abstract |
A prepreg assembly comprising resin and fibres and comprising an uppermost curable resin surface layer such that when the assembly is cured, the uppermost surface layer has a sandability of atleast 0.30 mg/cycle over 200cycles, as measured according to ASTM D4060 using a Taber 5151 Abrasion Tester fitted with H18 wheels and a 1.0kg weight is provided. |