聚羧酸酯醚复配减水剂母液的制备及与水泥相容

关键字：聚羧酸酯醚,复配减水剂,母液,制备,水泥相容

　　（1.河套学院 理学系，内蒙古 巴彦淖尔  015000；2.河套学院 农学系，内蒙古 巴彦淖尔  015000；
3.内蒙古大学 化学化工学院，内蒙古 呼和浩特  010000）

 
 
    摘要：通过复配技术将自制的聚酯型（PS-1）和聚醚型（PS-2）减水剂母液进行复配，系统研究了PS-1与PS-2的复配比例对不同类型水泥相容性的影响。利用傅立叶变换红外光谱仪（FTIR）对PS-1和PS-2的分子结构进行了表征，通过X射线衍射（XRD）和热重（TG-DTG）研究了掺复配减水剂硬化水泥石的微观结构。结果表明，自制减水剂链段中含有羧基、氨基、磺酸基、羟基等基团，当复配比例为m（PS-1）∶m（PS-2）＝3∶2时，对不同类型水泥均有较好的相容性，可延缓1 d内水泥水化。
    关键词：聚羧酸减水剂；聚酯型；聚醚型；复配；相容性
    中图分类号：TU528.042+.2        文献标识码：A        文章编号：1001-702X（2018）02-0042-05
 

Preparation of polyester-type and polyether-type composite cement water reducing agent compound and
the study on the compatibility of cement
WU Fenglong1，SONG Jin2，3，LU Yulun1
1.Department of Science，Hetao College，Bayannur 015000，China；
2.Department of Agriculture，Hetao College，Bayannur 015000，China；
3.College of Chemistry and Chemical Engineering，Inner Mongolia University，Hohhot 010000，China）

    Abstract：The compound water reducing agent was synthesized using home-made polyester type（PS-1） and polyether type（PS-2） as raw material through mutual infiltration technique. The influence of mix ratio of PS-1 and PS-2 on the compatibility of cement with different kinds was systematically researched. The molecular structures of two kinds of superplasticizer liquid were characterized and analyzed by Fourier-transform infrared spectroscopy（FTIR）. The microstructure of hardened cement paste mixing water reducing agent were analyzed by x-ray diffraction（XRD） and thermal gravity analysis（TG-DTG）. The results show that the composite water reducing agent chain segment containing ester base，amino sulfonic acid， sulfonic acid group，hydroxyl and other functional groups. When the mix ratio of PS-1 to PS-2 is 3∶2，there are good compatibility for all types of cement. Besides，the compound water reducing agent can delay the cement hydration within 1 d.
    Key words：polycarboxylate water reducing agent，polyester-type，polyether-type，compound，compatibility