环氧磺化酚醛树脂水煤浆分散剂的合成及应用  

SYNTHESIS OF EPOXY SULFONATED PHENOLIC RESIN AND THE EFFECTS ON COAL-WATER SLURRY

作　　者：尚婷[1] 张光华[1] 强轶[1] 郭锦鸽[1] 徐海龙[1] 

机构地区：[1]陕西科技大学轻化工化学与技术教育部重点实验室,西安硕士生710021

出　　处：《煤炭转化》2013年第1期51-54,共4页Coal Conversion

基　　金：国家自然科学基金重点项目(21176148);陕西省自然科学基金资助项目(2009JZ002);陕西省教育厅产业化培育项目(2010JC03)

摘　　要：以苯酚为原料,通过硫酸磺化与甲醛聚合,再经环氧氯丙烷接枝等反应合成出一种环氧氯丙烷改性磺化酚醛树脂水煤浆分散剂.合成条件为n(苯酚)∶n(浓硫酸)∶n(甲醛)∶n(环氧氯丙烷)=1∶1∶0.7∶1.5,催化剂含量为苯酚质量的0.5%,磺化温度为100℃,聚合温度为65℃.通过静态接触角、流变性及稳定性等测试,研究了分散剂对陕西神华煤的成浆特性,并通过与木素-萘磺酸盐分散剂对比,发现此环氧磺化酚醛树脂分散剂可有效改善煤表面的亲水性,分子中的环氧链能牢固地结合煤表面的疏水基团,并提供了一定的空间位阻效应,有效阻隔了煤粒间的聚集,使煤粒得到均匀分散,起到了降低水煤浆黏度、提高稳定性的作用.ABSTRACT This paper focused on the preparation of a kind of dispersant. As raw material, phenol was sulfonated by sulfuric acid, polymerized by formaldehyde, and then grafted by epoxy chloropropane to get the epichlorohydrin modified sulfonated phenolic resin dispersant used in coal water slurry （CWS）. The best condition of synthesis was n（phenol）： n（sulfurie aeid） ： n （formaldehyde） ： n（epoxy ehloropropane）= 1 ： 1 ： 0.7 ： 1.5. Sulfonation temperature was 100 ℃, polymeric temperature was 65 ℃. The static contact angle, rheology and stability were tested to analyze the interaction of dispersant and the surface of coal particles. The dispersant can improve hydrophilicity of coal surface, epoxy chain of the dispersant can combined with the hydrophobie groups on coal surface, and sulfonic acid groups have a strong hydrophilicity, so the dispersant can prevent coal particles from gathering through steric hindrance effeet to increase the stability of CWS effectively. KEY WORDS sulfonated phenolic resin, epoxy chloropropane, coal-water slurry dispersant

关 键 词：磺化酚醛树脂 环氧氯丙烷 水煤浆分散剂 

分 类 号：TQ423[化学工程] TQ536