基于扫描电镜的三元复合溶液分子聚集体形态的研究

Study on Molecular Aggregate Morphology of Ternary Composite Solution Based on Scanning Electron Microscope

采用电镜扫描、分槽注入相结合的方法,研究了不同注入流量及分压注入工具槽数对三元复合体系中分子聚集态。结果表明:溶液配置条件相同的情况下,分注工具槽数相同时,随流量增大,三元体系中聚合物分子分子链发生断裂的程度增大;流量相同时,随槽数的增多,分子链断裂程度增大,在受到分注工具的剪切作用时,由于三元复合体系网络稀疏,包裹水分子的能力差,从而导致在流经分注工具时的抗剪切能力也变差。

The molecular aggregation states of ternary composite systems were studied by means of electron microscopy and sub-slot injection. The results show that,when the number of dispensing tools is the same under the same conditions, the degree of fracture of the molecular chains in the ternary system increases with the increase of the flow rate. When the flow rate is the same, the degree of fracture of the molecular chain increases with the increase of the number of dispensing tools, and under the shear function of the dispensing tool, the ternary system has sparse network, and poor ability of wrapping water molecules, resulting in poor shear resistance when flowing through the dispensing tool.