CN108102261A - A kind of polyphenylene sulfide and nanometer Al2O3Filled polytetrafluoroethylene composite material - Google Patents
A kind of polyphenylene sulfide and nanometer Al2O3Filled polytetrafluoroethylene composite material Download PDFInfo
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- CN108102261A CN108102261A CN201611045071.9A CN201611045071A CN108102261A CN 108102261 A CN108102261 A CN 108102261A CN 201611045071 A CN201611045071 A CN 201611045071A CN 108102261 A CN108102261 A CN 108102261A
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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
- 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
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Abstract
A kind of polyphenylene sulfide and nanometer Al2O3Filled polytetrafluoroethylene composite material prepares polyphenylene sulfide with the method for mechanical blending, cold moudling, sintering（PPS）With nanometer Al2O3Filled polytetrafluoroethylene（PTFE）Composite sample；With the friction and wear behavior of MRH3 type ring blocks testing machine test each sample under DRY SLIDING；The wear surface of sample is observed and analyzed with shifting the pattern of film surface with SEM.When PPS mass fractions are 5%, the friction factor and Volume erosion rate of PPS/PTFE composite materials reach minimum value；Nanometer Al2O3Addition further improve the tribological properties of PPS/PTFE composite materials, when its mass fraction is 5%, nanometer Al2O3/ PPS/PTFE composite material volumes wear rate is minimum, and the purer PTFE of wearability improves 276 times.PTFE/PPS/PTFE and nanometer Al at room temperature2O3The wear mechanism of/PPS/PTFE composite materials is mainly adhesive wear, and nanometer Al at 150 DEG C2O3/ PPS/PTFE composite materials are with abrasive wear.
Description
Technical field
The present invention relates to a kind of powdered metallurgical material more particularly to a kind of polyphenylene sulfides and nanometer Al2O3Fill polytetrafluoroethyl-ne
Alkene composite material.
Background technology
Stirling engine is a kind of external heating, using high pressure hydrogen or helium as the enclosed extraction cycle hot gas of working medium
Machine, power performance and reliability and dynamic sealing technology are closely related.Usually require that dynamic sealing material has excellent self-lubricating
Property, i.e. friction factor is small, while requires excellent wearability, heat resistance and dimensional stability.Polytetrafluoroethylene (PTFE)（PTFE）
It is optimal Stirling dynamic sealing basic material.PTFE has good lubricity, extremely low surface energy and excellent resistance to height
Cryogenic property and resist chemical performance, but there is also some defects, as wear-resisting property is poor, linear expansion coefficient is big, easy creep, easily
Cold flow etc..By filling filler, the friction and wear behavior of PTFE is can obviously improve, this also becomes current Stirling engine with close
The main research and development direction of closure material.
Polyphenylene sulfide（PPS）Molecular structure is made of the phenyl ring of rigid structure and the thioether bond of flexible structure, has corrosion resistant
Erosion, radiation hardness, endurance, abrasion resistance properties are excellent and the characteristics such as linear expansion coefficient is low, are that the excellent filling of polytetrafluoroethylene (PTFE) changes
Property agent.With the development of nanometer technology, the application of polymer nanocomposites is more and more extensive.Nano-particle is as polymer
Filler can also play the role of good anti-friction wear-resistant.
The content of the invention
The purpose of the invention is to improve the hardness of ptfe composite and wearability, a kind of polyphenyl is devised
Thioether and nanometer Al2O3Filled polytetrafluoroethylene composite material.
The technical solution adopted by the present invention to solve the technical problems is：
Polyphenylene sulfide and nanometer Al2O3The raw material for preparing of filled polytetrafluoroethylene composite material includes：Polytetrafluoroethylene (PTFE)（PTFE）：
Trade mark POLYLON M-18F, apparent density are about 0.47g/ml, 38 μm of average grain diameter, the production of Daikin Co., Ltd.；Polyphenyl
Thioether（PPS）：Trade mark P0833A, density 2.12g/cm3, the production of Polyplastics company；Nano-aluminium oxide（Nano-
Al2O3）：Average grain diameter 50-100nm, specific surface area 180m2/ g, the production of Zhejiang Hong Sheng materials Science and Technology Co., Ltd..
Polyphenylene sulfide and nanometer Al2O3The preparation process of filled polytetrafluoroethylene composite material is：By PTFE, PPS, Nano-
Al2O3Uniformly mixed in high speed machine blender by a certain percentage, the cold moudling under 45MPa, after the demoulding in sintering furnace with
Certain procedures are sintered 6h, and it is spare to be finally polished into sample by cooled to room temperature for the sample sintered.
