TY - JOUR

T1 - Accelerated ageing of surface modified flax fiber reinforced composites

AU - Vellguth, Natalie

AU - Shamsuyeva, Madina

AU - Endres, Hans Josef

AU - Renz, Franz

N1 - Funding Information: This research was partially funded by the German Federal Ministry of Education and Research, grant number 031B0502 within the scope of the project “DeFiCoat” and partially from own resources.

PY - 2021/10

Y1 - 2021/10

N2 - The overall aim of this study is to evaluate application-oriented potential of biocomposites made of surface-modified flax fibers for use in engineering thermoplastics. The scope of the study includes analysis of the effect of a partially bio-based epoxy-coating, a silane treatment and a combined epoxy-coating / silane treatment of the flax fibers on the mechanical behavior of biocomposites after thermo-oxidative aging. The treated flax fabrics were subjected to tensile tests as well as scanning electron microscopy (SEM) to compare their mechanical behavior and fracture surface. The natural fiber reinforced biocomposites were manufactured through film-stacking of the treated fabrics and polyamide 6 (PA6) using hot-pressing. The durability of the biocomposites after climate-change tests was confirmed via tensile and bending testing. The results show beneficial mechanical behavior of treated fabrics and corresponding biocomposites, but also negative affected durability of treated composites after climate-change tests. Treatment of the fabrics with subsequent accelerated aging leads to a similar low level of tensile and bending moduli.

AB - The overall aim of this study is to evaluate application-oriented potential of biocomposites made of surface-modified flax fibers for use in engineering thermoplastics. The scope of the study includes analysis of the effect of a partially bio-based epoxy-coating, a silane treatment and a combined epoxy-coating / silane treatment of the flax fibers on the mechanical behavior of biocomposites after thermo-oxidative aging. The treated flax fabrics were subjected to tensile tests as well as scanning electron microscopy (SEM) to compare their mechanical behavior and fracture surface. The natural fiber reinforced biocomposites were manufactured through film-stacking of the treated fabrics and polyamide 6 (PA6) using hot-pressing. The durability of the biocomposites after climate-change tests was confirmed via tensile and bending testing. The results show beneficial mechanical behavior of treated fabrics and corresponding biocomposites, but also negative affected durability of treated composites after climate-change tests. Treatment of the fabrics with subsequent accelerated aging leads to a similar low level of tensile and bending moduli.

KW - Biocomposites

KW - Climate chamber

KW - Epoxy coating

KW - Flax fibers

KW - Polyamide

KW - Silane treatment

UR - http://www.scopus.com/inward/record.url?scp=85118478596&partnerID=8YFLogxK

U2 - 10.1016/j.jcomc.2021.100198

DO - 10.1016/j.jcomc.2021.100198

M3 - Article

AN - SCOPUS:85118478596

VL - 6

JO - Composites Part C: Open Access

JF - Composites Part C: Open Access

SN - 2666-6820

M1 - 100198

ER -