In the pyrolysis process, the asphalt molecules undergo polymerization as the number of condensation rings gradually increases in the liquid state. Due to the free movement of molecules in the liquid environment, large aromatic planar molecules tend to take a certain direction by van der Waals force And the layers start to overlap, and there are small spheres similar to liquid crystals. This is the state of the liquid crystal called mesophase. Due to the different choices of the reaction process, it is also possible to generate non-equilibrium bonds, the molecules of which do not exhibit orientation, in this case it becomes glassy carbon. For example, by adding some cross-linking agent to the asphalt, the cross-linking reaction can occur before the asphalt molecules are converted to the mesophase state, so that the matrix obtained has a chaotic layer structure state. Whether or not to pass through the mesophase state, and the state of the mesophase, usually determines the basis of the C / C composite matrix structure formed later. Generally speaking, after the liquid asphalt passes through the mesophase liquid crystal state, the resulting C / C material matrix can be treated with high temperature to obtain a graphitized structure. Due to the simple equipment, the atmospheric pressure impregnation-carbonization process is a commonly used compact method for making asphalt-based C / C carbon composites. In this process, liquid green is immersed in the voids inside the preform under vacuum, and the subsequent carbonization process is carried out under normal pressure and in an inert atmosphere. The impregnation-carbonization process needs to be repeated many times (usually 5-6 times), resulting in a long preparation cycle, and because the carbonization yield of asphalt under normal pressure is low (about 50%), the density of parts obtained by this process is generally only 1.60g / cm3 or so, which is the deficiency of atmospheric pressure impregnation-carbonization process.
For the raw materials, we use the LED chip from Taiwan Epistar, Tyntek, Optotech. The stability of our products have been recognized by all of our custom.
We supply kinds of 10mm Through-hole LED with different wavelength from
365nm to 1550nm, which include the visible LED and the invisible LED.
10mm Red Through-Hole LED 10mm Red Through-Hole LED, Oval 10mm Red Through-Hole LED, Super Bright Red Through-Hole LED, Through-hole 10mm LED Diodes Shenzhen Best LED Opto-electronic Co.,Ltd , https://www.bestsmd.com
10mm Red Through-Hole LED(DIP LED) manufacturer from China.
For this catalog, we mainly introduce the 10mm Red Through-Hole LED.
10mm Through-hole LED, we supply 10mm red LED with water clear lens, 10mm red LED with diffused lens, 10mm red LED with red clear lens and 10mm red LED with red diffused lens. In addition, the shape can be 10mm round LED without flange(fringe), 10mm short head LED, 10mm bullet top red LED, 10mm round red LED with flange ect.
10mm Red Through-hole LED widely used for Red sign, display LED, indicator LED, die hole LED and 10mm round red with lamp holder because of the high brightness and the small size.
For the pin of 10mm red through-hole LED, we also have a lots of choice on it. For example: 10mm Red Through-hole LED flat pin, 10mm Red Through-hole LED curved pin, 10mm Red Through-hole LED braided pin ect.
For the brightness of 10mm red through-hole LED, we have three level: common bright 10mm red through-hole LED, super bright 10mm red through-hole LED and ultra bright 10mm red through-hole LED.
For the angle of 10mm red through-hole LED, 15 degrees, 30 degrees, 45 degrees, 60 degrees, 120 degrees are available.
All of our product are meet with Reach, CE, RoSH, SGS, EN62471 standards and have 5 years warranty.