Thermal Insulation from Hardwood Residues

2nd International Conference on Innovative Materials, Structures and Technologies

Sable, I.^1 ; Grinfelds, U.^1 ; Vikele, L.^1 ; Rozenberga, L.^1 ; Zeps, M.^2 ; Luguza, S.^3

Latvian State Institute of Wood Chemistry, 27 Dzerbenes Str., Riga

LV 1006, Latvia^1

Latvian State Forest Research Institute Silava, 111 Rigas Str., Salaspils

LV 2121, Latvia^2

Latvian University of Agriculture, Forest Faculty, 11 Akademijas Str., Jelgava

LV 3001, Latvia^3

关键词: Building insulations;    Hardwood species;    Plywood production;    Presence of water;    Reaction to fire;    Rising temperatures;    Strong correlation;    Thermal insulation boards;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/96/1/012027/pdf
DOI  :  10.1088/1757-899X/96/1/012027

来源: IOP

【 摘 要 】

Adequate heat is one of the prerequisites for human wellbeing; therefore, building insulation is required in places where the outside temperature is not suitable for living. The climate change, with its rising temperatures and longer dry periods, promotes enlargement of the regions with conditions more convenient for hardwood species than for softwood species. Birch (Betula pendula) is the most common hardwood species in Latvia. The aim of this work was to obtain birch fibres from wood residues of plywood production and to form low-density thermal insulation boards. Board formation and production was done in the presence of water; natural binder, fire retardant and fungicide were added in different concentrations. Board properties such as density, transportability or resistance to particulate loss, thermal conductivity and reaction to fire were investigated. This study included thermal insulation boards with the density of 102-120 kg/m3; a strong correlation between density and the binder amount was found. Transportability also improved with the addition of a binder, and 0.1-0.5% of the binder was the most appropriate amount for this purpose. The measured thermal conductivity was in the range of 0.040-0.043 W/(m•K). Fire resistance increased with adding the fire retardant. We concluded that birch fibres are applicable for thermal insulation board production, and it is possible to diversify board properties, changing the amount of different additives.