Abstract
Abstract Using crop residues for the production of composite materials is increasingly substantiated due to the increasing lack of quality wood pulp in the wood processing industry. Crop residues of winter rapeseed, the stems of which are produced in the amount of 42 million tons each year in the European Union and have not yet been exploited for products with high added value, are a potentially interesting raw material for the manufacture of composite materials. If materials based on annual plants are to fully replace the use of materials based on wood, glass, metal or plastic, it is necessary to know their characteristics. In the wood processing industry most of the attention is focused on physical properties, which have an immediate effect on the mechanical properties. Knowledge of the effect of the interaction of several factors (feedstock, technological parameters) on characteristics describing the elastic properties of the material is this article's contribution. Knowledge of the interaction of these factors gives the manufacturer instructions for modifying the input parameters with the aim of producing a material with specific mechanical properties appropriate for the intended use.The article deals with the mechanical properties of composite materials manufactured from winter rapeseed crop residues subjected to bending. The results of the research describe the effect of surface modification (chemical or hydrothermal) of particles on the bending characteristics measured within the elastic region: bending modulus of elasticity „MOE“, elastic potential „EP“, stress at the limit of proportionality „LOP“. Thanks to the acquired knowledge, we can specifically modify the properties of composite material for the intended use in the future.
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