Product features
Traditional photocatalyst is a catalytic substance that influences surrounding matters through photocatalysis without any change in itself. Titanium dioxide is a typical photocatalyst.
Traditional photocatalysts are safe materials with excellent degradative performance and hydrophilicity but a rather short service life.
1. The Antibacterial and Antiviral Function of Porous Glass Photocatalyst
The oxidative decomposition effect of the porous glass photocatalyst reduces the bacteria that cause odor and dirt.
The oxidative decomposition of the porous glass photocatalyst can inactivate viruses such as influenza virus.
光触媒コーティング
2. The Antifouling Function of Porous Glass Photocatalyst
Contrasting to hydrophobicity, hydrophilicity means the affinity with water.
The porous glass photocatalyst absorbs ultraviolet and visible light to be super-hydrophilic, like rainwater sliding under the dirt, and wiping the dirt out.
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Those who are particular about the finish of their car, which is easy to use, resistant to scratches and dirt, and easily gives off luster and shine.
3. Film thickness of photocatalyst coating
Photocatalyst (titanium oxide) particles
has a size of 100 nm
Film thickness is 100~200 nm
About inorganic glass membrane
A Sol/Gel Academy's Record of Inorganic Glass Coatings
Thin films with thickness under about a few hundred nanometers are difficult to crack.
Because when the surface cracks, the surface area will increase accordingly, and the surface energy will also increase so that the stress will be relieved. However, the stress is not sufficient in the case of thin films.Although the surface area will increase after cracking, it will increase very little on the film, and the stress cannot be sufficiently relieved, so it can be considered that there is no stress on the film.It also affects the adhesion on the substrate; films with thicknesses above microns are prone to cracking.The gas or liquid surface will be created as the solvent evaporates.
To produce inorganic glass film, it is necessary to form a thin film of a few hundred nanometers or less, and the purity may reach 99.999%.
For reference, the purity for normal glass is 99.9%.
4.Porous Glass Photocatalyst Product Features
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dirt substance
汚れの原因物質は「親水面」 と「疎水面」を持ち親水面に付着して、疎水面を表面に残し、親水性能を失わせる。
光触媒は汚れ物質を分解し、親水性能を維持する。
Photocatalyst + glass layer (hydrophilic)
dirt substance
The substance that causes the fouling is organic substances, which have a hydrophilic surface and a hydrophobic surface.
The photocatalyst adheres to the hydrophilic surface to make the glass layer hydrophilic.
In this way, the glass layer decomposes pollutants and maintains the hydrophilic function.
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Glass layer → hydrophilic even in the dark
self-cleaning on rainy days
光触媒タイル
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dirt substance
汚れの原因物質は「親水面」と「疎水面」を持ち親水面に付着して、疎水面を表面に残し、親水性能を失わせる。
光触媒は汚れ物質を分解するが、親水ガラス層がない ため、分解した汚染有機物が堆積していく。
光があるときだけ親水性を発揮
雨の日にセルフクリーニング性能を発現しない
Difference from other companies' products
1. A Visualization Test of Porous Glass Photocatalyst
◆Soaked in 1% silver nitrate solution for ten minutes of UV irradiation
◆Oxidation color (the darker it is, the higher the titanium oxide activity)
Comparison of the active area of titanium oxide in 1% silver nitrate solution
Patent application 2006-042912
The operator used our company‘s silica adhesive to smear and film our company’s 90nm titanium and another company‘s 270nm titanium on the carrier glasses, and then immersed them in a special reagent, then irradiated them with UV. The purpose of this test is to observe the colors after the components in the reagent are oxidized, according to the active oxidant produced by the reaction of titanium oxide, so as to show the difference in the activity of titanium oxide.
After 10 minutes, the operator took out the carrier glasses from the reagent, placed them on a white substrate, and observed the colors by the Munsell color value.
1. Our company 90nm titanium → approximate CN30
2. Another company 270nm titanium → approximate CN80
3. Our silica adhesive → approximate CN95
2. A Virus Test of Porous Glass Photocatalyst
◆Test results of virus infection value in liquid after washing out the reagent
・Immediately after inoculation: in light and shade
・Common control: plastic petri dish
・1ml TCID value of the liquid after washing out
・The measured value of the semicircular UV intensity meter
・Stored at room temperature
◆Test results of virus infection value in liquid after washing out the reagent
・Immediately after inoculation: in light and shade
・Common control: plastic petri dish
・1ml TCID value of the liquid after washing out
・The measured value of the semicircular UV intensity meter
・The measured value of the semicircular UV intensity meter
・The measured value of the semicircular UV intensity meter
・Stored at room temperature
◆An Antibacterial Test of Porous Glass Photocatalys
Cultivation Test
Left: The result after smearing in the minimum culture dish and sprinkled with E.coli1*10^6/100μ1
Right: The same amount of E.coli was sprinkled into the same petri dish
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・An Antibacterial Test of Porous Glass Photocatalys
・Bacterial liquid preparation solution: 1/500NB medium
(diluted with phosphate buffer)
・Light irradiation conditions: about 1000- 2000 Lx
(one white FL20SS-W/18.20)
・Stored at room temperature (20-25°C)
We prepared a flat hand model produced by Reiken Equipment, then applies 500μ1*2 units of YK032S on the right half of the surface, and then incubate the surface of the palm at 37 degrees Celsius for 24 hours after drying.
3. Durability Test of Porous Glass Photocatalyst
・Test instrument: Contact angle meter produced by Emma Optical
・Test method: We put the sample into a low-temperature simulated sunlight xenon lamp device, took it out after 3000 hours, and measured the contact angle
◆測定結果
The durability test can prove that the deterioration of the coating film is small.
Painted
not Painting
Painted
not Painting