luminous powder production process of

I. Features: This is different from the luminous phosphors, which non-radioactive, light long short but luminous efficiency, low cost, colorful. Second, the device: furnace, crucible, ball mill, drying equipment. Third, the formula: red Photoluminescent Tumbled Gravels: barium sulfate 55 g, 40 g of magnesium sulfate, lithium phosphate 2 g, 3 g of copper nitrate luminous blue: 63 g calcium sulfide, sodium 5 g, 5 g of potassium sulfate, strontium sulfate 10 grams, 6 grams of sodium chloride, 1 g of silver nitrate, magnesium sulfate 10 g. Purple luminous: 63 g calcium sulfide, magnesium sulfide 26 grams, 10 grams of sodium sulfide, strontium nitrate 1 g. Green luminous: 55 g calcium sulfide, potassium sulfide 1 g, 10 g of sodium sulfide, barium nitrate, 12 grams, 13 grams of indium nitrate. Yellow glow in the dark sand: 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, but also do not pan directly after mixing the raw material on the furnace to burn at a temperature of 133 degrees, 50 minutes to burn after hand-pick incomplete color 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 oven to dry. Fifth, use: the colorless transparent plexiglass dissolved in two parts of a banana water. 72 hours after adding an appropriate amount can be applied to the luminous watches, clocks, instruments and crafts.

Note the use of luminous

1. Avoid (Al2O3 with an acid neutralization reaction occurs) in an acidic environment. 2. Avoid contact with water, try sealed; (absorbs moisture in the air, so that does not emit light and glow in the dark pigments black lumps). 3. Avoid contact with metal (not affect the luminous saturation affect luminescence). 4. Avoid high temperature and high friction (luminous powder will change the existing structure). With radioactive luminous, is the incorporation of radioactive substances in the phosphor, the use of radiation emitted by radioactive substances continue to excite phosphors, these luminous luminous very long time, but little environmental pollution and toxic and hazardous applications. Edit this section apply in life applications people use in real life long luminous light-emitting properties, made weak lighting, the military has a special use, this material is applied to the aviation instruments, watches and clocks, windows, various switches on the machine sign, door handles, etc., can also be used together with a variety of translucent plastic pressed into a variety of symbols, parts, supplies (such as power switches, sockets, fishing hooks, etc.). These light-emitting components after light irradiation, or unexpected power outages at night, getting up after lightning and so it continues to emit light, so that people around discernible direction, bring convenience to work and life. The ultra-fine particles of luminous materials incorporated in textiles, to make the color more vivid, fluorescent pigments manufacturer textile kids wear, can reduce traffic accidents. Application in industry as luminous in the handicraft industry and the toy industry applications, more and more

customers began to change the use of luminous performance of their products, but many of the features luminous powder itself is not the majority of customers know, for example, there are now a variety of luminous powder on the market, there is a difference not only the quality, the price is also very different, a lot of customers is difficult to buy their favorite luminous. Mainly because there is no industry standard luminous yet, but it is not our traditional understanding of the consumer in the high price of the product, there must be a relatively good performance, especially crafts and toy industry, less demanding on the luminescence time for the body color and absorbance speed requirements to be higher, if some users choose luminous, without knowing the luminous performance of some time, it will take some detours in the selection and use of luminous in the final analysis, we must first understand after some simple properties of luminous choose luminous process and requirements for their best, do not blindly pursue energy light how long, all luminous in two hours after the light is very weak, said LED 10 hours, 20 hours is only the detection result by theory, in practice the effect is not obvious. Previous articles have said the problem absorbance response time, which is the point of application of crafts and toy industry is particularly important, but the duration of luminescence has not very important, signs and other luminous time indicates the industry was important, so I hope customers Select luminous time, to the rational choice for their company's products luminous, luminous willing to give you a broader application of the product.

