Permeable Water-Resistant Heat Insulation Panel Based on Recycled Materials and Its Physical and Mechanical Properties

• Published in: Molecules (Basel, Switzerland) Switzerland), 2019-09, Vol.24 (18), p.3300
• Main Authors: Hýsek, Štěpán, Frydrych, Miroslav, Herclík, Miroslav, Fridrichová, Ludmila, Louda, Petr, Knížek, Roman, Le Van, Su, Le Chi, Hiep
• Format: Article
• Language: English
• Subjects: Adhesives; Cellulose; Composite materials; Fire resistance; geopolymer; Geopolymers; Heat; Heat conductivity; heat insulation; Hot Temperature; Humidity; Insulation; Manufacturing; Mechanical Phenomena; Mechanical properties; Membrane permeability; Membranes; Membranes, Artificial; nanofiber membrane; Nanofibers - chemistry; Permeability; Physical properties; Polyurethane; Polyurethane foam; Polyurethanes - chemistry; Raw materials; Recycled materials; Recycling; sandwich panel; Tensile strength; Textile fibers; Thermal Conductivity; Thermal insulation; Triticum - chemistry; Water - chemistry; Water circulation; Water column; Water flow; Water resistance; Water vapor; Wheat; Winter wheat
• ISSN: 1420-3049; 1420-3049
• DOI: 10.3390/molecules24183300

This paper deals with the development and characteristics of the properties of a permeable water-resistant heat insulation panel based on recycled materials. The insulation panel consists of a thermal insulation core of recycled soft polyurethane foam and winter wheat husk, a layer of geopolymer that gives the entire sandwich composite strength and fire resistance, and a nanofibrous membrane that permits water vapor permeability, but not water in liquid form. The observed properties are the thermal conductivity coefficient, volumetric heat capacity, fire resistance, resistance to long-term exposure of a water column, and the tensile strength perpendicular to the plane of the board. The results showed that while the addition of husk to the thermal insulation core does not significantly impair its thermal insulation properties, the tensile strength perpendicular to the plane of these boards was impaired by the addition of husk. The geopolymer layer increased the fire resistance of the panel for up to 13 min, and the implementation of the nanofibrous membrane resulted in a water flow of 154 cm in the amount of 486 g of water per 24 h at a water column height of 0.8 m.