Foam cell openers play a key role in polyurethane foam. They are mainly used to control the density and open cell structure of the foam, affecting the physical properties and application characteristics of the foam.
Controlling foam density: Foam cell openers promote the formation and stabilization of bubbles by introducing gas into the polyurethane mixture. These bubbles develop into a foam structure during the polymerization reaction, which determines the density of the foam. The type and amount of cell openers can adjust the density of the foam, from low-density foam to high-density foam.
Improving the thermal insulation properties of foam: The bubbles introduced by the foam cell opener can form a pore structure in the foam, which helps to reduce heat conduction and improve the thermal insulation properties of the foam.
Influencing the mechanical properties of foam: The addition of cell openers affects the mechanical properties of the foam, such as elastic modulus, compressive strength and tensile strength. By selecting the appropriate cell opener, the mechanical properties of the foam can be adjusted to meet the needs of different applications.
Adjusting the open cell structure of the foam: Different types and particle sizes of cell openers will result in different open cell structures, such as fine cells or large-pore foam.
Foam cell openers in polyurethane foam not only simply control the density of the foam, but also directly affect the thermal insulation performance, mechanical properties and cell structure of the foam. Therefore, when preparing polyurethane foam products, it is very important to select the appropriate cell opener and its addition amount.
