Study On Insulation Packaging Of Biological Vaccine In Transportation

This topic selects inactivated vaccine of clostridium as the biological vaccine and then researches the heat preservation performance of the extruded polystyrene(XPS)insulation box in different ambient temperature environment and different quality of refrigerant.The paper designs a reasonable form of transport insulation packaging,so that the biological vaccines are always in a reasonable temperature range in the transport process.According to the data,the topic selects 40mm thickness with different size arc edges of XPS insulation boxes.The sizes of arc edge respectively are rectangular ridge,25mm arc edge,50mm arc edge,75mm arc edge and 100mm arc edge.By tested each of those insulation boxes,the average temperature growth speed of center point respectively are 0.3026?/h?0.2879?/h?0.2769?/h?0.2459?/h?0.2456?/h?The results show that the larger size of arc edge,the better insulation performance.The topic researches temperature distribution curves of 7 different test points in different three ambient temperature environment.The results show that the holding time of the top layer in the box is greatly affected by the refrigerant.When the temperature and humidity are 23?/50%RH and 30?/85%RH,the top temperature of the insulation box rises faster and the center temperature is the most stable.When the quality of the refrigerant is less,the bottom temperature increases rapidly.With the increase of the refrigerant,the temperature rising speed slows down and the holding time is greatly increased in the bottom of the box.When the temperature and humidity are 40?/90%RH,the bottom temperature of the insulation box rises faster and then the upper right corner.Then study on the impact of 8 different mass ratios on XPS insulation boxes'insulation performance under the different four ambient temperature environment.The results show that with the increase of the mass ratio,the holding time of different test points gradually increases.At the 23?/50%RH ambient condition,when the mass ratios are 0.89:1,1.33:1,2.00:1,the insulation box can insulate for 12h,24h and 36h respectively.And,when the mass ratio was 2.44:1,the holding time is the longest,reaching 44.80h.At the 30?/85%RH ambient condition,when the mass ratios are 1.33:1,1.78:1,the insulation box can insulate for 12h and 24h respectively.And,when the mass ratio was 2.44:1,the holding time is the longest,reaching 34.59h.At the 40?/90%RH ambient condition,when the mass ratio is 2.00:1,the insulation box can insulate for 12h.And,when the mass ratio was 2.44:1,the holding time is the longest,reaching 21.06h.In variable temperature environment,when the mass ratio is 1.33:1,the insulation box can insulate for 12h.And,when the mass ratio was 2.44:1,the holding time is the longest,reaching 30.96h.Choice the holding time of the center point as the research object,and then test the insulation performance of different temperature and different mass ratio conditions.Based on the results of the experiment,set up a 3D model of temperature,mass ratio,and the holding time.According to the surface equation,choose three different temperatures and mass ratios to make verification.The results find that error range is lower than 10%,so the equation has a certain reference value.Through random vibration and drop test to detect the physical properties of the incubator,the results show that the insulation box has good cushioning performance and protection and can be used to biological vaccine transport packaging.