本文二维码信息
二维码(扫一下试试看!)
Preparation of Lignosulfonate Sodium and Sodium Acrylate Graft Copolymer and Its Dust Suppressant Performance
  
DOI:10.11980/j.issn.0254-508X.2019.06.007
Key Words:lignosulfonate sodium  graft copolymer  sodium acrylate  anti-wind erosin performance  dust suppression performance
Fund Project:国家自然科学基金(31700515);天津市级大学生创新创业训练计划项目(201810057157)。
Author NameAffiliation
ZHANG Jiayin1 1. Tianjin Key Lab of Pulp & Paper Tianjin University of Science & Technology Tianjin 300457 
WANG Guanhua1,* 1. Tianjin Key Lab of Pulp & Paper Tianjin University of Science & Technology Tianjin 300457 
HANG Jiahui1 1. Tianjin Key Lab of Pulp & Paper Tianjin University of Science & Technology Tianjin 300457 
XU Li1 1. Tianjin Key Lab of Pulp & Paper Tianjin University of Science & Technology Tianjin 300457 
JIN Mengchen1 1. Tianjin Key Lab of Pulp & Paper Tianjin University of Science & Technology Tianjin 300457 
MA Yanming2 2.Tangshan Ruoshui Ecology & Pollution Control Technology Co. Ltd. Tangshan Hebei Province 063000 
SI Chuanling1 1. Tianjin Key Lab of Pulp & Paper Tianjin University of Science & Technology Tianjin 300457 
Hits: 298
Download times: 99
Abstract:An orthogonal design was applied to optimize lignosulfonate sodium(Ls-Na) grafting copolymerization with sodium acrylate(SAA). The lignosulfonate graft copolymer(Ls-Na-SAA) was characterized by FT-IR, SEM and TGA. The results showed that sodium acrylate was grafted onto the lignosulfonate sodium successfully and the graft copolymer exhibited enhanced thermal stability. Under the optimized grafting conditions(temperature 65℃, reaction time 3 h, neutralization degree 60% and initiator concentration 10%), the performances of Ls-Na and Ls-Na-SAA as dust suppressants were analyzed and compared. The results indicated that the water retention capacity of Ls-Na-SAA was basically unchanged after the grafting, its compression strength increased from 37.0 kPa to 455.6 kPa when the mass fraction of spraying was 2.5% and the sand loss rate decreased from 25.2% to 3.1% when the mass fraction of spraying was 1.5%. After grafting copolymerization, Ls-Na-SAA formed a reticular cross linking structure and more binding layers among the sand particles. These features contributed to the improved compressive strength and anti-wind erosion performance of Ls-Na-SAA.
View Full Text  View/Add Comment  Download reader