The role of polyurethane defoamers and what foam problems can they solve?
Polyurethane (PU), a type of polymer, possesses a thermoplastic linear structure with good stability, chemical resistance, and resilience.
What are the raw materials of polyurethane foam?
Polyurethane foam(PU foam) primarily consist of polyurethane as their main component. The raw materials primarily include polyisocyanates and polyols, with the addition of various additives, the most crucial of which are a series of foaming agents related to the foaming process.
What are the typical types of catalysts used in polyurethane production?
Polyurethane synthesis and its associated materials generally employ two main categories of catalysts: tertiary amine catalysts and organometallic catalysts.
What is the chemical ratio to make polyurethane foam？
The chemical ratio used to make polyurethane foam can vary depending on the specific formulation being used, but typically, the ratio is between 1:1 to 2:1 by weight of the two main components – polyol and isocyanate.