[Scientific and Technological Achievements Promotion] Anti-fog Glasses Wipe

After seeing the title of this issue of "Science and Technology Promotion", I believe many of my friends are curious about this new product that is urgently needed in winter, right?Anti-fog glasses wipes developed by the team of the Institute of Table Interface Micro-nano Technology in our hospital.

TA can be used in what occasions?
What is the principle of TA?
Let the little editor take you to find out!

science and technology research and development

With the prevention and control of the epidemic, wearing masks has become a norm in people's daily life, and wearing masks in public places has become a requirement. If you are a person wearing glasses, in winter, you must have experienced the trouble of wearing a mask to go out with fog on the lens. There is also a hot pot dinner with friends, a table full of food, is it because the fog on the lens obstructs your vision, affecting your "fighting" ability? Indeed, winter lens fog really affects our lives, and even makes you encounter danger in life, bringing economic losses.
This is not, Chongqing Morning News reported such an accident:Ms. Li, who was wearing glasses, was wearing a mask in an incorrect way, which caused the glasses to fog when breathing, and the eyes were blurred for an instant, and the road ahead could not be seen clearly.,She had to stop and get ready to wipe the glasses. However, in her panic, she mistakenly stepped on the accelerator as the brake. The vehicle refueled and rushed straight into the isolation barrier in the middle of the road, causing an accident in an instant, causing her to lose more than 60000 yuan.

glasses fog is how to form?
In winter, the temperature difference between indoor and outdoor is relatively large, and the gaseous water in the indoor air condenses into small water droplets when it touches the cold lens. This is actually a very common physical phenomenon. When people enter the warm room from the cold outside, or When the cold lens encounters hot gas, very small water droplets will appear on the lens.

Our exhalation carries a large amount of water, and the exhalation temperature can reach 36C ° to 37°C. When the "high temperature" and sufficient water gas encounters a lens with a lower temperature, the glasses will fog. The professional term for this phenomenon is called "atomization".

 

science and technology innovation

How to solve and prevent the "atomization" phenomenon of the lens?
Utilization of Table Interface Micro-nano Technology Research Institute in Our Hospitalsuper hydrophilic technologyThe anti-fog glasses cloth developed can successfully solve this problem.

　super hydrophilic technology:
The surface of the object is modified by using molecular groups or particle materials with hydrophilic properties to change the wetting characteristics of the surface of the object to liquids such as water, so that the surface of the object does not produce water droplets that is not atomized.

anti fog cloth principle:

Superhydrophilic molecules are loaded onto fabric fibers by self-assembly technology to make anti-fog wipes.

Use anti-fog glasses cloth to wipe the glasses and transfer the nano-coating to the lens surface to form a super-hydrophilic anti-fog layer.

When the lens meets water vapor, it will not condense into small droplets, but completely spread out to form a transparent water film to achieve the anti-fog effect.
　　

A high-efficiency anti-fogging agent-super-hydrophilic material is loaded on the fiber fabric. With each use of wiping, the superhydrophilic material can be transferred to the surface of the object,A completely transparent super-hydrophilic protective layer is formed. With this super-hydrophilic protective layer,The small water droplets will spread out and disappear quickly and evenly on the mirror surface, and will not condense into droplets, thereby playing an anti-fog effect.

　　Using other types of methods, such as soapy water and detergent, can also reduce the generation of fog on the surface of the lens?
is also possible,But the most important thing is that this method is relatively short-term.
Due to chemical effects, it may also corrode the film on the surface of the lens. The film layer of the lens accounts for almost 1/3-1/2 of the cost of the lens. It is a very thin high-tech coating. After corrosion, the light transmission effect of the lens Decreased and more easily worn. After corrosion, the protective effect of the lens surface will decrease, and the power of the lens will also change due to the change of refractive properties after the material changes, which greatly shortens the service life of the lens.

Anti fog glasses cloth product advantages:
1. Fast and long-lasting
Anti-fog glasses cloth can quickly take effect, after wiping, can immediately ensure that the mirror does not fog. No need to wait, direct effect, can ensure a clear and bright day.
2-Security
The composition of the anti-fogging agent does not contain any organic volatile substances and will not release unhealthy substances during storage and use.

3, does not hurt the lens
The anti-fog glasses wipe is made of high-grade professional fiber woven cloth, which feels soft and comfortable, very dry, and will not cause any scratches on the glasses for a long time. The super-hydrophilic material also does not have any effect on the lens.
4, no smell, easy to carry
High-efficiency antifogging agent tasteless, just after a special process of anti-fog glasses wipe, no smell, can be used at ease; storage pouch easy to use, in use only need to take out the glasses cloth to regular wipe the glasses can be.

application value

　　Suitable for the vast majority of the need for anti-fog occasions：
Window glass, rearview mirror-no need to wipe repeatedly, just wipe it with anti-fog glasses cloth, you can effectively avoid glass fogging and ensure driving safety;
Outdoor photography-prevent fogging of SLR and camera lenses from affecting shooting quality. One wipe can prevent fogging for a long time.

Applications: glasses, swimming goggles, car rearview mirrors, ski goggles, photographic lenses, mobile phone screens, helmets

table interface micro nano technology research institute:
In the micro-nano technology research institute, there are not only the Yangtze River scholars and the Ministry of Education's new century talents and other leading talents in scientific and technological innovation, but also doctors and high-end talents from well-known universities at home and abroad. The team relies on the accumulation of scientific research achievements in the Department of Mechanics and the State Key Laboratory of Tribology of Tsinghua University for decades, with the policy support of Tianjin and the technical support of Tsinghua University, realize the industrial transformation and application of technologies such as self-assembly filter coating, self-assembly coating oil-water separation, super-hydrophobic and super-hydrophilic surface preparation, and carry out the transformation of related achievements of self-assembly technology, scientific research industrialization, technical support and product services, and establish the operation mode of related products corporatization.

Technical docking, business negotiation:
Contact: Liu Mingyi
Fixed telephone: 022-84999163
Mobile Phone: 18322397456
E-mail: liumy@tsinghua-tj.org

Source | Table Interface Micro-nano Technology Institute
Editor | Wang Xiao
The final interpretation right of the above related technologies belongs to the Institute of Micro-nano Technology of Table Interface.