当前位置: X-MOL 学术Chemosphere › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Fabrication of anti-scaling HDPE/fluorinated acrylate polymer/nano-silica composite for landfill leachate piping system
Chemosphere ( IF 8.8 ) Pub Date : 2021-06-22 , DOI: 10.1016/j.chemosphere.2021.131302
Min Li 1 , Rui Zhao 1 , Tianxue Yang 2 , Sude Ma 3
Affiliation  

Clogging generally happens to the leachate piping system, which poses a risk to the environment. A low surface energy nanocomposite is prepared to mitigate the cloggings, by adding the fluorinated acrylate polymer and hydrophobically modified nano-silica into high-density polyethylene (HDPE) substrate. The best addition of the fluorinated acrylate polymer and the nano-silica is given as 15% and 5%, to produce the composite with a low surface energy of 29.4 mJ/m2. Through the characterization of contact angle (CA), electrochemical corrosion, scanning electron microscopy (SEM) with energy dispersive X-ray spectrometer (EDS), atomic force microscope (AFM) and thermogravimetry (TG), the composite shows low wettability, good corrosion resistance and thermal stability. The surface hydrophobic property of the composite remains unchanged after being immersed in an acidic (pH = 2) and an alkaline (pH = 12) solution, indicating that the prepared composite has strong adaptability to the extreme environments. In addition, the composite shows better anti-scaling performance than that of the commercial high-density polyethylene (HDPE) and polyvinyl chloride (PVC) pipe materials by application of a dispensing leachate immersion test. The results provide insights into engineering practice for the design and manufacture of pipe materials for leachate collection and transport.



中文翻译:

垃圾渗滤液管道系统防垢HDPE/氟化丙烯酸酯聚合物/纳米二氧化硅复合材料的制备

渗滤液管道系统通常会发生堵塞,这会给环境带来风险。通过将氟化丙烯酸酯聚合物和疏水改性纳米二氧化硅添加到高密度聚乙烯 (HDPE) 基材中,制备了一种低表面能纳米复合材料以减轻堵塞。氟化丙烯酸酯聚合物和纳米二氧化硅的最佳添加量为 15% 和 5%,以生产具有 29.4 mJ/m 2低表面能的复合材料. 通过接触角 (CA)、电化学腐蚀、扫描电子显微镜 (SEM) 与能量色散 X 射线光谱仪 (EDS)、原子力显微镜 (AFM) 和热重分析 (TG) 的表征,复合材料表现出低润湿性、良好的腐蚀性电阻和热稳定性。复合材料在浸入酸性(pH=2)和碱性(pH=12)溶液后表面疏水性能保持不变,表明制备的复合材料对极端环境具有很强的适应性。此外,通过分配浸出液浸泡试验,该复合材料显示出比市售高密度聚乙烯(HDPE)和聚氯乙烯(PVC)管材更好的防垢性能。

更新日期:2021-06-28
down
wechat
bug