High-weather-resistance aluminum alloy wood grain profile and preparation method thereof

Abstract

The invention discloses a high-weather-resistance aluminum alloy wood grain profile and a preparation method thereof. A bottom powder layer, a heat transfer printing wood grain layer and a protective coating are sequentially arranged on the surface of the high-weather-resistance aluminum alloy wood grain profile. The bottom powder layer is made of a polyester powder coating; the protective coating is prepared from a protective coating, and the protective coating comprises a normal-temperature curing type FEVE fluorocarbon coating; the normal-temperature curing type FEVE fluorocarbon coating comprises fluorocarbon resin, an organic solvent, a curing agent and an auxiliary agent, wherein the fluorocarbon resin is an ethylene-trifluorochlor oethylene copolymer and / or an ethylene-tetrafluoroethylene copolymer; the curing agent is one or a combination of aliphatic polyisocyanate, aromatic polyisocyanate, alicyclic polyisocyanate and aromatic aliphatic polyisocyanate. The high-weather-resistance aluminum alloy wood grain profile is suitable for outdoor use, has clear and natural texture patterns and vivid wood texture, and has a very strong decorative effect.

Description

technical field [0001] The invention relates to the field of aluminum alloy surface treatment, in particular to a high weather-resistant aluminum alloy wood grain profile and a preparation method thereof. Background technique [0002] Aluminum alloy wood grain profile products have become more and more popular in the field of construction and home improvement due to their advantages of good environmental protection, realistic wood grain appearance, and diverse designs, becoming one of the new growth points of the aluminum profile industry. At present, thermal transfer wood grain profiles are widely used indoors. The processing method of this product is spraying and then thermal transfer. The mechanism is to use the sublimation and transfer of dyes on the transfer wood grain film to form a wood grain pattern. The specific process is to spray a base color powder coating film on the surface of the aluminum profile, then wrap the aluminum profile with the transfer wood grain fil...

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Problems solved by technology

[0003] However, in the prior art, the surface weather resistance of thermal transfer products is poor, and the wood grain texture of the product is formed by the sublimation transfer of dyes. It is easy to fade and age after being exposed to the sun during use

When wood grain transfer printing products are used outdoors, their weather resistance is affected by humidity, temperature and sunlight intensity. If the weather resistance is not good, it will cause fading and loss of gloss, cracking, chalking, loss of mechanical strength and physical degradation, resulting in Wood grain transfer products are not suitable for outdoor use

However, the three-dimensional wood grain products obtained by spraying have a single variety and complicated manufacturing process, which cannot meet various market demands.

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