CN104591764A - Preparation method of silicon carbide reinforced carbon fiber composite materials - Google Patents
Preparation method of silicon carbide reinforced carbon fiber composite materials Download PDFInfo
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- CN104591764A CN104591764A CN201410802182.4A CN201410802182A CN104591764A CN 104591764 A CN104591764 A CN 104591764A CN 201410802182 A CN201410802182 A CN 201410802182A CN 104591764 A CN104591764 A CN 104591764A
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Abstract
The invention relates to a preparation method of silicon carbide reinforced carbon fiber composite materials. The preparation method comprises the following steps: processing a carbon fiber prefabricated part in a graphite furnace; performing sedimentation by using butane as a carbon source and inert gas as a carrier; performing densifying treatment on the prefabricated part by means of chemical vapor infiltration; performing sedimentation on samples by using pyrolytic carbon in short time and simultaneously taking out; taking out the samples and steeping for many times and performing lytic cycle by using PCS precursor solutions as steeping solutions to obtain the silicon carbide reinforced carbon fiber composite materials. The method is simple, low in cost and low in energy consumption; the silicon carbide reinforced carbon fiber composite materials are excellent in high-temperature mechanical performance, high heat conduction rate and low expansion coefficient.
Description
Technical field
The invention belongs to technical field of composite preparation, particularly relate to a kind of preparation method of SiC reinforcement carbon-fibre composite.
Background technology
The method preparing C/C-SiC matrix material conventional has chemical vapor infiltration (CVI), precursor pyrolysis and hot pressing (PIP), " chemical vapor infiltration+precursor pyrolysis and hot pressing " hybrid technique (CVI+PIP), reaction melt method of impregnation (RMI) etc.Precursor pyrolysis and hot pressing (PIP) is also known as polymer impregnation pyrolysis method, be the features such as formability, mobility, workability and the structure designability utilizing organic polymer good, make precursor at high temperature cracking and be converted into a kind of processing method of inorganic ceramic matrix.
Adopt PIP legal system for C/C-SiC matrix material, conventional Polycarbosilane (PCS) is as ceramic precursor at present.By SiC modified low-density C/C matrix material, a series of material performance index such as mechanical strength, modulus, thermal conductivity of matrix material can be regulated in certain scope.
Summary of the invention
Technical problem to be solved by this invention is to provide the carbon fibre carbonizing silicon composite preparation method that a kind of method is simple, low cost, energy consumption are low, and the SiC reinforcement carbon-fibre composite prepared by the method has excellent high-temperature mechanical property, high heat conductance and low-expansion coefficient.
The technical scheme that the present invention solves the problems of the technologies described above is as follows: a kind of preparation method of SiC reinforcement carbon-fibre composite, comprise the steps: to be that 52% ~ 58% carbon fabric perform is in graphite furnace by volume fraction content, process under 1100 ~ 1500 DEG C of conditions, and be incubated 20 ~ 40min, take butane as carbon source, rare gas element is carrier, deposits under 900 ~ 1100 DEG C of temperature condition; By chemical vapor infiltration, densification is carried out to precast body; Above sample is taken out after pyrocarbon 2 ~ 4min under 1700 ~ 1900 DEG C of conditions; By the sample taken out, with PCS precursor solution for steeping fluid, dipping, cracking 15 ~ 45min under 900 ~ 1100 DEG C of conditions, and repeatedly circulate, obtain SiC reinforcement carbon-fibre composite.
Wherein, the softening temperature of described PCS is 180 ~ 200 DEG C, and molecular weight is 1000 ~ 2000.
The invention has the beneficial effects as follows: method is simple, low cost, energy consumption are low, and prepared SiC reinforcement carbon-fibre composite has excellent high-temperature mechanical property, high heat conductance and low-expansion coefficient.
Embodiment
Be described principle of the present invention and feature below, example, only for explaining the present invention, is not intended to limit scope of the present invention.
A preparation method for SiC reinforcement carbon-fibre composite, comprises the steps:
Being processed in graphite furnace by carbon fabric perform, take butane as carbon source, and rare gas element is that carrier deposits;
By chemical vapor infiltration, densification is carried out to precast body;
Above sample is taken out through short period of time pyrocarbon simultaneously;
To sample be taken out, with PCS precursor solution for steeping fluid, through repeatedly dipping, cracking circulation, obtain SiC reinforcement carbon-fibre composite.
Embodiment 1:
By volume fraction content be 52% carbon fabric perform in graphite furnace, processing under 1100 DEG C of conditions, and be incubated 20min, take butane as carbon source, and rare gas element is carrier, deposits under 900 DEG C of temperature condition; By chemical vapor infiltration, densification is carried out to precast body; Above sample is taken out after pyrocarbon 2min under 1700 DEG C of conditions; To sample be taken out, with PCS precursor solution for steeping fluid, dipping, cracking 15min under 900 DEG C of conditions, and repeatedly circulate, obtain SiC reinforcement carbon-fibre composite.
