CN106830964A - A kind of lightweight carbon fibre composite and its preparation technology - Google Patents

A kind of lightweight carbon fibre composite and its preparation technology Download PDF

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CN106830964A
CN106830964A CN201611241906.8A CN201611241906A CN106830964A CN 106830964 A CN106830964 A CN 106830964A CN 201611241906 A CN201611241906 A CN 201611241906A CN 106830964 A CN106830964 A CN 106830964A
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carbon
fibre composite
lightweight
carbon fiber
precast body
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葛联峰
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Guangzhou Kai Yao Asset Management Co Ltd
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Abstract

The invention discloses a kind of lightweight carbon fibre composite and its preparation technology, this kind of composite is, with carbon fiber and quartz fibre precast body as skeleton, aluminum oxide, silicon nitride and boron carbide to be filled between the space of skeleton；By percentage to the quality, each component content is：Carbon fiber 20~35%, quartz fibre 10~25%, aluminum oxide 10~25%, silicon nitride 10~15%, boron carbide 10~15%.Lightweight carbon fibre composite density of the invention is in 1.5g/cm3Hereinafter, in more than 220MPa, mass loss is only 10 under 2100 DEG C of aerobic environments for more than tensile strength 180MPa, bending strength and compressive strength‑5g/cm2S magnitudes, have the advantages that lightweight, mechanical property are good and thermal shock resistance is good.

