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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
李黎,王艳莉,詹亮
0
(华东理工大学化学工程国家重点实验室, 上海市多相结构材料化学工程重点实验室, 特种功能高分子材料及相关技术教育部重点实验室, 上海 200237)
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。
关键词:  泡沫炭  酚醛树脂  高软化点沥青  生物挂膜
DOI:10.14135/j.cnki.1006-3080.2017.04.002
投稿时间:2016-12-15
基金项目:国家自然科学基金(51472086,51002051);上海市自然科学基金(12ZR1407200)
Effects of Phenolic Resin on the Foaming Behavior and Biofilm Biomass of High Softening Point Pitch
LI Li,WANG Yan-li,ZHAN Liang
(State Key Laboratory of Chemical Engineering, Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, Key Laboratory for Specially Functional Polymers and Related Technology of Ministry of Education, East China University of Science and Technology, Shanghai 200237, China)
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.
Key words:  carbon foam  phenolic resin  high softening point pitch  biofilm biomass

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