Water based thermosetting ether FEVE fluorocarbon coating products

1. Product Introduction and Technical Description
        The common thermosetting FEVE fluorocarbon coatings refer to single component coating products made by using hydroxyl containing trifluorochloroethylene alkyl vinyl ether or alkyl vinyl ester copolymer resin and amino resin or closed isocyanate curing agent, which can be baked into a film at high temperature. Depending on the type of FEVE resin selected in the coating, thermosetting FEVE fluorocarbon coatings can be divided into two categories: thermosetting ether FEVE fluorocarbon coatings and thermosetting ester fluorocarbon coatings. Due to the strong electronegativity of fluorine element, the fluorine carbon (F-C) chemical bond formed is shorter in length, higher in bond energy, more stable in chemical structure, and less susceptible to damage compared to conventional coatings such as carbon carbon (C-C) and carbon oxygen (C-O) bonds. Therefore, like hot-melt PVDF fluorocarbon coatings, thermosetting FEVE fluorocarbon coatings not only have strong wear resistance, chemical resistance, and impact resistance, but also have high resistance to fading and ultraviolet radiation in extremely harsh and harsh environments. The weather resistance levels of three high-temperature fluorocarbon coatings are shown in the figure.

        From the above weather resistance curve graph, it can be seen that the thermosetting ether FEVE fluorocarbon coating has weather resistance comparable to PVDF fluorocarbon coating, and is far superior to ester FEVE fluorocarbon coating. This is mainly due to the relatively high fluorine content of ether FEVE and the strict alternating arrangement of fluoroalkenes and alkyl vinyl ethers, which makes the molecular structure of fluororesin more compact and orderly. The shielding effect of fluorine atoms on the molecular chain of the resin structure is more stable and long-lasting, which is the same as the reason why PVDF resin exhibits high weather resistance. Therefore, thermosetting ether FEVE coatings are more suitable than ester FEVE coatings for outdoor applications such as aluminum veneers, aluminum curtain walls, and aluminum profiles that require ultra-high weather resistance for coatings.

        In the technical research and development route of our products, our company uses high hydroxyl content water-based ether FEVE resin combined with amino resin or water-based blocked isocyanate as the main film-forming substance of the paint film. In the paint making process, water can be directly used as the dispersion medium for resins instead of traditional organic solvents such as esters, benzene, and ethers. At the same time, high weather resistant inorganic pigments and water-based functional additives can be introduced to obtain truly water-based fluorocarbon coating products. The paint film formed by high-temperature curing has application performance comparable to solvent based PVDF coatings, while avoiding the use of toxic and harmful solvents, greatly reducing VOCs emissions during production and construction processes. At present, through this technological route, our company has successfully achieved product production and customer online application. The technology of this product has obtained a national invention patent certificate.

II. Product System Classification and Application Instructions

III. Product Parameters

IV. Product Construction Technology and Instructions

Construction precautions:
1. The above construction process is“ Two coats and one baking; Process: In the dry film state, the thickness of the primer film is controlled at 8-10um, the thickness of the topcoat film is 20-30um, and the total film thickness is 30-40um.
2. Before using the original paint, please disperse it evenly, and manual gun spraying or electrostatic spraying can be used. Deionized water or purified water can be directly used to dilute the coating and disperse it evenly before construction. If electrostatic spraying is used, the recommended viscosity range is 18-25s/coating 2 # cup. In wet and cold weather, it may be necessary to moderately increase the construction viscosity.
During the actual production process, for paint film surfaces that have not experienced abnormal conditions such as blistering or cracking, it is possible to achieve non polishing, rework, and repainting, or to perform secondary spraying from bottom to surface after polishing.

Fifth, Product Performance and Execution Standards
Based on the FTW200 series products, the performance testing standards for "Hot Melt Fluororesin (PVDF) Coatings" are used for testing:

6、 Product Performance Testing Report Display
1. Performance Testing Report
Performance Testing Report for Waterborne Fluorocarbon Coating Spray Aluminum Plate. pdf
Performance Testing Report for Waterborne Fluorocarbon Coating (4000 hour Performance Testing Report). pdf

2. VOC Testing Report
Water based thermosetting ether FEVE fluorocarbon coating primer (VOC heavy metal) testing report. pdf
Water based thermosetting ether FEVE fluorocarbon coating topcoat (VOC heavy metal) testing report. pdf