Study on the Improvement in the One Dimensional Mathematical Model of the Air Drag in Melt Blowing Process

The one dimensional mathematical model of the air drag in melt blowing process, which had been put forward by Uyttendaele and Shambaugh is improved. The influence of the density and the specific heat capacity of polymer melt at constant pressure changing with polymer temperature on fiber diameter are studied. The power - law model is introduced as the constitutive equation. The influences of polymer volume flow rate, initial polymer temperature, initial air velocity and initial air temperature on fiber diameter are discussed.

微波技术制备吸水性无纺布

讨论了微波加热的基本原理及影响因素,研究了微波法制备缠绕着丙烯酸交联物的吸水性无纺布的生产工艺,讨论了AA浓度、引发剂用量、辐射时间、交联剂用量诸因素对无纺布相对吸水率的影响。通过正交实验得出最佳工艺条件及配方:微波功率485W,微波辐射时间30s,AA浓度35％,引发剂与单体摩尔比为0.05,交联剂用量为0.3％。与常规法相比,微波加热法优于常规加热法。