Zinātniskās darbības atbalsta sistēma
Latviešu English

Publikācija: Birch Plywood Composite Material with Hemp Fibre Reinforcement

Publikācijas veids Anonīmi recenzēts zinātniskais raksts, kas publicēts izdevumā ar starptautisku redkolēģiju un pieejams citā indeksētā datu bāzē
Pamatdarbībai piesaistītais finansējums Nav zināms
Aizstāvēšana: ,
Publikācijas valoda English (en)
Nosaukums oriģinālvalodā Birch Plywood Composite Material with Hemp Fibre Reinforcement
Pētniecības nozare 2. Inženierzinātnes un tehnoloģijas
Pētniecības apakšnozare 2.5. Materiālzinātne
Pētniecības platforma Neviena
Autori Gints Upītis
Jānis Dolacis
Atslēgas vārdi birch plywood, reinforced plywood, hemp, phenolformaldehyde resin, polyvinylacetate glue
Anotācija With growing volumes of utilisation of traditional natural resources, increasing attention is given to new environmentally friendly materials. Worldwide, work is under way on obtaining new materials and upgrading the properties of the already existing ones. New material compounds are created; as a result, composite materials with higher physico-mechanical and service properties have been developed. One of such promising composite materials is plywood, which makes it possible, due to its constructive structure, to reach an enhanced mechanical strength. With increasing application of plywood in the national economy, it becomes necessary to enhance its physico-mechanical properties and to decrease the production costs. Plywood with different coats, varying their surface physical properties, is developed and introduced in production. In industry, plywood coating with different non-wood materials is widely used. An alternative for the so far used methods is the enhancement of the plywood strength with fibre materials of natural origin. The objective of the study was, using a bicomponent binder, to mutually compare the effect of the long fibres of dried hemp and hemp yarn woven technical fabrics on the changes in the physico-mechanical properties of the plywood composite material. It is shown that, for the composite material with the hemp technical textile introduced in its matrix, bending strength index, in comparison with that for the control sample, increases by 21.8 % and modulus of elasticity in static bending increases by 23 %. However, introducing individual hemp fibres, these strength indices are lower. Summarising the obtained results, it may be concluded that, in the future experiments, it will be necessary to investigate the physico-mechanical properties of plywood composite materials, in the matrix of which a technical textile made from hemp is introduced, changing its parameters and the location in different layers of the composite material, as well as the glue, tree species and compressing pressure.
Hipersaite: http://annals-wuls.sggw.pl/?q=node/797 
Atsauce Upītis, G., Dolacis, J. Birch Plywood Composite Material with Hemp Fibre Reinforcement. Annals of Warsaw University of Life Sciences – SGGW. Forestry and Wood Technology, 2012, No. 77, 157.-160.lpp. ISSN 1898-5912.
ID 15082