CN103552170B - The preparation method of the toughness reinforcing unidirectional pre-immersion material of a kind of thermoplastic resin fibre's one-way tape - Google Patents
The preparation method of the toughness reinforcing unidirectional pre-immersion material of a kind of thermoplastic resin fibre's one-way tape Download PDFInfo
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- CN103552170B CN103552170B CN201310511233.3A CN201310511233A CN103552170B CN 103552170 B CN103552170 B CN 103552170B CN 201310511233 A CN201310511233 A CN 201310511233A CN 103552170 B CN103552170 B CN 103552170B
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Abstract
The invention belongs to material prepreg preparation field, relate to the preparation method of the toughness reinforcing unidirectional pre-immersion material of a kind of thermoplastic resin fibre's one-way tape.In prepreg fortifying fibre arrangement process, thermoplastic fibre is introduced fortifying fibre surface, again by hot-pressing roller by prepreg resin glued membrane and thermoplastic fibre one-way tape and fortifying fibre one-way tape compound, be finally prepared into the high tenacity prepreg product that thermoplastic resin fibre's one-way tape is toughness reinforcing.Present invention process process is simple and easy to implement, and can realize the continuous prodution of high tenacity prepreg, can significantly enhance productivity.
Description
Technical field
The invention belongs to material prepreg preparation field, relate to the preparation method of the toughness reinforcing unidirectional pre-immersion material of a kind of thermoplastic resin fibre's one-way tape.
Background technology
Fiber-reinforced resin matrix compound material due to the feature such as its specific strength, specific stiffness are 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 a large amount of for secondary bearing member already, also occupies increasing proportion at present in the main load-bearing part such as wing, fuselage of aircraft.This just proposes requirement to the damage tolerance of composite, particularly not enough for composite interlayer toughness, and shock resistance lesion capability this problem limited is the focus of research for a long time always.
For head it off, propose multiple corrective measure, it is toughness reinforcing that traditional composite material toughening method extensively adopts thermoplastic component to carry out, modifier thermoplastic resin is directly joined in resin matrix and reaches toughness reinforcing object, but this method significantly may increase the viscosity of resin matrix, and then reduce the processing performance of composite intermediate products prepreg, as thermoplastic component adds the tolerance etc. of the feel stickiness of rear prepreg, the Ke Pu property covered, curing process.
For obtaining more efficient, rational method for toughening, home and abroad scholar has carried out large quantifier elimination, 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 expansion 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 enhancing fabric to reach toughness reinforcing object by Chinese patent ZL2006100993819, and the CAI of its toughening composition is significantly improved.Interlayer toughened technology can increase substantially the crucial selection being interlayer toughened material of toughness of composite, along with the progress of 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 still also exists great number of issues, the reallocation etc. of eliminating, the between layers resin of bubble in composite material shaping process can be limited in as thermoplastic film.And traditional interlayer toughened method is all that toughening material is independently individual as one, manually the method such as lay is inserted into reinforcing material interlayer, technical process is comparatively loaded down with trivial details, efficiency is lower, 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
The object of the invention is: propose a kind ofly to spread the preparation method covering the toughness reinforcing unidirectional pre-immersion material of thermoplastic resin fibre's one-way tape that performance is good, technical process is simple, operating efficiency is high.
Technical scheme of the present invention is:
According to the requirement of prepreg surface density, the often bundle fortifying fibre that fortifying fibre tow creel is drawn is carried out arranging and launching on pre-dipping machine, form fortifying fibre one-way tape;
Thermoplastic fibre tow is introduced above pre-dipping machine fortifying fibre, and evenly launch, form thermoplastic resin fibre's one-way tape, thermoplastic fibre one-way tape surface density controls at 10g/m2 ~ 40g/m2, thermoplastic fibre one-way tape is equal with fortifying fibre one-way tape fabric width, and left and right alignment, thermoplastic fibre is positioned at directly over fortifying fibre band, leaves spacing between the two;
(5) launch to arrange entry device between district and resin compounded district at preimpregnation organic fiber, a branch of thermoplastic fibre tow passes across in the middle of fortifying fibre one-way tape and thermoplastic fibre one-way tape every 10 ~ 200mm by entry device between thermoplastic fibre one-way tape and enhancing fabric one-way tape;
(6) by thermoplasticity one-way tape elasticized fabric and prepreg glued membrane compound, and make prepreg glued membrane resin sized reinforcing fibres through heat pressing process, obtain the toughness reinforcing prepreg of thermoplastic resin fibre's one-way tape.
