CN107674351A - Wear-resisting dust-free area sealing strip PTFE resin composite and preparation method thereof - Google Patents
Wear-resisting dust-free area sealing strip PTFE resin composite and preparation method thereof Download PDFInfo
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- CN107674351A CN107674351A CN201710868369.8A CN201710868369A CN107674351A CN 107674351 A CN107674351 A CN 107674351A CN 201710868369 A CN201710868369 A CN 201710868369A CN 107674351 A CN107674351 A CN 107674351A
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- wear
- sealing strip
- free area
- area sealing
- ptfe
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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
-
- 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
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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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)
- Compositions Of Macromolecular Compounds (AREA)
- Sealing Devices (AREA)
- Sealing Material Composition (AREA)
Abstract
The invention discloses a kind of wear-resisting dust-free area sealing strip PTFE resin composite, it is made up of by mass percentage following components：PI：15 20%, PPSO2：4 12%, PPTA：2 6%, potassium titanate crystal whisker：8 12%, surfactant：0.5 2%, antioxidant：0.5 1%, flow promortor：0.5 1%, surplus PTFE.Also disclose its preparation method.In the present invention, the hardness of composite can be increased after PI additions PTFE, impact strength and bending strength, comprehensive mechanical performance get a promotion.PPSO2, PPTA are added to wearability and the creep resistance that polytetrafluoroethylene (PTFE) can be greatly improved in PTFE, and potassium titanate crystal whisker can not only improve PTFE anti-wear performance, moreover it is possible to effectively improve its mechanical performance.Wear-resisting dust-free area sealing strip has good mechanical performance and anti-wear performance made from material of the present invention.
Description
Technical field
The present invention relates to wear-resisting dust-free area sealing strip PTFE resin composite and preparation method thereof, belongs to composite neck
Domain.
Background technology
Polytetrafluoroethylene (PTFE)（ PTFE）A kind of outstanding polymeric material of combination property, have fabulous resistant of high or low temperature and
Chemical resistance, and dielectric properties are excellent, the minimum heat endurance of coefficient of friction is good, can in -260 DEG C ~ 260 DEG C long-term uses,
But pure PTFE has cold flow properties, poor dimensional stability, dielectric strength is low, wears the shortcomings of big.In order to overcome lacking for pure PTFE
Fall into, generally use surface is modified, and filling-modified or blending and modifying means improve its combination property, wherein it is filling-modified because
Simply, price is low, effect is good and is widely used.
Polyimides（PI）It is a kind of heat resistance high polymer material with sufficiently stable heteroaromatic construction unit, has
Prominent heat endurance, glass transition temperature Tg can bear 250 ~ 400 DEG C of high temperature more than 260 DEG C, excellent mechanical performance,
Radiation resistance and solvent resistance, and in high temperature, the extreme environment such as high-low pressure and high speed there is friction well to grind
Performance is damaged, frequently as High Performance Thermoplastic Composites in fields such as Aero-Space.
It is the offer pressures such as the brakes of vehicle, door open/close structure that air eddy compressor is typically used on new-energy automobile
Contracting air.Air eddy compressor is that the compressor for obtaining gases at high pressure is compressed to air, and it fixed is gradually opened by one
Line vortex capstan and an involute motion scroll plate composition in eccentric convolution translation, dust-free area seal are to be used to sound be vortexed
Play sealing and the wear-resisting part of anti-attrition between disk, be to influence compressor performance and the key position in life-span, therefore sealing strip
Anti-wear performance it is particularly significant.
The content of the invention
It is an object of the invention to provide a kind of wear-resisting dust-free area sealing strip PTFE resin composite, has good resistance to height
Warm nature energy.
To reach above-mentioned purpose, the technical solution adopted by the present invention is：A kind of wear-resisting dust-free area sealing strip PTFE resin is answered
Condensation material, it is characterised in that：It is made up of by mass percentage following components：
PI：15-20%
PPSU（PPSO2）：4-12%
PPTA（PPTA）：2-6%
Potassium titanate crystal whisker：8-12%
Surfactant：0.5-2%
Antioxidant：0.5-1%
Flow promortor：0.5-1%
Surplus is PTFE.
