CN108794785A - prepreg and preparation method thereof - Google Patents
prepreg and preparation method thereof Download PDFInfo
- Publication number
- CN108794785A CN108794785A CN201710282308.3A CN201710282308A CN108794785A CN 108794785 A CN108794785 A CN 108794785A CN 201710282308 A CN201710282308 A CN 201710282308A CN 108794785 A CN108794785 A CN 108794785A
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- Prior art keywords
- resin
- flame
- prepreg
- retardant modified
- additive
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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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- 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
- C08J2361/00—Characterised by the use of condensation polymers of aldehydes or ketones; Derivatives of such polymers
- C08J2361/34—Condensation polymers of aldehydes or ketones with monomers covered by at least two of the groups C08J2361/04, C08J2361/18, and C08J2361/20
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- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Reinforced Plastic Materials (AREA)
Abstract
The invention discloses a kind of prepregs and preparation method thereof.This method includes：Flame-retardant modified resin is formed, the flame-retardant modified resin includes resin matrix and additive；Flame-retardant modified resin is formed into resin film；And impregnation processing is carried out, and resin film is compound with fibre reinforced materials, form prepreg, wherein in being impregnated with the step of handling, additive improves at least one mobility and wellability of resin matrix.This method uses novel resin matrix to improve flame-retarding characteristic, and uses additive to improve mobility and wellability, to obtain flame-retarding characteristic, mechanical strength and stability-enhanced prepreg.
Description
Technical field
The present invention relates to field of compound material, relate more specifically to a kind of prepreg and preparation method thereof.
Background technology
The typical case of component made of composite material is the strong, dead weight strong using structure, heat-resisting on the fuselage of aircraft
The composite material of the characteristics such as light can be obviously improved power performance and the safety of aircraft.Composite material be by two kinds or two kinds with
Upper material of different nature passes through material of the method composition with new capability physically or chemically.Due to its internal a variety of materials
It makes up for each other's deficiencies and learn from each other in performance, generates synergistic effect, the comprehensive performance of composite material can be made to be better than former composition material and expire
The a variety of different requirements of foot.
Prepreg is the intermediate materials for manufacturing composite material.The preparation method of prepreg includes dry and wet at present.?
In dry process, toner is attached on fiber, is melted by part, formation resin is discontinuous, fiber is not filled by resin
A kind of saturating compound of sub-dip.In wet processing, fiber is impregnated using resin solution, by drying and curing, forms resin
A kind of compound that substantially continuous, fiber is thoroughly impregnated by resin.
Prepreg can obtained into excellent mechanical strength, but also phase for when manufacturing composite material, not only it is expected
It hopes and obtains excellent environmental stability (stability i.e. under hot and humid environment) and flame-retarding characteristic.But due to present
The resin matrix that prepreg uses is mainly the thermosetting resins such as epoxy resin, bimaleimide resin, and flame retardant property is poor,
Therefore the flame retardant property using the composite material of such prepreg manufacture is equally poor.
Invention content
In view of this, the purpose of the present invention is to provide a kind of prepreg and preparation method thereof, using novel resin base
Body is to improve flame-retarding characteristic, and uses additive to improve mobility and wellability.
According to an aspect of the present invention, a kind of preparation method of prepreg is provided, including：Form flame-retardant modified resin, institute
It includes resin matrix and additive to state flame-retardant modified resin；Flame-retardant modified resin is formed into resin film；And impregnation processing is carried out,
Resin film is compound with fibre reinforced materials, form prepreg, wherein in being impregnated with the step of handling, additive improves resin
At least one mobility and wellability of matrix.
Preferably, the resin matrix includes benzoxazine resin, and the additive includes even selected from Silica hydrogel and silane
Join at least one of agent.
Preferably, the step of forming flame-retardant modified resin include：Resin matrix is mixed with additive, and in resin base
The first predetermined temperature near the softening point temperature of body is stirred dispersion.
