reinforcing effect of phyllosilicate, three kinds of nanoparticles and rubber matrix have good interface cohesion effect, can effectively enhance Thermal stability, electrical erosion resistance and the anti creepage trace performance of fluorubber matrix have the advantages that compared with prior art
1, nm-class boron nitride can be combined well with fluorubber matrix, can be generated arc discharge area after compound Heat is spread out in time, matrix surface temperature is reduced, to enhance the electrical erosion resistance energy of basis material.
2, nano-aluminium oxide improves the heat of fluorubber on the one hand with the physical action of the molecule segment of fluorubber Stability stablizes its compression set property retention, while enhancing the electrical erosion resistance energy of basis material；On the other hand, It can form similar ceramic honeycomb layer on fluorubber surface, cladding matrix surface inhibits in pneumatic ash handling discharge process Destroy further occurrence.
3, nano layered silicate, dosage is few, and the 10%~20% of only common fire proofing aluminium hydroxide, and can be significant Improve the anti creepage trace performance of fluorubber；Its mechanism of action are as follows: on the one hand, nano layered silicate limits fluorubber molecule The movement of chain plays the role of physical crosslinking, also enhances the stability of strand while enhancing fluorubber physical property；Separately On the one hand, it is well combined with fluorubber, there is certain planar orientation and barrier properties for gases, can be effectively reduced fluorubber Mass exchange when degradation is exchanged with heat, to effectively hinder destruction of the electric arc thermal oxidation to fluorubber deep layer.
Specific embodiment
The contents of the present invention are described in further details With reference to embodiment.
Embodiment 1:
A kind of anti creepage trace fluorubber sealing material, raw material include: 100 parts of fluorubber, white carbon black 20 by weight Part, 5 parts of nm-class boron nitride, 40 parts of nano-aluminium oxide, 70 parts of aluminium hydroxide, 40 parts of magnesium hydroxide, 7 parts of activated magnesia, 4 parts of vulcanizing agent.
Wherein, fluorubber Mooney viscosity (ML1+10,121 DEG C) is 50；White carbon black is fume colloidal silica, and specific surface area is 230m2/g；Nm-class boron nitride, specific surface area 40m2/ g, average grain diameter 50nm；Nano-aluminium oxide crystal form is α phase, average Partial size 40nm, 99.99% or more content；Aluminium hydroxide is the active aluminium hydroxide modified through Silane coupling agent KH550 surface, Mesh number is 8000 mesh, 99.6% or more purity；Magnesium hydroxide is the active hydroxide modified through Silane coupling agent KH550 surface Magnesium, mesh number are 800 mesh, 99.5% or more purity；Activated magnesia, crystal form are α phase, specific surface area 30m2/ g, content 99.99% or more；Vulcanizing agent is FL-50 (fluorine connection 50).
Preparation method the following steps are included:
(1) fluorubber, white carbon black, nm-class boron nitride, nano-aluminium oxide, aluminium hydroxide, hydrogen are weighed by above-mentioned formula Magnesia, activated magnesia, FL-50, it is spare；
(2) white carbon black, nm-class boron nitride, nano-aluminium oxide, aluminium hydroxide, magnesium hydroxide, activated magnesia are fallen Enter in mixer, is not pressurized and is kneaded 5min, 40 DEG C of melting temperature；
(3) fluorubber is put into mixer, pressurizes and is kneaded 10min, 100 DEG C of melting temperature；It is kneaded the back glue of end, It is cooled to room temperature；
(4) sizing material is put into open mill, load weighted FL-50 is added in sizing material after packet roller and is mixed, Bao Tong is beaten Slice after triangle bag 6 obtains anti creepage trace fluorubber sealing material after standing 10 hours.
Embodiment 2:
A kind of anti creepage trace fluorubber sealing material, raw material include: 100 parts of fluorubber, white carbon black 10 by weight Part, 5 parts of nm-class boron nitride, 10 parts of nano layered silicate, 50 parts of aluminium hydroxide, 40 parts of magnesium hydroxide, 3 parts of activated magnesia, 3.5 parts of vulcanizing agent.
Wherein, fluorubber Mooney viscosity (ML1+10,121 DEG C) is 41；White carbon black is fume colloidal silica, and specific surface area is 130m2/g；Nm-class boron nitride, specific surface area 50m2/ g, average grain diameter 50nm；Nano layered silicate, main component are nanometers Layered magnesium silicate, volatile matter is 0.5% hereinafter, 99.5% or more purity；Aluminium hydroxide is through Silane coupling agent KH550 surface Modified active aluminium hydroxide, mesh number are 800 mesh, 99.6% or more purity；Magnesium hydroxide is through Silane coupling agent KH550 table The modified active magnesium hydroxide in face, mesh number are 8000 mesh, 99.5% or more purity；Activated magnesia, crystal form are α phase, specific surface Product is 15m2/ g, 99.99% or more content；Vulcanizing agent is FL-50.
