CN104842619B - High tenacity sandwich construction prepreg manufacturing process - Google Patents
High tenacity sandwich construction prepreg manufacturing process Download PDFInfo
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- CN104842619B CN104842619B CN201510225863.3A CN201510225863A CN104842619B CN 104842619 B CN104842619 B CN 104842619B CN 201510225863 A CN201510225863 A CN 201510225863A CN 104842619 B CN104842619 B CN 104842619B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
- B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/02—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by a sequence of laminating steps, e.g. by adding new layers at consecutive laminating stations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/08—Impregnating
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/24—Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/04—4 layers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/05—5 or more layers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
- B32B2260/02—Composition of the impregnated, bonded or embedded layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2605/00—Vehicles
- B32B2605/18—Aircraft
Abstract
The present invention provides a kind of high tenacity sandwich construction prepreg manufacturing process, the prepreg of production is more than four layers of sandwich construction, on the basis of resin bed fibrous layer resin bed three-decker, one or more layers toughening layer is set up, while setting up multi-layer resinous layer accordingly；This kind of high tenacity sandwich construction prepreg manufacturing process, appropriate toughener or no addition toughener is only added in the resin of mixing, and other toughener exist in the form of toughening layer, it ensure that in film resin viscosity is sufficiently low and can be suitably used for the production that common device for coating can be carried out, it will not cause because the situation that resin viscosity damages greatly very much equipment occurs, the impregnation degree of the method prepreg in impregnation is high, reduce the probability that space is produced in follow-up product solidification, drastically increase the post-impact compression of product, corresponding service life and the storage life for adding prepreg.
Description
Technical field
The present invention relates to a kind of high tenacity sandwich construction prepreg manufacturing process, toughened resin is directed to use with as matrix
Prepreg is manufactured.
Background technology
With the development and the progress of science in epoch, polymer matrix composites are increasingly wider to be applied to space flight and aviation, rail
The fields such as road traffic, marine settings and new energy.Particularly field of aerospace, it has also become polymer matrix composites development most by
The direction of concern.
In general, as the main force support structure part and time resin base composite wood used in load-carrying construction part of aircraft body
Material, one of indispensable condition of material is exactly that, with high tenacity, and the toughness of polymer matrix composites can be compressed after its impact
Intensity（CAI）To characterize, there is compressive strength after HI high impact with high tenacity.This conditional decision polymer matrix composites
Matrix resin be necessary for high tenacity resin.Therefore it is current resin research and development that how toughened resin, which makes it have higher toughness,
One of main flow direction.For general resin matrix, the traditional method of toughness reinforcing is exactly to add toughener in formula to improve
Resin toughness, if it is following the problem of be exactly that toughness reinforcing dosage is too big, after toughness reinforcing resin will have compared to ordinary resin more
High viscosity or lower viscosity.
Hot melt two-step method is generally using the method for high tenacity production of resins prepreg now, technique is divided into film and impregnation
Two procedures.When producing prepreg, operating personnel extrude the pole to be formed in film and impregnation process by high-precision roller set
Small―gap suture controls resin content and prepreg to be impregnated with degree respectively.The actual temperature upper limit of usual prepreg production equipment does not surpass
120 DEG C are crossed, and viscosity of most of high tenacity resin under the temperature extremes is also higher.Therefore straight using high tenacity resin
Deliver a child production prepreg when, often because toughened resin viscosity is too high, cause that prepreg production equipment is damaged or resin is difficult
To be impregnated with fiber, meanwhile, there is also excessively, cause resin viscosity too low because of high tenacity resin addition toughener, cause to produce
Prepreg can not paving the problem of use.Therefore product design performance requirement is met in order to be provided to field of aerospace
CAI values and the high tenacity prepreg for having excellent processing performance concurrently, a kind of necessary system of new high tenacity prepreg of research
Technique is made to solve problem above.
The content of the invention
It is an object of the invention to provide a kind of new technology, solve to meet the high-ductility of aerospace structural design requirement in production
Property prepreg during, a series of problems present in existing high tenacity prepreg production technology, such as high tenacity resin glue
Degree is big, causes that production prepreg equipment is easily damaged or prepreg impregnation degree is low, and resin viscosity is too low caused pre-
Soaking material can not be situations such as normally paving be used.Simultaneously on the premise of raw material reach requirement, it is ensured that the preimpregnation of this method production
The CAI performances of material respective plates can be greatly improved, the production engineering specifications to meet space flight and aviation.
