乳液法制备中间相炭微球的研究

乳液法制备中间相炭微球的研究

    摘要
  • 摘要: 为制备高性能中间相炭微球（Mesocarbon Microbeads，简称MCMB），选用三种不同中间相含量的石油渣油沥青为原料（中间相体积含量：PP1 85 %，PP2 90%，PP3 100%），采用乳液法制备中间相沥青微球（Mesophase Pitch Microbeads，简称MPMB），再经预氧化和炭化处理，制得圆整度好、收率高、球径分布窄的中间相炭微球。利用扫描电子显微镜（SEM）考察了MPMB的微观形貌，同时还利用激光粒度分析仪测定了MPMB的粒度分布。研究了乳液法制备MPMB的影响因素，研究结果表明：（1）耐高温硅油适宜作为乳液法的导热分散介质；（2）不同中间相含量的沥青制备微球时有其适宜的处理温度和时间（PP1：320℃，30min；PP2：330℃，30min；PP3：355℃，30min），且制得的微球收率（收率：PP1 

    Abstract: Abstract: High performance Meso-carbon Microbeads(MCMB) with regular and perfect shape, high yields and narrow size distributions were obtained by oxidation and carbonization of Mesophase Pitch Microbeads (MPMB) prepared by emulsifying mesophase pitch particles from heavy petroleum residual oil, whose anisotropic contents are respectively 85, 90, and 100% for samples PP1, PP2 and PP3. Processing conditions, which affected the preparation of MPMB by the emulsion method, were investigated. Results indicate that, (1) Silicone oil is a suitable dispersant for preparing MPMB; (2) The pitches with different anisotropic contents have different optimum treatment temperatures and times (PP1: 320℃, 30min; PP2: 330℃, 30min, PP3: 355℃, 30min), meanwhile the yields and morphologies of the resultant microbeads are also different (yields: PP1 

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