WOOD RESEARCH Volume 62, Number 3, 2017
Wei Yan, Jianbo Zhou, Bin Zhang, Wansi Fu, Zhongjia Chen, and Chenghao Ma

Development design and mechanical properties of arc bamboo

The manufacture process, specification and mechanical properties of arc bamboo were studied to support the biomaterial “arc-bamboo recombined in original status (A-BROS)” manufactured by bionic technology. The results indicated that the iso-curvature processed with milling technology is the key technology for arc bamboo, and arc bamboo monomer increases utilization rate of bamboo by 30% and the monomer width (≥40 mm) by more than 90%, as well as excellent bending resistance, these confirm relatively greater thickness of monolayer A-BROS material with slighter glue spread and superior mechanical property. The novel recombinant made by arc bamboo with elegant texture and original status could be used as board and timber, and form new structure, furniture and building materials.

WOOD RESEARCH Volume 63, Number 1, 2018
Xuehao Wang, Zhongjia Chen, Guosehng Yu, and Xiangyue Yuan

Effects of poplar f ibres as solid bridge on the physical characteristics of biomass briquette made from sawdust and bamboo powder

At room temperature, on condition that the die be within temperatures of 200 – 300°C biomass briquette production made from sawdust (S) and bamboo powder (B) was conducted by a briquette extruder using post-heating method, fibre with steam explosion poplar fibres used as additive. As observed through the microscope, fibres as additive has the micro-mechanism of promoting mechanical properties of biomass briquette during densification. For verifying the feasibility and effect of fibre as additive, BBD experimental design was macroscopically adopted to compare the indicators of surface quality, relaxation density, maximum radial compression pressure, and hydrophobicity. Response surface model was used to deduce the reasonable heating temperature range for exploring the suitable condition of fibre as additive. The result showed that fibre as additive has apparent effect on briquette densification of sawdust and bamboo powder within a given temperature range. Through microscopic observation, it was found that fibres acted as solid bridges which played a positive role in densification in the heating temperature of 200∼250°C. At the temperature of 240°C, the fibres started to be carbonized. And within the temperature range of 250-300°C, the carbonized fibre mainly acts as lubricant between the briquette and the channel surface of the die.