In order to reach object above, technical solution of the invention is：
A kind of high tenacity sandwich construction prepreg manufacturing process, the prepreg of production is more than four layers of sandwich construction,
On the basis of resin bed-fibrous layer-resin bed three-decker, one or more layers toughening layer is set up, while setting up many accordingly
Layer resin bed, specific production craft step is：
A. the sandwich construction of prepreg is designed, the basic model of sandwich construction is two layers or more than two layers of resin bed+one
The construction of layer or more than one layer of fibrous layer+one or more layers of toughening layer, the upper and lower surface of fibrous layer directly with two layers
Resin bed is contacted；For example, can be two layers of resin layer+one layer of fibrous layer of+two layers toughening layer or three-layer resin+one layer of toughness reinforcing of layer
+ one layer of fibrous layer of layer or two layers of resin layer+one layer of fibrous layer of+one layer of toughening layer etc..
B. according to design prepreg sandwich construction, selection film or impregnation process in add toughening layer, then
Corresponding prepreg is produced using hot melt preimpregnation equipment.
Further, fibrous layer is one in the high performance fibers such as carbon fiber, glass fibre, aramid fiber, quartz fibre
Plant or numerous compositions, fibers form is fibre bundle, one-way fabric, multi-axial fabric or blended fabric, fiber areal densities
30gsm-800 gsm。
Further, resin bed is prepreg toughened resin, and prepreg is kept with resin viscosity during 90 DEG C of toughened resin
For 500-200000cPs, while mass content of the All Trees lipid layer comprising toughening layer is 25%-50% in prepreg.
Further, prepreg is epoxy resin, phenolic resin, BMI with the resin Composition in toughened resin
The composition that one or more in resin and cyanate ester resin are mixed to get by a certain percentage, and the tree that every layer of resin bed is used
Fat is same identical resin or a variety of resins differed.Resin portion is in order to improve its fire-retardant, corrosion resistance, toughness
Etc. function, can also add various inorganic particulates for example aluminium hydroxide, halogen or phosphorous etc. fire retardant, polyurethane toughened dose, and
Improve the reagents such as levelling agent, the defoamer of its manufacturability.
Curing agent component in the resin system of prepreg can be amine, anhydrides, metallic salt, imidazoles, linear
One or more mixtures in resin oligomers class and their derivative, its specific composition and ratio and resin Composition have
Close.
Further, the toughener added in toughening layer and resin bed is thermoplastic toughening agent, toughener using polysulfones,
Polyether sulfone, polyether-ketone, polyether-ether-ketone, PEI, polyphenylene oxide, polymethyl methacrylate, modified polyarylether sulfone and poly- carbon
The mixture that one or more in acid esters etc. are combined by a certain percentage.
Further, the mass percent of the toughener in resin bed accounts for the 5%- of whole resin Composition mass percent
20%, preferably 10%-15%；
Further, the mass percent that the quality of toughening layer accounts for the resin system that whole prepreg is used in prepreg is
1%-40%, preferably 5%-20%, more preferably 10%-15%；Toughening layer exists with felt, film, powder or form of fabric.
Further, method of the addition toughening layer on resin glued membrane or prepreg surface is adopted as spraying, coated or directly
Coverage mode is connect, adding method is by toughening layer toughening agent composition and Determines.
Further, specifically produced using following hot melt preimpregnation equipment：Hot melt preimpregnation equipment includes what is set gradually
Press roller group, the first release liners winding roller group, can heated type roller set, the second release liners winding roller group, pressing roller group include it is upper
Under symmetrically arranged press bonding roller, can heated type roller set a diameter of 6cm-20cm for including more than two couples surface smooth add
Hot type disk roller, at least one unreeling shaft and at least one Scroll, the first release liners winding roller group, the second release liners wind-up roll
Group includes the release liners wind-up roll of setting symmetrical above and below respectively.
