What is the difference between rock wool sandwich board and polyurethane sandwich board?

Sandwich panels are one of the most commonly used building materials in construction and industry, providing thermal insulation, sound insulation, and structural strength. Rock wool sandwich board and polyurethane sandwich board are two common product options, they have obvious differences in material composition, performance characteristics and application scope.

Composition of materials

1.Rock wool sandwich board is composed of two parts: internal filling rock wool and external surface plate. Using high quality raw materials to produce and process non-combustible high density hydrophobic rock wool, with high quality basalt, diabolite as raw materials, after high temperature melting, high speed centrifugal pull fiber, and then add a small amount of additives such as binder, dustproof oil, hydrophobic agent made, with excellent fire performance, sound insulation and heat insulation performance, and sustainable recycling.

2.The material composition of polyurethane sandwich board is different from rock wool sandwich board. Polyurethane sandwich board adopts the new generation of polyurethane PIR pentane B1 foamed hard core material, excellent thermal insulation and fire resistance. With ultra-high temperature stability and fire rating, no Freon emissions, energy saving and environmental protection, it can be widely used in industrial building cold storage projects.

Performance Characteristics

1.For thermal insulation performance, rock wool sandwich board has low thermal conductivity, which can effectively isolate the influence of outdoor high or low temperature on indoor temperature. Rock wool as a filler is not easy to burn, with high temperature resistance, in the event of fire can play a good protective role.

2.The foam filling of polyurethane sandwich panels can provide better insulation effect and keep the building at a stable temperature. In addition, polyurethane has excellent bonding properties, which makes the overall performance of the sandwich board more stable.

Scope of application

1.Rock wool sandwich board is mainly suitable for external wall insulation, roof insulation and industrial plants and other places requiring high heat insulation and fire prevention requirements.

2.Polyurethane sandwich panels are more used in cold storage, refrigerator cars, food processing plants and other environments that need to maintain stable low temperature. Its good airtightness and excellent insulation performance enable it to effectively reduce energy consumption and maintain low temperature requirements.