论文部分内容阅读
用丙烯酸-高岭土采用静态水溶液法制备复合吸水性树脂(简称复合树脂),考察了高岭土含量、聚合温度、丙烯酸单体的含量、丙烯酸中和度、引发剂和交联剂的用量对复合树脂吸水量的影响。实验结果表明,复合树脂的最佳制备条件为:聚合温度为70℃,丙烯酸单体的质量分数为35%,丙烯酸中和度为70%,引发剂占单体的质量分数为0.2%,交联剂占单体的质量分数为0.02%,高岭土占单体的质量分数为12%;在此条件下制备的复合树脂对蒸馏水的吸水量为920g/g,傅里叶变换红外光谱和扫描电镜表征结果表明,复合树脂是一种典型的海/岛结构,丙烯酸和高岭土之间存在共聚反应。
The composite water-absorbent resin (referred to as composite resin) was prepared with acrylic acid-kaolin by static aqueous solution. The effects of kaolin content, polymerization temperature, acrylic acid monomer content, acrylic acid neutralization degree, initiator and cross- The impact of volume. The experimental results show that the optimal conditions for the preparation of the composite resin are as follows: the polymerization temperature is 70 ℃, the mass fraction of acrylic acid monomer is 35%, the neutralization degree of acrylic acid is 70%, the initiator is 0.2% The weight ratio of monomer to monomer was 0.02%, the content of kaolin was 12%, the water absorption of distilled water was 920g / g. Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy Characterization results show that the composite resin is a typical sea / island structure, there is a copolymerization reaction between acrylic acid and kaolin.