Description

A kind of lightweight carbon fibre composite and its preparation technology
Technical field
The present invention relates to a kind of composite, and in particular to a kind of lightweight carbon fibre composite and its preparation technology, category In new material technology field.
Background technology
Carbon fiber excellent in mechanical performance, is the manufactured chemical's fiber that will do not melted in heat treatment process, through thermally-stabilised oxidation What the techniques such as treatment, carbonization treatment and graphitization were made.Carbon fiber is mainly made up of carbon, and its phosphorus content is different with species And it is different, typically more than 90%.Carbon fiber has high temperature resistant, rub resistance, conduction, heat conduction and corrosion-resistant etc., but its with it is general Carbon materials is different, and its profile has significant anisotropy, softness, it is possible to various fabrics are processed into, along fiber axis side To showing intensity higher.
Carbon fiber is not used alone typically, but is added to resin, metal, ceramics or concrete etc. as reinforcing material In material, composite is constituted, prepared composite can extensively be used in aircraft construction material, electromagnetic shielding except electric material The numerous areas such as material, industrial robot, drive shaft.
The space but existing carbon fibre composite lightweight performance still has greatly improved, its mechanical property and heat resistanceheat resistant are rushed Hitting performance can not meet the high standards in high-grade, precision and advanced field, limit its application field.
The content of the invention
The purpose of the present invention is to overcome above-mentioned the deficiencies in the prior art, there is provided a kind of lightweight carbon fibre composite.
Present invention also offers this kind of preparation technology of lightweight carbon fibre composite.
To achieve the above object, the present invention uses following technical proposals：
A kind of lightweight carbon fibre composite, is with carbon fiber and quartz fibre precast body as skeleton, between the space of skeleton Filling aluminum oxide, silicon nitride and boron carbide；By percentage to the quality, each component content is：Carbon fiber 20~35%, quartz fibre 10~25%, aluminum oxide 10~25%, silicon nitride 10~15%, boron carbide 10~15%.
Preferably, carbon fiber surface also includes 1.5~2 μm of matrix carbon.
Preferably, the carbon fiber and quartz fibre precast body are defined three-dimensional or three-dimensional, including acupuncture or thin volume puncture.
Preferably, the carbon fiber is T300 or T700 aerospace level.
Preferably, the average grain diameter of the aluminum oxide, silicon nitride and boron carbide is 0.5~2 μm.
A kind of preparation technology of above-mentioned lightweight carbon fibre composite, including step：
(1) carbon fiber and the blended acupuncture of quartz fibre or thin volume are punctured, obtains precast body；
(2) aluminum oxide, silicon nitride and boron carbide are poured into 5~10 times of absolute ethyl alcohols of weight, ultrasonic disperse 1~2 is small When, ball-milling treatment 5~6 hours removes absolute ethyl alcohol, and drying obtains final product hybrid ceramic powder；
(3) precast body of step (1) is well mixed with the hybrid ceramic powder of step (2), and high temperature in a vacuum furnace Sintering, obtains final product lightweight carbon fibre composite；Wherein, sintering temperature is 1600~2200 DEG C, and sintering time is 2~3 hours.
Preferably, step (1) also includes heavy carbon process step, is that precast body is incubated into 20 under the conditions of 950~1000 DEG C ~45 minutes, it is processed as 2~3 times, obtains final product the precast body that surface covers matrix carbon.
Preferably, the rotational speed of ball-mill in step (2) is 500~600 revs/min.
Preferably, mixed method is to be total to 300~500 revs/min of mixing speed in grinder in step (3) It is mixed.
Beneficial effects of the present invention：
Composite of the invention be with carbon fiber and quartz fibre precast body as skeleton, and between the space of skeleton fill Aluminum oxide, silicon nitride and boron carbide and obtain, obtained by the skeleton built as carbon fiber and quartz fibre precast body is significantly reduced Cross a river the weight of material, the aluminum oxide filled with reference to skeleton space, silicon nitride and boron carbide improve the mechanical property of product and anti- Thermal shock resistance properties.
After tested, lightweight carbon fibre composite density of the invention is in 1.5g/cm3Hereinafter, tensile strength 180MPa with On, in more than 220MPa, mass loss is only 10 under 2100 DEG C of aerobic environments for bending strength and compressive strength-5g/cm2S is measured Level, has the advantages that lightweight, mechanical property are good and thermal shock resistance is good.
