The appearance of reflective powder is powder, which is a kind of reflective material with high refractive index glass bead powder. Silver gray reflective powder white reflective powder is the hemispherical aluminum plating of high refractive index glass beads, which provides the self reflective layer, while other factors such as aluminum slurry backing are less, which makes the beads have the self reflective function.
Parameters of reflective powder: roundness: ≥ 93% transparency: ≥ 95% refractive index: Nd ≥ 1.90, nd ≥ 1.93, nd ≥ 2.2 hardness (Mohs): 400 high temperature resistance: ≥ 850 ℃ density: 4.1 ± 0.2g/c ㎡ specification: 100-500 mesh (can be provided according to customer requirements)
The manufacturers of reflective materials wholesale the application of reflective materials in the identification industry in China started in the early 1980s. With the development of reflective materials industry in China, the use of luminous materials has gradually expanded, covering public security and transportation, traffic supervision, fire protection, railway, coal mine and other departments, and widely used in the fields of labor protection articles and civil products to ensure personal safety.
After the 1990s, the domestic reflective material market began to get on the right track. The product application field is more and more extensive, and the specialty is more and more detailed. The relevant departments have formulated international standards or industry standards for different reflective materials, such as national occupational standard en-47l (high visibility warning clothing), road traffic sign reflective film, etc. Western developed countries such as Europe and the United States also regard the standardized use of reflective materials as one of the important basis for insurance compensation, and use laws and regulations or encouraging forms to regulate or publicize the use of reflective materials, such as in the rain, fog, snow, night and other environments with poor visibility, the elderly and children must wear or wear signs or clothing with reflective materials when they go out.
China has about 60000 kilometers of railway lines. With the requirements of new construction, reconstruction, train speed increase and the implementation of technical conditions for retroreflective materials for railway signs (TB / t2929-1999), high-strength membrane is also being used in railway signs. 7-8 square meters of film per kilometer. The annual membrane consumption in China is about 2.5 million square meters.
By 2010, the total amount of membrane used in China’s market for roads and railways will be at least 25.6 million square meters, of which the amount of high-strength membrane accounts for about 45% and 11.52 million square meters. Due to the periodic loss of reflective powder materials, reflective film needs to be renewed every 7-10 years, and China is still increasing traffic investment, so the reflective film market is on a rapid upward trend at present.