CN107337884A - A kind of nano aluminium oxide and polyether sulfone modified polytetrafluoroethylcomposite composite material and preparation method thereof - Google Patents
A kind of nano aluminium oxide and polyether sulfone modified polytetrafluoroethylcomposite composite material and preparation method thereof Download PDFInfo
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- CN107337884A CN107337884A CN201710543273.4A CN201710543273A CN107337884A CN 107337884 A CN107337884 A CN 107337884A CN 201710543273 A CN201710543273 A CN 201710543273A CN 107337884 A CN107337884 A CN 107337884A
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- polyether sulfone
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- aluminium oxide
- powder
- composite material
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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
- 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
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
-
- 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
-
- 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 belongs to Material Field, discloses a kind of nano aluminium oxide and polyether sulfone modified polytetrafluoroethylcomposite composite material and preparation method thereof.The material by be by polytetrafluorethylepowder powder, nano aluminium oxide and polyether sulfone powder carry out mechanical mixture, cold moudling, high temperature sintering and cool down after form, wherein, the granularity of polytetrafluorethylepowder powder is 30um 100um, density 2.2g/cm3, the granularity of nano aluminium oxide is 10nm 50nm, density 4.0g/cm3, the granularity of polyether sulfone is 30um 50um, density 1.38g/cm3.In the material, Nano filling can just make up the self-defect of high molecular polymer under small scale content, while can farthest maintain the inherent characteristic of matrix material again, and can significantly improve its tribological property.Anti-corrosion material, encapsulant and high-abrasive material can be used as, is adapted to require that wearability is good, coefficient of friction is small, the sealing ring of high temperature resistant, chemical-resistant resistance, bearing insert, valve, pipeline, pump etc..
Description
Technical field
Patent of the present invention is related to Material Field, more particularly to a kind of nano aluminium oxide and polyether sulfone modified Teflon
Composite.
Background technology
Polytetrafluoroethylene (PTFE) (PTFE) is used as a kind of heat-resistant polymer, function admirable, has good self-lubricating property, has
The good reputation of " King ", it is the critical material for being applied to dynamic sealing at present, but it is in use, easy-cold flow, and creep resistant is resistance to
Mill property is poor and rebound performance is poor, causes the sealing reliability of PTFE stuffing materials and life-span to be difficult to meet practical application
Demand, it wears no resistance and cost height constrains its use range.
The content of the invention
The purpose of patent of the present invention is, for existing deficiency, there is provided a kind of nano aluminium oxide and polyether sulfone are modified poly-
Tetrafluoroethene composite, adds filler in polytetrafluoroethylene (PTFE), the defects of improving and overcome pure polytetrafluoroethylene (PTFE), wherein poly-
Ether sulfone (PES) have corrosion-resistant, endurance, it is wear-resisting undermine the good characteristics such as hardness height, and have with other high molecular polymers good
Good compatibility, therefore be largely used to as filler in polymer-filled modification.With the development of nanometer technology, by nanometer material
Material achieves good progress in recent years as packing material modified high-molecular polymer.Research is found, different from conventional filler,
Nano filling can just make up the self-defect of high molecular polymer under small scale content, while can farthest tie up again
The inherent characteristic of matrix material is held, and its tribological property can be significantly improved.
A kind of preparation method of nano aluminium oxide and polyether sulfone modified polytetrafluoroethylcomposite composite material, comprises the following steps：
(1) polytetrafluorethylepowder powder, Nano-sized Alumina Powder, polyether sulfone powder are mixed in proportion, are then placed at a high speed
Uniformly mixed in blender, obtain compound；
(2) by compound obtained by step (1) under 60MPa-80MPa pressure through grinding tool cold moudling, and in 60MPa-
7min-12min is kept under 80MPa pressure, is then stripped；
(3) sample after the demoulding is inserted in high temperature sintering furnace, with 500 DEG C/h-900 DEG C/h heating rates, temperature programming
To 370 DEG C -390 DEG C, 1h-3h is incubated；Naturally cool to room temperature.
In step (1), in polytetrafluorethylepowder powder, Nano-sized Alumina Powder, polyether sulfone mixture of powders, each component quality
Percentage composition is polytetrafluorethylepowder powder 90%-98%, Nano-sized Alumina Powder 1%-5%, polyether sulfone powder 1%-5%.
