Currently the most popular international ultra-light frame material TR-90 (plastic titanium), with super toughness, xxx degree, impact resistance and wear resistance, low friction coefficient and other characteristics, can effectively prevent in the movement, due to the frame breakage, friction on the eyes and face caused by the injury.
Because of its special molecular structure, good chemical resistance, not easy to deform under high temperature environment, short time can withstand 350 degrees high temperature, not easy to melt and burn. No chemical residue is released, which meets the European requirements for food-grade materials.
Compared with nylon material, TR-90 material frames have the following characteristics:
1. Light weight: about half of the weight of the frame with less and plate, 85% of the nylon material, reducing the burden on the nose and ears, making it lighter and more comfortable to wear.
2, bright colors: more bright and excellent colors than ordinary plastic frames.
3, no chemical residue release, in line with European requirements for food-grade materials.TR90 frame surface lubrication, density 1.14-1.15, put in salt water will float, lighter than other plastic eyeglass frames, about less than half of the weight of the plate frame is 85% of the nylon material,
4, can reduce the bridge of the nose, ear burden, suitable for teenagers to use.TR90 material Made of wear-resistant, good chemical resistance, solvent resistance, good weather resistance, not easy to burn, high temperature resistance. TR90 is a memory polymer material, anti-deformation index 620kg/cm2, not easy to deform.
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Expanded Information
Applications of tr90
1, Automotive
Automotive electr. and electronics, lighting, cooling and climate control, fuel systems, powertrains, and chassis
2, Appliances and electronics
Electrical appliances, electromechanical devices, connectors, lighting, cell phones and other portable devices
3, Industrial and consumer products
Heating systems, Household goods, hydraulics and pneumatics, mechanical engineering, medical equipment, power transmission, sanitation, water and gas supply, sports and leisure, tools and accessories
4, Optics
Lenses, optical components, safety glasses, sunglasses, eyeglass frames
5, Packaging
Non-directional film, cosmetics, personal care, medical packaging
6, Food Contact
EU Requirements, FDA
7, Medical
USPVI, FDA
8, Water Contact
National Science Foundation's (NSF's) '61, KTW, WRAS, DVGWW270
Reference Source? /baike.baidu.com/item/TR90#2 "target="_blank "title="Only support takes effect when a link is selected">Baidu Encyclopedia-TR90
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