Specific embodiment
With reference to embodiment, the present invention will be further elaborated, it should explanation, the description below merely to The present invention is explained, its content is not defined.
Embodiment 1：
A kind of lightweight carbon fibre composite, is with carbon fiber (T300 aerospace level, its surface includes 1.5 μm of matrix carbon) Be skeleton with quartz fibre precast body, fill between the space of skeleton aluminum oxide (0.5 μm of particle diameter), silicon nitride (0.5 μm of particle diameter) and Boron carbide (0.5 μm of particle diameter)；By percentage to the quality, each component content is：Carbon fiber 20%, quartz fibre 25%, aluminum oxide 25%, silicon nitride 15%, boron carbide 15%.
Wherein, carbon fiber and quartz fibre precast body are defined three-dimensional, and thin volume punctures and obtain.
A kind of preparation technology of above-mentioned lightweight carbon fibre composite, including step：
(1) carbon fiber and the blended acupuncture of quartz fibre or thin volume are punctured, obtains precast body；Then precast body is existed 20 minutes are incubated under the conditions of 950 DEG C, so heavy carbon is processed 2 times, obtains final product the precast body that surface covers matrix carbon；
(2) aluminum oxide, silicon nitride and boron carbide are poured into 5 times of absolute ethyl alcohols of weight, ultrasonic disperse 1 hour, 500 Rev/min ball-milling treatment 5 hours, removes absolute ethyl alcohol, and drying obtains final product hybrid ceramic powder；
(3) precast body of step (1) is well mixed with the hybrid ceramic powder of step (2), and high temperature in a vacuum furnace Sintering, obtains final product lightweight carbon fibre composite；Wherein, mixed method is to be entered with 300 revs/min of mixing speed in grinder Row blending, sintering temperature is 1600 DEG C, and sintering time is 2 hours.
Embodiment 2：
A kind of lightweight carbon fibre composite, be with carbon fiber (T700 aerospace level, its surface includes 2 μm of matrix carbon) and Quartz fibre precast body is that aluminum oxide (2 μm of particle diameter), silicon nitride (2 μm of particle diameter) and boron carbide are filled between skeleton, the space of skeleton (2 μm of particle diameter)；By percentage to the quality, each component content is：Carbon fiber 35%, quartz fibre 10%, aluminum oxide 25%, nitridation Silicon 15%, boron carbide 15%.
Wherein, carbon fiber and quartz fibre precast body are three-dimensional, and thin volume punctures and obtain.
A kind of preparation technology of above-mentioned lightweight carbon fibre composite, including step：
(1) carbon fiber and the blended acupuncture of quartz fibre or thin volume are punctured, obtains precast body；Then precast body is existed 45 minutes are incubated under the conditions of 1000 DEG C, so heavy carbon is processed 3 times, obtains final product the precast body that surface covers matrix carbon；
(2) aluminum oxide, silicon nitride and boron carbide are poured into 10 times of absolute ethyl alcohols of weight, ultrasonic disperse 2 hours, 600 Rev/min ball-milling treatment 6 hours, removes absolute ethyl alcohol, and drying obtains final product hybrid ceramic powder；
(3) precast body of step (1) is well mixed with the hybrid ceramic powder of step (2), and high temperature in a vacuum furnace Sintering, obtains final product lightweight carbon fibre composite；Wherein, mixed method is to be entered with 500 revs/min of mixing speed in grinder Row blending, sintering temperature is 2200 DEG C, and sintering time is 3 hours.
Embodiment 3：
A kind of lightweight carbon fibre composite, be with carbon fiber (T300 aerospace level, its surface includes 2 μm of matrix carbon) and Quartz fibre precast body is that aluminum oxide (0.5 μm of particle diameter), silicon nitride (2 μm of particle diameter) and carbonization are filled between skeleton, the space of skeleton Boron (0.5 μm of particle diameter)；By percentage to the quality, each component content is：Carbon fiber 35%, quartz fibre 20%, aluminum oxide 20%, Silicon nitride 15%, boron carbide 10%.
Wherein, carbon fiber and quartz fibre precast body are defined three-dimensional, acupuncture and obtain.
A kind of preparation technology of above-mentioned lightweight carbon fibre composite, including step：
(1) carbon fiber and the blended acupuncture of quartz fibre or thin volume are punctured, obtains precast body；Then precast body is existed 20 minutes are incubated under the conditions of 1000 DEG C, so heavy carbon is processed 3 times, obtains final product the precast body that surface covers matrix carbon；
(2) aluminum oxide, silicon nitride and boron carbide are poured into 5 times of absolute ethyl alcohols of weight, ultrasonic disperse 2 hours, 500 Rev/min ball-milling treatment 6 hours, removes absolute ethyl alcohol, and drying obtains final product hybrid ceramic powder；
