TRANSPARENT CONDUCTIVE INK COMPOSITED BY CARBON NANO TUBES AND POLYMERS, AND METHOD FOR PREPARING SAME

摘要

A transparent carbon nano-tube (CNT) polymer compound conductive inks and preparation methods thereof. The conductive ink includes modified CNT, conductive polymer, water-soluble polymer cosolvent, polymer modification additive, surfactant and deionized water. Preparation is performed to realize uniform dispersion of CNT and conductive polymer solution and the obtained ink has good stability and re-dispersibility. The CNT polymer compound conductive ink and methods can be used for preparing fine electrode patterns under room temperature by adopting such devices as spin coating and ink jet printing. Photoresist conductive ink can be prepared to realize one-off preparation of electrode patterns with fine structures. The ink can be applied for very transparent electrode materials in such devices as flexible OLED displays, solar cells, liquid crystal displays and panels of touch screens. It has such advantages as good compatibility with transparent polymer matrix and strong adhesion to ensure use life of the flexible electrode.

主权项

1. A transparent carbon nano-tube (CNT) polymer conductive ink, comprising the following components in the following weight parts:[1.]modified CNT 0.01%-1%,[2.]conductive polymer 0.17%-2%,[3.]water-soluble polymer cosolvent 0.43%-5%,[4.]surfactant 0.01%-0.05%,[5.]polymer modification additives0.037%-0.44%,[6.]deionized wateradded to 100%, wherein the modified CNT has been prepared b a method that includes:
adding 30% HNO3 aqueous solution into CNT,after dispersion by ultrasonic wave for 40 min, stirring at 50-70° C. for 30 min,filtering with a 200 μm porous membrane,rinsing to neutrality, anddrying at 100° C. to obtain the modified CNT after purification.