论文部分内容阅读
丙烯酸盐聚合物(AC—400)浆液是专门设计为土壤灌浆防止地下水、为混凝土和下水道网络控制渗漏用的新单体体系的浆液。1980年这种浆液用来代替因毒性较重而于1978年停止出售的丙烯酰胺(AM—9)浆液。新浆液是一种用氧化还原引发体系和少量的次甲基双丙烯酰胺作交联剂进行聚合的丙烯酸盐单体的混合物。这种浆液毒性约只AM—9浆液的百分之一,它可用现有设备灌浆,并由通用的三乙醇胺(TEA)与过硫酸胺(AP)作引发体系。 AC—400浆液以含40％固体物的液体形式上市,用于土壤加固和地下水控制,它具有粘度低(2厘泊)渗透率小(5×10~(-9)厘米/秒)和胶凝时间可控制等优点。新浆液的工作特性可与AM—9和水玻璃浆液相比拟。
Acrylate polymer (AC-400) slurries are grouts designed specifically for soil grouting to prevent groundwater and to control the leakage of new monomeric systems for concrete and sewer networks. This slurry was used in 1980 to replace the acrylamide (AM-9) slurry that was sold in 1978 due to its high toxicity. The new slurry is a mixture of acrylate monomers polymerized using a redox initiator system and a small amount of methyldiallylacrylamide as a crosslinking agent. This slurry is about 1% of the AM-9 slurry, which can be grouted with existing equipment and initiated by common triethanolamine (TEA) and ammonium persulfate (AP). The AC-400 slurry is marketed as a 40% solids liquid for soil stabilization and groundwater control with a low viscosity (2 centipoise) permeability (5 × 10 -9 cm / sec) and a gel Coagulation time can be controlled and so on. The working characteristics of the new slurry can be compared with AM-9 and water glass slurry.