酚醛树脂对高软化点沥青的发泡行为及生物挂膜性能的影响

Effects of Phenolic Resin on the Foaming Behavior and Biofilm Biomass of High Softening Point Pitch

摘要: 以高软化点沥青为原料，采用自发泡法制备泡沫炭，将其用作生物污水处理固菌载体材料，并通过添加适量的酚醛树脂以提高泡沫炭的开孔率，进而提高其生物挂膜量。研究结果表明：当在高软化点沥青中添加酚醛树脂的质量分数为30%时，所制泡沫炭的开孔率高达100%，生物挂膜量（质量分数）达5.4%；当酚醛树脂的添加质量分数为40%时，所制泡沫炭的压缩强度达5.2 MPa，但其开孔率较低，孔结构的均一性较差。

Abstract: Carbon foams were synthesized by self-foaming method derived from high softening point pitch as packing media in biological aerated filter system.To achieve a high biofilm biomass,phenolic resin was added into the high softening point pitch to improve the open porosity of carbon foam.When the additive mass fraction of phenolic resin is 30%,the open porosity and mass fraction of biofilm biomass of the resultant carbon foam are 100% and 5.4%,respectively.When the additive mass fraction of phenolic resin is 40%,the carbon foam has a high compressive strength of 5.2 MPa accompanied with a low open porosity and a poor uniformity of pore structure.