A kind of anti-sticking ice coating for mine car and preparation method thereof

Abstract

The invention discloses an anti-sticking ice coating for a mine car and a preparation method thereof, and belongs to the technical field of anti-sticking ice coatings. The anti-sticking ice coating for a mine car is composed of A component and B component; wherein the A component is composed of Composed of the following raw materials: epoxy-modified silicone resin, functional filler, dispersant, wetting agent, active leveling agent, etc.; component B is composed of the following raw materials: crosslinking agent and second solvent; mine car of the present invention The anti-sticking ice coating uses epoxy modified silicone resin as the base material. The base material not only has the advantages of low temperature resistance and strong hydrophobicity of silicone resin, but also is modified by epoxy resin. Due to the unique epoxy resin Active groups such as radicals, hydroxyl groups, ether bonds, etc., so the epoxy resin modified silicone resin can significantly improve the adhesion of the coating.

Description

technical field [0001] The invention relates to the technical field of functional coatings, in particular to an anti-stick ice coating for mining vehicles and a preparation method thereof. Background technique [0002] Most mining enterprises in my country adopt the method of water mining. The mining trucks are exposed to low-temperature open-air environment during the coal transportation process between the coal mining well and the coal unloading yard. Freezing and sticking will occur in the mining trucks, and the farther the transportation distance is, the more serious the freezing will be. During the repeated coal transportation process, the accumulation of frozen and sticky layers in the mine car will seriously affect the coal transportation efficiency of the mine car. Especially when the freeze and stick of the mine car is serious, the mechanical cleaning of the frozen layer in the coal unloading process will also cause great damage to the mine car. ; In order to avoid th...

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Problems solved by technology

[0002] Most of the mining enterprises in my country adopt water mining method. The process of coal transportation between the coal mining shaft and the coal unloading yard is exposed to the low-temperature open-air environment, and the inside of the mine car will freeze and stick, and the farther the transportation distance is, the more serious the freezing will be. The accumulation of frozen sticky layer in the mine car during repeated coal transportation will seriously affect the coal transport efficiency of the mine car, especially when the freeze sticky situation of the mine car is serious, the mechanical cleaning of the frozen layer in the coal unloading process will also cause great damage to the mine car ;In order to avoid the problem of freezing and sticking mine cars, the coal yard has also invested a lot of manpower and material resources, but the solution effect is not obvious;

[0003] At present, there are two main types of anti-icing coatings: the first is hydrophilic anti-icing materials, and its anti-icing principle is that the hydrophilic coating can absorb a large amount of water, and additives such as ethylene glycol are added to lower the freezing point, thereby reducing the freezing point. The anti-icing effect is achieved, but the range of temperature and humidity used by hydrophilic materials is limited, and the anti-icing effect will be reduced or even lost after contamination; the second is hydrophobic anti-icing materials, the principle of which is (super) hydrophobic substrate The surface has a low surface energy, and the water droplet cannot spread completely on the smooth hydrophobic substrate surface, and the contact area between the water droplet and the substrate surface is small. When the contact angle of the water droplet on the substrate surface decreases with the decrease of the substrate surface energy When the temperature increases, the contact area between the water droplet and the substrate surface gradually decreases, thereby reducing the heat conduction between the substrate surface and the water droplet, and delaying the solidification of the water droplet. However, the mechanical properties of the surface of the material are not good. Easily damaged, as the time grows and the temperature drops, the hydrophobic material loses its anti-icing effect

[0004] Silicone resin has a structure of silicon-oxygen bond (-Si-O-) as the main chain, which has strong thermal stability and hydrophobicity. Chemical bonds will not break or decompose under irradiation, and can be used in a wide temperature range; on the other hand, the structure of silicone resin has strong hydrophobicity, its surface tension is very low, and its structure is extremely stable, even in water for a long time It is one of the ideal materials for anti-icing adhesion coatings, but its application has been limited due to the poor adhesion of silicone resin for a long time, and how to improve the adhesion of silicone resin has become a current issue. Problems that technicians need to solve urgently

[0005] Therefore, the current anti-icing coatings have their limitations. When the ambient temperature drops to a very low level, ice freezes on the surface of the coating for a long time and cannot be removed, or the surface of the substrate is damaged, the coating will lose its anti-icing effect. , and in winter in our country, because mine cars in coal mines exist at low temperature for a long time, and the adhesion of the current anti-sticking ice coatings is generally low, and the scratch resistance is not good, there is no suitable anti-sticking ice coating for mine cars

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