非溶剂组分对有机载膜及防离子反馈MCP性能的影响

Effect of non-solvent component on performance of organic membrane and ion barrier MCP

有机载膜作为制备Al_(2)O_(3)防离子反馈膜的临时衬底,其膜层致密性及厚度显著影响Al_(2)O_(3)膜的致密性、电子透过性和防离子反馈微通道板(microchannel plate,MCP)的电特性。将非溶剂组分由超纯水改为NaCl溶液,通过金相显微镜及台阶仪分析不同NaCl溶液质量浓度所制有机载膜的膜层致密性及厚度;并测量相应有机载膜应用所制Al_(2)O_(3)膜的致密性、电子透过性及防离子反馈MCP的电特性。研究发现,NaCl溶液的质量浓度为0.05 g·ml^(-1)时,有机载膜具备高致密性;且制备的Al_(2)O_(3)防离子反馈膜致密,MCP的增益损失量较小,是最佳的非溶剂组分质量浓度。

The organic membrane is used as a temporary substrate for preparing the Al_(2)O_(3)ion barrier film,and its compactness and thickness significantly affect the compactness,the electrical transmittance characteristics of Al_(2)O_(3)ion barrier film and the electrical characteristics of ion barrier microchannel plate(MCP).The non-solvent component was changed from ultrapure water to NaCl solution,and the compactness and thickness of the organic membrane prepared by different NaCl solution concentrations were analyzed by metallographic microscope and step test analyzer.The compactness,the electrical transmittance characteristics and the electrical characteristics of ion barrier MCP prepared by the corresponding organic membrane were measured.The research results show that when the concentration of NaCl solution is 0.05 g·ml^(-1),the organic membrane has high compactness,and the Al_(2)O_(3)ion barrier film is compact and has small gain loss of MCP,which is the optimal non-solvent component concentration.