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Silicon dioxide coating for improving hydrophilicity/transmittivity

A silica and coating technology, applied in coatings, applications, household appliances, etc., can solve the problem that the interaction between ions and silica surfaces cannot be fully understood, and achieve good adhesion, less harm, and better durability. Effect

Inactive Publication Date: 2009-11-18
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, despite intensive research, the interaction of ions with the surface of silica is not fully understood (see Iler, "The Chemistry of Silica," John Wiley, 1979 p.656)

Method used

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  • Silicon dioxide coating for improving hydrophilicity/transmittivity
  • Silicon dioxide coating for improving hydrophilicity/transmittivity
  • Silicon dioxide coating for improving hydrophilicity/transmittivity

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0056] Material

[0057] Silica Nanoparticle Dispersion is Nalco 1115 TM (4nm), 2326 TM (5nm), 1030 TM (13nm), 1050 TM (20nm), 2327 TM (20nm), 45nm and 93nm from Nalco Company, Naperville, IL.

[0058] Tetraethoxysilane (TEOS, 99.9%) was obtained from Alfa Aesar, Ward Hill, MA.

[0059] Polyethylene terephthalate (PET) film was obtained from E. I. DuPont de Nemours, Wilmington, DE, under the trade designation "Melinex 618", having a thickness of 5.0 mils and a primed surface.

[0060] Polycarbonate (PC) films were obtained from GE Advanced Materials Specialty Film and Sheet, Pittsfield, MA under the trade names LEXAN 8010 (0.381-mm), 8010SHC (1.0-mm), and QQ92.

[0061] Bynel-3101 TM is a polyethylene copolymer available from E.I. DuPont de Nemours & Co., Wilmington, Del.

[0062] Pellathene 2363 TMis a polyether based polyurethane available from Dow Chemical, Midland, MI.

[0063] Polyvinyl chloride (PVC) film is 3M(TM) Scotchcal TM Luster Overlaminate 8519, 1.2...

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Abstract

The invention provides a coated product which is provided with a basal body coated with a silicon dioxide coating nano-particle layer. The thickness of the coating layer is uniform virtually, perpetually adhered on the basal body and provides the surface nature of dereflection and / or hydrophile for the basal body.

Description

technical field [0001] The present invention relates to silica nanoparticle coatings, articles having nanoparticle silica coatings thereon, such as optical devices or graphic media, and methods for making such articles. Background technique [0002] A variety of applications require articles having a surface capable of spreading water and thus preventing the formation of water droplets on the surface of the article. For example, transparent plastics used in foggy or humid environments, such as greenhouse windows, should avoid the formation of water droplets that reflect light, which reduces light transmission. A water-spreading surface on these materials helps maintain their clarity and minimizes unwanted streak formation. [0003] Water spreading properties are also required for traffic signs using reflective film. Reflective film has the ability to return a large amount of incident light to the light source. Clinging raindrops and / or dew can impair light transmission in...

Claims

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Application Information

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IPC IPC(8): B05D7/24C09D1/00C09D7/61
CPCC08K3/36C04B2111/00112C03C17/007C04B41/009C04B41/5089C03C2217/75C09D1/00C09D7/1216C09D7/1266C03C2217/425C04B41/85C09D7/61C09D7/67Y10T428/259C04B41/4922C04B41/5016C04B33/00
Inventor 景乃勇罗克珊·A·伯默尔陈雪花喻志刚张莹解荡奚邦为
Owner 3M INNOVATIVE PROPERTIES CO
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