Water-based high-solid antistatic coating and preparation method thereof

Abstract

The invention discloses a water-based high-solid antistatic coating and a preparation method thereof. The coating comprises the following raw materials: hydroxyl polyurethane resin, conductive filler, functional powder, a functional additive, a coalescing agent, a pH modifier and the balance of water; the functional powder comprises carboxyl polyester resin with the acid value greater than 100, carboxyl polyester resin with the acid value of 25 to 100, and carboxyl polyester resin with the acid value smaller than 25, wherein the weight ratio of the three kinds of carboxyl polyester resin is (1-2):(1-2):(1-2). The water-based high-solid antistatic coating is characterized in that hydroxyl polyurethane water-base resin, water-based conductive filler and carboxyl polyester resin powder different in acid value gradient are compounded into a whole through cross-linking reaction, so that a compact film can be formed. The film formed by the coating has high solid content and good antistatic performance, has good chemical resistance, water resistance and excellent physical properties at the same time, and can be applied to the field of packaging and electromagnetic shielding of electronic products, furniture and the like.

Description

technical field [0001] The invention belongs to the field of paint science and technology, in particular to a water-based high-solid antistatic paint and a preparation method thereof. Background technique [0002] In recent years, a large number of electronic products have been damaged by static electricity every year, and the loss has reached more than 10 billion US dollars. As far as furniture is concerned, especially in the dry autumn and winter seasons, static electric shocks are prone to numbness, and furniture is also easily stained and dirty due to electrostatic adsorption. [0003] Oil-based paint products contain a large amount of benzene, toluene, xylene and their derivatives, which have high VOC emissions and directly endanger human health. Heavy pollution and serious damage to the environment. Oil-based paint is a highly flammable item, and there are great safety hazards in the process of storage and transportation. With the promulgation of relevant laws and r...

AI Technical Summary

Problems solved by technology

At present, more antistatic fillers such as conductive carbon black, graphite, metal and metal oxide powders are quite different from polymer structures, and poor dispersion makes it difficult to form a homogeneous system, which affects conductivity and coatings. physical properties

[0005] Due to the low solid content of ordinary water-based coatings, the fullness of the paint film is not enough, resulting in poor visual effects of furniture and other finished products

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