Vehicles for the purpose of refrigeration and heat preservation and transport vehicles equipped with refrigerators are called refrigerated vehicles.
Refrigerated trucks are mainly divided into polyurethane extruded board process and polyurethane foaming process. Although they are called polyurethane and have similar appearance, the thermal insulation effect, production and filling effect are far apart.
In order to achieve the same thermal insulation effect of polyurethane foam, the thickness of polyurethane extruded board must be much greater than that of polyurethane foam.
The strength requirement of polyurethane foam is greater than that of polyurethane extruded panel. However, due to different material characteristics, polyurethane foam itself is elastic. No matter cutting or anchoring, polyurethane foam panel can withstand a certain degree of extension requirements and local heavy blows: while polyurethane extruded board is a brittle material and is not easy to bend. If extruded board
The process control is not good, and the stress on the plate is too concentrated, which is easy to cause damage and cracking.
Polyurethane foam is a porous material with network structure. The framework of cell wall is uniform and stable, and has better structural stability and physicochemical properties
In general, polyurethane foaming is equivalent to upgrading a generation of technology in the field of polyurethane extruded board in the field of refrigerated truck. It takes precedence over polyurethane extruded board in terms of heat preservation and weight.
Post time: May-24-2022