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1 EFFECT OF POST CURING TEMPERATURE ON MECHANICAL PROPERTIES OF A FLAX FIBER REINFORCED EPOXY COMPOSITE Charlotte Campana1, Romain Leger1*, Rodolphe Sonnier1, Laurent Ferry1, Patrick Ienny1 1 C2MA, IMT Mines Alès, 6 Avenue de Clavières, 30319 Alès Cedex * Corresponding author e-mail: romain.leger@mines-ales.fr This article has been first published online in … All along the paper, both fibers morphology and mechanical properties are discussed, in constant link with their use for composite materials reinforcement. VOLUME 14, ISSUE 2. NFPs also reduce production costs and improve the material’s carbon footprint. The materials are manufactured from woven flax fibre, pre-impregnated and consolidated with polypropylene or PLA resins. Eventually, it could even replace fibreglass or carbon fiber. The excellent mechanical properties of flax, combined with the added functionalities they bring, make them a very attractive potential material for fibre reinforced composites. When normalized by density, flax fiber mechanical properties are competitive with E-glass fibers. Tensile, interface and interlaminar shear strength together with flexural and impact damage tolerance were compared in this study. Florian Puch, Christian Hopmann, Experimental investigation of the influence of the compounding process and the composite composition on the mechanical properties of a short flax fiber–reinforced polypropylene composite, Polymer Composites, 10.1002/pc.23141, 36, 12, (2282-2290), (2014). At the same time, the studies dealing with diverse composite constituents, like, e.g., different fiber forms or stacking sequences, end up with the conclusion that in comparison with other parameters, the amount of the used carbon and flax fibers and the stacking sequence significantly affect the properties of the resulting hybrid composites. Both the quasi-static and time dependent mechanical properties of flax fiber/thermoplastic starch based composites are analyzed. Flax fiber was mixed with high density polyethylene (HDPE) with fiber content from 10 to 30% by mass and processed by extrusion and injection molding to biocomposites. Finally, this review asks botanists, breeders, and farmers' knowledge toward the selection of potential flax varieties dedicated to composite applications, through optimized fiber performances. Keyword: Flax fiber pulp; Tensile strength; Impact strength The uncertainties related to composite materials based on flax fibers induce to take into account the variability of the influencing parameters of the composite, in particular the material properties, in the current deterministic model. PROPERTIES OF LONG FLAX FIBER REINFORCED NONWOVEN AND COMPOSITE MATERIALS Arta Seile, Dana Belakova Riga Technical University, Latvia arta.seile@edu.rtu.lv, dana.belakova@rtu.lv Abstract. Flax fiber has become increasingly attractive as reinforcement in polymer matrix composites. Furthermore, concurrently with the fiber content of the stem, the fiber mechanical properties could be a relevant parameter to take as perspectives for breeders to improve the lodging resistance; this parameter is all the more interesting as its optimization would be appropriate for the use of flax fibers in the composite … In this paper, the Flax and Kenaf fibres are used as reinforcement to form hybrid composite. The mechanical properties of a hybrid composite can be varied by changing volume ratio and stacking sequence of different plies. Natural fiber composites are composite materials using fibers derived from renewable and carbon dioxide neutral resources. The tensile properties of the flax/glass fiber reinforced hybrid composites were improved with the increasing of glass fiber content (Zhang Y, 2013). averaging based models, developed for short fiber composites, to flax reinforced polymers are evaluated. However, most of the developments have focused on the random discontinuous fiber composite system. It is found Nowadays, especially in the car industry, the demand of light construction usage increases. The use of natural fiber composites in the field of biomedical applications is increasing day by day. The materials can be delivered in rigid sheets or on rolls. 109–165 MPa were obtained as compared to the pure resin (≈40 MPa). A composite material based on flax will be light and resistant. 1.4 NATURAL FIBER REINFORCED COMPOSITES The interest in natural fiber-reinforced polymer composite materials is rapidly growing both The cultivation of flax binds CO 2 and the production of NFP generates 33% lower CO 2 emissions than conventional fiber-reinforced plastics. The high- modulus fiber provides the stiffness and load bearing qualities, whereas the low-modulus fiber makes the composite more damage tolerant and keeps the material cost low. Loose hierarchical flax fibres/polypropylene composites were manufactured in a simple way based on a paper-making process in order to include nanocellulose and allow the hornification of the nanofibres in a controlled manner. Also, the flax fiber modulus is comparable to that of glass but has a lower density, this means that flax fibers actually have a higher specific stiffness than glass fibers. ISSN 1392-8716 573 The use of natural fibers for the reinforcement of composites has lately received increasing attention, both by the academia and by … The two strategic issues: innovation and sustainable development “As renewable European resources, natural flax and hemp fibers have become the champions of a bioeconomy in which their exclusive, reliable mechanical performance properties are more than ever in harmony with sustainable innovation. 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