From an ecological standpoint, we researched the mechanical and physical properties of particleboards made from hemp hurd and tannin-based adhesive for use in the furniture industry. We used the following methods: sieve analysis, determination of density, humidity content, thickness swelling, flexural strength, internal bond and formaldehyde content. We devided our study into 3 phases. In phase 1, we produced one-layer boards to compare the results when using hemp hurd or wood particles and a sintetic MUF adhesive or a natural tannin-based adhesive. In the second phase, we produced 3-layer boards and one 5-layer board, to compare the results when using hemp particles of different sizes in different layers of the boards. In phase 3, we produced 3-layer boards based on the results of the previous phases, in order to compare results when changing the percantage of tannin in the adhesive of the outer layer. Based on the results of all phases we conclude a 3-layer composit of large hemp particles in the inner layer (10 % tannin in the adhesive) and small hemp particles in the outer layers (15 % tannin in the adhesive) reaches standards for use in the furniture industry.
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