CN103552331B - A kind of preparation method of the toughness reinforcing prepreg of thermoplastic resin superfine fibre film - Google Patents
A kind of preparation method of the toughness reinforcing prepreg of thermoplastic resin superfine fibre film Download PDFInfo
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- CN103552331B CN103552331B CN201310511218.9A CN201310511218A CN103552331B CN 103552331 B CN103552331 B CN 103552331B CN 201310511218 A CN201310511218 A CN 201310511218A CN 103552331 B CN103552331 B CN 103552331B
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Abstract
The invention belongs to material prepreg preparation field, the preparation method relating to a kind of toughness reinforcing prepreg of thermoplastic resin superfine fibre film with toughening functions。Toughened With High Performance Thermoplastics agent is obtained, through electrostatic spinning process, the thermoplastic resin superfine fibre that diameter is 100～5000nm by the present invention, and this fiber is directly sprayed in enhanced fabrics surface, thus forming one layer of toughening layer being made up of random, the uniform thermoplastic resin fibre of surface density in fabric surface, and make its one entirety of composition that adheres to each other with fabric by course of hot rolling, more namely prepare into the toughness reinforcing prepreg product of thermoplastic resin superfine fibre film with prepreg resin matrix compound by having the fabric product of toughening functions。Present invention process process is simply easily implemented, and can realize the continuous prodution of high tenacity prepreg, substantially increases production efficiency。
Description
Technical field
The invention belongs to material prepreg preparation field, relate to the prepreg preparation method that a kind of thermoplastic resin superfine fibre film with toughening functions is toughness reinforcing。
Background technology
Fiber-reinforced resin matrix compound material is due to its specific strength, the feature such as specific stiffness is higher, have good fatigue crack-resistant performance, structure designability is strong, environmental resistance is superior, and becomes the fourth-largest Aircraft Structure Materials after aluminium alloy, steel, titanium alloy。In aircraft industry, composite particularly carbon fibre composite is largely used to time bearing member already, also occupies increasing proportion at present in the main load-bearing parts such as the wing of aircraft, fuselage。The common defects of this type of material is that toughness is relatively low, shows as anti-low-velocity impact damage performance not good, constrains the further expansion of its range of application, therefore improves the toughness of composite, be always up the study hotspot in this field for a long time。
For solving this problem, have been presented for multiple corrective measure, traditional widely used thermoplastic component of composite material toughening method carries out toughness reinforcing, modifying agent thermoplastic resin is added directly in resin matrix and reaches toughness reinforcing purpose, but this method may be significantly increased the viscosity of resin matrix, and then reduce composite intermediate products prepreg processing performance, as the feel stickiness of prepreg, the Ke Pu property covered, curing process tolerance etc.。
For obtaining method for toughening more efficient, rational, home and abroad scholar has carried out substantial amounts of research, and the toughening technology that application is comparatively ripe at present surely belongs to the interlayer toughened technology proposed by Cytec company。Toughness material is inserted composite interlayer by interlayer toughened exactly with some form, hinders the extension of Interlaminar Crack by improving interlayer plastic region, and then improves interlaminar fracture toughness and the shock resistance of composite。Thermoplastic film is laid in the interlayer of reinforced fabric to reach toughness reinforcing purpose by Chinese patent ZL2006100993819, and the CAI of its toughening composition is significantly improved。Interlayer toughened technology can increase substantially the toughness of composite and it is critical only that the selection of interlayer toughened material, progress along with technology, develop the interlayer toughened material of various ways, wherein the interlayer toughened materials application of membrane structure form is the most extensive, but the interlayer toughened form of membrane structure yet suffers from great number of issues, as thermoplastic film can be limited in composite material shaping process the reallocation etc. of the eliminating of bubble, between layers resin。And traditional interlayer toughened method is all as an independent individuality using toughening material, manually the method such as lay is inserted into reinforcing material interlayer, technical process is relatively complicated, inefficient, and toughening material is mainly thermoplastic resin elements, can spread and cover poor-performing, have a strong impact on the processing performance in composite preparation process。
