阅读说明：本技术 光学透明超疏水薄膜 (Optically transparent super-hydrophobic film ) 是由 J.T.辛普森 于 2019-02-27 设计创作，主要内容包括：公开了一种易于施涂、透明、粘合良好且超疏水的涂层。一方面,一种用于涂覆基底的方法包括提供具有表面的基底,邻近该表面布置涂料组合物,该组合物包括疏水氟化溶剂、包括疏水氟化聚合物的粘合剂、以及疏水热解法二氧化硅纳米粒子。还公开了一种包括涂料层的制品,该涂料层包括部分暴露在其外表面上的多个纳米粒子。(An easy-to-apply, transparent, well-adhering and superhydrophobic coating is disclosed. In one aspect, a method for coating a substrate includes providing a substrate having a surface, disposing a coating composition adjacent the surface, the composition including a hydrophobic fluorinated solvent, a binder including a hydrophobic fluorinated polymer, and hydrophobic fumed silica nanoparticles. Also disclosed is an article comprising a coating layer comprising a plurality of nanoparticles partially exposed on an outer surface thereof.)

1. A method of coating a substrate, the method comprising:

providing a substrate having a surface;

disposing a coating composition adjacent to the surface; the composition comprises:

a hydrophobic fluorinated solvent;

a binder comprising a hydrophobic fluorinated polymer; and

hydrophobic fumed silica nanoparticles; and

evaporating the fluorinated solvent.

2. The method of claim 1, wherein the coating composition further comprises hydrophobic aerogel nanoparticles.

3. The method of claim 2, wherein

The binder is present in an amount in the range of 0.3 to 1.5 weight percent of the composition;

the silica nanoparticles are present in an amount of 0.01 wt% to 0.5 wt% of the composition; and

the aerogel nanoparticles are present in an amount of 0.1 wt% to 0.5 wt% of the composition.

4. The method of claim 2, wherein the silica nanoparticles and the aerogel nanoparticles have an average size in the range of 10nm to 200 nm.

5. The method of claim 1, wherein the coating composition further comprises a crosslinking silane.

6. The method of claim 5, further comprising curing the disposed coating composition.

7. The method of claim 1, further comprising treating the substrate surface prior to disposing the coating composition.

8. The method of claim 7, wherein treating the surface comprises plasma etching.

9. The method of claim 7, wherein treating the surface comprises depositing silane on at least a portion of the surface.

10. A coated substrate which is the product of claim 1.

11. An article comprising a coating layer having an inner surface and an opposing outer surface, the inner surface disposed adjacent to a substrate surface, wherein the coating layer comprises a hydrophobic fluorinated polymer and a plurality of nanoparticles, and at least a portion of the nanoparticles are exposed on the outer surface of the coating layer.

12. The article of claim 11, wherein the nanoparticles are selected from one or more of silica nanoparticles and aerogel nanoparticles.

13. The article of claim 11, wherein the nanoparticles have an average size in the range of 10nm to 200 nm.

14. The article of claim 11, wherein the outer major surface further comprises a plurality of depressions.

15. The article of claim 14, wherein the average size of the depressions is in the range of 10nm to 200 nm.

16. The article of claim 11, wherein the coating layer further comprises a crosslinked silane.

17. The article of claim 11, wherein the substrate surface comprises a plurality of hydroxyl groups.

18. The article of claim 11, wherein the substrate surface comprises silane.

19. The article of claim 11, wherein the outer major surface has a water contact angle of at least 130 °.

20. The article of claim 9, wherein the outer major surface has a water contact angle of at least 150 °.