Further, addition toughening layer concrete mode is in membrane process is applied：
B1, first by resin coating film, rolled up according to the pure resin glued membrane that the design of overall prepreg decides not to add toughening layer
Quantity and the glued membrane volume quantity for needing addition toughening layer, and according to the method that the formal character of toughening material is different on film applicator
Toughening layer is added on corresponding glued membrane；
B2, at least two layers pure resin glued membrane and fiber obtained preliminary pre- in hot melt preimpregnation equipment by hot pressing is compound
Leaching material, then adds at least one layer of glued membrane with toughening layer on preliminary prepreg, further by one group of hot pressing roller group
Wound after ground pressing；
Further, addition toughening layer concrete mode is in impregnation process：
B1, first by resin coating film, the quantity that pure resin glued membrane is rolled up, whole glued membranes are determined according to the design of overall prepreg
Roll up and rolled up for pure resin glued membrane.
B2, at least two layers pure resin glued membrane and fiber obtained preliminary pre- in hot melt preimpregnation equipment by hot pressing is compound
Leaching material, then adds at least one toughening layer, according to design it needs to be determined that again according to the different method of the formal character of toughening material
Extra addition multilayer pure resin glued membrane, then winds after one group of hot pressing roller group further hot pressing.
The beneficial effects of the invention are as follows this kind of high tenacity sandwich construction prepreg manufacturing process has the following advantages that：
First, appropriate toughener is only added in the resin of mixing or without addition toughener, and other toughener
Exist in the form of toughening layer, it is ensured that in film, resin viscosity is sufficiently low can be suitably used for what common device for coating can be carried out
Production, will not cause because resin viscosity damages greatly very much the situation generation of equipment, the impregnation journey of the method prepreg in impregnation
Degree is high, reduces the probability that space is produced in follow-up product solidification；
2nd, the reduction of resin viscosity accordingly adds resin viscosity, and higher tack ensure that prepreg will not be because of viscosity
Laying is too low to use；
3rd, because introducing toughening layer in prepreg in production process, toughness reinforcing of offing normal is formd with resin, is greatly carried
The high CAI values of product, so as to meet space flight and aviation design requirement；
4th, this technique largely reduces the production temperature of prepreg, shortens the thermal histories of resin, corresponding to increase
Add service life and the storage life of prepreg, and reduce production cost.
Brief description of the drawings
Fig. 1 is the prepreg structure chart of seven-layer structure.
In Fig. 1,1-1 is resin bed；1-2 is toughening layer；1-3 is resin bed；1-4 is fibrous layer；1-5 is resin bed；1-6
For toughening layer；1-7 is resin bed.
Fig. 2 is the preimpregnation equipment and process schematic of seven-layer structure prepreg production.
In Fig. 2,2-1 is glued membrane one；2-2 is glued membrane two；2-3 is twill carbon fibre fabric；2-4 is pressing roller group；2-5 is
Release liners are wound；2-6 glued membranes three；2-7 is glued membrane four；2-8 is can heated type roller set；2-9 is PE films.
Fig. 3 is the prepreg structure chart of four-layer structure.
In Fig. 3,3-1 is toughening layer；3-2 is resin bed；3-3 is fibrous layer；3-4 is resin bed.
Fig. 4 is the preimpregnation equipment and process schematic of four-layer structure prepreg production.
In Fig. 4,4-1 is glued membrane one；4-2 is glued membrane two；4-3 is 12K carbon fibers；4-4 is pressing roller group；4-5 is release
Paper is wound；4-6 is Polyethersulfone membranes；4-7 is can heated type roller set；4-8 is PE films.
Embodiment
The preferred embodiment that the invention will now be described in detail with reference to the accompanying drawings.
The new process for manufacturing prepregs of embodiment, key point is two layers or three-layered node for having abandoned traditional prepeg
Structure, it is innovative that prepreg is produced by design object of sandwich construction.Prepreg is ensured with increased toughening layer in prepreg
Manufacturability and corresponding product mechanical property.During production, first selected to add toughening layer according to the prepreg structure of design
The common toughened resin of good manufacturability and fibre reinforcement hot pressing, are then combined, then add by prepreg production process and method
Plus toughening layer, finally obtain the prepreg of needs.While in order to ensure prepreg between its sandwich construction after the completion of production
Stability, devises a set of new hot pressing roller group so that prepreg can enter one before winding in the equipment at impregnation process position
Step is fully by hot pressing.
