Impact Resistance of “Liquid Wood”

Nedelcu, Dumitru; Plavanescu, Simona; Puiu, Elena

doi:10.4028/www.scientific.net/amr.1036.13

Cited by 6 publications

(4 citation statements)

References 3 publications

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“…The material of the samples used for texturing is Arboblend V2 Nature, a biopolymer patented by a team of researchers from the Fraunhofer Institute for Chemical Technology (ICT) in Pfinztal (Germany) in collaboration with the company Tecnaro GmbH, showing great potential for use in industrial applications from all fields that use renewable resources and whose content is based on biopolymers, such as polyhydroxyalkanoates (PHAs), polycaprolactone (PCL), polyester (e.g., bio-PET), starch, polylactic acid (PLA), bio-polyolefins (bio-PEs), bio-polyamides (bio-PAs), lignin, natural resins, natural waxes, natural oils, natural fatty acids, cellulose, organic additives and natural reinforcing fibers [ 22 ]. The basic properties of the Arboblend V2 Nature material are presented in Table 1 [ 23 ], and a number of authors have studied this material both from the point of view of mechanical and thermal properties and have also analyzed its structure [ 24 , 25 , 26 , 27 , 28 , 29 ].…”

Section: Methodsmentioning

confidence: 99%

Characterization of Arboblend V2 Nature Textured Surfaces Obtained by Injection Molding

et al. 2023

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Surface texturing is an engineering technology used in order to improve the surface characteristic of plastic parts obtained by injection molding. Applying this process not only changes the part surface properties, but also its topography. The novel functionalities of plastic products become useful when other materials make contact with the textured surface. Of course, these characteristics may vary depending on the laser positioning, dimensions, and geometry of the texture. The present paper presents the surface characteristics obtained after the laser texturing of the Arboblend V2 Nature biodegradable polymer. Three distinct geometries were studied: hexagonal, square, and triangular, and different behaviors of them were highlighted during surface free energy (SFE) and contact angle (WCA) measurements: a hydrophobic character for square and hexagonal geometry with distilled water as the measure liquid, and a hydrophilic character with diiodomethane as the measure liquid; for triangle geometry, the contact angle measurements were impossible to extract because the drop turns into a flat puddle. Additionally, the friction coefficient varied depending on the geometry texture, with the lowest value being recorded by the sample with hexagonal geometry. The micro-indentation tests highlighted increased surface micro-hardness compared to the basic material. The possibility of use in the practice of textured surfaces is viable; thus, based on the obtained results, there is even the possibility to replace non-biodegradable polymers from different sectors of activity.

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Section: Methodsmentioning

confidence: 99%

Characterization of Arboblend V2 Nature Textured Surfaces Obtained by Injection Molding

et al. 2023

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“…The biodegradable material Arboblend V2 Nature was used, whose studies on mechanical, thermal and structural properties were carried out by a number of authors according to [20][21][22][23][24][25][26], and which were extremely useful in establishing the research and selection methodology of the parameters of the water cutting process. The cut parts of the two materials are shown in Figure 6.…”

Section: Methodsmentioning

confidence: 99%

Technical Optimization of Water Jet Cutting of Biodegradable Materials

Mărguță¹,

Popa²,

Herghelegiu³

et al. 2022

IJMEM

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The main purpose of the technical optimization is to determine the optimal values of the processing parameters in order to increase the processing performance or decrease the processing time. Abrasive material water jet cutting is a processing process whose applicability is increasing in the conditions of the appearance of high-performance equipment. The technical optimization of this machining process aims at determining the distance between the machined material and the cutting head, determining the optimum length of the focusing tube, establishing the optimum machining pressure and determining the optimum amount of abrasive material so as to ensure maximum penetration depth of water jet with abrasive or minimizing surface roughness. During the research, the part subjected to abrasive water jet cutting was obtained by injection from Arboblend V2 Nature. The experiments were carried out according to a complete factorial plan 23, where the parameters on two levels were: water jet pressure, cutting speed and abrasive material flow. The optimization criterion followed was to minimize the standard roughness Ra. The experimental results showed that the parameter flow rate of abrasive material has the greatest influence on the roughness, the highest values of roughness are obtained when using a larger amount of abrasive (300g / min). The lowest value of the roughness of the cut surfaces is obtained for the following process parameters: low water pressure - 100MPa, high cutting speed - 150 mm / min and high flow of abrasive material - 300g / min.

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“…A multitude of tests and observations have been carried out so far on “liquid wood”. These tests approached the topics of: biodegradability [ 37 ], the influence of the reinforcing material [ 34 , 38 ], tensile strength [ 39 , 40 ], microindentation [ 41 , 42 ], bending resistance [ 43 , 44 ], impact resistance [ 45 ], calorimetry [ 42 ], thermal properties [ 46 ], electrical properties [ 46 ], effect of UV light [ 47 ], surface analysis [ 48 ], and SEM analysis (several results can be visualized below, in Figure 1 a,b) [ 49 ].…”

Section: Introductionmentioning

confidence: 99%

Complex Behavior in the Dynamics of a Polymeric Biocomposite Material—“Liquid Wood”. Experimental and Theoretical Aspects

et al. 2021

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The purpose of the present paper is to analyze, both experimentally and theoretically, the behavior of the polymeric biocomposite generically known as “liquid wood”, trademarked as Arbofill. The experimental part refers to the mechanical performance in tension and compression, having as finality the possibility of using “liquid wood” as a material suitable for the rehabilitation of degraded wooden elements in civil structures (ex. use in historical buildings, monuments etc.,). The theoretical part refers to computer simulations regarding the mechanical behavior of “liquid wood” as well as to a theoretical model in the paradigm of motion, which describes the same behavior. This model is based on the hypothesis that “liquid wood” can be assimilated, both structurally and functionally, to a multifractal object, situation in which its entities are described through continuous, non-differentiable curves. Then, descriptions of the behavior of “liquid wood”, both in the Schrödinger-type and in hydrodynamic-type representations at various scale resolutions, become operational. Since in the hydrodynamic-type representation, the constitutive law of “liquid wood” can be highlighted, several operational procedures (Ricatti-type gauge, differential geometry in absolute space etc.,) will allow correlations between the present proposed model and the experimental data. The obtained results, both practical (81% bearing capacity in compression and 36% bearing capacity in tension, compared to control samples) and theoretical (validation of material performance in virtual environment simulations, stresses and strains correlations in a theoretical model) indicate that “liquid wood” could be used in the construction industry, as a potential rehabilitation material, but with more development clearly needed.

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Impact Resistance of “Liquid Wood”

Cited by 6 publications

References 3 publications

Characterization of Arboblend V2 Nature Textured Surfaces Obtained by Injection Molding

Characterization of Arboblend V2 Nature Textured Surfaces Obtained by Injection Molding

Technical Optimization of Water Jet Cutting of Biodegradable Materials

Complex Behavior in the Dynamics of a Polymeric Biocomposite Material—“Liquid Wood”. Experimental and Theoretical Aspects

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