Preparation method the following steps are included:
(1) fluorubber, white carbon black, nm-class boron nitride, nano layered silicate, aluminium hydroxide, hydrogen are weighed by above-mentioned formula Magnesia, activated magnesia, FL-50, it is spare；
(2) white carbon black, nm-class boron nitride, nano layered silicate, aluminium hydroxide, magnesium hydroxide, activated magnesia are fallen Enter in mixer, is not pressurized and is kneaded 8min, 25 DEG C of melting temperature；
(3) fluorubber is put into mixer, pressurizes and is kneaded 15min, 50 DEG C of melting temperature；It is kneaded the back glue of end, It is cooled to room temperature；
(4) sizing material is put into open mill, load weighted FL-50 is added in sizing material after packet roller and is mixed, Bao Tong is beaten Slice after triangle bag 4 obtains anti creepage trace EPT rubber packing material after standing 10 hours.
Embodiment 3:
A kind of anti creepage trace fluorubber sealing material, raw material include: 100 parts of fluorubber, white carbon black 5 by weight Part, 5 parts of nano layered silicate, 10 parts of nano-aluminium oxide, 40 parts of aluminium hydroxide, 80 parts of magnesium hydroxide, activated magnesia 4 Part, 2 parts of vulcanizing agent.
Wherein, fluorubber Mooney viscosity (ML1+10,121 DEG C) is 60；White carbon black is fume colloidal silica, and specific surface area is 180m2/g；Nano layered silicate, main component are nano lamellar magnesium silicates, and volatile matter is 0.5% hereinafter, purity 99.5% More than；Nano-aluminium oxide crystal form is α phase, partial size 20nm, 99.99% or more content；Aluminium hydroxide is through silane coupling agent The modified active aluminium hydroxide in the surface KH550, mesh number are 5000 mesh, 99.6% or more purity；Magnesium hydroxide is through silane coupled The modified active magnesium hydroxide in the surface agent KH550, mesh number are 8000 mesh, 99.5% or more purity；Activated magnesia, crystal form α Phase, specific surface area 25m2/ g, 99.99% or more content；Vulcanizing agent is FL-50.
Preparation method the following steps are included:
(1) fluorubber, white carbon black, nano layered silicate, nano-aluminium oxide, hydroxide are weighed by above-mentioned formula Aluminium, magnesium hydroxide, activated magnesia, FL-50, it is spare；
(2) by white carbon black, nano layered silicate, nano-aluminium oxide, aluminium hydroxide, magnesium hydroxide, active oxidation Magnesium pours into mixer, is not pressurized and is kneaded 8min, and 35 DEG C of melting temperature；
(3) fluorubber is put into mixer, pressurizes and is kneaded 12min, 80 DEG C of melting temperature；It is kneaded the back glue of end, It is cooled to room temperature；
(4) sizing material is put into open mill, load weighted FL-50 is added in sizing material after packet roller and is mixed, Bao Tong is beaten Slice after triangle bag 5 obtains anti creepage trace EPT rubber packing material after standing 10 hours.
Embodiment 4:
A kind of anti creepage trace fluorubber sealing material, raw material include: 100 parts of fluorubber, white carbon black 5 by weight Part, 10 parts of nm-class boron nitride, 8 parts of nano layered silicate, 30 parts of nano-aluminium oxide, 50 parts of aluminium hydroxide, magnesium hydroxide 55 parts, 5 parts of activated magnesia, 3.5 parts of vulcanizing agent.
Wherein, fluorubber Mooney viscosity (ML1+10,121 DEG C) is 65；White carbon black is fume colloidal silica, and specific surface area is 150m2/g；Nm-class boron nitride, specific surface area 45m2/ g, average grain diameter 50nm；Nano layered silicate, main component are nanometers Layered magnesium silicate, volatile matter is 0.5% hereinafter, 99.5% or more purity；Nano-aluminium oxide crystal form be α phase, partial size 30nm, 99.99% or more content；Aluminium hydroxide is the active aluminium hydroxide modified through Silane coupling agent KH550 surface, mesh number 8000 Mesh, 99.6% or more purity；Magnesium hydroxide, is the active magnesium hydroxide modified through Silane coupling agent KH550 surface, and mesh number is 5000 mesh, 99.5% or more purity；Activated magnesia, crystal form are α phase, specific surface area 25m2/ g, 99.99% or more content； Vulcanizing agent is FL-50.
Preparation method the following steps are included:
(1) fluorubber, white carbon black, nm-class boron nitride, nano layered silicate, the oxidation of nanometer three two are weighed by above-mentioned formula Aluminium, aluminium hydroxide, magnesium hydroxide, activated magnesia, FL-50, it is spare；
(2) by white carbon black, nm-class boron nitride, nano layered silicate, nano-aluminium oxide, aluminium hydroxide, hydroxide Magnesium, activated magnesia pour into mixer, are not pressurized and are kneaded 8min, and 30 DEG C of melting temperature；
(3) fluorubber is put into mixer, pressurizes and is kneaded 12min, 80 DEG C of melting temperature；It is kneaded the back glue of end, It is cooled to room temperature；
(4) sizing material is put into open mill, load weighted FL-50 is added in sizing material after packet roller and is mixed, Bao Tong is beaten Slice after triangle bag 6 obtains anti creepage trace EPT rubber packing material after standing 10 hours.