Fluorescent pigments manufacturer, Lamp phosphors

Lamp phosphors are mainly three categories. The first class for ordinary fluorescent lamps and low-pressure mercury lamp, high pressure mercury lamp and a second category for self-ballasted fluorescent lamps, the third category for UV sources. There are also many types of phosphors, and the price is not the same, phosphor has good thermal stability, safety and environmental protection, suitable for all kinds of white, you can not adjust the lights of red, blue, yellow color equivalent,Fluorescent and low pressure mercury lamp phosphors
Antimony, manganese activated calcium halide phosphors and rare earth trichromatic phosphors.fluorescent pigments manufacturer
Antimony, manganese activated calcium halophosphate phosphor is 2 · Ca (F, Cl) 2 incorporating a small amount of activator antimony (Sb) and manganese (Mn) in CFC apatite matrix 3Ca3 (PO4) made after phosphor, is usually expressed as the formula:3Ca3 (PO4) 2 · Ca (F, Cl) 2: Sb, Mn
The preparation of this phosphor material may be used in many different, but the raw material of high purity requirements. Formulating the mixing amount of each raw material is first performed in a calcium halophosphate theoretical calculation, the calcium and the number of gram atoms of manganese phosphate and phosphorus from 4.9 gram atom ratio of the apatite structure: 3; followed by weighed, mixed, ground, sieved and then in a certain atmosphere (typically nitrogen), heated to about 1150 ° C sintering hours; removed after cooling, the UV lamp selection, and then ground and sieved namely finished.
When the activator Sb will absorb some of the energy of excitation energy in the form of optical radiation emitted by these phenomena simply changing the Mn content, you can get a different color temperature halogen phosphate phosphor.
Phosphor radiation absorbing ability and the degree of dispersion of the phosphor, and therefore greatly affect the particle size of the light-emitting luminance. Calcium halophosphate phosphor particle size is determined by the raw material particle size of CaHPO4 and therefore obtain a certain size, and crystal lattice CaHPO4, phosphor particle size can be controlled in a certain size (5 ~ 10 & micro;), thereby obtaining high emission luminance .garden decorative stones
Rare earth trichromatic phosphors in Pink for europium-activated yttrium oxide (Y2O3: Eu), green powder as cerium, terbium-activated aluminate (MgAl11O19: Ce, Tb), pink and blue for low-europium-activated barium aluminate magnesium (BaMg2Al16O27: Eu). Three kinds of powder can be obtained by mixing different color temperatures (2700 ~ 6500K), the corresponding lamp luminous efficiency of up to 80 ~ 100lm / W, color rendering index of 85 to 90. In general, green powder content, the lower blue powder content, the higher the efficiency of the lamp light. In addition, increased powder blue, the color temperature rises; Pink increases, the color temperature is lowered.
Matrix and the three-color dye-activating substance is different, but the key is that both of the light emitting rare activating substance (Eu, Ce, Tb, etc.), the use of rare earth metal ion outer layer (D → F) transition and emit light.
Rare earth trichromatic phosphor Fluorescent itself has many outstanding advantages, however, are expensive rare earth materials, resulting in higher costs tricolor light, limiting the development of the three primary colors of light. Narrow diameter or new coating technology to reduce the amount of three-Toner, with cheap colored powder to partially replace other one or two rare three-Toner, the same can be obtained by high-efficiency, high color rendering fluorescent lamps, but the light may be a little bad.

