CN104402483A - Preparation method of carbon fiber silicon carbide composite material - Google Patents
Preparation method of carbon fiber silicon carbide composite material Download PDFInfo
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- CN104402483A CN104402483A CN201410606714.7A CN201410606714A CN104402483A CN 104402483 A CN104402483 A CN 104402483A CN 201410606714 A CN201410606714 A CN 201410606714A CN 104402483 A CN104402483 A CN 104402483A
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Abstract
The invention relates to a preparation method of a carbon fiber silicon carbide composite material, which comprises the following steps: processing a carbon fiber precast in a graphite furnace, taking propane as carbon source and taking inert gas as a carrier for deposition; performing densification treatment on the precast by a chemical vapor infiltration method; performing pyrolysis and carbon distribution on the above sample in short time and then taking out simultaneously; taking the sample out, taking a PCS precursor solution as dipping liquid, and performing multitime dipping and lytic cycle to obtain the carbon fiber silicon carbide composite material. The method has the advantages of simple process, low cost, and low energy consumption; the prepared carbon fiber silicon carbide composite material has the advantages of excellent high temperature mechanical property, high thermal conductivity and low expansion coefficient.
Description
Technical field
The present invention relates to a kind of composite material and preparation method thereof, particularly relate to a kind of carbon fibre carbonizing silicon composite preparation method.
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).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 that a kind of method is simple, low cost, energy consumption are low, and prepared carbon fibre carbonizing silicon composite has excellent high-temperature mechanical property, high heat conductance and low-expansion carbon fibre carbonizing silicon composite preparation method.
The technical scheme that the present invention solves the problems of the technologies described above is as follows: a kind of carbon fibre carbonizing silicon composite preparation method, comprises the steps:
Being processed in graphite furnace by carbon fabric perform, take propane 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 carbon fibre carbonizing silicon composite.
On the basis of technique scheme, the present invention can also do following improvement.
Further, describedly to be processed in graphite furnace by carbon fabric perform, take propane as carbon source, rare gas element is that carrier carries out being implemented as follows of deposition step:
By volume fraction content be 50% ~ 60% carbon fabric perform in graphite furnace, processing under 1000 ~ 1600 DEG C of conditions, and be incubated 10 ~ 50min, take propane as carbon source, and rare gas element is carrier, deposits under 800 ~ 1200 DEG C of temperature condition.
Further, described above sample is taken out being implemented as follows of step through short period of time pyrocarbon simultaneously:
Above sample is taken out after pyrocarbon 1 ~ 5min under 1600 ~ 2000 DEG C of conditions.
Further, describedly will taking out sample, with PCS precursor solution for steeping fluid, through repeatedly flooding, cracking circulation, obtaining being implemented as follows of carbon fibre carbonizing silicon composite step:
To sample be taken out, with PCS precursor solution for steeping fluid, dipping, cracking 10 ~ 50min under 1000 ~ 1200 DEG C of conditions, and repeatedly circulate, obtain carbon fibre carbonizing silicon composite.
Described PCS softening temperature 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 carbon fibre carbonizing silicon composite has excellent high-temperature mechanical property, high heat conductance and low-expansion coefficient.
Accompanying drawing explanation
Fig. 1 is a kind of carbon fibre carbonizing silicon composite of the present invention preparation method schematic flow sheet.
Embodiment
Be described principle of the present invention and feature below in conjunction with accompanying drawing, example, only for explaining the present invention, is not intended to limit scope of the present invention.
As shown in Figure 1, a kind of carbon fibre carbonizing silicon composite preparation method, comprises the steps:
Being processed in graphite furnace by carbon fabric perform, take propane 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 carbon fibre carbonizing silicon composite.
Embodiment 1:
By volume fraction content be 50% carbon fabric perform in graphite furnace, processing under 1000 DEG C of conditions, and be incubated 10min, take propane as carbon source, and rare gas element is carrier, deposits under 800 DEG C of temperature condition; By chemical vapor infiltration, densification is carried out to precast body; Above sample is taken out after pyrocarbon 1min under 1600 DEG C of conditions; To sample be taken out, with PCS precursor solution for steeping fluid, dipping, cracking 10min under 1000 DEG C of conditions, and repeatedly circulate, obtain carbon fibre carbonizing silicon 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 propane 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 1100 DEG C of conditions, and repeatedly circulate, obtain carbon fibre carbonizing silicon composite.
Embodiment 3:
By volume fraction content be 60% carbon fabric perform in graphite furnace, processing under 1600 DEG C of conditions, and be incubated 50min, take propane as carbon source, and rare gas element is carrier, deposits under 1200 DEG C of temperature condition; By chemical vapor infiltration, densification is carried out to precast body; Above sample is taken out after pyrocarbon 5min under 2000 DEG C of conditions; To sample be taken out, with PCS precursor solution for steeping fluid, dipping, cracking 50min under 1200 DEG C of conditions, and repeatedly circulate, obtain carbon fibre carbonizing silicon 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 (5)
1. a carbon fibre carbonizing silicon composite preparation method, is characterized in that, comprises the steps:
Being processed in graphite furnace by carbon fabric perform, take propane 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 carbon fibre carbonizing silicon composite.