In step (1), described polytetrafluoroethylene (PTFE) granularity is 30um-100um, density 2.2g/cm3；Polyether sulfone granularity
For 30um-50um, density 1.38g/cm3；Nano oxidized aluminium particle size is 10nm-50nm, density 4.0g/cm3。
In step (1), the mixed uniformly time is 20min-30min in high speed blender.
Nano aluminium oxide and polyether sulfone modified polytetrafluoroethylcomposite composite material prepared by the present invention, average abrasion amount 4.23
~9.36mm3, unit wear rate is 1.26~4.23 × 10^5mm3/ NM, modulus of elasticity are 380.35~450.75MPa.This
Invention has the beneficial effect that：
(1) Nano-sized Alumina Powder of patent addition of the present invention, can cause grain refinement mechanism and a large amount of nano-sized carbons
SiClx powder dislocation forms strengthening mechanism, improves the mechanical property of material, mechanical performance, yield strength, tensile property.
(2) polyether sulfone (PES) of patent of the present invention addition, there is corrosion-resistant, endurance, wear-resisting to undermine hardness height etc. excellent
Characteristic, and have good compatibility with polytetrafluoroethylene (PTFE) (PTFE), the characteristic of pure PTFE anti-wear difference is compensate for, is improved
The mechanical performance and tribological property of material.
Embodiment
Embodiment 1
(1) it is 3% Nano-sized Alumina Powder (granularity 30nm), 3% polyether sulfone powder (granularity 40um) and 94% is poly-
Tetrafluoroethene powder (granularity 70um), which is put into high speed blender, carries out uniformly mixing 25min；(2) gained mixture is existed
Through grinding tool cold moudling under 70MPa pressure, and 10min is kept under 70MPa pressure, be then stripped；(3) by the sample after the demoulding
Insert in high temperature sintering furnace, be heated to 380 DEG C with 700 DEG C/h heating rate, be incubated 2h；(4) room temperature is naturally cooled to.
Embodiment 2
(1) it is 5% Nano-sized Alumina Powder (granularity 50nm), 5% polyether sulfone powder (granularity 50um) and 90% is poly-
Tetrafluoroethene powder (granularity 30um), which is put into high speed blender, carries out uniformly mixing 30min；(2) gained mixture is existed
Through grinding tool cold moudling under 80MPa pressure, and 12min is kept under 80MPa pressure, be then stripped；(3) by the sample after the demoulding
Insert in high temperature sintering furnace, be heated to 390 DEG C with 900 DEG C/h heating rate, be incubated 3h；(4) room temperature is naturally cooled to.
Embodiment 3
(1) it is 1% Nano-sized Alumina Powder (granularity 10nm), 1% polyether sulfone powder (granularity 30um) and 98% is poly-
Tetrafluoroethene powder (granularity 100um), which is put into high speed blender, carries out uniformly mixing 20min；(2) gained mixture is existed
Through grinding tool cold moudling under 60MPa pressure, and 12min is kept under 60MPa pressure, be then stripped；(3) by the sample after the demoulding
Insert in high temperature sintering furnace, be heated to 370 DEG C with 500 DEG C/h heating rate, be incubated 1h；(4) room temperature is naturally cooled to.
Embodiment 4
(1) pure polytetrafluorethylepowder powder (granularity 100um) is put into being stirred inside high speed agitator and uniformly mixed
Close 20min；(2) by gained mixture under 60MPa pressure through grinding tool cold moudling, and keep 7min under 60MPa pressure, so
After be stripped；(3) sample after the demoulding is inserted in high temperature sintering furnace, is heated to 370 DEG C with 500 DEG C/h heating rate, insulation
1h；(4) room temperature is naturally cooled to.
Through experiment, 4 example resulting materials more than, draw and be not added with Nano-sized Alumina Powder and polyether sulfone powder
Polytetrafluoroethylene (PTFE) compared with it with the addition of the polytetrafluoroethylene (PTFE) of Nano-sized Alumina Powder and polyether sulfone powder, its anti-wear performance carries
For height more than 100 times, heatproof may be up to more than 300 DEG C.
Following table gives the materials'use different weight percentage composition Nano-sized Alumina Powder and polyether sulfone powder of 4 implementation
Performance change situation.As can be seen from the table, with the increasing of Nano-sized Alumina Powder and polyether sulfone powder weight percentage composition,
Its anti-wear performance also improves therewith.
