Photocuring organic silicon liquid coating material as well as preparation method and application thereof

Abstract

The invention discloses a photo-curing organic silicon liquid coating material as well as a preparation method and application thereof. The photo-curing organic silicon liquid coating material is prepared by taking linear polysiloxane, silicon resin, white carbon black and mercaptosilane as main raw materials. The mercaptosilane is subjected to condensation reaction with hydroxyl on the white carbon black through alkoxy on the mercaptosilane, so that the white carbon black is modified, structured agglomeration of the white carbon black due to the fact that the white carbon black contains a large amount of hydroxyl can be prevented, the surface of the white carbon black can contain high-activity mercapto, and cross-linking reaction between the white carbon black reinforcing agent and an organic silicon matrix is achieved. Meanwhile, active sulfydryl of sulfydryl silane and vinyl of linear polyorganosiloxane are subjected to click chemistry under ultraviolet irradiation to achieve normal-temperature cross-linking curing, so that the bottleneck that an existing organosilicone coating material needs a high-temperature condition for cross-linking curing is solved, and the energy consumption can be obviously reduced; meanwhile, thermal decomposition of the heat-sensitive material due to high temperature and residue of impurities such as decomposers and the like in the cross-linking and curing process can be reduced, and the coating material is endowed with more excellent mechanical, insulating and weather-proof properties and the like.

Description

technical field [0001] The invention belongs to the field of electrical insulating and protective polymer materials, and in particular relates to a light-curing organic silicon liquid coating material and a preparation method and application thereof. Background technique [0002] Silicone-coated fiber sleeves have been widely used in new energy vehicles, high-speed trains, electronic appliances, motor control and other fields due to their excellent properties such as temperature resistance, insulation, oil resistance, and flame retardant. [0003] Existing silicone rubber coated fiber sleeves are made of fibers braided into tubes, and then coated with silicone rubber on the outer wall of the tubes and processed by high-temperature vulcanization. Among them, the cross-linking curing process is carried out at high temperature (≥180°C) for a long time. This process not only consumes a lot of energy and damages the performance of the silicone coating material and its additives, ...

AI Technical Summary

Problems solved by technology

[0005] In view of the above-mentioned technical status, the present invention provides a light-curing silicone liquid coating material and its preparation method and application.