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Excellent Nano Titanium Dioxide Application in Antibacterial and UV Blocking

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Update time : 2020-01-31 12:11:19
Amazing nanotechnology is everywhere, let's learn what is amazing about nano titanium dioxide application.

Nano titanium dioxide has not only strong antibacterial and deodorizing ability, but also strong ultraviolet shielding ability. Ultraviolet light will oxidize and discolor meat foods, and also destroy vitamins and other nutrients in foods, thereby reducing the nutritional value of food. If food is packaged with a transparent plastic material containing 0.1% - 0.5% ultrafine titanium dioxide, not only the food inside can be seen from the outside, but also the food will not be deteriorated for a long time, which is obviously better than the existing plastic film.

Before the 1970s, tanned skin was used as a standard for bodybuilding, but today people are gradually realizing that overexposure is the enemy of skin health care, so sunscreen products for the purpose of preventing UV damage have developed rapidly. Nano titanium dioxide stands out due to its non-toxic, non-irritating to the skin, good thermal stability and high temperature without decomposition. It is predicted that in cosmetics, Japan needs 1,000 tons of nano titanium dioxide every year as raw materials for sunscreens, makeup foundations and lipsticks.

 

When the ultra-fine titanium dioxide is mixed with an aluminum powder pigment or a mica pearlescent pigment in a ratio of 1: 1 or 2: 1, different flash colors can be observed from different directions. A yellowish bright spot appears in the illuminated area, while a gloss similar to blue appears in the side-light area, which can increase the color brightness of automotive metallic paint. Due to the unique optical properties of nano-titanium dioxide, it has become a popular pigment in the automotive industry and has become the most advanced pigment in the contemporary era. The car with nano titanium dioxide paint is extremely bright and very beautiful.

Gas sensors and humidity sensors are one of the most promising applications for nanoparticles. Titanium dioxide gas sensors have been successfully used in automotive exhaust sensors. In addition, there are nano-titanium dioxide humidity sensors made using resistance changes. These sensors can help people monitor the content of toxic substances in the gas and help protect the environment in a timely manner. Using the same nano-titanium dioxide humidity sensor can monitor the change in humidity, and can convert this change into an electrical signal, so as to achieve the purpose of automatically controlling air humidity very conveniently.

Polymer materials have excellent electrical insulation properties, so they are widely used in various fields of industrial and agricultural production and life. However, due to the high resistivity of general molecular materials, static electricity is easily generated when their products are subjected to friction and impact. Electrostatic focusing to a certain degree will cause discharge, even cause electrical breakdown or fire, and will cause strong interference to the radio receiver, making the radar unable to work properly. Therefore, preventing and eliminating static electricity is a very important thing.

 

If conductive polymer particles can be mixed into the polymer material, so that it has a certain ability to conduct current and dissipate electric charges, the accumulated charges caused by static electricity can be eliminated by grounding, thereby eliminating and preventing the harm caused by static electricity. Adding titanium dioxide can achieve this goal. Therefore, nano titanium dioxide is widely used in the electronics industry and aerospace industry, for electronic components, electrical appliances, aircraft, missiles, non-metallic parts of satellites, and printed circuits, electrostatic photocopying, conductive paper and other aspects.

Nano-titanium dioxide has two main crystalline forms: Anatase and Rutile. Rutile titanium dioxide is more stable and denser than anatase titanium dioxide, has higher hardness, density, dielectric constant, and refractive index, and its hiding power and coloring power are also higher. Anatase-type titanium dioxide has higher reflectance in the short-wavelength portion of visible light than rutile-type titanium dioxide, has a blue hue, and has a lower ability to absorb ultraviolet light than rutile-type titanium dioxide, and has higher photocatalytic activity than rutile-type titanium dioxide. Under certain conditions, anatase titanium dioxide can be converted into rutile titanium dioxide.

Nano titanium dioxide application in lithium battery: nano titanium dioxide has excellent high rate performance and cycle stability, fast charge and discharge performance and high capacity, good deintercalability of lithium and other characteristics, and has a good application prospect in the field of lithium batteries.