Dimensional Stabilising Additives for Flexible Polyurethane Foams

Dimensional Stabilising Additives for Flexible Polyurethane Foams 

Gary D. Andrew, Jane G. Kniss, Mark L. Listemann, Lisa A. Mercando, James D. Tobias and Stephan Wendel 

The formation of moulded foam is a complicated chemical process which involves several reactions occurring simultaneously. There are rapid volume and temperature increases and the concurrent development of phase separated polymer networks. To understand how foam properties can be affected by catalyst and surfactant chemistries several techniques are used to identify key performance benefits and issues. A force to crush 

The real challenge in polyurethane foam formation is to control the chemical and physiochemical processes up to the point where the material finally sets. The sequence and the rate of the chemical reactions are predominately a function of the catalyst and the reactivity of the basic raw materials, polyol and isocyanate. The physiochemical contribution to the overall stability and processability of a system is provided by the silicone surfactants. Optimum foaming results will be achieved only if the correct relationship between chemistry and physics exists [4]. 

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Dimensional Stabilising Additives for Flexible Polyurethane Foams 1.3.2.2a Standard Physical Properties... 

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