As the name implies, luminous gems are gems that can shine at night. They are precious because:
1. Its raw materials are very expensive rare earth elements europium and dysprosium. The value of these two elements is more than 10,000 yuan per kilogram, even 10,000 yuan. It is conceivable that the cost of raw materials alone is enough to show its nobility.
2. The production process of luminous jadeite is very complicated and belongs to the high-tech field. In short, first of all, to make luminous powder raw materials, we must
After the ingredients are finished, it can be made by calcining at a high temperature above 1400℃. Secondly, the powder raw material is further pressed into an embryo and sintered once or twice in a pressurized electric furnace at a high temperature of 1600- 1700℃ to become a jade embryo.
3. The luminous jade blank is carved, polished and polished to become a handicraft.
4. Because the biggest disadvantage of luminous jade is that it is not corrosion-resistant, it will be corroded if it is soaked in acid or alkali solution for a short time; Even if soaked in water for a long time.
Will corrode and become rough. Similarly, human sweat (slightly acidic) will also make it corrode and turn black. The function of wearing as an ornament is seriously affected.
5. In order to solve this defect, it is necessary to fire a special glaze as a protective layer on the surface of luminous jade deep-processed products.
After research, this special glaze for luminous jade was developed, and the firing temperature was about 900 ~ 1000℃.
To sum up, a luminous jade product, like the legendary Laojun alchemy, was made after several high-temperature firings.
The technological process is complicated. Therefore, from a scientific point of view, luminous jade should belong to a special ceramic product with special properties.
The reason why it is called a special ceramic product with special properties can be reflected in the following points:
1, which has a very long laser exposure time: due to the use of rare earth elements unique to China as activators, the luminous jade has high initial phosphorescence afterglow intensity, stable luminescence and long luminescence time (this luminescent material is exposed to light for 24 hours, then irradiated under a fluorescent lamp with a distance of 27W for 30 minutes, and the initial brightness of the test is about 20000~ 55000 mcd/m2 after the light source is turned off. After 5 seconds, the residual brightness is 1 1570mcd/m2, the luminous time can reach more than 10 hour, and the longest visible afterglow can reach 60 ~ 70 hours. This product was patented on February 12, 2000 and obtained a patent certificate. As the inventor of this artificial gem is Mr. Hao Qinglong, and the name of the production company is "Beijing Hualong Yang Ya Science and Technology Development Co., Ltd.", the company named the luminous gem they invented as "Qinglong luminous synthetic luminous gem", which is referred to as "Qinglong luminous gem" for short. In July, 20001year, it passed the expert appraisal hosted by China Baoxie Artificial Products Professional Committee, and then it was put into mass production.
2. In addition to visible light (including sunlight, light, ultraviolet rays, etc.). ), heat energy can also make it glow, such as carving with luminous jade.
Our luminous cup can shine at the moment of pouring water, especially at night. It is a veritable "luminous cup".
3. The luminous jade material has been tested by the Optical Department of China Institute of Metrology with "Normal Total Emissivity Verification and Calibration System", and it is in the range of 2 ~18 μ m..
The infrared emissivity ε= 0.90 in the meter infrared band, which is a very high infrared radiation value. As we all know, infrared radiation has many good effects on human health, so it is also called "the light of life".
High infrared emissivity refers to the external energy that luminous jade can absorb in the infrared band (8 ~ 10μ m) that can be absorbed by human body.
Shoot at the human body and increase the health quality of the human body.
4. The domestic ETS-2 "Static Material Energy Testing System" and American "Air Ion Counter" instruments are used to measure the night light.
The test shows that luminous jade (static) can generate 300 ~ 400 (PCs/sec, cm2) negative ions in the air under normal indoor lighting conditions, and it can increase to 500 ~ 600 (PCs/sec, cm2) under ultraviolet radiation or direct sunlight. As we all know, negative ions have many benefits to human health. However, when measured by Japanese C0M-30 10 ion tester, there is no negative ion (the measured value is consistent with the background). The reason is that Japanese instruments convert the radiation intensity produced by radioactive substances in the sample into the number of negative ions, and there is no negative ion to indirectly prove that luminous jade does not contain radioactive substances. The reason why luminous jade can produce negative ions should be similar to tourmaline, that is, after being activated by light and heat, electrons leave atoms and become free electrons.