Polyphenylene sulfide and nanometer Al2O3The detecting step of filled polytetrafluoroethylene composite material is：Hardness test：Using
XHSD types Shore durometer presses the shore hardness of GB/T531-1999 test samples.Analysis of Surface Topography：Using JSM-5600LV
Scanning electron microscope（SEM）Analysis of Surface Topography is carried out to wear surface, antithesis surface.Friction-wear test：Using domestic
MRH3 type rings-block testing machine, experiment condition are room temperature, dry friction, load 200N, linear speed 2m/s, wearing- in period 1h, and antithesis is
GCr15 steel loops.Before and after experiment, all samples are cleaned by ultrasonic with acetone soln, drying, the electronic balance for being 0.1mg with precision
It weighs.Antithesis steel loop surface is wiped with acetone cotton balls, removes surface and oil contaminant, eliminates influence of the greasy dirt to friction.Each group of friction
Wear test is repeated 3 times, and is averaged.Friction factor is averaged according to the data that computer records.
The beneficial effects of the invention are as follows：
PPS and nanometer Al2O3The hardness of composite material can be improved, and all with the increase of additive amount, the hardness of composite material
Gradually increase.The addition of PPS can be effectively improved the wearability of PTFE, when PPS mass fractions are 5%, PPS/PTFE composite materials
Volume erosion rate it is minimum；When PPS contents continue increase, Volume erosion rate gradually increases, but wearability is superior to pure PTFE；
Nanometer Al2O3Addition can be effectively improved the wearabilities of PPS/PTFE blends, nanometer Al2O3When mass fraction is 5%,
Al2O3The Volume erosion rate of/PPS/PTFE composite materials is only 3.41x10-6mm3/ (Nm), the purer PTFE of wearability are improved
276 times.The addition of PPS has effectively mitigated the plastic deformation of material wear surface, and so that the fibrosis of PTFE is had
Effect inhibits, and the degree of wear reduces；Nanometer Al2O3Addition be effectively improved the surface anti-shear ability of composite material, abrasion is big
Amplitude improves, and transfer membrane is smooth, uniform and smooth, is conducive to the raising of composite material greasy property.Under room temperature friction condition,
PTFE/PPS/PTFE, nanometer Al2O3The wear mechanism of/PPS/PTFE is mainly adhesive wear.At 150 DEG C, nanometer Al2O3/
The wear mechanism of PPS/PTFE is mainly adhesive wear and abrasive wear.
Specific embodiment
Case study on implementation 1：
Polyphenylene sulfide and nanometer Al2O3The raw material for preparing of filled polytetrafluoroethylene composite material includes：Polytetrafluoroethylene (PTFE)（PTFE）：
Trade mark POLYLON M-18F, apparent density are about 0.47g/ml, 38 μm of average grain diameter, the production of Daikin Co., Ltd.；Polyphenyl
Thioether（PPS）：Trade mark P0833A, density 2.12g/cm3, the production of Polyplastics company；Nano-aluminium oxide（Nano-
Al2O3）：Average grain diameter 50-100nm, specific surface area 180m2/ g, the production of Zhejiang Hong Sheng materials Science and Technology Co., Ltd..Polyphenyl
Thioether and nanometer Al2O3The preparation process of filled polytetrafluoroethylene composite material is：By PTFE, PPS, Nano-Al2O3By certain
Ratio uniformly mixes in high speed machine blender, and the cold moudling under 45MPa is burnt after the demoulding in sintering furnace with certain procedures
6h is tied, it is spare to be finally polished into sample by cooled to room temperature for the sample sintered.Polyphenylene sulfide and nanometer Al2O3Filling is poly-
The detecting step of tetrafluoroethene composite material is：Hardness test：It is tested using XHSD types Shore durometer by GB/T531-1999
The shore hardness of sample.Analysis of Surface Topography：Using JSM-5600LV scanning electron microscope（SEM）To wear surface, antithesis
Surface carries out Analysis of Surface Topography.Friction-wear test：Using domestic MRH3 type rings-block testing machine, experiment condition is room temperature, is done
Friction, load 200N, linear speed 2m/s, wearing- in period 1h, antithesis are GCr15 steel loops.Before and after experiment, all samples are molten with acetone
Liquid is cleaned by ultrasonic, drying, the scales/electronic balance weighing for being 0.1mg with precision.Antithesis steel loop surface is wiped with acetone cotton balls, removes table
Face greasy dirt eliminates influence of the greasy dirt to friction.Each group of friction-wear test is repeated 3 times, and is averaged.Friction factor is according to meter
The data of calculation machine record are averaged.