Described thermoplastic resin fibre is one of following thermoplastic resin: polyether-ether-ketone, polyether-ketone, polysulfones, polyether sulfone, thermoplastic resin polyimides, PEI, polyphenylene oxide, polyamide, polyolefin.
Described thermoplastic resin fibre's diameter control is between 1 μm ~ 20 μm.
Described fortifying fibre is the one in glass fibre or carbon fiber or aramid fiber.
Described fortifying fibre be unidirectional fibre without latitude cloth or fortifying fibre woven cloths, its weaving form is one-way fabric or plain cloth or satin fabric or twills 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 colophony matrix and with the blend of thermoplastic resin, cyanate ester resin matrix and the blend with thermoplastic resin thereof.
The upper and lower surface of the described toughness reinforcing unidirectional pre-immersion material of thermoplastic resin fibre's one-way tape has processing release paper, polyethylene film as protective layer.
Advantage of the present invention is: first, this process adopt toughening material to be the woven fabric of thermoplastic fibre prepared by wet method or melt spinning, low relative to electrostatic spinning process energy consumption, output large, be convenient to realize large-scale production; Secondly, thermoplastic fibre one-way tape has good ventilative, seep through performance, the internal soundness effectively can ensure composite material forming while ensureing excellent toughness reinforcing effect after; 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 toughening material preparation process combines together, improves the production efficiency of interlayer toughened composite, greatly reduces the cost of labor in interlayer toughened composite material.
This patent proposes a kind of process that can be continuously produced high tenacity prepreg product, in prepreg fortifying fibre arrangement process, thermoplastic fibre one-way tape is introduced fortifying fibre surface, again by hot-pressing roller by prepreg resin glued membrane and thermoplastic resin fibre's one-way tape and fortifying fibre compound, be finally prepared into the toughness reinforcing prepreg product of thermoplastic resin fibre's one-way tape.This patent significantly can improve the preparation efficiency of toughness reinforcing prepreg, and can realize serialization industrial production.The Reinforced structure of the high tenacity prepreg of preparation is thermoplastic fibre one-way tape, ventilative, seep through is functional, do not affect the exhaust process in prepreg plywood curing molding, less on the reallocation impact of resin between layers, and toughening material skin 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.
Accompanying drawing explanation
Fig. 1 is the toughness reinforcing unidirectional pre-immersion material flow sheet of thermoplastic resin fibre's one-way tape of the present invention;
Fig. 2 is thermoplastic resin fibre's one-way tape of the present invention toughness reinforcing unidirectional pre-immersion material product schematic diagram.
Detailed description of the invention
Below the present invention is described in further details.The present invention is in prepreg fortifying fibre arrangement process, thermoplastic fibre one-way tape 2 is introduced fortifying fibre one-way tape 1 surface, again by hot-pressing roller by prepreg glued membrane resin matrix 3 and thermoplastic resin fibre's one-way tape 2 and fortifying fibre one-way tape 1 compound, be finally prepared into the toughness reinforcing prepreg product of thermoplastic resin fibre's one-way tape.
A preparation method for the toughness reinforcing prepreg of thermoplastic resin fibre's one-way tape, concrete steps are as follows:
(1) according to the requirement of prepreg surface density, the often bundle fortifying fibre that fortifying fibre tow creel is drawn is carried out arranging and launching on pre-dipping machine, form fortifying fibre one-way tape 1;
(2) introduced above pre-dipping machine fortifying fibre by thermoplastic fibre tow, and evenly launch, form thermoplastic resin fibre's one-way tape 2, thermoplastic fibre one-way tape 2 surface density controls at 10g/m
2~ 40g/m
2, thermoplastic fibre one-way tape 2 is equal with fortifying fibre one-way tape 1 fabric width, and left and right alignment, thermoplastic fibre one-way tape 2 is positioned at directly over fortifying fibre one-way tape 1, leaves spacing between the two;
(3) launch to arrange entry device between district and resin compounded district at preimpregnation organic fiber, every 10 ~ 200mm, it is middle with thermoplastic fibre one-way tape 2 that a branch of thermoplastic fibre tow 3 is passed across fortifying fibre one-way tape 1 by entry device, affects toughening effect to prevent thermoplastic fibre 2 from embedding fortifying fibre 1 inside;
(4) by fortifying fibre one-way tape 1, thermoplastic resin fibre's one-way tape 2 and prepreg glued membrane resin matrix 3 compound, and make prepreg glued membrane resin matrix 3 sized reinforcing fibres 1 and thermoplastic fibre 2 through heat pressing process, obtain the toughness reinforcing prepreg of thermoplastic resin fibre's one-way tape.
