【摘要】 提出当对无磁液氮玻璃钢杜瓦抽真空时 ,向无磁液氮玻璃钢杜瓦的真空夹层充注微量的二氧化碳气体 ,所充入的二氧化碳气体就会和玻璃钢表面的氢气、一氧化碳、二氧化碳、甲烷等气体发生协同交换反应 ,使玻璃钢表面的氢气、一氧化碳、二氧化碳、甲烷等气体的脱附速度大大增加 ,减少了抽真空时间。由于无磁液氮玻璃钢杜瓦内使用的活性炭吸附剂对二氧化碳的吸附性能远远大于对玻璃钢材料所放出的氢气、一氧化碳和甲烷等主要气体的吸附性能 ,从而使得抽好真空的无磁液氮玻璃钢杜瓦的真空保持时间大大增加 ,延长了无磁液氮玻璃钢杜瓦的使用寿命更多还原

【Abstract】 In this paper, the author puts forward that while the non-magnetic liquid nitrogen GFRP dewar vacuumizes, the CO 2 is charged in the interlayer, then the CO 2 takes part in the synergistic exchange reactions with H 2, CO, CH 4 et al. from the GFRP surface, which leads to the desorption speed of H 2, CO, CH 4 increasing very much. The time to vacuumize is shortening. Due to the stronger adsorption performance of the active carbon to CO 2 than to H 2, CO, CH 4, the vacuum degree of the non-magnetic liquid nitrogen GFRP dewar will maintain longer time, and then the operation life span of the non-magnetic liquid nitrogen GFRP dewar will increase.更多还原