Super Insulation Boards for Container Houses
The commonly used super insulation board materials for container houses mainly include expanded polystyrene (EPS) foam boards, polyurethane foam, rock wool boards, glass wool blankets, and vacuum insulation panels (VIPs), among others. Each material has its own characteristics and is suitable for different scenarios.
Polyurethane foam is an excellent choice for insulation in container houses. Its high closed-cell content gives it exceptional thermal insulation performance, with a thermal conductivity coefficient ranging from approximately 0.022 to 0.028 W/(m·K). The low thermal conductivity means that heat has difficulty passing through it, effectively preventing the exchange of indoor and outdoor heat and maintaining a stable indoor temperature. For container houses with high insulation requirements and long service lives, such as those used for long-term residence or requiring a stable temperature environment, polyurethane foam is an ideal option. For example, in a 6-meter refrigerated container house, using a 7-centimeter-thick polyurethane insulation board in the middle of the wall panels, combined with 12-centimeter-thick insulation layers on the top and bottom, can achieve excellent thermal insulation performance.
Vacuum insulation panels (VIPs) offer even superior insulation performance. Their thermal conductivity coefficient is as low as 0.004 to 0.008 W/(m·K), making them one of the solid materials with the lowest known thermal conductivity. Moreover, they are thin, allowing for a reduction in the thickness of the insulation layer while maintaining the same insulation effect, thus saving space. This makes them particularly suitable for special container house projects with extremely high insulation requirements, such as containers in cold chain logistics that need to maintain strict low temperatures and laboratories with stringent temperature precision requirements, significantly improving energy efficiency.
In addition, expanded polystyrene (EPS) foam boards are cost-effective and have some insulation properties, but their insulation performance is slightly inferior to that of polyurethane foam and VIPs. Rock wool boards and glass wool blankets, on the other hand, have good fire resistance and some thermal insulation capabilities, and are also used in container houses where fire resistance requirements are high and insulation needs are not extremely demanding.