(5) processing release paper of prepreg upper surface to be peeled off and after being covered with polyethylene film 5, rolling obtains upper and lower surface has polyethylene film 5, processing release paper 6 as the high tenacity prepreg product of protective layer.
Specific embodiment
Embodiment 1
Select polyamide PA6 unidirectional fibre as toughening material, average fibre diameter about 5 μm, CCF300 carbon fiber is as reinforcing material.After CCF300 carbon fibers extend completes, PA6 one-way fiber band is introduced CCF300 carbon fiber surface, and PA6 one-way fiber zone face density domination is at 10g/m
2.Every 25mm, a branch of PA6 fibre bundle passes across in the middle of CCF300 carbon fiber one-way band and PA6 one-way fiber band by entry device, affects toughening effect to prevent PA6 fiber from embedding carbon fiber inside.Again by hot-pressing roller by epoxy resin-matrix prepreg glued membrane and PA6 fiber and CCF300 carbon fiber compound, be prepared into the high tenacity prepreg product that PA6 one-way fiber band is toughness reinforcing.Peeled off by the processing release paper of prepreg upper surface and after being covered with polyethylene film, rolling obtains upper and lower surface has polyethylene film, processing release paper as the toughness reinforcing high tenacity CCF300/ epoxy prepreg product of the PA6 unidirectional fibre of protective layer.
Embodiment 2
Select polyether sulfone PES unidirectional fibre as toughening material, average fibre diameter about 15 μm, T700 carbon fiber is as reinforcing material.After T700 carbon fibers extend completes, PES one-way fiber band is introduced T700 carbon fiber surface, and PES one-way fiber zone face density domination is at 10g/m
2.Every 100mm, a branch of PES fibre bundle passes across in the middle of T700 carbon fiber one-way band and PES one-way fiber band by entry device, affects toughening effect to prevent PES fiber from embedding carbon fiber inside.Again by hot-pressing roller by epoxy resin-matrix prepreg glued membrane and PES fiber and T700 carbon fiber compound, be prepared into the high tenacity prepreg product that PES one-way fiber band is toughness reinforcing.Peeled off by the processing release paper of prepreg upper surface and after being covered with polyethylene film, rolling obtains upper and lower surface has polyethylene film, processing release paper as the toughness reinforcing high tenacity T700/ epoxy prepreg product of the PES unidirectional fibre of protective layer.
Embodiment 3
Select polyether-ketone PEK unidirectional fibre as toughening material, average fibre diameter about 15 μm, HKT800 carbon fiber is as reinforcing material.After HKT800 carbon fibers extend completes, PEK one-way fiber band is introduced HKT800 carbon fiber surface, and PEK one-way fiber zone face density domination is at 15g/m
2.Every 80mm, a branch of PEK fibre bundle passes across in the middle of HKT800 carbon fiber one-way band and PEK one-way fiber band by entry device, affects toughening effect to prevent PEK fiber from embedding carbon fiber inside.Again by hot-pressing roller by bismaleimide resin base prepreg glued membrane and PEK fiber and HKT800 carbon fiber compound, be prepared into the high tenacity prepreg product that PEK one-way fiber band is toughness reinforcing.Peeled off by the processing release paper of prepreg upper surface and after being covered with polyethylene film, rolling obtains upper and lower surface has polyethylene film, processing release paper as the toughness reinforcing high tenacity HKT800/ bismaleimide resin prepreg product of the PEK unidirectional fibre of protective layer.
Embodiment 4
Select polyether-ether-ketone PEEK unidirectional fibre as toughening material, average fibre diameter about 15 μm, glass fibre is as reinforcing material.After glass fibre has been arranged, PEEK one-way fiber band is introduced fiberglass surfacing, and PEEK one-way fiber zone face density domination is at 15g/m
2.Every 120mm, a branch of PEEK fibre bundle passes across in the middle of glass fibre one-way tape and PEEK one-way fiber band by entry device, affects toughening effect to prevent PEEK fiber from embedding glass fibre inside.Again by hot-pressing roller by cyanate resin base prepreg glued membrane and PEEK fiber and glass fibre compound, be prepared into the high tenacity prepreg product that PEEK one-way fiber band is toughness reinforcing.Peeled off by the processing release paper of prepreg upper surface and after being covered with polyethylene film, rolling obtains upper and lower surface has polyethylene film, processing release paper as the toughness reinforcing high-toughness glass fibre/cyanate ester resin prepreg product of the PEEK unidirectional fibre of protective layer.
