2016年2月27日星期六

Luminescent material

Emitting energy is an object of the absorption without hot stage, characterized by direct conversion of radiation phenomena. Light phenomenon widely exists in a variety of materials, there are different forms of light emitting semiconductor, insulators, organic matter and organisms.
Luminescent material is divided into two major categories of organic and inorganic. Usually capable of emitting light in the visible and ultraviolet region of the spectrum called crystalline inorganic crystal phosphors, and powdered luminescent material called phosphor
Commonly used by the excitation light emitting material is divided into:
(1)Photoluminescent Aluminum Sheet, the ultraviolet, visible and infrared light and excitation light, according to the luminescent properties, different scope of application, is divided into long-lasting light-emitting materials, light emitting materials and multi-photon emissive material.
(2) a cathode-ray-emitting material, an electron beam excitation light-emitting material, also known as electron beam excites the luminescent material.
(3) an electroluminescent material, by an electric field excitation light-emitting material, also known as the electroluminescent material.
(4) X-ray emitting material by X-ray radiation emitting material.
(5) chemiluminescent material, a chemical reaction of two or more chemical substances caused between the luminescent material.
(6) Radioactive luminescent material, natural or man-made radioactive materials and radiation-emitting material.

2016年2月24日星期三

Luminous use in plastics

● use: fluorescent pigments and short-acting luminous powder luminous powder long-term, it can be used for injection molding, plastic, blow molding, slush molding, rolling, extrusion, casting, etc., made of luminous plastic products.
● Proportion: directly added generally 10% or less. When special products (such as switches) need to add a large proportion, after the first use made of luminous masterbatch.
● tone color: luminous color is yellow-green appearance, direct use, also manufactures plastic yellow-green. To make other colors were luminous plastic products when purchased directly or luminous color or self-modulation.

2016年2月14日星期日

photoluminescent plastic to work and life

photoluminescent plastic to work and life. The ultrafine particles mixed with luminous material in textiles , the color more vivid , luminous textile children wear can reduce traffic accidents.
Luminous materials at home and abroad mainly zns ( ZnS ), srs ( strontium sulfide ) and cas ( calcium sulfide ) made ​​of glow green and yellow . But srs, cas deliquescent material , to a wide range of applications difficult. So mainly zns matrix luminous material on the market. Afterglow time , but it is only 1 to 3 hours , and the light ( such as sunlight ) , pigments in paint and black perishable moist air , so that in many applications in the field is limited. Add drill, bronze activated zns luminous afterglow although a long time.

2016年2月9日星期二

glow in the dark a role in preventing dangerous occurrence

glow in the dark a role in preventing dangerous occurrence .Three buildings : the building of the material applied to the walls , ceramic tile, the inner surface of elevators, bridges, roads , such as road signs, road studs , roadblocks , ports , outdoor advertising is not only beautiful and practical value. Other: If Crafts: amber , crystal sand, glass , painting ; toys: plastic toys , puzzles , building blocks ; clothing : hats , gloves , overalls , t-shirts , shirt, helmet , printing clothing ; masterbatch glow in dark , fishing and so on.

2016年2月4日星期四

Tritium glow in the dark pigments and promethium

promethium (Pm) and radioactive radium sulfate (Ra) , fluorescent agents and fluorescent agents , mostly zinc sulfide, strontium sulfide , calcium or zinc , and other alkylene sulfates. Tritium glow in the dark pigments and promethium (Pm) , though still radioactive , but the potential damage to the human body is much smaller. Tritium (3H or T) is an isotope of hydrogen , the nucleus consists of a proton and two neutrons , with radioactivity occurs β decay half-life of 12.43 years . Although tritium photoluminescent pigment suppliers also manufacture thermonuclear weapons , but its β decay will release the fast-moving electrons, does not penetrate the human body, only a lot of contact with and inhalation of tritium (3H or T) will cause the human body injury.