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Electrical Properties of LB multilayers of DDAC (II)—Charge Decay
Dong Yaming
Author NameAffiliationE-mail
Dong Yaming Chemical - Physics GroupDepartment of PhysicsEast China University of Science &TechnologyShanghai 200237 ymdonga6@online.sh.Cn 
Abstract:
Many different properties of floating and deposited DDAC films have been introduced,especially introduced the nonlinear variation of conductance on DODAC multilayers. As a fabric softener,the capability of dissipating static charge which obtained by using a Scorotron arrangement,is also very important. In this paper,another electrical property charge decay under different relative humidities(RH) is reported. The percolation theory applied in previous paper is again employed here to interpret the nonlinear relationship between charge decay and RH. The experimental data show that there are two steps for the decay;the first step is quite fast within the initial 30 min,after that is a rather slow step. Although DDAC is an insulating material,it has very strong ability to absorb moisture from the atmosphere,this makes DDAC a better conductance than polyester. According to the measurement of electrical properties of DDAC,it is not only a very good fabric softener but also a good conducting material under the conditions of high relative humidities.
Key words:  Charge decay,Charging surface,Scorotron
FundProject:
DDAC LB膜的电学性质研究(II)—电荷衰变
董亚明*
摘要:
在DDAC单分子层在气—液界面上的各种性质以及多分子层电导率随相对湿度的非线性变化[1-3]的基础上,介绍单分子层及多分子层在不同湿度条件下静电电荷随时间横向衰变的情况。使用半导体(或晶体)电荷渗透的理论来解释多分子层电荷衰变的非线性变化与相对湿度的关系。实验数据表明,电荷衰变可以分成两个阶段,即开始时的迅速衰变和随后的缓慢衰变过程。尽管DDAC是绝缘材料,可是它有良好的向空间吸附水分的能力,因而,其导电能力和驱除静电的能力比聚脂材料要好得多。DDAC不仅是一种良好的纤维软化剂而且在一定的相对湿度条件下具
关键词:  电荷衰变  表面充电  斯克罗窗
DOI:1003-7713/2000/06-0726-05
分类号: