Polymer wax powder with self-repairing function, and preparation method thereof

Abstract

The invention relates to a polymer wax powder with a self-repairing function, and a preparation method thereof. The polymer wax powder is prepared from, by weight, 55-75 parts of polyethylene wax, 1-20 parts of allyl bisphenol A epoxy resin, 0.5-2 parts of hydroxyalkylamide, 0.5-5 parts of a silane coupling agent, 5-25 parts of carboxyl-terminated saturated polyester and 0.5-5 parts of an accelerant. The preparation method comprises the steps of ingredient mixing, melt extrusion, micronization, electron irradiation crosslinking and the like. The composite polymer wax micro-powder with the average particle size of 1-75 [mu]m can be prepared, and the wax micro-powder can be used as a polyester or epoxy polyester powder coating self-repairing functional additive to improve the surface hardness of a powder coating, enhance the stain resistance and make the coating material have the self-repairing function.

Description

technical field

[0001] The invention relates to the technical field of polymers, in particular to a polymer wax powder with self-repairing function and a preparation method thereof. Background technique

[0002] In recent years, low molecular weight polyethylene wax has been widely used in coatings, inks, leather, paper and other industries due to its excellent cold resistance, heat resistance, and abrasion resistance, endowing it with excellent friction resistance and stain resistance sex. In the past ten years, through partial introduction and independent research and development in China, breakthroughs have been made in the key technologies of special polyethylene wax materials, processes and equipment, and the quality has gradually reached the level of advanced foreign products.

[0003] Polyethylene wax powder can be added to the powder coating as a functional additive, which can improve the hydrophobicity and friction resistance of the coating surface, and the appeara...