An important achievement of human scientific and technological progress-reflective materials
In 1920, people studied the phenomenon of light reflected by cat’s eye at night, and found that opals could be used to make road reflective signs to increase the safety factor of the road.
In 1930, people began to use glass beads with a smaller particle size to make road reflective surfaces, and the directional reflective effect was better.
In 1937, the US 3M company invented a new material called reflective film, marking the birth of the world's first reflective film.
In the 1940s, 3M Company introduced "engineering-grade" reflective film for road traffic signs. Today, 3M Company has developed 3M Scotchlite reflective products, the reflective intensity of its exposed reflective products is as high as 500 cd/(Lx·m2).
Japan began to produce reflective materials in the 1960s, which are mainly used for road safety signs in traffic, mines and factories. In 1975, the standard for safety reflective sheets and reflective tapes was formulated JISZ9117.
Other countries producing reflective materials include Germany, Italy, Finland, Denmark, and Sweden. my country began to develop reflective materials in 1960.
Since the 1980s, with the rapid development of highways and railways, the research and development of reflective materials has received more and more attention.
In the mid-1980s, my country began to research and develop civilian reflective fabrics.
Reflective materials, also known as retro-reflective materials or retro-reflective materials. The principle of light reflection is to introduce a high-refractive glass microsphere or triangular prism micro-lattice on the surface of the reflective material. When light hits the surface of the material, most of the light can be concentrated in a very small angle range and reflected back to the light source, forming a retro-reflection phenomenon.
Since the reflective material has the function of retroreflectivity, it has a visual effect that is a hundred times more eye-catching than other non-reflective materials, and can significantly provide its own visibility, so that people at the light source can easily find it. The clothing that uses the reflective material is made into Reflective ink, reflective cloth, reflective leather, reflective webbing, etc. not only improve the safety of night travel, but also greatly increase the appreciation of clothing.