Embodiment technique is applied to the production of most of high tenacity resin prepreg materials, solves existing production high tenacity preimpregnation
A series of problems present in material technology, such as high tenacity resin viscosity are big, cause production prepreg equipment to be easily damaged or in advance
Leaching material impregnation degree is low, also or because addition toughener is excessive, causes the too low caused prepreg of resin viscosity not use.Together
When on the premise of raw material reach requirement, it is ensured that the CAI performances of prepreg respective plates of this method production can obtain pole
Big raising, the production engineering specifications to meet space flight and aviation.
Embodiment 1
According to prepreg structural representation, such as Fig. 1, instantiation 1 is described in detail.
According to design, the resin content of prepreg requirement is 40%, and fiber areal densities are 220g/m2, in order to ensure CAI values,
The epoxy prepreg of production seven-layer structure as shown in Figure 1 is needed, resin bed 1-1, toughening layer 1-2, resin bed is followed successively by
1-3, fibrous layer 1-4, resin bed 1-5, toughening layer 1-6, resin bed 1-7.
Wherein, fibrous layer 1-4 is the gsm of fiber areal densities 220 twill carbon fibre fabric.
Wherein, four layers of resin bed 1-1,1-3,1-5,1-7 are used with a tough epoxy resin.Resin Composition selects bis-phenol
A type resin systems, toughener selects polyether-ether-ketone, and curing agent selects amine curing agent.Toughener part wherein in resin system
Account for 15%.The viscosity of resin is 10000cPs at 90 DEG C.
Wherein, two layers toughening layer 1-2,1-6 are polyether-ether-ketone powder beds.
Implement process as follows：
Film first.The film at 75 DEG C, determines to produce the glued membranes of volume four altogether, wherein volume two are pure trees according to design requirement
The 2-1 of the fat glued membrane one and 2-2 of pure resin glued membrane two.Then by film applicator in release liners after film, then by way of dusting
10 gsm polyether-ether-ketone powder is equably added in film surface as toughening layer 1-2,1-6, the glue of volume two are produced in this approach
The 2-6 of the film three and 2-7 of glued membrane four.
According to equipment and procedure chart 2, in order to which prepreg structure is not in after release liners are peeled off when ensureing to produce
It is at random, be mounted with the pressing roller group 2-4 rears of impregnation equipment four groups of a diameter of 150mm can heated type roller set 2-8, can add
Hot type roller set 2-8 uses the form of upper steel rider lower rubber roller.
During production, by the 2-1 of the pure resin glued membrane one and 2-2 of pure resin glued membrane two and the middle twill carbon fibre fabric 2- unreeled
3 are combined by pressing roller group 2-4 in Fig. 2, obtain preliminary prepreg.Control presses roller group 2-4 temperature and pressures by resin impregnated
Fiber, the three-decker of basis of formation.Then after release liners winding 2-5 is carried out by wind-up roll, successively by the 2-6 of glued membrane three and glue
The 2-7 of film four is covered on preliminary prepreg, will by hot pressing roller group 2-8 such as 80 DEG C of the temperature provided and pressure such as 200N or so
The 2-6 of the glued membrane three and 2-7 of glued membrane four combines closely with preliminary prepreg, it is ensured that prepreg structure will not go out after release liners in stripping
It is existing at random.It is finally peeled away release liners and is covered with PE film 2-9, obtains the high tenacity prepreg of designed seven-layer structure.
After testing, preferably, processing performance is good for prepreg surface viscosity.6mm plate is coated with using 45/0/-45/90 methods
Material, through examining imporosity, CAI values≤250MPa after solidification.
Embodiment 2
According to prepreg structural representation, such as Fig. 3, instantiation 2 is described in detail.
According to design, the resin content of prepreg requirement is 35%, and fiber areal densities are 145g/m2, in order to ensure CAI values,
The cyanate ester resin prepreg of production four-layer structure as shown in Figure 3 is needed, toughening layer 3-1, resin bed 3-2, fiber is followed successively by
Layer 3-3, resin bed 3-4.
Wherein, fibrous layer 3-3 is fiber areal densities 145g/m212K carbon fibers.