Luminous stone

Luminous stone in our ancient folk also called fluorescencegarden decorative stones, according to legend is extremely rare in the world can shine at night rocks. Famous British scholar Joseph Needham in the giant "Chinese History of Science and Technology" in the records, the ancient Chinese people love glowing pearl, it is because there is a spiritual thought glowing pearl is Zhenshanzhibao. So people look at it very precious treasure. Town house it can get rid of all evil. Forever family safe, brings good luck argument. Some people in India to glowing pearl called "Snake Eyes stone", Japanese scientists Ling Min wood series "treasure Iwashi" said the glowing pearl sacred stones in 1916. Luminous Stone
Luminous glow in the dark stones exactly what kind nature rocks? All times quite inconsistent statement. According to some experts, research, glowing pearl is not, as some people brag about as mysterious, but several special mineral or rock, after processing before it turned into a ball shape. Glowing pearl light emitted, not as mythical legends as can "underwater photos as day." But after absorbing heat energy (light or pouring scalding hot water) will issue a light in a dark room or the pitch-dark night, it will be placed higher in the appreciation of nature at room temperature, 10 minutes later, people in it and a half feet away where we can clearly see it gradually take the initiative to issue whole body shook and exciting through the white, like a moon. Luminous Stone
Why glowing pearl at night will send a strong yet beautiful light it? This controversial. Some gemologists think that because of the glowing pearl fluorite ingredients mixed arsenic sulfide, so there are "spiritual", both of which occurred during the day, "the intensification of activator" to release energy at night, turned into a beautiful luminous. And can continue to light in a certain period of time, even permanently luminous. The experiment, if not see the light glowing pearl daytime, late night, the light-emitting time, and vice versa faster, whether apparent intensification activator spirituality in it? This is going to a matter of opinion. These are just part of the expert's opinion, not necessarily comprehensive and accurate. There are many mysteries glowing pearl, the experts have not yet been understood, but one of the light-emitting substance what is the reason, still less luminous stone

Composition and luminous phosphors What are the main ingredients

First, the main composition and characteristics of luminous;
1. Material ingredient statements luminous mixture 4SrO.7AL2O3: Eu (Eu for rare earth elements).
2. The most important non-toxic non-radioactive luminous, no burning, no explosion, without other harmful heavy metals or chemicals.
3. powdered paint pigments with a very stable physical and chemical properties, strong environmental adaptability and extremely long service life, the effect can be achieved using the longest 20 years. The density of luminous ρ≈3.6gcm3 7. maintain good stability under conditions of -60 ℃ -600 ℃.
The luminous STORING short time, high brightness, long afterglow time, rich color variety, color and more.
5. luminous powder can be used as an additive or a pigment. Evenly distributed in a variety of transparent or translucent medium, such as paint, oil, black, plastic, rubber, printing glass, ceramics, chemical composition, to achieve self-stones for driveway media functions, showing a good indication of low lighting and decorative landscaping should effect. The crystalline structure of the material has a stable luminescent properties under the premise of the crystal structure can not be destroyed permanently extinction - Storage - light, performance in general life of up to 20 years. The material is in the range of -20 ℃ -1080 ℃. Luminescent properties of fundamental change. 300W high pressure mercury lamp at 1000 hours, no change of character and luminescent properties so you can use outdoors.
Second, the composition and characteristics of the phosphor;
1. Phosphor good heat resistance: maximum temperature of 600amp # 176C, suitable for high-temperature processing of various treatments. Good solvent resistance, acid, alkali, high stability. No color shift (MIGRATION), does not pollute.
2. Phosphor non-toxic, does not overflow when heated formalin (FORMALDEHYDE), can be used on colored toys and food containers. Color body will not overflow, when in the injection molding machine for mold, you can save cleaning procedures.
3. Fluorescence bright color, good hiding power (opacity can be added free agent).
Fine spherical particles, easily dispersed, 98% of the diameter of about 1-10u.
4. Phosphor plastic injection and extrusion of the application:
Applicable to a variety of plastics such as PE, PS, PP, ABS, acrylic, urea, melamine, polyester, resin, the fluorescent color. Recommended dosage of 0.05% to 0.5%, usually 0.05-0.1%, compounding should add a certain percentage of additives to enhance its stability and oxidation resistance

