Reaction Injection Molding: Polymer Chemistry and Engineering : Based on a Symposium

1985 American Chemical acyllactam adhesion amine anionic polymerization annealing automotive block copolymer caprolactam catalyst Chem cost crosslink density crystalline curves DBTDL decrease dynamic mechanical effect elastomers elongation equation external mold release fibre flexural modulus flow front formulation gate hard segment heat sag higher impact strength impingement mixing IMR agent increase initiator isocyanate Izod ketene kinetics lactam liquid machine material midplane milled fiber milled glass fiber mixing head mold release agents mold temperature molding process molecular weight monomer mould cavity nylon nylon block copolymer nylon RIM PEDA phase separation physical crosslinks physical properties plasticizer polyether polymer polyol polyol blends polyurethane prepolymer pressure production PU-RRIM ratio reactants reaction injection molding reactive reduced reinforcement rigid segments RIM elastomers RIM process RIM systems RRIM samples self-releasing system shear rate shown in Figure Table Tensile thickness typical urethane urethane RIM urethane systems viscosity