CN106810798A - A kind of sound-absorbing, valve seal ptfe composite and preparation method thereof - Google Patents
A kind of sound-absorbing, valve seal ptfe composite and preparation method thereof Download PDFInfo
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- CN106810798A CN106810798A CN201611252201.6A CN201611252201A CN106810798A CN 106810798 A CN106810798 A CN 106810798A CN 201611252201 A CN201611252201 A CN 201611252201A CN 106810798 A CN106810798 A CN 106810798A
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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
- C08K3/08—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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/28—Nitrogen-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
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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
- C08K7/10—Silicon-containing compounds
- C08K7/12—Asbestos
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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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0862—Nickel
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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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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Sealing Material Composition (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The invention discloses a kind of sound-absorbing, valve seal ptfe composite and preparation method thereof, it is characterised in that be made up of the raw material of following weight portion：Natural zeolite 12, diatomite 13, CNT 5 10, ptfe emulsion 25 35, hydrofluoric acid 15 25, nitric acid 15 25, asbestos fibre 23, lanthanum chloride 12, acetone 15 25, ethylenediamine tetra-acetic acid 23, Fe (NO3)312, Co (NO3)3 12, appropriate ammoniacal liquor, appropriate nickel foam, diamond 35, DTAB 57, appropriate methane, appropriate argon gas, appropriate nitrogen, distilled water 100 150；This material with three-dimensional configuration of nickel foam is not only increased into the mechanical property of composite as polymer filler, while enabling the distribution that the CNT of addition is more uniformly distributed；Coordinate the sound-absorbing materials such as addition natural zeolite, enhance the sound-absorbing effect of composite.
Description
Technical field
The present invention relates to a kind of ptfe composite, and in particular to a kind of sound-absorbing, valve seal polytetrafluoro
Ethene composite and preparation method thereof.
Background technology
Polytetrafluoroethylmaterial material has excellent corrosion resistance, weatherability, a chemical stability, and it is non-sticky, nontoxic, without dirt
Dye, be referred to as the king of plastics, be a kind of preferable encapsulant, be widely used in national defence, Aero-Space, medical science, petrochemical industry,
On the sealing device in many fields such as electronics, machinery, meanwhile, polytetrafluoroethylmaterial 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 CNT as polymer
Filler can improve physics, mechanics and the tribological property of material.In general, the larger filler of draw ratio is more beneficial for enhancing
The mechanical property of polymer, and the wearability of the raising material that the small filler of draw ratio can be larger and reduce coefficient of friction.
The master thesis of Jie in office《Nickel foam/polytetrafluoroethylene (PTFE) mechanical seal surface composite material and tribology behavior
Research》In be prepared for a kind of sealed composite material, but as valve seal material for, also there is anti-pressure ability, anti-compacted
The not good problem of change ability.
The content of the invention
Think deeply based on more than, the present invention is intended to provide a kind of low temperature resistant, shear strength nitrile rubber high, anti-aging is applied
Material, and preparation method thereof.
The technical problems to be solved by the invention are realized using following technical scheme：
A kind of sound-absorbing, valve seal ptfe composite, it is characterised in that be by the raw material system of following weight portion
Into：
Natural zeolite 1-2, diatomite 1-3, CNT 5-10, ptfe emulsion 25-35, hydrofluoric acid 15-25, nitric acid
15-25, asbestos fibre 2-3, lanthanum chloride 1-2, acetone 15-25, ethylenediamine tetra-acetic acid 2-3, Fe (NO3)31-2, Co (NO3)3 1-
2, appropriate ammoniacal liquor, appropriate nickel foam, diamond 3-5, DTAB 5-7, appropriate methane, appropriate argon gas, nitrogen
Appropriate gas, distilled water 100-150；
Described hydrofluoric acid mass fraction is 30-40%；Nitric acid mass fraction is 10-20%.The solid content of ptfe emulsion
It is 30-50%.
Described a kind of sound-absorbing, valve seal ptfe composite and preparation method thereof, it is characterised in that
It is made up of following steps：
A. CNT ball milling is added to after 10-20 minutes and 10-15h is soaked in hydrofluoric acid solution, filtering, rinse, after drying
It is added in salpeter solution, and adds lanthanum chloride, ethylenediamine tetra-acetic acid, soak 3-5h, cleaned with aquae destillata to neutrality, then exists
In batch-type furnace 3-5h is dried at 70-100 DEG C；
B. by Fe (NO3)3、Co(NO3)3Dissolving in 20-25 distilled water is added, step a gained CNTs is added, first ultrasound
Magnetic agitation 1-3 hours again after 20-40min, then adjust the PH of solution to 8 with ammoniacal liquor, be kept stirring for 20-25h, filter afterwards simultaneously
Washing, drying gains；
C. nickel foam is cut into suitable size, takes step b gains and be covered in nickel foam, enable it to as far as possible many touching
On the edge of nickel foam, it is put into quartz tube furnace, passes first into argon gas, temperature is passed through nitrogen, temperature when rises to 620-680 DEG C
Methane gas is passed through when rising to more than 700 DEG C, 80-120min is heated；
D. natural zeolite, diatomite, asbestos fibre are added in acetone soln, after ultrasonic disperse 1-2 hours, filtering is dried
It is dry, obtain mixture.