Performance measurement is carried out for the material in embodiment 1, embodiment 2, embodiment 3 and embodiment 4, measured data are such as Shown in table 1.
1 anti creepage trace fluorubber seal member material properties test result of table
From the point of view of the test result of table 1, the accelerated aging test of Examples 1 to 4 resulting materials can lead to 1A3.5 is crossed, while the key performance compression set numerical value for influencing sealing is respectively less than 15%, can satisfy valve cooling system completely The seal request of middle cooling water.
Simply to illustrate that technical concepts and features of the invention, its purpose is allows in the art above-described embodiment Those of ordinary skill cans understand the content of the present invention and implement it accordingly, and it is not intended to limit the scope of the present invention.It is all It is the equivalent changes or modifications that the essence of content according to the present invention is made, should be covered by the scope of protection of the present invention.

Claims (10)

1. a kind of anti creepage trace fluorubber sealing material, it is characterised in that: its raw material include: by weight 100 parts of fluorubber, 5-20 parts of white carbon black, 5-10 parts of nm-class boron nitride, 5-10 parts of nano layered silicate, 10-40 parts of nano-aluminium oxide, hydrogen-oxygen Change aluminium 50-70 parts, 40-80 parts of magnesium hydroxide, 3-7 parts of activated magnesia, 2-4 parts of vulcanizing agent.
2. a kind of anti creepage trace fluorubber sealing material according to claim 1, it is characterised in that: the fluorubber door Buddhist nun's viscosity (ML1+10,121 DEG C) is 41-65.
3. a kind of anti creepage trace fluorubber sealing material according to claim 1, it is characterised in that: the white carbon black is Fume colloidal silica, specific surface area 130-230m2/g。
4. a kind of anti creepage trace fluorubber sealing material according to claim 1, it is characterised in that: the nano silicon nitride Boron, specific surface area 40-50m2/ g, average grain diameter 50nm, 99.9% or more purity.
5. a kind of anti creepage trace fluorubber sealing material according to claim 1, it is characterised in that: the nano lamellar Silicate, main component are nano lamellar magnesium silicates, and volatile matter 0.5% is hereinafter, 99.5% or more purity.
6. modified polytetrafluoroethylresin resin according to claim 1, which is characterized in that the nano-aluminium oxide, it is brilliant Type is α phase, partial size 20-40nm, 99.99% or more content.
7. a kind of anti creepage trace fluorubber sealing material according to claim 1, it is characterised in that: the hydroxide Aluminium is through silane coupling agent, titanate coupling agent, aluminate coupling agent, phosphate coupling agent or boric acid ester coupler surface Modified active aluminium hydroxide, mesh number are 800-8000 mesh, 99.6% or more purity.
8. a kind of anti creepage trace fluorubber sealing material according to claim 1, it is characterised in that: the hydroxide Magnesium is through silane coupling agent, titanate coupling agent, aluminate coupling agent, phosphate coupling agent or boric acid ester coupler surface Modified active magnesium hydroxide, mesh number are 800-8000 mesh, 99.5% or more purity.
9. a kind of anti creepage trace fluorubber sealing material according to claim 1, it is characterised in that: the active oxidation Magnesium, crystal form are α phase, specific surface area 15-30m2/ g, 99.99% or more content.
10. a kind of preparation method of anti creepage trace fluorubber sealing material, it is characterised in that: the following steps are included:
(1) fluorubber, white carbon black, nm-class boron nitride, nano layered silicate, nanometer three are weighed by formula described in claim 1 Al 2 O, aluminium hydroxide, magnesium hydroxide, activated magnesia, vulcanizing agent, it is spare；
(2) by nm-class boron nitride, nano layered silicate, nano-aluminium oxide, aluminium hydroxide, magnesium hydroxide, active oxidation Magnesium pours into mixer, is not pressurized and is kneaded 5-10min, and 25-40 DEG C of melting temperature；
(3) fluorubber is put into mixer, pressurization is kneaded 10-15min, 50-100 DEG C of melting temperature, is kneaded the heel row of end Glue is cooled to room temperature；
(4) sizing material is put into open mill, load weighted vulcanizing agent is added in sizing material after packet roller and is mixed, Bao Tong makes a call to three Slice after angle wraps 4-6 obtains anti creepage trace fluorubber sealing material after standing 10 hours.
CN201910515549.7A 2019-06-14 2019-06-14 A kind of anti creepage trace fluorubber sealing material and preparation method thereof Pending CN110283409A (en)

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CN107141664A (en) * 2017-07-04 2017-09-08 合肥择浚电气设备有限公司 A kind of Novel combined insulator material and preparation method thereof

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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Application publication date: 20190927