CN1760259A - Method for preparing composite material based on Teflon enhanced by dense fibers - Google Patents
Method for preparing composite material based on Teflon enhanced by dense fibers Download PDFInfo
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- CN1760259A CN1760259A CN 200510061455 CN200510061455A CN1760259A CN 1760259 A CN1760259 A CN 1760259A CN 200510061455 CN200510061455 CN 200510061455 CN 200510061455 A CN200510061455 A CN 200510061455A CN 1760259 A CN1760259 A CN 1760259A
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Abstract
A fiber reinforced PTFE-based composition with compact structure and high interface adhesion is prepared through preparing the fiber reinforced PTFE-based composite with high porosity by sintering, putting it in mould, filling proper liquid-phase resin and solidifying.
Description
Technical field
The present invention relates to a kind of novel preparation method of composite material based on Teflon enhanced by dense fibers.
Background technology
Teflon resin (hereinafter to be referred as PTFE) is to be the forties in 20th century that military project and sophisticated industry need a kind of of the fluoro-containing macromolecule material that develop.Its molecular structure is simple, unbranched, good linearity, the bond energy height of fluorine carbon bond, thereby heat-resisting, resistance to chemical attack that has that a lot of other synthetic resins hardly matches and excellent characteristics such as dielectric properties.Since Americanized scholar R.J.Plunkett in 1938 synthesized tetrafluoroethylene first, relevant development, production, processing and application development were rapid, have obtained the achievement that attracts people's attention at high-technology fields such as electronics, chemical industry, aviation, machineries.
In recent years, growing along with Materials science, the Application Areas of PTFE is also constantly being expanded expansion, further excavate and utilize the special performance of PTFE, the novel PTFE material of research and development excellent combination property is imperative, and fiber reinforcement PTFE based composites is exactly to be expected to become the representative of application prospect kind is wherein arranged most.But this research is on the one hand made slow progress always, and Shang Weiyou can be used for actual product and occurs, major cause is the problem that has two aspects, the first can only adopt method sinter molding under 〉=350 ℃ high temperature of like powder metallurgy, and technology is very complicated, and the matrix material porosity is big; It two is that interface adhesion is very poor, very easily layering.How to obtain compact structure, to strengthen the PTFE based composites be that pendulum in face of ours is important and be rich in challenging problem to the interface adhesion fiber with excellent.
The present invention fundamentally overcomes existing fiber reinforcement PTFE based composites preparation technology's drawback by adopting liquid phase moulding technology post forming method, develops fine and close and has the close-burning fiber reinforcement PTFE of good interface based composites.
Summary of the invention
The object of the present invention is to provide the preparation method of a kind of feltwork reinforced TFE (PTFE) based composites.
The technical solution adopted for the present invention to solve the technical problems is: the step of this method is as follows:
1) prepare fiber reinforcement tetrafluoroethylene based composites by sintering process, this matrix material has hole;
2) will contain hole tetrafluoroethylene based composites and put into mould, select the resin that meets the liquid phase moulding technology for use, flood containing hole tetrafluoroethylene based composites, then, promptly get fine and close fiber reinforcement tetrafluoroethylene based composites by liquid phase molding technological forming.
Described fiber is any or multiple combination in glass fibre, carbon fiber, aramid fiber or the boron fibre.
Described liquid phase moulding technology is extrusion process and resin molding infiltration process.
Describedly be applicable to that the resin of extrusion process or resin molding infiltration process is unsaturated polyester, Resins, epoxy, properties of diallyl isophathalate resin, bimaleimide resin, cyanate ester resin system and their modified system, and any combination of these resin systems.
The beneficial effect that the present invention has is: the fiber reinforcement polytetrafluoroethylene (PTFE) based composites that is made by the present invention has compact structure, advantage that interface adhesion is good.
Embodiment
Starting material:
1) PTFE: all kinds of PTFE dispersion liquids
2) fiber: each fibrid and arbitrary combination thereof comprise glass fibre, carbon fiber, aramid fiber, boron fibre etc. in interior any or multiple combination.
