| 초록 |
Curing is an essential step in the preparation of a silicon carbide (SiC) fiber which was to prevented the fiber melting during the carbonize phase. The properties of the SiC fiber are affected greatly by the curing conditions. In this study, polycarbosilane (PCS) was used as a precursor for SiC, which was fabricated by a meltspinning method. The PCS fiber was cured by an electron beam (E-beam) irradiation in an argon atmosphere. The E-beam was generated under the condition of a 1.14 MeV acceleration voltage, a 4 mA current, and exposed to an E-beam in a dose range of 2, 3, 5, and 10 MGy in an argon atmosphere. The effects of an E-beam irradiation dose on the curing properties of the PCS fiber were characterized by a scanning electron microscope, a Fourier transform infrared spectrometry, and a thermogravimetric analysis. |
