酚醛树脂力化学法改性神府煤粉的性能与应用 - -

在神府煤粉中加入少量线型酚醛树脂在行星球磨上进行混合球磨,利用球磨过程中的力化学作用对煤粉进行表面改性,用傅立叶变换红外光谱、热重分析仪和激光粒度分布仪等对改性后煤粉进行了论证。热重分析表明改性煤粉的热稳定性提高;红外分析和粒度分析的结果变化不大。测定改性煤粉PF的最大接枝率和转化率分别为4.03%和80.60%。改性神府煤粉50%替代碳黑填充丁腈橡胶的性能较好。 Grinding the coal powder mixed with a few linetype Phenol-formaldehyde resin,the surface of the coal powder was modified by the mechano-chemistry effect during ball milling.The properties of modified coal powder were studied by FT-IR,TGA,laser sedimentograph,etc.The TG data indicated that the thermal stability was improved;and the analysis of FT-IR and particle size presented little change.The maximum ratio of grafting PF on coal powder and conversion was 4.03% and 80.60% separately.When fifty percent of the carbon black was substituted by modified coal powder,the filled NBR can demonstrate good performance