INFLUÊNCIAS DA ESPÉCIE, TRATAMENTO PRESERVATIVO E ADESIVOS NAS PROPRIEDADES FÍSICAS DO BAMBU LAMINADO COLADO

Ciencia Florestal

关键词: Dendrocalamus giganteus;    Bambusa vulgaris;    adesivos;    caracterização física.;   

DOI  :  10.5902/1980509824220

学科分类：农业科学（综合）

来源: Universidade Federal de Santa Maria * Centro de Pesquisas Florestais

【 摘 要 】

This work aimed to evaluate the physical properties of laminated bamboo lumber - LBL in relation to species, preservative treatments and adhesive employed. Laths ofDendrocalamus giganteusandBambusa vulgarisbamboos with over the age of three years old were produced. Some of the laths were immersed in water and the other in solution of disodium octaborate tetrahydrate (Na 2 B 8 O 13 4H 2 O) - Timbor, with 2% concentration, during 15 days. After treated and air season, the laths were transformed into strips with dimensions of 0.5 x 3.0 x 45 cm (thickness x width x length) and employed in the manufacture of laminated bamboo lumbers. The adhesives used for gluing the strips were the basis of polymer isocyanate emulsion (PIE), melamine urea formaldehyde (MUF), polyvinyl acetate cross (PVAc) and resorcinol formaldehyde (RF). The preservative treatments and the adhesives did not influence the densities of LBLs manufactured withDendrocalamus giganteus . For theBambusa vulgaris, the densities of LBLs were affected by the type of adhesive. It was observed that the LBLs manufactured withDendrocalamus giganteushad a higher dimensional stability than those produced with theBambusa vulgaris . The MUF and RF adhesives have given greater dimensional stability to the BLCs produced with both species of bamboo. The LBLs adhered with EPI or PVA had greater delamination, regardless the species of bamboo and the preservative treatment, not being suitable for external uses.

【 授权许可】

CC BY-NC