新型无胶粉滤芯对车内空气的净化效果

基于自行研发的无(溶剂)胶粉活性炭滤布工艺,完全通过物理复合技术制备一种新型空调滤芯。依据RoHS指令测得的铅、镉、汞、六价铬、多溴联苯和多溴二苯醚浓度均低于检测限。按GB/T 14295-2008进行性能测试,结果显示,阻力值和容尘量分别为129.5 Pa(4 g)。在模拟车内空气条件下的颗粒物过滤实验中,滤芯对粒径范围在0.5~2.5 μm的颗粒物平均去除率大于85%,而对粒径范围在2.5~(>10 μm)的颗粒物去除率在95%以上,高于普通滤芯在该粒径范围内30%~70%的去除率。车内空气净化实验表明,使用新型滤芯的车内PM2.5浓度在内、外循环条件下稳定值为0.3 μg·m-3和1.2 μg·m-3,而使用普通滤芯只能达到20.0 μg·m-3和30.2 μg·m-3。此外,该新型滤芯对NOx在1 h内的吸附容量可达2 676 mg,具有较好的吸附性能。

Purifying performance of new no-glue air filter for in-car air

Based on the "no-glue filtering cloth covered activated carbon" technology,a new air filter was produced through physical agglutination.The samples taken from this new air filter were analyzed under the guidance of the RoHS Directive.The concentrations of lead,cadmium,mercury,hexavalent chromium,PBBs and PBDEs were all lower than the limit of detection.Performance testing according to GB/T 14295-2008 demonstrated that the resistance and dust containing capacity of this new air filter were 129.5 Pa(4 g),respectively.During a particle capture experiment performed on simulated in-car air,the average filter efficiency in the particle size range of 0.5 to 2.5 μm was above 85% and in the size range of 2.5 to (>10 μm) exceeded 95%,which is much higher than the 30% to 70% filter efficiency of ordinary air filters.The results of an air purifying test performed in-car also illustrated that PM2.5 concentrations in cars using the new air filter were 0.3 μg·m-3 and 1.2 μg ·m-3 under inner circulation and outer circulation,respectively,while the concentrations in cars using common air filters could only decrease to 20.0 μg·m-3 and 30.2 μg·m-3.Moreover,the adsorption capacity of this new air filter for NOx was 2 676 mg in 1 h,indicating good adsorbing performance.