E. step d gained mixture, diamond, DTAB are added to polytetrafluoroethyl-ne dilute emulsion
After middle mixing 1-2h, pouring into mould makes step c resulting materials thorough impregnation wherein, first preliminary at 200-250 DEG C
Solidification 2-3 times, then 2-3h curing moldings are incubated at 260-290 DEG C.
Described a kind of sound-absorbing, valve seal ptfe composite and preparation method thereof, it is characterised in that
Nickel foam size is（2-6）×（2-6）×（1-2）mm3。
Beneficial effects of the present invention：This material with three-dimensional configuration of nickel foam is not only improved as polymer filler
The mechanical property of composite, while enable the distribution that the CNT of addition is more uniformly distributed；Rare earth atom has special
Electron structure and low electronegativity, activity are strong, using rare earth agent treatment carbon nano tube surface, can be by rare earth and carbon
Affinity interaction makes the carbon key of carbon nano tube surface relax, and increases the activity on its surface, meanwhile, rare earth can also be with CNT table
The oxy radical and polytetrafluoroethylene (PTFE) in face generate the rare earth compounding of stabilization by complexation reaction, improve polytetrafluoroethylene (PTFE) and are combined
The interfacial bond property of material, so as to improve the resistance to compression of material, creep resistance, improves its sealing property；Coordinate the natural boiling of addition
The sound-absorbing materials such as stone, enhance the sound-absorbing effect of composite.
Specific embodiment
With reference to embodiment, specific embodiment of the invention is further described.
Embodiment
A kind of sound-absorbing, valve seal ptfe composite, it is characterised in that be by the original of following weight portion
Material is made：
Natural zeolite 2, diatomite 3, CNT 10, ptfe emulsion 35, hydrofluoric acid 25, nitric acid 25, asbestos fibre 3,
Lanthanum chloride 2, acetone 25, ethylenediamine tetra-acetic acid 3, Fe (NO3)3 2, Co (NO3)3 2, appropriate ammoniacal liquor, appropriate nickel foam, diamond 5,
DTAB 7, appropriate methane, appropriate argon gas, appropriate nitrogen, distilled water 150；
Described hydrofluoric acid mass fraction is 30-40%；Nitric acid mass fraction is 10-20%.The solid content of ptfe emulsion
It is 30-50%.
Described a kind of sound-absorbing, valve seal ptfe composite and preparation method thereof, it is characterised in that
It is made up of following steps：
A. CNT ball milling is added to after 10-20 minutes and 10-15h is soaked in hydrofluoric acid solution, filtering, rinse, after drying
It is added in salpeter solution, and adds lanthanum chloride, ethylenediamine tetra-acetic acid, soak 3-5h, cleaned with aquae destillata to neutrality, then exists
In batch-type furnace 3-5h is dried at 70-100 DEG C；
B. by Fe (NO3)3、Co(NO3)3Dissolving in 20-25 distilled water is added, step a gained CNTs is added, first ultrasound
Magnetic agitation 1-3 hours again after 20-40min, then adjust the PH of solution to 8 with ammoniacal liquor, be kept stirring for 20-25h, filter afterwards simultaneously
Washing, drying gains；
C. nickel foam is cut into suitable size, takes step b gains and be covered in nickel foam, enable it to as far as possible many touching
On the edge of nickel foam, it is put into quartz tube furnace, passes first into argon gas, temperature is passed through nitrogen, temperature when rises to 620-680 DEG C
Methane gas is passed through when rising to more than 700 DEG C, 80-120min is heated；
D. natural zeolite, diatomite, asbestos fibre are added in acetone soln, after ultrasonic disperse 1-2 hours, filtering is dried
It is dry, obtain mixture.
E. step d gained mixture, diamond, DTAB are added to polytetrafluoroethyl-ne dilute emulsion
After middle mixing 1-2h, pouring into mould makes step c resulting materials thorough impregnation wherein, first preliminary at 200-250 DEG C
Solidification 2-3 times, then 2-3h curing moldings are incubated at 260-290 DEG C.