Preferably, 25-40 μm of the granularity of PTFE fine powder, apparent density 400-500g/L；65-80 μm of the particle diameter of PI fine powders,
Apparent density 800-1000g/L；30-50 μm of the granularity of PPSO2 fine powders, apparent density 600-800g/L；The granularity of PPTA fine powders
50-80 μm, apparent density 800-1200g/L.
Preferably, the potassium titanate crystal whisker is to be grafted the crystal whisker of hexa potassium titanate handled, avarage fiber diameter through maleic anhydride
For 0.1-0.6 μm, average fiber length is 3-20 μm.
Preferably, the surfactant is Pluronic F68 and dodecyl sodium sulfate with weight
Than 0.8:The mixture of 1 composition.
Preferably, the antioxidant is 2,2'- di-2-ethylhexylphosphine oxides-(4- methyl-6-tert-butylphenol).
Preferably, the flow promortor is the carborundum handled through aluminate coupling agent, and particle diameter is 2500 mesh.
The invention also discloses the preparation method of above-mentioned wear-resisting dust-free area sealing strip, its step includes：
（1）, weigh raw material according to quantity, add in high speed mixer, taken out after 2 ~ 3min of high-speed stirred, place 2 ~ 6h；
（2）, using press carry out cold moudling, 10 ~ 30MPa of pressure, dwell time 1min, the demoulding obtain preforming sample；
（3）, preforming sample is put into sintering furnace, be sintered 3 ~ 6h at 380 ± 5 DEG C, room temperature naturally cooled to stove,
Machining obtains wear-resisting dust-free area sealing strip.
In the present invention, the hardness of composite, impact strength and bending strength can be increased after PI additions PTFE, it is comprehensive
Mechanical performance is closed to get a promotion.PPSO2, PPTA are added to the wearability that polytetrafluoroethylene (PTFE) can be greatly improved in PTFE and resisted
Creep properties, potassium titanate crystal whisker can not only improve PTFE anti-wear performance, moreover it is possible to effectively improve its mechanical performance.With material of the present invention
The wear-resisting dust-free area sealing strip of air eddy compressor on obtained new-energy automobile has good mechanical performance and wear-resisting
Performance.
Embodiment
Embodiment 1-3
The preparation method of the wear-resisting dust-free area sealing strip of this air eddy compressor, its step include：
（1）, weigh raw material according to quantity, add in high speed mixer, taken out after 2 ~ 3min of high-speed stirred, place 2 ~ 6h；
（2）, using press carry out cold moudling, 10 ~ 30MPa of pressure, dwell time 1min, the demoulding obtain preforming sample；
（3）, preforming sample is put into sintering furnace, be sintered 3 ~ 6h at 380 ± 5 DEG C, room temperature naturally cooled to stove,
Machining obtains air eddy compressor with wear-resisting dust-free area sealing strip.
Each component content is shown in Table 1；
Performance test is carried out with wear-resisting dust-free area sealing strip to obtained air eddy compressor, test result is shown in Table 2.
The embodiment 1-3 of table 1 component table
The embodiment 1-4 sealing strip performance tests of table 2
Note：Bending strength uses GB/T9341 standard testings, and tensile strength uses GB/T1040 standard testings.Friction-wear test
Condition：Initial load 180N, rotating speed 200r/min, dry friction 2h.To emery wheel：45 steel, 42-45HRC.
Claims (7)
- A kind of 1. wear-resisting dust-free area sealing strip PTFE resin composite, it is characterised in that：By mass percentage by following components Form：PI：15-20%PPSO2：4-12%PPTA：2-6%Potassium titanate crystal whisker：8-12%Surfactant：0.5-2%Antioxidant：0.5-1%Flow promortor：0.5-1%Surplus is PTFE.
