• Title/Summary/Keyword: modified gravure printing

Search Result 3, Processing Time 0.031 seconds

Directional Alignment and Printing of One Dimensional Nanomaterials Using the Combination of Microstructure and Hydrodynamic Force (마이크로 구조 및 동유체력을 이용한 나노와이어 미세 정렬 및 프린팅 기법)

  • Chung, Yongwon;Seo, Jungmok;Lee, Sanggeun;Kwon, Hyukho;Lee, Taeyoon
    • Korean Journal of Materials Research
    • /
    • v.23 no.10
    • /
    • pp.586-591
    • /
    • 2013
  • The printing of nanomaterials onto certain substrates is one of the key technologies behind high-speed interconnection and high-performance electronic devices. For the printing of next-generation electronic devices, a printing process which can be applied to a flexible substrate is needed. A printing process on a flexible substrate requires a lowtemperature, non-vacuum process due to the physical properties of the substrate. In this study, we obtained well-ordered Ag nanowires using modified gravure printing techniques. Ag nanowires are synthesized by a silver nitrate ($AgNO_3$) reduction process in an ethylene glycol solution. Ag nanowires were well aligned by hydrodynamic force on a micro-engraved Si substrate. With the three-dimensional structure of polydimethylsiloxane (PDMS), which has an inverse morphology relative to the micro-engraved Si substrate, the sub-micron alignment of Ag nanowires is possible. This technique can solve the performance problems associated with conventional organic materials. Also, given that this technique enables large-area printing, it has great applicability not only as a next-generation printing technology but also in a range of other fields.

The Evaluation of the Preparation and Characterization of Inks based on Surface-modified Specialty Carbon Black(SCB) (표면개질 스페셜티 카본블랙의 제조 및 잉크 특성 평가)

  • Park, Dong Jun;Kim, Song Hui;Park, Soo Youl
    • Textile Coloration and Finishing
    • /
    • v.30 no.3
    • /
    • pp.168-179
    • /
    • 2018
  • The modified surface of specialty carbon black(SCB) is one of the main technical factors for producing a uniform color and stable dispersion. In this work, the carboxylation or sulfonation process of SCB was used to improve the dispersive properties of hydrophilic solvents such as 1,6-hexanediol and propylene glycol monomethyl ether acetate(PGMEA). The results showed that the color strength of SCB DC2500G changed little with a range of 0.128~0.941(${\Delta}E$) compared to other SCB DC2500G material. In contrast, in the case of SCB EG410, there was a uniform color value with a range of 0.144~0.252(${\Delta}E$). Also, in our experiments, a modified SCB was confirmed by printing ink material as a melt coating paper. It may be possible that the SCB EG410 material can be advantageous as a gravure ink product. Finally, the modified SCB obtained from this research will have a large impact on the industry as a potential material for toners, paint, rubber, fillers, and other carbon black additives.