涤纶纤维介电性能研究

Preparation and Properties Study of Layer-by-Layer Self-assembly Cotton Fabric Based on PEDOT： PSS/Chitosan

首先利用自行设计的工艺,将纤维和石蜡混合制备了不同纤维长度和纤维含量的纤维试样,对其介电常数进行了测试与分析,研究了同纤维长度下,涤纶纤维含量对涤纶纤维试样介电常数的影响,其次详细探讨了涤纶纱线垂直和平行排布方式对介电常数的影响。结果表明:纤维含量对其介电常数有较大的影响,纤维越多,其介电常数的实部和虚部越大,且随着纤维长度的变大,介电常数的差值逐渐减小。当纱线试样排布方式与外加电场垂直时,纱线细度和排列密度均对介电常数造成了影响。当排列密度相同时,纱线越粗,纱线的间隔越小,纱线间贮存的空气越少,其介电常数值越大,其储存能量的能力和介电损耗能力越强。随着纱线排列密度的增加,三种纱线的介电常数数据差距减小。纱线与电场方向平行排列时的介电常数高于与电场垂直排列的纱线的介电常数。

PEDOT ：PSS and Chitosan （CS） were utilized as functional agent to modify the surface of cotton fabric via a facile electrostatic layer-by-layer self-assembly method and the ultraviolet blocking and conductive properties of the treated fabrics were studied. The surface pattern structure of modified cotton fabric was analyzed by SEM, FTIR and K/S value; ultraviolet blocking property was assessed by adopting UPF and conductive prop- erty was measured on the surface of fabric by adopting two-probe method and IV curve was got. The studied showed that the fabric modified by graphene had excellent ultraviolet blocking property and its conductive property also increased. With 5 times assemblies, the UPF value of treated fabric was up to 92.39, while that of the untreated one was just 9.37. And the electrical resistivity of the treated fabric decreased from 7.19 ×107Ω· m to 4.4 ×102Ω· m.