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Využitelnost recyklátu dřevovláknitých desek ve výrobě kompozitních materiálů
Valko, Filip
The research dealt with the issue of the usability of fiberboard recyclate in the production of composite materials based on particleboard and wood fiber. The investigated properties were moisture content, density, density profile, thickness swelling, flexural strength, modulus of elasticity and tensile strength perpendicular to the fibers. The results were evaluated in Excel after the tests. A comparison of the results between the different boards was then carried out. The use of recycled wood fiber in composite materials has a positive effect on the physical properties, modulus of rupture and tensile strength perpendicular to the plane of the board.
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Posouzení využitelnosti vybraných listnatých dřev pro výrobu kompozitu na bázi dřeva
Mišičák, Patrik
The bachelor thesis deals with the assessment of the usability of alder and aspen wood for the production of wood-based composite, specifically the production of OSB. It uses the experimental analysis carried out to evaluate the applicability for sheating materials of timber frame structures. First section reviews particleboard with a focus on OSB. It summarises the importance, use and production of OSB panels and focuses on alternative raw material types for the production of wood-based composites. Describes the various technological processes involved in the production of OSB. The second part focuses on the individual production operations and shows the measurement procedures carried out. It also illustrates the determined data and the statistical methods applied to them. Based on the statistically processed data of selected physical and mechanical properties of the manufactured boards, it compares and evaluates the determined values with the requirements specified in standard ČSN EN 300, corresponding to the given application.
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Hustotní profil a jeho vliv na vlastnosti třískových desek
Matyáš, Michal
The goal of this thesis is to determine properties of manufactured particleboards with different percent content of recycled wood. The objective was to determine density values, thickness swelling, moisture content, internal bonding, bending properties and vertical density profile of particleboards. The research question was to report the effect of different percent content of recycled wood on final properties of particleboard. The own method was established and various particleboards produced. The properties of materials were tested according to EN standards and by descriptive statistics, analysis of variance (ANOVA) and linear regression evaluated. In summary in research it was observed that percent content of recycled wood has little impact on final properties of particleboard, although there were several factors which may have affected these results. These factors are described in this thesis.
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