Claims (6)
- A kind of 1. preparation method of nano aluminium oxide and polyether sulfone modified polytetrafluoroethylcomposite composite material, it is characterised in that including Following steps：(1) polytetrafluorethylepowder powder, Nano-sized Alumina Powder, polyether sulfone powder are mixed in proportion, is then placed in and is blended at a high speed Uniformly mixed in machine, obtain compound；(2) compound obtained by step (1) is pressed under 60MPa-80MPa pressure through grinding tool cold moudling, and in 60MPa-80MPa Strong lower holding 7min-12min, is then stripped；(3) sample after the demoulding is inserted in high temperature sintering furnace, temperature programming is incubated 1h-3h to 370 DEG C -390 DEG C；Naturally it is cold But room temperature is arrived.
- 2. the preparation side of a kind of nano aluminium oxide according to claim 1 and polyether sulfone modified polytetrafluoroethylcomposite composite material Method, it is characterised in that in step (1), in polytetrafluorethylepowder powder, Nano-sized Alumina Powder, polyether sulfone mixture of powders, each group It is polytetrafluorethylepowder powder 90%-98%, Nano-sized Alumina Powder 1%-5%, polyether sulfone powder 1%- to divide weight/mass percentage composition 5%.
- 3. the preparation side of a kind of nano aluminium oxide according to claim 1 and polyether sulfone modified polytetrafluoroethylcomposite composite material Method, it is characterised in that in step (1), described polytetrafluoroethylene (PTFE) granularity is 30um-100um, density 2.2g/cm3；Polyethers Sulfone granularity is 30um-50um, density 1.38g/cm3；Nano oxidized aluminium particle size is 10nm-50nm, density 4.0g/cm3。
- 4. the preparation side of a kind of nano aluminium oxide according to claim 1 and polyether sulfone modified polytetrafluoroethylcomposite composite material Method, it is characterised in that in step (1), the mixed uniformly time is 20min-30min in high speed blender.
- 5. the preparation side of a kind of nano aluminium oxide according to claim 1 and polyether sulfone modified polytetrafluoroethylcomposite composite material Method, it is characterised in that the heating rate of described program heating is 500 DEG C/h-900 DEG C/h.
- 6. a kind of nano aluminium oxide and polyether sulfone modified polytetrafluoroethylcomposite composite material, it is characterised in that be by claim 1 Made from~5 preparation methods, average abrasion amount is 4.23~9.36mm3, unit wear rate is 1.26~4.23 × 10^ 5mm3/ NM, modulus of elasticity are 380.35~450.75MPa.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108752941A (en) * | 2018-05-09 | 2018-11-06 | 徐州东鑫铸造有限公司 | A kind of bearing seal loop material and preparation method thereof |
| CN109825014A (en) * | 2019-03-19 | 2019-05-31 | 中国科学院兰州化学物理研究所 | A kind of high elastic modulus polytetrafluoroethylene (PTFE) friction material and its preparation method and application |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1740226A (en) * | 2005-09-14 | 2006-03-01 | 南京航空航天大学 | Compound PTFE material with low friction and high wear resistance and its prepn process |
| CN101126417A (en) * | 2007-09-11 | 2008-02-20 | 嘉兴中达自润轴承工业有限公司 | Self-lubricating sliding bearing material and its preparation method |
| CN102767570A (en) * | 2012-07-31 | 2012-11-07 | 刘利利 | Manufacturing process of elastic metal-plastic composite material bearing |
-
2017
- 2017-07-05 CN CN201710543273.4A patent/CN107337884A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1740226A (en) * | 2005-09-14 | 2006-03-01 | 南京航空航天大学 | Compound PTFE material with low friction and high wear resistance and its prepn process |
| CN101126417A (en) * | 2007-09-11 | 2008-02-20 | 嘉兴中达自润轴承工业有限公司 | Self-lubricating sliding bearing material and its preparation method |
| CN102767570A (en) * | 2012-07-31 | 2012-11-07 | 刘利利 | Manufacturing process of elastic metal-plastic composite material bearing |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108752941A (en) * | 2018-05-09 | 2018-11-06 | 徐州东鑫铸造有限公司 | A kind of bearing seal loop material and preparation method thereof |
| CN109825014A (en) * | 2019-03-19 | 2019-05-31 | 中国科学院兰州化学物理研究所 | A kind of high elastic modulus polytetrafluoroethylene (PTFE) friction material and its preparation method and application |
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