This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Performance Consistency and Recyclability of Injection Molded Thermoplastic Bumpers
Annotation ability available
Sector:
Language:
English
Abstract
A study was conducted to evaluate the effects of using post-processor polymer regrind on the impact performance of an injection molded thermoplastic bumper. An unfilled, impact-modified polycarbonate/polybutylene terephthalate (PC/PBT) alloy was evaluated because this material is widely used in the automotive industry in bumper applications - making regrind material readily accessible - and because it displays excellent impact resistance at both room and low temperatures. Samples of 100% regrind and 100% virgin polymer were injection molded separately in a prototype bumper tool.
The molded parts (designated as virgin or regrind) were then tested according to Federal Motor Vehicle Safety Standard (FMVSS) 581. Only barrier impact tests were conducted. Impacts were conducted at speeds of approximately 8 km/h (5 mi/h). Half of the virgin and regrind bumpers were tested at room temperature (22C/77F), and the balance were tested at approximately -30C (-22F). Test results were then collected and examined for differences in deflection, impact load, and performance consistency. Preliminary results from this study are discussed here.
Authors
Citation
Lee, W., "Performance Consistency and Recyclability of Injection Molded Thermoplastic Bumpers," SAE Technical Paper 941026, 1994, https://doi.org/10.4271/941026.Also In
References
- Federal Motor Vehicle Safety Standard 581: Bumper Standard - Passenger Motor Vehicles Other Than Multipurpose Passenger Vehicles Department of Transportation, U.S. Government May 4 1977
- “Semi-Finished Plastics from Recyclate,” Automotive Engineering 18 3 June July 1993 465
- “Making Recycled Just Another Grade,” Bujtas G.W. Machine Design 65 11 June 11 1993 122
- “Influence of Reclaim on Material Properties,” August H. Salewski D. Plastverarbeiter 42 2 Feb. 1991 37 39
- “Recycled Engineering Plastics and Automobile Production,” Schult J.H. Strategies for Engineering Thermoplastics Conference Proceedings Brussels June 29-30 1992 Paper 4.63E
- “Availability and Processability of Recycled Thermoplastic,” Bowes G.S. Proceedings of the Society of Plastics Engineers (SPE) 1991 Annual Technical Conference (ANTEC) 37 SPE, Brookfield Center, Conn. May 5-9 1991 2,556 2,557
- “Tensile and Impact Properties of Recycled PET/HDPE Blends,” Yam K.L. Nichols K. L. Selke S.E. Proceedings of the Society of Plastics Engineers (SPE) Regional Technical Conference (RETEC): Plastics Disposal and Recycling SPE-Philadelphia Section, Philadelphia March 9-10 1988 77 88
- “Recycling Plastics: An Opportunity,” Keeler J. H. Journal of Packaging Technology 2 1 Feb. 1988 4 6
- “Recyclability of PC/PBT Blend from Post-Consumer Automotive Bumpers,” Tao W.H. Goloroy A. Zimbo M. Bauer T.R. Proceedings of the Society of Plastics Engineers (SPE) 1993 Annual Technical Conference (ANTEC) Paper #3427 SPE, Brookfield Center, Conn. 1993
- “Auto Parts May Use Recycled Packaging,” Plastics News 5 4 March 22 1993 13