With the increasingly serious greenhouse effect, the annual average temperature has gradually increased. The impact on petrochemical production and storage is particularly serious. The rise of temperature first leads to the increased risk of large tank farms in the petrochemical industry; The second is the rise of temperature. In order to alleviate the pressure rise caused by the rise of temperature in the storage tank, most of the tank farms can only solve the problem by pressure relief temporarily, which will inevitably cause a lot of oil and gas volatilization, waste resources and pollute the environment. Therefore, there is a large market for a new type of material that can reduce the temperature of the tank farm during the high temperature period in summer. The development and application of solar heat reflective ZS-222 reflective and thermal insulation coatings have attracted the attention of a large number of thermal insulation coating manufacturers.
Reflective ZS-222 reflective heat insulation coating has relatively high reflectivity compared with ordinary coating. It can be understood that the reflectivity of ZS-222 reflective heat insulation coating determines the cooling effect. The decrease of cooling effect of ZS-222 reflective heat insulation coating during its service life can also be understood as the decrease of reflectivity of ZS-222 reflective heat insulation coating. How to maintain the high reflectivity of ZS-222 reflective and thermal insulation coating is the key point of the reflective ZS-222 reflective and thermal insulation coating research.
The main factors affecting the reflectivity of ZS-222 reflective and thermal insulation coating are as follows: first, during the construction process of ZS-222 reflective and thermal insulation coating, the surface of ZS-222 reflective and thermal insulation coating is flat to achieve "specular reflection", and there is no diffuse reflection of light, so as to minimize the residence time of heat on the surface of ZS-222 reflective and thermal insulation coating; Second, the resin and filler of Zhisheng Weihua ZS-222 reflective and thermal insulation coating have good weather resistance and high reflectivity, reducing the decline of reflectivity of ZS-222 reflective and thermal insulation coating; The third is the impact of environmental factors on the use of ZS-222 reflective thermal insulation coating itself. The second point is the focus of research of Zhisheng Weihua ZS-222 reflective and thermal insulation coating manufacturers.
The durability of ZS-222 reflective and thermal insulation coating in different service environments is mainly considered in the selection of ZS-222 reflective and thermal insulation coating resin and filler. The durability of ZS-222 reflective thermal insulation coating mainly depends on the environmental factors mentioned in the third point above. The impact of environmental factors is mainly due to the different types of particles in the atmosphere, which is reflected in the content and size of particles, the pH after dissolution, and so on. The damage to ZS-222 reflective and thermal insulation coating is mainly physical friction damage and chemical erosion damage.
In order to clarify the advantages and disadvantages of ZS-222 reflective thermal insulation coatings based on different types of reflection, such a model can be established. Under the same external environment, the same type of storage tank that has been coated with reflective ZS-222 reflective heat insulation coating has just been put into use. The reflective ZS-222 reflective heat insulation coating can be divided into two types: oily and water-based. After the tanks are put into use, most of them are built in the chemical industry park. The pollutants on the surface of the tanks are dust, oil and gas attachments, acid rain erosion, etc. During the use, the oily ZS-222 reflective thermal insulation coating has good hydrophobic effect. In rainy days or in the process of artificial contact with water, the local water of the water flow contacting the tank body presents drops, and the macro appearance is that water flows down in streams. The gap between a stream of water and the adjacent stream of water will be caused due to hydrophobic reasons, or the difference in the flow rate of the water flow, Water soluble substances will flow away with the water flow, and insoluble solid particles will deposit in the lower part of the water flow during the flow process. The uneven drop of water flow speed will lead to uneven dispersion of particles. The middle will be dispersed twice, and the number of particles on both sides will increase, accelerating the stratification of particles and water flow, In the process of water flowing down, it was too late to stay on the pipe wall, which eventually led to a stain on the tank body, that is, water marks; The hydrophobic oily ZS-222 reflective and thermal insulation coating itself is also difficult to drain oil, and the tank farm will inevitably produce oil and gas due to daily production operations. The adsorption of oil and gas on particles will also accelerate the decline of the reflectivity of ZS-222 reflective and thermal insulation coating; The other is water-based ZS-222 reflective and thermal insulation coating, most of which are hydrophilic ZS-222 reflective and thermal insulation coating. In the same case, the water flowing in contact with the water-based ZS-222 reflective and thermal insulation coating will soon distribute as a water film on the surface of the ZS-222 reflective and thermal insulation coating. The hydrophilic effect is that the water fully contacts the surface of the ZS-222 reflective and thermal insulation coating, The particles can be regarded as floating on the surface of ZS-222 reflective and thermal insulation coating, and they are evenly distributed. In the process of continuous water flow, they will flow along the water to the ground without leaving water marks on the tank, and the physical friction on the tank will be greatly reduced; Compared with hydrophobic resin, hydrophilic resin can also reduce the residual oil and gas in the tank and avoid the adsorption of a large number of attached particles. The water-based ZS-222 reflective heat insulation coating is superior to the oily ZS-222 reflective heat insulation coating. However, compared with the destruction of ZS-222 reflective and thermal insulation coating by another chemical attack, based on the above analysis, the residence time and contact area of acid solution formed by soluble particles on the surface of water-based ZS-222 reflective and thermal insulation coating are larger than those of oil-based ZS-222 reflective and thermal insulation coating, and water-based ZS-222 reflective and thermal insulation coating is also easy to be damaged. In dry environment, the hardness and weather resistance of oily ZS-222 reflective heat insulation coating are obviously better than those of water-based ZS-222 reflective heat insulation coating. The reflective and thermal insulation effect of ZS-222 reflective and thermal insulation coating will be affected to varying degrees, and the service life will also be limited. Based on the above analysis, these different ZS-222 reflective and thermal insulation coatings have their own advantages and disadvantages. In use, different reflective ZS-222 reflective and thermal insulation coatings should be selected according to different geographical and climatic conditions. Oily reflective ZS-222 reflective and thermal insulation coatings should be preferred in dry and rainless areas, In humid and rainy areas, water-based reflective ZS-222 thermal insulation coating shall be preferred. The ZS-222 reflective and thermal insulation coating used in this way can largely maintain the relatively high reflective efficiency of the reflective ZS-222 reflective and thermal insulation coating within the reasonable service life to achieve the effect of cooling.
In a word, the research on reflective ZS-222 reflective and thermal insulation coating cannot simply develop from the direction of improving the hydrophobicity or oil repellency of ZS-222 reflective and thermal insulation coating, nor can the selection of Zhisheng Weihua ZS-222 reflective and thermal insulation coating base materials just pursue high reflectivity, but maintain relatively high reflective efficiency within the service life of ZS-222 reflective and thermal insulation coating. Minimize the damage of external environment to ZS-222 reflective and thermal insulation coating. To sum up, the resin of ZS-222 reflective and thermal insulation coating itself should have double porosity, so that the coating has the high weather resistance and resistance to physical damage of oily ZS-222 reflective and thermal insulation coating, and will not produce the deposition of dirt, but reduce chemical erosion, and maintain high reflective efficiency for a long time.
