Enhancing the fracture toughness of glass fiber reinforced polyamide 6,6 composites with the addition of chain extender

Karsli, Nevin Gamze

doi:10.1002/pc.23803

Cited by 11 publications

(8 citation statements)

References 34 publications

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“…The 12 mm FL and the resin skin on the fiber surface would result in effective stress transfer between the resin and 12 mm FL under applied stresses. [27][28][29] Furthermore, there is a significant improvement in fiber/resin adhesion, as seen by the absence of voids and debonding. Also, most of the fibers with 12 mm FL had a more particular and regular orientation than those with 3 mm FL in the specimens.…”

Section: Morphological Characterizationmentioning

confidence: 99%

Microstructural analysis and multi‐response optimization of mechanical properties of bulk molding compound

et al. 2021

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In this article, the mechanical properties of commercial bulk molding compounds (BMC) based on the unsaturated polyester resin were maximized by optimizing glass fiber weight (FW) and fiber length (FL). An empirical design was utilized to study the influence of each parameter and its interaction on responses. Accordingly, three levels of FW (10, 15, and 20 wt.%) and FL (3, 6, and 12 mm) were used. A full factorial design was utilized to investigate the effect of each variable and their interaction on all responses. The addition of FW improved all the results except flexibility. In addition, all responses increased except the modulus of composites by increasing FL. The compound with 15 wt.% FW and 12 mm FL was chosen as the best toughness-stiffnessstrength equilibrium among the specimens based on optimization outcomes.In addition, the R 2 obtained from the analysis of variance (ANOVA) and normal probability plots showed good compliance between the empirical results and those anticipated using a full factorial model.

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Section: Morphological Characterizationmentioning

confidence: 99%

Microstructural analysis and multi‐response optimization of mechanical properties of bulk molding compound

et al. 2021

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“…The significant advantages of EWF over J-integral are simplicity of testing, simple preparation, ability to measure failure behavior not only until the crack start but also during the crack propagation period. [29][30][31] The EWF methodology has been used by many researchers to investigate the fracture properties of blend nanocomposites. Haghnegahdar et al [32] indicated that the addition of multi-layer graphene (MLG) and fewlayer graphene (FLG) to the PP/EPDM had a different trend in the EWF but increased the non-EWF for both types.…”

Section: Introductionmentioning

confidence: 99%

“…The significant advantages of EWF over J‐integral are simplicity of testing, simple preparation, ability to measure failure behavior not only until the crack start but also during the crack propagation period. [ 29–31 ]…”

Section: Introductionmentioning

confidence: 99%

Effect of fumed silica and halloysite nanoparticles on the microstructure, mechanical, and fracture properties of thermoplastic polyolefin elastomer toughened polypropylene

et al. 2022

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In this article, mechanical and fracture properties of two types of nanoparticles, namely fumed silica (FS) and halloysite nanotube filled polypropylene (PP) toughened with two types of thermoplastic elastomers (TPOs), namely ethylene-based TPO (ETPO) and propylene-based TPO (PTPO) were investigated. A full factorial design was exploited to clarify the influence of each factor as well as its interaction on outcomes. The essential work of fracture (EWF) approach was utilized to study the effect of each factor on fracture behavior. The addition of TPO enhanced the elongation at break and non-EWF by 62% and 40%, in turn. In addition, the tensile strength, modulus, and EWF increased by 8%, 34%, and 7%, respectively, by increasing the nanoparticles up to 1 wt%. The blend nanocomposite with 10 wt% of PTPO and 1 wt% of FS was selected as the best stiffnesstoughness-strength equivalence based on optimization results. Additionally, the R 2 extracted from the analysis of variance (ANOVA) and plots of normal probability indicated good agreement between the experimental data and for foreseen one using full factorial models.

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“…[34][35][36][37] In addition, Amino-silicate is used as a chain extender to improve the interfacial adhesion between glass fiber and the PA612 matrix. 38 It is known from the literature that GFreinforced PA612-based composites are applied in many applications as key components requiring wear resistance, such as journal bearings, gears, cams, and rolling bearings. 21 This case is because, during the sliding process, the PA612 composite material can form a uniform and thin transfer film.…”

Section: Introductionmentioning

confidence: 99%

Improvement of mechanical and wear resistance property by varying glass fiber contents and amino-silicate coupling agents on polyamide 612 composites

Yeh

Chen

Ranganathan

et al. 2022

Journal of Composite Materials

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Among the polyamide series polymer materials, PA612 has excellent mechanical properties and low moisture absorption characteristics. This work studied the effect of coupling agent addition on the crystallization behavior, adhesive wear, mechanical, thermal, and morphological attributes of glass fiber (GF) reinforced PA612 composites. Amino-silane was applied as a coupling agent to enhance the interfacial adhesion between glass fiber and the PA612 matrix. The loading level of the coupling agent was changed to 0.5, 1.0, and 2.0wt%, while the GF loading level in the composite material was 10, 15, 20, and 30wt%. The composite materials were analyzed via X-ray diffraction, tribological characterization, and adhesion wear test. The mechanical, rheological, and thermal properties were also investigated. In addition, scanning electron microscopy (SEM) analysis was used to study the analytical samples’ wear and fracture surfaces. Test results unveiled that adding 1.0wt% amino-silane coupling agent upgraded the fiber-matrix adhesion, mechanical properties (tensile strength:136 MPa), and corresponding wear resistance of GF reinforced PA612-based composites. Furthermore, it is compatible with pure PA612 substrates and has similar processing rheological behavior. These results reveal that the compiled PA612 matrix is highly viable for tribological applications comprising automotive parts, bearings, and bearing materials for space applications.

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Enhancing the fracture toughness of glass fiber reinforced polyamide 6,6 composites with the addition of chain extender

Cited by 11 publications

References 34 publications

Microstructural analysis and multi‐response optimization of mechanical properties of bulk molding compound

Microstructural analysis and multi‐response optimization of mechanical properties of bulk molding compound

Effect of fumed silica and halloysite nanoparticles on the microstructure, mechanical, and fracture properties of thermoplastic polyolefin elastomer toughened polypropylene

Improvement of mechanical and wear resistance property by varying glass fiber contents and amino-silicate coupling agents on polyamide 612 composites

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