CN106398063A - Carbon nanotube-polytetrafluoroethylene valve sealing ring filled with bronze powder - Google Patents
Carbon nanotube-polytetrafluoroethylene valve sealing ring filled with bronze powder Download PDFInfo
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- CN106398063A CN106398063A CN201610437318.5A CN201610437318A CN106398063A CN 106398063 A CN106398063 A CN 106398063A CN 201610437318 A CN201610437318 A CN 201610437318A CN 106398063 A CN106398063 A CN 106398063A
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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
- C08K13/06—Pretreated ingredients and ingredients covered by the main groups C08K3/00 - C08K7/00
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
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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
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/08—Oxygen-containing compounds
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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
- C08K7/00—Use of ingredients characterised by shape
- C08K7/22—Expanded, porous or hollow particles
- C08K7/24—Expanded, porous or hollow particles inorganic
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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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
- C08K9/00—Use of pretreated ingredients
- C08K9/08—Ingredients agglomerated by treatment with a binding agent
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/085—Copper
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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
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
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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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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- C—CHEMISTRY; METALLURGY
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
Abstract
The invention discloses a carbon nanotube-polytetrafluoroethylene valve sealing ring filled with bronze powder. The carbon nanotube-polytetrafluoroethylene valve sealing ring is prepared from the following components by weight: 100 parts of polytetrafluoroethylene, 5 to 8 parts of carbon nanotubes, 8 to 10 parts of phenol, 8 to 10 parts of p-toluylic acid, 1 to 2 parts of bentonite, 5 to 8 parts of diphenyl ether, 1 to 3 parts of butyl titanate, 20 to 25 parts of sodium hypochlorite with a concentration of 60 to 70%, 20 to 25 parts of EDTA, 40 to 50 parts of ammonia water, 80 to 100 parts of absolute ethyl alcohol, 2 to 4 parts of tetrapod-like zinc oxide whisker, 4 to 5 parts of bronze powder, 1 to 3 parts of graphite, 1 to 2 parts of molybdenum disulfide, 1 to 3 parts of a silane coupling agent KH550, 9 to 10 parts of ammonium chloride, 30 to 35 parts of urea and 30 to 35 parts of water. The sealing ring prepared in the invention has the characteristics of good burning resistance, heat resistance and non-stick properties, and has high heat stability and resilience and in particular, a stable friction coefficient and high anti-compression performance.
Description
Technical field
The invention belongs to valve sealing ring field and in particular to a kind of bronze powder filling teflon valve sealing ring
And preparation method and application.
Background technology
Politef（PTFE）With the chemical stability of its height, extremely strong high- and low-temperature resistance performance, prominent does not glue
Property, good lubricity, excellent electrical insulating property, resistance to ag(e)ing, minimum water absorption etc. is so as in Aero-Space, oil
The fields such as work, mechanical industry, electronic apparatus, food industry, weaving have a wide range of applications. but also because it has mechanical performance relatively
Difference, linear expansion coefficient is big, and creep resistant is poor, and mar proof is poor, and hardness is low, and the defect such as molding and secondary operations difficulty is so as to answer
It is subject to certain restrictions with scope.In order to improve and overcoming the defect of pure PTFE, frequently with surface modification, filling-modified and blending
The means such as modification improving its combination property, wherein especially with filling-modified the simplest, price is low, effect is good and generally adopted
With.
Patent No. CN103627119A discloses a kind of Polytetrafluoroethyldamper damper pad, by following components group by weight
Become：100 parts of politef, glass fibre 20-30 part, four acicular type zinc oxide crystal whisker 4-8 part, bronze powder 2-4 part, graphite 1-3
Part.This Polytetrafluoroethyldamper damper pad has the characteristics that good resistance to combustion, heatproof, non-stickiness, and heat stability is strong and resilience
High.
The present invention, using the PTFE Filled with Carbon Fiber modified with bronze powder, graphite and polybenzoate, prepares
Carbon nanometer-teflon valve the sealing ring of bronze powder filling, has the characteristics that good resistance to combustion, heatproof, non-stickiness, and heat is steady
Qualitative strong and resilience is high, especially has stable coefficient of friction and compared with high pressure resistance energy.