Case study on implementation 2：
Hardness with the increase composite material of PPS contents gradually increases, and it is the most apparent to promote effect for hardness when filling 5%.With
Nanometer Al2O3Gradual increased trend is also presented in the increase of content, the hardness of composite material.Because PPS and nanometer Al2O3Hardness
With modulus all higher than PTFE, therefore the hardness of composite material is improved.The raising of composite hardness helps to promote composite wood
The anti-shear ability and creep resisting ability of material.With the increase of PPS contents, increased trend after first reduction is presented in friction factor.
For the pure PTFE material not containing PPS, friction factor 0.275；When the mass fraction of PPS is 5%, friction factor drop
Down to 0.23；With the further increase of PPS contents, the friction factor of composite material gradually rises, when PPS mass fractions increase
During to 20%, the friction factor of composite material is increased to 0.253, but is still below being not added with the friction factor of the pure PTFE of PPS.With
The increase of PPS contents, increased variation tendency after first reducing also is presented in the wearability of composite material.For pure PTFE,
Due to special C-F molecular chain structures so that strand is also easy to produce interlayer slip, causes apparent creep, therefore wearability compared with
Difference, Volume erosion rate 9.42x10-4mm3/(N·m)；After the PPS for adding mass fraction 5%, the wear rate of composite material is
4.19x10-4Mm3/ (Nm), the wearability of composite material improve 2 times；With the further increase of PPS contents, composite material
Wearability constantly reduce, until PPS mass fractions be 20% when, Volume erosion rate reaches 7.22x10-4mm3/(N·m).PPS by
In the stiff chain structure with phenyl ring and thioether bond composition, the additive amount in PTFE is relatively low（Mass fraction 5%）When, because PPS compared with
High strength and stiffness preferentially assume responsibility for external applied load, while rigid molecule chain can play skeleton to the molecular chain structure of PTFE
Supporting role reduces the direct abrasion of PTFE, plays the role of anti-friction wear-resistant.When the content of PPS gradually increases, although
PPS plays the role of a degree of skeletal support, but the entanglement of rigid molecule chain can gradually destroy PTFE compliance and
The continuity of matrix increases so as to cause friction factor.Meanwhile the increase of PPS contents, cause the rigid molecule chain of wear surface
Increase, frictional heat rise, although PPS can improve the anti-shear ability of PTFE, under fricting shearing effect, lasting friction
Heat can cause the plastic deformation degree on worn composite surface to increase, so as to the increase of PPS contents, composite material it is resistance to
Mill property continuously decreases again.
Case study on implementation 3：
With nanometer Al2O3The increase of content, the friction factor of composite material gradually increase, as nanometer Al2O3Mass fraction is more than
After 2%, friction factor is basically stable between 0.28-0.285.The trend of first increases and then decreases is presented in Volume erosion rate.Nanometer
Al2O3Presence, hardness, compression strength, modulus and the creep-resistant property of composite material is made to be obtained for raising, PPS is compensated for and holds
The defects of loading capability is insufficient, make the filling of PPS in composite material less than matrix region enhanced.As nanometer Al2O3Quality point
Number is increased to after 2%, since the hard phase in PTFE matrix increases, the sliding of PTFE macromolecular chains is hindered, so that wear-resisting
Property is improved.Work as Al2O3When mass fraction is 5%, wear-resisting property is best, and purer PTFE wearabilities improve 276 times, compared to
PPS/PTFE composite materials, wearability improve 152 times.PPS/PTFE and 5% nanometer of Al at room temperature, 80 DEG C and 150 DEG C2O3/
The friction and wear behavior of PPS/PTFE composite materials gradually increases with the rise of temperature, PPS/PTFE composite material friction factors
Greatly, 5% nanometer of Al2O3The PPS/PTFE composite material friction factors of filling continuously decrease.When temperature is 150 DEG C, 5% nanometer
Al2O3/ PPS/PTFE composite material friction factors reach minimum value 0.245, and PPS/PTFE friction factors reach maximum 0.283.
