CN105524292B - Double-deck PTFE resin composite module and preparation method thereof - Google Patents
Double-deck PTFE resin composite module and preparation method thereof Download PDFInfo
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- CN105524292B CN105524292B CN201510738454.3A CN201510738454A CN105524292B CN 105524292 B CN105524292 B CN 105524292B CN 201510738454 A CN201510738454 A CN 201510738454A CN 105524292 B CN105524292 B CN 105524292B
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Abstract
The invention discloses a kind of double-deck PTFE resin composite module, including inner sandwich layer and the external coating of inner core layer surface is sprayed on, the inner sandwich layer is the PTFE resin of glass fiber reinforcement, and the external coating is PEEK/PTFE resins.Also disclose preparation method.The present invention first carries out coarse processing in glass fiber reinforcement PTFE resin Modular surface with sand grains, then after washing with water totally, a thin layer PEEK/PTFE resins are sprayed as external coating, module obtained has excellent mechanical performance, and the glass fibre fracture head on surface is wrapped up by PEEK/PTFE resins, skin-friction coefficient is low, will not scratch the material surface with module contact.It is closer that coarse processed surface makes the external coating of spraying and inner sandwich layer is combined, is not easily stripped between external coating and inner sandwich layer after long-time service.
Description
Technical field
The present invention relates to double-deck PTFE resin composite modules and preparation method thereof, belong to field of compound material.
Background technology
Polytetrafluoroethylene (PTFE) (PTFE) has the characteristics that antiacid alkali resistant, resists various organic solvents, is practically insoluble in all molten
Agent, meanwhile, polytetrafluoroethylene (PTFE) has the characteristics that high temperature resistant, low temperature resistant, and nonflammable, good toughness is widely used in sealing material
And packing material.But compared with other thermoplastic materials, poor with mechanical performance, linear expansion coefficient is larger, and molding shrinkage is big,
The shortcomings of secondary operation is difficult, and hardness is low, and wear resistance is poor, easy-cold flow, poor thermal conductivity limits it extensively to a certain extent
Using.
It was discovered by researchers that glass fibre is added in PTFE can significantly improve the wearability of PTFE resin, drop significantly
Its low abrasion.The High Speed Railway Trains field of 350KM/h is up in speed, due to its excellent mechanical performance, can be used for making
Make sliding block, multiple high speed back and forth movement can be born without generating deformation, do not cracked.But glass fiber reinforcement PTFE trees
The glass fibre fracture head that fat is present in surface can scratch the article surface contacted with resin, and article surface is caused to damage, is influenced
Slide efficiency.
Invention content
The object of the present invention is to provide a kind of double-deck PTFE resin composite modules, have higher hardness and wearability, and
And surface is smooth, is not easy to scratch other article surfaces contacted.
In order to achieve the above objectives, the technical solution adopted by the present invention is：A kind of bilayer PTFE resin composite module, including interior
Sandwich layer and the external coating for being sprayed on inner core layer surface, PTFE resin of the inner sandwich layer for glass fiber reinforcement, the outer painting
Layer is PEEK/PTFE resins.
Preferably, content of glass fiber is 20-25% in the inner sandwich layer, and content of graphite 5-8%, PTFE content is
67-75%.
Preferably, the nanometer Si_3N_4 particle of the PTFE and 3-5% of the PEEK containing 75-82% in the external coating, 15-20%.
Preferably, the glass fibre length is 200 mesh hereinafter, graphite powder diameter is below 460 mesh.
The invention also discloses the preparation method of above-mentioned double-deck PTFE resin composite module, step includes：
A, by after coupling agent and solvent solution-forming, glass fibre is added in, after stirring evenly, is put into drying in drying box,
Then it activates；
B, processing PTFE powder is dried；
C, die-filling after glass fiber reinforcement is mixed with PTFE powder, cold moudling, then sintering curing, is made module；
D, sand grains high pressure is sprayed onto Modular surface, controls sand grains size and speed, module is made to form rough surface；
E, Modular surface with water is purged, is dried after removing sand grains；
F, it by PEEK, after PTFE and the drying of nanometer Si_3N_4 particle powder, is uniformly mixed, is melted at 400-430 DEG C, molten mass
Modular surface is sprayed to by high pressure sprays fog equipment, external coating is formed, controls the thickness of external coating between 300um-500um,
250 DEG C of heat preservation 1-2h, finished product.
Preferably, the coupling agent is silane based coupling agents, and the solvent is ethyl alcohol.
