Development of woven fabric reinforced all-polypropylene composites with beta nucleated homo- and copolymer matrices

Injection moulded all-polypropylene composites composed of polypropylene fibre and polypropylene based thermoplastic elastomer

“…15-20°C difference between the melting temperatures of the matrix and reinforcements can be achieved [22]. In case of all-PP composites usually PP homopolymer reinforcement is combined with a random PP (rPP) copolymer (containing 3…5 wt% ethylene) as matrix in order to ensure the processability (melting temperature difference: ca.…”

Non-destructive characterisation of all-polypropylene composites using small angle X-ray scattering and polarized Raman spectroscopy

“…The effect of processing parameters on the mechanical properties was first presented by Ward and Hine for polyethylene (PE) based composites [11] and by Alcock et al for all-polypropylene composites (all-PPCs) [12,13]. These investigations show that the consolidation quality of all-PPCs improves as a function of increasing processing temperature, as also revealed by tensile, flexural and peel strength, modulus and density measurements by Izer et al [14]. The modulus and strength values pass through a maximum, while the energy absorption capability (perforation energy) decreases with increasing consolidation temperature.…”

Fracture Behavior of Recyclable All-Polypropylene Composites Composed of α- and β-Modifications

“…Based on the results of this investigation and previous results on similar composites [22,38], it can be concluded that the properties of the composites can be tailored for a given application through the quality of consolidation.…”

“…Accordingly, composites behaved as if they were only a-rPP and b-rPP matrices: a-rPP consolidated at 1908C exhibited typical brittle fracture of a-PP, while b-rPP consolidated at 1908C exhibited stable behavior with fully yielded ligament before crack propagation commonly observed for b-rPP. It should be recalled that in the case of composites obtained at high processing temperatures, significant transcrystalline layer was detected along the tapes as studied on thin sections by polarized light microscopy [38]. This transcrystalline layer has grown from the melted surface of the reinforcing tapes.…”