CN104629265A - Aramid fiber woven fabric prepreg and preparation method thereof - Google Patents
Aramid fiber woven fabric prepreg and preparation method thereof Download PDFInfo
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- CN104629265A CN104629265A CN201510080552.2A CN201510080552A CN104629265A CN 104629265 A CN104629265 A CN 104629265A CN 201510080552 A CN201510080552 A CN 201510080552A CN 104629265 A CN104629265 A CN 104629265A
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Abstract
The invention discloses aramid fiber woven fabric prepreg. The aramid fiber woven fabric prepreg comprises an aramid fiber woven fabric and epoxy resin as well as a piece of release paper which is directly adhered on the outer surface of an aramid fiber woven fabric layer, wherein the epoxy resin is impregnated on the aramid fiber woven fabric layer; besides, the invention also discloses a preparation method of the aramid fiber woven fabric prepreg by adopting a hot melting two-step method, and the preparation method of the aramid fiber woven fabric prepreg comprises the steps of membrane manufacturing and preimpregnation. The aramid fiber woven fabric prepreg maintains the advantages of aramid fiber, and application range of a high-performance aramid fiber product is expanded; meanwhile, the aramid fiber woven fabric prepreg is obtained by adopting a manner of preimpregnating the aramid fiber woven fabric by virtue of epoxy resin, the method is simple, and subsequent processing and moulding are easy; and the aramid fiber woven fabric prepreg disclosed by the invention can be widely applied to multiple fields of aerospace aviation, national defence, cars, buildings and plates.
Description
Technical field
The present invention relates to woven cloth prepreg field, be specifically related to a kind of aramid fiber woven cloth prepreg and preparation method thereof.
Background technology
The full name of aramid fiber is " aromatic polyamide fibre ", is the novel special purpose synthon of a class.In aramid fiber, the kind of most practical value has two: one to be the meta-aramid fibers that molecular chain arranges indentation; One is that molecular chain arranges linearly para-aramid fiber.Aramid fiber is widely used in information industry, civil construction, lock packing, the structured material of airliner and fire-resistant, heat-resisting protective clothing etc.According to statistics, current aramid fiber product is used for flak jackets, the helmet etc. and accounts for 7% ~ 8%, and aerospace material, physical culture material account for 40%, and tyre framework material, conveyor materials etc. account for 20%, and high-strength rope etc. account for 13%.And as strongthener, aramid fiber has its irreplaceable effect.Particularly in the high-performance fiber extended familys be a splendid legacy, aramid fiber is with the heatproof combustion resistance of its brilliance, electrical insulating property and mechanical property, have superstrength, the excellent kind of high-modulus concurrently, become the important foundation raw material of advanced protective material and structured material, not only exhibit one's skill to the full in leading-edge fields such as Aeronautics and Astronautics, national defence, electronics, and hew out more wide Civilian Space, become the high-tech special fibre that world today's purposes is the widest, output is maximum, the most rising.
In prior art, carbon fiber prepreg, aramid fiber prepreg have more application, but the research of aramid fiber woven cloth prepreg is just few, in order to make aramid fiber be more widely used, prepares aramid fiber woven cloth prepreg imperative.
Summary of the invention
In order to overcome the deficiencies in the prior art, the object of this invention is to provide a kind of epoxy resin-impregnated aramid fiber woven cloth prepreg, and present invention also offers the preparation method of this aramid fiber woven cloth prepreg.
To achieve these goals, the technical scheme taked of the present invention is as follows:
A kind of aramid fiber woven cloth prepreg, comprises aramid fiber base fabric and is immersed in epoxy resin wherein, also comprises direct note and invests separate-type paper on aramid fiber base fabric outside surface.
Further, the fiber in described aramid fiber layer is two-way braiding parallel arranged, i.e. plain weave and twill, utilizes epoxy resin mutually to flood between aramid fiber.
Further, described epoxy resin is warm molten epoxy-resin systems in being, its composition and proportioning as follows:
ATN series epoxy resins: 4-8%; Epoxy resin E-51:20-30%; Epoxy resin E-44: 10-12%; Epoxy resin E-20:27-33%; Micronization Dyhard RU 100: 7-10%; Ureas promotor: 2-2.5%; Hydrated aluminum oxide: 15-19%; White carbon black thickening material: 1-2%.
