Mechanical and structural properties of glass fiber‐reinforced polypropylene (PPGF) composites

Kallel, Tasnim; Taktak, Rym; Guermazi, Noamen; Mnif, Nizar

doi:10.1002/pc.24369

Cited by 42 publications

(32 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…GF shows strengthening capabilities 3.1 and 4.1 times higher than ONPF when reinforcing the same matrix. The difference is mainly due to the intrinsic properties of GF, much higher than those of natural fibers, and to the regularity of a man-made reinforcement [38,39]. Regarding the rest of the composites, the value of ONPF was found to be inferior to SGW, despite the matrix.…”

Section: Resultsmentioning

confidence: 99%

Flexural Properties and Mean Intrinsic Flexural Strength of Old Newspaper Reinforced Polypropylene Composites

et al. 2019

View full text Add to dashboard Cite

Newspapers have a limited lifespan, and therefore represent a focus of used and disposed paper. While these refuses have a considerable value and can be easily recycled, a considerable fraction ends in landfill. The authors show the possibility of adding value to used newspaper and enlarge its value chain. Old newspaper incorporates a high amount of wood fibers able to be used as reinforcement. On the other hand, this material also incorporates inks and other components inherent to newspaper production. In this work, the authors disintegrate old newspaper to recover and individualize wood fibers. A morphological analysis showed that the recovered fibers had aspect ratios higher than 10, revealing, a priori, their strengthening capabilities. Thereupon, these fibers were compounded with polypropylene at different contents, ranging from 20% to 50% w/w. It is well known that wood fibers are hydrophilic, while polyolefin are hydrophobic. This is a drawback to obtaining strong interfaces. Thus, two sets of composites were produced, with and without a coupling agent. The results showed that uncoupled composites increased the flexural strength of the matrix but reached an equilibrium point from which adding more reinforcement did not changer the flexural strength. On the other hand, the coupled composites showed a linear increase of the flexural strength against the reinforcement content. The flexural moduli of the coupled and uncoupled composites were very similar and evolved linearly with the reinforcement content.

show abstract

Section: Resultsmentioning

confidence: 99%

Flexural Properties and Mean Intrinsic Flexural Strength of Old Newspaper Reinforced Polypropylene Composites

et al. 2019

View full text Add to dashboard Cite

show abstract

“…A relatively similar value was reported in the literature for the critical length of glass fiber in different PP matrices and polyamide 6,6. [15,26,30] Accordingly, the values of average fiber length in the TPO composites are lower than the critical fiber length, implying that the stress transfer from the matrix to the fibers is not efficient, especially for those processed at 400 rpm. Tensile properties of the neat TPO matrix and the composites are presented in Figure 4.…”

Section: F I G U R E 3 Glass Fiber Length Dispersion For Thermoplastimentioning

confidence: 99%

“…To address high production speeds while reducing fiber attrition, it is vital to understand processing limitations and optimize parameters that determine both productivity and final performance of the reinforced composite parts. [20][21][22][23][24][25][26][27] In this work, elastomer toughening and fiber reinforcement are combined to study the trade-off between strength and toughness in TPO composites, which has received little attention in the literature. Glass fiberreinforced polyamide composites have been widely employed in the automotive industry.…”

Section: Introductionmentioning

confidence: 99%

Mechanical properties of extruded glass fiber reinforced thermoplastic polyolefin composites

et al. 2020

View full text Add to dashboard Cite

Engineered structural materials are required to feature a combination of deformability (ductility) and strength to be considered damage‐tolerant for safety‐critical applications. These two mechanical properties, however, tend to be mutually exclusive, encouraging optimization of the trade‐off between strength and toughness. In this report, an elastomer and a glass fiber were incorporated into a blend of two grades of polypropylene (PP) to improve matrix toughness through both intrinsic and extrinsic toughening mechanisms. This study investigates the impact resistance (at 23°C and −30°C), and strength, stiffness, deformability, and processability of extruded compatibilized glass fiber reinforced thermoplastic polyolefin (TPO) composites at 23°C. For the hybrid composites contribution of different toughening mechanisms in attainment of the final impact strength is governed by the testing temperature and processing (extruder screw) speed. The intrinsic toughening mechanism induced by the presence of the ethylene α‐olefin copolymer is suppressed by the introduction of glass fiber at 23°C, irrespective of screw speed and screw configuration design. The heat distortion temperature (HDT), flexural modulus, and tensile strength exhibit a marked improvement by glass fiber inclusion at 23°C. By evaluating the performance of the composites at −30°C, it was observed that the impact energy of the elastomer modified hybrid composites may be enhanced in the same manner as the glass fibers toughen the brittle unmodified PP matrix. It was noted that contrary to the tensile properties at break, the yield behavior of the composites containing fibers, severely shortened, is independent of the presence of the fibers at 23°C.

show abstract

“…These studies reveal how the nature of the reinforcements has a high impact on the mechanical properties of its composites. In this sense, artificial fibers like glass fibers, aramids, or carbon fibers show the highest strengthening and stiffening abilities [9,10]. Natural fiber strands and wood fibers also show notable capabilities as polyolefin reinforcements.…”

Section: Introductionmentioning

confidence: 99%

Modeling the Stiffness of Coupled and Uncoupled Recycled Cotton Fibers Reinforced Polypropylene Composites

Serrà

Tarrés

Chamorro³

et al. 2019

Polymers

View full text Add to dashboard Cite

The stiffness of a composite material is mainly affected by the nature of its phases and its contents, the dispersion of the reinforcement, as well as the morphology and mean orientation of such reinforcement. In this paper, recovered dyed cotton fibers from textile industry were used as reinforcement for a polypropylene matrix. The specific dye seems to decrease the hydrophilicity of the fibers and to increase its chemical compatibility with the matrix. The results showed a linear evolution of the Young’s moduli of the composites against the reinforcement contents, although the slope of the regression line was found to be lower than that for other natural strand reinforced polypropylene composites. This was blamed on a growing difficulty to disperse the reinforcements when its content increased. The micromechanics analysis returned a value for the intrinsic Young’s modulus of the cotton fibers that doubled previously published values. The use of two different micromechanics models allowed evaluating the impact of the morphology of the fibers on the Young’s modulus of a composite.

show abstract

Mechanical and structural properties of glass fiber‐reinforced polypropylene (PPGF) composites

Cited by 42 publications

References 43 publications

Flexural Properties and Mean Intrinsic Flexural Strength of Old Newspaper Reinforced Polypropylene Composites

Flexural Properties and Mean Intrinsic Flexural Strength of Old Newspaper Reinforced Polypropylene Composites

Mechanical properties of extruded glass fiber reinforced thermoplastic polyolefin composites

Modeling the Stiffness of Coupled and Uncoupled Recycled Cotton Fibers Reinforced Polypropylene Composites

Contact Info

Product

Resources

About