新型过氧化氢稳定剂的制备及性能研究

Study on Preparation and Properties of New Hydrogen Peroxide Stabilizer

关键词:  聚合物  稳定剂  过氧化氢  漂白

Key Words:polymers  stabilizer  hydrogen peroxide  bleaching

摘要:本研究以马来酸-丙烯酸共聚物（MA-AA）为主体稳定剂，与螯合型助剂复合，制备了新型过氧化氢（H₂O₂）稳定剂，通过测定新型H₂O₂稳定剂对金属离子的螯合值、H₂O₂分解率及进行化机浆H₂O₂漂白实验，研究新型H₂O₂稳定剂对H₂O₂漂白的稳定性能，并与进口稳定剂进行比较。结果表明，新型H₂O₂稳定剂对Fe³⁺、Mg²⁺、Mn²⁺、Ca²⁺的螯合能力分别达262.3、105.2、141.4、160.3 mg/g；在模拟国内4个地区水质中不同金属离子含量条件下，新型H₂O₂稳定剂能够有效抑制H₂O₂分解，具有与进口产品相当的稳定能力。在纸浆漂白工艺条件下，新型H₂O₂稳定剂在低用量时，对桉木化机浆、杨木化机浆、蔗渣化机浆和芦苇化机浆的漂白均有良好的稳定效果。

Abstract:A new hydrogen peroxide （H₂O₂） stabilizer was prepared by using maleic acid-acrylic acid copolymer （MA-AA） as the main stabilizer and compounded with chelating co-stabilizer. The stability of the composite stabilizer for H₂O₂ bleaching was studied by measuring the chelating ability of metal ions， the decomposition rate of H₂O₂ and the H₂O₂ bleaching experiment of chemi-mechanical pulp， and the performance of the composite stabilizer was compared with that of the imported stabilizer. The results showed that the chelating capacity of Fe³⁺， M^g2+， Mn²⁺， Ca²⁺of the new H₂O₂ stabilizer reached 262.3， 105.2， 141.4， 160.3 mg/g， respectively. Under the condition of simulating the different metal ion contents in the water of four regions in China， the new H₂O₂ stabilizer could effectively inhibit the decomposition of H₂O₂， and had the same stability ability as the imported products. Under the condition of industrial pulp bleaching process， the compound stabilizer had good bleaching effect on eucalyptus， poplar， bagasse， and reed chemi-mechanical pulp at low dosage.