The present invention first carries out coarse processing in glass fiber reinforcement PTFE resin Modular surface with sand grains, then washes with water
After clean, spraying a thin layer PEEK/PTFE resins have excellent mechanical performance, Er Qiebiao as external coating, module obtained
The glass fibre fracture head in face is wrapped up by PEEK/PTFE resins, and skin-friction coefficient is low, will not scratch the material with module contact
Expect surface.It is closer that coarse processed surface makes the external coating of spraying and inner sandwich layer is combined, after long-time service external coating with
It is not easily stripped between inner sandwich layer.External coating uses and is added to nano Si3N4PEEK/PTFE resins, friction coefficient is low, stablize
Friction coefficient is between 1.8-2.0, and the nano Si added3N4Friction chemical reaction can occur in friction process, newly
The generation of compound can increase transfer membrane and the bond strength to rubbing surface so that glass fiber reinforcement PTFE resin module has
There is stronger wear-resisting property.
Specific embodiment
Embodiment 1
The preparation method of this bilayer PTFE resin composite module, step include：
A, by after coupling agent and solvent solution-forming, glass fibre is added in, stirs 30min, is put into drying box and does for 80 DEG C
Then dry 5-6h activates 2h for 105 DEG C；
B, by PTFE powder, the dry 10h of 80 DEG C of powdered graphite；
C, glass fibre, PTFE powder, powdered graphite are pressed 20：75：5 ratio is put into high-speed mixer, high-speed stirred
Die-filling afterwards, cold moudling is suppressed using the method unidirectionally pressurizeed, 100MPa, pressurize is forced into the speed of 5MPa/min
Then 20min is demoulded, sintering curing, and heating rate is 60 DEG C/h, and sintering temperature is 380 DEG C, sintering time 4h；Naturally it drops
The obtained module of temperature；
D, sand grains high pressure is sprayed onto Modular surface, controls sand grains size and speed, module is made to form rough surface；
E, Modular surface with water is purged, is dried after removing sand grains；
F, it by PEEK, after PTFE and the drying of nanometer Si_3N_4 particle powder, is uniformly mixed, is melted at 400-430 DEG C, molten mass
Modular surface is sprayed to by high pressure sprays fog equipment, external coating is formed, controls the thickness of external coating between 300um-500um,
250 DEG C of heat preservation 1-2h, finished product.
Double-deck PTFE resin composite module obtained is tested for the property, test result is shown in Table 1.
Embodiment 2
The preparation method of this bilayer PTFE resin composite module is consistent with embodiment 1, and each group distribution ratio is in inner sandwich layer：
PTFE67%, glass fibre 25%, graphite 8%；Each group distribution ratio is in external coating：PEEK 82%, PTFE 15%, nanometer
Si3N43%.Double-deck PTFE resin composite module obtained is tested for the property, test result is shown in Table 1.
Embodiment 3
The preparation method of this bilayer PTFE resin composite module is consistent with embodiment 1, and each group distribution ratio is in inner sandwich layer：
PTFE72%, glass fibre 22%, graphite 6%；Each group distribution ratio is in external coating：PEEK 78%, PTFE 18%, nanometer
Si3N44%.Double-deck PTFE resin composite module obtained is tested for the property, test result is shown in Table 1.
Above percentage mentioned in the present invention is mass percent.
The double-deck PTFE resin composite module the performance test results of table 1
Remarks：Friction-wear test condition：Initial load 196N, rotating speed 200r/min, dry friction 2h.To emery wheel：45 steel,
42-45HRC。
Claims (6)
1. a kind of bilayer PTFE resin composite module, it is characterised in that：Including inner sandwich layer and it is sprayed on the outer of inner core layer surface
Coating, the inner sandwich layer are the PTFE resin of glass fiber reinforcement, and the external coating is PEEK/ PTFE resins.
