Advantages of polyurethane spraying:
1. For substrates of various shapes, spray foaming can be directly performed without expensive mold manufacturing costs;
2. The shape of the foam insulation layer formed by spray foaming is consistent with the shape of the base material; it has no seams and has good thermal insulation effect; there is a dense protective layer on the outside of the foam layer, which can better protect the internal core material and is easy to carry out. Painting and further finishing of exterior surfaces;
3. High production efficiency, especially suitable for heat insulation treatment of large-area and special-shaped objects, fast molding speed and high production efficiency;
4. It has strong bonding ability and can bond firmly on concrete, masonry, wood, steel, asphalt, rubber and other surfaces;
5. The thermal conductivity can reach 0.017-0.022W/m.k, which is lower than rock wool, glass wool, polystyrene board, extruded board and other building insulation materials;
6. Strong hydrophobicity, with a hydrophobic rate of over 95%;
7. Sealing performance: No cavities and no seams, completely wrapping the building's outer envelope, effectively preventing wind and moisture from flowing in and out of the building through gaps, achieving complete sealing;
8. Dimensional stability is less than 1%, has certain elastic deformation ability, and elongation is greater than 5%.
