In the field of building materials, polystyrene board is a commonly used insulation material, and there are some key differences between thermosetting polystyrene board and ordinary polystyrene board.

From the perspective of chemical structure and performance stability, thermosetting polystyrene board has a unique molecular structure. During the heating process, its molecules can undergo chemical reactions to form a three-dimensional network structure, which makes its structure more stable. Once formed, even if heated again, it will not deform or soften like ordinary polystyrene board. Ordinary polystyrene board, on the other hand, has a relatively simple molecular structure. Under high temperature conditions, the molecular chains are prone to change, resulting in unstable performance and potential issues such as deformation and shrinkage, which can affect its insulation and structural properties.

In terms of fire resistance, thermosetting polystyrene board has good fire resistance. Due to its thermosetting nature, when exposed to an open flame, the thermosetting polystyrene board will quickly form a carbon fireproof layer on its surface, preventing the spread of flames and buying time for personnel evacuation and firefighting rescue. In contrast, ordinary polystyrene board has poor fire resistance, is prone to combustion when exposed to open flames, and produces a large amount of thick smoke, increasing the risk of fire.

In terms of environmental performance, the two are also different. Thermosetting polystyrene board usually uses environmentally friendly raw materials and production processes in the production process, with relatively low release of harmful substances and minimal impact on indoor air quality. Some production processes of ordinary polystyrene board may result in the residue of harmful substances, posing potential risks to the environment and human health.

In application scenarios, thermosetting polystyrene board is commonly used in buildings with high fire safety requirements, such as high-rise residential and commercial buildings, due to its stability and fire resistance. Ordinary polystyrene board is more commonly used in places where insulation performance is required, but fire protection requirements are relatively less stringent, such as some ordinary industrial plants, simple buildings, etc.

In summary, there are significant differences between thermosetting polystyrene board and ordinary polystyrene board in terms of structural stability, fire resistance, environmental performance, and application scenarios. In practical applications, it is necessary to choose suitable polystyrene board products according to specific needs.