Excuse me, teachers, is sofa foam made of polyurethane foam? Thank you, great God to help ah!
The polyurethane foam has two reaction is a cross-linking reaction, but gas reaction (or physical or chemical), polyurethane foam foam structure with a closed, there are holes, and the reaction is exothermic reaction, cause retraction contraction and internal obturator gas 1. 2, the gas escape of the opening, the crosslinking reaction has not been completely completed.
Badly matched hole. Polyurethane foams are hard and soft. The hard stuff is usually used for insulation, and it's kind of like the packing foam in the fridge (white one). Soft, can be seen everywhere, sofa, cushion, mattress. Polyurethane foam has hard foam and soft foam.
Polyurethane foam material has certain hardness, generally polyurethane rigid foam, such as solar, refrigerators and other interlayer insulation is used in rigid polyurethane foam; buried pipeline, polyurethane insulation board, pipe insulation products for polyurethane rigid foam. Polyurethane foam soft after foaming, generally soft foam, such as made of polyurethane cushion, sports equipment.
