Photocured polysilazane coating and preparation method thereof

Abstract

The invention discloses a photocured polysilazane coating which consists of the following components in parts by weight: 40-60 parts of vinyl branching modified silazane, 1-10 parts of a photoinitiator 1173, 5-15 parts of butyl acetate, 10-30 parts of spherical silicon powder, 0.1-1 part of a leveling agent, 0.1-1 part of a defoaming agent and 0.1-1 part of a dispersant. The invention further provides a preparation method of the photocured polysilazane coating. The photocured polysilazane coating disclosed by the invention can be cured with UV (Ultraviolet Rays), is high in curing speed and isenergy-saving and environmentally friendly, and a coating film is good in stability and excellent in thermal resistance, weather resistance and solvent resistance.

Description

technical field [0001] The invention relates to a photocurable polysilazane coating and a preparation method thereof. Background technique [0002] Polysilazane coatings can adhere closely to smooth substrates such as metals, minerals, glass, ceramics, and organic materials. The cured film-forming material has high hardness, hydrophobicity, anti-corrosion, UV transparency, and thermal stability. And heat resistance and other excellent properties, so it has broad application prospects in the fields of hydrophobic, anti-corrosion and anti-fouling, temperature resistance, high-temperature ceramics and non-stick coatings. [0003] In practical application, the polysilazane resins used in the existing polysilazane coatings still have outstanding problems, which are specifically manifested in: [0004] 1) The silazane resin used in existing polysilazane coatings generally requires high temperature (150-250°C) curing and long curing time (usually 24 hours or more), which is inconv...

AI Technical Summary

Problems solved by technology

[0004] 1) The silazane resin used in existing polysilazane coatings generally requires high temperature (150-250°C) curing and long curing time (usually 24 hours or more), which is inconvenient for large-scale construction;

[0005] 2) Silazane resin usually needs to be copolymerized or blended with other resins to achieve chemical or physical modification of polysilazane resin, but when using traditional epoxy, acrylic and other resins for modification, it will undoubtedly affect the Adverse effects on the properties of polysilazane resins