Reinforcement of poly(methyl methacrylate) with ultra-high-modulus polyethylene fibre.
A previous study demonstrated that the impact strength of poly(methyl methacrylate) resin can be improved by including randomly distributed 6 mm lengths of untreated ultra-high-modulus polyethylene (UHMPE) fibre. In this study transverse bend and hardness testing of specimens containing 1 or 2 per cent by weight of untreated or plasma-etched UHMPE fibre were carried out, as well as impact testing of specimens containing 0.5, 1, 2 and 3 per cent by weight of plasma-etched UHMPE fibre. Young's modulus and transverse strength were unaffected by the inclusion of fibre, whereas hardness was unaffected at the 1 per cent level but reduced at the 2 per cent level. Impact strength of specimens containing 1 or 2 per cent by weight of plasma-etched UHMPE fibre was not significantly different to that recorded in the previous study of untreated fibre specimens.
Gutteridge
D L
DL
Department of Restorative Dentistry, School of Dentistry, Leeds, UK.
D000180:Acrylic Resins / Q000737:chemistry; D002070:Butadienes / Q000737:chemistry; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D004548:Elasticity; D004563:Electrochemistry; D006244:Hardness; D008422:Materials Testing; D008768:Methylmethacrylates / Q000737:chemistry*; D011095:Polyethylenes / Q000737:chemistry*; D013314:Stress, Mechanical; D020058:Styrene; D013343:Styrenes / Q000737:chemistry; D013499:Surface Properties
D000180:Acrylic Resins; D002070:Butadienes; D008768:Methylmethacrylates; D011095:Polyethylenes; D013343:Styrenes; D020058:Styrene; C029883:Trevalon universal