A kind of outdoor super-weather resistant powder coating and preparation method thereof

Abstract

The invention relates to the technical field of paint production, in particular to an outdoor super weather-resistant powder paint and a preparation method thereof. The raw materials of the powder coating are: epoxy resin, fluorosilicone resin, polyhexamethylene adipamide, dibenzoyl peroxide, nano-alumina, activated calcium borate, polyvinyl alcohol yttrium oxide polymer, nano-boron nitride , Modified attapulgite. The coating of the invention has high structural strength and good stability after being sprayed. Good resistance to acid, alkali and fog, anti-aging, suitable for outdoor facilities.

Description

technical field [0001] The invention relates to the technical field of paint production, in particular to an outdoor super weather-resistant powder paint and a preparation method thereof. Background technique [0002] Due to the lack of shelter, the outdoor environment is directly exposed to rain, sunlight, and many animals, plants, and microorganisms, especially sports equipment, outdoor building curtain walls, outdoor site guardrails and other outdoor items that are frequently used, because There are more human factors, such as sticking to human sweat, glowing and heating, which are more likely to attract insects and animals, and are easily affected by the outside world to cause scratches and insect bites, which in turn cause scratches on the surface of the coating film, which not only affects the appearance of the appearance parts , and it is easy to cause damage to the coating, which in turn affects the performance of the appearance parts. Its damage probability far exc...

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Problems solved by technology

[0003] In this regard, research in the prior art is also relatively popular, such as a high-hardness powder coating with the patent number CN201710969885.X, which uses polyurethane resin, polyester resin, isocyanate dimer, additives, pigments, fillers Prepared, the coating has excellent hardness performance on the substrate, the high hardness powder coating has the best adhesion to the substrate, and has a good scratch resistance effect; but it lacks the design for biological damage, such as insect bite belt acid corrosion and enzymatic corrosion; another example is a composite modified fluorocarbon polyester powder coating and its preparation method with the patent number CN201710424742. source, to prepare composite nano-powder filler, and then stir it with styrene, sodium dodecylsulfonate and other substances to form a mixed emulsion, add potassium persulfate for heat preservation reaction to graft styrene, and then pass through tridecafluorooctyltriethoxy The inert low surface energy treatment of active silanol produced by silane in chloroform makes the composite nano powder filler have extremely low surface energy, and then grinds with polyester resin, fluorocarbon resin, etc. to obtain a mixed material, and finally melts, mixes and extrudes The composite modified fluorocarbon polyester powder coating is obtained through extrusion, tableting, crushing, fine crushing, separation, and impurity removal. The coating has good leveling properties and can effectively improve the aging resistance of the coating; however, it lacks strengthening The design of the mechanical structure is unavoidable for mechanical damage to the facility during frequent use

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