CN102503502A - Method for manufacturing Z-pin reinforced carbon/carbon composite prefabricated part and Z-pin freezing pultrusion and implantation integrated machine - Google Patents
Method for manufacturing Z-pin reinforced carbon/carbon composite prefabricated part and Z-pin freezing pultrusion and implantation integrated machine Download PDFInfo
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- CN102503502A CN102503502A CN2011103213862A CN201110321386A CN102503502A CN 102503502 A CN102503502 A CN 102503502A CN 2011103213862 A CN2011103213862 A CN 2011103213862A CN 201110321386 A CN201110321386 A CN 201110321386A CN 102503502 A CN102503502 A CN 102503502A
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Abstract
The invention relates to a method for manufacturing a Z-pin reinforced carbon/carbon composite prefabricated part and a Z-pin freezing pultrusion and implantation integrated machine and belongs to the technical field of carbon/carbon composite reinforcement. The method comprises the following steps of: infiltrating carbon fibers with a medium which has the boiling temperature lower than the lowest carbonization temperature of the carbon fibers and cannot react with the carbon fibers; then freezing the fibers infiltrated with the medium under the condition of ultralow temperature to prepare a Z-pin; implanting the frozen Z-pin into carbon fiber woven cloth; and finally, according to the physical properties of the infiltrating medium, ensuring the medium in the Z-pin in the Z-pin reinforced carbon fiber woven cloth to be completely volatilized under the decompression condition or also by an auxiliary heating mode. Due to the adoption of the method, the problem that the carbon fibers in the three-dimensional reinforcement are easy to damage in the process of being implanted into the carbon fiber woven cloth is solved, the pure fiber Z-pin is ensured to be successfully implanted, the defects of easiness for layering, poor impact resistance and the like of a fiber three-dimensional reinforced hollow composite are also overcome, and the technical support is provided for application of the composite to the aeronautics and astronautics.
Description
Technical field
The present invention relates to a kind of Z-pin and strengthen carbon/carbon compound material prefab method of manufacture and the freezing pultrusion implantation of Z-pin all-in-one, belong to carbon/carbon compound material enhancement techniques field.
Background technology
Carbon/carbon compound material is to be matrix with carbon, by thomel or its goods (carbon felt or carbon cloth) reinforced composite materials.The key step of its preparation is: precast body moulding → densification → final high-temperature heat treatment.Prefab is to be mixed according to a certain percentage by chopped strand, continuous fibre or the two to weave or form such as mold pressing is processed carbon/carbon goods, as the enhancing skeleton of carbon/carbon compound material.Enhancing prefab forming method commonly used at present has 3 D weaving moulding, acupuncture sew etc.Though these methods have improved the overall performance of fibre three-dimensional enhancing hollow carbon/carbon compound material, and are obvious inadequately to the big reinforced effects of fibre-tendering.The Z-pin enhancement techniques is a kind of novel little to fibre-tendering, the tangible Enhancement Method of reinforced effects.But carbon-fibre composite z-pin makes after soaking into resin solidification by thomel; Carbon/carbon compound material requires the complete charing of resin among the strongthener Z-pin; And resin is difficult to complete charing among the Z-pin, not only increases the final integral performance that cost also reduces finished product.The Z-pin enhancement techniques is applied to the enhancing of laminated wood always, also is not applied to the report of carbon/carbon compound material.The at present three-dimensional preparation difficult point that strengthens the hollow carbon/carbon compound material will pure enhanced carbon fiber for how be implanted to thomel smoothly and works out in the cloth and do not damage fortifying fibre and body material.
Summary of the invention
The purpose of this invention is to provide a kind of Z-pin and strengthen carbon/carbon compound material prefab ME; Solved the problem that thomel damages easily in the three-dimensional enhancing in implanting the carbon fiber woven cloth process; Guaranteed the smooth implantation of pure carbon fiber Z-pin, improved fibre three-dimensional and strengthened the anti-layering of hollow composite material, performance such as shock-resistant.
