Department of Chemical Engineering, CHUNG-ANG University, Dongjak, Seoul, 06974, Republic of Korea.
Department of Mechanical and Aerospace Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, Hong Kong.
J Nanosci Nanotechnol. 2019 Mar 1;19(3):1649-1656. doi: 10.1166/jnn.2019.16196.
Polyethylene glycol (PEG) based water-soluble polymer composites were fabricated for mineral admixture encapsulants to be used in underground sinkhole restoration. Linear low-density polyethylene (LLDPE) and talc were added to the composites to increase their mechanical strengths and heat resistances. PEG/LLDPE/Talc composites were manufactured via melt mixing using a twin extruder. Blending PEG and LLDPE increased the mechanical properties and heat resistances of the composite, but decreased the water solubility. Talc was added to the composite to increase mechanical properties and heat resistance. The addition of talc increased the water solubilities of PEG-based composites. The highest tensile strength and impact strength were 2.89 MPa and 2.86, respectively, the increase rate being 9.63-fold relative to that of pristine PEG.
用于地下天坑修复的矿物外加剂包封材料，制备了基于聚乙二醇（PEG）的水溶性聚合物复合材料。线性低密度聚乙烯（LLDPE）和滑石粉被添加到复合材料中，以提高其机械强度和耐热性。通过双螺杆挤出机熔融共混制备了 PEG/LLDPE/滑石粉复合材料。PEG 和 LLDPE 的共混提高了复合材料的力学性能和耐热性，但降低了水溶性。滑石粉的加入提高了复合材料的力学性能和耐热性。滑石的加入增加了基于 PEG 的复合材料的水溶性。拉伸强度和冲击强度最高分别为 2.89 MPa 和 2.86，与纯 PEG 相比，增长率为 9.63 倍。
