How to make homemade phosphor? What is Phosphor? What s the use?

In order to understand the chemical composition of phosphor, we first thought of the luminescence of glowworms, and the luminescence principle of glowworms mainly includes the following series of processes.

Photoproteins Photogenic enzymes contain oxygenated photoproteins (emit green light).

Oxygenated photoproteins H2O photoproteins.

This is the reason why glowworms can continue to emit light, and the light flashes and flashes, it is worth noting that the green light emitted by glowworms is a kind of"Cold light"The result is a 97% conversion rate.

Secondly, we also pay attention to the luminescence of luminescent plastics, which are mainly mixed with some radioactive substances in ordinary plastics, such as 14C, 35SR, 90SR and Na, Th and luminescent materials ZNS, CAS, these sulfides are excited and emit visible light (cold light) under the irradiation of radioactive light.

The composition is: Categories.

Chemical Formula Color.

Density red pink.

Y2O3: EU white.

Green Pink CEMGL11O19: TB White.

Blue Pink Bamgal10O17: EU White.

Bimodal Blue Pink Bamga10O17: (EU, MN) White.

The composition of the upconversion phosphor, that is, the infrared excitation phosphor, is:

Chemical Composition: YeryBF3

Appearance: white inorganic powder.

Grain size: 30 nm

Excitation wavelength: 980nm

Glowing color: green.

Characteristics: high light transmittance, high solvent resistance, acid and alkali resistance.

The luminescence phenomenon of matter can be roughly divided into two categories: one is that the substance is heated and produces thermal radiation and emits light, and the other is that the object is excited to absorb energy and transition to the excited state (non-stable state) and release energy in the form of light in the process of returning to the ground state. Luminescent materials with rare earth compounds as substrates and rare earth elements as activators mostly belong to the latter category, that is, rare earth phosphors.

Rare earth element atoms are rich in electronic energy levels, because there are 4f orbitals in the electronic configuration of rare earth element atoms, which creates conditions for multiple energy level transitions, so as to obtain a variety of luminescence properties. Rare earth is a huge treasure trove of luminescent materials, and rare earth elements play a very important role in various luminescent materials developed by human beings.

Cathode ray luminescent materials – phosphors for display.

It is mainly used for various types of phosphor screens and displays such as televisions, oscilloscopes, radars and computers. Rare earth red phosphors (Y2O3 EU and Y2O2S EU) are used in color TV phosphor screens, bringing the brightness of color TVs to a higher level. Blue and green phosphors still use non-rare earth phosphors, but LA2O2S TB green phosphors have better luminescence characteristics and have development prospects.

Recently, color TVs have uniformly used the EBU (European Broadcasting Union) color, and the red pink is Y2O2S EU. Computers do not pay as much attention to color reproducibility as televisions, but rather to brightness, so they use the stronger orange red, and the content of EU in Y2O2S is usually 5 7Wt%. The content of EU in the red powder of color TV is about twice that of a computer.

What is Phosphor? What's the use?

Qinhe rotten, phosphor, commonly known as luminous powder, is often divided into two categories: photoinduced energy storage luminous powder and radioactive luminous powder. Photoluminous powder is a phosphor that stores light energy after being irradiated by natural light leakage, daylight light, ultraviolet light, etc., and then slowly releases it in a fluorescent way after stopping light irradiation, so it can still be seen at night or in the dark, and the duration is up to a few hours to more than ten hours.

The specific steps are as follows:

Second, then write down the font you want to generate in the specified place, and then choose what kind of font you want to generate, which is the first font to generate. Once generated, press and hold to save it.

Three, and then it's the main tool of Pixlr, Pixlr software, click in.

Fourth, after clicking in, you should choose the art font you saved before, crop it, and make it look good.

Fifth, then, select the one in the bottom and middle, and then the special effect, find the special effect that turns into white characters on a black background.

Sixth, the last is in the special effects, there is a special effect that will make the font glow, and there are different colors, here we use blue.

How to make high-intensity luminous powder.

1. Features: This luminous powder is different from the general fluorescent powder, it is non-radioactive, the light is short but the light effect is long, the cost is low, and the color is gorgeous.

2. Equipment: electric furnace, crucible, ball mill, drying equipment.

3. Formula: red liquid powder: 55 grams of barium sulfate, 40 grams of magnesium sulfate, 2 grams of lithium phosphate, 3 copper nitrate

grams, blue luminous powder: calcium sulfide 63 grams, sodium sulfate 5 grams, potassium sulfate 5 grams, strontium sulfate 10 grams, sodium chloride.

6 grams, 1 gram of silver nitrate, 10 grams of magnesium sulfide.

