Polyurethane foam fillingThe full name of the agent is one-component polyurethane foam caulking agent. Commonly known as foaming agent or foam glue, the one with high viscosity is polyurethane foam adhesive
Single group One-part polyurethane foam (OCF) is a product that is a cross-combination of aerosol technology and polyurethane foam technology. It is a special polyurethane product that fills polyurethane prepolymer, foaming agent, catalyst and other components into a pressure-resistant aerosol can. When the material is sprayed from the aerosol can, the foamy polyurethane material will rapidly expand and solidify with the air or moisture in the matrix in contact with it. The reaction forms a foam. The cured OCF foam has various functions such as caulking, bonding, sealing, heat insulation, sound absorption, and waterproofing. It is an environmentally friendly, energy-saving, and easy-to-use building material. It can be used for sealing leaks, filling gaps, and fixing adhesives. Knot, thermal insulation and sound insulation, especially suitable for sealing, plugging and waterproofing between plastic steel or aluminum alloy doors, windows and walls.
Foaming agent is a waterproof sealing material. Why do some of the foaming agents on the market now leak?
The reason why the foaming agent is waterproof is that its cells have a closed-cell structure. The closed-cell ratio of its internal structure must reach 80% to play a waterproof and thermal insulation role. However, some manufacturers are driven by interests. , deliberately reduce costs, add fillers, and increase the amount of white material. The product produced in this way not only has a low foaming volume but also shrinks by more than 50%, so I thought of adding a pore opening agent to open the foam, thus solving the shrinkage problem. Problem, but the foam is inelastic and leaky, and has little receptive capacity, which will pose a safety hazard in the future.
