CN104015373A - Preparation method of monodirectional preimpregnation narrowband for automatic filament placement - Google Patents
Preparation method of monodirectional preimpregnation narrowband for automatic filament placement Download PDFInfo
- Publication number
- CN104015373A CN104015373A CN201410236705.3A CN201410236705A CN104015373A CN 104015373 A CN104015373 A CN 104015373A CN 201410236705 A CN201410236705 A CN 201410236705A CN 104015373 A CN104015373 A CN 104015373A
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- China
- Prior art keywords
- preimpregnation
- arrowband
- prepreg
- preparation
- cut
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/06—Fibrous reinforcements only
- B29C70/10—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres
- B29C70/16—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
- B29C70/38—Automated lay-up, e.g. using robots, laying filaments according to predetermined patterns
- B29C70/382—Automated fiber placement [AFP]
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Reinforced Plastic Materials (AREA)
Abstract
A convenient preparation method of a monodirectional preimpregnation narrowband for automatic filament placement belongs to the composite material laying and forming field, and mainly comprises the following steps: width prepreg uncoiling, back lining paper rewinding, prepreg slitting, preimpregnation narrowband coating, and spiral rewinding of a coated preimpregnation narrowband. The preimpregnation narrowband for automatic filament placement can be prepared by the method, and is continuous in length, constant in width, and good in unwinding.
Description
Technical field
The present invention relates to a kind of composite material laying shaping field, be specifically related to the preparation method of unidirectional preimpregnation arrowband for a kind of automatic fiber placement.
Background technology
Automatic fiber placement forming technology (Automated Fiber Placement) is development in recent years the most a kind of composite automation forming technique, has high efficiency, high-quality, adaptable technical characterstic.This process using multi beam preimpregnation arrowband (3 ~ 25mm), respectively independently carry, cut off, be laid in mandrel surface, thermoplastic preimpregnation yarn compacting sizing after several preimpregnation yarns boundling under pressure roller being become by piddler head to the prepreg tape (width is adjusted by controlling preimpregnation yarn radical) of a variable-width.Granted publication number has proposed a kind of method of preparing the band of the prepreg with constant width for the patent of CN 103079799 A, for maintaining the width of cutting rear prepreg band, the method is before cutting, adopt the mode of high pressure to cover polymer sheet on prepreg surface, in subsequent operation, polymer sheet plays the effect of dimension type, thereby has guaranteed that the strip width of prepreg is constant.Yet the method exists following shortcoming (1) mechanism complicated, need there is pressue device (2) because institute in prepreg is resinous in its uncured state, still there is certain mobility, therefore cover in polymer sheet process, in prepreg resinous can generation along horizontal the flowing of fiber, band kinetodesma transverse shifting, cause fiber architecture direction to change, may affect final serviceability (3) owing to being that high pressure covers on prepreg surface, therefore when the uncoiling of preimpregnation band, in polymer sheet and the separation process of preimpregnation fillet, will inevitably cause residual on polymer sheet of resin, cause preimpregnation arrowband gel content to change, the final performance of impression.
How to obtain that edge is neat, the uniform preimpregnation of width arrowband is the basis that automatic fiber placement forming technique is applied, how to improve the length of preimpregnation arrowband simultaneously, guarantee the good debatching of preimpregnation arrowband, will have significant contribution to improving the efficiency of automatic fiber placement forming technology.
Summary of the invention
The object of the invention is to solve the problems of the technologies described above, propose a kind of simple method, obtain the required length of automatic fiber placement forming technology continuously, constant width and the good unidirectional preimpregnation arrowband of debatching.
A preparation method for unidirectional preimpregnation arrowband for automatic fiber placement, is characterized in that comprising the following steps: step 1, the uncoiling of wide cut prepreg and the rewinding of backing paper; Step 2, prepreg become some width to equate and constant preimpregnation arrowband through minute cut unit slitting, and step 3, the mould release membrance that utilizes vacuum slot that each surface, root preimpregnation arrowband is pasted originally reclaim; Step 4, each surface, preimpregnation arrowband is covered to wide film again, the wide 1.8-2.2 for preimpregnation narrowband width of film doubly; Step 5, the preimpregnation arrowband after overlay film carries out spiral after-combustion and becomes cylinder again.
Concrete, the raw materials used unidirectional pre-immersion material for preparing by current conventional method.A kind of intermediate prefabricated body that has resin matrix to flood continuous unidirectional fibre of prepreg.Be characterized in fiber substantially in being arranged in parallel, fill full resin matrix and resin matrix between fiber in its uncured state, in performance, present obvious anisotropy, along machine direction, can bear larger tension, and perpendicular to machine direction in conjunction with very weak.
