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New Structural RIM Resin Offers Improved Load and Impact Properties
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English
Abstract
A new, low cost, structural reaction injection molding resin has been developed for automotive applications requiring high mechanical strength and impact resistance. Primarily targeted at bumper beam applications, this new resin also displays very good thermal properties which make it a unique candidate for use in assembly sequences requiring high temperature exposures. Thermal and mechanical properties are presented as a function of glass level and glass configuration. At levels of over 50% by weight reinforcement, flexural modulus values of more than 14 GFa (ca. over 2 million psi) and coefficients of linear expansion comparable to steel are achievable. The resin has a unique “snap cure” reactivity profile that permits long shot times while maintaining demold and cycle times to the levels required for low cost targets in automotive components.
Authors
Citation
Schroeder, J., Howell, T., and Camargo, R., "New Structural RIM Resin Offers Improved Load and Impact Properties," SAE Technical Paper 910695, 1991, https://doi.org/10.4271/910695.Also In
References
- Howell T. B. Camargo R. E. Christfreund A. “New Structural RIM Materials For High Performance Automotive Components” Society of Automotive Engineers International Congress and Exposition Detroit, MI Feb. 1990 Paper 900308
- Howell T. B. Camargo R. E. Bityk D. A. “Improving the Processing Characteristics of Structural RIM Systems” Proceedings of the 5th Annual ASM/ESD Advanced Composites Conference and Exposition 69 Dearborn, MI 1989
- General Motors Corporation Materials Standard No. CPM USO44 “SRIM Polycarbamate” CPC Materials and Fastener Engineering Warren, MI 1988
- Carley E. P. Dockeum J. F. Jr. Schell P. L. “Preforming for Liquid Composite Molding” Proceedings of the 5th Annual ASM/ESD Advanced Composites Conference and Exposition 259 Dearborn, MI 1989