Content of the invention
The primary and foremost purpose of the present invention is to provide a kind of carbon nanometer-teflon valve sealing ring of bronze powder filling,
This carbon nanometer-teflon valve sealing ring has the characteristics that good resistance to combustion, heatproof, non-stickiness, and heat stability is strong and returns
Elasticity is high.
Another object of the present invention is to providing above-mentioned heat stability strong and resilience high-carbon nanometer-teflon valve
The preparation method of sealing ring.
A kind of carbon nanometer-teflon valve sealing ring of bronze powder filling is it is characterised in that described valve sealing ring
It is prepared from by the component of following weight portion：100 parts of politef, CNT 5-8 part, phenol 8-10 part, to methylbenzene
Formic acid 8-10 part, bentonite 1-2 part, diphenyl ether 5-8 part, butyl titanate 1-3 part, 60-70% sodium hypochlorite 20-25 part, EDTA
20-25 part, ammonia 40-50 part, dehydrated alcohol 80-100 part, four acicular type zinc oxide crystal whisker 2-4 part, bronze powder 4-5 part, graphite 1-
3 parts, molybdenum bisuphide 1-2 part, silane coupler kh550 1-3 part, ammonium chloride 9-10 part, carbamide 30-35 part, water 30-35 part.
A kind of carbon nanometer-teflon valve sealing ring of bronze powder filling is it is characterised in that described valve sealing ring
It is prepared from by following steps：
（1）CNT activation
The oxidation modification of A CNT
First molybdenum bisuphide is dispersed in 60-70% liquor natrii hypochloritises, adds CNT stirring 10-12h, sucking filtration, filter cake
Put into ultrasonic 20-30min in dehydrated alcohol, 50-60 DEG C be vacuum dried 20-30h, the CNT to oxidation modification；
The activation of B CNT
The CNT of EDTA and oxidation modification is dispersed in ammonia, 50-70 DEG C, PH is ultrasonic 1-3h under the conditions of 5-7, standing
1-2h, filters, and filter cake is immersed in ultrasonic 1-3h in the mixed liquor of ammonium chloride, carbamide, water, stands 1-2h, filters, and 50-60 DEG C true
Sky is dried 20-30h, to Activated Carbon Nanotubes；
（2）Polybenzoate is carbon nano-tube modified
Activated Carbon Nanotubes, phenol, P-hydroxybenzoic acid are added ultrasonic disperse 1-3h in diphenyl ether, adds catalyst metatitanic acid
Butyl ester, 70-90 DEG C of esterification 8-10h, add bentonite, ultrasonic disperse 0.5-1h, improve reaction temperature and contracted to 180-200 DEG C
Poly-, polycondensation 20-30h, obtain polybenzoate carbon nano-tube modified.
（3）The preparation of carbon nanometer-teflon valve sealing ring
First carry out ball milling by carbon nano-tube modified for polybenzoate, after ball milling polybenzoate carbon nano-tube modified with polytetrafluoroethylpowder powder,
After four acicular type zinc oxide crystal whisker, bronze powder, graphite mix, then silane coupler kh550 is sprayed wherein, at 40～100 DEG C
Lower drying, the mixed material that will be dried is molded in 20～60MPa chill, compression rate 5-10MPa/min pressurize 1～
30min；Again the product of molding is sintered, is cooled to room temperature, that is, the carbon obtaining the bronze powder filling prepared by the present invention is received
Rice-teflon valve sealing ring.
Described polyflon is suspension injecting tetrafluoroethylene resin, and its particle diameter distribution is 15～60 μm；Described four pins
Shape ZnOw, bronze powder, graphite, molybdenum bisuphide, bentonitic particle diameter are 10～50 μm；After ball milling, polybenzoate modified carbon is received
The particle diameter of mitron is 10-50 μm.
Compared to other teflon valve sealing rings, the carbon nanometer-poly- four of the bronze powder filling that the present invention provides
Fluorothene valve sealing ring has the characteristics that good resistance to combustion, heatproof, non-stickiness, and heat stability is strong and resilience is high, especially has
There is stable coefficient of friction and compared with high pressure resistance energy.
