泡沫状树脂制备及其对消防废水的吸收性能

以马铃薯淀粉和丙烯酸为原料、过硫酸钾为引发剂和N,N’-亚甲基双丙烯酰胺为交联剂,部分交联(预交联)后,通过微波辐射完成交联、发泡和干燥,制备泡沫状高吸水树脂,并考察工艺条件对泡沫树脂性能的影响。结果表明:糊化时淀粉与水的质量比1∶10,预交联15 min,微波辐照能量7.5 kJ/g的条件下,得到的泡沫状高吸水树脂吸收化工消防废水的最高吸水倍率可达155.7 g/g,前2 min内吸水倍率可达101.6 g/g,与未发泡树脂相比,吸水速率提高了80%,可实现事故现场的化工消防废水快速固定化。

Preparation of foam-like super absorbent polymer and its absorption capability of fire fight wastewater

A foam-like super absorbent polymer was prepared through microwave by using potato starch and acrylic acid as material,potassium persulfate as initiator,and N,N′-methylene bisacrylamide as crosslinking agent.The steps were pre-crosslinked,cross-linked,foamed,and dried by microwave.The effect of the technological conditions on the foamed resin properties were investigated.Results indicated that,when the mass ratio of starch and water was 1∶10,the time of pre-crosslinking was 15 min,and microwave power was 7.5 kJ/g,the maximum amount of absorption of the resin was 155.7 g/g,and 101.6 g/g in the previous 2 min for chemical industry fire fight wastewater.The wastewater absorption rate increased by 80% compared with the non-foamed resin.Thus,it could be used to achieve high-speed solidification of fire fight wastewater in accident scene.