Articles

Setting characteristics of photoluminescent signs at different positions

Luminous signs are mainly used in fire evacuation indicator system, place-name indicator system, underground rail tunnel indicator system, shopping mall evacuation indicator system, public information indicator and warning system. The safety sign should be set at the main entrance and exit of the hazard source and near the hazard point. The use of luminous signs can not only serve as an indication of ordinary signs, but also play a guiding role in emergency evacuation. When there are multiple risk...

precautions for mixing ink or paint with luminous powder

As a kind of functional coating, it is made up of luminous powder, base material and various auxiliaries. After applying luminous powder, it absorbs light for 10-30 minutes, and can continue to shine in the dark for 12 hours, and the process of light absorption and luminescence can cycle indefinitely, presenting good low-degree emergency lighting, indicating signs and decorative beautification effect. And in luminous powder inks need to pay attention to the following: 1, mix with neutral or weak alkaline...

Several methods for making encapsulated type glow powder

Stearic acid coated luminous powder: stearic acid is often used as a lubricant in polymer processing to reduce the friction and adhesion between melt and processing machinery and between molecules in melt, improve fluidity, improve processing formability, improve production capacity and product appearance quality and finish. Coupling agent treatment of rare earth luminous powder: from the perspective of chemical structure and molecular aggregation state, inorganic materials are very different from organic polymers, and it is difficult to form the required...

Rare earth luminescent materials new fulcrum

White LED light source is a green energy-saving light source. At present, it mainly USES the combination of InGaN ultra-bright blue chip and rare earth yellow and red phosphors with high light conversion efficiency to produce composite white light. It is regarded as the synonym of advanced technology and green lighting, and will become the leading role in the future lighting and display market. As we all know, the development of LED industry cannot be separated from rare earth...

Application of luminous powder rolling process

Calendering A method of forming a luminescent powder continuously into a film or sheet. In the rubber processing process, the luminous powder and the rubber compound can be calendered into a film of a certain thickness and width, or the pattern can be pressed on the film for the formation of the next product. The calendering method is also used to hang the fabric and the steel cord, and to bond the film to the film, the film and...

Inkjet printing luminous film instructions

Inkjet printing luminous film (luminous paper, luminous photo printing film) Is a new generation of luminous digital output material, high resolution can be directly printed photos. This product has been tested by the relevant departments of the state, and it is non-radioactive, non-toxic and harmless. It is the only green energy-saving high-tech product that can emit light at night and display its contents without consuming electricity. After 5-15 minutes of visible light, the product can spontaneously light in the dark for...

Luminescence mechanism of long afterglow luminescent materials

Hole transport model For this type of material, the earliest model was the hole transport model proposed by Matsuzawa et al. in the SrAl2O4:Eu, Dy system. Based on this model, Matsuzawa believes that in the long afterglow materials SrAl2O4:Eu, Dy, Eu is the electron capture center and Dy is the hole trapping center. When the material is excited by UV, Eu can capture electrons to become Eu, and the resulting holes are captured by Dy through the valence band to...

Luminous powder silica coating modification treatment

Water-based luminescent powder is modified by silica cladding on SrAl2O4: Eu2+ and Dy3+ long afterglow luminescent powder by chemical precipitation method, which can effectively improve the water resistance of luminescent powder, but has little effect on the long afterglow luminescence characteristics of luminescent powder. Emulsion paint with modified luminescent powder has the advantages of storage stability and good water resistance. Luminescence performance before and after modification of luminescent powder: the peak types and peak positions of the excitation and...