(3) precast body of step (1) is well mixed with the hybrid ceramic powder of step (2), and high temperature in a vacuum furnace Sintering, obtains final product lightweight carbon fibre composite；Wherein, mixed method is to be entered with 300 revs/min of mixing speed in grinder Row blending, sintering temperature is 2200 DEG C, and sintering time is 2 hours.
Embodiment 4：
A kind of lightweight carbon fibre composite, is with carbon fiber (T700 aerospace level, its surface includes 1.5 μm of matrix carbon) It is that aluminum oxide (2 μm of particle diameter), silicon nitride (0.5 μm of particle diameter) and carbon are filled between skeleton, the space of skeleton with quartz fibre precast body Change boron (2 μm of particle diameter)；By percentage to the quality, each component content is：Carbon fiber 20%, quartz fibre 25%, aluminum oxide 25%, Silicon nitride 15%, boron carbide 15%.
Wherein, carbon fiber and quartz fibre precast body are three-dimensional, and thin volume punctures and obtain.
A kind of preparation technology of above-mentioned lightweight carbon fibre composite, including step：
(1) carbon fiber and the blended acupuncture of quartz fibre or thin volume are punctured, obtains precast body；Then precast body is existed 45 minutes are incubated under the conditions of 950 DEG C, so heavy carbon is processed 2 times, obtains final product the precast body that surface covers matrix carbon；
(2) aluminum oxide, silicon nitride and boron carbide are poured into 10 times of absolute ethyl alcohols of weight, ultrasonic disperse 1 hour, 600 Rev/min ball-milling treatment 5 hours, removes absolute ethyl alcohol, and drying obtains final product hybrid ceramic powder；
(3) precast body of step (1) is well mixed with the hybrid ceramic powder of step (2), and high temperature in a vacuum furnace Sintering, obtains final product lightweight carbon fibre composite；Wherein, mixed method is to be entered with 500 revs/min of mixing speed in grinder Row blending, sintering temperature is 1600 DEG C, and sintering time is 3 hours.
Embodiment 5：
A kind of lightweight carbon fibre composite, be with carbon fiber (T300 aerospace level, its surface includes 2 μm of matrix carbon) and Quartz fibre precast body is that aluminum oxide (1 μm of particle diameter), silicon nitride (1 μm of particle diameter) and boron carbide are filled between skeleton, the space of skeleton (2 μm of particle diameter)；By percentage to the quality, each component content is：Carbon fiber 30%, quartz fibre 25%, aluminum oxide 20%, nitridation Silicon 12%, boron carbide 13%.
Wherein, carbon fiber and quartz fibre precast body are defined three-dimensional, acupuncture and obtain.
A kind of preparation technology of above-mentioned lightweight carbon fibre composite, including step：
(1) carbon fiber and the blended acupuncture of quartz fibre or thin volume are punctured, obtains precast body；Then precast body is existed 30 minutes are incubated under the conditions of 1000 DEG C, so heavy carbon is processed 3 times, obtains final product the precast body that surface covers matrix carbon；
(2) aluminum oxide, silicon nitride and boron carbide are poured into 8 times of absolute ethyl alcohols of weight, ultrasonic disperse 2 hours, 550 Rev/min ball-milling treatment 5 hours, removes absolute ethyl alcohol, and drying obtains final product hybrid ceramic powder；
(3) precast body of step (1) is well mixed with the hybrid ceramic powder of step (2), and high temperature in a vacuum furnace Sintering, obtains final product lightweight carbon fibre composite；Wherein, mixed method is to be entered with 400 revs/min of mixing speed in grinder Row blending, sintering temperature is 2000 DEG C, and sintering time is 2 hours.
Test example
Lightweight carbon fibre composite to embodiment 1~5 carries out performance test, and drainage test material is respectively adopted Density, the stretching of universal testing machine test material is slight, bending strength and compressive strength, and is tested under 2100 DEG C of aerobic environments Mass loss rate (mass loss of unit area in the unit interval), the results are shown in Table 1.
The performance test results of table 1.
As it can be seen from table 1 lightweight carbon fibre composite density of the invention is in 1.5g/cm3Hereinafter, tensile strength , in more than 220MPa, mass loss is only 10 under 2100 DEG C of aerobic environments for more than 180MPa, bending strength and compressive strength-5g/ cm2S magnitudes, have the advantages that lightweight, mechanical property are good and thermal shock resistance is good.
Although above-mentioned be described to specific embodiment of the invention, not to the limit of the scope of the present invention System, on the basis of technical scheme, it is each that those skilled in the art make by need not paying creative work Plant modification or deform still within protection scope of the present invention.

