聚丙烯酰胺/硫酸钙晶须复合材料的制备与表征

Study on Preparation and Characterization of PAM/Calcium Sulfate Whisker Composite Materials

以化学石膏为原料,通过水热法制备硫酸钙晶须,加入聚丙烯酰胺对其水热样品进行改性。对样品的粒度和比表面积进行测定,并通过扫描电镜和红外光谱检测对加入聚丙烯酰胺后提高样品抗水溶性能的机理进行了分析。结果表明:化学石膏经过水热工艺发生晶化,聚丙烯酰胺通过絮凝作用对水热产物改性,最终提高了原料水溶保留率。

Using polyacrylamide as modifier, calcium sulfate whisker was prepared with chemical gypsum by hydrothermal synthesis process. Based on the characterizations of composite materials by SEM and FT-IR analysis, the mechanism of adding polyacrylamide to improve water- resistancewere proposed. It is indicated that the improvement mechanism is as follows： the chemical gypsum was crystallized through hydrothermal method. And then the obtained productd were modifed by adding polyacrylamide through flocculation.