scholarly journals Impact and Tensile Properties of Polyester Nanocomposites Reinforced with Conifer Fiber Cellulose Nanocrystal: A Previous Study Extension

Polymers ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 1878
Author(s):  
Grazielle da Silva Maradini ◽  
Michel Picanço Oliveira ◽  
Lilian Gasparelli Carreira ◽  
Damaris Guimarães ◽  
Demetrius Profeti ◽  
...  
Keyword(s):  
Water Absorption ◽  
Engineering Application ◽  
Crystallinity Index ◽  
Tensile Tests ◽  
Fiber Composites ◽  
Chemical Effect ◽  
Glass Fiber Composites ◽  
Tensile Performance ◽  
Polyester Composite ◽  
Izod Impact

In a recent paper, novel polyester nanocomposites reinforced with up to 3 wt% of cellulose nanocrystals (CNCs) extracted from conifer fiber were characterized for their crystallinity index, water absorption, and flexural and thermal resistance. The use of this novel class of nanocomposites as a possible substitute for conventional glass fiber composites (fiberglass) was then suggested, especially for the 1 and 2 wt% CNC composites due to promising bending, density, and water absorption results. However, for effective engineering applications requiring impact and tensile performance, the corresponding properties need to be evaluated. Therefore, this extension of the previous work presents additional results on Izod and tensile tests of 1 and 2 wt% CNC-reinforced polyester composites, together with a comparative cost analysis with fiberglass. The chemical effect caused by incorporation of CNCs into polyester was also investigated by FTIR. In comparison to the neat polyester, the Izod impact energy increased 50% and 16% for the 1 and 2 wt% composites, respectively. On the other hand, the tensile strength and Young’s modulus remained constant within the ANOVA statistical analysis. FTIR analysis failed to reveal any chemical modification caused by up to 2 wt% CNC incorporation. The present impact and tensile results corroborate the promising substitution of a polyester composite reinforced with very low amount of CNCs for common fiberglass in engineering application.

Manufacturing Technique and Interfacial Modification of Polypropylene/Short Glass Fiber Composites

2014 ◽  
Vol 910 ◽  
pp. 250-253
Author(s):  
Jia Horng Lin ◽  
Zheng Lan Lin ◽  
Jin Mao Chen ◽  
Ching Wen Lou
Keyword(s):  
Mechanical Properties ◽  
Glass Fiber ◽  
Fiber Composites ◽  
Sem Images ◽  
Glass Fiber Composites ◽  
Single Screw Extruder ◽  
Short Glass Fiber ◽  
Interfacial Modification ◽  
Izod Impact ◽  
Short Glass

Maleic anhydride grafted polypropylene (PP-g-MA) is used as a coupling agent, and the influence of its used amount on the mechanical properties of the polypropylene/short glass fiber (PP/SGF) composites is examined. 1, 2, and 3 wt% of PP-g-MA is separately added to PP/SGF composites that are made at an 80/20 ratio (wt%), made into pellets on a single screw extruder, and then made into test samples on an injection machine. When PP-g-MA increases from 1 wt% to 3 wt%, the tensile strength of the PP/SGF composites increases from 56.22 MPa to 64.85 MPa; likewise, flexural strength increases from 67.29 MPa to 81.24 MPa, and Izod impact strength increases from 197.70 J/m 269.61 J/m. SEM images show that the surface of SGF are encapsulated with a layer of PP matrix, which indicates that PP-g-MA can effectively improve the interfacial adhesion between PP and SGF and thus increase the mechanical properties of the resulting composites.

scholarly journals Impact Resistance of Epoxy Composites Reinforced with Amazon Guaruman Fiber: A Brief Report

Polymers ◽  
2021 ◽  
Vol 13 (14) ◽  
pp. 2264
Author(s):  
Raphael H. M. Reis ◽  
Fabio C. Garcia Filho ◽  
Larissa F. Nunes ◽  
Veronica S. Candido ◽  
Alisson C. R. Silva ◽  
...  
Keyword(s):  
Fiber Composite ◽  
Impact Resistance ◽  
Fiber Composites ◽  
Epoxy Composites ◽  
Impact Performance ◽  
Electron Microscopy Analysis ◽  
Ballistic Properties ◽  
Microscopy Analysis ◽  
Izod Impact ◽  
The Impact