Specific embodiment
A kind of carbon nanometer-teflon valve sealing ring of bronze powder filling is it is characterised in that described valve sealing ring
It is prepared from by the component of following weight portion：100 parts of politef, 5 parts of CNT, 10 parts of phenol, p-methylbenzoic acid 8
Part, 1 part of bentonite, 5 parts of diphenyl ether, 1 part of butyl titanate, 20 parts of 60-70% sodium hypochlorite, 25 parts of EDTA, 50 parts of ammonia, anhydrous
100 parts of ethanol, 4 parts of four acicular type zinc oxide crystal whisker, 5 parts of bronze powder, 3 parts of graphite, 2 parts of molybdenum bisuphide, silane coupler kh550 3
Part, 9 parts of ammonium chloride, 35 parts of carbamide, 35 parts of water.
A kind of carbon nanometer-teflon valve sealing ring of bronze powder filling, is prepared from by following steps：
（1）CNT activation
The oxidation modification of A CNT
First molybdenum bisuphide is dispersed in 60% liquor natrii hypochloritises, adds CNT stirring 12h, sucking filtration, filter cake is put into no
Ultrasonic 30min in water-ethanol, 60 DEG C be vacuum dried 20h, the CNT to oxidation modification；
The activation of B CNT
The CNT of EDTA and oxidation modification is dispersed in ammonia, 50 DEG C, PH is ultrasonic 1h under the conditions of 5, stands 2h, mistake
Filter, filter cake is immersed in ultrasonic 2h in the mixed liquor of ammonium chloride, carbamide, water, stands 2h, filters, 60 DEG C of vacuum drying 30h, arrive
Activated Carbon Nanotubes；
（2）Polybenzoate is carbon nano-tube modified
Activated Carbon Nanotubes, phenol, P-hydroxybenzoic acid are added ultrasonic disperse 3h in diphenyl ether, adds catalyst metatitanic acid fourth
Ester, 90 DEG C of esterification 8h, add bentonite, ultrasonic disperse 1h, improve reaction temperature to 200 DEG C and carry out polycondensation, polycondensation 20h, obtain
Polybenzoate is carbon nano-tube modified.
（3）The preparation of carbon nanometer-teflon valve sealing ring
First carry out ball milling by carbon nano-tube modified for polybenzoate, after ball milling polybenzoate carbon nano-tube modified with polytetrafluoroethylpowder powder,
After four acicular type zinc oxide crystal whisker, bronze powder, graphite mix, then silane coupler kh550 is sprayed wherein, dry at 100 DEG C
Dry, the mixed material that will be dried is molded in 60MPa chill, compression rate 5MPa/min pressurize 30min；Again by the product of molding
Product are sintered, and are cooled to room temperature, that is, obtain the carbon nanometer-teflon valve sealing ring of bronze powder filling.
After tested：Draw high intensity 27MPa；Elongation at break 210%；Impact strength 20.5KJ/m；Bending strength 27MPa；Mill
Consumption 4.0mm3（Load 250N, linear velocity 2m/s, 3 minutes time）.
The above, the only specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, and any
Those of ordinary skill in the art disclosed herein technical scope in, the change that can expect without creative work or
Replace, all should be included within the scope of the present invention.Therefore, protection scope of the present invention should be limited with claims
Fixed protection domain is defined.
Claims (3)
1. a kind of filling of bronze powder carbon nanometer-teflon valve sealing ring it is characterised in that described valve sealing ring by
The component of following weight portion is prepared from：100 parts of politef, CNT 5-8 part, phenol 8-10 part, to methylbenzene first
Sour 8-10 part, bentonite 1-2 part, diphenyl ether 5-8 part, butyl titanate 1-3 part, 60-70% sodium hypochlorite 20-25 part, EDTA 20-
25 parts, ammonia 40-50 part, dehydrated alcohol 80-100 part, four acicular type zinc oxide crystal whisker 2-4 part, bronze powder 4-5 part, graphite 1-3
Part, molybdenum bisuphide 1-2 part, silane coupler kh550 1-3 part, ammonium chloride 9-10 part, carbamide 30-35 part, water 30-35 part.