Because resin is in its uncured state and there is certain viscosity, for preventing that adjacent layer from sticking together, the both side surface of prepreg can paste respectively PE film and backing paper (or both sides are all backing paper), because backing paper can produce paper scrap in cutting process, stick to surface, preimpregnation arrowband, pollute, affect the serviceability of prepreg, therefore will before prepreg enters minute cut unit, backing paper be peeled off and rewinding again.
And compare with backing paper, the mould release membrance that another surface of prepreg pastes can not produce and be similar to above-mentioned pollution in cutting process.Meanwhile, the existence of mould release membrance also can prevent in prepreg the resiniferous adhesion at tool surface, therefore can enter a minute cut unit together with prepreg.In sum, for a side, paste the wide cut prepreg that backing paper, a side paste mould release membrance, while cutting, should remove paper tape film, and for both sides, all paste the prepreg of backing paper, before cutting, backing paper all should be removed.
Based on prepreg, along perpendicular to the weak feature of machine direction combination, at cutter, can there be two kinds of selections: dise knife is cut with razor and cut in form.For dise knife, cut, upper bottom knife cooperatively interacts, and upper and lower cutter, with the front of prepreg and then rotation, cuts into some preimpregnation arrowbands by prepreg.For razor, cut, blade is equidistantly arranged perpendicular to machine direction, when prepreg passes through blade, just along machine direction, scratches, and obtains the some preimpregnation arrowbands that width is equal.The width of preimpregnation arrowband has blade space to determine.
While adopting razor to cut, because cutting edge immobilizes, blade heat-sinking capability is poor, along with constantly carrying out of cutting, cutting edge is under the continuous friction of fiber, temperature constantly raises, and because the total institute of prepreg is resinous in its uncured state, pile up at the easy blade cutting edge of resin place simultaneously, make blade rust, cut Quality Down, when serious, also can produce damage to fiber, affect Mechanical Properties of Products.For preventing the above-mentioned generation manifesting, at cutter, place installs cooling device additional, and the blade processing of lowering the temperature improves the viscosity of resin simultaneously, has guaranteed to cut quality.
The effect of the mould release membrance that prepreg upper and lower surface pastes and backing paper is only the isolation of interlayer, simultaneously in order to facilitate follow-up use, is easy to the separated of mould release membrance and prepreg, and the bond strength between mould release membrance and prepreg is very little.Therefore after preimpregnation material strip film is cut, the preimpregnation arrowband that width is identical is easy to occur separated with release arrowband, if directly preimpregnation arrowband and release arrowband are carried out to after-combustion in this kind of situation, cannot guarantee the good isolation of preimpregnation arrowband interlayer, so be covered with the prepreg of mould release membrance for initial surface, after cutting, the original mould release membrance pasting in its surface removed.
In order to realize the good debatching of preimpregnation arrowband, before after-combustion, need preimpregnation arrowband again to paste PE film.PE film width is about 2 times of all standings to preimpregnation arrowband with assurance of preimpregnation narrowband width.For follow-up easy to use, the order of preimpregnation arrowband and mould release membrance band should be preimpregnation arrowband upper.
While becoming cylinder with mould release membrance band again after-combustion in preimpregnation arrowband, in order to improve the length of the preimpregnation arrowband that monotubular reels, adopt the mode of spiral rolling, and pitch (be Scroll while rotating a circle, this axle is mobile distance vertically) remains constant in wrapup procedure.
By this method can prepare easily length continuously, the automatic fiber placement preimpregnation arrowband of constant width, good debatching.
The preparation method of unidirectional preimpregnation arrowband for described automatic fiber placement, is characterized in that: described step 2 adopts razor, is also accompanied by the cooling procedure of cutter in this process.
The preparation method of unidirectional preimpregnation arrowband for described automatic fiber placement, is characterized in that: between described step 2 and described step 5, also have by tension force isolation processes, by tension-isolation means make to cut with after-combustion process in the suffered power of prepreg keep apart.This step is to prevent that rewind tension from producing harmful effect to cutting process.The rewind tension that prevents each arrowband in preimpregnation arrowband after-combustion process is inhomogeneous, and quality is cut in impact, make to cut with after-combustion process in the suffered power of prepreg keep apart, do not interfere with each other, guarantee to cut and after-combustion quality.
The preparation method of unidirectional preimpregnation arrowband for described automatic fiber placement, it is characterized in that: when when a volume prepreg is cut end, the length of preimpregnation arrowband not yet reaches target length, prepreg is carried out to continued access, repeating step 1 ~ step 5 is until length reaches requirement then.By heat, overlap, to realize the serialization of preimpregnation tow length.
