I. Basic knowledge of spectrum: ULTRAVIOLET rays are divided into three types according to different bands: UVC for those with a wavelength below 250 nm, UVB for those with a wavelength between 250 and 320 nm, and UVA for those with a wavelength between 320 and 380. The visible light range is 380-800 (nm) and the infrared light range is 900-1800 (nm). Two, photochromic principle: the use of UVA energy to open the photosensitive molecular bonds, so that it from...
The utility model relates to a special luminous garden step, belonging to the field of garden engineering. It includes steps, plant planting trough and connecting trough. Plant planting slots are installed at both ends of the step, leaking holes are installed on the step tread, luminous plastic pipes are installed on the edge of the step tread, gutter is installed inside the step, and drain holes are installed on the kick surface of the bottom step. The drainage hole...
One, coating production technology Coating production process refers to the production of paint raw materials and semi-finished products through the equipment they are processed into a finished product of a material transfer or transformation process, its production process includes: mixing, homogenization, dispersion and other operational processes. The different that produces factory enterprise to be able to be mixed according to coating product kind and its processing characteristic commonly, choose appropriate, decide basic craft mode again. One of the most critical parts...
A new red luminescent powder is composed of BEiyQia8_x_yZnxTi03:aPr3+, bLu3+, cNa+ and dB3+, with titanate as the substrate, Pr3+ as the activator and Lu3+ as the sensitizer. The luminous powder is used to prepare the luminous red ceramics. The best known green luminescent powder is SrAl2O4 = Eu2+ and Dy3+, while the blue luminescent powder is SrAl2O4 = Eu2+ and Nd3+. The chemical properties, afterglow intensity and attenuation time of these two luminescent powder are similar. But there is no...
The utility model relates to the application of luminous patterned baking paper in making ceramic products, belonging to the technical field of building materials. At present, there are a variety of ceramic products on the market, which can basically meet the demand. But the surface of the product is less beautiful. The purpose of the invention is to provide the application of luminous pattern baking paper in making ceramic building materials and daily articles. The invention adds luminous powder sold on...
1 cm (cm)=10-2m =10 mm (mm); 1 mm (mm)=10-3m =1000 microns (um); (3-5 micron um noctilucent powder = 0.003mm noctilucent powder) 1 micron (um)=10-6m=1000 nanometers (nm); (3-5 micron um noctilucent powder = 3000nm noctilucent powder) 1 nanometer =10-9m [Virus size about 100 nanometers Angstrom (Ao) = 10-10 m; One femtometer (FM) = 10 to 15 m Nanometer (nm)= [10 to the -7 to the -9 meters] = size of fineness, about 180,000 mesh ~ 18 million mesh unit conversion. Micron (um)= [10 to the -6...
Ultraviolet fluorescent ink is one of the most mature anti - counterfeiting inks in the market, in the ink to add the corresponding visible fluorescent compounds and made. The ink is printed with a fluorescent color that can be excited by ultraviolet light at 365nm (long wave) or 254nm (short wave) wavelengths. According to the different excitation light source, can be divided into long wave fluorescent ink, short wave fluorescent ink and double band fluorescent ink. According to the form...
Many friends should have used or heard of overnight luminous powder, but don’t know the difference between long-acting luminous powder and short-acting luminous powder. In order to make it easier for everyone to distinguish, choose the product that suits you for the following reasons Advantages and disadvantages of short-acting luminous powder 1. Zinc sulfide short-acting luminous powder has a short luminescence time, and it can only emit light for half an hour at most once it is stored. 2. Zinc sulfide short-acting...
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