A hot melt two step method preparation method for described aramid fiber woven cloth prepreg, comprises masking and preimpregnation.
Further, described masking comprises the following steps:
1) flame-retarded resin matrix is placed in mixing tank fully to mix;
2) to be heatedly after 80 DEG C, be transported to glue spreader, regulate the spacing of glue spreader and the travel line speed of separate-type paper, the glued membrane of obtained different thickness;
3) detect the thickness of glued membrane or the area density of glued membrane with infrared rays instrument, reduced the temperature of glued membrane by cooling plate, reduce its state of cure;
4) rolling, packaging, deposit in freezer stand-by.
Further, described epoxy resin is warm molten epoxy-resin systems in being, its composition and proportioning as follows:
ATN series epoxy resins: 4-8%; Epoxy resin E-51:20-30%; Epoxy resin E-44: 10-12%; Epoxy resin E-20:27-33%; Micronization Dyhard RU 100: 7-10%; Ureas promotor: 2-2.5%; Hydrated aluminum oxide: 15-19%; White carbon black thickening material: 1-2%.
Further, described preimpregnation comprises the following steps:
1) draw fiber from creel, after adjustment of tonicity, collection filament plate boundling, flattening process, reach the width of regulation;
2) draw ready made glued membrane from upper and lower glued membrane roller, and and processbearing astrocyte sandwich structure, successively by several groups of hot-pressing rollers, make resin matrix melting, in fiber embedded resin matrix;
3) cooling reduces prepreg temperature;
4) finally carry out trimming, cover PE film, rolling, obtained aramid fiber woven cloth prepreg.
The exceptionai performance of aramid fiber and goods thereof is in particular in the following aspects:
(1) non-conductive property, in the engineering in modern times, as subway, tunnel, electric railway and industrial premises etc., all require very high to insulativity, in the reinforcement and strengthening of these engineerings, aramid fiber has absolute predominance, provides a best choice also to these fields.
(2) good corrosion resistance, particularly resistance to alkali corrosion, that other FRP matrix materials are incomparable, because seawater has very strong corrodibility to concrete structure, mainly because the inside chloride ion-containing is more, cause concrete carbonization, steel bar corrosion expands, so in the reinforcing and protection of some sea port dock engineerings, aramid fiber is best selection.
(3) good impact resistance, because the bullet mould of aramid fiber is 118Gpa, ductility is good especially, and its unit elongation is 1.8%, so it is be used as war products, as flak jackets etc. abroad when just starting.Reinforcing some with it requires in very tight structure, as the bridge pier etc. of trunk line routes to impact.
(4) anti-dynamic load anti-fatigue performance is good, although the tensile strength of carbon fiber is very high, but because it is a kind of hard brittle material, long-term dead load can only be born, if bear dynamic load for a long time, just its intensity can not be ensured, aramid fiber does not then limit by this, be mainly used in war products in early days, and be the main raw of flak jackets, because its Toughness Ratio is better, so its anti-fatigue ability is just very good accordingly, in addition, the anti-shear ability of aramid fiber is also the strongest in all FRP materials.
(5) easy construction, mainly following step,----bottom solvent impregnated resin--paste aramid fabric--outer solvent impregnated resin--surfacecti proteon, and operation is very simple for brushing primer in surface treatment.Do not need large-scale lifting machine equipment, generally do not need to do chamfering, as long as to be 10ram just passable for the chamfering of square pillar, because aramid fiber is a kind of organic materials, fine with the wetting property of resin, and curing time is very short is generally several hours, other fiber similar then needed for one to two week.
The present invention adds a kind of woven cloth prepreg not changing under current initial rinsing method prerequisite, this aramid fiber woven cloth prepreg not only inherits the advantage of aramid fiber, and widened the range of application of high-performance aramid fiber goods, the present invention simultaneously obtains aramid fiber woven cloth prepreg by the mode of epoxy resin preimpregnation aramid fiber woven cloth, method is simple, and following process is shaping simple and easy.It is multi-field that aramid fiber prepreg of the present invention can be widely used in space flight and aviation, national defence, automobile, building, sheet material etc.
