热固性SiC液体前驱体及其快速成型碳纤维/SiC复合材料

Li'na He; Xu Zhang; Mingcun Wang

doi:10.13801/j.cnki.fhclxb.20190715.001

热固性SiC液体前驱体及其快速成型碳纤维/SiC复合材料

Translated title of the contribution: Thermosetting liquid precursor of SiC and fast-manufacturing of carbon fiber/SiC composites

Li'na He
, Xu Zhang
, Mingcun Wang^*

^*Corresponding author for this work

School of Chemistry

Beihang University

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

In this paper, one novel thermosetting liquid precursor for SiC was prepared (hyperbranched polycarbosilane, Tri-ImPCS, with viscosity about 3 000 mPa•s at 25℃), and fast net shaping of carbon fiber/SiC composites (CF/SiC) by high pressure injection was primarily investigated. Liquid epoxy RE1820 (viscosity about 500 mPa•s at 25℃) acts as effective curing agent of Tri-ImPCS, and thermal cure could proceed at room temperature or comparably low heated conditions (<100℃); thermal pyrolysis of thermally cured precursor under atmospheric pressure results into a non-foamed and shape-changeless ceramic monolith. The ceramic yield of Tri-ImPCS under N₂ atmosphere is as high as 74.8% at 900℃ (based on the cured precursor). C and Si elements are uniformly distributed at micro-scale with the atomic ratio of 1.26. Using a joint-process of prepreg molding and high-pressure injection, the fast manufacturing and rapid densification was successfully realized in CF/SiC's processing. The liquid precursor of Tri-ImPCS is an ideal candidate of SiC precursor of SiC matrixed composites.

Translated title of the contribution	Thermosetting liquid precursor of SiC and fast-manufacturing of carbon fiber/SiC composites
Original language	Chinese (Traditional)
Pages (from-to)	626-634
Number of pages	9
Journal	Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica
Volume	37
Issue number	3
DOIs	https://doi.org/10.13801/j.cnki.fhclxb.20190715.001
State	Published - 1 Mar 2020

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title = "热固性SiC液体前驱体及其快速成型碳纤维/SiC复合材料",

abstract = "In this paper, one novel thermosetting liquid precursor for SiC was prepared (hyperbranched polycarbosilane, Tri-ImPCS, with viscosity about 3 000 mPa•s at 25℃), and fast net shaping of carbon fiber/SiC composites (CF/SiC) by high pressure injection was primarily investigated. Liquid epoxy RE1820 (viscosity about 500 mPa•s at 25℃) acts as effective curing agent of Tri-ImPCS, and thermal cure could proceed at room temperature or comparably low heated conditions (<100℃); thermal pyrolysis of thermally cured precursor under atmospheric pressure results into a non-foamed and shape-changeless ceramic monolith. The ceramic yield of Tri-ImPCS under N2 atmosphere is as high as 74.8\% at 900℃ (based on the cured precursor). C and Si elements are uniformly distributed at micro-scale with the atomic ratio of 1.26. Using a joint-process of prepreg molding and high-pressure injection, the fast manufacturing and rapid densification was successfully realized in CF/SiC's processing. The liquid precursor of Tri-ImPCS is an ideal candidate of SiC precursor of SiC matrixed composites.",

keywords = "Ceramization, Fast-manufacturing, SiC precursor, Thermal curablity, Thermal cure",

author = "Li'na He and Xu Zhang and Mingcun Wang",

year = "2020",

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doi = "10.13801/j.cnki.fhclxb.20190715.001",

language = "繁体中文",

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publisher = "Beijing University of Aeronautics and Astronautics (BUAA)",

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T1 - 热固性SiC液体前驱体及其快速成型碳纤维/SiC复合材料

AU - He, Li'na

AU - Zhang, Xu

AU - Wang, Mingcun

PY - 2020/3/1

Y1 - 2020/3/1

N2 - In this paper, one novel thermosetting liquid precursor for SiC was prepared (hyperbranched polycarbosilane, Tri-ImPCS, with viscosity about 3 000 mPa•s at 25℃), and fast net shaping of carbon fiber/SiC composites (CF/SiC) by high pressure injection was primarily investigated. Liquid epoxy RE1820 (viscosity about 500 mPa•s at 25℃) acts as effective curing agent of Tri-ImPCS, and thermal cure could proceed at room temperature or comparably low heated conditions (<100℃); thermal pyrolysis of thermally cured precursor under atmospheric pressure results into a non-foamed and shape-changeless ceramic monolith. The ceramic yield of Tri-ImPCS under N2 atmosphere is as high as 74.8% at 900℃ (based on the cured precursor). C and Si elements are uniformly distributed at micro-scale with the atomic ratio of 1.26. Using a joint-process of prepreg molding and high-pressure injection, the fast manufacturing and rapid densification was successfully realized in CF/SiC's processing. The liquid precursor of Tri-ImPCS is an ideal candidate of SiC precursor of SiC matrixed composites.

AB - In this paper, one novel thermosetting liquid precursor for SiC was prepared (hyperbranched polycarbosilane, Tri-ImPCS, with viscosity about 3 000 mPa•s at 25℃), and fast net shaping of carbon fiber/SiC composites (CF/SiC) by high pressure injection was primarily investigated. Liquid epoxy RE1820 (viscosity about 500 mPa•s at 25℃) acts as effective curing agent of Tri-ImPCS, and thermal cure could proceed at room temperature or comparably low heated conditions (<100℃); thermal pyrolysis of thermally cured precursor under atmospheric pressure results into a non-foamed and shape-changeless ceramic monolith. The ceramic yield of Tri-ImPCS under N2 atmosphere is as high as 74.8% at 900℃ (based on the cured precursor). C and Si elements are uniformly distributed at micro-scale with the atomic ratio of 1.26. Using a joint-process of prepreg molding and high-pressure injection, the fast manufacturing and rapid densification was successfully realized in CF/SiC's processing. The liquid precursor of Tri-ImPCS is an ideal candidate of SiC precursor of SiC matrixed composites.

KW - Ceramization

KW - Fast-manufacturing

KW - SiC precursor

KW - Thermal curablity

KW - Thermal cure

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DO - 10.13801/j.cnki.fhclxb.20190715.001

M3 - 文章

AN - SCOPUS:85083815954

SN - 1000-3851

VL - 37

SP - 626

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JO - Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica

JF - Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica

IS - 3

ER -

热固性SiC液体前驱体及其快速成型碳纤维/SiC复合材料

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