Preferably, first predetermined temperature is 70 degrees Celsius to 90 degrees Celsius.
Preferably, the step of forming resin film includes that the flame-retardant modified resin is coated in release paper.
Preferably, it being coated using smearing equipment, flame-retardant modified resin is heated to molten condition by the smearing equipment,
And including a pair of of applicator roll relative to each other, the thickness of resin film is controlled by adjusting the spacing of applicator roll.
Preferably, the content according to resin matrix in prepreg determines the thickness of resin film.
Preferably, being impregnated with the step of handling includes：Fibre reinforced materials is clipped between two layers of resin film；And second
Kept for the predetermined time under predetermined temperature and predetermined pressure.
Preferably, second predetermined temperature is 70 degrees Celsius to 90 degrees Celsius.
According to another aspect of the present invention, the prepreg according to above-mentioned method preparation is provided, including：Flame-retardant modified resin
And fibre reinforced materials, the flame-retardant modified resin include the benzoxazine resin as resin matrix, and as additive
Silica hydrogel and silane coupling agent.
Preferably, the fibre reinforced materials includes selected from quartz fibre, aramid fiber, carbon fiber, silica fiber fabric, aramid fiber
One kind in fabric, carbon fabric.
Prepreg according to the ... of the embodiment of the present invention substitutes epoxy resin, bismaleimide tree using benzoxazine resin
Fat.Benzoxazine resin is the resin for having heat resistance and anti-flammability, so as to improve the heat resistance and anti-flammability of prepreg.
However, benzoxazine resin there is a problem that poor fluidity and wellability difference.In this embodiment, by benzoxazine resin with
Additive mixes, wherein Silica hydrogel is used to improve the mobility of resin matrix, and silane coupling agent is used for benzoxazine resin
Surface modification is carried out, to improve the wellability of benzoxazine resin.Further, in mixed process, under heating conditions
It is dispersed with stirring so that benzoxazine resin mobility improves, to obtain the right modified resin of the evenly dispersed resistance of additive.
Since the additive in resin film improves the mobility and wellability of resin matrix, resin matrix and fiber it
Between be firmly combined with, to improve the mechanical strength and temperature stability of prepreg.
Description of the drawings
By referring to the drawings to the description of the embodiment of the present invention, above-mentioned and other purposes of the invention, feature and
Advantage will be apparent from.
Fig. 1 shows the flow chart of preimpregnation preparation method for material according to the ... of the embodiment of the present invention.
Specific implementation mode
Hereinafter reference will be made to the drawings is more fully described the present invention.In various figures, identical element is using similar attached
Icon is remembered to indicate.For the sake of clarity, the various pieces in attached drawing are not necessarily to scale.In addition, may not show in figure
Go out certain well known parts.
Many specific details of the present invention, such as the structure of component, material, size, processing work is described hereinafter
Skill and technology, to be more clearly understood that the present invention.But it just as the skilled person will understand, can not press
The present invention is realized according to these specific details.
It should be appreciated that when describing the structure of component, it is known as positioned at another floor, another area when by a floor, a region
When domain " above " or " top ", can refer to above another layer, another region, or its with another layer, it is another
Also include other layers or region between a region.Also, if by part turnover, this layer, a region will be located at it is another
Layer, another region " following " or " lower section ".
Fig. 1 shows the flow chart of preimpregnation preparation method for material according to the ... of the embodiment of the present invention.The resin matrix of the prepreg is
Benzoxazine resin, and its mobility and wellability are improved using additive.
In step S01, flame-retardant modified resin is formed using being dispersed with stirring.
In this step, according to scheduled ratio, benzoxazine resin and additive is added in stirring dispersion machine and carried out
It is dispersed with stirring.Benzoxazine resin has good heat resistance and anti-flammability as resin matrix, but mobility and wellability are poor.
