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- W1977890519 abstract "Purpose The paper's aim is to synthesise ultraviolet (UV) curable polyurethane acrylate based on polyester polyol and to study change in its mechanical, chemical, optical and weather resistance properties with varying amount of nanosilica. It also seeks to determine its optimum loading levels for property maximisation. Design/methodology/approach New UV curable polyurethane acrylate has been synthesised using polyester polyol, blend of isophorone diisocyanate and toluene diisocyanate and hydroxyl ethyl acrylate. This resin was incorporated with nanosilica (1‐3 per cent) on the basis of total solids. The newly synthesised material was characterised by fourier transform infrared spectroscopy, gel permeation chromatography, X‐ray diffraction and scanning electron microscopy. The mechanical, chemical and optical properties of the coating films were studied and compared. Findings The hardness, tensile strength and abrasion resistance show significant enhancement with increasing amount of nanosilica. It is also found that UV cured polyurethane acrylate nanocoating exhibited improved weather resistance. The optimum concentration of nanosilica for better performance is found to be 3 per cent of total solids. The improvement is the result of inherent nature of nanosilica. Research limitations/implications Nanosilica used in present context is having 10 nm mean diameter and near about 600 m 2 /g surface area. Nanosilica having different particle size, surface area and surface modification can be used to improve more specific properties. Practical implications Addition of nanosilica particles to polyurethane acrylate coating is a simple and inexpensive method resulting in phenomenal increase in properties. Originality/value The new organic‐inorganic hybrid nanocoating with improved weather resistance was synthesised. These coatings could find applications in demanding fields such as automotive topcoats." @default.
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- W1977890519 date "2010-09-14" @default.
- W1977890519 modified "2023-10-16" @default.
- W1977890519 title "UV curable polyester‐based polyurethane acrylate nanocoating" @default.
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- W1977890519 doi "https://doi.org/10.1108/03699421011076371" @default.
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