The above result shows that nanometer Al2O3The PPS/PTFE composite materials of filling, in high temperature environments friction factor be substantially reduced, this can
Can be since under hot environment, the fracture of moieties chain has occurred in PPS, results in the increase of friction factor；Nanometer Al2O3Add
Add, PPS molecule chain breaks can be inhibited, play the role of anti-friction wear-resistant.With the rise of environment temperature, Volume erosion rate is equal
Gradually increased trend is presented.2 kinds of composite materials Volume erosion rate at 150 DEG C is all maximum.In comparison, varying environment temperature
Lower nanometer Al2O3Filling be all effectively improved the wearabilities of PPS/PTFE composite materials.Although this shows PPS rigid molecules
Chain structure can play the role of effective synergistic effect to the chain structure of PTFE, reach anti-friction wear-resistant.But due to point of PPS
Subchain high temperature resistance is limited, since molecule chain break makes it lose the effect of collaboration antifriction under high temperature.Nanometer Al2O3's
Filling, not only makes up the defects of PPS bearing capacitys are insufficient, while can improve the heat resistance of PPS and PTFE so that under high temperature
The anti-shear ability and non-deformability of composite material are greatly improved.
Case study on implementation 4：
Serious plastic deformation is presented in the wear surface of pure PTFE, and wear surface is there are apparent fibre bundle, this is because friction
The collective effect of heat and shearing force results in PTFE surface fibers, and abrasion is can be seen that from the SEM patterns on friction pair surface
The part abrasive dust of generation is adhered to tiny particulate form on antithesis surface, forms substantial amounts of aggregation.The addition of PPS is effective
Ground has mitigated the plastic deformation of material wear surface, and the fibrosis of PTFE is effectively suppressed, wear surface
PTFE fiber is unordered in a jumble, and the degree of wear reduces, it can also be seen that the abrasive dust of adherency is presented in various degree in antithesis surface
It reduces.This shows that the addition of PPS effectively improves the microcosmic abrasion modality of PTFE.The PTFE fiber of wear surface disappears, abrasion
Surface becomes coarse, and wear surface presentation significantly sticks together feature, this shows a nanometer Al2O3Addition be effectively improved it is compound
The surface anti-shear ability of material so that the degree of wear significantly improves.In addition, transfer membrane becomes smooth, uniform and smooth,
The formation of even transfer membrane has the raising beneficial to composite material greasy property, this also illustrates Al2O3Addition can improve transfer membrane and
Combination power between antithesis surface, therefore wear surface under the conditions of 150 DEG C of the wearability of composite material can be greatly improved
It is coarse, serious adhesive wear feature is presented, and film surface is shifted there are apparent ditch dug with a plow effect, illustrate wear mechanism to stick together
Abrasion and abrasive wear, this is but also composite-material abrasive reduced performance.
Claims (4)
1. a kind of polyphenylene sulfide and nanometer Al2O3Filled polytetrafluoroethylene composite material, preparing raw material includes：Polytetrafluoroethylene (PTFE)
（PTFE）：Trade mark POLYLON M-18F, apparent density are about 0.47g/ml, and 38 μm of average grain diameter, Daikin Co., Ltd. gives birth to
Production；Polyphenylene sulfide（PPS）：Trade mark P0833A, density 2.12g/cm3, the production of Polyplastics company；Nano-aluminium oxide
（Nano-Al2O3）：Average grain diameter 50-100nm, specific surface area 180m2/ g, the life of Zhejiang Hong Sheng materials Science and Technology Co., Ltd.
Production.
2. polyphenylene sulfide according to claim 1 and nanometer Al2O3Filled polytetrafluoroethylene composite material, it is characterized in that poly-
Diphenyl sulfide and nanometer Al2O3The preparation process of filled polytetrafluoroethylene composite material is：By PTFE, PPS, Nano-Al2O3By one
Certainty ratio uniformly mixes in high speed machine blender, the cold moudling under 45MPa, with certain procedures in sintering furnace after the demoulding
6h is sintered, it is spare to be finally polished into sample by cooled to room temperature for the sample sintered.
