Method for preparing silicone carbide fibre by thermochemical crosslinking and crosslinking apparatus therefor

热化学交联制备碳化硅纤维的方法及交联装置

Abstract

A thermo-chemical cross-linking preparation method of silicone carbide fiber and a cross-linking device relates to a silicone carbide fiber, in particular to a method that the thermo-chemical cross-linking of organometallic compounds is used for the preparation of silicone carbide fiber and the cross-linking device of the method, which provides a thermo-chemical cross-linking preparation method of silicone carbide fiber and a cross-linking device of the method and provided with a quartz glass tube, an inlet tube, an outlet tube, a sealing steel sleeve, a gas flow control valve, a heating coil and a quartz boat. The heating coil is arranged outside of the quartz glass tube. The inlet and outlet tubes are respectively linked on both ends of the quartz glass tube through the sealing steel sleeve, and the quartz is disposed inside the quartz glass tube. The PCS and a cross-linking agent are dissolved in the trtrahydrofuran, and the slurry is produced. The slurry is in ageing and with the dry-spinning, thus the precursor fiber is produced. The precursor disposed into the quartz is then disposed into the cross-linking device for the thermo-chemical cross-linking. The PCS cross-linking fiber is obtained, which is then disposed into a high-temperature furnace for pyrolysis and sintering. Therefore, the silicon carbide fiber is produced.
热化学交联制备碳化硅纤维的方法及交联装置,涉及一种碳化硅纤维,尤其是涉及一种利用有机金属化合物热化学交联制备碳化硅纤维的方法及其交联装置。提供一种热化学交联制备碳化硅纤维的方法及其交联装置。设有石英玻璃管、进气管、出气管、密封钢套、气体流量控制阀、加热线圈和石英舟,加热线圈设于石英玻璃管外,进气管和出气管分别通过密封钢套连接于石英玻璃管两端,石英舟置于石英玻璃管内。将PCS和交联剂溶解在四氢呋喃中,制得浆料;将浆料陈化,干法纺丝,制成原丝;将原丝放入石英舟,再放入交联装置热化学交联,获得PCS交联纤维,再放入高温炉热解和烧成,制得碳化硅纤维。

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Cited By (13)

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