| 摘要 |
<p>A method for fracture toughening a resin which is cured by addition polymerization through its double bonds. A fracture toughening agent comprising an esterification product of a very low viscosity hydroxy-terminated polydiene and maleic anhydride is added to the resin. A process for in situ fracture toughening a resin is also disclosed. The cured resins show increased fracture toughness without a reduction in other mechanical properties, chemical resistance or heat distortion temperature.</p> |
