FG-coated MOF composite material, coating containing composite material, and preparation methods and application of coating
A technology of composite materials and composite coatings, applied in the direction of anti-corrosion coatings, epoxy resin coatings, coatings, etc., to achieve the effect of improving the protective performance
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[0026]Example 1
[0027]Preparation of FG @ ziF-8 modified epoxy resin composite coatings, including the following steps:
[0028](1) Preparation of FG @ ziF-8 composite: 0.117 g of Fg is dispersed in anhydrous methanol, and the ultrasound is oscillated 2 to 3 hours, then 0.5 g of Zn (NO)3)2· 6h2O and 0.55 g 2-methylimidazole were added to the FG methanol dispersion, stirred for 2 h. The suspension was stirred, and the centroid was separated and alternately washed with methanol and deionized water, and finally was dried at 60 ° C for 12 h. Sitted FG @ MOF composites, the molar ratio of zinc ions and 2-methylimidazole in this example is 1: 4, and the mass fraction of all participating in the reaction raw material is 10%;
[0029](2) Preparation of composite coatings: mixed mass ratio of 10: 0.5: 8, mixed with fg @ ziF-8 and diluent, wherein the diluent is a mixture of xylene and n-butanol, and xylene and n-butanol The mass ratio is 2: 1; the ball mill is stirred for 0.5 h, then 40 g of a poly...
Example
[0031]Implementation ratio 1
[0032]According to the step (2) of Example 1, the mass ratio of 10: 0.5: 8 is mixed, wherein the diluent is a mixture of xylene and n-butanol, and xylene and n-butanol The mass ratio is 2: 1; the ball mill is stirred for 0.5 h, then 40 g of a polyamide 650 curing agent is added to each 100 g of epoxy resin E-44, stirred for 10 min, vacuum, mixed, mixed with epoxy coating, then epoxy The resin coating is applied to the surface of the preprocessant carbon steel substrate, the coating thickness is 70 ± 10 μm, then dried, the curing temperature is 40 ° C, cured for 5 h, and the surface of the carbon steel is obtained. Epoxy coating.
[0033]1, composite macro-morphological test
[0034]Example 1 and the FG @ ZIF-8 and FG used to implement the Comparative Example 1 were observed under the scanning electron microscope, and the morphology results were obtained.Figure 1-2As shown, the macroscopolamology and element analysis of FG @ ziF-8 in Example 1 can be seen that i...
Example Embodiment
[0039]Example 2
[0040]Preparation of FG @ ZIF-7 modified epoxy resin composite coatings, including steps:
[0041](1) Preparation of FG @ zif-7 composite: 0.233 g of Fg is dispersed in anhydrous methanol, and the ultrasound is oscillated 2 to 3 hours, then 0.5 g of ZnCl2And 0.433 g of benzimidazole was added to the Fg methanol dispersion, stirred for 2 h. The suspension was stirred, and the centroid was separated and alternately washed 4 times with methanol and deionized water, and finally was dried at 60 ° C for 12 h, that is, the powder-shaped FG @MOF composites, the molar ratio of zinc ions and phenylazole in this example is 1: 1, and the mass fraction of all participating in the reaction raw material is 20%;
[0042](2) Preparation of composite coatings: mixed with epoxy resin, FG @ ZiF-7 and diluent of 10: 2: 10, wherein the diluent is a mixture of xylene and n-butanol, and xylene and n-butanol The mass ratio is 3: 1; the ball mill is stirred for 0.5 h, then the 30 g of the polyamide ...
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