Summary of the invention:
A kind of Z-pin strengthens carbon/carbon compound material prefab method of manufacture, it is characterized in that comprising following process: (1), thomel is soaked into the medium that boiling point is lower than the minimum carbonization temperature of thomel and does not react with thomel; (2), will soak into thomel behind the medium under the very low temperature state of cooling, being shaped to diameter is the cylindrical freezing Z-pin of 0.3-1mm; (3), with above-mentioned cylindrical freezing Z-pin under the very low temperature state of cooling, be implanted in the carbon fiber woven cloth; (4), according to the physical properties of soaking into medium, under reduced pressure or through boosting, the medium that strengthens among the Z-pin in the carbon fiber woven cloth is volatilized fully.
Realize the above-mentioned freezing pultrusion implantation of the Z-pin all-in-one of stating method; Comprise and put yarn feeding device, liner, immersion liquid groove, pultrusion die, Z-pin liner, implant head, cutting knife, it is characterized in that: this all-in-one also comprises the very low temperature cooling room, and above-mentioned pultrusion die, Z-pin liner and implant head are positioned at the very low temperature cooling room.
Beneficial effect:
Aforesaid method is little to fibre-tendering, and Z-pin finally exists with the form of pure carbon fiber, not only reduces manufacturing cost, also improves the anti-layering of product, performance such as shock-resistant.Pure thomel carries out densification with carbon fiber woven cloth and high temperature carbonization is handled, and just can obtain three-dimensional enhanced carbon/carbon compound material, guarantees the overall performance of material, has effectively brought into play the reinforced effects of fibre composite Z-pin.
The very low temperature cooling room that all-in-one is implanted in above-mentioned freezing pultrusion provides ultra-low temperature surroundings that Z-pin is freezing rapidly, has guaranteed the rigidity of Z-pin in the implantation process.
The very low temperature state of cooling in step in the aforesaid method (2), the step (3) can be realized by the cooled with liquid nitrogen mode.Be to be full of liquid nitrogen in the described very low temperature cooling room.Liquid nitrogen is a kind of very low temperature refrigerative material that effectively provides, can be rapidly that Z-pin is freezing, and improve and implant efficient.
Description of drawings
Fig. 1 implants the all-in-one synoptic diagram for the Z-pin pultrusion;
Label title among the figure: 1, put yarn feeding device, 2, liner, 3, the immersion liquid groove, 4, the very low temperature cooling room, 5, pultrusion die, 6, the Z-pin liner, 7, implant head, 8, cutting knife, 9, carbon fiber woven cloth.
Embodiment
Following examples are further illustrated content of the present invention, but are not used in restriction scope of the present invention.
Embodiment one: combine Fig. 1 that this embodiment is described.The infiltration medium that boiling point is lower than the minimum solidification value of prepreg and does not react with thomel; Medium as water, alcohol, acetone etc. are removed is easily put in the immersion liquid groove 3; Thomel T300 is placed on yarn feeding device 1; Get into immersion liquid groove 3 through fibre guide device 2 guiding; Thomel behind the infiltration medium is shaped to cylindrical freezing Z-pin through the pultrusion die 5 of very low temperature cooling room, utilizes the implant head 7 of very low temperature cooling room to be implanted in the carbon fiber woven cloth 9 freezing Z-pin, according to the physical properties of soaking into medium; Under reduced pressure, Z-pin enhanced carbon fiber woven cloth is raised to room temperature or elevated temperature slightly; The infiltration medium that wherein strengthens Z-pin is volatilized fully, again precast body is carried out a series of processing such as densification and high temperature carbonization of carbon/carbon compound material, promptly obtain fibre composite Z-pin enhanced carbon/carbon compound material.
Embodiment two: combine embodiment one, this embodiment is described.Method in the embodiment one is equally applicable to the thomel of other models.
