Layered article

Abstract

There is provide a layered article with good snow sliding property and antifouling property, article having a substrate and a particle layer laminated on the substrate, wherein the particle layer is a layer formed by applying a particle dispersion liquid to the substrate, the particle dispersion liquid comprising first silicon oxide particles composed of branched rod-shaped particles, each of the branched rod-shaped particles having a diameter of 3 to 50 nm and the branched rod-shaped particles having an average particle diameter of 30 to 500 nm, second silicon oxide particles having an average particle diameter of 1 to 20 nm, third silicon oxide particles having an average particle diameter of greater than 20 mn, and a dispersion medium, wherein the content of the first silicon oxide particles is 15 to 50% by weight, the content of the second silicon oxide particles is 15 to 50% by weight, and the content of the third silicon oxide particles is 35 to 70% by weight where the total amount of the first, second and third silicon oxide particles is 100% by weight, and then removing the dispersion medium from the applied particle dispersion liquid.

Description

technical field [0001] The present invention relates to layered articles excellent in snow sliding properties and antifouling properties. Background technique [0002] Materials used in houses, warehouses, buildings, means of transportation, road / railway related facilities, agricultural facilities, solar panels, overhead power transmission facilities, etc. need to be hardly polluted even if they are used outdoors for a long time. In addition, when such materials are used in snowy regions, problems such as collapse, breakage, and deformation caused by snow loads arise, so it is required that snow hardly accumulates on the materials, in other words, the materials need to have skiability. [0003] Various techniques have been devised for imparting stain resistance or skiability to materials. For example, JP2003-155348 A discloses a method of preventing snow and ice adhesion by using polysiloxane having a perfluoroalkyl group or a composition thereof. [0004] JP 2006-111680 A...

AI Technical Summary

Problems solved by technology

[0006] Although the method disclosed in JP 2003-155348 A is a technology to realize skiing by imparting water repellency, initial water repellency is gradually lost due to contamination over time, so it is difficult to continuously obtain skiability and antifouling properties for a long time

Regarding the method using photocatalytic fine particles hydrophilized by ultraviolet rays as disclosed in JP 2006-111680 A, and the method using an infrared absorber as disclosed in JP 2006-9452 A, since the amount of ultraviolet rays or infrared rays will vary depending on As the snowfall increases, there is a problem that the inherent function cannot be exhibited, so the skiability and anti-fouling properties will become insufficient

Therefore, the conventional technology is insufficient in terms of skiability and antifouling properties

Images