Claims (9)

1. a kind of lightweight carbon fibre composite, it is characterised in that be the skeleton with carbon fiber and quartz fibre precast body as skeleton Space between fill aluminum oxide, silicon nitride and boron carbide；By percentage to the quality, each component content is：Carbon fiber 20~35%, Quartz fibre 10~25%, aluminum oxide 10~25%, silicon nitride 10~15%, boron carbide 10~15%.
2. a kind of lightweight carbon fibre composite according to claim 1, it is characterised in that carbon fiber surface also includes 1.5~2 μm of matrix carbon.
3. a kind of lightweight carbon fibre composite according to claim 1, it is characterised in that the carbon fiber and quartz are fine Dimension precast body is defined three-dimensional or three-dimensional, including acupuncture or thin volume puncture.
4. a kind of lightweight carbon fibre composite according to claim 1, it is characterised in that the carbon fiber be T300 or T700 aerospace level.
5. a kind of lightweight carbon fibre composite according to claim 1, it is characterised in that the aluminum oxide, silicon nitride 0.5~2 μm is with the average grain diameter of boron carbide.
6. the preparation technology of a kind of lightweight carbon fibre composite any one of Claims 1 to 5, it is characterised in that Including step：
(1) carbon fiber and the blended acupuncture of quartz fibre or thin volume are punctured, obtains precast body；
(2) aluminum oxide, silicon nitride and boron carbide are poured into 5~10 times of absolute ethyl alcohols of weight, ultrasonic disperse 1~2 hour, ball Mill treatment 5~6 hours, removes absolute ethyl alcohol, and drying obtains final product hybrid ceramic powder；
(3) precast body of step (1) is well mixed with the hybrid ceramic powder of step (2), and high temperature sintering in a vacuum furnace, Obtain final product lightweight carbon fibre composite；Wherein, sintering temperature is 1600~2200 DEG C, and sintering time is 2~3 hours.
7. preparation technology according to claim 6, it is characterised in that step (1) also includes heavy carbon process step, and being will be pre- Body processed is incubated 20~45 minutes under the conditions of 950~1000 DEG C, is processed as 2~3 times, obtains final product the prefabricated of surface covering matrix carbon Body.
8. preparation technology according to claim 6, it is characterised in that rotational speed of ball-mill in step (2) for 500~600 turns/ Minute.
9. preparation technology according to claim 6, it is characterised in that in step (3) mixed method be in grinder with 300~500 revs/min of mixing speed is blended.
CN201611241906.8A 2016-12-29 2016-12-29 A kind of lightweight carbon fibre composite and its preparation technology Withdrawn CN106830964A (en)

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Cited By (3)

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CN109232009A (en) * 2018-09-12 2019-01-18 江苏奥派交通装备股份有限公司 A kind of preparation process of carbon fibre material
CN114434937A (en) * 2022-03-09 2022-05-06 长沙思云新材料科技有限公司 High-temperature-resistant heat-insulating sandwich composite material with electromagnetic function and preparation method thereof
CN116462525A (en) * 2023-06-19 2023-07-21 中国人民解放军国防科技大学 Continuous carbon fiber reinforced ultrahigh-temperature ceramic matrix composite material and preparation method thereof

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CN101830703A (en) * 2010-04-06 2010-09-15 中南大学 Carbon fiber reinforced boron carbide composite material and preparation method thereof
CN104909792A (en) * 2015-05-27 2015-09-16 航天材料及工艺研究所 Continuous fiber-reinforced zirconium carbide based composite material and preparation method thereof
CN106220213A (en) * 2016-08-01 2016-12-14 湖南九华碳素高科有限公司 A kind of preparation method of carbon/ceramic composite material

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CN101830703A (en) * 2010-04-06 2010-09-15 中南大学 Carbon fiber reinforced boron carbide composite material and preparation method thereof
CN104909792A (en) * 2015-05-27 2015-09-16 航天材料及工艺研究所 Continuous fiber-reinforced zirconium carbide based composite material and preparation method thereof
CN106220213A (en) * 2016-08-01 2016-12-14 湖南九华碳素高科有限公司 A kind of preparation method of carbon/ceramic composite material

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CN109232009A (en) * 2018-09-12 2019-01-18 江苏奥派交通装备股份有限公司 A kind of preparation process of carbon fibre material
CN114434937A (en) * 2022-03-09 2022-05-06 长沙思云新材料科技有限公司 High-temperature-resistant heat-insulating sandwich composite material with electromagnetic function and preparation method thereof
CN116462525A (en) * 2023-06-19 2023-07-21 中国人民解放军国防科技大学 Continuous carbon fiber reinforced ultrahigh-temperature ceramic matrix composite material and preparation method thereof
CN116462525B (en) * 2023-06-19 2023-09-05 中国人民解放军国防科技大学 Continuous carbon fiber reinforced ultrahigh-temperature ceramic matrix composite material and preparation method thereof

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Application publication date: 20170613