水性聚合物的合成及其对土壤尘的抑制作用  

Synthesis of waterborne polymer and its suppression effect on earth dust

作　　者：郭宏飞[1] 苏璐璐 张福强[1,2] 柳鹏 殷福星 GUO Hongfei;SU Lulu;ZHANG Fuqiang;LIU Peng;YIN Fuxing(School of Chemical Engineering and Technology,Hebei University of Technology,Tianjin 300130,China;Tianjin Key Laboratory of Materials Laminating Fabrication and Interface Control Technology,Tianjin 300130,China;Kalavinka(Tianjin)Environment Technology Co.Ltd.,Tianjin 301700,China)

机构地区：[1]河北工业大学化工学院,天津300130 [2]天津市材料层状复合与界面控制技术重点实验室,天津300130 [3]加翎加(天津)环境科技有限公司,天津301700

出　　处：《中国粉体技术》2020年第1期35-40,共6页China Powder Science and Technology

基　　金：天津市科技计划项目，编号:16ZXCXSF00010;河北省科技计划项目，编号:17273703D

摘　　要：为控制风力排放的土壤尘,合成水性聚合物抑尘剂,研究聚合物对土壤尘的润湿、聚集和保湿作用。结果表明:丙烯酸有助于降低聚合物与土壤尘之间的接触角,增大土壤尘的Zeta电位;聚合物促进细颗粒团聚,提高内聚力,在干燥状态下以致密的表面封闭粉体,显著提高土壤尘的稳定性;湿润状态下,聚合物延缓水挥发,提高保湿性,有效降低风力侵蚀性;聚合物用量为1.0%时,20℃、相对湿度45%条件下的抑尘时间为洒水的2.38倍,风速为12 m/s时模型抑尘效率高达86.07%;在裸土操场,规模化喷洒使用24 h后,PM2.5和PM10的抑尘效率分别达到62.96%和71.05%,现场应用效果与估算结果非常接近,证实性能评价方法的可行性。To control the aeolian emission from earth dust,waterborne polymeric dust suppressants were synthesized,and the effects on particles agglomeration,moisture retention and wetting ability to earth dust were investigated.The results show that acrylic acid favors polymer-dust contact angle,and increases dust Zeta potential.Such polymers facilitate fine particle aggregation,improve cohesion forces,and in arid status,distinctly enhance the soil dust stability by compacted seals.However,in moistened state,wind erodibility is effectively reduced via hindering vaporization and raising mois ture-retention.At the temperature of 20℃,relative humidity of 45%and polymer mass dosage of 1.0%,the suppress ing duration attain 2.38 times of watering,and at wind rate of 12 m/s,the estimated suppression efficiency(SE)is 86.07%.Extensive spraying 24h later on a bare earth playground,the PM25 and PM10 SE reach 62.96%and 71.05%,theoretical gap to field application results being diminished,and thus confirmed this feasible evaluating methodology.

关 键 词：悬浮颗粒物 抑尘剂 土壤尘 扬尘排放 降尘 

分 类 号：TB496[一般工业技术]