STUDY ON THE FEASIBILITY OF VENEER AND PLYWOOD PRODUCTION OF Hevea brasiliensis – CLONE RRIM600

Q4 Environmental Science

Floresta Pub Date : 2022-10-07 DOI:10.5380/rf.v52i4.69626

Renan Zunta Raia, S. Iwakiri, R. Trianoski, Alan S. de Andrade

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引用次数: 0

Abstract

Hevea brasiliensis is a very prominent species in Brazil, but there are few studies correlating this species with wood panels production. Based on this, the aim of this work was to evaluate the technical feasibility of laminating and plywood production of Hevea brasiliensis varying the weight and solids content of the glue mixture on the mechanical properties. Phenolic plywood with five 2.0 thick veneers was produced in the laboratory, with two different solids contents of the glue mixture: 35 and 40%, and three different glue weights: 140, 160 and 180 g/m2. The panels were pressed for 10 minutes at 140°C on pressure of 10 kg/cm2. The laminate yield, basic density, and resistance of the glue line to shearing and static bending were evaluated. The lamination yield showed satisfactory results. The lower weight panels produced do not meet the minimum requirement of EN 314-2 and the others two had statistically equal means, and the use of 160 g/m² weight is recommended. The solids content of the glue mix influenced the mechanical properties, but the results still higher than those obtained for Pinus taeda. The results of this study indicate the potential for using Hevea brasiliensis in veneers and plywood production.

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巴西橡胶树（Hevea brasiliensis）RRIM600无性系生产胶合板的可行性研究

巴西橡胶树是巴西一个非常突出的物种，但很少有研究将该物种与木板生产联系起来。在此基础上，本工作的目的是评估橡胶树层压和胶合板生产的技术可行性，即改变胶混合物的重量和固含量对力学性能的影响。在实验室中生产了五块2.0厚胶合板的酚醛胶合板，其中两种不同固体含量的胶水混合物：35%和40%，以及三种不同的胶水重量：140、160和180 g/m2。将面板在140°C、10 kg/cm2的压力下压制10分钟。评估了层压板的屈服强度、基本密度以及胶线的抗剪切性和静态弯曲性。层压成品率显示出令人满意的结果。生产的重量较低的面板不符合EN 314-2的最低要求，其他两个面板的平均值在统计上相等，建议使用160 g/m²的重量。混合胶的固含量影响了力学性能，但其结果仍高于火炬松的结果。本研究的结果表明，橡胶树在单板和胶合板生产中具有潜在的应用潜力。

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来源期刊

Floresta Environmental Science-Nature and Landscape Conservation

CiteScore

0.80

自引率

0.00%

发文量

期刊介绍： Revista Floresta admits articles of scientific contribution in Forest Science, in the areas of Nature Conservation, Economy and Forest Policy, Forest Management, Silviculture and Wood Technology. The main task is to promote and divulgate the development of Forest Science in Brazil and in the world. Articles published in Revista Floresta are under total responsibility of the authors, who are aware that they are original studies. It remains implicit that articles were not submitted for publication to any other divulgation media. It remains explicit the agreement of authors to norms of the journal and, along the development of their work, the observance of ethic aspects and respect of the current copyright legislation.