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1 2012

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Flexural properties of samples obtained from “liquid wood”

Nedelcu D., Stefan A., Mindru T., Plavanescu S.

Selected Engineering Problems

2012

nr 3

151--154

The use of recycled materials has become an important point of view in many activity areas, that’s why the “liquid wood” could replace plastic materials in the near future. Arbofill, Arboblend and Arboform are the three types of “liquid wood” developed by Fraunhofer Institute for Chemical Technology in Pfinztal-Germany. The main drawback of plastic materials is the existence in their composition of some carcinogens substances, nonbiodegradability and the difficulty in recycling products. The “liquid wood” removes these disadvantages. More “liquid wood” has the mechanical properties even better than other plastics, good resistance to water, can be reused up to five times over, without affecting the mechanical properties of the material, as for example fire resistance and durability, etc. This paper presents analysis of flexural properties for arboblend. Also the bending deflection and angle deflection are presented. Finally the paper presents the modulus of elasticity after flexural test. The values of these modulus are better than others plastics such as PA 66 (Polyamide 66), PA11 (Polyamide 11), POM (Acetal Homopolymer), PE-HD (High Density Polyethylene), PVDF (Poly Vinylidene Fluoride), ECTFE (Etylene Copolymer Fluoride), ECTFE (Etylene Copolymer) in case of high stiffness of function parts. On the other point of view the liquid wood could replace the following plastics material: PA66SF20, PEEK GF30, PEEK CF30, PEK, PAI, PPS GF40, PEI GF30 etc. According to the analyses performed and to the conclusions drawn, the liquid wood can replace the plastic materials in many industrial applications, such as: ornaments and not just for cars, connectors, switches, electrical industry, different industry mobile accessories, computers, televisions, mobile phone housings etc.