CN108659413A - A kind of valve seal carbon nano-fiber modified polytetrafluoroethylcomposite composite material - Google Patents
A kind of valve seal carbon nano-fiber modified polytetrafluoroethylcomposite composite material Download PDFInfo
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- CN108659413A CN108659413A CN201810351004.2A CN201810351004A CN108659413A CN 108659413 A CN108659413 A CN 108659413A CN 201810351004 A CN201810351004 A CN 201810351004A CN 108659413 A CN108659413 A CN 108659413A
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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
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/12—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C08L27/18—Homopolymers or copolymers or tetrafluoroethene
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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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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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
- C08K3/32—Phosphorus-containing compounds
- C08K2003/321—Phosphates
- C08K2003/328—Phosphates of heavy 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
- 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
- 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
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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
- 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
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Sealing Material Composition (AREA)
Abstract
The present invention relates to valve seal field of material technology, and in particular to a kind of valve seal carbon nano-fiber modified polytetrafluoroethylcomposite composite material, raw material include following components：Polytetrafluoroethylene (PTFE), carbon nano-fiber, diatomite, quartz sand, white carbon, linear phenol-aldehyde resin, dibutyl phthalate, p-phenylenediamine, septichen phenyl ester, self-cleaning dose, fire retardant, glycerine, paraffin and absolute alcohol；The present invention uses carbon nano-fiber modified Teflon, and composite material obtained has the characteristics that good plasticity, high temperature resistant, anti-aging and corrosion resistant, can be processed into variously-shaped, and friction coefficient is low；It is made of titanium dioxide and titanium phosphate for self-cleaning dose in raw material, titanium dioxide can absorb the light of certain wavelength, generate free electrons and holes, make the pollutant of film surface absorption that redox occur to decompose and remove and kill surface germ, to have self-cleaning action, the effect of titanium phosphate only can play self-cleaning effect using water and air under conditions of no light.
Description
Technical field
The present invention relates to valve seal field of material technology, and in particular to a kind of valve seal is poly- with carbon nano-fiber modification
Tetrafluoroethene composite material.
Background technology
Polytetrafluoroethylene material have excellent corrosion resistance, weatherability, chemical stability, and it is non-sticky, nontoxic, without dirt
Dye, be referred to as the king of plastics, be a kind of preferable sealing material, be widely used in national defence, aerospace, medicine, petrochemical industry,
On the sealing device in many fields such as electronics, machinery, meanwhile, polytetrafluoroethylene material also has excellent radioresistance, tritium phase
Capacitive and forthright to the hyposmosis of tritium, therefore also it is widely used in the sealing containing tritium system.Using carbon nano-fiber as raw material
The physics, mechanics and tribological property of material can be improved.
(1) the technical issues of solving
In view of the deficiencies of the prior art, the present invention provides a kind of valve seal carbon nano-fiber modified Teflons
Composite material：It is made of titanium dioxide and titanium phosphate for self-cleaning dose in raw material, titanium dioxide can absorb the light of certain wavelength, generate freely electricity
Sub and hole makes the pollutant of film surface absorption that redox occur and decomposes and remove and kill surface germ, to certainly
The effect of clean effect, titanium phosphate only can play self-cleaning effect under conditions of no light using water and air；Raw material of the present invention
Middle fire retardant is made of methyl-phosphoric acid dimethyl ester and organo montmorillonite, when encountering burning things which may cause a fire disaster, can form fixedness on the surface
Phosphoric acid layer, so as to completely cut off air and heat source, force burning stop；The organo montmorillonite added in fire retardant can improve fire-retardant
The thermal stability of agent keeps the flame retardant effect time more longlasting.
(2) technical solution
In order to achieve the above object, the present invention is achieved by the following technical programs：
A kind of valve seal carbon nano-fiber modified polytetrafluoroethylcomposite composite material, raw material is by by weight：It is poly-
30-35 parts of tetrafluoroethene, 12-15 parts of carbon nano-fiber, 2-5 parts of diatomite, 3.5-4 parts of quartz sand, 1.8-2.5 parts of white carbon,
3.3-3.8 parts of linear phenol-aldehyde resin, 3.5-4 parts of dibutyl phthalate, 1.2-1.6 parts of p-phenylenediamine, septichen
1.6-2.2 parts of phenyl ester, self-cleaning dose 0.8-1.2 parts, 0.6-0.9 parts of fire retardant, 1.4-1.9 parts of glycerine, 2.1-2.4 parts of paraffin and nothing
13-16 parts of water-alcohol.
