碱木素改性酚醛树脂及其在铝碳耐火材料中的应用  

Lignin Modified Phenolic Resin and Its Application in Alumina Carbon Refractories

作　　者：王富成[1,2] 赵雷[1] 方伟[1] 何漩[1] 梁峰[1] 陈辉[1] 杜星[1] 陈欢[1] 

机构地区：[1]武汉科技大学省部共建耐火材料与冶金国家重点实验室,武汉430081 [2]濮阳濮耐高温材料(集团)股份有限公司,濮阳457100

出　　处：《材料导报》2015年第8期91-94,共4页Materials Reports

基　　金：973计划前期研究项目(2012CB722702)

摘　　要：为提高酚醛树脂结合铝碳砖常温强度并降低其成本,用碱木素替代部分苯酚,以碱木素含量、催化剂量和缩聚反应时间为因素,以合成的碱木素改性酚醛树(LPF)作结合剂的铝碳砖烘干后的常温抗折强度为考核指标,通过正交试验设计分析各因素对合成LPF的影响程度依次为:碱木素含量>催化剂含量>缩聚反应时间。用逐次回归分析预测合成LPF的最佳工艺条件为:碱木素含量10%(质量分数)、催化剂含量2%(质量分数)、缩聚反应时间2.5h。该最佳工艺合成的LPF结合铝碳砖的常温抗折强度达18.2 MPa,比商业酚醛结合铝碳砖常温抗折强度(16.1 MPa)提高13%,其物理性能也较商业酚醛树脂结合铝碳砖优。In order to improve the bonding strength of alumina carbon bricks at room temperature and reduce the cost of the phenolic resin, lignin modified phenolic resin （LPF） was synthesized using soda lignin as a partial re- placement of phenol. Orthogonal experiment was used to optimize the cold modulus of rupture （CMOR） for alumina carbon bricks bonded with LPF based on soda lignin content, sodium hydroxide content and reaction time. The results showed that the factors sequence., soda lignin content ~ sodium hydroxide content ~ reaction time. Using regression analysis to predict the best technology factors for synthesis of LPF are lignin content 10wt%, catalyst content 2wt% and reaction time 2. 5 h. The CMOR of alumina carbon bricks bonded with the best technology factors synthesized LPF is 18. 2 MPa, which is higher than commercial phenolic resin bonded （16.1 MPa）, and the physical properties are better.

关 键 词：碱木素 改性酚醛树脂 铝碳耐火材料 正交试验 回归分析 

分 类 号：TQ050.43[化学工程]