2. a kind of filling of bronze powder carbon nanometer-teflon valve sealing ring it is characterised in that described valve sealing ring by
Following steps are prepared from：
CNT activation
The oxidation modification of A CNT
First molybdenum bisuphide is dispersed in 60-70% liquor natrii hypochloritises, adds CNT stirring 10-12h, sucking filtration, filter cake
Put into ultrasonic 20-30min in dehydrated alcohol, 50-60 DEG C be vacuum dried 20-30h, the CNT to oxidation modification；
The activation of B CNT
The CNT of EDTA and oxidation modification is dispersed in ammonia, 50-70 DEG C, PH is ultrasonic 1-3h under the conditions of 5-7, standing
1-2h, filters, and filter cake is immersed in ultrasonic 1-3h in the mixed liquor of ammonium chloride, carbamide, water, stands 1-2h, filters, and 50-60 DEG C true
Sky is dried 20-30h, to Activated Carbon Nanotubes；
Polybenzoate is carbon nano-tube modified
Activated Carbon Nanotubes, phenol, P-hydroxybenzoic acid are added ultrasonic disperse 1-3h in diphenyl ether, adds catalyst metatitanic acid
Butyl ester, 70-90 DEG C of esterification 8-10h, add bentonite, ultrasonic disperse 0.5-1h, improve reaction temperature and contracted to 180-200 DEG C
Poly-, polycondensation 20-30h, obtain polybenzoate carbon nano-tube modified；
The preparation of carbon nanometer-teflon valve sealing ring
First carry out ball milling by carbon nano-tube modified for polybenzoate, after ball milling polybenzoate carbon nano-tube modified with polytetrafluoroethylpowder powder,
After four acicular type zinc oxide crystal whisker, bronze powder, graphite mix, then silane coupler kh550 is sprayed wherein, at 40～100 DEG C
Lower drying, the mixed material that will be dried is molded in 20～60MPa chill, compression rate 5-10MPa/min pressurize 1～
30min；Again the product of molding is sintered, is cooled to room temperature, that is, the carbon obtaining the bronze powder filling prepared by the present invention is received
Rice-teflon valve sealing ring.
3. a kind of carbon nanometer-teflon valve sealing ring of bronze powder filling is it is characterised in that described politef tree
Fat is suspension injecting tetrafluoroethylene resin, and its particle diameter distribution is 15～60 μm；Described four acicular type zinc oxide crystal whisker, bronze powder, graphite,
Molybdenum bisuphide, bentonitic particle diameter are 10～50 μm；After ball milling, the carbon nano-tube modified particle diameter of polybenzoate is 10-50 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610437318.5A CN106398063A (en) | 2016-06-20 | 2016-06-20 | Carbon nanotube-polytetrafluoroethylene valve sealing ring filled with bronze powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610437318.5A CN106398063A (en) | 2016-06-20 | 2016-06-20 | Carbon nanotube-polytetrafluoroethylene valve sealing ring filled with bronze powder |
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| Publication Number | Publication Date |
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| CN106398063A true CN106398063A (en) | 2017-02-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610437318.5A Pending CN106398063A (en) | 2016-06-20 | 2016-06-20 | Carbon nanotube-polytetrafluoroethylene valve sealing ring filled with bronze powder |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111073186A (en) * | 2019-12-20 | 2020-04-28 | 浙江巨化技术中心有限公司 | Polytetrafluoroethylene composite material for packing and method for preparing packing by using same |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102174248A (en) * | 2011-03-28 | 2011-09-07 | 上海交通大学 | Method for preparing carbon nanotube/polybenzoate composite |
| CN102952360A (en) * | 2012-11-06 | 2013-03-06 | 浙江国威汽车配件有限公司 | Fluorine-containing polymer mixing material and method for preparing bulb buffer ball keyway by same |
| CN103571114A (en) * | 2012-07-22 | 2014-02-12 | 上海利隆化工化纤有限公司 | Polytetrafluoroethylene piston sealing ring and preparation method thereof |
-
2016
- 2016-06-20 CN CN201610437318.5A patent/CN106398063A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102174248A (en) * | 2011-03-28 | 2011-09-07 | 上海交通大学 | Method for preparing carbon nanotube/polybenzoate composite |
| CN103571114A (en) * | 2012-07-22 | 2014-02-12 | 上海利隆化工化纤有限公司 | Polytetrafluoroethylene piston sealing ring and preparation method thereof |
| CN102952360A (en) * | 2012-11-06 | 2013-03-06 | 浙江国威汽车配件有限公司 | Fluorine-containing polymer mixing material and method for preparing bulb buffer ball keyway by same |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111073186A (en) * | 2019-12-20 | 2020-04-28 | 浙江巨化技术中心有限公司 | Polytetrafluoroethylene composite material for packing and method for preparing packing by using same |
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