电致发光有机硅合成革涂层的构建及性能研究

Construction and Properties of Electro-Luminescent PDMS Based Synthetic Leather Coatings

受交流电致发光器件多层级结构启发,以聚(3,4-乙烯二氧噻吩)-聚苯乙烯磺酸/乙二醇/非离子水性聚氨酯(PEDOT∶PSS/EG/NWPU)复合涂层作为表面处理层、ZnS∶Cu/聚二甲基硅氧烷(PDMS)作为表面层、BaTiO_(3)/PDMS作为粘接层、银纳米线(AgNWs)/超细纤维贝斯复合材料作为基材,制得具有电致发光功能的有机硅合成革。首先系统考察了各功能层构成以及外部驱动电压、频率等对材料导电性、组成器件发光性能的影响;然后,将优化后的涂层与基材层层结合制得有机硅合成革,表征其电致发光性。结果表明:PEDOT∶PSS/EG/NWPU中EG和NWPU的体积分数分别为3%和20%时,涂层导电及器件发光性能最优;发光层厚度优选为40μm;介电层的存在可提升器件的光照度和发光稳定性;AgNWs的引入可赋予超细纤维贝斯导电性,负载量为10%(质量分数)时,贝斯方阻可低至0.2Ω/sq;通过电致发光驱动器(电压110 V,频率1700 Hz)通电测试表明,该方法制造的有机硅合成革具有电致发光功能。

Inspired by the multilayer structure of the alternating current electro-luminescence devices,the PDMS-based synthetic leather with electroluminescence was prepared by poly(3,4-ethylene dioxythiophene)-poly(styrene sulfonate)/glycol/non-ionic polyurethane(PEDOT∶PSS/EG/NWPU)composite coating as the surface treatment layer,ZnS∶Cu/PDMS as the surface layer,BaTiO_(3)/PDMS as the adhesive layer,and silver nanowires(AgNWs)/microfiber composites as the base materials.Firstly,the effect of the composition of each layer,as well as the external driving voltage and frequency on the conductivity and the luminescence of the devices were systematically investigated.Then,the optimized coating was synthesized with the substrate layer to make PDMS-based synthetic leather and represented its electroluminescence.Results show that PEDOT∶PSS/EG/NWPU with EG and NWPU is 3 vol%and 20 vol%,respectively,represents the optimal luminescence of the device.The light-emitting layer is preferably 40μm.The dielectric layer improves the illumination and luminescence stability of the device.The introduction of AgNWs makes the electrical conductivity to the microfiber as low as 0.2Ω/sq at the content of 10wt%.The electroluminescent of PDMS-based synthetic leather has been confirmed by electroluminescent driver(voltage 110 V,frequency 1700 Hz).