The properties of PU foams strongly depend on the size and type of pores. Silicone surfactants are used to control these pores in the production of PU foams.
The silicone surfactants improve the compatibility of the individual components with each other and reduce the surface tension of the overall system. In the production of PU foams, the silicone surfactants promote nucleation and prevent the coalescence of the gas bubbles. In the end, cell opening can be achieved by suitable selection of the silicone surfactant, or closed cells can be realised.
BCD Chemie markets silicone surfactants from The Dow Chemical Company under the brand name VORASURF™ Polyurethane Additives
. These are proven surfactants for stabilising polyurethane foams. The ample VORASURF™ portfolio includes surfactants for e.g. flexible viscoelastic foams, microcellular foams, rigid foams, moulded foams and assembly foams. There is a VORASURF™ polyurethane additive for every requirement profile.