CAJ | 학술논문

采用水溶液自由基共聚法制备了腐殖酸-烯丙基磺酸钠接枝共聚物（HAS），并通过FT-IR和XRD对其进行了结构表征．将HAS和传统的萘磺酸甲醛缩合物（SNF）分散剂应用于神木煤的制浆，考察了浆体的表观黏度和静态稳定性．研究表明，HAS的应用性能优于SNF，在HAS用量为0．6wt％时，水煤浆（成浆浓度为63wt％）黏度为392mPa·s，168h的析水率为4．47；测定了HAS和SNF在煤表面的物理化学性质，结果表明，HAS在煤表面呈现明显多层吸附特征，吸附量比SNF大，XPS分析也说明了这一点．HAS能更有效地降低水在煤表面的接触角，这表明HAS对煤具有良好的润湿作用．此外，HAS在煤表面的zeta电位绝对值也比SNF略小．
채용수용액자유기공취법제비료부식산-희병기광산납접지공취물（HAS），병통과FT-IR화XRD대기진행료결구표정．장HAS화전통적내광산갑철축합물（SNF）분산제응용우신목매적제장，고찰료장체적표관점도화정태은정성．연구표명，HAS적응용성능우우SNF，재HAS용량위0．6wt％시，수매장（성장농도위63wt％）점도위392mPa·s，168h적석수솔위4．47；측정료HAS화SNF재매표면적물이화학성질，결과표명，HAS재매표면정현명현다층흡부특정，흡부량비SNF대，XPS분석야설명료저일점．HAS능경유효지강저수재매표면적접촉각，저표명HAS대매구유량호적윤습작용．차외，HAS재매표면적zeta전위절대치야비SNF략소．
A new type of humic acid graft copolymer (HAS) was synthesized by means of wa-ter solution free radical copolymerization ,and characterized by FT-IR and XRD .HAS was applied as a dispersant for the coal-water slurry (CWS) prepared from Chinese Shenmu coal . The application performance investigations show that ,compared with a commercial disper-sant-sulfonated naphthalene-formaldehyde condensate (SNF) ,HAS has better ability in low-ering viscosity and strengthening stability for CWS ,and the slurry (coal content=63 w t%and dispersant concentration=0 .6 wt% ) exhibits 392 mPa · s of apparent viscosity ,while the syneresis ratio remains 4 .74 within 168 hours .The physicochemical property investiga-tions show that ,HAS exhibits the multilayer adsorption model on coal surface ,its adsorp-tion amount is much larger than that of SNF ,Which is proved by XPS examination .Com-pared with SNF ,HAS can more effectively decrease the contact angle of the water on coal surface ,which suggests a better ability in wetting the coal .However ,in the case of HAS , the zeta potential absolute value of coal surface is slight low .