Study the Effect of Coating Thickness from Silica Nanocomposite Deposited on Poly(Methyl Methacrylate) Sheets via Spray Coating Technique

Taksorn Jirathampradhab; Siraprapa Lhosupasirirat; Pisist Kumnorkaew; Thananan Akhadejdamrong; Pichet Rojanapitayakorn; Toemsak Srikhirin

doi:10.4028/www.scientific.net/MSF.895.79

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HomeMaterials Science ForumMaterials Science Forum Vol. 895Study the Effect of Coating Thickness from Silica...

Study the Effect of Coating Thickness from Silica Nanocomposite Deposited on Poly(Methyl Methacrylate) Sheets via Spray Coating Technique

Abstract:

The development of hard coating based on colloidal silica nanoparticles on polymethyl methacrylate (PMMA) sheet was reported. The colloidal silica was surface-modified with methyltrimethoxysilane (MTMS) and formulated to hard coating solution via sol-gel process. The hard coating solution was applied to PMMA surface by spray deposition technique. Spraying process was carried out from spray nozzle outlet diameter of 0.35 mm and air compress pressure at 0.2 MPa with nozzle to substrate distance at 10 cm. The different coating thicknesses were obtained by adjusting the amount of coating applied. The optimal coating thickness that gives the highest pencil-hardness at 7H and 100% adhesion for adhesion tape test is 10 μm.

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Periodical:

Materials Science Forum (Volume 895)

Pages:

79-82

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.895.79

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Online since:

March 2017

Authors:

Taksorn Jirathampradhab, Siraprapa Lhosupasirirat, Pisist Kumnorkaew, Thananan Akhadejdamrong, Pichet Rojanapitayakorn, Toemsak Srikhirin

Keywords:

Coating Thickness, Hard Coat, Silica Nanocomposite, Sol-Gel Process, Spray Deposition

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