Wherein, two layers of resin layer 3-2,3-4 are used with a toughness cyanate ester resin.Resin Composition selects cyanate ester resin
System, toughener selects polyether sulfone, and curing agent selects acetyl acetone salt.Wherein toughener part accounts for 12% in resin system.
The viscosity of resin is 5000cPs at 90 DEG C.
Wherein, toughening layer 3-1 is that surface density is 8g/cm2Polyethersulfone membranes.
Implement process as follows：
Film, the film at 65 DEG C, determine to produce the 4-1 of pure resin glued membrane one of volume two altogether and pure according to design requirement first
The 4-2 of resin glued membrane two.
According to equipment and procedure chart 4, in order to which prepreg structure is not in after release liners are peeled off when ensureing to produce
It is at random, be mounted with the pressing roller group 4-4 rears of impregnation equipment three groups of a diameter of 150mm can heated type roller set 4-7, use
The form of steel rider up and down.
During production, by the 4-1 of the glued membrane one and 4-2 of glued membrane two and the middle carbon fibre fabric i.e. 12K carbon fibers 4-3 unreeled, warp
Cross pressing roller group 4-4 in Fig. 4 to be combined, obtain preliminary prepreg.Control pressing roller group 4-4 temperature and pressures are fine by resin impregnated
Dimension, the three-decker of basis of formation.Then after release liners winding 4-5 is carried out by wind-up roll, Polyethersulfone membranes 4-6 is unreeled and covered
Cover on preliminary prepreg, then enclose one layer of release liners protection Polyethersulfone membranes 4-6.By can heated type roller set 4-7 provide
Such as 75 DEG C of temperature and pressure such as 200N or so Polyethersulfone membranes 4-6 is combined closely with preliminary prepreg, it is ensured that in stripping
Prepreg structure is not at random after release liners.It is finally peeled away release liners and is covered with PE film 4-8, obtains designed four floor height
Toughness prepreg.
After testing, preferably, processing performance is good for prepreg surface viscosity.6mm plate is coated with using 45/0/-45/90 methods
Material, through examining imporosity, CAI values≤260MPa after solidification.
Principle explanation
Toughness reinforcing agent content in resin system is not necessarily enough to make the CAI performances of resin to reach design requirement, but tree
Viscosity that resin system toughness reinforcing agent content low phase is answered is sufficiently low to ensure that resin can be normally carried out follow-up prepreg production, to protect
The produced prepreg of card has higher toughness, it is therefore desirable to add toughening layer in prepreg to ensure final prepreg system
The high tenacity of product.Simultaneously as the low viscosity of resin, can substantially reduce the temperature of prepreg production, shorten thermal histories, increase
Its service life and storage life, and reduce production cost.
Hot melt process for manufacturing prepregs mainly includes applying membrane process and impregnation process, therefore according to the prepreg knot of design
Structure, which can be divided into film production process increasing in toughening layer or impregnation process, adds two methods of toughening layer.
Both approaches can be used in step hot melt prepreg production, can also be used in the preimpregnation of two step hot melts
In material production.
The method that toughening layer is added on resin glued membrane or prepreg surface can be spraying, directly coating, covering etc.
Mode, is that existence form is determined by toughening layer toughening agent composition and state.
In general, common pre- dipping machine peels off upper release liners with regard to directly progress, covers PE films after a hot pressing
With the process of winding.Above-mentioned both of which is to increase new glue on preliminary prepreg surface after first time hot pressing process
Film or toughening layer, it is seen that the prepreg that with the addition of toughening layer can not be further processed for common pre- dipping machine, hold very much
Be easily caused sandwich construction prepreg because adhesion between layers is low and occurring delamination can not use.If set simultaneously
Meter addition multilayer laminate, it is necessary to add multiple windings and unreel station.Therefore embodiment devise can heated type roller set with
Ensure the stability of the interlayer performance of sandwich construction and convenient addition adhesive film in prepreg.
It is above-mentioned can heated type roller set smooth added by two pairs or more a diameter of 6cm-20cm surface
Hot type disk roller and at least one unreeling shaft and at least one Scroll are constituted, positioned at common preimpregnation part hot-pressing roller rear.
