Preparation method of aluminum-doped zinc oxide modified conductive coating

Abstract

The invention discloses a preparation method of an aluminum-doped zinc oxide modified conductive coating. The aluminum-doped zinc oxide modified conductive coating is prepared from raw materials including aluminium hydroxide, zinc oxide, dihydromethyl propionic acid, dibutyl tin dilaurate, quartz sand, styrene, sodium bicarbonate and the like. Due to characteristics of excellent electrical property and low price of aluminum-doped zinc oxide powder, the aluminum-doped zinc oxide powder is used as conductive filler, polycaprolactone diol and the like is used as coating base liquor, the filler issubjected to surface treatment by a silane coupling agent, the raw materials including the styrene and the like are polymerized to form polystyrene organic microspheres, the polystyrene organic microspheres are blended with the conductive filler, thus, microscopic pores of the coating in a solidifying process are filled with the microspheres, the adhesive force of the coating to a coating matrixis increased, the obtained coating has excellent conductive property, and meanwhile has excellent physical property, the source of the raw materials is extensive and the raw materials are low in price, the application field of the conductive coating is expanded effectively, and the practical value is high.

Description

technical field [0001] The invention relates to the technical field of paint materials, in particular to a preparation method of aluminum-doped zinc oxide modified conductive paint. Background technique [0002] In recent years, with the rapid development and popularization of computers and telecommunications, the electromagnetic radiation in the living and working environment of human beings has become increasingly serious, and the resulting electromagnetic wave interference has brought many negative effects on the normal operation of electronic equipment and human physical health. . In order to prevent electrostatic interference and electromagnetic wave interference, various antistatic and electromagnetic shielding materials have been developed since the middle of the 20th century. In recent decades, the focus of research has shifted more to conductive coatings, which have become the best among conductive materials due to their convenience, light weight, space-saving and ...

AI Technical Summary

Problems solved by technology

Generally speaking, there are two main deficiencies in the traditional conductive coating preparation technology. One is that the raw materials of conductive fillers are not ideal, which is manifested in unstable conductivity and high price; the other is that the conventional carbon-based fillers are dark in color and poor in decorative performance. , so it is difficult to meet the aesthetic requirements, and white conductive materials such as titanium dioxide, silica powder, aluminum powder, etc. due to the special production process of powder coatings, the conductivity of the coating is very poor, which limits the scope of application

[0004] Aluminum-doped zinc oxide and other metal oxide conductive powders have excellent electrical properties, environmental friendliness, low price, and light color. They can be used to prepare light-colored conductive coatings, but the addition of conductive fillers in the coating alone will make the conductive The agglomeration of the powder in the matrix is ​​intensified, and the stress transferred from the composite material to the inorganic particles through the interface is not enough to offset the decrease in the tensile strength caused by the reduction of the effective cross-sectional area of ​​the matrix, thus forming stress concentration and weak points, making the coating Uneven stress on the substrate leads to a decrease in its elongation at break, which affects the normal function of the coating