Influence of Impregnation with Modified Starch of a Paper Core on Bending of Wood-Based Honeycomb Panels in Changing Climatic Conditions

Abstract

The main objective of the study was to determine the effect of impregnation of the paper core with acetylated starch on the mechanical properties and absorbed energy in the three-point bending test of wood-based honeycomb panels under varying temperatures and relative air humidity conditions. Nearly six hundred beams in various combinations, three types of facings, three core cells geometries, and two paper thicknesses were tested. The experiment results and their statistical analysis prove a significant relationship between the impregnation of paper with modified starch and mechanical properties. The most effective in absorbing energy, the honeycomb panels, consisted of a core with a wall thickness of 0.25 mm and a particleboard facing.

The Influence of the Accelerated Aging Process on the Compressive Strength of Wood Treated with Components of a Salt Fire Retardant

“…Then, the beams were subjected on compressive strength test according to the ISO 13061-1:2014 [ 24 ], ISO 13061-5:2020 [ 25 ] and ISO 13061-17:2017 [ 26 ] standard on the Zwick Z100 testing machine (Zwick GmbH, Ulm, Germany) [ 23 , 27 ]. During the tests, the value of the compressive strength and Young’s modulus were recorded [ 28 ].…”

“…A statistical analysis of the obtained results was performed, starting with the determination of appropriate measures of central tendency (mean) and standard deviation (SD) [ 28 ]. The Kolmogorov–Smirnov test was used to verify the compliance with the theoretical normal distribution, and the homogeneity of variance was tested based on the Bartlett test.…”

Sustainable Innovation: Fabrication and Characterization of Mycelium-Based Green Composites for Modern Interior Materials Using Agro-Industrial Wastes and Different Species of Fungi

“…– is not reported, < is less than, and NB is non-biodegradable during 30 years. * [ 19 , 22 , 24 , 29 , 42 , 55 , 58 , 59 , 60 , 61 , 68 , 75 , 76 , 77 , 83 , 89 , 90 , 91 , 92 , 93 , 94 , 95 , 96 , 97 , 98 , 99 , 100 , 101 , 102 , 103 , 104 , 105 , 106 , 107 , 108 , 109 , 110 , 111 , 112 , 113 , 114 , 115 , 116 , 117 , 118 , 119 , 120 , 121 , 122 , 123 ].…”

Mechanical and Chemical Resistance of UV Coating Systems Prepared under Industrial Conditions Using LED Radiation

“…Such systems include a honeycomb composite panel, which consists of a particleboard or MDF (medium-density fiberboard) frame filled with honeycomb paper, covered on both sides with thin fiberboard or plywood facing. The inspiration of the hexagonal shape taken from nature allows for high durability while effectively filling the space with the least possible material consumption [5][6][7][8]. This structure makes furniture and doors lightweight, which is helpful for transportation, handling, and assembly [9].…”