CN110789149A - Method for preparing reinforced shell through prepreg sliver - Google Patents
Method for preparing reinforced shell through prepreg sliver Download PDFInfo
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- CN110789149A CN110789149A CN201910954185.2A CN201910954185A CN110789149A CN 110789149 A CN110789149 A CN 110789149A CN 201910954185 A CN201910954185 A CN 201910954185A CN 110789149 A CN110789149 A CN 110789149A
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- prepreg
- sliver
- glue
- winding
- impregnated
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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
- B29C70/30—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
- B29C70/34—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 and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
-
- 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
Abstract
The invention provides a method for preparing a reinforced shell by prepreg slivers, which comprises the following steps: the method comprises the steps of preparing pre-impregnated glue, preparing pre-impregnated slivers, winding the pre-impregnated slivers, laying skins, curing and forming and demolding, wherein fibers in a glue groove are wound on a yarn cylinder to form the slivers, glass cloth is used for separating and sucking glue between every two layers of the slivers, the resin is heated and melted only once, repeated heating is not needed for sucking the glue, advanced curing caused by improvement of the polymerization degree of the resin is avoided, and the prepared reinforcing rib is compact and has greatly enhanced strength and rigidity.
Description
Technical Field
The invention relates to the technical field of composite material reinforced shell forming, in particular to a method for preparing a reinforced shell through prepreg slivers.
Background
The composite material reinforced shell is a bearing structure which is frequently adopted in the field of composite material preparation at present, and has high structural efficiency. Besides the civil field, the method is also commonly used in the special fields of projectile structure cabin sections, rocket structure cabin sections, space satellites or camera bearing cylinders and the like.
The stiffened shell is usually prepared by wet winding and curing by matching an autoclave or a metal matched mould to form the stiffened shell in one step (forming the stiffened shell together with the skin) or in multiple steps (curing the stiffened shell by firstly curing reinforcing ribs and then laying the skin).
The wet winding process is characterized in that glue is continuously absorbed to control the volume content of reinforcing rib fibers in the forming process. For the resin with high crystallization or high viscosity and difficult glue absorption at room temperature of part of the resin matrix, the viscosity of the resin needs to be reduced by heating so as to be suitable for a glue absorption process. The continuous glue absorption leads to the increase of the thermal history, thereby improving the polymerization degree of the resin. For some resin matrixes with narrow process windows (such as cyanate ester resin), the solidification is easy to start before the final pressure solidification, and finally, the reinforcing ribs are not compact enough, so that the product quality is poor or the product is scrapped.
Disclosure of Invention
The invention aims to overcome the characteristic that part of resin matrix is not suitable for a wet winding process (needing continuous heating and glue absorption), and provides a method for preparing a reinforced shell by using prepreg slivers.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method of making a reinforced shell from prepreg sliver, comprising the steps of:
step S1, preparing pre-dipped glue:
placing the winding resin in a glue tank, and heating until the resin is molten to obtain pre-impregnated glue;
step S2, preparing prepreg sliver:
installing the dewatered fiber mass on a creel, placing fibers on the fiber mass in a glue groove containing pre-impregnated glue, winding the fibers in the glue groove on a yarn cylinder by using a five-axis numerical control fiber winding machine to obtain pre-impregnated yarn strips, and separating and sucking the glue between every two layers of yarn strips by using glass cloth;
step S3, winding prepreg sliver:
winding the pre-impregnated sliver on the yarn drum into a circular rib groove of a mold by using a limiter under the tension of a creel by using a five-axis numerical control fiber winding machine to form a circular rib; winding the pre-impregnated sliver on the yarn cylinder into a longitudinal rib groove of a mold by using a five-axis numerical control fiber winding machine to form longitudinal ribs, or winding the pre-impregnated sliver into the longitudinal rib groove of the mold by a manual winding mode to form the longitudinal ribs;
step S4, laying the skin:
laying prepreg on the surface of the wound die to form a skin;
step S5, curing and forming:
placing the mold on which the skin is laid in a curing furnace for curing and molding;
step S6, demolding:
and (4) removing the die to obtain the reinforced shell prepared by the pre-impregnated sliver.