The preparation method of unidirectional preimpregnation arrowband for described automatic fiber placement, is characterized in that: when the preimpregnation arrowband described in step 4 pastes wide film again, the relative position of the two be preimpregnation arrowband upper, wide film under.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present invention;
Number in the figure title:
1, wide cut prepreg volume; 2, the backing paper axle that unrolls; 3, flat cutter divides cut unit; 4, cooling device; 5, dise knife divides cut unit; 6, vacuum slot; 7, tension force isolated location; 8 preimpregnation arrowband after-combustion axles; 9 mould release membrance barrels.
Specific embodiment
Below in conjunction with schematic diagram of the present invention, the present invention is further elaborated.After 1 uncoiling of wide cut prepreg, and before entering the razor minute cut unit 3 or dise knife minute cut unit 5 that blade is arranged in parallel, the backing paper on wide cut prepreg 1 surface need be peeled off and rewinding to backing paper backrush axle 2, when prepreg during through razor minute cut unit 3 or dise knife minute cut unit 5 just slitting become the some preimpregnation arrowbands that width is equal.In razor cutting process, cutting edge immobilizes, the poor easy heating of cutter heat-sinking capability, cause buildup of resin, quality is cut in impact, cooling device 4 will continue to blow cold wind to razor in cutting process, keep on the one hand the temperature at razor cutting edge place to keep in the reasonable scope, also be near the cooling of the resin in prepreg cutting edge on the other hand, improve its viscosity.For a side, paste backing paper, one side pastes the wide cut prepreg 1 of mould release membrance, mould release membrance also will enter a minute cut unit 3 or 5 with prepreg, and slitting becomes the mould release membrance fillet with preimpregnation arrowband same widths, but thereby this adhesion strength is little, be easy to occur separation, cannot form zone isolation to preimpregnation arrowband, for convenience of follow-up use, by vacuum slot 6, mould release membrance fillet is reclaimed.Tension force isolated location 7 is kept apart the cutting process of the rewind tension of preimpregnation arrowband and prepreg, prevent because of the inconsistent decline that causes cutting quality of each suffered tension force in preimpregnation arrowband, after overtension isolated location, preimpregnation arrowband after-combustion axle 8 will carry out after-combustion rolling to each preimpregnation arrowband, for preventing that preimpregnation arrowband from bonding occurring and guarantee all standing of good mould release membrance to preimpregnation arrowband, width is that the mould release membrance fillet of 2 times of preimpregnation arrowbands will be drawn from mould release membrance barrel 9, paste at preimpregnation arrowband downside surface common after-combustion.For realizing the maximization of monotubular preimpregnation arrowband length, will adopt the mode of spiral winding to carry out after-combustion to preimpregnation arrowband, the continuity that can heat overlap joint property have guaranteed preimpregnation arrowband length of prepreg, after-combustion to target length can be for automatic fiber placement technique.
The present invention is limited to the illustrative embodiments presenting in description and accompanying drawing never in any form.Within all combinations of the embodiment that illustrates and describe (part) are interpreted as clearly and are incorporated to this description and be interpreted as and fall within the scope of the present invention clearly.And in the scope of the present invention of summarizing as claims, a lot of distortion are possible.In addition, any reference marker in claims should be configured to limit the scope of the invention.
Claims (5)
1. a preparation method for unidirectional preimpregnation arrowband for automatic fiber placement, is characterized in that comprising the following steps:
Step 1, the uncoiling of wide cut prepreg and the rewinding of backing paper;
Step 2, prepreg become some width to equate and constant preimpregnation arrowband through minute cut unit slitting,
Step 3, the mould release membrance that utilizes vacuum slot that each surface, root preimpregnation arrowband is pasted originally reclaim;
Step 4, each surface, preimpregnation arrowband is covered to wide film again, the wide 1.8-2.2 for preimpregnation narrowband width of film doubly;
Step 5, the preimpregnation arrowband after overlay film carries out spiral after-combustion and becomes cylinder again.
2. the preparation method of unidirectional preimpregnation arrowband for automatic fiber placement according to claim 1, is characterized in that: described step 2 adopts razor, is also accompanied by the cooling procedure of cutter in this process.
3. the preparation method of unidirectional preimpregnation arrowband for automatic fiber placement according to claim 1, it is characterized in that: between described step 2 and described step 5, also have by tension force isolation processes, by tension-isolation means make to cut with after-combustion process in the suffered power of prepreg keep apart.
4. the preparation method of unidirectional preimpregnation arrowband for automatic fiber placement according to claim 1, it is characterized in that: when when a volume prepreg is cut end, the length of preimpregnation arrowband not yet reaches target length, prepreg is carried out to continued access, repeating step 1 ~ step 5 is until length reaches requirement then.