5. In addition to the ultraviolet spectrum, the electromagnetic wave with shorter wavelength is X-ray, and 5mm thick luminous jade piece is placed on the seafood 25 15.
Under the X-ray flaw detector, the working conditions are 195KV voltage and 100 mA current, and the irradiation time is 5 minutes. The results are as follows: the upper part of the luminous jade piece emits about 2 ~ 3 mm light (phosphorescence), while the rest does not emit light, and the intensity of the luminous part is not as bright as ultraviolet rays, or even as bright sunlight. This shows that although the wavelength of X-rays is shorter than ultraviolet rays, it is not as bright as bright sunlight.
6. Put the noctilucent jade pieces into the diluted monazite powder, which is radioactive and can release γ rays or even α and β particles for irradiation.
When it is taken out after 4 minutes, there is no luminescence phenomenon, but the powder can generate 5000 ~ 6000 negative ions of of╱╱s s and cm2 in the air for a long time after being detected by ETS-2 instrument, which proves that the luminescence and emission energy of this luminous jade is not caused by radioactive substances, but mainly caused by ultraviolet wavelength to longer visible light band or even infrared band, and the thermal energy of molecular movement can also be converted into light energy.
7. American PNA- E8363B vector network analyzer is used in the microwave darkroom laboratory of Beihang University.
The reflectivity test system of absorbing materials produced by our company is the core instrument. The absorption and reflection of centimeter waves by luminescent jade were tested in the radio wave band (test band frequencies are 8 ~ 12 GHz and 18 GHz), and some interesting phenomena were found, that is, luminescent jade can absorb radio waves (such as electromagnetic waves used in communication, television, radar, etc.). At 8 ~ 12 Hz (about 3 cm) The shorter the wavelength, the higher the frequency and the more absorption, because the longer the microwave wavelength, the smaller the energy.
According to the above experiments, it can be seen that luminous jade can emit light, produce negative ions and emit infrared rays because of external energy.
Excitation, such as solar energy, visible light, ultraviolet light, heat energy, etc. Instead of spontaneously and permanently generating negative ions and phosphorescence like some natural gems containing radioactive substances such as monazite (containing thorium and uranium) such as zircon, fluorite and tourmaline. In the 1950s, the luminescent materials of instruments and even watches were all made of powder containing radioactive element thorium oxide, so they could continuously emit weak light.
The radioactivity of luminous jade has been tested in the process of development and research. According to the determination of China Institute of Metrology (certificate number: FSPA 2001-124), the total α-radioactivity specific activity (BQ/g) of this substance.
According to the book Rare Earth Materials and Application Technology edited by Liu Guanghua, rare earth materials such as europium and dysprosium can also be used as radiation protection materials (P35). Therefore, it is totally unnecessary and unnecessary for many people to worry about whether luminous jade contains radioactive elements or even radioactivity.
In a word, luminous jade and its deep-processed products should be an energy converter, which can absorb the energy generated by external energy and convert it into secondary energy display beneficial to human body, such as light, negative ions and infrared radiation. , thus contributing to human health. As the saying goes, "take the essence of the sun, the moon and the stars and accept the spirit of all things in the world", and the luminous jade has this function.
As for the synthetic night pearl, what kind of health care function and function does it have on human body? The author thinks that further tests are needed (according to different reactions of different people), but first of all, it is certain that it is as harmless to human body as other jewelry and jade products. I string the night pearl into a bracelet and wear it on my wrist day and night. What surprised me most was that I fell asleep without any inner hint. From the first night, I obviously felt a deep sleep. Although I'm still dreaming, it's very fragrant and familiar. It's been like this for months. In addition, an obvious feeling is that the number of colds is reduced; But it has no effect on other symptoms such as leg pain.
To sum up, luminous jade should have a unique health care function for human body because of its chemical composition, manufacturing technology and various unique energy absorption and conversion characteristics. This article is hereby introduced in order to attract people's attention and benefit and help people's health.