4种保水剂吸水和保水性能的差异性研究

通过室内实验,对比研究了四种保水剂的吸水、保水性能。测试吸水倍率、吸水速率、保水能力及有效持续性等指标,采用评分法对四种保水剂进行综合评价。结果表明:保水剂的吸水倍率与所吸溶液的性质有很大关系。4种保水剂在去离子水中的吸水倍率最高,随着溶液中离子浓度的增大吸水倍率逐渐减小。保水剂颗粒大小对吸水速率有较大影响,对其他指标影响均不大;4种保水剂均具有较强的反复吸水能力。综合分析认为,4种保水剂中,吸水保水性能最优的保水剂为4#保水剂,其成分为聚丙烯酸盐和聚丙烯酰胺共聚体。其次为3#保水剂,再次为1#保水剂,最差的是2#保水剂。

Comparative Studies on Water-absorption and Water-retention Properties of Four Kinds of Super Absorbent Polymers

According to indoor experiments, water absorbent capacity, water absorption rate, moisture preserving capacity and effective sustainability of 4 kinds of super absorbent polymers are comparatively studied and comprehensively evaluating them by scoring method. The result shows that water absorbent capacity of super absorbent polymers has a great relationship with the properties of solution absorbed. All the super absorbent polymers have the highest water absorption capacity in deionized water and the value of water absorption capacity decreases when the concentration of ion in the solution raises. Water absorption rate is impacted significantly by particle sizes which effects on other three kinds of characteristics are little. These absorbent polymers all have powerful repeatedly absorbent capacity. It was synthetically considered that among 4 kinds of super absorbent polymers, the best one is 4#, which contains polyacrylate and polyacrylamide. The second is 3#, 1# takes the third place, while 2# is the worst.