PC resin lens and lens which is better? Tiffany and Co Necklace Jewelry Outlet Store Glasses when we encounter salespeople always asked the question, "What kind of material do you want to select the lens; our side resin lens and PC lens sell better" glasses when we are not encounter to this question then, what is the resin lenses, what is the PC lenses do, they are any different, LOHO glasses senior living optometrist to introduce you to a resin lens and PC lens which is good.
Resin lens:
Resins are derived from a variety of plants, particularly conifers hydrocarbons (hydrocarbons) class secretions. Because of its special chemical structure and can make use of this paint and glue are valued. It is a mixture of several polymer compounds with different melting points so. Resin can be divided into two natural resins and synthetic resins. Resin types are very, very much, is widely used in light industry and heavy industry among people in everyday life among often be seen, such as plastics, resins glasses, paint. Resin lenses is to use chemical processing synthetic resin lens material after grinding
Pros: resin lens is composed of two fatty alcohol glycol and propylene polymerization reaction. Light weight, impact resistance, high temperature, light transmittance Cheap Mac Cosmetics Makeup wholesale Outlet is good, close to the glass lens performance, can block ultraviolet rays.
Disadvantages: the surface abrasion resistance, chemical resistance than glass is poor, the surface is easy to scratch, a large water absorption than the glass; high coefficient of thermal expansion, poor thermal conductivity, low softening temperature, easily deformed and affect the optical properties.
PC lenses:
General resin lenses are thermoset materials, namely raw material for the liquid to form a solid lens after heating. PC piece called "space film", "cosmic piece."
Advantages: light, lighter than traditional glass 57%, security, its impact resistance is 60 times that of glass, do bulletproof Fake Oakleys Gascan Sunglasses Cheap for Sale glass thickness 2.5cm. Thin, with a refractive index of 1.6 is equal to CR-39 lens thickness
Disadvantages: poor wear resistance