Development and Investigation of Thermal Insulation From Hemp-Polylactide Fibres

Abstract

In the last two decades intensive grow of industry of building materials from renewable resources is observed. Such situation is related to some aspects: global warming, environmental pollution, impact on human health, environmental impact of materials at their end-of-life. In current study development of thermal insulation materials from hemp and polylactide fibres are analysed. While main parameter for thermal insulation materials is thermal conductivity, rational density of composite 40 kg/m3 was chosen. For experiments 11 compositions were prepared. One composition was prepared just with hemp and polylactide fibres, five compositions with different amount of hydrophobic agent and 5 compositions with different amount of fire retardant. Experimentally thermal conductivity, sound absorption coefficient, short-term water absorption, fire resistance, water vapour transfer properties and compressive strength were determined. Rational amount of hydrophobic agent and fire retardants was chosen.

From hemp grown on carbon-vulnerable lands to long-lasting bio-based products: Uncovering trade-offs between overall environmental impacts, sequestration in soil, and dynamic influences on global temperature

“…Here, based on Pretot et al (2014), we assumed that 77 kg CO2 is absorbed per m 3 over the entire lifespan of the concrete. The separated hemp fibers are mixed with additives to become fire retardant and are subjected to thermocompression, resulting in the production of insulation boards; these processes were modeled based on data from Andersson and Björhagen (2018) and Stapulionienė et al (2016) (Table A.S10). The thermal conductivity properties considered for the produced boards are detailed in the SI A, in Section2.8.…”

Selection of the Insulation Materials for Refurbishment Purposes

“…According to the author, future potential materials include nano-insulation, dynamic insulation, and the load-bearing insulation material NanoCon (Bjørn 2011). Other authors proposed new insulation solutions as insulation from hemp-polylactide fibres (Stapulionienė et al 2016), processed straw (Vėjelienė 2012) as well as new building orientation solutions (Hamdani et al 2014).…”