Acta Phys. -Chim. Sin. ›› 2002, Vol. 18 ›› Issue (04): 355-358.doi: 10.3866/PKU.WHXB20020414

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Synthesis and Properties of Hydrophobic & Antireflective Silica Coating

Zhang Ye;Wu Dong;Sun Yu-Han;Peng Shao-Yi   

  1. State Key Laboratory of Coal Conversation, Institute of Coal Chemistry,Chinese Academy of Sciences, Taiyuan 030001
  • Received:2001-08-03 Revised:2001-11-14 Published:2002-04-15
  • Contact: Sun Yu-Han

Abstract: Organic methylmodified silica sols were obtained by Hydrolysis and cocondensation reactions occurred in basecatalyzed system by carefully controlling the solgel process of DDS and TEOS. Both hydrophobic and antireflective silica coating was then prepared by spincoating technique from the modified sols. As a result, the moistureresistant ability of antireflective coating was highly improved. The properties of somodified sols and their effects on the coating were studied using transmission electron micrograph(TEM) and size distribution of particles(SDP) measurements. In addition, comparison was carried out between organically modified and pure silica coating and the results showed that not only the hydrophobicity of the coating was greatly improved by the modification but also the transmittance curve not easily showed multipeaks in the wavelength range of 300~800 nm.

Key words: Hydrophobic & antireflective, Silica coating, Sol-gel, TEOS-DDS, Spincoating