Additive is for example including Silica hydrogel and silane coupling agent.Silica hydrogel is used to improve the mobility of resin matrix, and silane coupling agent is used
In carrying out surface modification to benzoxazine resin, to improve the wellability of benzoxazine resin.In this embodiment, benzoxazine
The mass ratio of resin, Silica hydrogel and silane coupling agent is, for example, 80：15：5.
In being dispersed with stirring, stirring dispersion machine utilizes the high-speed rotation of zigzag circular dispersion disk, stronger to generate
Resin raw material quickly can be smashed and disperseed by the shearing force of power.Stepless speed regulation may be used in stirring dispersion machine, and rotating speed is for example
It is arbitrarily adjusted between 0-1440 revs/min.
Preferably, it is stirred dispersion under heating conditions, benzoxazine resin softens under heating conditions, to
Mobility can be improved, realize the uniform mixing with additive and is bonded.In this embodiment, the temperature used in being dispersed with stirring
Degree is, for example, 70 degrees Celsius to 90 degrees Celsius.
Prepreg according to the ... of the embodiment of the present invention substitutes epoxy resin, bismaleimide tree using benzoxazine resin
Fat.Benzoxazine resin is the resin for having heat resistance and anti-flammability, so as to improve the heat resistance and anti-flammability of prepreg.
Benzoxazine resin and additive are mixed, wherein Silica hydrogel is used to improve the mobility of resin matrix, and silane coupling agent is used
In carrying out surface modification to benzoxazine resin, to improve the wellability of benzoxazine resin.
Further, it in mixed process, is dispersed with stirring under heating conditions so that benzoxazine resin mobility changes
It is kind, to obtain the right modified resin of the evenly dispersed resistance of additive.
In step S02, resin film is formed using device for coating.In this step, it according to the resin content of regulation, that is, sets
Content of the aliphatic radical body in finally formed prepreg, calculates the thickness of resin film.What the smearing equipment formed previous step
Flame-retardant modified resin is heated to molten condition, and then molten resin is uniformly coated in release paper, after cooling, that is, obtains
Obtain resin film.
The smearing equipment is for example including a pair of of applicator roll relative to each other.The flame-retardant modified resin of molten condition is by coating
Gap between roller is coated in release paper.By adjusting the spacing of applicator roll, the thickness of resin film can be controlled.
In step S03, resin film and fibre reinforced materials are compounded to form prepreg using containing dipping machine.Fiber reinforcement material
Material includes quartz fibre, aramid fiber, carbon fiber or its fabric.After the release paper of removal surface resin film, by resin film
It is supplied to together containing dipping machine with fibre reinforced materials.After cooling, that is, prepreg is obtained.
This contains between fibre reinforced materials is clipped in two layers of resin film by dipping machine, is then carried out under scheduled temperature and pressure
Impregnation is handled.The heating temperature used in pre-preg is related to the softening point of resin matrix.In this embodiment, according to benzene
And the softening point of oxazines resin, the temperature used in impregnation processing is, for example, 70 degrees Celsius to 90 degrees Celsius.In advance when processing
The pressure of middle use makes fiber be impregnated in resin for driving air to be discharged from resin film.However, the pressure
Cannot be excessive, in case the resin film of molten condition is lost in.
In this step, the additive in resin film improves the mobility and wellability of resin matrix so that resin matrix
Being firmly combined between fiber, to improve the mechanical strength and temperature stability of prepreg.
It should be noted that herein, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also include other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
As described above according to the embodiment of the present invention, there is no all details of detailed descriptionthe for these embodiments, also not
Limit the specific embodiment that the invention is only described.Obviously, as described above, can make many modifications and variations.This explanation
These embodiments are chosen and specifically described to book, is in order to preferably explain the principle of the present invention and practical application, belonging to making
Technical field technical staff can utilize modification of the invention and on the basis of the present invention to use well.The present invention is only by right
The limitation of claim and its full scope and equivalent.
