Surface energy determination of fibres for Liquid Composite Moulding processes: Method to estimate equilibrium contact angles from static and quasi-static data

Interest in eco-composites incorporating elements from recycling is growing to reduce the carbon footprint of final products. Therefore, characterisation surface properties recycled fibres first importance. However, order maximise service and facilitate their development, chemical treatments can be made improve compatibility with resins. For a better understanding behaviour these new reinforcements during Liquid Composite Moulding processes (LCM), analysis wetting are studied. this type analysis, using Owens Wendt relation based on tensiometric methods, requires special procedures, specifically for estimation contact angle. Based two basalt different sizing characterised approach, able address materials further studies. The main contribution study evaluate error energy its components determination associated measurement an alleged equilibrium angle deriving static or quasi-static data.