Formula of composite coating material

Abstract

The invention discloses a formula of a composite coating material. The formula of the composite coating material contains the ingredients by weight: 300g to 400g of polyester, 250g to 400g of epoxy, 2g to 6g of adjuvants, 0.5g to 2g of antioxidant, 2g to 5g of fuel gas resisting agent, 0.7g of 1.1g of ultramarine, 0.8g to 1.6g of ultramarine violet, 0.003g to 0.006g of violet red, 120g to 157g of barium sulfate, 100g to 130g of titanium white, 3g to 5g of high-gloss wax, 0.1g to 1g of incense, 1.0g to 1.5g of power-increasing agent and 0.003g to 0.005g of carbon black. A coating film surface with excellent properties, such as coating film permanence can be obtained through baking and has rub resistance, impact strength, adherence, toughness, corrosion resistance, resistance to chemicals, and the like; the coating material further has high weather resistance and pollution resistance; and a coating film with the thickness of 50 to 300 microns can be prepared from a powdery coating material through one-time spray-coating, the leveling property is good, and the problem of solvent coating materials that phenomena of dripping or stagnating and the like occur during thick coating is solved.

Description

technical field [0001] The invention relates to a formula of powder coating. Background technique [0002] Powder coating is a new type of solvent-free 100% solid powder coating. It has the characteristics of no solvent, no pollution, recyclable, environmental protection, saving energy and resources, reducing labor intensity and high mechanical strength of the coating film. [0003] At present, thermosetting powder coatings use thermosetting resin as a film-forming substance. After adding a curing agent for cross-linking reaction, it can form an insoluble and infusible hard coating after heating. No matter how high the temperature is, the coating will not be like thermoplastic coating As the layer is softened, it can only decompose. Since the resin used in thermosetting powder coatings is a prepolymer with a low degree of polymerization and a low molecular weight, the coating has better leveling and decorative properties. After the low molecular weight prepolymer is cured,...

AI Technical Summary

Problems solved by technology

[0003] At present, thermosetting powder coatings use thermosetting resins as film-forming substances. After adding a curing agent for cross-linking reaction, they can form a hard coating that is insoluble and infusible. No matter how high the temperature is, the coating will not be like thermoplastic coating As the layer is softened, it can only be decomposed. Since the resin used in thermosetting powder coatings is a prepolymer with a low degree of polymerization and a low molecular weight, the coating has better leveling properties and better decorative properties. After the low molecular weight prepolymer is cured, it can form a network crosslinked macromolecule, so the coating has good corrosion resistance and mechanical properties, so the development of thermosetting powder coatings is particularly rapid. However, in the prior art, its powder coatings Composed of polyester resin, blocked isophor copper diisocyanate, benzoin and dibutyltin dilaurate, its disadvantages are poor physical properties, poor covering effect, easy to produce fine bubbles, and cannot meet the requirements of electrical spraying and surface protection