作　　者： ; ; ; ; ;

机构地区： 贺州学院

出　　处： 《无机盐工业》 2013年第4期18-21,共4页

摘　　要： 采用单因素法考察了改性剂聚(丙烯酸丁酯-反丁烯二酸)[P(BA-FA)]对重质碳酸钙(重钙)微粒进行表面改性的工艺条件,重点考察了P(BA-FA)改性剂中偶氮二异丁腈(AIBN)用量和叔十二碳硫醇(TDDM)用量对改性效果的影响,并测定改性前后重钙微粒的吸油值、黏度、沉降体积。通过SEM电镜观察发现改性剂对重钙的包覆效果明显,改性后的重钙微粒吸油值、黏度和沉降体积均比改性前有明显降低。较佳的改性条件为每5 g重钙微粒AIBN用量为0.047 6 g,TDDM用量为0.01 mL,在此条件下沉降体积为2.921 mL/g,吸油值为0.359 0 mL/g,黏度为33 mPa.s。 The technological conditions for surface modification of heavy calcium carbonate particles with poly （butyl acrylate- fumaric acid） [P （BA-FA）]as modifier were investigated by single-factor method.lnfluences of the dosages of AIBNand TDDM in P （BA-FA） on the modification effect were studied emphatically.The oil absorption value, viscosity, and sedimenta- tion volume of heavy calcium carbonate particles before and after the modification were determined.SEM results showed that, the modifier had a good doping effect on the heavy calcium carbonate,and the oil absorption value,viscosity,and sedimentation volume of the modified particles were all significantly reduced than those that unmodified.The optimum modification conditions were：AIBN amount was 0.047 6 g per 5 g heavy calcium carbonate,and the amount of TDDM was 0.01 mL.Under these conditions,the settlement volume,oil absorption value,and viscosity were 2.921 mL/g,0.359 0 mL/g, and 33 mPa s, respectively.

关 键 词： 重钙微粒 表面改性 单因素

领　　域： [化学工程]