Embodiment 5
Select polysulfones PSF unidirectional fibre as toughening material, average fibre diameter about 12 μm, aramid fiber is as reinforcing material.After aramid fiber has been arranged, PSF one-way fiber band is introduced aramid fiber surface, and PSF one-way fiber zone face density domination is at 12g/m
2.Every 120mm, a branch of PSF fibre bundle passes across in the middle of glass fibre one-way tape and PSF one-way fiber band by entry device, affects toughening effect to prevent PSF fiber from embedding glass fibre inside.Again by hot-pressing roller by cyanate resin base prepreg glued membrane and PSF fiber and aramid fiber compound, be prepared into the high tenacity prepreg product that PSF one-way fiber band is toughness reinforcing.Peeled off by the processing release paper of prepreg upper surface and after being covered with polyethylene film, rolling obtains upper and lower surface has polyethylene film, processing release paper as the toughness reinforcing high tenacity aramid fiber/cyanate ester resin prepreg product of the PSF unidirectional fibre of protective layer.
Claims (7)
1. a preparation method for the toughness reinforcing unidirectional pre-immersion material of thermoplastic resin fibre's one-way tape, is characterized in that,
(1) according to the requirement of prepreg surface density, the often bundle fortifying fibre that fortifying fibre tow creel is drawn is carried out arranging and launching on pre-dipping machine, form fortifying fibre one-way tape;
(2) introduced above pre-dipping machine fortifying fibre by thermoplastic fibre tow, and evenly launch, form thermoplastic resin fibre's one-way tape, thermoplastic resin fibre's one-way tape surface density controls at 10g/m
2~ 40g/m
2, thermoplastic resin fibre's one-way tape is equal with fortifying fibre one-way tape fabric width, and left and right alignment, thermoplastic resin fibre is positioned at directly over fortifying fibre one-way tape, leaves spacing between the two;
(3) launch to arrange entry device between district and resin compounded district at preimpregnation organic fiber, a branch of thermoplastic fibre tow passes across in the middle of fortifying fibre one-way tape and thermoplastic resin fibre's one-way tape every 10 ~ 200mm by entry device between thermoplastic resin fibre's one-way tape and fortifying fibre one-way tape, forms thermoplastic resin one-way tape elasticized fabric;
(4) by thermoplastic resin one-way tape elasticized fabric and prepreg glued membrane compound, and make prepreg glued membrane resin sized reinforcing fibres through heat pressing process, obtain the toughness reinforcing prepreg of thermoplastic resin fibre's one-way tape.
2. according to the preparation method of the toughness reinforcing unidirectional pre-immersion material of a kind of thermoplastic resin fibre's one-way tape described in claim 1, it is characterized in that, described thermoplastic resin fibre is one of following thermoplastic resin: polyether-ether-ketone, polyether-ketone, polysulfones, polyether sulfone, thermoplastic resin polyimides, PEI, polyphenylene oxide, polyamide, polyolefin.
3. the preparation method of the toughness reinforcing unidirectional pre-immersion material of a kind of thermoplastic resin fibre's one-way tape according to claim 1, is characterized in that, described thermoplastic resin fibre's diameter control is between 1 μm ~ 20 μm.
4. the preparation method of the toughness reinforcing unidirectional pre-immersion material of a kind of thermoplastic resin fibre's one-way tape according to claim 1, is characterized in that, described fortifying fibre is the one in glass fibre or carbon fiber or aramid fiber.
5. the preparation method of the toughness reinforcing unidirectional pre-immersion material of a kind of thermoplastic resin fibre's one-way tape according to claim 1, is characterized in that, described fortifying fibre is that unidirectional fibre is without latitude cloth.
6. the preparation method of the toughness reinforcing unidirectional pre-immersion material of a kind of thermoplastic resin fibre's one-way tape according to claim 1, it is characterized in that, described prepreg glued membrane matrix is one of following resins: epoxy resin-base and the blend with thermoplastic resin thereof, bimaleimide resin base body and the blend with thermoplastic resin thereof, polyimide resin based body and the blend with thermoplastic resin thereof, phenolic resin as matrix resin and the blend with thermoplastic resin thereof, benzoxazine colophony matrix and the blend with thermoplastic resin thereof, cyanate ester resin matrix and the blend with thermoplastic resin thereof.
7. the preparation method of the toughness reinforcing unidirectional pre-immersion material of a kind of thermoplastic resin fibre's one-way tape according to claim 1; it is characterized in that, the upper and lower surface of the described toughness reinforcing unidirectional pre-immersion material of thermoplastic resin fibre's one-way tape has processing release paper, polyethylene film as protective layer.
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