Asahi Organic Materials Co., Ltd. of Japan has developed a new material, a field-foaming polyurethane with a thermal conductivity of 0.021 W/mK

Asahi Yukizai has developed a polyurethane foam "BEXUR" with the world's highest thermal insulation performance and a thermal conductivity coefficient (recommended design value) of 0.021 W/mK.

Compared with the highest performance of 0.026 W/mK recognized by the JIS standard (sprayed rigid polyurethane foam for building insulation), the thermal conductivity coefficient of "BEXUR" has increased by 24%, and according to the classification of thermal conductivity coefficients of thermal insulation materials by the Japan Housing Support Agency (JHF), "BEXUR" is the only polyurethane foam foam rated F (the highest thermal insulation performance grade). Since it can promote the thinning of thermal insulation materials, it is expected to be applicable to high-energy-efficiency design building fields such as net zero energy homes (ZEH) and net zero energy buildings (ZEB).

Asahi Organic Materials has improved the gas barrier properties of foam with its patented technology, making it difficult for the foaming agent inside the insulation material to escape, so the initial value of "BEXUR" can reach 0.018 W/mK when it is just sprayed. In addition, through exclusive technology, "BEXUR" has minimized the deterioration of insulation performance over the years, and is expected to exert a high level of insulation performance for a long time. Hydrofluoroolefin gas with low global warming potential is also used as a foaming agent.