In the present invention, a cyanate resin, an epoxy resin, or a bismaleimide resin is preferably used as the resin.
Preferably, the number of fiber clusters after water removal is no more than four clusters.
Preferably, the fiber has a strength of 2000MPa to 5500MPa and a modulus of 150GPa to 350 GPa.
Preferably, the fiber volume content of the prepreg sliver is 55 ± 5%.
Preferably, the limiter comprises a yarn guide roller group and a yarn nozzle, the yarn guide roller group comprises at least two yarn guide rollers, and the yarn guide roller group and the yarn nozzle are sequentially arranged between the creel and the die through support supports.
The invention has the beneficial effects that:
1. according to the method for preparing the reinforced shell by the pre-impregnated sliver, fibers in the glue groove are wound on the yarn cylinder to form the sliver, glass cloth is used for separating and sucking glue between every two layers of the sliver, wherein the resin only needs to be heated and melted once, and the resin does not need to be heated and sucked repeatedly, so that advanced curing caused by the increase of the polymerization degree of the resin is avoided, the prepared reinforced shell is compact, the fiber volume content is stable, and the strength and the rigidity are also greatly enhanced.
2. The invention provides a method for preparing a reinforced shell by using pre-impregnated slivers, wherein when the pre-impregnated slivers are wound (see figure 1), yarn drums are arranged on a creel, the pre-impregnated slivers on the yarn drums pass through a yarn guide roller group, the pre-impregnated slivers passing through the yarn guide roller group are wavy, yarn guide rollers pass through the inner sides of wave crests and wave troughs, the tension of the pre-impregnated slivers can be controlled by the support of two adjacent yarn guide rollers, the pre-impregnated slivers passing through the yarn guide rollers continuously pass through a yarn nozzle, the pre-impregnated slivers passing through the yarn nozzle are wound in rib grooves of a mould by using a five-axis numerical control fiber winding machine, a plurality of yarn drums can be arranged on the creel, a plurality of groups of yarn guide roller groups and the yarn nozzle can also be arranged on a support, the distance between two adjacent yarn nozzles is the same as that between the two rib grooves, so that the pre-impregnated slivers can be.
Drawings
Fig. 1 is a schematic view of the wrapping of prepreg sliver in accordance with the present invention.
Detailed Description
The invention will now be further described with reference to the following examples:
example 1
A method of making a reinforced shell from prepreg sliver comprising the steps of:
step S1, preparing pre-dipped glue:
placing cyanate ester resin for winding in a glue tank, heating to 90 ℃, and melting the resin to obtain pre-dipped glue;
step S2, preparing prepreg sliver:
installing a dehydrated fiber cluster (3 clusters, Zhongzishenying hawk SYT55G-12K carbon fiber with the modulus of about 280GPa and the strength of about 5300MPa) on a creel, placing the fiber on the fiber cluster into a glue groove containing prepreg glue, winding the fiber in the glue groove (maintained at 90 ℃ for 10-15 min) on a yarn cylinder by using a five-axis numerical control fiber winding machine to obtain prepreg slivers, separating and sucking the glue between every two layers of slivers by using glass cloth (the thickness is 0.1-0.2 mm), and controlling the volume content of the fiber to be 55 +/-5%;
step S3, winding prepreg sliver:
winding the pre-impregnated sliver on the yarn drum into a circular rib groove of a mold by using a limiter under the tension of a creel by using a five-axis numerical control fiber winding machine to form a circular rib; winding the pre-impregnated sliver on the yarn cylinder into a longitudinal rib groove of a mold by using a five-axis numerical control fiber winding machine to form longitudinal ribs, or winding the pre-impregnated sliver into the longitudinal rib groove of the mold by a manual winding mode to form the longitudinal ribs;
step S4, laying the skin:
laying prepreg on the surface of the wound die to form a skin;
step S5, curing and forming:
closing the die after the skin is laid, and placing the die in a curing furnace for curing and forming (the temperature is 150 ℃, and the pressure is 0.2 MPa-0.4 MPa);
step S6, demolding:
and (4) removing the die to obtain the reinforced shell prepared by the pre-impregnated sliver.