3. polyphenylene sulfide according to claim 1 and nanometer Al2O3Filled polytetrafluoroethylene composite material, it is characterized in that poly-
Diphenyl sulfide and nanometer Al2O3The detecting step of filled polytetrafluoroethylene composite material is：Hardness test：It is hard using XHSD type shore
Degree meter is by the shore hardness of GB/T531-1999 test samples, Analysis of Surface Topography：Using JSM-5600LV scanning electron microscopies
Mirror（SEM）Analysis of Surface Topography, friction-wear test are carried out to wear surface, antithesis surface：Using domestic MRH3 type rings-block examination
Machine is tested, experiment condition is room temperature, and dry friction, load 200N, linear speed 2m/s, wearing- in period 1h, antithesis is GCr15 steel loops, is tested
Front and rear, all samples are cleaned by ultrasonic with acetone soln, drying, the scales/electronic balance weighing for being 0.1mg with precision, antithesis steel loop table
Face is wiped with acetone cotton balls, removes surface and oil contaminant, eliminates influence of the greasy dirt to friction, and each group of friction-wear test is repeated 3 times,
It is averaged, friction factor is averaged according to the data that computer records.
4. polyphenylene sulfide according to claim 1 and nanometer Al2O3Filled polytetrafluoroethylene composite material, it is characterized in that PPS
With nanometer Al2O3The hardness of composite material can be improved, and all with the increase of additive amount, the hardness of composite material gradually increases,
The addition of PPS can be effectively improved the wearability of PTFE, when PPS mass fractions are 5%, the volume mill of PPS/PTFE composite materials
Loss rate is minimum；When PPS contents continue increase, Volume erosion rate gradually increases, but wearability is superior to pure PTFE；Nanometer Al2O3
Addition can be effectively improved the wearabilities of PPS/PTFE blends, nanometer Al2O3When mass fraction is 5%, Al2O3/PPS/
The Volume erosion rate of PTFE composite materials is only 3.41x10-6mm3/ (Nm), the purer PTFE of wearability improve 276 times, PPS
Addition effectively mitigated the plastic deformation of material wear surface, and the fibrosis of PTFE is effectively suppressed, grinds
Damage degree reduces；Nanometer Al2O3Addition be effectively improved the surface anti-shear ability of composite material, abrasion significantly improves,
Transfer membrane is smooth, uniform and smooth, is conducive to the raising of composite material greasy property, under room temperature friction condition, PTFE/PPS/
PTFE, nanometer Al2O3The wear mechanism of/PPS/PTFE is mainly adhesive wear, at 150 DEG C, nanometer Al2O3The mill of/PPS/PTFE
Damage mechanism is mainly adhesive wear and abrasive wear.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109320885A (en) * | 2018-10-15 | 2019-02-12 | 上海长园电子材料有限公司 | A kind of modified ptfe hose and preparation method thereof |
| CN111040346A (en) * | 2019-12-20 | 2020-04-21 | 佛山科学技术学院 | Anti-radiation polytetrafluoroethylene composite material and preparation method thereof |
| CN111057373A (en) * | 2019-12-27 | 2020-04-24 | 苏州纳磐新材料科技有限公司 | PPS wear-resistant material and preparation method thereof |
| CN111621108A (en) * | 2020-05-14 | 2020-09-04 | 浙江长盛滑动轴承股份有限公司 | Polymer composite material and preparation method of metal-based net filled polymer soft belt |
| CN117777649A (en) * | 2024-02-26 | 2024-03-29 | 季华实验室 | Self-lubricating composite material with solid-liquid synergistic lubrication and preparation method thereof |
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2016
- 2016-11-24 CN CN201611045071.9A patent/CN108102261A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109320885A (en) * | 2018-10-15 | 2019-02-12 | 上海长园电子材料有限公司 | A kind of modified ptfe hose and preparation method thereof |
| CN111040346A (en) * | 2019-12-20 | 2020-04-21 | 佛山科学技术学院 | Anti-radiation polytetrafluoroethylene composite material and preparation method thereof |
| CN111057373A (en) * | 2019-12-27 | 2020-04-24 | 苏州纳磐新材料科技有限公司 | PPS wear-resistant material and preparation method thereof |
| CN111057373B (en) * | 2019-12-27 | 2022-06-28 | 苏州纳磐新材料科技有限公司 | PPS wear-resistant material and preparation method thereof |
| CN111621108A (en) * | 2020-05-14 | 2020-09-04 | 浙江长盛滑动轴承股份有限公司 | Polymer composite material and preparation method of metal-based net filled polymer soft belt |
| CN111621108B (en) * | 2020-05-14 | 2022-02-18 | 浙江长盛滑动轴承股份有限公司 | Polymer composite material and preparation method of metal-based net filled polymer soft belt |
| CN117777649A (en) * | 2024-02-26 | 2024-03-29 | 季华实验室 | Self-lubricating composite material with solid-liquid synergistic lubrication and preparation method thereof |
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Application publication date: 20180601 |