Crosslinked Continuous Glass Fiber‐Reinforced Toughened Polypropylene Composites

Abstract

The authors prepared crosslinkable toughened polypropylene to be used for simultaneous spinning of hybrid yarn and the preparation of continuous glass fiber-reinforced polypropylene composites by filament winding to be consolidated by compression molding. A subsequent electron treatment aims on crosslinking of matrix as well as enhancement of interfacial adhesion in the interphase of glass fiberreinforced polypropylene composites. The authors evaluate the crosslinking behavior as well as the tensile properties of crosslinkable toughened polypropylene. Finally, the authors use transverse tensile test and single fiber pull-out test in order to study the effect of matrix modification and electron treatment on continuous glass fiber-reinforced polypropylene composites as well as on single glass fiber polypropylene model microcomposites.

Enhanced Interfacial Shear Strength and Critical Energy Release Rate in Single Glass Fiber-Crosslinked Polypropylene Model Microcomposites

“…In accordance with References [23,24,25], we used PP HG455FB (93.5 ma %), ethylene octene copolymer (Engage 8100, 2.5 ma %), maleic anhydride-grafted PP (MAH-g-PP: Exxelor PO1020, 2 ma %), and a crosslinking agent (trimethylolpropane triacrylate (TMPTA), 2.0 ma %) in order to prepare melt-spinnable and crosslinkable tPP by EIReP. It was used as matrix material for the preparation of single E-glass fiber–PP model microcomposites for the pull-out test.…”

“…In Reference [21], crosslinkable toughened PP (tPP) was produced by electron-induced reactive processing (EIReP) and was comprehensively tested with respect to mechanical performance [22] and melt spinnability [23,24]. In Reference [25], tPP and amino-sized single GFs were used for the preparation of single GF-reinforced tPP model microcomposites. After their EB treatment, a slightly enhanced interfacial adhesion and critical energy release rate were observed by analyzing the force-displacement curves of the single fiber pull-out test.…”

“…In Reference [26], EB curing was successfully applied to enhance the mechanical properties of carbon fiber acrylate composites. Based on References [23,24,25,26], this study was aimed at the impact of melt-spinnable crosslinkable tPP, alkylene-functionalized single GFs, and EB-induced chemical changes of interface_2 and matrix on the local interfacial shear strength (IFSS) and critical energy release rate ( G ic ) in single GF–PP model microcomposites. Altogether, single GF-reinforced PP model microcomposites were prepared and tested using four types of GF surface (non-, amino-, alkyl-, and alkylene-functionalized GF) and three types of PP (noncrosslinked PP, crosslinkable tPP, and crosslinked tPP) in order to systematically study the influence of GF functionalization (interface_1), adhesion promoter-to-matrix coupling (interface_2), and matrix crosslinking (interphase), separately.…”

Morphology, thermal behavior, rheological, and mechanical properties of polypropylene/polystyrene blends based on elongation flow

“…However, the toughness and stiffness of PP are not adequate for application as an engineering plastic. In order to improve the properties of PP, a lot of inorganic fillers and rigid polymers have been used to prepare modified PP composites or blends 4‐7 . As a kind of rigid polymer, PS, with low cost, has been widely used for modifying PP to prepare PP/PS bends or its composites in recent years 8 .…”

Novel Hybrid Yarn Textile Thermoplastic Composites for Function‐Integrating Multi‐Material Lightweight Design

“…This complex, large‐scale piece of bodywork is characterized by the integration of a chassis connection system, all structural functions, an embedded sensor system, and the outer skin of the vehicle. This is made feasible by the use of a complex HYTT preform made partly of near net‐shaped 3D fabrics whose fibers are adapted to the respective loading paths (e.g., those to which the wheelhouses are subjected) . Furthermore, the integration of near net‐shaped shell stringer fabrics ensures the fulfilment of structural criteria while also minimizing weight as described in Mountasir et al Extensive research into the dimensioning of HYTT structures was therefore carried out, thus facilitating the use of novel damage models for HYTT composites to describe complex, non‐linear structural behavior under static and dynamic loading .…”