Abstract
Single-layer particleboards from Miscanthus and a three-layered variant with poplar strands in the surface layer were produced and tested in the laboratory. It was found that standard particleboards can be produced from the raw material Miscanthus sinensis provided the glue used is PMDI, while the use of UF, PF and MUPF adhesives lead to boards with low mechanical strength properties. All three-layered boards were produced with 5.5–6% and 4.5–5.0% PMDI as adhesive in the surface and middle layers, respectively. In all variants the middle layers consisted of 50% beech and 50% Miscanthus chips. Compared with the mixed variants the pure Miscanthus boards showed surprisingly good results and conformed to DIN 68 763 standard values. Tests were also carried out to find out whether it would be possible to produce particleboards with high bending strength by adding OSB poplar strands and Miscanthus strands to the surface layers. The strength properties of these boards were in the range of those for glass-fibre reinforced and flax fibre reinforced wood particleboards. Reinforcement with flax straw mats was effected with weight portions of 3 and 6% related to oven-dry chip mass. The mats were sprayed with glue and then placed in the surface layer. This led to a maximum increase in bending strength and E-modulus in bending of 60 and 40%, respectively. Pure Miscanthus particleboards can be effectively reinforced with flax fibres. The mechanical strength properties here exceeded those of conventional wood particleboards by about 50%.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.