Described a kind of sound-absorbing, valve seal ptfe composite and preparation method thereof, it is characterised in that
Nickel foam size is（2-6）×（2-6）×（1-2）mm3。
Performance test data of the invention is：65-75 DEG C of creep compliance value≤0.00828 in interval；Compressive strength >=
61.78MPa。
Claims (3)
1. a kind of sound-absorbing, valve seal ptfe composite, it is characterised in that be by the raw material of following weight portion
It is made：
Natural zeolite 1-2, diatomite 1-3, CNT 5-10, ptfe emulsion 25-35, hydrofluoric acid 15-25, nitric acid
15-25, asbestos fibre 2-3, lanthanum chloride 1-2, acetone 15-25, ethylenediamine tetra-acetic acid 2-3, Fe (NO3)31-2, Co (NO3)3 1-
2, appropriate ammoniacal liquor, appropriate nickel foam, diamond 3-5, DTAB 5-7, appropriate methane, appropriate argon gas, nitrogen
Appropriate gas, distilled water 100-150；
Described hydrofluoric acid mass fraction is 30-40%；Nitric acid mass fraction is 10-20%, the solid content of ptfe emulsion
It is 30-50%.
2. a kind of sound-absorbing according to claim 1, valve seal ptfe composite and preparation method thereof,
Characterized in that, being made up of following steps：
A. CNT ball milling is added to after 10-20 minutes and 10-15h is soaked in hydrofluoric acid solution, filtering, rinse, after drying
It is added in salpeter solution, and adds lanthanum chloride, ethylenediamine tetra-acetic acid, soak 3-5h, cleaned with aquae destillata to neutrality, then exists
In batch-type furnace 3-5h is dried at 70-100 DEG C；
B. by Fe (NO3)3、Co(NO3)3Dissolving in 20-25 distilled water is added, step a gained CNTs is added, first ultrasound
Magnetic agitation 1-3 hours again after 20-40min, then adjust the PH of solution to 8 with ammoniacal liquor, be kept stirring for 20-25h, filter afterwards simultaneously
Washing, drying gains；
C. nickel foam is cut into suitable size, takes step b gains and be covered in nickel foam, enable it to as far as possible many touching
On the edge of nickel foam, it is put into quartz tube furnace, passes first into argon gas, temperature is passed through nitrogen, temperature when rises to 620-680 DEG C
Methane gas is passed through when rising to more than 700 DEG C, 80-120min is heated；
D. natural zeolite, diatomite, asbestos fibre are added in acetone soln, after ultrasonic disperse 1-2 hours, filtering is dried
It is dry, mixture is obtained,
E. step d gained mixture, diamond, DTAB are added in polytetrafluoroethyl-ne dilute emulsion and are mixed
After closing stirring 1-2h, pouring into mould makes step c resulting materials thorough impregnation wherein, first the primary solidification at 200-250 DEG C
2-3 times, then 2-3h curing moldings are incubated at 260-290 DEG C.
3. a kind of sound-absorbing according to claim 2, valve seal ptfe composite and preparation method thereof,
Characterized in that, nickel foam size is（2-6）×（2-6）×（1-2）mm3。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611252201.6A CN106810798A (en) | 2016-12-30 | 2016-12-30 | A kind of sound-absorbing, valve seal ptfe composite and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611252201.6A CN106810798A (en) | 2016-12-30 | 2016-12-30 | A kind of sound-absorbing, valve seal ptfe composite and preparation method thereof |
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| Publication Number | Publication Date |
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| CN106810798A true CN106810798A (en) | 2017-06-09 |
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| CN201611252201.6A Pending CN106810798A (en) | 2016-12-30 | 2016-12-30 | A kind of sound-absorbing, valve seal ptfe composite and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108659412A (en) * | 2018-04-18 | 2018-10-16 | 安徽斯瑞尔阀门有限公司 | A kind of valve seal ptfe composite of sound-absorbing and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1844228A (en) * | 2006-05-11 | 2006-10-11 | 上海交通大学 | Process for preparing rare earth modified carbon nanotube/polytetrafluoroethylene composite materials |
| CN105949688A (en) * | 2016-06-22 | 2016-09-21 | 芜湖市长江起重设备制造有限公司 | Carbon nano tube/polytetrafluoroethylene composite material and preparation method thereof |
-
2016
- 2016-12-30 CN CN201611252201.6A patent/CN106810798A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1844228A (en) * | 2006-05-11 | 2006-10-11 | 上海交通大学 | Process for preparing rare earth modified carbon nanotube/polytetrafluoroethylene composite materials |
| CN105949688A (en) * | 2016-06-22 | 2016-09-21 | 芜湖市长江起重设备制造有限公司 | Carbon nano tube/polytetrafluoroethylene composite material and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 任婕: "泡沫镍/聚四氟乙烯机械密封复合材料及摩擦学行为", 《中国优秀博士学位论文 工程科技I辑》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108659412A (en) * | 2018-04-18 | 2018-10-16 | 安徽斯瑞尔阀门有限公司 | A kind of valve seal ptfe composite of sound-absorbing and preparation method thereof |
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Application publication date: 20170609 |
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