The most important function of luminous

1. The maximum glow in the dark powder function; luminous in glow in the dark sand places can last 12-15 hours, non-toxic, harmless, non-radiation! No burning, no explosion, does not contain heavy metals or other harmful chemicals, STORING short time, high brightness, long afterglow time, the maximum temperature can reach 1,300 degrees, dedicated to ceramics, luminous powder also has a very stable physical and chemical properties , strong environmental adaptability and extremely long service life, the effect can be achieved using the longest 30 years.
Note 2. luminous powder for coating; play luminous coating performance, must be complete and correct construction. Construction on the following considerations: the
(1) to understand the performance of luminous paint prescribed method of construction: if it is a professional construction time: Epica products company recommends spraying the polymer coated one to two agents on the ground floor and the completion of the film, so can enhance adhesion, weather resistance and paint face life.
(2) do a complete surface treatment: surface treatment proper or not, has a great influence on the performance and life of the film, it is necessary to completely remove rust, grease and other foreign matter to be constructed and fully dried after brushing.
(3) should be fully glow in the dark pigments paint Stir: luminous paint pigment, a mixture of resin solution and Yao Dexing luminous afterglow of a long-term science and technology, from manufacturing to use, there may be a period of time, but it is inevitable that the pigment separation of luminous and precipitation, and therefore should be fully stir before using.
(4) One of the brush thickness should not be too thick: once when the thickness of the brush if too thick, prone to effusion, wrinkles and other phenomena. So do the appropriate control, multi-layered coating to do the construction.
3. Stir luminous first before injection, not friction stir with iron, so luminous powder will be black, to use plastic stir stick or a layer of cloth, so luminous works best!

Luminous printing operation flow injection

https://www.facebook.com/pages/Glow-in-the-dark-powder/ First, the method for injection molding technology
Epica long-lasting luminous powder for injection, the luminous material and plastic material ratio is usually about 2% to 10% (under normal circumstances is 25 kg plus one kilogram of the material inside the afterglow luminous paint), according to the color of the product depth, light color add less, pay more glow in the dark sandcolors principle may be. First, when the ingredients, first spread of oil added to the raw stir for a minute, then add the luminous material stir one minute, plus toner stirring two minutes, stirring time is not too long, it is worth noting that very sensitive and long-lasting luminous powder iron friction material will darken too long. Secondly, injection confidential clean, the temperature should be transferred to a minimum, can be injection molded, the material in the injection molding machine time not too long, to avoid burning, injection molding machines of different products, there are differences between the new and old machines machines, domestic machines and imported machines, which require debugging slowly resolved. Again, Epica luminous materials also have certain requirements, long-term STORING powder due to various reasons such as injection molding technology, injection molding machines, melting temperature of the material so may cause black, short-acting light-emitting materials (zinc sulfide luminous powder) in injection molding in terms of injection black areas show a little better. Stir before first injection luminous, not friction stir with iron, so luminous turn black, use a layer of plastic stir stick or cloth, so luminous works best!
Second, luminous with automatic extinction, STORING, luminous performance, absorbing all kinds of natural light (sunlight), lighting, etc.
? Visible 5-15 minutes, you can continue to light at night or in the glow in the dark sandmore than 8-15 hours, and can be infinitely recycled.
2. stable physical and chemical properties, strong environmental adaptability, long life. Can in outdoor or harsh environments, and can resist ultraviolet radiation, high temperature (+ 1000 ℃) and low temperature (under 1-20 ℃ in, the same black, not bad, good chemical resistance.
3. luminous product specifications: diameter (5um-200um) mesh (100 mesh -800 mesh) (1000 -2000 Head Head)
4. The use of luminous: not with opaque material mixed use, in order to avoid reducing its luminous efficacy. Must not contain heavy metals and calcium, diluent, adjuvant mix. Can not make a strong grinding, stirring Load method should be used.
5. luminous plastic injection, extrusion application notes:
● luminous with various types of plastic injection, extrusion, such as: PP, PE, PVC, PU, PS, ABS, TPR, EVA, nylon, acrylic and so on.
● When luminous direct injection, should be added the right amount of diffusion of the oil (white wax), the proliferation of pink slip agent additives, so luminous even better in combination with plastic, preferably using masterbatch, will be more evenly dispersed, masterbatch tablets before use must fully dry.
Third, the luminous Caution: play Epica luminous paint performance, must be complete and correct construction. Construction on the following considerations: the
(1) to understand the performance of luminous paint prescribed method of construction: if it is a professional construction time: We recommend spraying the polymer coated one to two agents on the ground floor and the completion of the film, so can enhance adhesion, weather resistance and paint life.
(2) do a complete surface treatment: surface treatment proper or not, has a great influence on the performance and life of the film, it is necessary to completely remove rust, grease and other foreign matter to be constructed and fully dried after brushing.
(3) should be fully luminous paint Stir: luminous paint pigment, a mixture of resin solution and Epica luminous afterglow of a long-term, from manufacture to use, there may be a period of time, but it is inevitable that the pigment was isolated and luminous of precipitation, Therefore, before using, stir.
(4) One of the brush thickness should not be too thick: once when the thickness of the brush if too thick, prone to effusion, wrinkles and other phenomena. So do the appropriate control, multi-layered coating to do the construction.
? (5) photoluminescent pigment than the major attention when using the mix.
(6) metal materials have a greater impact on the luminescent properties, should avoid contact with metal.
Most (7) luminescent pigment sparingly soluble in water, decomposed in acid, so the system can not be applied to water-soluble and acid system.
(8) according to your manufacturing process, select the appropriate size of the luminous pigment.
(9) should be stored in ventilated, dry environment, pay attention to moisture, failed once finished using luminescent pigment should note sealed.
(10) is usually a large
https://www.facebook.com/pages/Glow-in-the-dark/ powder particle size, brightness better. However, we recommend, first of all according to your manufacturing process, select the appropriate size of the luminescent pigment