Can the material that uses of heated type disk roller can be stainless steel, polyester, rubber etc.；Can heated type roller set for up and down two
Roll-type；Mode of heating can use the heat-conducting mediums such as electrical heating, heat radiation heating or medium heating, including conduction oil, water；It can add
Hot roller set can carry out regulating roller wheel pressure by air pressure or oil pressure.
At least one unreeling shaft is arranged on the arrival end of hot pressing roller group, and at least one Scroll hot pressing roller group is arranged on hot pressing
The outlet port of roller group.The multiple unreeling shafts of installation and receipts can be interted in the centre that can heat roller set according to design requirement simultaneously
Spool.
Claims (4)
1. a kind of high tenacity sandwich construction prepreg manufacturing process, it is characterised in that：The prepreg of production is more for more than four layers
Rotating fields, on the basis of resin bed-fibrous layer-resin bed three-decker, set up one or more layers toughening layer, while accordingly
Set up multi-layer resinous layer, resin bed is prepreg toughened resin, and prepreg is kept with resin viscosity during 90 DEG C of toughened resin
For 500-200000cPs, while the mass content of All Trees lipid layer is 25%-50% in prepreg；Toughening layer in prepreg
Quality account for the resin system that whole prepreg is used mass percent be 1%-40%, toughening layer with felt, film, powder or
Form of fabric is present；Method of the toughening layer on resin glued membrane or prepreg surface is added to be adopted as spraying, coat or directly covering
Lid mode, adding method is by toughening layer toughening agent composition and Determines；Specifically production craft step is：
A. design the sandwich construction of prepreg, the basic model of sandwich construction for two layers or more than two layers+one layer of resin bed or
The construction of more than one layer of fibrous layer+one or more layers of toughening layer, the upper and lower surface of fibrous layer is directly and two layers of resin
Layer contact；
B. according to design prepreg sandwich construction, selection film or impregnation process in add toughening layer, then use
Hot melt preimpregnation equipment produces corresponding prepreg；
Addition toughening layer is specially in membrane process is applied：
B1, first by resin coating film, quantity is rolled up according to the pure resin glued membrane that the design of overall prepreg decides not to add toughening layer
And need add toughening layer glued membrane volume quantity, and on film applicator according to the different method of the formal character of toughening material in phase
Toughening layer is added on the glued membrane answered；
B2, at least two layers pure resin glued membrane and fiber tentatively presoaked in hot melt preimpregnation equipment by hot pressing is compound
Material, then adds at least one layer of glued membrane with toughening layer on preliminary prepreg, by one group of hot pressing roller group further
Wound after pressing；
Addition toughening layer is specially in impregnation process：
B1, first by resin coating film, the quantity that pure resin glued membrane is rolled up is determined according to the design of overall prepreg, whole glued membranes volumes are
Pure resin glued membrane is rolled up；
B2, at least two layers pure resin glued membrane and fiber tentatively presoaked in hot melt preimpregnation equipment by hot pressing is compound
Material, then adds at least one toughening layer according to the different method of the formal character of toughener, according to design it needs to be determined that volume again
Outer addition multilayer pure resin glued membrane, then winds after one group of hot pressing roller group further hot pressing；
Specifically produced using following hot melt preimpregnation equipment：Hot melt preimpregnation equipment include set gradually pressing roller group, first
Release liners winding roller group, can heated type roller set, the second release liners winding roller group, pressing roller group include the pressure of setting symmetrical above and below
Close roller, can heated type roller set a diameter of 6cm-20cm for including more than two couples surface it is smooth can heated type disk roller, at least
One unreeling shaft and at least one Scroll, the first release liners winding roller group, the second release liners wind-up roll group include upper respectively
Under symmetrically arranged release liners wind-up roll.
2. high tenacity sandwich construction prepreg manufacturing process as claimed in claim 1, it is characterised in that：Fibrous layer is that carbon is fine
One or more compositions in dimension, glass fibre, aramid fiber, quartz fibre, fibers form be fibre bundle, one-way fabric,
Multi-axial fabric or blended fabric, fiber areal densities 30gsm-800 gsm.
