CAJ | 학술논문

以丙酮、甲醛及亚硫酸钠为原料，采用磺化缩聚法，通过控制缩合时间和温度合成了一系列具有不同分子量的磺化丙酮‐甲醛（SAF）水煤浆分散剂，并对其分子结构进行了表征，证明了它是一个含有磺酸基和羟基亲水基团的脂肪族柔性链高分子。同时研究了它们对彬长煤的吸附和水煤浆流变性能的影响，并与萘系进行了对比。结果表明，相对分子量适中（M w＝38541）的S A F‐2对水煤浆的分散降黏性最好，其分散性和稳定性均优于萘系分散剂；通过吸附等温线的测定，得出SAF在彬长煤上呈Langmuir单分子层吸附，且SAF分子量越小，其吸附能力K越大，吸附量也越大；用Herschel‐Bulkley模型对浆体流变曲线进行拟合，发现不同分子量的SAF水煤浆体都呈现“剪切变稀”的流变特性，为假塑性流体，且分子量适中的SAF‐2流动指数最大，吸附量与水煤浆流动性密切相关。
이병동、갑철급아류산납위원료，채용광화축취법，통과공제축합시간화온도합성료일계렬구유불동분자량적광화병동‐갑철（SAF）수매장분산제，병대기분자결구진행료표정，증명료타시일개함유광산기화간기친수기단적지방족유성련고분자。동시연구료타문대빈장매적흡부화수매장류변성능적영향，병여내계진행료대비。결과표명，상대분자량괄중（M w＝38541）적S A F‐2대수매장적분산강점성최호，기분산성화은정성균우우내계분산제；통과흡부등온선적측정，득출SAF재빈장매상정Langmuir단분자층흡부，차SAF분자량월소，기흡부능력K월대，흡부량야월대；용Herschel‐Bulkley모형대장체류변곡선진행의합，발현불동분자량적SAF수매장체도정현“전절변희”적류변특성，위가소성류체，차분자량괄중적SAF‐2류동지수최대，흡부량여수매장류동성밀절상관。
A water‐soluble aliphatic polycondensate ,sulfonated acetone‐formaldehyde (SAF) was prepared by sulfonation and polycondensation reations using acetone ,formaldehyde and sodium sulfite as raw material .Characterized its structure ,it was a containing sulfonic acid groups and hydroxyl hydrophilic aliphatic flexible chain polymer .The effects of molecular weight of SAF on its adsorption behaviors and rheological property in CWS were investiga‐ted .The results show that ,the relative molecular weight is moderate (Mw=38 541) ,SAF‐2 is best for reducing viscosity on the coal‐water slurvy ,dispersibility and stability are better than naphthalene dispersants .Adsorption results show that all the adsorption isotherms of SAF and NSF on coal surface are belonging to Langmuir monolayer adsorption .With the in‐crease of molecular weight ,the adsorption amounts on coal surface decrease .The rheological properties of different SAF were fitted by using the Herschel‐Bulkley model .The results showed all rheological properties of CWS that added different molecular weight SAF were the shear thinned and pseudoplastic fluids .T he adsorption capacity w as closely related to the liquidity of CWS .