Determination of Molding Parameter Effects on the Physical Properties of a Carbon Powder Filled, Impact Modified Acetal Copolymer

2011-01-0250

04/12/2011

Event
SAE 2011 World Congress & Exhibition
Authors Abstract
Content
Polyacetals have high strength, modulus, and chemical resistance with good dimensional stability. Because of these properties, they are used in a number of automotive applications. The injection molding process used for the molding of these components is complex and requires the adjustment of multiple process parameters to produce parts. Typically, physical tests are used to confirm that tensile strength is achieved in processing. A study was undertaken with an impact modified carbon powder filled, acetal copolymer to determine the effect of variation in process parameters on other material properties in addition to tensile strength. These material properties were measured dry as-molded and after exposure to heat and to a test fluid. It was determined that in the case of this specific polymer, the barrel temperature, and to a lesser extent the cooling time during processing, affected the strain at break. It was also discovered that tensile strength or elastic modulus did not vary significantly over the range of processing parameters investigated.
Meta TagsDetails
DOI
https://doi.org/10.4271/2011-01-0250
Pages
6
Citation
Novaco, R., Bartnick, B., Rodgers, W., Hart, M. et al., "Determination of Molding Parameter Effects on the Physical Properties of a Carbon Powder Filled, Impact Modified Acetal Copolymer," SAE Technical Paper 2011-01-0250, 2011, https://doi.org/10.4271/2011-01-0250.
Additional Details
Publisher
Published
Apr 12, 2011
Product Code
2011-01-0250
Content Type
Technical Paper
Language
English