Characteristics and uses of PC plastics First, what is PC material 1, PC Plastic refers to Polycarbonate, English name writing polycarbonate, so the abbreviation for PC. Is a colorless transparent non-qualitative thermoplastic material. 2, PC is polycarbonate, is one of the more common plastic materials, the material itself is generally used to make baby bottles, space cups, etc., but because it contains bisphenol A and controversial 3, pc plastic physical properties of the main data: specific gravity: 1.18 1.20 g/cm ³; Molding shrinkage: 0.5-0.8%; Molding temperature: 230-320℃; Drying conditions: 110-120℃; Can be used for a long time at -60~120℃. Second, what are the main characteristics of PC plastic 1, the impact strength is high, colorless and transparent, dimensional stability, color, electrical insulation are relatively high. 2, poor self-lubrication, stress cracking tendency, high temperature easy. Solution, and other resin compatibility is poor.
Wide, poor liquidity. Low moisture absorption, but sensitive to water, must be dried.
4, molding shrinkage is small, easy to melt cracking and stress concentration.
5. High melting temperature, high viscosity, fast cooling speed, high impact strength, low bending, compression and tensile strength.
Third, PC plastic injection molding process conditions
Drying treatment: PC material (cai liao ju) has moisture absorption, and drying before processing is very important. It is recommended that the drying condition is 100C to 200C, 3 to 4 hours. The humidity must be less than 0.02% before processing.
Melting temperature: 260~340C.
Mold temperature: 70~120C.
Injection pressure: Use high injection pressure as much as possible.
Injection speed: Use low speed injection for smaller sprue, high speed injection for other types of sprue.
Four, PC plastic main typical use Polypropylene
The three main application areas of PC engineering plastics are glass assembly industry and steam
Automobile industry and electronics, electrical industry, followed by industrial machinery parts, optical discs, packaging, computers and other office equipment, and, film, leisure and protective equipment. PC can be used as Windows and doors glass, PC laminate for banks, embassies, detention centers and public places of protective Windows, for aircraft cabin cover, lighting equipment, industrial safety plate and bulletproof glass.Polypropylene
PC board can be used as a variety of signs, such as gasoline pump dial, car dashboard, warehouse and open-air commercial signs, point sliding indicators,PC resin for automotive lighting system, instrument panel system and interior decoration system, used as a front lampshade, ribbedcar front and rear baffle plate, reflective mirror frame, Door frame sleeve, operating rod sheath, choke plate, PC is used as junction box, socket, plug and sleeve, gasket, TV conversion device, telephone line bracket under the communication cable connector, electric gate box, telephone switchboard, switchboard components, relay shell. PC can do low load parts, used for household appliances motor, vacuum cleaner, shampoo, coffee machine, baking machine, power tool handle, all kinds of gear, worm gear, shaft sleeve, guide gauge, refrigerator shelf. PC is the ideal material for optical disc storage media.A fixed high temperature and corrosive solution is washed as a recyclable bottle (container). PC and PC alloy can be used as computer frame, shell and auxiliary machine, printer parts. Modified PC is resistant to high energy radiation sterilization, cooking and baking disinfection, can be used for blood samples, blood oxygenator, surgical instruments, kidney dialyzer, etc. PC can be made helmets and helmets, protective masks, sunglasses and sports eye masks. PC film is used for printing charts, medical packaging, film commutator.
The application and development of polycarbonate is to the high composite, high function, serialization direction, has launched the CD, automobile, office equipment, box, packaging, medicine, lighting, film and other products of their respective grades.Polyformaldehyde
Contact Now
