TY - JOUR
T1 - An experimental study of glass fibre roving sizings and yarn finishes in high-performance GF-PA6 and GF-PPS composite laminates
AU - Kiss, Peter
AU - Schoefer, Joachim
AU - Stadlbauer, Wolfgang
AU - Burgstaller, Christoph
AU - Archodoulaki, Vasiliki Maria
N1 - Funding Information:
The authors are grateful to the State Government of Upper Austria and the European Regional Development Fund for providing financial support for this research in the programme EFRE-IWB 2020 for the project: “ProFVK”.
Funding Information:
We would like to offer our special thanks to GIVIDI Fabrics S.r.l, LITE GmbH, BASF SE and Johns Manville Slovakia a.s. for providing their materials for research purposes. Permission for publishing the mechanical property data is also gratefully acknowledged. The authors are grateful to the State Government of Upper Austria and the European Regional Development Fund for providing financial support for this research in the programme EFRE-IWB 2020 for the project: “ProFVK”.
Publisher Copyright:
© 2020 Elsevier Ltd
PY - 2021/1/1
Y1 - 2021/1/1
N2 - In the present study a range of glass fibre (GF) coatings (roving sizings and yarn finishes) were investigated for the manufacture of high-performance composite laminates based on Polyamide 6 (PA6) and Polyphenylene Sulfide (PPS) matrices. Matrix compatibility and resulting composite performance of press-consolidated laminates was evaluated by macro-mechanical testing on the basis of 3-point flexural and short-beam-shear tests. Among the tested yarn finishes, γ-aminopropyltriethoxysilane (A-1100 aminosilane yarn finish) and chromium(III)methacrylate (Volan®A chromium yarn finish) stood out as highly efficient adhesion promoters for both PA6 and PPS. Flexural strength properties of laminates prepared from finished yarn fabrics (up to 770 MPa) surpassed industrial grade laminates. A GF-epoxy laminate yielded lower flexural strength (570 MPa) compared to the GF-PPS laminates at an identical fibre volume fraction of 56%. These findings exemplified that neat PA6 and PPS matrices require no further chemical modification, i.e. adhesion and resulting composite strength can be tailored most efficiently by fibre coating adaptation. SEM imaging further verified that PA6 and PPS polymers adhere strongly to specific glass fibre coatings. In contrast, laminates made from desized (uncoated) fabrics exhibited interfacial debonding, and hence the lowest laminate performance throughout. Additional compression, and compression after impact tests (50 J impact) revealed that laminates made from sized or finished fabrics boast superior impact attenuation when compared to their desized fabric counterparts.
AB - In the present study a range of glass fibre (GF) coatings (roving sizings and yarn finishes) were investigated for the manufacture of high-performance composite laminates based on Polyamide 6 (PA6) and Polyphenylene Sulfide (PPS) matrices. Matrix compatibility and resulting composite performance of press-consolidated laminates was evaluated by macro-mechanical testing on the basis of 3-point flexural and short-beam-shear tests. Among the tested yarn finishes, γ-aminopropyltriethoxysilane (A-1100 aminosilane yarn finish) and chromium(III)methacrylate (Volan®A chromium yarn finish) stood out as highly efficient adhesion promoters for both PA6 and PPS. Flexural strength properties of laminates prepared from finished yarn fabrics (up to 770 MPa) surpassed industrial grade laminates. A GF-epoxy laminate yielded lower flexural strength (570 MPa) compared to the GF-PPS laminates at an identical fibre volume fraction of 56%. These findings exemplified that neat PA6 and PPS matrices require no further chemical modification, i.e. adhesion and resulting composite strength can be tailored most efficiently by fibre coating adaptation. SEM imaging further verified that PA6 and PPS polymers adhere strongly to specific glass fibre coatings. In contrast, laminates made from desized (uncoated) fabrics exhibited interfacial debonding, and hence the lowest laminate performance throughout. Additional compression, and compression after impact tests (50 J impact) revealed that laminates made from sized or finished fabrics boast superior impact attenuation when compared to their desized fabric counterparts.
KW - A. Glass fibres
KW - B. Adhesion
KW - D. Mechanical testing
KW - E. Thermoplastic resin
UR - http://www.scopus.com/inward/record.url?scp=85094317292&partnerID=8YFLogxK
U2 - 10.1016/j.compositesb.2020.108487
DO - 10.1016/j.compositesb.2020.108487
M3 - Article
AN - SCOPUS:85094317292
SN - 1359-8368
VL - 204
JO - Composites Part B: Engineering
JF - Composites Part B: Engineering
M1 - 108487
ER -