Anti-icing coating capable of easily removing icing at low temperature and preparation method thereof

Abstract

The invention relates to an anti-icing coating capable of easily removing icing at low temperature. The anti-icing coating comprises a component A and a component B. The component A comprises the following raw materials in parts by weight: 60-70 parts of fluorosilicone composite resin, 0.5-1 part of nanoscale polytetrafluoroethylene, 3-8 parts of castor oil, 6-10 parts of double-end vinyl silicone oil, 6-10 parts of organic silicon modified paraffin and 10-17 parts of a first diluent; and the component B comprises the following raw materials in parts by weight: 7-10 parts of a curing agent and 30-60 parts of a second diluent. The castor oil, the double-end vinyl silicone oil and the organosilicone modified paraffin are introduced into the silicon-fluorine composite resin, the components are good in compatibility and have a synergistic effect, the stress difference between the hard ice coating and the flexible coating is very large in the low-temperature environment, and ice can be easily removed under the low-temperature condition. Nanoscale tetrafluoroethylene wax is adopted to prepare certain slurry, and the slurry is distributed on the surface of the coating in a hemispherical or microspherical shape so that the whole coating has an extremely low friction coefficient, and the anti-icing effect at low temperature can be helped.

Description

technical field [0001] The invention belongs to the technical field of anti-icing coatings, and in particular relates to an anti-icing coating which is easy to deicing at low temperature and a preparation method thereof. Background technique [0002] Most of the existing anti-icing coating technology is to increase the water contact angle of the coating as the cutting angle and make it super-hydrophobic to prevent ice coverage. For example, the patent CN105001723A, but the actual use experience shows that simply increasing the water contact angle cannot prevent the ice from covering as people imagined. The ice-water mixture to the all-solid ice has completely lost the super-repellent and non-stick effect on liquid water, and the ice on the coating becomes thicker and harder to remove. [0003] There is existing technology to modify the coating by fluorinated oligosilsesquioxane to improve the hydrophobicity of the coating, and the microstructure of the patterned coating sur...

AI Technical Summary

Problems solved by technology

[0008] In order to overcome the defect that the anti-icing coating in the prior art is difficult to remove due to freezing at low temperature, the present invention mainly solves the problem of deicing from the perspective of stress difference between layers while paying attention to hydrophobicity

Among the many types of silicone oils, through testing, double-ended vinyl silicone oils with obvious anti-icing effects were selected, which cooperate with silicone modified paraffin wax to provide a lubricating surface in low temperature environment; at the same time, polytetrafluoroethylene wax Processing to the nanometer level, in addition to solving the problem of PTFE wax sinking due to the high specific gravity of the film during construction, at the same time, the nanometer-level PTFE wax is distributed on the surface of the coating in a hemispherical shape, so that the entire coating has an extremely low coefficient of friction

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