this research has been conducted to investigate the influence of steam temperature and densification percentage on withdrawal strength of nail and screw joints as well as flexural strength in compressed wood of eastern cottonwood (populus deltoeides). for this purpose 15 healthy standing trees of eastern cottonwood were selected from dr. bahramnia forest located in shasht-kola (gorgan). the fla...

Fiber length and distribution play important roles in the processing and mechanical performance of fiber-based products such as paper and fiberboard. In the case of wood–plastic composites (WPC), the production of WPC with long fibers has been neglected, because they are difficult to handle with current production equipment. This study provides a better understanding of the effect of fiber leng...

This paper investigates the potential of recycling waste copper chromium and arsenic (CCA)-treated timber for use as a reinforcement material in wood–plastic composites (WPCs) produced construction, including an assessment mechanical properties leaching heavy metals. Wood flour was obtained through grinding, fibres were alkaline digestion followed by bleaching. Composites with 40 wt.% bleached ...

A new epoxy-based ink is reported, which enables 3D printing of lightweight cellular composites with controlled alignment of multiscale, high-aspectratio fiber reinforcement to create hierarchical structures inspired by balsa wood. Young's modulus values up to 10 times higher than existing commercially available 3D-printed polymers are attainable, while comparable strength values are maintained.

Chemical coupling on the thennomechanical pulp (TMF') fiber improved tensile shrength of the TMP fiber handsheet and isotactic polypropylene film laminates (TPL). For the maleic anhydride W) with benzoyl peroxide (%PO) as an initiator, tensile strength i n d 52% with the TMP fiber treatment over untreated laminates. The optimum strength jmperties were obtaiaed with an MA and BPO ratio of 21. Sc...

A new type of low cost, environmentally friendly wood-plastic composites (WPC) 12 containing carbon nanotubes(CNT)of low content 0%, 0.05wt%, 0.1wt% and 0.15wt%, wood fibers 13 of 14wt% and polymer PES of 86wt% was manufactured by the selective laser sintering (SLS) 14 approach of 3D printing. The experimental results showed that the incorporating of CNTs could 15 obviously increase the mechani...