Crosslinking of Active Polycarbosilane Initiated by Free Radical and Its Application in the Preparation of SiC Fibers
文献类型：期刊论文
| 作者 | Wang Yuanjie; Pei Xueliang; Li Haoyi; Xu Xin; He Liu; Huang Zhengren; Huang Qing |
| 刊名 | JOURNAL OF INORGANIC MATERIALS
 |
| 出版日期 | 2021 |
| 卷号 | 36期号:9页码:967-973 |
| 关键词 | FABRICATION MAT |
| 英文摘要 | In the preparation of SiC ceramic fibers based on precursor polycarbosilane, the crosslinking treatment is a neccessary process to maintain the fiber morphology and improve the ceramic yield. In this study, polycarbosilane containing acrylate group (A-PCS) was used as raw material, and the thermal free radical initiator was introduced to realize the crosslinking formation during the pyrolysis process. FT-IR and DSC were used to analyze the influence of initiator content on crosslinking degree, crosslinking rate and thermal degradation rate of A-PCS; TG, elemental analysis and XRD were used to analyze the evolution of ceramic yield, composition and amorphous change with temperature. The introduction of free radical thermal initiator can improve the crosslinking rate of acrylate group in A-PCS and reduce the thermal weight loss at the crosslinking stage. When free radical thermal initiator (weight percent 1%) was added, the acrylate group was consumed completely after heating to 250 degrees C at 5 degrees C/min and the ceramic yield at 1500. was 69.5%. A-PCS fibers with diameter of 2-5 mu m were obtained by electrospinning process, and then transformed into SiC fibers by subsequent pyrolysis. The morphology of the SiC fibers was regular with no fusion phenomenon. In addition, with the increase of pyrolysis temperature, the amorphous SiC fiber can be transformed into crystalline structure. |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/21481]  |
| 专题 | 2021专题_期刊论文 |
| 作者单位 | Pei, XL (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Engn Lab Adv Energy Mat, Ningbo 315201, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Wang Yuanjie,Pei Xueliang,Li Haoyi,et al. 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):967-973. |
| APA | Wang Yuanjie.,Pei Xueliang.,Li Haoyi.,Xu Xin.,He Liu.,...&Huang Qing.(2021).Crosslinking of Active Polycarbosilane Initiated by Free Radical and Its Application in the Preparation of SiC Fibers.JOURNAL OF INORGANIC MATERIALS,36(9),967-973. |
| MLA | Wang Yuanjie,et al."Crosslinking of Active Polycarbosilane Initiated by Free Radical and Its Application in the Preparation of SiC Fibers".JOURNAL OF INORGANIC MATERIALS 36.9(2021):967-973. |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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