The emergence of reaction injection molding (RIM) has been fol lowed by the industry with mounting interest. RIM technology has brought to polymer processing a new flexibility and savings in both energy and capital investment. The new developments and the number of engineers and scientists working in RIM is growing at so fast a rate that there is need for sharing information on progress in this area. This book is based on papers presented at the International Symposium on Reaction Injection Molding which was held in 1981 in Atlanta, Georgia, and was sponsored by the American Chemical Society, Division of Organic Coatings and Plastics Chemistry. The book is divided into four parts covering different areas of RIM development. The first part is devoted to the future trends of RIM develop ment in the United States and Japan. The structure-properties relationship and effects of annealing on properties of RIM elastomers are covered in the second part. New non-urethane polymers such as polyamides, polyisocyanurates and polystyrene suitable for RIM processing are discussed in the third part. In the last part the engineering and technological aspects of RIM, such as glass reinforcement, mixing, flow and moldability are covered in detail. Finally I would like to thank Mrs. Iris Glebe for typing this book and for help with editing, and K. Zielinski for his assistance v vi PREFACE in reviewing and, when necessary, correcting some of the papers. Thanks is also due to the editors of Plenum for their patience and helpfulness.
Table of ContentsI. Development of RIM in the U.S.A. and Japan.- Future of RIM Development in the U.S.A. in the 1980’s.- RIM and RRIM Development in Japan.- II. Polyurethane RIM Systems Structure/Properties Relationship.- Studies of the Formation and Properties of Polyurethanes Suitable for RIM.- RIM Urethanes Structure/Property Relationships for Linear Polymers.- The Effect of Hard Segment Content on a Cross-linked Polyurethane RIM System.- The Effect of Annealing on the Thermal Properties of RIM Urethane Elastomers.- Experimental Studies of Phase Separation in Reaction Injection Molded (RIM) Polyurethanes.- Graft Polyol RIM Systems: Thermal Stability and Moisture Absorption.- III. Non-Urethane RIM Systems.- Polyamide RIM Systems.- The Catalysis of the Polycyclotrimerization of Isocyanates by Quaternary Ammonium Carboxylates.- High Modulus Isocyanurate-Urethane RIM Elastomers.- Potential of Crown Ether-Assisted Anionic Polymerization of Styrene and Dienes for Commercial Processes.- IV. RIM Engineering and Technology.- Recent Chemical and Reinforcement Development in the Reinforced RIM Process for Automobile Applications.- Fiber Glass Reinforced Reaction Injection Molding.- Refining of the RRIM Process, Materials and Equipment in the Automotive Industry.- Metering and Mixing of RIM Reactants.- Simulation of Cavity Filling and Curing in RIM.- Computer Analysis of RIM Moldability from the Density Distribution in Molded Products.