Foaming Agent Comparison
Physical Foaming Agents: Hydrocarbons (Pentane, Cyclopentane) - Polystyrene (EPS), Rigid Polyurethane Foam
Halogenated Hydrocarbons: HFCs, HFOs - Rigid Polyurethane Foam, Spray Foam
Inert Gases: CO₂, N₂ - Flexible Polyurethane Foam, Rubber, EVA
Chemical Foaming Agents:
Inorganic: Sodium Bicarbonate, Ammonium Bicarbonate - Rubber, Plastics, Food
Organic: Azodicarbonamide (ADC), OBSH - PVC, EVA, PE, PP, Rubber, etc.
Key Additives: Surfactants, Silicone Surfactants - Polyurethane Foam (for stabilizing foam cells)
