醋丙乳液对道路浮尘的稳定作用  

Stabilizing Effect of Vinyl Acetate-Acrylate Emulsion on Road-Floating Dust

作　　者：高丽雅[1] 佟云华 苏璐璐 柳鹏 张福强[1,3] Liya Gao;Yunhua Tong;Lulu Su;Peng Liu;Fuqiang Zhang(School of Chemical Engineering and Technology,Hebei University of Technology,Tianjin 300130,China;Kalavinka (TianJin) Environment Technology Co.Ltd.,Tianjin 301700,China;Tianjin Key Laboratory of Materials Laminating Fabrication and Interface Control Technology,Tianjin 300130,China)

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

出　　处：《高分子材料科学与工程》2019年第9期114-118,共5页Polymer Materials Science & Engineering

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

摘　　要：采用半连续聚合法制备了丙烯酸羟乙酯(HEA)、丙烯酸(AA)为功能单体的醋丙乳液,研究了乳液对道路浮尘的稳定作用。结果表明,醋丙乳液与浮尘之间的接触角随HEA和AA用量增加而降低。3.0%AA的用量时提高其中和度,接触角不断下降,润湿性改善,浮尘颗粒堆积的密实性提高。AA完全中和时,接触角为33.0°,道路浮尘的毛细黏附力达到59.61 nN,内聚力增强,浮尘稳定性提高。醋丙乳液稳定化道路浮尘的7 d压缩强度为8.13 MPa,增强效果来自于聚合物与浮尘颗粒之间的氢键和与Ca2+、Mg2+的交联反应等。To control air pollution, a vinyl acetate-acrylate emulsion was prepared by semi-continuous process with the functional monomers of hydroxyethyl acrylate(HEA) and acrylic acid(AA), and its stabilizing effect on road-floating dust(RFD) was discussed. Results indicate that the emulsion-RFD contact angle reduces with the increasing dosages of HEA or AA. When the AA neutralization degree is enhanced at the dosage of 3.0%, the contact angle decreases, the emulsion wetting ability to RFD is improved, and particles to particles are stacked more densely. When AA is neutralized completely, the contact angle reaches 33.0°, the capillary adhesion force increases to 59.61 nN, the cohesion force is raised, and therefore, the floating dust stability is improved. For emulsion stabilized RFD, the 7 d and 28 d compressive strength reach 8.13 MPa and 8.27 MPa, respectively. Thus, these data suggest the reinforcing effect is originated from the polymer-RFD hydrogen bonding and ion cross-linking reactions.

关 键 词：醋丙乳液 润湿 压缩强度 道路浮尘 空气污染 

分 类 号：TQ316.334[化学工程—高聚物工业]