Deposition of thick polymer or inorganic layers with flame-retardant properties by combination of plasma and spray processes
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- 作者：Zeinab R. Farag ; Simone Krü ; ger ; Gundula Hidde ; Arnd Schimanski1 ; Christian Jä ; ger ; Jö ; rg Friedrich
- 关键词：Plasma polymerization ; Hexamethyldisiloxane plasma polymer ; Polystyrene ; Polyethylene ; Flame retardancy
- 刊名：Surface and Coatings Technology
- 出版年：2013
- 出版时间：15 August, 2013
- 年：2013
- 卷：228
- 期：Complete
- 页码：266-274
- 全文大小：1243 K
文摘
Mixtures of hexamethyldisiloxane (HMDSO) and oxygen have been used for deposition of SiO2-like layers by plasma polymerization under low-pressure conditions onto polyethylene and polystyrene used as basecoat. Water glass was cast onto these 0.5 ¦Ìm plasma thick siloxane-like layers with a thickness of 5 to 40 ¦Ìm. The adhesion of these bilayer systems and their flame resistance were tested.
The effect of different plasma parameters such as monomer/gas ratio, pressure and power input into the discharge on the deposition rate and the composition of the formed layers was studied. Characterization and chemical composition of the formed films were performed using infrared, X-ray photoelectron and solid state nuclear magnetic resonance spectroscopy.
Peel strengths of composites were measured and the locus of peel front propagation was detected. Thermal properties of composites were analyzed by thermo-gravimetric analysis. Finally, the fire-retardant properties of thick coated polymers were determined by exposure to flames and the behavior of coatings on the polymers during flaming was observed visually.