PMID- 32443909 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20200928 IS - 1996-1944 (Print) IS - 1996-1944 (Electronic) IS - 1996-1944 (Linking) VI - 13 IP - 10 DP - 2020 May 20 TI - A Design of Experiment Approach for Surface Roughness Comparisons of Foam Injection-Moulding Methods. LID - 10.3390/ma13102358 [doi] LID - 2358 AB - The pursuit of polymer parts produced through foam injection moulding (FIM) that have a comparable surface roughness to conventionally processed components are of major relevance to expand the application of FIM. Within this study, 22% talc-filled copolymer polypropylene (PP) parts were produced through FIM using both a physical and chemical blowing agent. A design of experiments (DoE) was performed whereby the processing parameters of mould temperatures, injection speeds, back-pressure, melt temperature and holding time were varied to determine their effect on surface roughness, Young's modulus and tensile strength. The results showed that mechanical performance can be improved when processing with higher mould temperatures and longer holding times. Also, it was observed that when utilising chemical foaming agents (CBA) at low-pressure, surface roughness comparable to that obtained from conventionally processed components can be achieved. This research demonstrates the potential of FIM to expand to applications whereby weight saving can be achieved without introducing surface defects, which has previously been witnessed within FIM. FAU - Llewelyn, Gethin AU - Llewelyn G AUID- ORCID: 0000-0003-3220-4270 AD - College of Engineering, Swansea University, Swansea, Wales SA1 8EN, UK. FAU - Rees, Andrew AU - Rees A AUID- ORCID: 0000-0003-0455-5444 AD - College of Engineering, Swansea University, Swansea, Wales SA1 8EN, UK. FAU - Griffiths, Christian AU - Griffiths C AD - College of Engineering, Swansea University, Swansea, Wales SA1 8EN, UK. FAU - Jacobi, Martin AU - Jacobi M AD - Trexel GmbH, Ahlefelderstr. 64, D-51645 Gummersbach, Germany. LA - eng GR - */Engineering and Physical Sciences Research Council/ GR - */Welsh European Funding Office (WEFO)/ PT - Journal Article DEP - 20200520 PL - Switzerland TA - Materials (Basel) JT - Materials (Basel, Switzerland) JID - 101555929 PMC - PMC7287706 OTO - NOTNLM OT - Foam Injection Moulding OT - MuCell(R) OT - Polypropylene OT - Talc OT - TecoCell(R) COIS- The authors declare no conflict of interest. EDAT- 2020/05/24 06:00 MHDA- 2020/05/24 06:01 PMCR- 2020/05/20 CRDT- 2020/05/24 06:00 PHST- 2020/04/28 00:00 [received] PHST- 2020/05/15 00:00 [revised] PHST- 2020/05/19 00:00 [accepted] PHST- 2020/05/24 06:00 [entrez] PHST- 2020/05/24 06:00 [pubmed] PHST- 2020/05/24 06:01 [medline] PHST- 2020/05/20 00:00 [pmc-release] AID - ma13102358 [pii] AID - materials-13-02358 [pii] AID - 10.3390/ma13102358 [doi] PST - epublish SO - Materials (Basel). 2020 May 20;13(10):2358. doi: 10.3390/ma13102358.