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A transparent pressure-sensitive adhesive with high electrical conductivity based on water-soluble nano core-shell hollow composite
Composites Science and Technology ( IF 9.1 ) Pub Date : 2018-03-12 , DOI: 10.1016/j.compscitech.2018.03.012
Lipei Yue , Xiaoyong Zhang , Weidong Li , Yongping Bai , Yudong Huang

The transparent conductive pressure sensitive adhesives (PSAs) are increasingly used for demanding applications, such as interconnects in electronic assemblies and transparent conductive films. Graphene is an efficient modifier for highly conductive PSAs, but it is hard to prepare homogenous composite and the transparency of PSA is bad, moreover, there is increased contact resistance during elevated temperature and humidity. In this work, we report a water-soluble core-shell hollow composite using graphene oxide (GO) modified by acrylamide as core through in situ polymerization. The composite is homogenous without any aggregation after testing in normal temperature for 100 days. The light transmittance of the PSA based on polyethylene terephthalate film is above 90% if the content of GO in the composite is under 0.2 wt%. The electrical conductivity of the PSA increases from 0.29 Sm-1 to 0.62 Sm-1 while the related humidity ranges from 0% to 90%. PSA film formed by core-shell composite can hold hydrone and exhibit advanced electrical conductivity in high humidity atmosphere. The conductivity of the composite is stable and unchanged in high temperature.



中文翻译:

基于水溶性纳米核-壳空心复合材料的高导电率透明压敏胶

透明导电压敏胶粘剂(PSA)越来越多地用于要求苛刻的应用,例如电子组件中的互连和透明导电膜。石墨烯是用于高导电性PSA的有效改性剂,但是很难制备均匀的复合材料,并且PSA的透明性很差,而且,在高温和高湿度下接触电阻会增加。在这项工作中,我们报告了一种水溶性核-壳中空复合材料,该复合材料使用通过丙烯酰胺改性的氧化石墨烯(GO)原位聚合为核。在常温下测试100天后,复合材料是均质的,没有任何聚集。如果GO在复合物中的含量低于0.2wt%,则基于聚对苯二甲酸乙二酯膜的PSA的透光率高于90%。-1至0.62 Sm -1,而相关湿度范围为0%至90%。由核-壳复合材料形成的PSA膜可以容纳氢,并在高湿度气氛下表现出先进的导电性。复合材料的电导率在高温下稳定且不变。

更新日期:2018-03-13
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