Embodiment 2:
By volume fraction content be 55% carbon fabric perform in graphite furnace, processing under 1400 DEG C of conditions, and be incubated 30min, take butane as carbon source, and rare gas element is carrier, deposits under 1000 DEG C of temperature condition; By chemical vapor infiltration, densification is carried out to precast body; Above sample is taken out after pyrocarbon 3min under 1800 DEG C of conditions; To sample be taken out, with PCS precursor solution for steeping fluid, dipping, cracking 30min under 1000 DEG C of conditions, and repeatedly circulate, obtain SiC reinforcement carbon-fibre composite.
Embodiment 3:
By volume fraction content be 58% carbon fabric perform in graphite furnace, processing under 1500 DEG C of conditions, and be incubated 40min, take butane as carbon source, and rare gas element is carrier, deposits under 1100 DEG C of temperature condition; By chemical vapor infiltration, densification is carried out to precast body; Above sample is taken out after pyrocarbon 4min under 1900 DEG C of conditions; To sample be taken out, with PCS precursor solution for steeping fluid, dipping, cracking 45min under 1100 DEG C of conditions, and repeatedly circulate, obtain SiC reinforcement carbon-fibre composite.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (2)
1. a preparation method for carbon fibre carbonizing silicon composite, is characterized in that, comprises the steps:
By volume fraction content be 52% ~ 58% carbon fabric perform in graphite furnace, processing under 1100 ~ 1500 DEG C of conditions, and be incubated 20 ~ 40min, take butane as carbon source, and rare gas element is carrier, deposits under 900 ~ 1100 DEG C of temperature condition;
By chemical vapor infiltration, densification is carried out to precast body;
Above sample is taken out after pyrocarbon 2 ~ 4min under 1700 ~ 1900 DEG C of conditions;
By the sample taken out, with PCS precursor solution for steeping fluid, dipping, cracking 15 ~ 45min under 900 ~ 1100 DEG C of conditions, and repeatedly circulate, obtain carbon fibre carbonizing silicon composite.
2. a kind of carbon fibre carbonizing silicon composite preparation method according to claim 1, it is characterized in that, the softening temperature of described PCS is 180 ~ 200 DEG C, and molecular weight is 1000 ~ 2000.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410802182.4A CN104591764A (en) | 2014-12-19 | 2014-12-19 | Preparation method of silicon carbide reinforced carbon fiber composite materials |
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| CN201410802182.4A CN104591764A (en) | 2014-12-19 | 2014-12-19 | Preparation method of silicon carbide reinforced carbon fiber composite materials |
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| CN104591764A true CN104591764A (en) | 2015-05-06 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105948775A (en) * | 2016-04-27 | 2016-09-21 | 航天材料及工艺研究所 | Preparation method of high-temperature-resistant and oxidation-resistant lightweight carbon/carbon thermal insulation material |
| CN106317940A (en) * | 2015-06-30 | 2017-01-11 | 霍尼韦尔国际公司 | Carbon fiber preforms |
| CN110803932A (en) * | 2019-11-26 | 2020-02-18 | 航天特种材料及工艺技术研究所 | Preparation method of graphene-doped fiber toughened silicon carbide composite material |
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| EP2543650A1 (en) * | 2011-07-07 | 2013-01-09 | Korea Institute of Energy Research | Method for manufacturing high-density fiber reinforced ceramic composite materials |
| CN103482980A (en) * | 2013-09-02 | 2014-01-01 | 湖北三江航天江北机械工程有限公司 | C/SiC composite material and preparation method of same |
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| CN104402483A (en) * | 2014-10-28 | 2015-03-11 | 重庆富地宝科技有限责任公司 | Preparation method of carbon fiber silicon carbide composite material |
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Patent Citations (5)
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| CN101224988A (en) * | 2008-01-29 | 2008-07-23 | 中国人民解放军国防科学技术大学 | Low-temperature preparation method of C/SiC ceramic matrix composite material |
| EP2543650A1 (en) * | 2011-07-07 | 2013-01-09 | Korea Institute of Energy Research | Method for manufacturing high-density fiber reinforced ceramic composite materials |
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| CN103922777A (en) * | 2014-04-09 | 2014-07-16 | 上海大学 | Method for preparing carbon/carbon-silicon carbide composite material for bearings |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106317940A (en) * | 2015-06-30 | 2017-01-11 | 霍尼韦尔国际公司 | Carbon fiber preforms |
| CN106317940B (en) * | 2015-06-30 | 2022-02-11 | 霍尼韦尔国际公司 | Carbon fiber preform |
| CN105948775A (en) * | 2016-04-27 | 2016-09-21 | 航天材料及工艺研究所 | Preparation method of high-temperature-resistant and oxidation-resistant lightweight carbon/carbon thermal insulation material |
| CN105948775B (en) * | 2016-04-27 | 2018-11-23 | 航天材料及工艺研究所 | A kind of preparation method of fire-resistant oxidation resistant type lightweight carbon/carbon heat-barrier material |
| CN110803932A (en) * | 2019-11-26 | 2020-02-18 | 航天特种材料及工艺技术研究所 | Preparation method of graphene-doped fiber toughened silicon carbide composite material |
| CN110803932B (en) * | 2019-11-26 | 2022-02-01 | 航天特种材料及工艺技术研究所 | Preparation method of graphene-doped fiber toughened silicon carbide composite material |
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