Polyester finishing coat for colourful stainless steel plate of mobile phone shielding case and preparation method of polyester finishing coat

Abstract

The invention discloses polyester finishing coat for a colourful stainless steel plate of a mobile phone shielding case and a preparation method of the polyester finishing coat. The polyester finishing coat for the colourful stainless steel plate of the mobile phone shielding case is prepared from the following raw materials in parts by weight: 80-100 parts of unsaturated polyester resin, 2-3 parts of dibenzoyl peroxide, 5-10 parts of phenylethylene, 3-6 parts of butyl acetate, 0.2-0.4 part of dibutyltin dilaurate, 0.1-0.2 part of cobalt iso-octoate, 0.3-0.5 part of N,N-dimethylaniline, 3-5 parts of nano titanium dioxide, 5-10 parts of composite filler, 20-30 parts of phthalo blue, 0.4-0.6 part of Tego 750W wetting dispersant, 0.2-0.3 part of Ruifu L-520 defoaming agent and 0.5-0.8 part of BYK-340 levelling agent. The polyester finishing coat has high gloss, high adhesive force, high abrasive resistance and high hardness and is excellent in solvent resistance, water resistance, oil resistance, acid and alkali resistance, chemical resistance and weather resistance, film is full, surface can be polished, decorative property is high, flexibility is good, impact resistance is high, fragility is low, and the requirements of finishing coat for the colourful stainless steel plate of the mobile phone shielding case can be completely met.

Description

technical field

[0001] The invention relates to a polyester topcoat used for a stainless steel color steel plate of a mobile phone shielding cover and a preparation method thereof, belonging to the technical field of polyester paint. Background technique

[0002] The surface of the stainless steel color steel plate used for the mobile phone shield needs to be sprayed with a layer of polyester topcoat for protection and decoration. Although the paint film of polyester topcoat has excellent comprehensive performance, high hardness, hard wear resistance, high richness, heat resistance, acid and alkali resistance, oil resistance, solvent and various chemicals. However, there are still disadvantages such as poor flexibility and poor impact resistance, and it is easy to be brittle when stressed, resulting in damage to the paint film that is difficult to repair. Contents of the invention

[0003] The purpose of the present invention is to overcome the deficiencies of the prior a...