Fibers extracted from Amazonian plants that have traditionally been used by local communities to produce simple items such as ropes, nets, and rugs, are now recognized as promising composite reinforcements. This is the case for guaruman (Ischinosiphon körn) fiber, which was recently found to present potential mechanical and ballistic properties as 30 vol% reinforcement of epoxy composites. To complement these properties, Izod impact tests are now communicated in this brief report for similar composites with up to 30 vol% of guaruman fibers. A substantial increase in impact resistance, with over than 20 times the absorbed energy for the 30 vol% guaruman fiber composite, was obtained in comparison to neat epoxy. These results were statistically validated by Weibull analysis, ANOVA, and Tukey’s test. Scanning electron microscopy analysis disclosed the mechanisms responsible for the impact performance of the guaruman fiber composites.

Stress analysis of vascularized glass fiber composites exposed to bending loading

2021 ◽  
pp. 1-13
Author(s):  
Hamed Tanabi ◽  
A. Gencer Atasoy ◽  
Murat Demiral ◽  
Baris Sabuncuoglu
Keyword(s):  
Glass Fiber ◽  
Stress Analysis ◽  
Fiber Composites ◽  
Glass Fiber Composites ◽  
Bending Loading

scholarly journals Fatigue damage analysis of aluminized glass fiber composites

2005 ◽  
Vol 407 (1-2) ◽  
pp. 1-6 ◽  
Author(s):  
J.M. Ferreira ◽  
J.T.B. Pires ◽  
J.D. Costa ◽  
Z.Y. Zhang ◽  
O.A. Errajhi ◽  
...  
Keyword(s):  
Glass Fiber ◽  
Fatigue Damage ◽  
Fiber Composites ◽  
Damage Analysis ◽  
Glass Fiber Composites ◽  
Fatigue Damage Analysis

The Influence of Recycling On Thermotropic Liquid Crystalline Polymer and Glass Fiber Composites

2021 ◽  
Author(s):  
Tianran Chen
Keyword(s):  
High Performance ◽  
Liquid Crystalline ◽  
Tensile Modulus ◽  
Crystalline Polymer ◽  
Fiber Composites ◽  
Reinforced Composites ◽  
Recycling Process ◽  
Mechanical Recycling ◽  
Glass Fiber Composites ◽  
Pp Composites

In this paper, high-performance thermotropic liquidcrystalline polymer (TLCP)/polypropylene (PP) and glassfiber (GF)/PP composites were prepared by the injectionmolding process. Mechanical recycling of TLCP/PP andGF/PP composites consisted of grinding of the injectionmolded specimens and further injection molding of thegranules. The influence of mechanical recycling onmechanical and thermal properties was investigated. In situTLCP/PP maintains tensile modulus and strength duringthe recycling process, indicating the regeneration ofpolymeric fibrils at each reprocessing stage. GF/PPcomposite exhibits deterioration of mechanical propertiesafter recycling because of fiber breakage during processing,which is a very common issue on reusing glass or carbonfiber reinforced composites. The experimental resultsreveal that the TLCP/PP composite has better recyclabilitythan GF/PP.

Synergistic effect of SEBS-g-MA and epoxy on toughening of polyamide 6/glass fiber composites

2007 ◽  
Vol 45 (12) ◽  
pp. 1448-1458 ◽  
Author(s):  
Xiao-Lin Xie ◽  
Zhong-Zhen Yu ◽  
Qing-Xin Zhang ◽  
Gen-Wen Zheng ◽  
Yiu-Wing Mai
Keyword(s):  
Synergistic Effect ◽  
Glass Fiber ◽  
Polyamide 6 ◽  
Fiber Composites ◽  
Glass Fiber Composites
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