Summary of the invention
It is an object of the invention to: propose a kind of preparation method spreading and covering the thermoplastic resin superfine fibre film toughening composition prepreg that performance is good, ventilative, seep through is good。
The technical scheme is that
(1) selecting thermoplastic resin as toughener, by thermoplastic resin section or pulverizing, be subsequently placed in drying baker, dry 1～2h at 80～100 DEG C, to remove moisture therein；
(2) dried thermoplastic resin is added good solvent, prepare into thermoplastic resin solution；
(3) thermoplastic resin solution utilizing electrospinning process be sprayed at enhanced fabrics surface, forms random, the uniform thermoplastic resin fibre's toughening layer of surface density, toughening layer surface density controls at 5～30g/m2Between；
(4) area load have the enhanced fabrics of toughening layer, hot rolled roller hot pressing make toughening layer constitute entirety, i.e. an elasticized fabric with fabric；
(5) by elasticized fabric through drying oven, the solvent in toughening layer is volatilized completely；
(6) by hot rolling, dried fabric and prepreg glued membrane compound, and make prepreg glued membrane resin sized reinforcing fibres fabric through heat pressing process, prepare prepreg。
Described toughener is one of following thermoplastic resin: polyether-ether-ketone, polyether-ketone, polysulfones, polyether sulfone, thermoplastic resin polyimides, Polyetherimide, polyphenylene oxide, polyamide, polyolefin。
Described thermoplastic resin superfine fibre diameter control is between 100～5000nm。
Described fabric is the one in glass fibre or carbon fiber or aramid fiber, and its weaving form is one-way fabric or plain cloth or satin fabric or twills or laminated cloth or non-flexing fabric。
Described prepreg glued membrane matrix is one of following resins: epoxy resin-base and with the blend of thermoplastic resin, bimaleimide resin base body and with the blend of thermoplastic resin, polyimide resin based body and with the blend of thermoplastic resin, phenolic resin as matrix resin and with the blend of thermoplastic resin, benzoxazine resins matrix and with the blend of thermoplastic resin, cyanate ester resin matrix and the blend with thermoplastic resin thereof。
Described preparation completes the upper and lower surface of prepreg has processing release paper, polyethylene film as protective layer。
The invention have the advantage that
What the present invention proposed obtains diameter by Toughened With High Performance Thermoplastics agent through electrostatic spinning process is the thermoplastic resin fibre of 100～5000nm, and this fiber is directly sprayed in enhanced fabrics surface, thus forming one layer of toughening layer being made up of random, the uniform thermoplastic resin fibre of surface density in fabric surface, and make its one entirety of composition that adheres to each other with fabric by course of hot rolling, more namely prepare into the toughness reinforcing prepreg product of thermoplastic resin superfine fibre film with prepreg resin matrix compound by having the fabric product of toughening functions。The present invention can be greatly improved the preparation efficiency of toughness reinforcing prepreg, and can realize serialization commercial production。The Reinforced structure of the high tenacity prepreg of preparation is uniform loose structure, breathability, seep through are functional, do not affect the exhaust process in curing molding, the reallocation of resin between layers is affected less, and toughening material outer layer still with the good thermosetting resin component of the paving property covered, does not affect the processing performances such as the feel stickiness of prepreg, the Ke Pu property covered。
First this prepreg product has the advantage that, the present invention adopts thermoplastic resin superfine fibre diameter prepared by electrostatic spinning technique thin, is evenly distributed, it is simple to accomplish scale production；Secondly, prepreg product prepared by the method adopts superfine fibre thin film toughness reinforcing, ventilative, seep through is functional, ensure excellent toughness reinforcing while be effective to ensure that composite material forming after internal soundness；Again, prepreg product prepared by the method has good feel stickiness, the Ke Pu property covered, and has good processing performance；Further, this high tenacity prepreg technology of preparing achieves the toughing ways of composite and combines together with toughening material preparation process, improves the production efficiency of interlayer toughened composite, greatly reduces the cost of labor in interlayer toughened composite material。
Accompanying drawing explanation
Fig. 1 is production procedure schematic diagram of the present invention；
Fig. 2 is product structure schematic diagram of the present invention。
Detailed description of the invention