Claims (4)
1. a Z-pin strengthens carbon/carbon compound material prefab method of manufacture, it is characterized in that comprising following process:
(1), thomel is soaked into the medium that boiling point is lower than the minimum carbonization temperature of thomel and does not react with thomel;
(2), will soak into thomel behind the medium under the very low temperature state of cooling, being shaped to diameter is the cylindrical freezing Z-pin of 0.3-1mm;
(3), with above-mentioned cylindrical freezing Z-pin under the very low temperature state of cooling, be implanted in the carbon fiber woven cloth;
(4), according to the physical properties of soaking into medium, under reduced pressure under the reduced pressure or make through boosting simultaneously that the medium among the strongthener Z-pin volatilizees fully in the carbon fiber woven cloth.
2. strengthen carbon/carbon compound material prefab method of manufacture according to the said Z-pin of claim 1, it is characterized in that: the very low temperature state of cooling in above-mentioned steps (2), the step (3) is realized by the cooled with liquid nitrogen mode.
3. all-in-one is implanted in the freezing pultrusion of Z-pin that realizes the said method of claim 1, comprises and puts yarn feeding device (1), liner (2); Immersion liquid groove (3), pultrusion die (5), Z-pin liner (6); Implant head (7); Cutting knife (8) is characterized in that: this all-in-one also comprises very low temperature cooling room (4), and above-mentioned pultrusion die (5), Z-pin liner (6) and implant head (7) are positioned at very low temperature cooling room (4).
4. all-in-one is implanted in freezing pultrusion according to the Z-pin of the said method of claim 3, it is characterized in that: be full of liquid nitrogen in the above-mentioned very low temperature cooling room (4).
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110321386 CN102503502B (en) | 2011-10-21 | 2011-10-21 | Method for manufacturing Z-pin reinforced carbon/carbon composite prefabricated part and Z-pin freezing pultrusion and implantation integrated machine |
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| CN 201110321386 CN102503502B (en) | 2011-10-21 | 2011-10-21 | Method for manufacturing Z-pin reinforced carbon/carbon composite prefabricated part and Z-pin freezing pultrusion and implantation integrated machine |
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| CN102503502A true CN102503502A (en) | 2012-06-20 |
| CN102503502B CN102503502B (en) | 2013-05-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103274714A (en) * | 2013-06-05 | 2013-09-04 | 东南大学 | Improved Z-pin method for two-dimensional ceramic matrix composite |
Citations (4)
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| EP2039666A2 (en) * | 2007-09-19 | 2009-03-25 | Audi AG | Method and device for siliconising materials containing carbon |
| CN101787504A (en) * | 2010-01-21 | 2010-07-28 | 上海大学 | Preparation method for carbon/carbon-copper composite material |
| CN101856872A (en) * | 2009-04-08 | 2010-10-13 | 上海杰事杰新材料股份有限公司 | Preparation method of continuous fiber reinforced thermoplastic composite material prepreg and equipment thereof |
| CN102059805A (en) * | 2010-10-21 | 2011-05-18 | 李志雄 | Production equipment of enhanced plastic-clad belt made of crude fibre yarn and production process thereof |
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2011
- 2011-10-21 CN CN 201110321386 patent/CN102503502B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2039666A2 (en) * | 2007-09-19 | 2009-03-25 | Audi AG | Method and device for siliconising materials containing carbon |
| CN101856872A (en) * | 2009-04-08 | 2010-10-13 | 上海杰事杰新材料股份有限公司 | Preparation method of continuous fiber reinforced thermoplastic composite material prepreg and equipment thereof |
| CN101787504A (en) * | 2010-01-21 | 2010-07-28 | 上海大学 | Preparation method for carbon/carbon-copper composite material |
| CN102059805A (en) * | 2010-10-21 | 2011-05-18 | 李志雄 | Production equipment of enhanced plastic-clad belt made of crude fibre yarn and production process thereof |
Non-Patent Citations (1)
| Title |
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| 王晓旭，陈利: "复合材料z-pinning技术的应用与发展", 《宇航材料工艺》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103274714A (en) * | 2013-06-05 | 2013-09-04 | 东南大学 | Improved Z-pin method for two-dimensional ceramic matrix composite |
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