1. introduction
polyurethane flexible foam is a cellular polymer formed through the reaction of a polyol (typically a polyester or polyether polyol) with an isocyanate, usually toluene diisocyanate (tdi) or methylene…
1. introduction 🌟
polyurethane (pu) rigid foam is a widely used insulation material in the appliance industry, known for its excellent thermal insulation properties, lightweight nature, and structural strength. efficie…