Purple luminous powder: 63 grams of calcium sulfide, 26 grams of magnesium sulfide, 10 grams of sodium sulfide, 1 gram of strontium nitrate.

Green glow-in-the-dark powder: 55 grams of calcium sulfide, 1 gram of potassium sulfide, 10 grams of sodium sulfide, 12 grams of barium nitrate, indium nitrate.

13 grams. Yellow luminous powder: 55 grams of barium sulfide, 40 grams of magnesium sulfide, 2 grams of aluminum sulfide, 3 grams of potassium nitrate.

Fourth, handicrafts: after the raw materials are prepared, put the high-temperature crucible on the electric stove and heat it, and the raw materials are in the pot.

You don't need a pot, just mix the ingredients and put them on the electric stove at a temperature of 133 degrees, and then burn them for 50 minutes by hand.

Pick out the impurities that are not completely colored, and then put the burned raw materials in the ball mill and grind them into fine powder, then soak them in water to precipitate, remove the water, and dry the sunken powder in the drying oven.

5. Use: Dissolve one part of colorless and transparent plexiglass in two parts of banana water. Join after 72 hours.

The right amount of luminous powder can be applied to watches, clocks, meters and crafts.

There are many ways to prepare phosphors, such as:

1) High-temperature solid-state method, the raw materials are prepared according to a certain proportion and put into the high-temperature furnace for sintering 2) Sol-gel method.

3) Co-precipitation method.

There are other methods such as hydrothermal method, microwave method, combustion method, etc., but none of them are mainstream. At present, the industrial production is using the high-temperature solid-phase method, which has large production capacity and low cost, and other methods are only used in the laboratory.

Upstairs. What materials do you want?

However, the light effect is long, the cost is low, and the color is gorgeous.

Equipment: electric furnace, crucible, ball mill, drying equipment.

Formula: Red liquid light powder: 55 grams of barium sulfate, 40 grams of magnesium sulfate, 2 grams of lithium phosphate, 3 grams of copper nitrate, blue luminous powder: 63 grams of calcium sulfide, 5 grams of sodium sulfate, 5 grams of potassium sulfate, 10 grams of strontium sulfate, 6 grams of sodium chloride, 1 gram of silver nitrate, 10 grams of magnesium sulfide.

Purple luminous powder: 63 grams of calcium sulfide, 26 grams of magnesium sulfide, 10 grams of sodium sulfide, 1 gram of strontium nitrate.

Green luminous powder: 55 grams of calcium sulfide, 1 gram of potassium sulfide, 10 grams of sodium sulfide, 12 grams of barium nitrate, 13 grams of indium nitrate.

Yellow luminous powder: 55 grams of barium sulfide, 40 grams of magnesium sulfide, 2 grams of aluminum sulfide, 3 grams of potassium nitrate.

Handicrafts: After the raw materials are prepared, the high-temperature crucible is placed on the electric stove to heat, the raw materials are in the pot, or you can not use the pot, directly mix the raw materials and put them on the electric stove to burn, the temperature is 133 degrees, after burning for 50 minutes, pick out the impurities of incomplete color by hand, and then put the burned raw materials in the ball mill and grind them into fine powder and then soak them in water to precipitate, remove the water, and dry the sinking powder in the drying oven.

Use: Dissolve one part of colorless transparent plexiglass in two parts of banana water. Join after 72 hours.

Over time, the color will turn red.

Prepare a bottle of Mountain Dew (any flavor is fine), baking soda, hydrogen peroxide Mountain Dew drink pour out 3/4, leave 1/4, then add a spoonful of pointed baking soda, add two spoonfuls of hydrogen peroxide (or three caps of a Mountain Dew bottle cap), and shake thoroughly!

And then... You've made it! I've done this experiment! A little redness.

Are you talking about glow-in-the-dark powder that automatically glows in a dark place? Or phosphors that show color when exposed to ultraviolet light, sunlight, or any light.

It's quite detailed, but some of the drugs may be a little expensive.

Hello, look at what you're using it for.

Luminous powder is used for injection molding: the ratio of luminous powder to plastic material is generally about 4 10, according to the color of the product, the principle of less light color and more dark color. One Ingredients:

First add the diffusion oil to the raw materials and stir for one minute, then add luminous powder and stir for one minute, and then add toner and stir for two minutes, the stirring time should not be too long, pay attention! Long-lasting luminous powder is the most taboo to rub with iron, and too long will turn the raw material black. 2. Injection molding machine:

The injection molding machine should be cleaned, the temperature should be adjusted to the lowest, and the injection molding machine can be injected, and the material should not be too long in the injection molding machine, so as not to burn, and the products injected by different machines are also different, new machines and old machines, domestic machines and imported machines, which need to be solved slowly in debugging. 3. Luminous powder: Long-acting luminous powder may cause blackening due to various reasons in injection molding, injection molding technology, injection molding machines, and the temperature of the solvent, and short-acting luminous powder (zinc sulfide luminous powder) performs better in injection molding blackening.

