At present, the thermal insulation animal husbandry cowshed is mostly steel structure, and the ceiling is single-layer colored steel tile. The traditional ceiling color steel tile is generally compounded with white polystyrene foam insulation board with a thickness of 10 cm, and the insulation effect is not very good. This is because the thermal conductivity of polystyrene foam board is relatively high (above 0.035 W/(m k)), and there are gaps between foam boards, so the temperature leakage is very serious, and the comprehensive actual thermal conductivity is generally higher than 0.05.
The new polyurethane spraying thermal insulation material is a new synthetic material with thermal insulation and waterproof function, with low thermal conductivity, only 0.022-0.024 W/(m k), and the thermal insulation effect is 2-3 times that of polystyrene board. It is an excellent thermal insulation material among all thermal insulation materials at present.
Polyurethane is foamed in situ. Polyurethane equipment can be used for spraying and pouring, and the operation is convenient. It can be used for any complicated roof structure. Usually, 3-4 people operate the construction, and more than 20 cubic meters can be sprayed every day. According to the thickness of 30 mm, more than 700 square meters can be sprayed every day, which is ten times more efficient than laying traditional materials. At the same time, it also reduces the labor intensity, improves the working environment and reduces environmental pollution.
Rigid polyurethane foam is a kind of compact microcellular foam, with a closed cell rate of over 92%. It has smooth self-crust and is an excellent waterproof material. Direct spray molding technology is adopted in the construction, which makes the polyurethane rigid foam layer completely impermeable and has no flat joint, thus fundamentally eliminating the possibility of roof water penetrating along the joint. So as to achieve the waterproof and anticorrosive effects.
Has that advantage of polyurethane spraying heat insulation:
Unique thermal insulation performance, high efficiency, energy saving and environmental protection; Light weight, reducing load;
Excellent waterproof performance, heat preservation and waterproof;
Simple design, high efficiency, fast progress, good quality and long service life;
Adhesion: strong adhesion, can be firmly attached to concrete, masonry, wood, steel, asphalt, rubber and other surfaces;
Thermal conductivity: it can reach 0.0 17-0.022W/m.k, which is lower than building thermal insulation materials such as rock wool, glass wool, polystyrene board and extruded board.
Hydrophobic performance: the hydrophobic rate is above 95%;