大气压下气隙均匀放电提高无纺布表面亲水性

Application of Atmospheric Air Uniform Discharge to Improving Hydrophilicity of Nonwovens

试验研究了大气压下3 mm空气间隙均匀放电(APUD)和均匀分布丝状放电(UDFD)及经它们处理后聚丙烯无纺布的表面亲水性。结果表明,在一定条件下,UDFD可转化为APUD;UDFD易烧蚀聚丙烯无纺布材料,而APUD不会;经APUD处理后无纺布上水滴的接触角可由处理前的120°变为60°。

The atmospheric pressure uniform discharge （APUD） from a 3 mm air gap was generated in this paper. The atmospheric pressure uniform discharge （APUD） at 3 mm air gap is generated in this paper. The discharge characteristics of APUD are compared with that of the uniformly distributed filamentary discharge （UDFD） using the electrode configuration of dielectric barrier discharge （DBD）. The surface hydrophilicity of PP nonwovens is tested by the APUD and UDFD respectively. It is found that a homogeneous APUD from a 3 mm air gap could be transited and obtained under specific conditions from UDFD. The PP nonwovens is destroyed when treated by UDFD, but not by APUD. The contact angle of the static distilled water drop on the treated nonwovend changes from 120° to 60° by APUD.