If there are no special requirements, short-acting luminous powder is also used.

Luminous powder is used for printing: In order to reduce the problem of luminous powder precipitation in the paint, you can use high viscosity resin, and add anti-settling agent, stir evenly before use, use thinner to adjust viscosity, and do not use heavy metal compounds as additives. The printing background is mainly white or reflective colors, which can improve the brightness and luminous time of the printed pattern.

The thickness of paint and ink coating should be greater than 100, such as 130 150, the best effect (with 80 mesh screen printing, two times can achieve this thickness). The recommended dosage of luminous powder is 10% to 70% of the total weight, and the more you use, the better the glowing effect. According to different printing materials, choose different types of transparent substrates, such as printing metal materials, you should choose metal-specific inks, such as printing PVC materials, you must choose PVC-specific inks, the higher the transparency, the better the effect.

For water-based paints and inks, luminous powders must be encapsulated with special microcapsules.

Luminous powder is used in coatings: 1. Resin and varnish: the selected resin should have good light transmittance, and at the same time, because the luminescent pigment is a weakly alkaline substance, the resin is best neutral or weakly alkaline, if the water-based resin is used to manufacture water-based coatings, the luminescent pigment needs to be treated with water resistance on the surface.

The types of resins and varnishes that can be selected are: epoxy resin (E440), polyurethane resin (or varnish), amino varnish, polyester resin, acrylic resin, hydroxy acrylic resin, acrylic polyurethane varnish (two-component), light-colored alkyd varnish, fluorocarbon resin, etc. Second, the choice of additives:

The additives in luminescent coatings are mainly composed of dispersants and anti-settling agents, and heavy metal compounds cannot be used as additives. Glass or enamel containers should be used in the preparation of coatings, the particle size of luminous powder is as small as possible, the ratio is about 30 60, when preparing coatings, can not be grinded, high-speed stirring methods should be used, the relative proportion of luminescent materials is, it is easy to sink when preparing coatings, and the storage period of luminescent coatings can be improved by using anti-settling agents. Do not close to fire, and do not store in your mouth.

Here's how to make it:

1. Configure the raw materials according to the color of the required luminous powder. The raw materials are as follows:

a) Red luminous powder: 55 grams of barium sulfate, 40 grams of magnesium sulfate, 2 grams of lithium phosphate, 3 grams of copper nitrate.

b) Blue luminous powder: 63 grams of calcium sulfide, 5 grams of sodium sulfate, 5 grams of potassium sulfate, 10 grams of strontium sulfate, 6 grams of sodium chloride, 1 gram of silver nitrate, 10 grams of magnesium sulfide.

c) Purple luminous powder: 63 grams of calcium sulfide, 26 grams of magnesium sulfide, 10 grams of sodium sulfide, 1 gram of strontium nitrate.

d) Green luminous powder: 55 grams of calcium sulfide, 1 gram of potassium sulfide, 10 grams of sodium sulfide, 12 grams of barium nitrate, 13 grams of indium nitrate.

e) Yellow luminous powder: 55 grams of barium sulfide, 40 grams of magnesium sulfide, 2 grams of aluminum sulfide, 3 grams of potassium nitrate.

2. After the raw materials are prepared, the raw materials are placed in a high-temperature crucible and heated on the electric stove.

3. You can also use a pot to stir the raw materials directly and mix them well, and then put them on the electric stove to burn at a temperature of 133 degrees.

4. After burning for 50 minutes, pick out the impurities that are not fully colored.

5. Then put the burned raw materials in the ball mill and grind them into fine powder.

6. Soak the precipitation with water, remove the water, and dry the precipitated powder in the drying oven.

Luminous powder is a phosphorescent self-luminous material that absorbs various visible light in bright places to achieve automatic luminescence in dark places, and can be recycled indefinitely. The product can be evenly distributed as an additive in various transparent media, such as rubber, plastic, ink, printing paste, coating, resin, glass, ceramic glaze, etc., to achieve the self-luminous function of the medium, showing good low-level lighting, indication and decorative beautification effects. Luminous powder is an environmentally friendly material, non-toxic, harmless and non-radioactive.

Luminous powder is divided into two categories: short-acting luminous powder and long-lasting luminous powder