Below the present invention is described in further details。In the present invention, Toughened With High Performance Thermoplastics agent is obtained, through electrostatic spinning process, the thermoplastic resin superfine fibre 2 that diameter is 100～5000nm, and thermoplastic resin superfine fibre 2 is directly sprayed in enhanced fabrics 1 surface, thus forming one layer on enhanced fabrics 1 surface by random, the toughening layer that the uniform thermoplastic resin superfine fibre 2 of surface density is constituted, and make its one entirety of composition that adheres to each other with enhanced fabrics 1 by course of hot rolling, again namely the enhanced fabrics product with toughening functions is prepared into the toughness reinforcing prepreg of thermoplastic resin superfine fibre film with prepreg resin matrix 3 compound, after polyethylene film 5 is peeled off and be covered with to the processing release paper of prepreg upper surface, rolling obtains upper and lower surface polyethylene film 5, processing release paper 4 is as the high tenacity prepreg product of protective layer。
The preparation method of a kind of thermoplastic resin superfine fibre film toughening composition prepreg, specifically comprises the following steps that
(1) selecting thermoplastic resin as toughener, by thermoplastic resin section or pulverizing, be subsequently placed in drying baker, dry 1-2h at 80-100 DEG C, to remove moisture therein；
(2) dried thermoplastic resin is added good solvent, prepare into thermoplastic resin solution；
(3) thermoplastic resin solution utilizes electrospinning process be sprayed at enhanced fabrics 1 surface, forms random, the uniform thermoplastic resin superfine fibre toughening layer 2 of surface density；
(4) area load have the enhanced fabrics 1 of superfine fibre toughening layer 2, hot rolled roller hot pressing make toughening layer 2 and fabric 1 constitute entirety, i.e. an elasticized fabric；
(5) by the enhanced fabrics 1 of load thermoplastic resin superfine fibre toughening layer 2 through drying oven, the solvent in superfine fibre toughening layer 2 is volatilized completely；
(6) by hot rolling, dried elasticized fabric and prepreg glued membrane resin matrix 3 compound, and resin matrix 3 sized reinforcing fibres fabric 1 and superfine fibre toughening layer 2 are made through heat pressing process；
(7), after peeling off and be covered with polyethylene film 5 by the processing release paper of prepreg upper surface, rolling obtains to upper and lower surface having polyethylene film 5, the processing release paper 4 high tenacity prepreg product as protective layer。
Embodiment 1
Selecting polyamide PA6 as toughener, by PA6 resin slicer or pulverizing, be subsequently placed in drying baker, at 100 DEG C, dry 2h, after removing moisture therein, utilizes formic acid to dissolve the pellet of PA6。Resin solution after dissolving is joined in electrospinning device, utilizes electrospinning process by PA6 sprays resin on carbon fiber one-way fabric U3160 surface, form random, the uniform thermoplastic resin fibre's toughening layer of surface density；Area load have the U3160 carbon fibre fabric of the fiber reinforced layer of ultra-fine PA6 make PA6 superfine fibre toughening layer form an entirety with U3160 enhanced fabrics through the hot roll hot pressing of 80 DEG C, and by toughening carbon fiber reinforced one-way fabric through drying oven, solvent in toughening layer is volatilized after completely, by U3160 toughened fiber fabric and epoxy resin-matrix prepreg glued membrane compound, and make resin sized reinforcing fibres fabric through heat pressing process, after the processing release paper of prepreg upper surface is peeled off and is covered with polyethylene film, rolling obtains high tenacity U3160/ epoxy prepreg product。
Embodiment 2
Selecting polyether sulfone PES as toughener, by PES resin slicer or pulverizing, be subsequently placed in drying baker, at 100 DEG C, dry 2h, after removing moisture therein, utilizes DMF solvent to dissolve the pellet of PES。Resin solution after dissolving is joined in electrospinning device, utilizes electrospinning process by PES sprays resin on T700 carbon fiber one-way fabric U7192 surface, form random, the uniform thermoplastic resin fibre's toughening layer of surface density；Area load have the U7192 carbon fibre fabric of the fiber reinforced layer of ultra-fine PES make PES superfine fibre toughening layer form an entirety with U7192 enhanced fabrics through the hot roll hot pressing of 150 DEG C, and by toughening carbon fiber reinforced one-way fabric through drying oven, solvent in toughening layer is volatilized after completely, by U7192 toughened fiber fabric and bismaleimide resin base prepreg glued membrane compound, and make resin sized reinforcing fibres fabric through heat pressing process, after the processing release paper of prepreg upper surface is peeled off and is covered with polyethylene film, rolling obtains high tenacity U7192/ bismaleimide resin prepreg product。
Embodiment 3
