Nylon lens material: The main material selected for the nylon lens is TROGAMIDCX,a special transparent polyamide,which is a kind of ultra-micro anti-ultraviolet transparent crystal material. Its crystal is very small and does not scatter visible light. Because it uses the method of introducing side groups into the molecular chain to destroy the regularity of the molecule and inhibit the formation of crystals, thereby obtaining a transparent polyamide. Many brand sports sunglasses and brand sunglasses are made of nylon. The most notable feature is its excellent performance against of crack resistance and chemical resistance. The processing performance of the lens also superior to the PC lens. Although the surface has been hardened, the scratch resistance of the surface is slightly worse than that of CR39 and comparable to that of PC lens. The price of several times that of PC and CR39 is also the main obstacle to mass popularization.
Features of nylon lens:
(1)Light: about one-tenth the weight of the same volume of glass,and half the weight of traditional resin lenses.
(2) Durable: It has the physical properties of impact resistance and deformation resistance. Under strong impact, it will not crack or break, and it is used for safety lenses.
(3) Environmental protection: Thermosetting materials are recyclable because they can be recycled and processed into other industrial products.
(4) Not resistant to scratches: The surface of the lens needs to be hardened, that is, with a scratch-resistant protective film, so that it can be used for better aging.
(5) High processing cost: The processing performance of the lens is relatively poor, and professional processing equipment and technical personnel are required.
Uses of nylon lenses: Nylon lenses are often used in sports brand sunglasses and high-quality sunglasses. They have high elasticity, excellent optical quality, and strong impact resistance. When nylon lenses were invented, they were used as eye protection lenses with professional protection functions. However, nylon lenses have poor wear resistance and high production costs. This type of sunglasses is more suitable for people with sports or professional protective glasses. Due to its special physical properties, this lens material was originally invented as a material for spacesuit masks, military and police explosion-proof, and precision instruments.