3) resin: all resin systems that are applicable to extrusion process or resin molding infiltration process resin, as unsaturated polyester, Resins, epoxy, properties of diallyl isophathalate (DAIP) resin, bimaleimide resin (BMI), cyanate ester resin system or the like and their modified system, and any combination of these resin systems.
Embodiment 1:
1) the hole woven fiber glass strengthens the preparation of PTFE based composites: undertaken by the conventional sintering processing step, specific as follows:
A) dipping: glasscloth (trade mark MW-100) at 100 ℃ of dry 30min, is weighed; Use PTFE dispersion liquid (Shanghai three likes that rich (3F) produces trade mark FR303-A) evenly to flood several times then, make glue content be respectively 50～90wt%, i.e. woven fiber glass content 10～50wt%;
B) drying: impregnated fabric is dried 1h 120 ℃ of air blast, and, remove moisture and small molecules fugitive constituent at 200 ℃ of thermal treatment 1h;
C) shop layer: press the careful cutting impregnated fabric of die size, mould is put in layering;
D) cold pressing: mould is put into pressing machine, slowly boost to 30MPa with the speed of 5～10mm/min, pressurize 40min, slowly release again, the demoulding obtains the matrix material parison;
E) sintering: the parison that obtains of will colding pressing is put into muffle furnace, and sintering is carried out by the sintering process of 330 ℃/1h+380 ℃/2h in 30 ℃/h～45 ℃ of slowly heating up/h;
F) cooling: sintering finishes, and is cooled to normal temperature with the rate of cooling of 50 ℃/h, and the woven fiber glass that obtains porosity 31% strengthens the PTFE based composites.
2) the hole woven fiber glass that obtains is strengthened the PTFE based composites, be placed in the mould of compression molding process;
3) Resins, epoxy/anhydride system (as the TDE85/MNA acid anhydrides) of configuring of die casting at room temperature is expelled in the mould;
4) after injection finishes, with the program Solidification of setting: 130 ℃/2h+150 ℃/1h+180 ℃/2h+200 ℃/3h.After finishing, curing naturally cools to room temperature.From mould, take out sample, promptly obtain fine and close fiber reinforcement polytetrafluoroethylene (PTFE) based composites.
Embodiment 2:
1) prepare the hole woven fiber glass by method among the embodiment 1 and strengthen the PTFE based composites, pressing pressure is 20MPa, and all the other conditions are constant, and the woven fiber glass that then makes porosity 14.5% strengthens the PTFE based composites.
2) the hole woven fiber glass that obtains is strengthened the PTFE based composites, be placed in the mould of compression molding process;
3) Resins, epoxy/anhydride system (as the TDE85/MNA acid anhydrides) of configuring of die casting at room temperature is expelled in the mould;
4) after injection finishes, with the program Solidification of setting: 130 ℃/2h+150 ℃/1h+180 ℃/2h+200 ℃/3h.After finishing, curing naturally cools to room temperature.From mould, take out sample, promptly obtain fine and close fiber reinforcement polytetrafluoroethylene (PTFE) based composites.
Embodiment 3:
1) prepare the hole woven fiber glass by method among the embodiment 1 and strengthen the PTFE based composites, pressing pressure is 5MPa, and all the other conditions are constant, and the woven fiber glass that then makes porosity 31% strengthens the PTFE based composites.
2) the hole woven fiber glass that obtains is strengthened the PTFE based composites, be placed in the mould of compression molding process;
3) the BMI resin system (as commodity 4503A) that configures of die casting at room temperature is expelled in the mould;
4) after injection finishes, with the program Solidification of setting: 130 ℃/2h+150 ℃/1h+180 ℃/2h+200 ℃/12h.After finishing, curing naturally cools to room temperature.From mould, take out sample, promptly obtain the fiber reinforcement polytetrafluoroethylene (PTFE) based composites of C densification
Embodiment 4:
1) prepares the hole woven fiber glass by method among the embodiment 3 and strengthen the PTFE based composites, but woven fiber glass is handled through silane coupling agent SG-Si900 (Nanjing Shuguang Chemical General Plant's production), the SFN-1 that the PTFE dispersion liquid is produced for Sichuan morning twilight, all the other conditions are constant, and the woven fiber glass that then makes porosity about 30% strengthens the PTFE based composites.
