CN106084584A - A kind of corrosion resistant carbon nanotube/polytetrafluoroethylcomposite chemical pumping valve sealing ring - Google Patents
A kind of corrosion resistant carbon nanotube/polytetrafluoroethylcomposite chemical pumping valve sealing ring Download PDFInfo
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- CN106084584A CN106084584A CN201610437374.9A CN201610437374A CN106084584A CN 106084584 A CN106084584 A CN 106084584A CN 201610437374 A CN201610437374 A CN 201610437374A CN 106084584 A CN106084584 A CN 106084584A
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- sealing ring
- politef
- valve sealing
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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
- C08K3/30—Sulfur-, selenium- or tellurium-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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/346—Clay
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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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- 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
- C08K9/02—Ingredients treated with inorganic substances
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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
- C08K9/04—Ingredients treated with organic substances
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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
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3045—Sulfates
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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
Abstract
The invention discloses a kind of corrosion resistant carbon nanotube/polytetrafluoroethylcomposite chemical pump valve sealing ring, it is prepared from by the component of following weight portion: politef 100 parts, CNT 58 parts, dimethyl terephthalate (DMT) 56 parts, ethylene glycol 23 parts, 1, 2 propylene glycol 23 parts, bentonite 12 parts, diphenyl ether 58 parts, antimony glycol 13 parts, 60 70% sodium hypochlorite 20 25 parts, EDTA 20 25 parts, ammonia 40 50 parts, dehydrated alcohol 80 100 parts, 35 parts of barium sulfate, molybdenum bisuphide 12 parts, silane coupler kh550 13 parts, ammonium chloride 9 10 parts, 30 35 parts of carbamide, 30 35 parts of water.Corrosion resistant carbon nanotube/polytetrafluoroethylcomposite chemical pump valve sealing ring disclosed by the invention, water-fast, resistance to chemical attack, service life are long.
Description
Technical field
The invention belongs to chemical pumping valve sealing ring field, be specifically related to a kind of corrosion resistant carbon nanometer-polytetrafluoroethyl-ne
Alkene chemical pumping valve sealing ring and preparation method and application.
Background technology
Chemical pumping i.e. carries the pump of chemical substance, and usual chemical substance has certain Acidity of Aikalinity, and the chemistry pump housing is had one
Fixed corrosivity, especially sealing ring.Therefore a kind of corrosion resistant chemical seal circle need to be found to replace existing sealing ring.
Polytetrafluoroethylene (PTFE) is with the chemical stability of its height, and extremely strong high-and low-temperature resistance performance, prominent does not glues
Property, good lubricity, the electrical insulating property of excellence, resistance to ag(e)ing, minimum water absorption etc. so that it is at 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 exists mechanical performance relatively
Difference, linear expansion coefficient is big, and creep resistant is poor, and mar proof is poor, and hardness is low, molding and the defect such as secondary operations is difficult so that it is answer
It is subject to certain restrictions by scope.In order to improve and overcome the defect of pure PTFE, frequently with surface modification, filling-modified and blended
The means such as modified improve its combination property, the most especially with filling-modified the simplest, price is low, effective and is generally adopted
With.
Patent No. CN1386792A the invention discloses a kind of PTFE anti-wear composite material containing CNT.
By volume percentage ratio, CNT content in the composite is 1%～40%.CNT reinforced TFE composite wood
Although material increases for anti-wear performance, but anti-wear performance is not the most the highest, and intensity and hardness are the lowest, and not corrosion resistant
Erosion.The present invention first prepares surface inactive CNT, then prepares carbon nanometer-politef chemistry pump valve sealing ring,
It not only has higher corrosion-resistant, and intensity is high, good toughness.
Summary of the invention
The primary and foremost purpose of the present invention is to provide a kind of corrosion resistant carbon nanometer-politef chemistry pump valve seal
Circle, this carbon nanometer-politef chemistry pump is strong by valve sealing ring corrosion resistance, service life is long.
Another object of the present invention is to provide above-mentioned creep carbon nanometer corrosion-resistant, low-politef chemistry pump valve
The preparation method of sealing ring.
A kind of corrosion resistant carbon nanometer-politef chemical industry pump valve sealing ring, it is characterised in that described chemical pump
It is prepared from by the component of following weight portion with valve sealing ring: politef 100 parts, CNT 5-8 part, terephthaldehyde
Dimethyl phthalate 5-6 part, ethylene glycol 2-3 part, 1,2-propylene glycol 2-3 part, bentonite 1-2 part, diphenyl ether 5-8 part, antimony glycol 1-3
Part, 60-70% sodium hypochlorite 20-25 part, EDTA 20-25 part, ammonia 40-50 part, dehydrated alcohol 80-100 part, barium sulfate 3-5
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.