Preferential, a kind of valve seal carbon nano-fiber modified polytetrafluoroethylcomposite composite material, preparation method includes
Following steps：
A, carbon nano-fiber is slowly added to be stirred into absolute alcohol, is then ultrasonically treated and obtains carbon nano-fiber
Absolute alcohol solution；
B, diatomite, white carbon and quartz sand are first added into high-speed mixer, line style phenolic aldehyde is added after mixing 15min
Resin and paraffin then heat to 95 DEG C of mixing 10min, obtain blending ingredients A；
C, blending ingredients A is added in sand mill, the absolute alcohol solution of carbon nano-fiber is added after sand milling 30min
And glycerine, continue that 20min is sanded, obtains blending ingredients B；
D, blending ingredients B is added in mixer, 5min is kneaded after being heated to 130 DEG C, then started to cool down, work as temperature
Polytetrafluoroethylene (PTFE), self-cleaning dose and fire retardant are added after being down to 70 DEG C, is kneaded 10min at this temperature, adds phthalic acid
Dibutyl ester, septichen phenyl ester and p-phenylenediamine continue to be kneaded 5min, obtain rubber compound；
E, rubber compound obtained is added in double screw extruder, sizing material is made continuously to squeeze out, and in vulcanization kettle cure
Molding.
Preferential, described self-cleaning dose by titanium dioxide and titanium phosphate according to mass ratio 3：2 mix.
Preferential, the fire retardant is by methyl-phosphoric acid dimethyl ester and organo montmorillonite according to mass ratio 1：2 mix.
Preferential, sonication treatment time is 15min in the step a.
Preferential, sulfide stress is 0.6MPa, vulcanization time 120min in the step e.
(3) advantageous effect
1, in raw material of the present invention self-cleaning dose be made of titanium dioxide and titanium phosphate, titanium dioxide can absorb the light of certain wavelength, production
Be born from is made the pollutant of film surface absorption that redox occur by electrons and holes decomposes and removes and kill surface germ, from
And there is self-cleaning action, the effect of titanium phosphate only can play self-cleaning effect under conditions of no light using water and air.
2, fire retardant is made of methyl-phosphoric acid dimethyl ester and organo montmorillonite in raw material of the present invention, when encountering burning things which may cause a fire disaster, energy
The phosphoric acid layer for forming fixedness on the surface forces burning to stop so as to completely cutting off air and heat source；It is added in fire retardant
Organo montmorillonite can improve the thermal stability of fire retardant, keep the flame retardant effect time more longlasting.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention,
Technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is the present invention one
Divide embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making
The every other embodiment obtained under the premise of creative work, shall fall within the protection scope of the present invention.
Embodiment 1：
A kind of valve seal carbon nano-fiber modified polytetrafluoroethylcomposite composite material, raw material is by by weight：It is poly-
30 parts of tetrafluoroethene, 12 parts of carbon nano-fiber, 2 parts of diatomite, 3.5 parts of quartz sand, 1.8 parts of white carbon, linear phenol-aldehyde resin 3.5
Part, 3.5 parts of dibutyl phthalate, 1.2 parts of p-phenylenediamine, 1.6 parts of septichen phenyl ester, self-cleaning dose 0.8 part, it is fire-retardant
13 parts of 0.6 part of agent, 1.4 parts of glycerine, 2.1 parts of paraffin and absolute alcohol.