2) woven fiber glass with the porosity that obtains about 30% strengthens the PTFE based composites, is placed in the mould of compression molding process;
3) the BMI resin system (as commodity 4503A) that configures of die casting at room temperature is expelled in the mould;
4) after injection finishes, with the program Solidification of setting: 130 ℃/2h+150 ℃/1h+180 ℃/2h+200 ℃/12h.After finishing, curing naturally cools to room temperature.From mould, take out sample, promptly obtain fine and close fiber reinforcement polytetrafluoroethylene (PTFE) based composites.
Embodiment 5:
1) woven fiber glass for preparing porosity about 30% by method among the embodiment 4 strengthens the PTFE based composites
2) the DAIP resin system that configures of die casting at room temperature is expelled in the mould;
3) after injection finishes, with the program Solidification of setting: 125 ℃/12h+150 ℃/3h+170 ℃/7h.After finishing, curing naturally cools to room temperature.From mould, take out sample, fine and close fiber reinforcement polytetrafluoroethylene (PTFE) based composites.
Embodiment 6:
1) woven fiber glass for preparing porosity about 30% by method among the embodiment 4 strengthens the PTFE based composites;
2) the BMI resin molding is put in the mould of resin molding infiltration process;
3) the hole woven fiber glass is strengthened the PTFE based composites put in the mould and be placed directly in resin molding above;
4) with the localized vacuum bag sealing of sealing die cavity.Use a baking oven for heating then, molten resin.Resin is permeable fiber layer after fixing under vacuum action, and curing process is 130 ℃/1h+150 ℃/1h+180 ℃/2h+200 ℃/2h+220 ℃/6h.After finishing, curing naturally cools to room temperature.From mould, take out sample, promptly obtain fine and close glass cloth reinforced teflon (PTFE) based composites.
Embodiment 7:
1) carbon fiber for preparing porosity 14.5% by the method among the embodiment 2 strengthens the PTFE based composites;
2) the BMI resin molding is put in the mould of resin molding infiltration process, be expelled in the mould;
3) carbon fiber of porosity 14.5% is strengthened the PTFE based composites put in the mould and be placed directly in resin molding above;
4) with the localized vacuum bag sealing of sealing die cavity.Use a baking oven for heating then, molten resin.Resin is permeable fiber layer after fixing under vacuum action, and curing process is 130 ℃/1h+150 ℃/1h+180 ℃/2h+200 ℃/2h+220 ℃/6h.After finishing, curing naturally cools to room temperature.From mould, take out sample, promptly obtain fine and close carbon fiber reinforced ptfe (PTFE) based composites.
Claims (4)
1, the preparation method of composite material based on Teflon enhanced by dense fibers is characterized in that the step of this method is as follows:
1) prepare fiber reinforcement tetrafluoroethylene based composites by sintering process, this matrix material has hole;
2) will contain hole tetrafluoroethylene based composites and put into mould, select the resin that meets the liquid phase moulding technology for use, flood containing hole tetrafluoroethylene based composites, then, promptly get fine and close fiber reinforcement tetrafluoroethylene based composites by liquid phase molding technological forming.
2, the preparation method of composite material based on Teflon enhanced by dense fibers according to claim 1 is characterized in that: described fiber is any or multiple combination in glass fibre, carbon fiber, aramid fiber or the boron fibre.
3, the preparation method of composite material based on Teflon enhanced by dense fibers according to claim 1 is characterized in that: described liquid phase moulding technology is extrusion process and resin molding infiltration process.
