Polyurethane foam insulation board makes wall insulation and equipment insulation permanent and corrosion-resistant, and is the lightest and most convenient insulation material for construction. This product uses high-function polyether polyol and polymethyl polyphenyl polyisocyanate as the main raw materials, and is foamed by chemical reaction under the action of catalyst, foaming agent, surfactant, etc.
Polyurethane products have excellent characteristics such as light capacity, high strength, heat insulation, sound insulation, flame retardant, cold resistance, anti-corrosion, non-absorbent, simple and fast construction, etc. Indispensable materials such as plugging and sealing. It is recognized as the best thermal insulation material in the world today, and can be used for the roofs and walls of various buildings such as large industrial plants, warehouses, exhibition halls, gymnasium purification workshops and so on. It integrates heat preservation, heat insulation, load bearing and waterproof.
The isocyanate (PAPI) component is selected from Yantai Wanhua PM-200, which is fixed. As the amount of PAPI increases, the degree of cross-linking of the foam increases, and its strength and stiffness also increase, but if the amount of PAPI is too much, the foam will become brittle, and the core material is prone to cracks.
It is most important to choose polyether polyol first. Polyether polyol is one of the basic raw materials for composing polyurethane rigid foam, which affects the physical and mechanical properties, dimensional stability and foaming process performance of the foam core. After the polyether type is determined according to the initiator, hydroxyl value and viscosity, the content of potassium ions in the polyether is selected to be low.
It is advisable to choose the foam stabilizer with strong emulsifying ability. It mainly controls the size of the cell, maintains the stability of the cell, and prevents the cell from collapsing. The silicone foam stabilizer has a good effect on this, and its dosage can be adjusted within 1.5 to 2.5 (mass fraction) The type and dosage of the foaming agent have a direct impact on the physical properties such as the density and strength of the rigid polyurethane foam. .
Flame retardants can improve the fire resistance of foamed plastics, but flame retardants have a damaging effect on the foam during the foaming process. On the premise of ensuring the improvement of the flame retardant effect, the performance and dimensional stability of the foamed plastics are guaranteed.
Polyurethane Board Features:
Stability: Light weight, high strength, good dimensional stability. We produce intermittent panels, and the rigid polyurethane foam is tested for foam performance after one week of aging.
Strong adhesion: Polyurethane rigid foam has good adhesion strength to metals such as steel, aluminum, stainless steel, wood, concrete, asbestos, asphalt, paper, and most plastic materials such as polyethylene and polypropylene. The size of the bonding strength between the foam and the face material directly affects the practical effect of the composite board.
Superior thermal insulation performance: polyurethane rigid foam has high closed cell rate and extremely low thermal conductivity, so polyurethane rigid foam has the best thermal insulation performance among current building materials. The data shows that the use of polyurethane sandwich panels can save 60% of the heating cost of the operation compared to the external wall without thermal insulation.
