湿润剂表面张力对硫化矿尘吸湿效果的影响

采用毛细管反向渗透实验装置，以湿润剂表面张力为衡量指标，通过分析3种硫化矿尘在十二烷基苯磺酸钠（SDBS）、十二烷基磺酸钠(SDS)、十二烷基硫酸钠(K12)3种阴离子表面活性剂中的吸湿效果，比较得出3种表面活性剂湿润性能大小。利用ZISMA图得出表面活性剂在3种硫化矿表面铺展的临界表面张力值，并探究其值对湿润行为和湿润效果的影响。研究表明:3种阴离子活性剂的湿润性能SDBS＞SDS＞K12，湿润剂在3种硫化矿表面铺展的临界表面张力分别为27.3，26.6，26.0 mN/m,且吸湿增重和吸湿速度的峰值是受铺展润湿作用的影响。

Influence of surface tension of humectant on moisture absorption effect of sulfide dust

The wetting performance of three surfactants were obtained and compared through analyzing the moisture absorption effect of three types of sulfide dust in three types of anionic surfactants, including sodium dodecyl benzene sulfonate (SDBS), sodium dodecyl sulfate (SDS) and sodium lauryl sulfate (K12) by using the capillary reverse permeation experimental device and taking the surface tension of humectant as the measurement index. The critical surface tension values of surfactants spreading on the surface of three types of sulfide dust were obtained by ZISMA diagram, and their influence on the wetting behavior and wetting effect was explored. The results showed that the wetting performance of three anionic humectants was in the sequence of SDBS>SDS>K12, the critical surface tension of the humectants spreading on the surface of three types of sulfide dust was 27.3 mN/m, 26.6 mN/m and 26.0 mN/m respectively, and the peak values of moisture absorption weight gain and moisture absorption speed were influenced by the spreading wetting effect.