Accompanying drawing explanation
Fig. 1 is the schema of film making process of the present invention;
Fig. 2 is the schema of preimpregnation operation of the present invention.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Aramid fiber woven cloth prepreg of the present invention, comprises aramid fiber base fabric and be immersed in epoxy resin wherein, and directly note invests the separate-type paper on aramid fiber base fabric outside surface.Fiber in described aramid fiber base fabric is two-way braiding parallel arranged, i.e. plain weave and twill, utilizes epoxy resin mutually to flood between aramid fiber.
Aramid fiber woven cloth prepreg of the present invention is prepared by hot melt two step method, and this preparation method comprises masking and preimpregnation.Masking comprises step: 1) fire retarding epoxide resin matrix is placed in mixing tank and fully mixes; 2) to be heatedly after 80 DEG C, be transported to glue spreader, regulate the spacing of glue spreader and the travel line speed of separate-type paper, the glued membrane of obtained different thickness; 3) detect the thickness of glued membrane or the area density of glued membrane with infrared rays instrument, reduced the temperature of glued membrane by cooling plate, reduce its state of cure; 4) rolling, packaging, deposit in freezer stand-by.Preimpregnation comprises step: 1) draw fiber from creel, after adjustment of tonicity, collection filament plate boundling, flattening process, reaches the width of regulation; 2) draw ready made glued membrane from upper and lower glued membrane roller, and and processbearing astrocyte sandwich structure, successively by several groups of hot-pressing rollers, make resin matrix melting, in fiber embedded resin matrix; 3) cooling reduces prepreg temperature; 4) finally carry out trimming, cover PE film, rolling, obtained aramid fiber woven cloth prepreg.
Resin used in the present invention is warm molten epoxy-resin systems in being researched and developed voluntarily by applicant, and its composition and proportioning are: ATN series epoxy resins: 4-8%; Epoxy resin E-51:20-30%; Epoxy resin E-44: 10-12%; Epoxy resin E-20:27-33%; Micronization Dyhard RU 100: 7-10%; Ureas promotor: 2-2.5%; Hydrated aluminum oxide: 15-19%; White carbon black thickening material: 1-2%.
Now by following examples illustrate used in the present invention in the preparation process of warm molten epoxy resin.
embodiment 1
Described epoxy resin is made up of the component of following weight ratio:
ATN series epoxy resins: 8%; E-51:23%; E-44:10%; E-20:30%; Micronization Dyhard RU 100: 9%; Ureas promotor: 2%; Hydrated aluminum oxide: 17%; White carbon black thickening material: 1%.
1) ATN series epoxy resins, E-51, E-44 and E-20 epoxy resin are put into the baking oven preheating 7 hours of 110 DEG C, moisture and little volatile matter material in removing resin;
2) weigh a small amount of liquid epoxies respectively and quantitative solidifying agent, promotor are put into dough batch and is pre-mixed, stir 25min, make solidifying agent and promotor resin paste respectively;
3) resin paste that step 2 is obtained is ground two to three times on three-roll grinder, obtain viscosity less, the more uniform solidifying agent of powder diameter and promotor masterbatch;
4) epoxy resin of preheating is put into reactor to stir, and froth in vacuum, cool to 80 DEG C simultaneously;
5) treat that resin temperature drops to 70 DEG C, add ground solidifying agent and promotor masterbatch respectively, and hydrated aluminum oxide white carbon black thickening material, mix 20 minutes in reactor high speed, powerful vacuum removes bubble simultaneously;
6) mixed resin is flowed into pallet respectively under swager effect, by 5kg mono-block comminute, at room temperature after naturally cooling, by a carton 6 pieces (30kg) packaging, obtain epoxy resin for prepreg system finished product.
embodiment 2
Described resin is made up of the component of following weight ratio:
ATN series epoxy resins: 4%; E-51:20%; E-44:12%; E-20:33%; Micronization Dyhard RU 100: 8%; Ureas promotor: 2.5%; Hydrated aluminum oxide: 19%; White carbon black thickening material: 1.5%.
