JP2019188109A - Sole having photocatalyst added thereto - Google Patents

Abstract

To provide a sole having a photocatalyst added thereto for ski, snowboard or the like, to which a hydrophilic material having a function of the photocatalyst is added.SOLUTION: A sole is produced, to which titanium dioxide, zirconium dioxide and titanium nitride which are a photocatalyst and has a hydrophilic effect, respectively, are added. By adding titanium dioxide, zirconium dioxide and titanium nitride, a friction coefficient of the sole is lowered, and dry friction at a sliding time is changed into fluid friction by the hydrophilic effect, and further, dirt adhesion on the sole by the photocatalyst can be prevented. Consequently, a sliding performance of a ski board, a snowboard or the like can be improved, in the sole having the photocatalyst added thereto.

Description

  The present invention relates to soles such as skis and snowboards using titanium dioxide and fine powders such as zirconium dioxide and titanium nitride.

  Skis, snowboards, etc. are made for the purpose of sliding on the snow surface, but in order to slide more comfortably, the material of the sole (sliding surface) is made from conventional wood and is resistant to dirt and has good lubricity Technological innovation was made to change to polyethylene. However, there is a problem that sufficient sliding performance cannot be obtained only with a sole made of polyethylene. For this reason, metal soap, silicone, polytetrafluoroethylene (based on mineral oil such as paraffin and oil components such as beef tallow are used as the sole. A fluororesin powder having PTFE) as an example, a mixture of other substances having a lubricating performance, etc., is called ski wax, and the problem has been solved by applying these to the sole.

  In addition, there are some conventional soles to which graphite powder and copper powder are added for the purpose of improving the sliding performance. The inventor decided to add a photocatalyst to the sole itself. Good gliding performance is realized by adding a photocatalyst to the sole in advance. The photocatalyst is a material that has excellent hydrophilicity and antifouling properties.

Now, it is not yet fully clarified why skis slide on snow, but as a result of the inventor's research, the water on the snow surface helps the skiing and the water completely freezes. At low temperatures, it was found that slipping was extremely poor. Therefore, when a hydrophilic material was applied to the sole, the sliding performance was improved. This phenomenon was particularly remarkable in wet snow such as rainy weather.
Naturally, the fluid friction state where moisture enters between the sole and snow (ice) is in a dry friction state where the sole and snow (ice) are in direct contact with each other due to the loss of moisture. Because. In such a state, resistance due to friction increases and good sliding performance cannot be expected.

  In the conventional sliding theory, an attempt was made to obtain sliding performance by playing excess water adhering to the sliding using a water repellent material. However, skis and snowboards can slide on snow because of the moisture present between the snow and the sole as described above. Instead of making it water repellent, it is better to create a thin and wide water film on the sole using a hydrophilic material so that the sole and the snow do not touch each other as much as possible. This is because the friction caused by friction is smaller in the boundary friction and fluid friction where the snow does not directly touch the sole than in the dry friction between the sole and snow (ice). If a water film can be applied to the entire contact surface of the sole with the snow surface, the sole and the snow will not be in contact with each other, and a fluid friction state will occur. In order to achieve fluid friction with water, a hydrophilic material that blends well with water is more suitable than a water-repellent material.

  The problem to be solved is to change the dry friction into fluid friction or boundary friction by utilizing the water present on the snow surface using the hydrophilicity of titanium dioxide, zirconium dioxide and titanium nitride. Is to provide a sole. In recent years, snow has become dirty due to the influence of exhaust gas contained in the atmosphere, and a material having a high antifouling property is required for the sole, and the photocatalyst used in the present invention is optimal.

  By adding fine powders of titanium dioxide, zirconium dioxide and titanium nitride, which are known for their high hydrophilicity, to the sole made of polyethylene, the sole is covered with a water film by picking up moisture present on the snow surface. This reduces the coefficient of friction. Hydrophilicity can change dry friction into fluid friction and boundary friction, and friction due to sliding is greatly reduced. Moreover, since this invention uses a photocatalyst, it is excellent in antifouling property.

  The sole itself is generally formed by putting pelleted polyethylene into a cylinder or furnace, melting the polyethylene, and then molding. Whether casting or injection molding, a process for melting polyethylene is required. In this step, a sole having a function as a photocatalyst and high hydrophilicity can be obtained by mixing the titanium dioxide, titanium nitride, and zirconium dioxide of the present invention as additives. There is also a method of using polyethylene pellets mixed with the additive of the present invention in advance.

  An object of the present invention is to provide a sole having both strong hydrophilicity and antifouling property not found in conventional soles by adding a photocatalyst to a sole mainly composed of polyethylene. According to the present invention, it is possible to realize a sole having both good sliding performance due to hydrophilicity, which cannot be possessed by a conventional sole, and antifouling property, and the sliding performance of skis and snowboards is remarkably improved.

BEST MODE FOR CARRYING OUT THE INVENTION

  The present invention is a sole having both good slidability and antifouling property, and it is the best mode to use the present invention by sticking it to a core material such as skis and snowboards. The present invention is a kind of sole, and the work process such as pasting is based on a conventional sole.

  A polyethylene-added sole was prepared by adding 1% of polyethylene dioxide, zirconium dioxide, titanium nitride, and the like to polyethylene, and a comparative test was carried out. The ratio of the additives was 3 minutes each.

  As a result of the comparative test, the sliding speed of the sole of the present invention was higher than that of the conventional sole of polyethylene alone. In particular, it is conspicuous on a gentle slope, and the ski using the conventional sole is likely to stop on the gentle slope, whereas the ski using the present invention does not stop, The board slid to the lift platform at the end of the slope.

  Further, the test was conducted several times, and it was found that the higher the molecular weight of the polyethylene used in the present invention, the better the sliding property. The additive is suitably 1 percent to 2 percent, and if it is too much, the slipperiness is lowered.

  The present invention has very large industrial uses. This is because, in order to obtain good sliding performance, skis and snowboards that require wax can obtain good sliding performance without applying wax. As a result, consumers are freed from cumbersome waxing and can now comfortably defeat skis and snowboards.

Claims (1)

  Sole added with photocatalysts such as titanium dioxide, zirconium dioxide, titanium nitride used for skiing, snowboarding, etc., which does not contain additive compounds other than impurities that are inevitably mixed in from the manufacturing process such as raw materials and chemical synthesis and molding.