Cold storage anti-corrosion anti-frost coating effectively solves the problem of frost corrosion

China Paint Online News Information:
In the cold storage, when the cooling pipe top system low sub-air dew point, food and air moisture will be condensed on the pipe wall, if the pipe wall temperature is less than 0 degrees C, it will condense into a layer of cocoon. Anti-corrosion frost coating experts pointed out that the cooling tube frost layer thermal conductivity is more than 80 times smaller than steel, the presence of the frost layer will obviously affect the cooling pipe heat transmission coefficient. For fin tubes, the effect of the frost layer is more obvious, it not only increases the thermal resistance, but also reduces the heat transmission area of the fin tube, the flow of fins to ask the air is blocked, and the heat coefficient on the outside side of the tube is reduced. According to the experiment, when the temperature difference between the two sides of the cooling tube group is 10 degrees C, after one month of work, the heat transmission coefficient is only about 70% of the original. Both the frost layer and the oil layer make the heat transfer condition worse, the refrigeration efficiency decreases, the electricity consumption increases. Therefore, it is necessary to do a good job of defrosting in a timely manner.
According to the frosting condition of the cold storage cooling tube, the coating of anti-ice coating, also known as anti-ice paint, is the independent production of high-tech special functional coatings, mainly by the alternating arrangement of multi-inline inorganic-organic interoperability network polymer (IPN) substation and surface-modified treatment of highly active nano-ice and snow additives. Anti-ice paint is suitable for a variety of coating methods, can be self-curing at room temperature, in the surface of protected objects to form a dry coating film of less than 30 m, can be anti-ice and snow attachment, at the same time with anti-corrosion, wear-resistant, anti-aging, surface self-cleaning and other composite functions, can be used for aircraft, ships, power lines, telecommunications lines, transportation and other anti-snow non-adhesive structure.
Anti-frost coating, anti-ice paint, coated with alternating multi-inline segment inorganic-organic interoperability network polymer (IPN) substation and surface-modified treatment of high-activity nano-ice and snow additive composition, coating presents shell-core double-layer structure. This structure not only shows the excellent performance of the contact angle and rolling angle of the anti-ice coating, but also reflects certain elastic structure characteristics, and actively reduces the contact area with snow and water when covering snow and water, with less friction. After the anti-ice coating is applied to the solid surface, a thin layer of hydrophobic molecular layer with special orientation can be formed on the surface of the material in need of protection, which is essentially equivalent to building a self-cleaning separation film between the protected surface and the ice crystal.
acceptance test data show that anti-ice paint can withstand low temperature -45 degrees C or more, water repugnion angle of 160 degrees, rolling angle of less than 8 degrees, coating coating tolerance after bending degrees can be up to the lower 10 m deformation, surface to water contact angle greater than 105 degrees, surface can be less than 20x10-3N/m. Compared with ordinary glass materials, the sliding properties of water are increased by 6 times, the sliding time is reduced by 4 times, the sliding properties of snow are increased by 4 times and the sliding time is reduced by 3 times.
reason for the slow decline in cold storage temperature is the low heat transmission efficiency of the evaporator, mainly due to the thick layer of frost on the surface of the evaporator or excessive dust accumulation. Because the surface temperature of the cold storage evaporator is mostly lower than 0 degrees C, and the humidity of the reservoir is relatively high, the moisture in the air is very easy to frost on the surface of the evaporator, and even freeze, affecting the heat transmission effect of the evaporator, painting anti-ice paint effectively solves the problem of cooling tube frosting and corrosion prevention.