Protective coatings and methods of making and using the same
A coating and water-based coating technology, applied in the direction of roofing using flexible materials, chemical instruments and methods, roofing using tile/slate tile, etc., can solve the problems of insufficient storage period, trouble, complex application process, etc. The effect of storage stability and easy application
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[0160] Instance
[0161] Unless otherwise specified, all parts, percentages, ratios, etc. in the examples and the rest of the specification are by weight. All contact angles reported in the examples are static contact angles reported in degrees. In addition, the following abbreviations and materials are used in the following examples:
[0162] material :
[0163] Base
[0164] TP1: Aluminum test panel with the following coatings: CORMAX 6EP e-coating, 708DM730 primer, 648DN027 black base coating and Du Pont RK8014 clear coating, obtained from ACT Laboratories (Hillsdale, MI);
[0165] TP2: Aluminum test panel with the following coatings: CORMAX 6EP e-coating, 708DM730 primer, 648DN027 white base coating and Du Pont RK8014 clear coating, obtained from ACT Laboratories (Hillsdale, MI);
[0166] TP3: Aluminum test board with the following coatings: PC8000e-coating, 615S primer, Du Pont IMRON 6000 LOOO6H white base coating and Du Pont 3440S clear coating, obtained from ACT Laboratories ...
Example Embodiment
[0287] Example 116
[0288] The coating composition is an aqueous dispersion, which is formed by the following steps: Combine NPS1 (4nm) and NPS5 (20nm) silica nanoparticle dispersions at a weight ratio of 70 to 30 and a solid content of 10% by weight , And then acidified with HCl. The anti-contamination effect of the dried nano-silica-containing coating composition on the substrate after being subjected to the anti-contamination test is determined by Figure 3A (The uncoated control half) and Figure 3D (The coated half) is shown in the photo.
Example Embodiment
[0289] Example 117
[0290] This example was prepared and tested according to the same procedure as described for example number 116, except that the nano-silica-containing coating composition used in this example was an aqueous dispersion with a core-shell structure. The following steps are used to form: NPS5 (20nm) silica nanoparticle dispersion (shell) and (40nm) polyurethane dispersion (Neoree R960, available from DSM Corp.) (core) in a weight ratio of 70 / 30 (shell / Core) and 10% by weight solids content were combined and then acidified with HCl. The anti-contamination effect of the dried nano-silica-containing coating composition on the substrate after being subjected to the anti-contamination test is determined by Figure 3B (The uncoated control half) and Figure 3E (The coated half) is shown in the photo.
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