Example 2
A method of making a reinforced shell from prepreg sliver comprising the steps of:
step S1, preparing pre-dipped glue:
placing epoxy resin (for winding) in a glue tank, heating to 80 ℃, and melting the resin to obtain pre-dipped glue;
step S2, preparing prepreg sliver:
installing a dehydrated fiber cluster (3 clusters, Zhongzishenying hawk SYT55G-12K carbon fiber with the modulus of about 280GPa and the strength of about 5300MPa) on a creel, placing the fiber on the fiber cluster into a glue groove containing prepreg glue, winding the fiber in the glue groove on a yarn cylinder by using a five-axis numerical control fiber winding machine to obtain prepreg yarn strips, separating and sucking the glue between every two layers of yarn strips by using glass cloth (the thickness is 0.1-0.2 mm), and controlling the volume content of the fiber to be 55 +/-5%;
step S3, winding prepreg sliver:
winding the pre-impregnated sliver on the yarn drum into a circular rib groove of a mold by using a limiter under the tension of a creel by using a five-axis numerical control fiber winding machine to form a circular rib; winding the pre-impregnated sliver on the yarn cylinder into a longitudinal rib groove of a mold by using a five-axis numerical control fiber winding machine to form longitudinal ribs, or winding the pre-impregnated sliver into the longitudinal rib groove of the mold by a manual winding mode to form the longitudinal ribs;
step S4, laying the skin:
laying prepreg on the surface of the wound die to form a skin;
step S5, curing and forming:
closing the die after the skin is laid, and placing the die in a curing furnace for curing and forming (the temperature is 150 ℃, and the pressure is 0.2 MPa-0.4 MPa);
step S6, demolding:
and (4) removing the die to obtain the reinforced shell prepared by the pre-impregnated sliver.
Example 3
A method of making a reinforced shell from prepreg sliver comprising the steps of:
step S1, preparing pre-dipped glue:
putting bismaleimide resin (for winding) into a glue tank, heating to 130 ℃, and melting the resin to obtain pre-dipped glue;
step S2, preparing prepreg sliver:
installing the dehydrated fiber clusters (3 clusters, Zhongshenying hawk SYT55G-12K carbon fibers with the modulus of about 280GPa and the strength of about 5300MPa) on a creel, placing the fibers on the fiber clusters in a glue groove containing prepreg glue, winding the fibers in the glue groove on a yarn barrel by using a five-axis numerical control fiber winding machine to obtain prepreg yarns, and separating and sucking the glue between every two layers of yarns by using glass cloth (the thickness is 0.1-0.2 mm);
step S3, winding prepreg sliver:
winding the pre-impregnated sliver on the yarn drum into a circular rib groove of a mold by using a limiter under the tension of a creel by using a five-axis numerical control fiber winding machine to form a circular rib; winding the pre-impregnated sliver on the yarn cylinder into a longitudinal rib groove of a mold by using a five-axis numerical control fiber winding machine to form longitudinal ribs, or winding the pre-impregnated sliver into the longitudinal rib groove of the mold by a manual winding mode to form the longitudinal ribs;
step S4, laying the skin:
laying prepreg on the surface of the wound die to form a skin;
step S5, curing and forming:
placing the mould with the skin laid thereon in a curing furnace for curing molding (the temperature is 170 ℃, and the pressure is 0.2 MPa-0.4 MPa);
step S6, demolding:
and (4) removing the die to obtain the reinforced shell prepared by the pre-impregnated sliver.