5. the preparation method of unidirectional preimpregnation arrowband for automatic fiber placement according to claim 1, is characterized in that: when the preimpregnation arrowband described in step 4 pastes wide film again, the relative position of the two be preimpregnation arrowband upper, wide film under.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410236705.3A CN104015373A (en) | 2014-05-30 | 2014-05-30 | Preparation method of monodirectional preimpregnation narrowband for automatic filament placement |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410236705.3A CN104015373A (en) | 2014-05-30 | 2014-05-30 | Preparation method of monodirectional preimpregnation narrowband for automatic filament placement |
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| CN104015373A true CN104015373A (en) | 2014-09-03 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105128365A (en) * | 2015-08-26 | 2015-12-09 | 航天材料及工艺研究所 | Slitting preparation method suitable for hot-melt pre-impregnated filament |
| CN109580476A (en) * | 2018-11-14 | 2019-04-05 | 中航复合材料有限责任公司 | A kind of detection method of automatic fiber placement preimpregnation tow surface viscosity |
| CN111372769A (en) * | 2017-11-23 | 2020-07-03 | 赫克塞尔合成有限公司 | Intermediate materials and methods of making such materials |
| CN111573388A (en) * | 2020-05-22 | 2020-08-25 | 常州新创航空科技有限公司 | Process method of prepreg splitting machine |
| CN111573387A (en) * | 2020-05-22 | 2020-08-25 | 常州新创航空科技有限公司 | Automatic preimpregnation material cutting machine of high accuracy |
| CN111823439A (en) * | 2020-06-19 | 2020-10-27 | 中航复合材料有限责任公司 | Preparation method of ultrathin and ultra-soft prepreg tows for automatic fiber laying |
| CN111941822A (en) * | 2020-08-06 | 2020-11-17 | 南京航空航天大学 | Preparation method of unidirectional high-viscosity prepreg narrow tape for automatic laying |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07124944A (en) * | 1993-11-09 | 1995-05-16 | Toray Ind Inc | Manufacture of narrow prepreg material |
| CN1467144A (en) * | 2002-07-09 | 2004-01-14 | 飞赫科技股份有限公司 | Method and apparatus for stripping release paper |
| CN103079799A (en) * | 2010-08-12 | 2013-05-01 | 赫克塞尔合成有限公司 | Improved composite materials |
| US20130284847A1 (en) * | 2012-04-27 | 2013-10-31 | Web Industries, Inc. | Prepreg tape slitting apparatus and method |
| US20140087198A1 (en) * | 2012-09-26 | 2014-03-27 | Web Industries, Inc. | Prepreg tape slitting method and apparatus |
-
2014
- 2014-05-30 CN CN201410236705.3A patent/CN104015373A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07124944A (en) * | 1993-11-09 | 1995-05-16 | Toray Ind Inc | Manufacture of narrow prepreg material |
| CN1467144A (en) * | 2002-07-09 | 2004-01-14 | 飞赫科技股份有限公司 | Method and apparatus for stripping release paper |
| CN103079799A (en) * | 2010-08-12 | 2013-05-01 | 赫克塞尔合成有限公司 | Improved composite materials |
| US20130284847A1 (en) * | 2012-04-27 | 2013-10-31 | Web Industries, Inc. | Prepreg tape slitting apparatus and method |
| US20140087198A1 (en) * | 2012-09-26 | 2014-03-27 | Web Industries, Inc. | Prepreg tape slitting method and apparatus |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105128365A (en) * | 2015-08-26 | 2015-12-09 | 航天材料及工艺研究所 | Slitting preparation method suitable for hot-melt pre-impregnated filament |
| CN111372769A (en) * | 2017-11-23 | 2020-07-03 | 赫克塞尔合成有限公司 | Intermediate materials and methods of making such materials |
| CN109580476A (en) * | 2018-11-14 | 2019-04-05 | 中航复合材料有限责任公司 | A kind of detection method of automatic fiber placement preimpregnation tow surface viscosity |
| CN111573388A (en) * | 2020-05-22 | 2020-08-25 | 常州新创航空科技有限公司 | Process method of prepreg splitting machine |
| CN111573387A (en) * | 2020-05-22 | 2020-08-25 | 常州新创航空科技有限公司 | Automatic preimpregnation material cutting machine of high accuracy |
| CN111823439A (en) * | 2020-06-19 | 2020-10-27 | 中航复合材料有限责任公司 | Preparation method of ultrathin and ultra-soft prepreg tows for automatic fiber laying |
| CN111941822A (en) * | 2020-08-06 | 2020-11-17 | 南京航空航天大学 | Preparation method of unidirectional high-viscosity prepreg narrow tape for automatic laying |
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Application publication date: 20140903 |