Claims (11)
1. a kind of preparation method of prepreg, which is characterized in that the method includes：
Flame-retardant modified resin is formed, the flame-retardant modified resin includes resin matrix and additive；
Flame-retardant modified resin is formed into resin film；And
Impregnation processing is carried out, resin film is compound with fibre reinforced materials, prepreg is formed,
Wherein, in being impregnated with the step of handling, the additive improves at least one mobility and wellability of resin matrix.
2. preimpregnation preparation method for material according to claim 1, which is characterized in that the resin matrix includes benzoxazine tree
Fat, the additive include at least one selected from Silica hydrogel and silane coupling agent.
3. preimpregnation preparation method for material according to claim 2, which is characterized in that the step of forming flame-retardant modified resin is wrapped
It includes：Resin matrix is mixed with additive, and the first predetermined temperature near the softening point temperature of resin matrix is stirred
Mix dispersion.
4. preimpregnation preparation method for material according to claim 3, which is characterized in that first predetermined temperature is 70 degrees Celsius
To 90 degrees Celsius.
5. preimpregnation preparation method for material according to claim 1, which is characterized in that the step of forming resin film includes will be described
Flame-retardant modified resin is coated in release paper.
6. preimpregnation preparation method for material according to claim 5, which is characterized in that it is coated using smearing equipment, it is described
Flame-retardant modified resin is heated to molten condition by smearing equipment, and includes a pair of of applicator roll relative to each other, by adjusting painting
The thickness of the spacing control resin film of cloth rewinder roll.
7. preimpregnation preparation method for material according to claim 6, which is characterized in that according to resin matrix containing in prepreg
Amount determines the thickness of resin film.
8. preimpregnation preparation method for material according to claim 1, which is characterized in that being impregnated with the step of handling includes：
Fibre reinforced materials is clipped between two layers of resin film；And
Kept for the predetermined time under the second predetermined temperature and predetermined pressure.
9. preimpregnation preparation method for material according to claim 8, which is characterized in that second predetermined temperature is 70 degrees Celsius
To 90 degrees Celsius.
10. a kind of prepreg prepared according to any one of claim 1-9 the methods, which is characterized in that the prepreg
Including：Flame-retardant modified resin and fibre reinforced materials, the flame-retardant modified resin include the benzoxazine tree as resin matrix
Fat, and Silica hydrogel and silane coupling agent as additive.
11. prepreg according to claim 10, which is characterized in that the fibre reinforced materials includes fine selected from quartz
One kind in dimension, aramid fiber, carbon fiber, silica fiber fabric, kevlar fabric, carbon fabric.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710282308.3A CN108794785A (en) | 2017-04-26 | 2017-04-26 | prepreg and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710282308.3A CN108794785A (en) | 2017-04-26 | 2017-04-26 | prepreg and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108794785A true CN108794785A (en) | 2018-11-13 |
Family
ID=64069248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710282308.3A Pending CN108794785A (en) | 2017-04-26 | 2017-04-26 | prepreg and preparation method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN108794785A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101353567A (en) * | 2007-07-24 | 2009-01-28 | 成都思摩纳米技术有限公司 | Heat insulation flame-retardant material |
| CN104508022A (en) * | 2012-07-25 | 2015-04-08 | 东丽株式会社 | Prepreg and carbon-fiber-reinforced composite material |
| CN105038224A (en) * | 2015-07-23 | 2015-11-11 | 江苏恒神股份有限公司 | Benzoxazine prepreg composite and preparation method |
-
2017
- 2017-04-26 CN CN201710282308.3A patent/CN108794785A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101353567A (en) * | 2007-07-24 | 2009-01-28 | 成都思摩纳米技术有限公司 | Heat insulation flame-retardant material |
| CN104508022A (en) * | 2012-07-25 | 2015-04-08 | 东丽株式会社 | Prepreg and carbon-fiber-reinforced composite material |
| CN105038224A (en) * | 2015-07-23 | 2015-11-11 | 江苏恒神股份有限公司 | Benzoxazine prepreg composite and preparation method |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181113 |
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| RJ01 | Rejection of invention patent application after publication |