The process of winding prepreg sliver using a five-axis numerically controlled filament winding machine and a stop as in examples 1-3 above is illustrated in figure 1.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (6)
1. A method of making a reinforced shell from prepreg sliver, comprising the steps of:
step S1, preparing pre-dipped glue:
placing the winding resin in a glue tank, and heating until the resin is molten to obtain pre-impregnated glue;
step S2, preparing prepreg sliver:
installing the dewatered fiber mass on a creel, placing fibers on the fiber mass in a glue groove containing pre-impregnated glue, winding the fibers in the glue groove on a yarn cylinder by using a five-axis numerical control fiber winding machine to obtain pre-impregnated yarn strips, and separating and sucking the glue between every two layers of yarn strips by using glass cloth;
step S3, winding prepreg sliver:
winding the pre-impregnated sliver on the yarn drum into a circular rib groove of a mold by using a limiter under the tension of a creel by using a five-axis numerical control fiber winding machine to form a circular rib; winding the pre-impregnated sliver on the yarn cylinder into a longitudinal rib groove of a mold by using a five-axis numerical control fiber winding machine to form longitudinal ribs, or winding the pre-impregnated sliver into the longitudinal rib groove of the mold by a manual winding mode to form the longitudinal ribs;
step S4, laying the skin:
laying prepreg on the surface of the wound die to form a skin;
step S5, curing and forming:
placing the mold on which the skin is laid in a curing furnace for curing and molding;
step S6, demolding:
and (4) removing the die to obtain the reinforced shell prepared by the pre-impregnated sliver.
2. A method of making a reinforced shell from prepreg slivers according to claim 1, wherein the resin is cyanate ester, epoxy or bismaleimide resin.
3. A method of making a reinforced shell from prepreg sliver as claimed in claim 1 wherein the number of fibre flocks after water removal is no more than four flocks.
4. A method of manufacturing a reinforced shell by prepreg slivers according to claim 1, wherein the fibres have a strength of 2000MPa to 5500MPa and a modulus of 150GPa to 350 GPa.
5. A method of making a reinforced shell by prepreg slivers according to claim 1, wherein the prepreg sliver has a fibre volume content of 55 ± 5%.
6. The method of claim 1, wherein the retainer comprises a guide roller set and a nozzle, the guide roller set comprises at least two guide rollers, and the guide roller set and the nozzle are supported by a bracket and are sequentially arranged between the creel and the die.
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| CN201910954185.2A CN110789149B (en) | 2019-10-09 | 2019-10-09 | Method for preparing reinforced shell through prepreg sliver |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112265288A (en) * | 2020-09-02 | 2021-01-26 | 长春长光宇航复合材料有限公司 | Preparation method of single-side reinforced structure carbon fiber composite material plate |
| CN115609715A (en) * | 2022-12-02 | 2023-01-17 | 阜南县锐发工艺品有限公司 | Preparation method of anti-impact high-strength wicker component |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104552992A (en) * | 2014-12-27 | 2015-04-29 | 西安航天复合材料研究所 | Method for increasing fiber volume content during wet-process laying and winding of thick-wall composite component |
| CN108407332A (en) * | 2018-03-23 | 2018-08-17 | 航天材料及工艺研究所 | A kind of composite material grid stressed-skin construction part compression-moulding methods |
-
2019
- 2019-10-09 CN CN201910954185.2A patent/CN110789149B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104552992A (en) * | 2014-12-27 | 2015-04-29 | 西安航天复合材料研究所 | Method for increasing fiber volume content during wet-process laying and winding of thick-wall composite component |
| CN108407332A (en) * | 2018-03-23 | 2018-08-17 | 航天材料及工艺研究所 | A kind of composite material grid stressed-skin construction part compression-moulding methods |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112265288A (en) * | 2020-09-02 | 2021-01-26 | 长春长光宇航复合材料有限公司 | Preparation method of single-side reinforced structure carbon fiber composite material plate |
| CN115609715A (en) * | 2022-12-02 | 2023-01-17 | 阜南县锐发工艺品有限公司 | Preparation method of anti-impact high-strength wicker component |
| CN115609715B (en) * | 2022-12-02 | 2023-10-13 | 阜南县锐发工艺品有限公司 | Preparation method of impact-resistant high-strength wicker member |
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