A German research institute announced that after two years of research, a research and development project called "Bio-resin-based agricultural and forestry waste building insulation material with spherical porous structure and fire resistance properties" has developed a new type of bio-based exterior wall insulation material. This material is competitive in terms of manufacturing and 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 and is used in more than 90% of thermal insulation composite systems (TICS). It is difficult to replace it with bio-based materials due to maintenance and price considerations. However, the recently developed bio-based composite materials of the Institute have considerable advantages 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 filler as a flame retardant. In the manufacturing process, the outer surface of the recycled raw material porous particles is first coated with a coating containing a mineral flame retardant, and then pressed. The manufacturing process used 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 density of the board is 120 kg / m⊃3; and the thermal conductivity is 40 mW / m · K. Its open-cell structure controls the diffusion of water vapor well. The test results of project partner DAW show that it is very suitable for application in thermal insulation composite systems.
Because its material structure and production process are very similar to polystyrene foam boards, OrganoPor is very cheap to produce, and cheap raw materials have become its unique advantages. OrganoPor will most likely become an ecological alternative to the insulation market.