1) ATN series epoxy resins, E-51, E-44 and E-20 epoxy resin are put into the baking oven preheating 8 hours of 120 DEG C, moisture and little volatile matter material in removing resin;
2) weigh a small amount of liquid epoxies respectively and quantitative solidifying agent, promotor are put into dough batch and is pre-mixed, stir 30min, make solidifying agent and promotor resin paste respectively;
3) resin paste that step 2 is obtained is ground two to three times on three-roll grinder, obtain viscosity less, the more uniform solidifying agent of powder diameter and promotor masterbatch;
4) epoxy resin of preheating is put into reactor to stir, and froth in vacuum, cool to 80 DEG C simultaneously;
5) treat that resin temperature drops to 75 DEG C, add ground solidifying agent and promotor masterbatch respectively, and hydrated aluminum oxide white carbon black thickening material, mix 30 minutes in reactor high speed, powerful vacuum removes bubble simultaneously;
6) mixed resin is flowed into pallet respectively under swager effect, by 5kg mono-block comminute, at room temperature after naturally cooling, by a carton 6 pieces (30kg) packaging, obtain epoxy resin for prepreg system finished product.
embodiment 3
Described resin is made up of the component of following weight ratio:
ATN series epoxy resins: 6%; E-51:30%; E-44:11%; E-20:27%; Micronization Dyhard RU 100: 7%; Ureas promotor: 2%; Hydrated aluminum oxide: 15%; White carbon black thickening material: 2%.
1) ATN series epoxy resins, E-51, E-44 and E-20 epoxy resin are put into the baking oven preheating 9 hours of 150 DEG C, moisture and little volatile matter material in removing resin;
2) weigh a small amount of liquid epoxies respectively and quantitative solidifying agent, promotor are put into dough batch and is pre-mixed, stir 40min, make solidifying agent and promotor resin paste respectively;
3) resin paste that step 2 is obtained is ground two to three times on three-roll grinder, obtain viscosity less, the more uniform solidifying agent of powder diameter and promotor masterbatch;
4) epoxy resin of preheating is put into reactor to stir, and froth in vacuum, cool to 80 DEG C simultaneously;
5) treat that resin temperature drops to 73 DEG C, add ground solidifying agent and promotor masterbatch respectively, and hydrated aluminum oxide white carbon black thickening material, mix 25 minutes in reactor high speed, powerful vacuum removes bubble simultaneously;
6) mixed resin is flowed into pallet respectively under swager effect, by 5kg mono-block comminute, at room temperature after naturally cooling, by a carton 6 pieces (30kg) packaging, obtain epoxy resin for prepreg system finished product.
More than describe the preferred embodiments of the present invention in detail, but the present invention is not limited to these embodiments, can various change be carried out in application range of the present invention.Although just illustrate the preferred embodiments of the present invention above, in the very clear scope substantially not departing from novelty of the present invention and advantage of person of ordinary skill in the field, various amendment can be carried out to exemplary embodiment.
Claims (7)
1. an aramid fiber woven cloth prepreg, is characterized in that, comprises aramid fiber base fabric and epoxy resin, and directly note invests the separate-type paper on aramid fiber base fabric outside surface;
Wherein epoxy resin impregnated at aramid fiber base fabric.
2. aramid fiber woven cloth prepreg according to claim 1, is characterized in that, the fiber in described aramid fiber braided layer is two-way braiding parallel arranged, i.e. plain weave and twill, utilizes epoxy resin mutually to flood between aramid fiber.
3. basalt fibre prepreg according to claim 2, is characterized in that, described epoxy resin is warm molten epoxy-resin systems in being, its composition and proportioning as follows:
ATN series epoxy resins: 4-8%; Epoxy resin E-51:20-30%; Epoxy resin E-44: 10-12%; Epoxy resin E-20:27-33%; Micronization Dyhard RU 100: 7-10%; Ureas promotor: 2-2.5%; Hydrated aluminum oxide: 15-19%; White carbon black thickening material: 1-2%.
4. a hot melt two step method preparation method for aramid fiber woven cloth prepreg according to claim 1, is characterized in that, comprise masking and preimpregnation.
