PC lamp shade is made of PC (polycarbonate) as raw materials of light bulbs, LED lamps, LED fluorescent lamps, car lights and lamp shell series of lamp shade.
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2023-02-24 13:47
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Polycarbonate is A thermoplastic resin with - [O-R-O-CO] - chain in the main chain of the molecule, according to the different ester groups in the molecular structure can be divided into aliphatic, aliphatic, aliphatic aromatic type, which has practical value is aromatic polycarbonate, and to bisphenol A type polycarbonate is the most important, the molecular weight is usually 3-100,000.
Polycarbonate (English name Polycarbonate, PC for short) PC is a kind of formless, odorless, non-toxic, highly transparent colorless or slightly yellow thermoplastic engineering plastics, with excellent physical and mechanical properties, especially excellent impact resistance, high tensile strength, bending strength, compression strength; Small creep and stable size; It has good heat and low temperature resistance, stable mechanical properties, dimensional stability, electrical properties and flame retardant in a wide temperature range, and can be used for a long time at -60~120℃. There is no obvious melting point, melting state at 220-230℃; Because of the rigidity of the molecular chain, the viscosity of the resin melt is high. Small water absorption rate, small shrinkage rate, high dimensional accuracy, good dimensional stability, thin film permeability is small; It belongs to self-extinguishing material; Stable to light, but not resistant to UV light, good weather resistance; Oil resistance, acid resistance, alkali resistance, oxidizing acids and amines, ketones, soluble in chlorinated hydrocarbons and aromatic solvents, long-term in water easy to cause hydrolysis and cracking, the disadvantage is due to poor fatigue strength, easy to produce stress cracking, poor solvent resistance, poor wear resistance.
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Dongguan Hongzheng Plastic Products Co., LTD. Website revision online!
Dongguan Hongzheng Plastic Products Co., LTD., founded in 2005, is located in Tutang Industrial Zone, Changping Town, Dongguan City, Guangdong Province, China, with an independent plant covering an area of more than 5,000 square meters and more than 100 employees. Is a research and development, production, sales in one of the private enterprises, with general taxpayer qualifications. The factory has more than 20 domestic and foreign advanced plastic extrusion production lines, specializing in the production of all kinds of LED lampshade, LED lamp, LED lamp shell, PC lampshade, PMMA lampshade, as well as all kinds of PVC, ABS, PS, PP, PE, TPE, TPR, TPV, TPU and other rubber tube shaped material extrusion.
Specializing in the production of various LED lampshade, LED lamp, LED lamp shell, PC lampshade, PMMA lampshade,
Overview of PC lamp shade materials for LED lighting
led lighting is a new type of efficient solid light source using LED as light source [1,4]. It is called semiconductor lighting in China and solid-state lighting in the world. Its power consumption is only 1/10 of that of incandescent lamps and its service life is 100 times longer than that of incandescent lamps. It does not contain heavy metal mercury, so it has the characteristics of energy saving, long life, environmental protection, maintenance free and easy control. Therefore, led lighting is recognized as one of the most promising high-tech fields in the 21st century. PC lamp shade led unit area luminous intensity is too high, direct vision is very dazzling, glare, visual discomfort. For this, led lighting is needed
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Many LED fluorescent lamp manufacturers in the production process, and fluorescent lamp aging in the process of use there will be cracks. Now I will analyze the cause of this crack. For your reference. PC material originally for polymer, its toughness is often good, in the normal range of material characteristics, the proportion of PC molecule cracking is less, that is to say, the cracking phenomenon of PC material is smaller. So why now the PC lampshade will appear to have cracking? The main reason is that the structure of PC molecular chain is damaged and the molecular chain is disconnected. Resulting in product cracking or surface cracks. Factors affecting the structure of molecular chains
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