微波辐射制备缩合磺化环己酮-甲醛减水剂及其性

关键字：微波,辐射,制备,缩合,磺化,环己,酮,甲醛,减,

（广西建设职业技术学院，广西 南宁  530007）
 

    摘要：采用微波辐射的方法，以甲醛、环己酮和无水亚硫酸钠为原料制备缩合磺化环己酮-甲醛高效减水剂（CFS），通过正交试验得到最优合成条件。合成的CFS在掺量为0.5%时，水泥净浆流动度可达225 mm以上。微波辐射缩合时间仅为水浴加热的1/6，显示了其清洁、高效、耗能低、污染少等特点。结合FTIR、XRD和SEM分析，进一步研究了CFS高效减水剂的主要分子结构及对水泥水化产物生成和微观形貌的影响。

    关键词：微波辐射；磺化环己酮-甲醛缩合物；减水剂

    中图分类号：TU528.042+.2        文献标识码：A        文章编号：1001-702X（2018）06-0078-05

 

Study on condensation of CFS superplasticizer under microwave irradiation and its performance

　FU Xiyao，XIE Xiongmin

（Guangxi Polytechnic of Construction，Nanning 530007，China）

   Abstract：The Sulfonated Cyclohexanone-Formaldehyde（CFS） superplasticizer was synthesized with formaldehyde，cyclohexanone

and anhydrous sodium sulfite as raw material under microwave-irradiation conditions. The optimum synthesis conditions were obtained by orthogonal experiments. When 0.5% CFS was added，the fluidity of cement paste was above 225 mm meanwhile the time of synthesis under microwave irradiation was shortened，which is only one sixth of the water bath heating condition. The synthesis shows its clean，high efficiency，low energy consumption，less pollution，etc. Combined with the analysis results of FTIR，XRD and SEM，the molecular structure and effects of CFS superplasticizer on development and morphology of cement hydration products were investigated.

    Key words：microwave irradiation，CFS condensation compound，water reducing agent