3. high tenacity sandwich construction prepreg manufacturing process as claimed in claim 1, it is characterised in that：Prepreg is with toughness tree
Resin Composition in fat is the one or more in epoxy resin, phenolic resin, bimaleimide resin and cyanate ester resin
The composition being mixed to get, the resin that every layer of resin bed is used is same identical resin or a variety of resins differed.
4. high tenacity sandwich construction prepreg manufacturing process as claimed in claim 1, it is characterised in that：Toughening layer is thermoplasticity
Toughener, toughener uses polysulfones, polyether-ketone, polyether-ether-ketone, PEI, polyphenylene oxide, polymethyl methacrylate, modification
The mixture of one or more combinations in polyether sulphone and makrolon.
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| CN105623546A (en) * | 2015-12-22 | 2016-06-01 | 中国航空工业集团公司济南特种结构研究所 | Preparation method of reinforced adhesive film |
| CN105733193B (en) * | 2016-03-23 | 2018-05-22 | 航天材料及工艺研究所 | A kind of preparation method of the controllable epoxy resin-base composite material of toughness |
| CN107686658A (en) * | 2016-08-04 | 2018-02-13 | 洛阳尖端技术研究院 | New Tough Bismaleimide Resins cyanate ester resin prepreg and preparation method thereof |
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| CN108017796A (en) * | 2016-11-01 | 2018-05-11 | 深圳光启尖端技术有限责任公司 | A kind of prepreg and its manufacture method |
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| CN109988395B (en) * | 2017-12-29 | 2022-03-18 | 洛阳尖端技术研究院 | Epoxy resin-glass fiber prepreg, resin fiber composite material, preparation method of resin fiber composite material and aviation aircraft |
| CN108858883B (en) * | 2018-05-30 | 2021-07-30 | 江苏兆鋆新材料股份有限公司 | Phenoxy resin prepreg and method for preparing same by hot melting method |
| CN109016723B (en) * | 2018-08-01 | 2021-04-06 | 重庆长安汽车股份有限公司 | Hybrid carbon fiber composite material for automobile |
| CN110951100A (en) * | 2019-10-18 | 2020-04-03 | 成都鲁晨新材料科技有限公司 | Preparation method of self-adhesive flame-retardant prepreg with resin performance difference distribution |
| CN110774674A (en) * | 2019-11-11 | 2020-02-11 | 江苏恒神股份有限公司 | Fiber-reinforced resin-based prepreg and preparation method thereof |
| CN111004407A (en) * | 2019-11-26 | 2020-04-14 | 航天特种材料及工艺技术研究所 | Prepreg and preparation method 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 |
| CN112078148B (en) * | 2020-08-18 | 2022-03-04 | 武汉大学 | Automatic composite material laying device applied to curved surface |
| CN114479358A (en) * | 2020-10-27 | 2022-05-13 | 中国石油化工股份有限公司 | Prepreg toughening resin, prepreg toughening layer, prepreg, preparation method and application thereof |
| CN114683572A (en) * | 2020-12-29 | 2022-07-01 | 上伟（江苏）碳纤复合材料有限公司 | Wind power glass fiber reinforced prepreg and preparation process thereof |
| CN113619161A (en) * | 2021-08-12 | 2021-11-09 | 厦门鑫美和设备制造有限公司 | Four-film prepreg production line and production process thereof |
| CN116003965A (en) * | 2021-10-22 | 2023-04-25 | 中国石油化工股份有限公司 | Prepreg toughening layer |
| CN114536815A (en) * | 2022-01-18 | 2022-05-27 | 威海光威复合材料股份有限公司 | Process method for preparing heavy-gram prepreg through multilayer compounding |
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| CN1923506B (en) * | 2006-07-19 | 2010-08-04 | 中国航空工业第一集团公司北京航空材料研究院 | Toughening composite material lamination board and method for making same |
| ES2718450T3 (en) * | 2011-08-29 | 2019-07-02 | Cytec Tech Corp | Interlaminar hardening of thermoplastic compounds |
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Application publication date: 20150819 Assignee: Suzhou Noen composite materials Co.,Ltd. Assignor: HENGSHEN Co.,Ltd. Contract record no.: X2020320000379 Denomination of invention: Manufacturing technology of high toughness multilayer structure prepreg Granted publication date: 20170912 License type: Common License Record date: 20201218 |