2. bilayer PTFE resin composite module according to claim 1, it is characterised in that：Glass fibre in the inner sandwich layer
Content is 20-25%, and content of graphite 5-8%, PTFE content are 67-75%.
3. bilayer PTFE resin composite module according to claim 1, it is characterised in that：Contain 75- in the external coating
The nano Si of the PTFE and 3-5% of 82% PEEK, 15-20%3N4。
4. bilayer PTFE resin composite module according to claim 2, it is characterised in that：The glass fibre length is
200 mesh are hereinafter, graphite powder diameter is below 460 mesh.
5. the preparation method of the double-deck PTFE resin composite module described in any one of claim 2-4, step include：
A, by after coupling agent and solvent solution-forming, glass fibre is added in, after stirring evenly, is put into drying in drying box, then
Activation；
B, processing is dried to PTFE powder, powdered graphite；
C, die-filling after glass fiber reinforcement is mixed with PTFE powder, powdered graphite, cold moudling, then sintering curing, is made
Module；
D, sand grains high pressure is sprayed onto Modular surface, controls sand grains size and speed, module is made to form rough surface；
E, Modular surface with water is purged, is dried after removing sand grains；
F, by PEEK, PTFE and nano Si3N4After powder drying, it is uniformly mixed, is melted at 400-430 DEG C, molten mass passes through height
Pressure spraying device sprays to Modular surface, forms external coating, controls the thickness of external coating between 300 μm -500 μm, 250 DEG C of guarantors
Warm 1-2h, finished product.
6. the preparation method of bilayer PTFE resin composite module according to claim 5, it is characterised in that：The coupling agent
For silane based coupling agents, the solvent is ethyl alcohol.
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| CN201510738454.3A CN105524292B (en) | 2015-11-03 | 2015-11-03 | Double-deck PTFE resin composite module and preparation method thereof |
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|---|---|---|---|
| CN201510738454.3A CN105524292B (en) | 2015-11-03 | 2015-11-03 | Double-deck PTFE resin composite module and preparation method thereof |
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| CN105524292A CN105524292A (en) | 2016-04-27 |
| CN105524292B true CN105524292B (en) | 2018-06-15 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106381537B (en) * | 2016-08-29 | 2018-11-13 | 常州万容新材料科技有限公司 | A kind of manufacturing method of the short fibres of PTFE |
| CN116176020A (en) * | 2022-12-20 | 2023-05-30 | 无锡市中导高新材料有限公司 | Teflon belt production process |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1415662A (en) * | 2002-08-30 | 2003-05-07 | 中国科学院兰州化学物理研究所 | Laminated composite material of polyether ether ketone for strengthening textile of carbon fiber or graphiet fiber |
| CN102206391A (en) * | 2011-05-11 | 2011-10-05 | 复旦大学 | Polytetrafluoroethylene self-reinforced composite material and preparation method thereof |
-
2015
- 2015-11-03 CN CN201510738454.3A patent/CN105524292B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1415662A (en) * | 2002-08-30 | 2003-05-07 | 中国科学院兰州化学物理研究所 | Laminated composite material of polyether ether ketone for strengthening textile of carbon fiber or graphiet fiber |
| CN102206391A (en) * | 2011-05-11 | 2011-10-05 | 复旦大学 | Polytetrafluoroethylene self-reinforced composite material and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| "短玻璃纤维和石墨填充PTFE的摩擦磨损特性研究";单昆仑等;《润滑与密封》;20060530(第177期);第88-90页 * |
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Address after: 211162 Jiangsu, Jiangning District, Binjiang Development Zone, No., Copper Road, No. 18 Applicant after: Nanjing Kent composites Limited by Share Ltd Applicant after: Nanjing CompTECH New Material Co., Ltd. Address before: 211162 Nanjing City, Jiangning Province town, the town of copper, Copper Road, No. 18 Applicant before: Nanjing Kente Composite Material Co., Ltd. Applicant before: Nanjing CompTECH New Material Co., Ltd. |
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