Selecting polyether-ketone (PEK) as toughener, by PEK resin slicer or pulverizing, be subsequently placed in drying baker, at 100 DEG C, dry 2h, after removing moisture therein, utilizes DMF solvent to dissolve the pellet of PEK。Resin solution after dissolving is joined in electrospinning device, utilizes electrospinning process by PEK sprays resin on CCF300 carbon fiber plain cloth CF3031 surface, form random, the uniform thermoplastic resin fibre's toughening layer of surface density；Area load have the CF3031 carbon fibre fabric of the fiber reinforced layer of ultra-fine PEK make PEK superfine fibre toughening layer form an entirety with CF3031 enhanced fabrics through the hot roll hot pressing of 150 DEG C, and by toughening carbon fiber reinforced plain cloth through drying oven, solvent in toughening layer is volatilized after completely, by CF3031 toughened fiber fabric and benzoxazine resins base prepreg glued membrane compound, and make resin sized reinforcing fibres fabric through heat pressing process, after the processing release paper of prepreg upper surface is peeled off and is covered with polyethylene film, rolling obtains high tenacity CF3031/ benzoxazine resins prepreg product。
Embodiment 4
Selecting polyether-ether-ketone (PEEK) as toughener, by PEEK resin slicer or pulverizing, be subsequently placed in drying baker, at 100 DEG C, dry 2h, after removing moisture therein, utilizes oxolane to dissolve the pellet of PEEK。Resin solution after dissolving is joined in electrospinning device, utilizes electrospinning process by PEEK sprays resin on glass fiber cloth SW250 surface, form random, the uniform thermoplastic resin fibre's toughening layer of surface density；Area load have the SW250 glass fiber cloth of the fiber reinforced layer of ultra-fine PEEK make PEEK superfine fibre toughening layer form an entirety with SW250 glass fiber cloth through the hot roll hot pressing of 150 DEG C, and by toughness reinforcing glass fiber cloth through drying oven, solvent in toughening layer is volatilized after completely, by SW250 toughened fiber fabric and cyanate resin base prepreg glued membrane compound, and make resin sized reinforcing fibres fabric through heat pressing process, after the processing release paper of prepreg upper surface is peeled off and is covered with polyethylene film, rolling obtains high tenacity SW250/ cyanate ester resin prepreg product。
Embodiment 5
Selecting polysulfones (PSF) as toughener, by PSF resin slicer or pulverizing, be subsequently placed in drying baker, at 100 DEG C, dry 2h, after removing moisture therein, utilizes DMF solvent to dissolve the pellet of PSF。Resin solution after dissolving is joined in electrospinning device, utilizes electrospinning process by PSF sprays resin on aramid fabric surface, form random, the uniform thermoplastic resin fibre's toughening layer of surface density；Area load have the aramid fabric of the fiber reinforced layer of ultra-fine PSF make PSF superfine fibre toughening layer form an entirety with aramid fabric through the hot roll hot pressing of 150 DEG C, and by toughness reinforcing aramid fabric through drying oven, solvent in toughening layer is volatilized after completely, by toughness reinforcing aramid fabric and cyanate resin base prepreg glued membrane compound, and make resin sized reinforcing fibres fabric through heat pressing process, after the processing release paper of prepreg upper surface is peeled off and is covered with polyethylene film, rolling obtains high tenacity aramid fabric/cyanate ester resin prepreg product。
Embodiment 6
Selecting polyether-ether-ketone PEEK as toughener, by PEEK resin slicer or pulverizing, be subsequently placed in drying baker, at 100 DEG C, dry 2h, after removing moisture therein, utilizes oxolane to dissolve the pellet of PEEK。Resin solution after dissolving is joined in electrospinning device, utilizes electrospinning process by PES sprays resin on T800 carbon fiber one-way fabric surface, form random, the uniform thermoplastic resin fibre's toughening layer of surface density；Area load have the carbon fibre fabric of the fiber reinforced layer of ultra-fine PEEK make PEEK superfine fibre toughening layer form an entirety with enhanced fabrics through the hot roll hot pressing of 150 DEG C, and by toughening carbon fiber reinforced one-way fabric through drying oven, solvent in toughening layer is volatilized after completely, by carbon fiber-reinforced for T800 fabric and epoxy resin-matrix prepreg glued membrane compound, and make resin sized reinforcing fibres fabric through heat pressing process, after being peeled off and be covered with polyethylene film by the processing release paper of prepreg upper surface, rolling obtains high tenacity T800/ epoxy prepreg product。
Claims (5)
1. the preparation method of the toughness reinforcing prepreg of thermoplastic resin superfine fibre film, it is characterised in that
(1) selecting thermoplastic resin as toughener, by thermoplastic resin section or pulverizing, be subsequently placed in drying baker, dry 1～2h at 80～100 DEG C, to remove moisture therein；
(2) dried thermoplastic resin is added good solvent, prepare into thermoplastic resin solution；
