Introduction: The current development status of cold chain logistics indicates that problems such as insufficient supporting facilities and imperfect technology of cold chain logistics need to be solved urgently, and standardizing insulation and refrigeration technology can ensure the key link of transportation.

1. Transportation - the weak link of cold chain logistics

In recent years, cold chain logistics as an emerging industry is in a stage of vigorous development. The "State Information Center" said that under the data analysis, there is still a large space for development in terms of consumer demand and market size of China's cold chain logistics, and there are shortcomings such as uneven distribution of infrastructure, supporting facilities and technical level to be improved.

Among them, the front-end and back-end facilities of China's cold chain logistics are relatively imperfect, so that the goods can not be standardized insulation, moisturizing and refrigerating in the transportation process. Refrigerated truck is the most important means of transport in cold chain logistics, but the cost of refrigeration and insulation is high, and the transportation process has become the weak link in cold chain logistics. In particular, the long-distance refrigeration effect is not good, which will cause the quality of most products to decline, and even lead to the loss of product function.

2, the guarantee of refrigerated logistics vehicles - low temperature environment

Cold chain logistics vehicles need to maintain a low temperature environment, which is the key to maintaining the quality and freshness of goods, but also an important link in the operation of the entire cold chain logistics industry.

Insulation measures throughout the operation of refrigerated trucks. The refrigerated truck is composed of the walking part of the special car chassis and the thermal insulation body (such as polyurethane, color steel plate and other materials), the refrigeration unit and other components.

However, traditional thermal insulation materials such as polyurethane have insufficient temperature resistance and humidity and heat resistance, and the normal use temperature range is about -40~120℃; And can not be stable in the high-frequency oscillation environment for a long time.

Technology iteration is a problem that the development of cold chain logistics must face. What kind of material can not only solve the problem of traditional thermal insulation materials, but also further meet or even improve the thermal insulation needs of refrigerated trucks?

Throughout the market development of thermal insulation materials, in recent years, aerogel has played a prominent role in many fields such as petrochemical, transportation and so on.

The temperature range of conventional aerogel is about -200℃ to 650℃, and the temperature range of ultra-high temperature aerogel can reach 1000℃ or more. Aerogels used at high temperatures are generally surface modified or designed for specific applications to maintain stability and durability.

The reason why aerogel has the performance of thermal insulation and cold preservation is mainly because it has a very low thermal conductivity and extremely high porosity. Based on the thermal insulation performance of aerogel, it can effectively block the heat transfer and radiant heat, prevent the loss of heat in the car, and keep the temperature in the refrigerated truck stable.

At the same time, aerogel composite products can be installed in the interior of the incubator of the vehicle as a thermal insulation layer to protect the cooling medium from external heat interference and maintain the overall low temperature state in the carriage.

The development of cold chain logistics is of course there are shortcomings, so we should be targeted to solve the problems of insufficient supporting facilities and imperfect technology, standardize insulation and refrigeration technology, and ensure the key links of cold chain logistics transportation, the market needs technology iteration and resource integration. By strengthening the infrastructure construction of cold chain logistics, the operational efficiency and transportation quality of cold chain logistics are further optimized.