1. Why NightLight20 is the best choice for you...
NightLight20 glows for 14 hours after its 10-minute exposure to any light source. It is well-known that some substances can convert the absorbed energy into visible light, which is called fluorescence and being used extensively in kinescope and fluorescent lamp. The re-emitted light surviving after the exictation is called phosphoresence. The longer afterglow of phosphorescence is called photoluminescence. The phosphorescence used in watch industry is zinc sulfide with copper. But it did not work well because of its low luminosity and quick fading. Radioactive promethium once was added to phosphorescence for providing longer luminosity. Due to its radiation the use of promethium was limited and dangerous. Under such circumstances, radiation-free NightLight20 is developed and used in many industries.
2. NightLight20: the most effective and advanced photoluminescence
Without any radiation NightLight20 is the best photoluminescence made of rare earth's materials. The following features make it stand above all the existing glow-in-dark materials. (1) No radiation: NightLight20 is safe for human being. (2) Outstanding luminosity: (3)High Luminosity The luminosity of NightLight20 can reach as high as 1794 mcd/m2 immediately after the removal of light source. The attenuation of luminosity is slower than other photoluminescence materials. The luminosity of NightLight20 can maintain for 20 hours at 46mcd/ m2. (4)Enduring luminosity NightLight20 can repeatedly work for over 10 years in stable condition. (5) Stability of Physical and Chemical Properties
After its exposure to any light for 10 minutes
NightLight20 glows for 20 hours in dark.
NightLight20 works perfectly between +500 o C and -20 oC. NightLight20 can resist strong ultraviolet radiation. It does not discolor under 300-watt high mercury lamp for 1000 hours at 35oC - 40oC, 80% humidity. Almost all chemicals does not affect NightLight20 which functions normally outdoor under worst environmental conditions.
(6) Fine Particles
NightLight20 consists of fine particles as tiny as 10 um diameter(400 mesh passed). So it can be blended well with ink, paint or plastic materials for multifunctional applications.
3. Basic Properties
Article No.:
NightLight20 Appearance: Fine Powder Weight: 3.6 + 0.1 (25Co) Water Content: < 0.05% Grain Size:
400 mesh passed Color: White Light color: Light Yellowish Green Excitation Wavelength: 200 - 450 um Peak Wavelength of light: 525 um
4. Luminosity:
(1) Test Method Vertical Irradiation: 0.2g of NightLight20
powder (size 10 um diameter) is used under a 15-watt fluorescent lamp at 20cm distance for 15
minutes (the room temperature: 25Co, humidity: 65%). After the removal of lamp the degree of NightLight20 luminosity is measured by TOPCON BM-5, a special luminosity tool.
(2) Result: See the attached attenuation diagram Time(minutes were recorded after the removal of lamp) Luminosity(mcd/m2)
5. Applications
(1) Glow-in-the-dark paint A glow-in-the-dark paint can be extensively used in different fields. To maximize its luminosity, a white paint
is used as the base coating before NightLight20 is applied. The proposed proportion of NightLight20 to paint is 1: 3 in weight. (2) Glow-in-the-dark ink By blending size-below-10um
NightLight20 and ink, a glow-in-dark ink can be easily made for printer and fabrics. The proposed proportion of NightLight20 to ink is about 2: 3 in weight. (3) Glow-in-the-dark dyestuff NightLight20 dyestuff is used for textile industry. It can produce dramatic effect for fashion and other fields. (4)Glow-in-the-dark powdered paint By mixing with powdered
paint, NightLight20 powder is very effective for painting efficiency.
6. Applications of NightLight20
(1) Signs in the dark Applying NightLight20 to items such as extinguishers, fire alarms, lifesaving equipment, locks, sockets, switches, outlets, keys, flash light, emergency kits, staircases, exit doors, roads, etc, all of them are recognizable and accessible in dark. (2) Safety Applying NightLight20 to devices such as signals, route signs, roads, emergency equipment, working hats or clothes and helmets. (3) Watch Industry: Plating NightLight20 on watch, clock and instrurments which can glow in dark for up to 14 hours. (4) Architecture NightLight20 can make building, monument and bridge glow in dark. (5)Promotion With NightLight20 thousands of promotional products can be made: ad, picture, necktie, stage settings, label, table clothes, curtain, artificial flower, wall paper, textile, necklace, earrings, lampshade, novelty, stationary and toy
7. Storage:
(1) Storing The Powder
Store NightLight20 powder in a dry place not exposed to high humidity.
(2)
Reducing The Luminosity
Water would reduce the luminosity of NightLight20. But
NightLight20 can blend well with oily liquid or material such as synthetic resins, paint, and ink. By doing so it can resist water and high humidity because of its oily feature.