Views: 120 Author: Site Editor Publish Time: 2022-11-21 Origin: Site
Appropriate ultraviolet rays are beneficial to human health, can promote vitamin D synthesis, reduce the occurrence of sterilization, and have a certain disinfection and sterilization effect. However, this "appropriate" amount is really difficult to control, and accidentally was sunburned.
Let's give you a small knowledge about ultraviolet rays:
UVA: The energy is small, which can transmit it under the leather tissue, causing the skin to turn black, dry and relax, wrinkles, and accelerate aging.
UVB: Large energy and can pass through the epidermis, causing sunburn, skin tumors and immunity.
UVC: The most energy and the strongest effect, causing sunburn, gene mutations and tumors, but before reaching the ground, it was almost completely absorbed by the ozone layer.
After understanding some ultraviolet knowledge, it is more necessary to protect it. In fact, in daily life, everyone has certain protection measures, such as sunscreen, sunglasses and parasols. But if clothes can directly block ultraviolet rays, it will play an important protective role.
Once the clothing fabric of UV prevention is pushed to the market, it is favored by many beautiful women.
How to achieve ultraviolet function?
Through rate+reflectivity+absorption rate = 100%. The reflection and absorption rate increased, the transmission rate was reduced, and the protectionability of ultraviolet rays was good.
Types of anti -ultraviolet tidal agent
Inorganic anti -UV tidal agent
Most of the commonly used anti -ultraviolet tidal agents are metal, metal oxides and its salt, also known as ultraviolet shielding agent. Such as TI02, ZNO, AL2O3, Kaolin, talc powder, charcoal black, iron oxide, leader -oxide and CACO3.
Mechanism: Use certain inorganic substances to have good refraction, reflection, and scattering performance to protect ultraviolet rays.
Features: non -toxic, tasteless, hot stability, no decomposition, no volatile, efficient and safe.
Organic anti -UV tidal agent
There are mainly phenyltosterochemoids, phenyl -pyramole, organic nickel polymers, salicylic acid compounds, and triazine P132, replacing acrylics.
Mechanism: It is mainly to absorb ultraviolet rays and perform energy conversion, and turn ultraviolet rays into low -energy heat or wavelength electromagnetic waves, thereby achieving the purpose of anti -ultraviolet radiation.
Features: The optical absorption and conversion mechanism of ultraviolet absorbers vary from the type. From the perspective of molecular structure, it generally has a common rail structure and hydrogen bond. After absorbing ultraviolet rays, it can be converted into heat or fluorescence.