4, the preparation method of composite material based on Teflon enhanced by dense fibers according to claim 1, it is characterized in that: describedly be applicable to that the resin of extrusion process or resin molding infiltration process is unsaturated polyester, Resins, epoxy, properties of diallyl isophathalate resin, bimaleimide resin, cyanate ester resin system and their modified system, and any combination of these resin systems.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2005100614555A CN1333010C (en) | 2005-11-07 | 2005-11-07 | Method for preparing composite material based on Teflon enhanced by dense fibers |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2005100614555A CN1333010C (en) | 2005-11-07 | 2005-11-07 | Method for preparing composite material based on Teflon enhanced by dense fibers |
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| CN1760259A true CN1760259A (en) | 2006-04-19 |
| CN1333010C CN1333010C (en) | 2007-08-22 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103642160A (en) * | 2013-10-31 | 2014-03-19 | 陈潜 | Modified plastic and preparation method |
| CN106519829A (en) * | 2016-08-31 | 2017-03-22 | 慈溪市耀辉厨具有限公司 | Non-stick pan paint and preparation method thereof |
| CN108998975A (en) * | 2018-06-28 | 2018-12-14 | 滁州市经纬装备科技有限公司 | A kind of preparation method of the radome containing skin covering of the surface for protecting radar signal receiver |
| CN109280302A (en) * | 2018-09-30 | 2019-01-29 | 郑州大学 | A kind of preparation method and product of fiber reinforcement fluororesin compound film material |
| CN109676950A (en) * | 2018-12-27 | 2019-04-26 | 南京菲锐迪新材料科技有限公司 | A kind of novel resin-based composite material |
| CN113665141A (en) * | 2021-10-20 | 2021-11-19 | 北京玻钢院复合材料有限公司 | High silica cloth reinforced polytetrafluoroethylene composite material, preparation method and application thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10349414B4 (en) * | 2003-10-21 | 2006-03-23 | Carl Freudenberg Kg | Process for the production of molded articles from non-woven reinforced PTFE |
-
2005
- 2005-11-07 CN CNB2005100614555A patent/CN1333010C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103642160A (en) * | 2013-10-31 | 2014-03-19 | 陈潜 | Modified plastic and preparation method |
| CN106519829A (en) * | 2016-08-31 | 2017-03-22 | 慈溪市耀辉厨具有限公司 | Non-stick pan paint and preparation method thereof |
| CN108998975A (en) * | 2018-06-28 | 2018-12-14 | 滁州市经纬装备科技有限公司 | A kind of preparation method of the radome containing skin covering of the surface for protecting radar signal receiver |
| CN109280302A (en) * | 2018-09-30 | 2019-01-29 | 郑州大学 | A kind of preparation method and product of fiber reinforcement fluororesin compound film material |
| CN109280302B (en) * | 2018-09-30 | 2021-07-23 | 郑州大学 | Preparation method and product of fiber-reinforced fluororesin composite membrane material |
| CN109676950A (en) * | 2018-12-27 | 2019-04-26 | 南京菲锐迪新材料科技有限公司 | A kind of novel resin-based composite material |
| CN109676950B (en) * | 2018-12-27 | 2021-03-30 | 南京腾逸新材料科技有限公司 | Resin-based composite material |
| CN113665141A (en) * | 2021-10-20 | 2021-11-19 | 北京玻钢院复合材料有限公司 | High silica cloth reinforced polytetrafluoroethylene composite material, preparation method and application thereof |
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| CN1333010C (en) | 2007-08-22 |
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Assignee: Jiaxing Xindalu Machinery & Electronic Co., Ltd. Assignor: Zhejiang University Contract fulfillment period: 2009.9.14 to 2014.9.13 contract change Contract record no.: 2009330002400 Denomination of invention: Method for preparing composite material based on Teflon enhanced by dense fibers Granted publication date: 20070822 License type: Exclusive license Record date: 2009.9.27 |
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Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2009.9.14 TO 2014.9.13; CHANGE OF CONTRACT Name of requester: JIAXING CITY XINDALU ELECTROMECHANICAL CO., LTD. Effective date: 20090927 |
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Granted publication date: 20070822 Termination date: 20131107 |