luminous and phosphor What is the difference

First, the main component of Epica and features luminous powder ;
1 luminous Description Material composition mixture 4SrO.7AL2O3: Eu (Eu as rare earth elements ) .
2 main non-toxic non-radioactive luminous , no burning, no explosion, free of heavy metals or other harmful chemicals .
3 luminous with a very stable gravel for gardens chemical properties , strong adaptability to environment and extremely long service life , luminous effect can be achieved using the longest 20 years . Luminous density ρ ≈ 3.6gcm3 7. Maintain good stability at -60 ℃ -600 ℃ condition .
4 luminous luminescent time is short, high brightness, long afterglow time , rich color varieties , colors and more .
5 can be used as an additive or luminous pigment. glow in the dark dyes in a variety of transparent or translucent medium, such as paint , oil, black, plastic , rubber stamp glass , ceramics, chemical materials , to achieve self-luminous function media should exhibit good low lighting instructions and decorative landscaping effect.

luminous production process

Features : Unlike the luminous phosphors , which non-radioactive , light long short but luminous efficiency , low cost , colorful. Second, the equipment: electric furnace , crucible , ball mill, drying equipment. Third, the formula : red luminous : 55 grams decorative aggregate , 40 g of magnesium sulfate , lithium phosphate, 2 g , 3 g of copper nitrate blue luminous : 63 g of calcium sulfide , sodium sulfate, 5 g , 5 g of potassium sulfate , strontium sulfate 10 g, 6 g of sodium chloride , 1 g of silver nitrate , 10 g magnesium sulfate . Purple luminous powder : 63 g calcium sulfide , magnesium sulfate 26 g , 10 g sodium sulfide , strontium nitrate 1 g . Green luminous powder : 55 g calcium sulfide , potassium sulfide 1 g , 10 g sodium sulfide , barium nitrate 12 g , 13 g of indium nitrate . Luminous yellow : barium sulfide 55 g , 40 g magnesium sulfate , aluminum sulfide 2 g , 3 g of potassium nitrate . Fourth, Crafts: after with a good raw material, the temperature on the crucible furnace heating , raw material in the pot , glow in the dark stone, mix the raw materials directly on the burning furnace , the temperature is 133 degrees , burning 50 minutes after hand -colored pick insufficiency impurities, and then placed in the cooked raw mill ground into fine powder and then soaked in water for precipitation to remove water, the sink in the powder can be placed in the drying oven . Fifth, use : put a colorless transparent plexiglass Two bananas dissolved in water . After adding 72 hours to the amount of luminous paint on watches, clocks , instruments and crafts .

color ink four major characteristics

Color ink Features:
1, the temperature change ( thermochromic ) water-based flexographic printing ink and water-based gravure inks thermal water-based flexographic inks for high-volume packaging production companies, for a variety of different types of flexographic printing presses, we can deploy the corresponding ink. Mainly used in cigarettes, food , beverages, pesticides and powdered paint pigments high-volume packaging printing. Thermochromic ink water-based security on tobacco packaging conform to the current proposed environmental requirements. In line with national policy -oriented , because of its beautiful and easy to detect , welcomed by many tobacco factory , but also for cigarette packaging printing companies dominate the market and lay a good foundation .
2 , solvent- solvent-based gravure ink thermochromic thermal gravure inks for high-volume packaging production companies , printing effect is good, color fast , full color . It can satisfy the plastics and tobacco packaging printing enterprises corresponding printing.
3 , thermochromic offset ink offset ink sensitive material can glow in the dark stone , but overall lighter than ordinary printing color offset printing ink colors , mainly related with the electrochromic material . Offset printing ink we develop a uniform , smooth and complex with fluorescence techniques can be used for notes , packaging, books and other security printing , which has multiple security features.
4 , silk screen printing ink type of security inks 350 mesh can be used to good effect pattern , smooth, full color, material can meet all of the above security printing requirements.

glossy ink Precautions

1 , since the mirror silver ink dilute water, it should choose a high mesh screen , not only that, squeegee hardness should be more rigid .
2 , mirror ink must stir before using it with aluminum powder mixed resin to fully ensure the emergence mirror effect , otherwise , masterbatch glow in dark the produce mirror effect .
3 , printing ink mirror when temperature and humidity are very important, because the ink on the screen easy to dry, so we can not screen in air circulation , otherwise very easy to block network , when the air humidity, mirror effect backward , so in the screen printing to prevent air flow and moisture as possible.
4 , screen tension slightly lower , the net transfer from also nearer, and appropriate pressure reducing scraping blade, otherwise the mirror effect will undermine the formation .
5, printing machinery , which can not be used to back blade with a hard aluminum or stainless steel , while the gum back blade should be used to ensure Photoluminescent Ceramic ink coating uniformity mirror , the mirror effect is the same.
6 , mirror effect mirror the way the ink is drying on the mirror effect in terms of heating and drying naturally dry less good , and note should be consistent with warming temperatures and drying time , otherwise the mirror performance and color saturation will differ.
7 , we must first understand the dilute water mirror ink printing technique is the key, when the printing speed is slow, on the one hand , dilute the ink will leak water shed mirror screen , on the other hand , mirror ink easy to absorb moisture from the air , after printing mirror effect was not good , for at the time of printing, the ink mirror inverted version must be continuous and rapid network printing , printing to complete successfully , that is, the printing side of the workpiece edge to check this rate, will give the effect of impact printing , such as blocking network , printing ink does not go on the screen slagging Orchestra.

About the luminous light-emitting basis

Luminous powder is common to us . So what luminous luminous basis of it, let's take a look .
1 , the light emitting luminous material is carried out according to the principle of photoluminescence , the excitation source is typically daylight and artificial light, it absorbs excitation light and stored , after the excitation light is stopped , then the decorative gravels in the form of slow- light slow release . absorbing light emitting → storage → → re-emitting , the process may be repeated indefinitely repeated , and the discharge cell phone battery charging → → → rechargeable discharge process was repeated using similar .
2 , the light-emitting material in the absence of external light source emits light in a dark environment , which is called the afterglow emission time period . Better performance of the long afterglow luminescent colors and diverse materials such as silicate system afterglow materials ,glow in the dark material activated afterglow characteristics of alkaline earth aluminate is the most superior, can achieve more than 20 hours afterglow - luminous .

A new kind of luminescent films

This luminescent films is a new kind of self-emitting product. It has great storing - emitting energy by absorbing the natural or artificial light such as sunlight; fluorescent light etc. When exciting for 10 - 30 minutes, it can glow for 8 - 12 hours in the dark. The characteristic of it is nontoxic and free from any radioactive and it has effect of repeatedly absorbing-emitting light.The glow products is suitable for any environment, such as high or low temperature, moist, acidity, basicity and need no outside energy.

Photochromic pigments

Photochromic pigments is a reversible chemical reaction, which is an important judgment standard, irreversible reaction occur under the action of light, also can cause the change of the colors, only belong to the category of general photochemical, not belong to the category of photochromic.