Photoluminescent Pigment

Photoluminescent Pigment
Photoluminescent Pigment
Photoluminescent Pigment
Photoluminescent Pigment
Photoluminescent Pigment
Brand
Raytop
Appearance
Yellow Powder
Color shade
Blue,yellow,red,purple
Finess
400-800 mesh
Package
10kg/25kg per fiber drum
Shelf Life
2 years
Transport
by sea or by air
The photoluminescent pigment is made by activating alkaline earth aluminate with rare earth elements.
Photolumiescent can glow in darkness for 12 hours continuously after it has absorbed various visible lights for 10-20 minutes. Its luminance brightness and duration is at least 30 times of traditional luminescent materials represented by ZnS:Cu, and can be used repeatedly.

What is photoluminescent pigment?

The photoluminescent pigment is made by activating alkaline earth aluminate with rare earth elements.

Photolumiescent can glow in darkness for 12 hours continuously after it has absorbed various visible lights for 10-20 minutes. Its luminance brightness and duration is at least 30 times of traditional luminescent materials represented by ZnS:Cu, and can be used repeatedly.

photoluminescent pigment.jpeg

Even we see the photoluminescent pigment appearance is yellow powder,but after they absorb the light in the day,they will glow different color lights.Used for PVC or coating or other plastics products,yellow green color is most popular.

Currently some sport shoes manufacturer also used photolumisnescent pigment for EVA shoes.To make the shoes special to attract children's eyes.


What's the application of photoluminescent pigment?

It can be made into various photoluminescent products, and have been widely applied to fire prevention, place-name signs, household electric appliances, clocks and watches, finery, garments, craftworks and gifts, and so on.


Technical Data of photoluminescent pigment

Other name:Glow In The Dark Pigment

Material:strontium aluminate

Appereance:yellowish powder

CAS No.:12004-37-4

EINECS No.:234-455-3

Usage:Ceramic Pigments, Coating Pigment, Cosmetic Pigment, Ink Pigments, Plastic & Rubber Pigment, Spray painting pigment;brushing

Other name:Glow In The Dark Pigment

Color in dark:yellow-green, blue-green, purple, skye-blue,etc

Application:coating pigment; ink pigment;

Partice size:5-15um,25-35um,45-55um,65-85um,etc.

Feature:glow in dark after absorbing light

What are the characteristics of the structure of photoluminescent polymers?

The characteristic is that it cannot be crystallized. The three-dimensional configuration of the photoluminescent polymer molecules will affect the performance of the material. The isotactic polystyrene has a relatively regular structure, can be crystallized, and has a melting point of 240 °C. The atactic polystyrene has an irregular structure, cannot crystallize, and has a softening temperature of 80 °C.

The whole process of solid photoluminescence

It is divided into the following three steps:

① Photoluminescence absorption. There are roughly three types: the first is matrix absorption, which excites electrons from the valence band to the conduction band. In the second category, it sends electrons in the localized state to the conduction band or excites electrons in the valence band to the localized state. The third type is limited to the absorption inside the separation center.

② Energy adjustment. After internal adjustment, part of the energy is surrendered to reach the luminous state.

③ The transition from the luminescent state to the ground state emits light. The photoluminescence of insulators is mostly the luminescence of discrete centers. It requires that the donor's luminescence spectrum and the acceptor's absorption spectrum overlap, and the distance between the two must be near the critical distance. The luminescence process may also be accompanied by quenching process, so that the energy is consumed as heat energy. For semiconductors, it is mainly compound luminescence. In semiconductors, electrons are easy to move, and its recurrent light is through the movement of carriers. There can also be discrete light-emitting centers, and the whole process of light-emitting is carried out in the center. This can also be caused by electrons and holes moving to the center to emit the characteristic spectrum of the center. Compound luminescence should meet two conditions, which are energy conservation and momentum conservation, which is difficult to meet. However, when electron and hole pairs meet, they form a combination called excitons due to the Coulomb gravity between them. It has no charge, can diffuse in the crystal, and can also be bound near an impurity. In the non selective excitation, the excitation density of the matrix is higher than that of the luminescence center. The trend of cathodoluminescence is similar to that when the matrix is excited. It should be that the electron hole pairs produced by high-energy electrons entering the luminescent body recombine at the luminescent center. In low dimensional materials such as quantum wells and superlattices, the energy bands are replaced by excitons, which can change the properties of luminescence.

Applications of Photoluminescent Pigments

The most common application of photoluminescent pigments is in fluorescent lamps. It is the ultraviolet light generated by the gas discharge in the lamp tube that excites the luminescent powder on the tube wall to emit visible light. Its efficiency is about 5 times that of incandescent lamps. In addition, the photoluminescence of "black light" and other monochromatic lamps is widely used in printing, reproduction, medical treatment, plant growth, insect trapping and decoration. Upconversion materials can convert infrared light into visible light, which can be used to detect infrared light, such as the light field of infrared lasers.

Photoluminescent pigments can provide information about the structure, composition, and atomic arrangement of the material, and are a non-destructive and highly sensitive analytical method. The application of laser makes this kind of analysis method go deep into the fields of micro area, selective excitation and transient process, making it further become an important research method, applied to the fields of physics, material science, chemistry and molecular biology, etc. New frontier disciplines emerge.

Photoluminescent materials used in clothing

The clothes worn by road signs and road maintenance workers and the clothes worn by police are all reflective materials. Some are luminous bodies made of photoluminescent luminous powder materials. Or use a small light source to make hollow objects with luminous powder. Sufficient light body display.


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