【摘要】 包混工艺是一种应用前景广泛的制备多孔炭/碳化物材料的工艺,包混粉体酚醛树脂含量可以有效地控制其多孔制品的成分和性能。本工作采用正交实验法研究了包混粉体中酚醛树脂含量与工艺参数(成分配比、热处理温度、热处理时间、老化处理温度、老化处理时间)之间的关系。结果表明,原料中酚醛树脂与硅粉质量比对包混粉体中酚醛树脂含量的影响最大。包混粉体中酚醛树脂的含量随着原料中酚醛树脂与硅粉质量比的增加而增加。当原料中酚醛树脂与硅粉的质量比为1∶1,在45°C热处理时间120min,在45°C老化处理90min时,酚醛树脂能更有效、更均匀地包覆在硅粉表面。更多还原

【Abstract】 Coat mix(CM) process is a promising way due to its simplicity,low synthesis temperature,efficiency and controllability in terms of producing porous carbon and carbide materials.Because the Phenolic Resin Content(PRC) of CM powder can effectively control the composition and performance of the fabricated materials,increasing attention should be given to its preparation.Orthogonal test analysis was used to investigate the relationships between the PRC and technological parameters(Mass Ratio of PR and Silicon in raw material(MRPRS),heat treatment temperature,heat treatment time,aging temperature and aging time).Results indicate that MRPRS had remarkable effect on PRC of CM powder.PRC of CM powder increased as MRPRS increased.The optimum values of the technological parameters are as follows: MPPRS 1∶ 1,Heat treatment temperature 45 °C,heat treatment time 120 minutes,aging treatment temperature 45°C and aging treatment time 90 minutes.更多还原