<trans-title>Crosslinking of Active Polycarbosilane Initiated by Free Radical and Its Application in the Preparation of SiC Fibers</trans-title>

Yuanjie WANG; Xueliang PEI; Haoyi LI; Xin XU; Liu HE; Zhengren HUANG; Qing HUANG

doi:10.15541/jim20200695

Journal of Inorganic Materials, Volume. 36, Issue 9, 967(2021)

Crosslinking of Active Polycarbosilane Initiated by Free Radical and Its Application in the Preparation of SiC Fibers

Yuanjie WANG1...2, Xueliang PEI1,*, Haoyi LI3, Xin XU2, Liu HE1, Zhengren HUANG1 and Qing HUANG1 |Show fewer author(s)

¹1. Engineering Laboratory of Advanced Energy Materials, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China

²2. Nano Science and Technology Institute, University of Science and Technology of China, Suzhou 215123, China

³3. College of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, Beijing 100029, China

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Figures & Tables(8)

1. Free radical cross-linking mechanism of A-PCS^[28]

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2. FT-IR spectra of A-PCS-0 (a), A-PCS-0.5 (b), A-PCS-1 (c), and A-PCS-2 (d) at different temperatures

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3. Reaction degrees of the acrylate groups of the A-PCS-0, A-PCS-0.5, A-PCS-1, and A-PCS-2 at different temperatures

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4. DSC (a) and TG (b) curves of A-PCS-0, A-PCS-0.5, A-PCS-1, and A-PCS-2

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5. Morphologies of A-PCS-1 fiber after being heated to 250 ℃ or 1100 ℃ at different heating rates

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6. TG curves of PCS, air cured-PCS and A-PCS-1

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7. (a) Morphology of A-PCS-1 fiber after being heated to 1500 ℃; (b) XRD patterns of SiC fiber derived from A-PCS-1

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Table 1. Element composition of the A-PCS-1 and air cured-PCS after different thermal treatments

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Table 1. Element composition of the A-PCS-1 and air cured-PCS after different thermal treatments

Sample	Pyrolysis temperature/℃	Weight percent /%					Chemical formula
Sample	Pyrolysis temperature/℃	Si	C	O	H	Cl	Chemical formula
A-PCS-1	-	41.78	42.60	6.87	8.75	0.22	SiC_2.43O_0.29H_5.98Cl_0.04
	1100	56.44	36.70	6.86	0	0	SiC_1.52O_0.21
	1500	59.59	36.90	3.52	0	0	SiC_1.45O_0.10
Air cured-PCS	-	45.84	39.00	7.86	7.30	0	SiC_1.99O_0.30H_4.47
	1100	58.58	32.50	8.92	0	0	SiC_1.30O_0.27
	1500	65.12	33.00	1.88	0	0	SiC_1.19O_0.05

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Yuanjie WANG, Xueliang PEI, Haoyi LI, Xin XU, Liu HE, Zhengren HUANG, Qing HUANG. Crosslinking of Active Polycarbosilane Initiated by Free Radical and Its Application in the Preparation of SiC Fibers[J]. Journal of Inorganic Materials, 2021, 36(9): 967

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