2. a kind of carbon fibre carbonizing silicon composite preparation method according to claim 1, is characterized in that, is describedly processed in graphite furnace by carbon fabric perform, and take propane as carbon source, rare gas element is that carrier carries out being implemented as follows of deposition step:
By volume fraction content be 50% ~ 60% carbon fabric perform in graphite furnace, processing under 1000 ~ 1600 DEG C of conditions, and be incubated 10 ~ 50min, take propane as carbon source, and rare gas element is carrier, deposits under 800 ~ 1200 DEG C of temperature condition.
3. a kind of carbon fibre carbonizing silicon composite preparation method according to claim 1, is characterized in that, described above sample is taken out being implemented as follows of step through short period of time pyrocarbon simultaneously:
Above sample is taken out after pyrocarbon 1 ~ 5min under 1600 ~ 2000 DEG C of conditions.
4. a kind of carbon fibre carbonizing silicon composite preparation method according to claim 1, it is characterized in that, describedly will take out sample, with PCS precursor solution for steeping fluid, through repeatedly dipping, cracking circulation, obtain being implemented as follows of carbon fibre carbonizing silicon composite step:
To sample be taken out, with PCS precursor solution for steeping fluid, dipping, cracking 10 ~ 50min under 1000 ~ 1200 DEG C of conditions, and repeatedly circulate, obtain carbon fibre carbonizing silicon composite.
5. a kind of carbon fibre carbonizing silicon composite preparation method according to claim 4, it is characterized in that, described PCS softening temperature is 180 ~ 200 DEG C, and molecular weight is 1000 ~ 2000.
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| CN201410606714.7A CN104402483A (en) | 2014-10-28 | 2014-10-28 | Preparation method of carbon fiber silicon carbide composite material |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104591764A (en) * | 2014-12-19 | 2015-05-06 | 青岛麦特瑞欧新材料技术有限公司 | Preparation method of silicon carbide reinforced carbon fiber composite materials |
| CN105016759A (en) * | 2015-07-01 | 2015-11-04 | 西北工业大学 | Rapid preparation method for C/SiC composite material |
| CN105218134A (en) * | 2015-08-07 | 2016-01-06 | 同济大学 | Carbon fiber toughened silicon carbide composite material plate and preparation method thereof and application |
| CN106317940A (en) * | 2015-06-30 | 2017-01-11 | 霍尼韦尔国际公司 | Carbon fiber preforms |
| CN107602142A (en) * | 2017-08-09 | 2018-01-19 | 湖北航天技术研究院总体设计所 | Integrated integral composite airvane preparation method |
| CN110066186A (en) * | 2018-01-23 | 2019-07-30 | 航天特种材料及工艺技术研究所 | A kind of C/SiC composite material and preparation method |
| CN112062967A (en) * | 2020-08-05 | 2020-12-11 | 福建立亚化学有限公司 | Preparation method of polycarbosilane ceramic precursor material |
-
2014
- 2014-10-28 CN CN201410606714.7A patent/CN104402483A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104591764A (en) * | 2014-12-19 | 2015-05-06 | 青岛麦特瑞欧新材料技术有限公司 | Preparation method of silicon carbide reinforced carbon fiber composite materials |
| 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 |
| CN105016759A (en) * | 2015-07-01 | 2015-11-04 | 西北工业大学 | Rapid preparation method for C/SiC composite material |
| CN105218134A (en) * | 2015-08-07 | 2016-01-06 | 同济大学 | Carbon fiber toughened silicon carbide composite material plate and preparation method thereof and application |
| CN105218134B (en) * | 2015-08-07 | 2017-10-24 | 同济大学 | Carbon fiber toughened silicon carbide composite material plate and preparation method and application |
| CN107602142A (en) * | 2017-08-09 | 2018-01-19 | 湖北航天技术研究院总体设计所 | Integrated integral composite airvane preparation method |
| CN107602142B (en) * | 2017-08-09 | 2020-01-03 | 湖北航天技术研究院总体设计所 | Preparation method of integrated integral composite material air rudder |
| CN110066186A (en) * | 2018-01-23 | 2019-07-30 | 航天特种材料及工艺技术研究所 | A kind of C/SiC composite material and preparation method |
| CN110066186B (en) * | 2018-01-23 | 2021-11-30 | 航天特种材料及工艺技术研究所 | C/SiC composite material and preparation method thereof |
| CN112062967A (en) * | 2020-08-05 | 2020-12-11 | 福建立亚化学有限公司 | Preparation method of polycarbosilane ceramic precursor material |
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