A kind of corrosion resistant carbon nanometer-politef chemical industry pump valve sealing ring, it is characterised in that its preparation method
Comprise the steps:
(1) CNT activation
The oxidation modification of A CNT
First molybdenum bisuphide is dispersed in 60-70% liquor natrii hypochloritis, 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
Being dispersed in ammonia by the CNT of EDTA and oxidation modification, 50-70 DEG C, PH is ultrasonic 1-3h under the conditions of 5-7, stands
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
Empty be dried 20-30h, to Activated Carbon Nanotubes；
(2) carbon nano tube surface deactivation processes
Activated Carbon Nanotubes, dimethyl terephthalate (DMT), ethylene glycol, 1,2-propylene glycol are added ultrasonic disperse 1-in diphenyl ether
3h, is adding catalyst glycol antimony, and 180-200 DEG C carries out cross-linking polycondensation, cross-link polycondensation 20-30h, obtain surface inactive carbon
Nanotube.
(3) preparation of carbon nanometer-politef chemical industry pump valve sealing ring
First surface inactive CNT is carried out ball milling, the inert CNT in ball milling rear surface and polytetrafluoroethylpowder powder,
After the mixing of barium sulfate, bentonite, then silane coupler kh550 is sprayed at wherein, is dried at 40～100 DEG C, by dry
Mixing raw material is in 20～60MPa cold forming molding, compression rate 5-10MPa/min pressurize 1～30min；Again by the product of molding
Product are sintered, and are cooled to room temperature, i.e. obtain the corrosion resistant carbon nanometer-politef chemical industry pump valve prepared by the present invention
Door sealing circle.
Described polyflon is suspension injecting tetrafluoroethylene resin, and its particle diameter is distributed as 15～60 μm；Described sulphuric acid
Barium, molybdenum bisuphide, bentonitic particle diameter are 10～50 μm；The particle diameter of the inert CNT in ball milling rear surface is 10-50 μm.
Compared to other teflon valve sealing ring, the corrosion resistant politef chemistry pump that the present invention provides
Valve sealing ring, has good anti-extrusion deformation ability, outstanding decay resistance, well installs back elasticity, uses the longevity
Life can be greatly improved.
Detailed description of the invention
A kind of corrosion resistant carbon nanometer-politef chemical industry pump valve sealing ring, by the component system of following weight portion
For forming: politef 100 parts, CNT 5 parts, dimethyl terephthalate (DMT) 5 parts, ethylene glycol 2 parts, 1,2-propylene glycol 2
Part, bentonite 2 parts, diphenyl ether 8 parts, antimony glycol 3 parts, 60-70% sodium hypochlorite 25 parts, EDTA 20 parts, ammonia 50 parts, anhydrous
Ethanol 100 parts, 3 parts of barium sulfate, molybdenum bisuphide 2 parts, silane coupler kh550 3 parts, ammonium chloride 9 parts, 35 parts of carbamide, water 35
Part.
A kind of corrosion resistant carbon nanometer-politef chemical industry pump valve sealing ring, is prepared by following steps:
(1) CNT activation
The oxidation modification of A CNT
First being dispersed in 60% liquor natrii hypochloritis by molybdenum bisuphide, add CNT stirring 12h, sucking filtration, nothing put into by filter cake
Ultrasonic 30min in water-ethanol, 60 DEG C be vacuum dried 30h, the CNT to oxidation modification；
The activation of B CNT
Being dispersed in ammonia by the CNT of EDTA and oxidation modification, 70 DEG C, PH is ultrasonic 2h under the conditions of 7, 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) carbon nano tube surface deactivation processes
Activated Carbon Nanotubes, dimethyl terephthalate (DMT), ethylene glycol, 1,2-PD are added ultrasonic disperse 3h in diphenyl ether,
Adding catalyst glycol antimony, 200 DEG C carry out cross-linking polycondensation, cross-link polycondensation 20h, obtain surface inactive CNT.
(3) preparation of carbon nanometer-politef chemical industry pump valve sealing ring
First surface inactive CNT is carried out ball milling, the inert CNT in ball milling rear surface and polytetrafluoroethylpowder powder,
After the mixing of barium sulfate, bentonite, then silane coupler kh550 is sprayed at wherein, is dried at 80 DEG C, by former for dry mixing
Material is at 50MPa cold forming molding, compression rate 5MPa/min pressurize 30min；Again the product of molding is sintered, is cooled to
Room temperature, i.e. obtains corrosion resistant carbon nanometer-politef chemical industry pump valve sealing ring.