Leak phosphor mainly be used in any industry

https://www.facebook.com/pages/Glow-in-the-dark-material/ First, is mainly used to bag leak detection, leak detection equipment, pipeline leaks leak, leak detection circuit is smooth, the machine detects whether the line is broken.
Second, the phosphor good heat resistance: maximum temperature of 600amp # 176C, suitable for high-temperature processing of various treatments. Good solvent resistance, acid, alkali, high stability.
Third, the phosphor of plastic injection and extrusion applications:
A. applicable to all kinds of plastics such as PE, PS, PP, ABS, acrylic, urea, melamine, polyester, resin, the fluorescent color.

B. recommended dosage of 0.05% to 0.5%, typically 0.05-0.1%

C. Mixture should add a certain percentage of additives to enhance its stability and oxidation resistance.

Fourth, the phosphor coating and screen printing ink of the application:

A. inorganic
https://www.facebook.com/pages/Glowing-rocks/ are dispersed in the paint and ink, does not dissolve in the paint and ink. Phosphor is dissolved therein.

B. can be used in oil and water-based coatings and inks it. Neutral or alkaline transparent resin (pH 5-7 mass most applicable) should be used. Recommended dosage of 2% to 3%

C. apply to all types of printing, including screen printing, gravure and letterpress printing.

D. Background printing is recommended to use a white or light-colored, color change can improve the degree of difference.

E can be mixed with dyes or pigments, with a greater variety of color variations.

F. printed material is different, you should choose a suitable substrate of paint or ink.

Five, offset or gravure colorless fluorescent ink should note the following:1. The transfer roller and the plate needs to be cleaned, using a new ink roller is more ideal, otherwise, a very small amount of colored ink also has the potential to colorless fluorescent colored ink, affect the printing quality of appearance.
2. Different papers have different effects on the colorless fluorescent colors. Since most of the surface of the paper have been processed fluorescent whitening agent, a fluorescent whitening agent in the ultraviolet lamp emits blue color light, and therefore, in the absence of brighteners paper (bond paper) sheet containing whitening agent (such as plain paper), the effect of color colorless fluorescent ink, there are some differences. Need to mention that it is precisely because of this reason, too colorless fluorescent blue ink for paper containing strong fluorescent brighteners. Otherwise, the blue fluorescence will "drown" in the blue whitener.
3. Such printing inks can be printed on non-patterned part, can also be printed on the pattern. To highlight the fluorescent effect, usually printed on the outermost layer of the pattern.