Investigation of the adhesive strength in a combined compaction and back-injection process to produce back-injected self-reinforced composites (SRCs)
Author:
Jakob Fabian1, Gothe Marcel1, Gansiniec Fabian1, Heim Hans-Peter1
Affiliation:
1. IfW Plastics Technology, University of Kassel , Kassel , Germany
Abstract
Abstract
This publication investigates the adhesion between an injection molded component and a self-reinforced composite (SRC) produced in a combined compaction and back-injection process to produce back-injected self-reinforced composites. To study the influence of the process, the parameters barrel temperature, time of injection, and tool temperature were varied. In addition, samples were taken at different positions along the flow path. In light of the orthotropic material behavior of SRCs, investigations were conducted to see whether different loading cases lead to different mechanical behavior. Shear-off and pull-off tests revealed a different strength as a function of the loading type. In the shear-off tests, a mean strength of 11.37 MPa was recorded over the entire test series, while the measured mean strength in the pull-off tests is considerably lower, 4.04 MPa. The type of failure is determined with the aid of SEM images, and the influence of the microstructure of the thermoplastic fibre materials on the adhesion is set out. It is shown that, as of a sufficiently high level of adhesion, failure occurs within the fibres.
Publisher
Walter de Gruyter GmbH
Subject
Materials Chemistry,Industrial and Manufacturing Engineering,Polymers and Plastics,General Chemical Engineering
Reference23 articles.
1. Alcock, B. (2004). Single polymer composites based on polypropylene: processing and properties, Doctoral dissertation, Queen Mary University of London, London. 2. Aurrekoetxea, J., Castillo, G., Cortes, F., Sarrionandia, M.A., and Urrutibeascoa, I. (2006). Failure of multimaterial fusion bonding interface generated during over-injection molding/thermoforming hybrid process. J. Appl. Polym. Sci. 102: 261–265, https://doi.org/10.1002/app.23696. 3. Biermann, D., Gausemeier, J., Heim, H.-P., Hess, S., Peters, G., Ries, A., and Wagner, T. (2015). Planning and optimisation of manufacturing process chains for functionally graded components—part 2: case study on self-reinforced thermoplastic composites. Prod. Eng. Res. Devel. 9: 405–416, https://doi.org/10.1007/s11740-015-0610-2. 4. Biermann, D., Gausemeier, J., Heim, H.-P., Hess, S., Petersen, M., Ries, A., and Wagner, T. (2012). Computer-aided planning and optimisation of manufacturing processes for funktional graded components. In: Heim, H.-P., Biermann, D., and Maier, H. (Eds.). 1st International conference on thermo-mechanically graded materials. Verlag Wissenschaftliche Scripten, Auerbach, pp. 195–200. 5. Ehrenstein, G. (1999). Polymerwerkstoffe. Struktur, Eigenschaften, Anwendung, 2nd ed. Hanser, Munich, Vienna.
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