A kind of valve seal carbon nano-fiber modified polytetrafluoroethylcomposite composite material, preparation method include following step
Suddenly：
A, carbon nano-fiber is slowly added to be stirred into absolute alcohol, is then ultrasonically treated and obtains carbon nano-fiber
Absolute alcohol solution；
B, diatomite, white carbon and quartz sand are first added into high-speed mixer, line style phenolic aldehyde is added after mixing 15min
Resin and paraffin then heat to 95 DEG C of mixing 10min, obtain blending ingredients A；
C, blending ingredients A is added in sand mill, the absolute alcohol solution of carbon nano-fiber is added after sand milling 30min
And glycerine, continue that 20min is sanded, obtains blending ingredients B；
D, blending ingredients B is added in mixer, 5min is kneaded after being heated to 130 DEG C, then started to cool down, work as temperature
Polytetrafluoroethylene (PTFE), self-cleaning dose and fire retardant are added after being down to 70 DEG C, is kneaded 10min at this temperature, adds phthalic acid
Dibutyl ester, septichen phenyl ester and p-phenylenediamine continue to be kneaded 5min, obtain rubber compound；
E, rubber compound obtained is added in double screw extruder, sizing material is made continuously to squeeze out, and in vulcanization kettle cure
Molding.
Composite material made from embodiment 1 has the characteristics that good plasticity, high temperature resistant, anti-aging and corrosion resistant, can process
At variously-shaped, and friction coefficient is low.
Embodiment 2：
A kind of valve seal carbon nano-fiber modified polytetrafluoroethylcomposite composite material, raw material is by by weight：It is poly-
32 parts of tetrafluoroethene, 13 parts of carbon nano-fiber, 3 parts of diatomite, 3.7 parts of quartz sand, 1.9 parts of white carbon, linear phenol-aldehyde resin 3.5
Part, 3.7 parts of dibutyl phthalate, 1.4 parts of p-phenylenediamine, 1.8 parts of septichen phenyl ester, self-cleaning dose 0.9 part, it is fire-retardant
14 parts of 0.8 part of agent, 1.5 parts of glycerine, 2.3 parts of paraffin and absolute alcohol.
A kind of valve seal carbon nano-fiber modified polytetrafluoroethylcomposite composite material, preparation method include following step
Suddenly：
A, carbon nano-fiber is slowly added to be stirred into absolute alcohol, is then ultrasonically treated and obtains carbon nano-fiber
Absolute alcohol solution；
B, diatomite, white carbon and quartz sand are first added into high-speed mixer, line style phenolic aldehyde is added after mixing 15min
Resin and paraffin then heat to 95 DEG C of mixing 10min, obtain blending ingredients A；
C, blending ingredients A is added in sand mill, the absolute alcohol solution of carbon nano-fiber is added after sand milling 30min
And glycerine, continue that 20min is sanded, obtains blending ingredients B；
D, blending ingredients B is added in mixer, 5min is kneaded after being heated to 130 DEG C, then started to cool down, work as temperature
Polytetrafluoroethylene (PTFE), self-cleaning dose and fire retardant are added after being down to 70 DEG C, is kneaded 10min at this temperature, adds phthalic acid
Dibutyl ester, septichen phenyl ester and p-phenylenediamine continue to be kneaded 5min, obtain rubber compound；
E, rubber compound obtained is added in double screw extruder, sizing material is made continuously to squeeze out, and in vulcanization kettle cure
Molding.
Composite material made from embodiment 2 has the characteristics that good plasticity, high temperature resistant, anti-aging and corrosion resistant, can process
At variously-shaped, and friction coefficient is low.
Embodiment 3：
A kind of valve seal carbon nano-fiber modified polytetrafluoroethylcomposite composite material, raw material is by by weight：It is poly-
34 parts of tetrafluoroethene, 14 parts of carbon nano-fiber, 4 parts of diatomite, 3.6 parts of quartz sand, 2.3 parts of white carbon, linear phenol-aldehyde resin 3.7
Part, 3.8 parts of dibutyl phthalate, 1.5 parts of p-phenylenediamine, 2.1 parts of septichen phenyl ester, self-cleaning dose 0.9 part, it is fire-retardant
15 parts of 0.8 part of agent, 1.7 parts of glycerine, 2.3 parts of paraffin and absolute alcohol.
