- 期刊
- OpenAccess
Mechanical Characterization and Improvement of Weaveability for Glass/Polypropylene Commingled Hybrid Yarns
並列摘要
This study was conducted due to the necessity for improving the processability of commingled yarns during textile processing, in particular dense 3D preform weaving. Open structure of the commingled yarns caused higher production stops. As a possible solution, Glass/Polypropylene (GF/PP) commingled yarns with different twisting levels were produced. Effect of twisting on the mechanical properties of commingled yarns and on their compression molded UD composites are determined. As a result, twisting did not significantly affect the modulus of elasticity of UD-composites. However, the tensile strength of UD-composites was reduced by further processing even without twisting. Therefore small twisting levels can be applied on commingled yarns to improve processability of dense preforms without significantly affecting the mechanical performance. Furthermore, the damage on the yarns, preforms and composites is determined for various weft densities which indicate differing crimp ratios. Higher crimp ratios both increase the damage on reinforcement yarns and significantly decrease the mechanical properties.