5. preparation method according to claim 4, is characterized in that, described masking comprises the following steps:
1) epoxy resin-base is placed in mixing tank fully to mix;
2) to be heatedly after 80 DEG C, be transported to glue spreader, regulate the spacing of glue spreader and the travel line speed of separate-type paper, the glued membrane of obtained different thickness;
3) detect the thickness of glued membrane or the area density of glued membrane with infrared rays instrument, reduced the temperature of glued membrane by cooling plate, reduce its state of cure;
4) rolling, packaging, deposit in freezer stand-by.
6. method according to claim 5, is characterized in that, described epoxy resin is warm molten epoxy-resin systems in being, its composition and proportioning as follows:
ATN series epoxy resins: 4-8%; Epoxy resin E-51:20-30%; Epoxy resin E-44: 10-12%; Epoxy resin E-20:27-33%; Micronization Dyhard RU 100: 7-10%; Ureas promotor: 2-2.5%; Hydrated aluminum oxide: 15-19%; White carbon black thickening material: 1-2%.
7. method according to claim 4, is characterized in that, described preimpregnation comprises the following steps:
1) draw fiber from creel, after adjustment of tonicity, collection filament plate boundling, flattening process, reach the width of regulation;
2) draw ready made glued membrane from upper and lower glued membrane roller, and and processbearing astrocyte sandwich structure, successively by several groups of hot-pressing rollers, make resin matrix melting, in fiber embedded resin matrix;
3) cooling reduces prepreg temperature;
4) finally carry out trimming, cover PE film, rolling, obtained aramid fiber woven cloth prepreg.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105109068A (en) * | 2015-09-02 | 2015-12-02 | 江苏恒神股份有限公司 | Method for preparing presoak materials for forming non-hot-pressing tank |
| CN109664435A (en) * | 2018-06-07 | 2019-04-23 | 中山市富达运动器材有限公司 | A kind of manufacture craft of fibre knitting cloth |
| CN110861382A (en) * | 2019-10-18 | 2020-03-06 | 成都鲁晨新材料科技有限公司 | Solvent-free aramid bulletproof prepreg and composite material thereof |
| CN113831688A (en) * | 2021-09-30 | 2021-12-24 | 山东天畅环保科技股份有限公司 | Door and window profile made of aramid fiber reinforced composite material |
| CN115216231A (en) * | 2022-08-25 | 2022-10-21 | 安徽佳力奇先进复合材料科技股份公司 | Single-sided resin prepreg and processing method thereof |
| CN117922125A (en) * | 2024-03-22 | 2024-04-26 | 烟台泰和新材高分子新材料研究院有限公司 | Composite material formed by multilayer structures, preparation method of composite material and wind turbine blade |
-
2015
- 2015-02-15 CN CN201510080552.2A patent/CN104629265A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105109068A (en) * | 2015-09-02 | 2015-12-02 | 江苏恒神股份有限公司 | Method for preparing presoak materials for forming non-hot-pressing tank |
| CN109664435A (en) * | 2018-06-07 | 2019-04-23 | 中山市富达运动器材有限公司 | A kind of manufacture craft of fibre knitting cloth |
| CN110861382A (en) * | 2019-10-18 | 2020-03-06 | 成都鲁晨新材料科技有限公司 | Solvent-free aramid bulletproof prepreg and composite material thereof |
| CN113831688A (en) * | 2021-09-30 | 2021-12-24 | 山东天畅环保科技股份有限公司 | Door and window profile made of aramid fiber reinforced composite material |
| CN115216231A (en) * | 2022-08-25 | 2022-10-21 | 安徽佳力奇先进复合材料科技股份公司 | Single-sided resin prepreg and processing method thereof |
| CN117922125A (en) * | 2024-03-22 | 2024-04-26 | 烟台泰和新材高分子新材料研究院有限公司 | Composite material formed by multilayer structures, preparation method of composite material and wind turbine blade |
| CN117922125B (en) * | 2024-03-22 | 2024-06-11 | 烟台泰和新材高分子新材料研究院有限公司 | Composite material formed by multilayer structures, preparation method of composite material and wind turbine blade |
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