Effects of pre-strain applied at a polyethylene terephthalate substrate before the coating of TiO2 film on the coating film quality and optical performance

Tse Chang Li, Bo Hsiung Wu, Jen Fin Lin

研究成果: Article同行評審

11 引文 斯高帕斯(Scopus)

摘要

A mold was designed to create various strains in polyethylene terephthalate (PET) substrates before the deposition of TiO2 film to simulate deposition process on a cylindrical drum. The residual stress of the PET substrate with TiO2 film significantly increased with increasing strain, decreasing the radius of curvature. Compared to the as-received PET substrate, there was a noticeable increase in the surface roughness in the PET/TiO2 specimens when a large strain was applied. The formation of voids or cavities in the TiO2 layer significantly increased the roughness of the specimen. The mean cavity size and depth increased with increasing strain. For strains ≤ 4%, the specimen's hardness and Young's modulus factored by the voids/cavities increased with increasing surface roughness. The optical absorption increased with increasing surface roughness before becoming asymptotic to a constant value. The strain applied to the PET substrate before TiO2 deposition greatly affects the optical reflection, transmittance, and absorption.

原文English
頁(從 - 到)7875-7882
頁數8
期刊Thin Solid Films
519
發行號22
DOIs
出版狀態Published - 2011 九月 1

All Science Journal Classification (ASJC) codes

  • 電子、光磁材料
  • 表面和介面
  • 表面、塗料和薄膜
  • 金屬和合金
  • 材料化學

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