Refrigeration equipment for household appliances and food industries
PU rigid foam is the most ideal thermal insulation material for freezing and refrigerating equipment, and can achieve ideal thermal insulation efficiency.
The refrigerators and freezers that use PU rigid foam as the thermal insulation layer have a thin thermal insulation layer. Under the same external dimensions, the effective volume is much larger than when other materials are used as the thermal insulation layer, and the weight of the electrical appliance is reduced.
PU rigid foam is also used in the manufacture of portable incubators for transporting biological products, medicines and foods that need to be kept warm and fresh.
The freezers and large-scale cold storages of marine fishery, meat and other food processing industries also use polyurethane foam plastics as insulation materials, and are mostly assembled with rigid foam metal sandwich panels, which are convenient and fast.
Industrial Equipment and Pipeline Insulation
Many brewing, chemical, storage and transportation enterprises have different heat preservation and cold preservation.
Storage tanks and pipelines are commonly used equipment in industrial production, and are widely used in petroleum, natural gas, oil refining, chemical industry, light industry and other industries.
As a pipeline insulation material, PU rigid foam is widely used for thermal insulation of pipelines in crude oil transportation pipelines and petrochemical industries. It has replaced materials with high water absorption such as perlite.
The hot water pipes of central heating projects in cities and factories generally use PU rigid foam as the thermal insulation material, which requires long-term resistance to 100 °C, and the main pipeline requires resistance to 130 °C or even higher temperatures. Some high temperature resistant PU rigid foam products have been used. developed for such use.
Transportation and Aquatic Materials
PU rigid foam is currently widely used in automotive headliners and interior parts. It used to be a composite of fabric or polyvinyl chloride film and polyurethane soft foam. At present, PU rigid foam material is basically used.
Rigid polyurethane structural foam is used in a variety of automotive components such as door panels, trunk lids, engine covers, and more. The elastic polyurethane semi-rigid foam is used as a shock absorber part for automobiles. The train car adopts PU rigid foam for thermal insulation, and the effect is remarkable.
PU rigid foam is also used as thermal insulation material for refrigerated trucks, refrigerated containers, etc., which can ensure that the temperature of frozen food is within the required range during long-distance transportation. It can also be used as a thermal insulation material for air-conditioned cabins.
Military and Aerospace
Polyurethane foam can also be used as the matrix of absorbing materials in echo-free anechoic chambers, and is often used in national defense and related research fields.
Polyurethane foam absorbing materials can also be used on the fuselage and wings of stealth aircraft, and can be used to build echo-free boxes to cover reflective objects in the test environment, such as radar antenna bins, antenna brackets, turntables, test stands, etc.
Polyurethane foam is also used as a camouflage material for military facilities, which can simulate the natural surface state and achieve the camouflage purpose of "concealing the truth and showing the false".
PU rigid foam is also used as a thermal insulation material for aerospace aircraft and the like. PU rigid foam has excellent temperature resistance, cold resistance and thermal insulation performance in the temperature range of -45~100 °C, and is very suitable as a thermal insulation material in the aerospace industry.
