摘要
以酸化纸质文献为对象，研究了真空冷冻干燥过程参数（加热板温度、纸质文献厚度、干燥室压强）对其冻干时间和品质的影响，并采用L9（3^3）正交实验得出各过程参数影响的主次顺序和除水比例。结果表明：各过程参数的不同处理水平对纸质文献冻干时间和品质均有显著的影响，且各过程参数影响主次顺序均为：纸质文献厚度、加热板温度、真空室压强。本实验三因素取值范围内的冻干过程优化参数分别为：纸质文献厚度7mm，加热板温度25℃，真空室压力10～20Pa。
Acid paper documents are selected as the research subject, and the influence of procedure parameters （ heating temperature, paper document thickness, pressure in drying room） on freeze-drying time and quality were explored, and the sequence of importance and dehydration rate were obtained by orthogonal method. The results indicate that the different treatment levels of procedure parameters had remarkable influence on both vacuum freeze-drying time and the quality, and the importance sequence of the three factors were as follows ： paper documents thickness, heating temperature, and pressure in drying chamber. The optimal parameters were a thickness of 7mm, heating temperature of 25 ℃ and pressure of 10 - 20 Pa by optimization analysis.
出处
《制冷学报》
CAS
CSCD
北大核心
2014年第2期100-105,共6页
Journal of Refrigeration
基金
江苏省科技厅项目"整本图书脱酸技术的研究"(BE2008682)资助~~
关键词
冷冻干燥
脱酸保护
纸质文献
过程参数
vacuum freeze-drying
deacidification protection
paper documents
procedure parameters
作者简介
通信作者简介李超，男（1961-），教授，南京师范大学能源与机械工程学院，E-mail：lichao@njnu．edu．cn。研究方向：流体机械，真空冷冻干燥工艺。
