Skip to main content
SpringerLink
Log in

Introduction of KRI’s sol–gel technologies with reference to the shape classification of the materials

  • Original Paper: Industrial and technological applications of sol-gel and hybrid materials
  • Published:
Journal of Sol-Gel Science and Technology Aims and scope Submit manuscript

Abstract

KRI has been successful in conducting many sol–gel related projects. In this article, we review KRI’s sol–gel projects that fall into the following four categories: zero dimensions (particle applications), one dimension (fiber applications), two dimensions (coating applications), and three dimensions (bulk applications). (1) Zero dimensions: at KRI, we have developed a new process to not only synthesize large-sized (over 10 µm) silica particles by using a microreactor device, but also synthesize core–shell particles that eliminate the photocatalytic effect of TiO2. (2) One dimension: KRI has developed the electrospinning deposition method which is a process used to form nanofibers by discharging raw material liquid from a syringe under high voltage. We have successfully formed polysilsesquioxane (PSQ) nanofibers for application in Li batteries as separators, as well as metal oxide nanofibers such as TiO2 and ZnO. (3) Two dimensions: KRI has developed organic–inorganic hybrid hard coatings. Recently, we have focused on PSQ materials for hydrophobic coatings and hydrophilic coatings. (4) Three dimensions: we have successfully developed large-sized silica glasses as well as organic–inorganic hybrids as transparent materials for bulk applications.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7
Fig. 8
Fig. 9
Fig. 10
Fig. 11
Fig. 12
Fig. 13

Similar content being viewed by others

References

  1. Stöber W, Fink A, Bohn E (1968) Controlled growth of monodisperse silica spheres in the micron size range. J Colloid Interface Sci 26:62–69

    Article  Google Scholar 

  2. Adachi T (2006) Silica microparticles used for LCD spacer. Hyoumen Gijutu 57(6):396

    Google Scholar 

  3. M. Toki (1993) Production method of silica particles. JPA 1993-254822

  4. Toki M (2001) Micro size structure and production process. JPA 2001-64009

  5. Fujii Y (2009) Silica gel and its production process. JPA 2009-286645

  6. Toki M (2007) Multi-oxide particles and its production method. JPA 2007-22827

  7. Obayashi T, Suzuki R, Mochizuki H, Aiki Y (2013) Development of thermoplastic Nanocomposite optical materials. Fujifilm Res Dev 58:48–51

    Google Scholar 

  8. Toki M (1994) Film-forming composition based on the hybrid. JPA-1994-001953

  9. Toki M (1996) Film-forming composition for hardcoat. JPA-1996-337753

  10. Higuchi S (2005) Flexible substrate and coating material. JPWO 2005/047200

  11. Fujino S (2005) Fabrication of high-purity transparent silica glass by powder sintering method. New Glass 20(1):19–24

    Google Scholar 

  12. Toki M (1989) Synthesis process of silica glass. JP 1989-3811

  13. Mataki H (2007) Optical material with high refractive index and high abbe number. JPA_2007-178921

Download references

Author information

Authors and Affiliations

  1. KRI Inc., Kyoto Research Park, 134, Chudoji Minami-machi, Shimogyo-ku, Kyoto, 600-8813, Japan

    Motoyuki Toki

Authors
  1. Motoyuki Toki
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Motoyuki Toki.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Toki, M. Introduction of KRI’s sol–gel technologies with reference to the shape classification of the materials. J Sol-Gel Sci Technol 79, 366–373 (2016). https://doi.org/10.1007/s10971-015-3930-y

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s10971-015-3930-y

Keywords

Search

Navigation