After tested: draw high intensity 28MPa；Elongation at break 220%；Impact strength 22.5KJ/m；Bending strength 28MPa；Mill
Consumption 4.2mm3(load 250N, linear velocity 2m/s, 3 minutes time).
The above, the only detailed description of the invention of the present invention, but protection scope of the present invention is not limited thereto, and any
Those of ordinary skill in the art in the technical scope that disclosed herein, the change that can expect without creative work or
Replace, all should contain within protection scope of the present invention.Therefore, protection scope of the present invention should be limited with claims
Fixed protection domain is as the criterion.
Claims (3)
1. corrosion resistant carbon nanometer-politef chemical industry pump valve sealing ring, it is characterised in that described chemical pump is used
Valve sealing ring is prepared from by the component of following weight portion: politef 100 parts, CNT 5-8 part, p-phthalic acid
Dimethyl ester 5-6 part, ethylene glycol 2-3 part, 1,2-propylene glycol 2-3 part, bentonite 1-2 part, diphenyl ether 5-8 part, antimony glycol 1-3
Part, 60-70% sodium hypochlorite 20-25 part, EDTA 20-25 part, ammonia 40-50 part, dehydrated alcohol 80-100 part, barium sulfate 3-5
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. corrosion resistant carbon nanometer-politef chemical industry pump valve sealing ring, it is characterised in that its preparation method bag
Include following steps:
CNT activation
The oxidation modification of A CNT
First molybdenum bisuphide is dispersed in 60-70% liquor natrii hypochloritis, 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
Being dispersed in ammonia by the CNT of EDTA and oxidation modification, 50-70 DEG C, PH is ultrasonic 1-3h under the conditions of 5-7, stands
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
Empty be dried 20-30h, to Activated Carbon Nanotubes；
Carbon nano tube surface deactivation processes
Activated Carbon Nanotubes, dimethyl terephthalate (DMT), ethylene glycol, 1,2-propylene glycol are added ultrasonic disperse 1-in diphenyl ether
3h, is adding catalyst glycol antimony, and 180-200 DEG C carries out cross-linking polycondensation, cross-link polycondensation 20-30h, obtain surface inactive carbon
Nanotube；
The preparation of carbon nanometer-politef chemical industry pump valve sealing ring
First surface inactive CNT is carried out ball milling, the inert CNT in ball milling rear surface and polytetrafluoroethylpowder powder,
After the mixing of barium sulfate, bentonite, then silane coupler kh550 is sprayed at wherein, is dried at 40～100 DEG C, by dry
Mixing raw material is in 20～60MPa cold forming molding, compression rate 5-10MPa/min pressurize 1～30min；Again by the product of molding
Product are sintered, and are cooled to room temperature, i.e. obtain the corrosion resistant carbon nanometer-politef chemical industry pump valve prepared by the present invention
Door sealing circle.
3. corrosion resistant carbon nanometer-politef chemical industry pump valve sealing ring, it is characterised in that described polytetrafluoroethyl-ne
Olefine resin is suspension injecting tetrafluoroethylene resin, and its particle diameter is distributed as 15～60 μm；Described barium sulfate, molybdenum bisuphide, bentonitic
Particle diameter is 10～50 μm；The particle diameter of the inert CNT in ball milling rear surface is 10-50 μm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610437374.9A CN106084584A (en) | 2016-06-20 | 2016-06-20 | A kind of corrosion resistant carbon nanotube/polytetrafluoroethylcomposite chemical pumping valve sealing ring |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610437374.9A CN106084584A (en) | 2016-06-20 | 2016-06-20 | A kind of corrosion resistant carbon nanotube/polytetrafluoroethylcomposite chemical pumping valve sealing ring |
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| CN106084584A true CN106084584A (en) | 2016-11-09 |
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| CN201610437374.9A Withdrawn CN106084584A (en) | 2016-06-20 | 2016-06-20 | A kind of corrosion resistant carbon nanotube/polytetrafluoroethylcomposite chemical pumping valve sealing ring |
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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 |
| CN103435947A (en) * | 2013-08-30 | 2013-12-11 | 广州机械科学研究院有限公司 | Wear-resistant low-creep polytetrafluoroethylene sealing material as well as preparation method and application thereof |
-
2016
- 2016-06-20 CN CN201610437374.9A patent/CN106084584A/en not_active Withdrawn
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 |
| 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 |
| CN103435947A (en) * | 2013-08-30 | 2013-12-11 | 广州机械科学研究院有限公司 | Wear-resistant low-creep polytetrafluoroethylene sealing material as well as preparation method and application thereof |
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Application publication date: 20161109 |