The Fraunhofer Institute for Structural Durability and System Reliability (LBF) of Germany announced that after two years of research, it is called "Bio-resin-based agriculture and forestry with spherical porous structure and fire resistance The R & D project of “Waste Building Thermal Insulation Material” developed a new type of bio-based exterior wall insulation material. The material is competitive in manufacturing, process performance, and has all the properties required by market-leading polystyrene insulation boards.
Polystyrene foam board (PS) is a common thermal insulation material currently on the market, used in more than 90% of thermal insulation composite systems (TICS). Due to maintenance and price considerations, it is difficult to be replaced by bio-based materials. However, the newly developed bio-based composite materials of the Fraunhofer LBF Institute are quite advantageous in terms of price.
This is a composite material made of wood chips, corn cob and other agricultural and forestry wastes and lignin-based water-based resin, with mineral fillers as flame retardants. In the manufacturing process, the outer surface of the porous particles of the regenerated raw material is first coated with a coating containing a mineral flame retardant, and then pressed. The manufacturing process used by it has already existed and has been marketed, which makes the promotion of new insulation boards extremely easy.
The new insulation board is called OrganoPor, and its fire resistance is similar to the latest generation of polystyrene foam. The board density is 120 kg / m3 and the thermal conductivity is 40 mW / m · K. It has an open-cell structure to control the diffusion of water vapor. The test results of the project partner DAW show that it is very suitable for thermal insulation composite systems.
Because its material structure and production process are very similar to polystyrene foam board, OrganoPor is very cheap to produce, and cheap raw materials have become its unique advantage. OrganoPor will most likely become an ecological substitute for the insulation material market.
The project is supported by the Renewable Raw Materials Agency of the German Federal Ministry of Food and Agriculture. Project partners also include JOMA Dämmstoffwerk.