A kind of valve seal carbon nano-fiber modified polytetrafluoroethylcomposite composite material, preparation method include following step
Suddenly：
A, carbon nano-fiber is slowly added to be stirred into absolute alcohol, is then ultrasonically treated and obtains carbon nano-fiber
Absolute alcohol solution；
B, diatomite, white carbon and quartz sand are first added into high-speed mixer, line style phenolic aldehyde is added after mixing 15min
Resin and paraffin then heat to 95 DEG C of mixing 10min, obtain blending ingredients A；
C, blending ingredients A is added in sand mill, the absolute alcohol solution of carbon nano-fiber is added after sand milling 30min
And glycerine, continue that 20min is sanded, obtains blending ingredients B；
D, blending ingredients B is added in mixer, 5min is kneaded after being heated to 130 DEG C, then started to cool down, work as temperature
Polytetrafluoroethylene (PTFE), self-cleaning dose and fire retardant are added after being down to 70 DEG C, is kneaded 10min at this temperature, adds phthalic acid
Dibutyl ester, septichen phenyl ester and p-phenylenediamine continue to be kneaded 5min, obtain rubber compound；
E, rubber compound obtained is added in double screw extruder, sizing material is made continuously to squeeze out, and in vulcanization kettle cure
Molding.
Composite material made from embodiment 3 has the characteristics that good plasticity, high temperature resistant, anti-aging and corrosion resistant, can process
At variously-shaped, and friction coefficient is low.
Embodiment 4：
A kind of valve seal carbon nano-fiber modified polytetrafluoroethylcomposite composite material, raw material is by by weight：It is poly-
35 parts of tetrafluoroethene, 5 parts of carbon nano-fiber, 5 parts of diatomite, 3.9 parts of quartz sand, 2.5 parts of white carbon, linear phenol-aldehyde resin 3.8
Part, 4 parts of dibutyl phthalate, 1.5 parts of p-phenylenediamine, 2.2 parts of septichen phenyl ester, self-cleaning dose 1.2 parts, fire retardant
16 parts of 0.9 part, 1.9 parts of glycerine, 2.4 parts of paraffin and absolute alcohol.
A kind of valve seal carbon nano-fiber modified polytetrafluoroethylcomposite composite material, preparation method include following step
Suddenly：
A, carbon nano-fiber is slowly added to be stirred into absolute alcohol, is then ultrasonically treated and obtains carbon nano-fiber
Absolute alcohol solution；
B, diatomite, white carbon and quartz sand are first added into high-speed mixer, line style phenolic aldehyde is added after mixing 15min
Resin and paraffin then heat to 95 DEG C of mixing 10min, obtain blending ingredients A；
C, blending ingredients A is added in sand mill, the absolute alcohol solution of carbon nano-fiber is added after sand milling 30min
And glycerine, continue that 20min is sanded, obtains blending ingredients B；
D, blending ingredients B is added in mixer, 5min is kneaded after being heated to 130 DEG C, then started to cool down, work as temperature
Polytetrafluoroethylene (PTFE), self-cleaning dose and fire retardant are added after being down to 70 DEG C, is kneaded 10min at this temperature, adds phthalic acid
Dibutyl ester, septichen phenyl ester and p-phenylenediamine continue to be kneaded 5min, obtain rubber compound；
E, rubber compound obtained is added in double screw extruder, sizing material is made continuously to squeeze out, and in vulcanization kettle cure
Molding.
Composite material made from embodiment 4 has the characteristics that good plasticity, high temperature resistant, anti-aging and corrosion resistant, can process
At variously-shaped, and friction coefficient is low.
It should be noted that herein, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also include other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to the foregoing embodiments
Invention is explained in detail, it will be understood by those of ordinary skill in the art that：It still can be to aforementioned each implementation
Technical solution recorded in example is modified or equivalent replacement of some of the technical features；And these modification or
It replaces, the spirit and scope for various embodiments of the present invention technical solution that it does not separate the essence of the corresponding technical solution.
Claims (6)
1. a kind of valve seal carbon nano-fiber modified polytetrafluoroethylcomposite composite material, which is characterized in that its raw material is by pressing weight
Measure part meter：30-35 parts of polytetrafluoroethylene (PTFE), 12-15 parts of carbon nano-fiber, 2-5 parts of diatomite, 3.5-4 parts of quartz sand, white carbon
1.8-2.5 parts, it is 3.3-3.8 parts of linear phenol-aldehyde resin, 3.5-4 parts of dibutyl phthalate, 1.2-1.6 parts of p-phenylenediamine, adjacent
1.6-2.2 parts of phenyl hydroxybenzoate, self-cleaning dose 0.8-1.2 parts, 0.6-0.9 parts of fire retardant, 1.4-1.9 parts of glycerine, paraffin
2.1-2.4 13-16 parts of part and absolute alcohol.