(3) thermoplastic resin solution utilizing electrospinning process be sprayed at enhanced fabrics surface, forms random, the uniform thermoplastic resin fibre's toughening layer of surface density, toughening layer surface density controls between 5～30g/；
(4) area load have the enhanced fabrics of toughening layer, hot rolled roller hot pressing make toughening layer constitute entirety, i.e. an elasticized fabric with fabric；
(5) by elasticized fabric through drying oven, the solvent in toughening layer is volatilized completely；
(6) by hot rolling, dried elasticized fabric and prepreg glued membrane resin compounded, and make prepreg glued membrane resin infiltration elasticized fabric through heat pressing process, prepare prepreg；
Described thermoplastic resin superfine fibre diameter control is between 100～5000nm；
Described prepreg glued membrane matrix is one of following resins: epoxy resin-base and with the blend of thermoplastic resin, bimaleimide resin base body and with the blend of thermoplastic resin, polyimide resin based body and with the blend of thermoplastic resin, phenolic resin as matrix resin and with the blend of thermoplastic resin, benzoxazine resins matrix and with the blend of thermoplastic resin, cyanate ester resin matrix and the blend with thermoplastic resin thereof。
2. the preparation method of a kind of toughness reinforcing prepreg of thermoplastic resin superfine fibre film according to claim 1, it is characterized in that, described toughener is one of following thermoplastic resin: polyether-ether-ketone, polyether-ketone, polysulfones, TPI, Polyetherimide, polyphenylene oxide, polyamide, polyolefin。
3. the preparation method of a kind of toughness reinforcing prepreg of thermoplastic resin superfine fibre film according to claim 1, it is characterized in that, described fabric is the one in glass fibre or carbon fiber or aramid fiber, and its weaving form is one-way fabric or plain cloth or satin fabric or twills or laminated cloth or non-flexing fabric。
4. the preparation method of a kind of toughness reinforcing prepreg of thermoplastic resin superfine fibre film according to claim 1, it is characterised in that described preparation completes the upper and lower surface of prepreg has processing release paper, polyethylene film as protective layer。
5. the preparation method of a kind of toughness reinforcing prepreg of thermoplastic resin superfine fibre film according to claim 1, it is characterised in that described toughener is thermoplastic resin polyether sulfone。
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| CN104401070B (en) * | 2014-10-15 | 2016-09-14 | 中国航空工业集团公司基础技术研究院 | One has composite sizing-toughness reinforcing bifunctional non-weaving cloth concurrently |
| CN104774431B (en) * | 2015-03-26 | 2017-09-12 | 奇瑞汽车股份有限公司 | Epoxy resin/carbon fibre composite and preparation method thereof |
| CN106926525B (en) * | 2015-12-31 | 2020-01-03 | 中国科学院宁波材料技术与工程研究所 | Fiber reinforced thermoplastic composite material, preparation method thereof and system for implementing method |
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| CN109263167B (en) * | 2018-08-10 | 2021-04-30 | 朱波 | Method for preparing carbon fiber prepreg fabric from toughened resin film |
| CN111087756A (en) * | 2018-10-23 | 2020-05-01 | 中国石油化工股份有限公司 | High-temperature-resistant high-toughness prepreg and preparation method thereof |
| CN112677602B (en) * | 2019-10-17 | 2023-11-24 | 中国石油化工股份有限公司 | Toughening material for prepreg, high-toughness composite material and preparation method thereof |
| CN110818306B (en) * | 2019-11-21 | 2020-08-18 | 四川大学 | Reinforcing and toughening agent for concrete and preparation method and application thereof |
| CN111674114A (en) * | 2020-06-03 | 2020-09-18 | 江苏恒神股份有限公司 | High-toughness OOA prepreg and preparation method thereof |
| CN113002024A (en) * | 2021-02-09 | 2021-06-22 | 中复神鹰(上海)科技有限公司 | Method for toughening carbon fiber prepreg between nano-particle polymer composite nano-fiber film layers |
| CN113580696B (en) * | 2021-07-07 | 2023-08-29 | 上海化工研究院有限公司 | Multipurpose composite cloth with protective performance and preparation method and application thereof |
| CN113386354B (en) * | 2021-07-19 | 2022-08-05 | 西安交通大学 | 3D printing device of continuous fibers and short fibers common reinforced resin |
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| CN101608050A (en) * | 2008-06-20 | 2009-12-23 | 中国科学院化学研究所 | Has epoxy resin modified material of three-decker and preparation method thereof |
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| JP2012107160A (en) * | 2010-11-19 | 2012-06-07 | Toyota Industries Corp | Fiber-reinforced composite material, process for producing fiber-reinforced composite material and reinforced fiber matrix |
| CN102922855B (en) * | 2012-10-24 | 2014-10-22 | 中国航空工业集团公司北京航空材料研究院 | Method for preparing high-tenacity hot-melt prepreg by hot-melt resin matrix |
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| CN101608050A (en) * | 2008-06-20 | 2009-12-23 | 中国科学院化学研究所 | Has epoxy resin modified material of three-decker and preparation method thereof |
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