Weather-resistant anti-corrosion polyester powder coating containing glass fiber and clay minerals

Abstract

The invention relates to a preparation method of a weather-resistant anti-corrosion polyester powder coating containing glass fiber and clay minerals. Carboxyl-terminated polyester, GMA acrylic resin,unsaturated polyester resin and triglycidyl isocyanurate (TGIC) are simultaneously introduced into a powder coating cross-linking structure, and a micron-sized powder product is obtained after mixingand extruding by a screw and crushing by an air flow mill. The weather resistance, the corrosion resistance and the impact performance can be effectively improved under the condition that excellent other performances such as surface glossiness are ensured, and compared with polyester / TGIC type powder without glass fiber and clay of a common formula, the weather-resistant anti-corrosion polyesterpowder has better performance, low in cost and easy to operate and control.

Description

[0001] Technical field: [0002] The invention belongs to the field of high-molecular weather-resistant and anti-corrosion coatings, and specifically relates to a coating that can be adjusted by compounding components such as polyester, curing agent, and catalyst such as gloss, high weather resistance, corrosion resistance, and self-healing properties. Polyester powder coatings with various surface properties. [0003] Background technique: [0004] As the environmental unfriendliness of solvent-based coatings intensifies, as alternative competing products, more and more different types of powder coatings are gradually replacing solvent-based coatings due to the advantages of no VOC and easy recycling. The powder coating represented by polyester type is also occupying an increasingly important position in the fields of home furnishing and industry. [0005] However, the same as traditional solvent-based coatings, even powder coatings also face the hidden dangers of being easil...

AI Technical Summary

Problems solved by technology

[0005] However, the same as traditional solvent-based coatings, even powder coatings also face the hidden dangers of being easily damaged, corroded, and short-lived in some scenarios, which endangers the normal operation of inner materials and even key motor parts. run

Applications in different fields have put forward higher requirements on the weather resistance and corrosion resistance of powder coatings. More and more people are also trying to add fillers, improve powder structure, and use bio-based materials (such as bamboo, straw, Hemp, coconut fiber, etc.) to prepare composite polyester materials and other methods to enhance the functionality of the material, but these methods are more or less at the expense of the strength and impact properties of the material itself

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