膨润土/丙烯酸聚合物吸水保水剂合成及性能研究

对膨润土/丙烯酸聚合物复合吸水保水剂研究结果表明,膨润土/丙烯酸吸水保水剂的最佳制备条件为:交联剂、膨润土、引发剂用量分别占单体质量的0.05%、15%、0.45%,反应温度为75℃,中和度为90%;在最佳条件下制备的膨润土/丙烯酸吸水保水剂的饱和吸蒸馏水倍率最高为796g/g;保水剂在室温下(25℃,湿度为77%)24h的水分蒸发量小于9%,而在60℃的水浴锅中10h水分蒸发99.72%;在转速4000r/min下离心10min保水率为57.4%,不同离心转速下,保水能力差异较小,该保水剂有较好的吸水保水性能,可广泛用于荒漠治理.

Synthesis and Propertyies of Bentonite/Acrylic Resin Water-Absorbent & Retaining Agent

The research results of bentonite/acrylic resin water-absorbent & retaining agent show that the best preparation conditions are as follows: the amount of cross-linking agent, bentonite and initiator, accounting for 0.05%, 15%, 0.45% of the monomer mass, respectively. The reaction temperature is 75℃, and the neutralization degree of 90%. Water-absorbent & retaining agent has swelling capacity 796g/g in distilled water. At room temperature (25℃, relative humidity of 77%), 24 hours water evaporation quantity is less than 9%, and in 60℃ water-bath, 10 hours water evaporation quantity is 99.72%. In the centrifugation speed of 4000 r/min, 10min the water-retention rate is 57.4%.With different centrifugal speeds, there are smaller differences in water-retention capacity. Water retaining agent has good capacity of water-absorb & holding, it can be widely applied to harness hungriness.