What is a pc lampshade? What is the function of pc lampshade?

what is a pc lampshade? What is the function of pc lampshade? PC lampshade is a series of lampshades made of PC (polycarbonate) for light bulbs, LED lamps, LED fluorescent lamps, car lamps and lamp housings. 1 materials. Polycarbonate is a thermoplastic resin with-[o-r-o-co]-link in its molecular main chain. According to the different ester groups in its molecular structure, it can be divided into aliphatic, alicyclic and aliphatic-aromatic types. Among them, aromatic polycarbonate is of practical value, and bisphenol A polycarbonate is the most important, and its molecular weight is usually 3,-1,. Polycarbonate, English name polycarbonate, referred to as PC. PC is an amorphous, odorless, nontoxic and highly transparent colorless or yellowish thermoplastic engineering plastic, which has excellent physical and mechanical properties, especially excellent impact resistance, high tensile strength, bending strength and compressive strength. Small creep and stable size; It has good heat resistance and low temperature resistance, stable mechanical properties, dimensional stability, electrical properties and flame retardancy in a wide temperature range, and can be used for a long time at -6~12℃; It has no obvious melting point and is in a molten state at 22-23℃. Due to the high rigidity of molecular chain, the viscosity of resin melt is high; Small water absorption, small shrinkage, high dimensional accuracy, good dimensional stability and low film permeability; It is a self-extinguishing material; Stable to light, but not resistant to ultraviolet light, good weather resistance; Oil-resistant, acid-resistant, alkali-resistant, oxidizing acids, amines and ketones, soluble in chlorinated hydrocarbons and aromatic solvents, easy to cause hydrolysis and cracking in water for a long time, with the disadvantages of poor fatigue strength, easy stress cracking, poor solvent resistance and poor wear resistance. Process PC can be used for injection molding, extrusion, molding, blow molding, thermoforming, printing, bonding, coating and machining, and the most important processing method is injection molding. Before molding, it must be pre-dried, and the moisture content should be less than .2%. When a little moisture is processed at high temperature, the product will produce white color, silver wire and bubbles. PC has considerable ability to force high elastic deformation at room temperature. The impact toughness is high, so it can be cold formed by cold pressing, cold drawing and cold rolling. The molecular weight of PC for extrusion should be more than 3,. Gradual compression screw should be used, with the length-diameter ratio of 1: 18 ~ 24 and the compression ratio of 1: 2.5. Extrusion blow molding, injection-blowing and injection-pulling-blowing methods can be used to form high-quality and transparent bottles. There are many kinds of PC alloys, which can improve the defects of high melt viscosity (processability) of PC and easy stress cracking of products. PC and different polymers form alloys or * * * mixtures, and improve material properties. Specifically, there are PC/ABS alloy, PC/ASA alloy, PC/PBT alloy, PC/PET alloy, PC/PET/ elastomer * * * mixture, PC/MBS * * mixture, PC/PTFE alloy, PC/PA alloy, etc., which have the advantages of two materials and reduce the cost. For example, in PC/ABS alloy, PC mainly contributes a lot. The three major application fields of PC are glass assembly industry, automobile industry, electronics and electrical appliances industry, followed by industrial machinery parts, compact discs, office equipment such as packaging and computers, medical and health care, films, leisure and protective equipment, etc. PC can be used as glass for doors and windows, and PC laminates are widely used as protective windows in banks, embassies, detention centers and public places, as well as aircraft cabin covers, lighting equipment, industrial safety baffles and bullet-proof glass. The PC board can be used as various signs, such as gasoline pump dial, automobile dashboard, warehouse and outdoor commercial signs, point sliding indicator, PC resin used in automobile camera system, dashboard system and interior decoration system, used as front lampshade, reinforced automobile front and rear fenders, mirror frame, door frame cover, operating rod cover, spoiler and PC used as junction box, socket, plug and sleeve, gasket, TV conversion device and communication under telephone line bracket. Switch box, telephone switchboard, switchboard components, relay shell, and PC can be used as low-load parts, which are used for household appliance motors, vacuum cleaners, hair washers, coffee machines, toasters, handles of power tools, various gears, worm wheels, bushings, guides, and shelves in refrigerators. PC is an ideal material for optical disk storage media. PC bottles (containers) are transparent, light in weight, good in impact resistance, resistant to certain high temperature and corrosive solution washing, and can be used as recyclable bottles (containers). PC and PC alloy can be used as computer racks, housings, auxiliary machines and printer parts. The modified PC is resistant to high-energy radiation sterilization, cooking and baking disinfection, and can be used for blood sample collection instruments, blood oxygenators, surgical instruments, renal dialyzers, etc. The PC can be used as helmets and helmets, protective masks and sunglasses. PC film is widely used in printing charts, medical packaging and membrane commutator. What are the advantages of pc lampshade PC(Polycarbonate) is the abbreviation of polycarbonate or polycarbonate, or PC engineering plastics for short. In fact, PC material is one of the engineering plastics. As a widely used material in the world, PC has its own characteristics and advantages and disadvantages. First of all, PC is an amorphous thermoplastic resin with excellent comprehensive properties, with excellent electrical insulation, ductility, dimensional stability and chemical corrosion resistance, high strength, heat resistance and cold resistance; It also has the advantages of self-extinguishing, flame retardant, non-toxic and colorable. You can see the shadow of PC plastic in every corner of your life, and its large-scale industrial production and easy processing make it extremely cheap. Its strength can meet all kinds of needs from mobile phones to bullet-proof glass. The disadvantage is that it is not hard enough compared with metal, which makes its appearance easier to scratch. However, its strength and toughness are good, and it has a long life regardless of heavy pressure or general beating.