With the development of China's economy and the continuous improvement of people's living standards, the consumption demand for refrigerated food has increased rapidly, so the cold chain construction is heating up rapidly. Refrigerated containers and refrigerated insulated trucks are important storage and transportation tools for cold chain logistics, connecting thousands of households and related to people's lives closely. Because polyurethane rigid foam has the advantages of low density, high specific strength, good thermal insulation performance, easy molding, good bonding performance, etc., so it is the first choice for thermal insulation materials in the application field, and it is also the key to improving the effect of cold chain preservation, and has made great contributions to energy conservation and emission reduction.

Introduction to the production process of polyurethane rigid foam for refrigerated containers and refrigerated insulated trucks:

The first is the on-site pouring integrated molding method, that is, the polyurethane liquid raw material is poured into the insulation interlayer cavity by using a high-pressure perfusion machine, and the foaming is solidified;

The second is the block cutting and spelling method of the plate, that is, the large bubble formed by foaming in the large bubble mold is cut into a plate of corresponding thickness, and the plate and the inner and outer skin of the box are bonded and formed with adhesive.

Influencing factors of the performance of polyurethane rigid foamfor refrigerated containers and refrigerated insulated trucks:

Thermal insulation performance of the insulation material itself;

The molding process and whether it causes a thermal bridge;

The degree of tightness of the combination of the insulation material and the shell in the box;

Weather resistance;

Foaming process control;

At the same time, there are some other influencing factors, such as environmentalprotection restricts on the use of ozone-depleting substances, whether it is necessary to meet the flame retardant characteristics of automotive materials, etc

Qichen specializes in the production of polyuretahne rigid foam Blend Polyols for buildings, cold storages, cold chain logistics, pipelines, and plates insulation. While providing customers with customized raw materials, we also solve a series of technical problems for customers.