- 2. wear-resisting dust-free area sealing strip PTFE resin composite according to claim 1, it is characterised in that：PTFE fine powder 25-40 μm of granularity, apparent density 400-500g/L；65-80 μm of the particle diameter of PI fine powders, apparent density 800-1000g/L； 30-50 μm of the granularity of PPSO2 fine powders, apparent density 600-800g/L；50-80 μm of the granularity of PPTA fine powders, apparent density 800- 1200g/L。
- 3. wear-resisting dust-free area sealing strip PTFE resin composite according to claim 2, it is characterised in that：The metatitanic acid Potassium whisker is the crystal whisker of hexa potassium titanate that processing is grafted through maleic anhydride, and avarage fiber diameter is 0.1-0.6 μm, average fiber length For 3-20 μm.
- 4. wear-resisting dust-free area sealing strip PTFE resin composite according to claim 3, it is characterised in that：The surface Activating agent be Pluronic F68 and dodecyl sodium sulfate with weight than 0.8:The mixture of 1 composition.
- 5. wear-resisting dust-free area sealing strip PTFE resin composite according to claim 4, it is characterised in that：The antioxygen Agent is 2,2' methylene bis-(4- methyl-6-tert-butylphenol).
- 6. wear-resisting dust-free area sealing strip PTFE resin composite according to claim 5, it is characterised in that：The flowing Auxiliary agent is the carborundum handled through aluminate coupling agent, and particle diameter is 2500 mesh.
- 7. the preparation method of the wear-resisting dust-free area sealing strip any one of claim 1-6, it is characterised in that including following Step：（1）, weigh raw material according to quantity, add in high speed mixer, taken out after 2 ~ 3min of high-speed stirred, place 2 ~ 6h；（2）, using press carry out cold moudling, 10 ~ 30MPa of pressure, dwell time 1min, the demoulding obtain preforming sample；（3）, preforming sample is put into sintering furnace, be sintered 3 ~ 6h at 380 ± 5 DEG C, room temperature naturally cooled to stove, Machining obtains wear-resisting dust-free area sealing strip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710868369.8A CN107674351A (en) | 2017-09-22 | 2017-09-22 | Wear-resisting dust-free area sealing strip PTFE resin composite and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710868369.8A CN107674351A (en) | 2017-09-22 | 2017-09-22 | Wear-resisting dust-free area sealing strip PTFE resin composite and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108976797A (en) * | 2018-06-26 | 2018-12-11 | 浙江威思康塑胶有限公司 | A kind of edge band and its production method of bisphenol a polysulfone material |
| CN109593307A (en) * | 2018-12-18 | 2019-04-09 | 南京肯特复合材料股份有限公司 | PTFE composite piston ring and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102719044A (en) * | 2012-06-28 | 2012-10-10 | 浙江吉利汽车研究院有限公司杭州分公司 | Polytetrafluoroethylene composite material and preparation method thereof |
| CN103571111A (en) * | 2012-07-22 | 2014-02-12 | 上海利隆化工化纤有限公司 | Polytetrafluoroethylene sealing gasket and preparation method thereof |
-
2017
- 2017-09-22 CN CN201710868369.8A patent/CN107674351A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102719044A (en) * | 2012-06-28 | 2012-10-10 | 浙江吉利汽车研究院有限公司杭州分公司 | Polytetrafluoroethylene composite material and preparation method thereof |
| CN103571111A (en) * | 2012-07-22 | 2014-02-12 | 上海利隆化工化纤有限公司 | Polytetrafluoroethylene sealing gasket and preparation method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108976797A (en) * | 2018-06-26 | 2018-12-11 | 浙江威思康塑胶有限公司 | A kind of edge band and its production method of bisphenol a polysulfone material |
| CN108976797B (en) * | 2018-06-26 | 2020-12-11 | 浙江威思康塑胶有限公司 | Edge banding made of bisphenol A polysulfone and production method thereof |
| CN109593307A (en) * | 2018-12-18 | 2019-04-09 | 南京肯特复合材料股份有限公司 | PTFE composite piston ring and preparation method thereof |
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Application publication date: 20180209 |