2. a kind of valve seal carbon nano-fiber modified polytetrafluoroethylcomposite composite material as described in claim 1, feature
It is, preparation method includes the following steps：
A, carbon nano-fiber is slowly added to be stirred into absolute alcohol, is then ultrasonically treated and obtains the nothing of carbon nano-fiber
Water-alcohol solution；
B, diatomite, white carbon and quartz sand are first added into high-speed mixer, linear phenol-aldehyde resin is added after mixing 15min
And paraffin, 95 DEG C of mixing 10min are then heated to, blending ingredients A is obtained；
C, blending ingredients A is added in sand mill, is sanded after 30min and adds the absolute alcohol solution of carbon nano-fiber and sweet
Oil continues that 20min is sanded, obtains blending ingredients B；
D, blending ingredients B is added in mixer, 5min is kneaded after being heated to 130 DEG C, then start to cool down, when temperature is down to
Polytetrafluoroethylene (PTFE), self-cleaning dose and fire retardant are added after 70 DEG C, is kneaded 10min at this temperature, adds two fourth of phthalic acid
Ester, septichen phenyl ester and p-phenylenediamine continue to be kneaded 5min, obtain rubber compound；
E, rubber compound obtained is added in double screw extruder, sizing material is made continuously to squeeze out, and the sulfidization molding in vulcanizing tank.
3. a kind of valve seal carbon nano-fiber modified polytetrafluoroethylcomposite composite material as described in claim 1, feature
It is：Described self-cleaning dose by titanium dioxide and titanium phosphate according to mass ratio 3：2 mix.
4. a kind of valve seal carbon nano-fiber modified polytetrafluoroethylcomposite composite material as described in claim 1, feature
It is：The fire retardant is by methyl-phosphoric acid dimethyl ester and organo montmorillonite according to mass ratio 1：2 mix.
5. a kind of preparation side of valve seal carbon nano-fiber modified polytetrafluoroethylcomposite composite material as claimed in claim 2
Method, it is characterised in that：Sonication treatment time is 15min in the step a.
6. a kind of preparation side of valve seal carbon nano-fiber modified polytetrafluoroethylcomposite composite material as claimed in claim 2
Method, it is characterised in that：Sulfide stress is 0.6MPa, vulcanization time 120min in the step e.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810351004.2A CN108659413A (en) | 2018-04-18 | 2018-04-18 | A kind of valve seal carbon nano-fiber modified polytetrafluoroethylcomposite composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810351004.2A CN108659413A (en) | 2018-04-18 | 2018-04-18 | A kind of valve seal carbon nano-fiber modified polytetrafluoroethylcomposite composite material |
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| CN108659413A true CN108659413A (en) | 2018-10-16 |
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| CN201810351004.2A Pending CN108659413A (en) | 2018-04-18 | 2018-04-18 | A kind of valve seal carbon nano-fiber modified polytetrafluoroethylcomposite composite material |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103467896A (en) * | 2013-09-18 | 2013-12-25 | 常德翔宇设备制造有限公司 | Manufacturing method of enhanced polytetrafluoroethylene for high-medium pressure valve sealing element |
| CN104592695A (en) * | 2015-01-04 | 2015-05-06 | 和县科嘉阀门铸造有限公司 | Nano carbon fiber modified polytetrafluoroethylene composite material for sealing valve |
| CN104592693A (en) * | 2015-01-04 | 2015-05-06 | 和县科嘉阀门铸造有限公司 | Nano microcrystal ceramic modified polytetrafluoroethylene composite material for valve sealing |
-
2018
- 2018-04-18 CN CN201810351004.2A patent/CN108659413A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103467896A (en) * | 2013-09-18 | 2013-12-25 | 常德翔宇设备制造有限公司 | Manufacturing method of enhanced polytetrafluoroethylene for high-medium pressure valve sealing element |
| CN104592695A (en) * | 2015-01-04 | 2015-05-06 | 和县科嘉阀门铸造有限公司 | Nano carbon fiber modified polytetrafluoroethylene composite material for sealing valve |
| CN104592693A (en) * | 2015-01-04 | 2015-05-06 | 和县科嘉阀门铸造有限公司 | Nano microcrystal ceramic modified polytetrafluoroethylene composite material for valve sealing |
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