In ordinary life we often come into contact with pc material this material, it is extremely wide range, very strong functionality, but many people will have questions about it, pc material is toxic? Today I will help you to solve this problem, look down you will know!
pc material
A, pc material is toxic
Generally speaking, plastic products are more or less toxic, but when you time to use, the harmful substances will not be released, such as disposable mineral water bottles. But if you reuse for a long time, or add leftover oily substances, hot water, etc., harmful substances will be released from it, thus harming the human body.
Plastic products are divided into many categories, according to the chemical composition, plastic containers can be divided into PP, PE, PS, PVC, PET, NY, PC, PF, UF containers and so on. Among them, PP (polypropylene) can withstand high temperatures of more than 100 degrees Celsius, you can choose this raw material of plastic products to hold hot water.
Two, pc material characteristics
1, physical function
high impact strength, scale stability, colorless and transparent, good coloring, electrical insulation, corrosion resistance, good abrasion resistance, but self-lubrication is poor, there is a tendency to stress cracking, high temperature easy to hydrolyze, and other resins are poorly soluble.
2, molding function
(1) amorphous material, good thermal stability, molding temperature scale is wide, poor mobility. Moisture absorption is small, but sensitive to water, must be dried.
(2)High melting temperature, high viscosity, greater than 200g of plastic parts, it is appropriate to use heated extension nozzle.
(3)Cooling speed, mold pouring system to coarse, short as a guideline, it is appropriate to set up a cold material well, the gate is appropriate to take a large, the mold should be heated.
(4) material temperature is too low will cause the lack of material, plastic parts without luster, material temperature is too high easy to overflow edge, blistering plastic parts. Mold temperature is low shrinkage, elongation, high impact strength, compressive, flexural, tensile strength is low.
Three, pc material use
1. Optical lighting
Used in the manufacture of protective glass, large lampshades, optical instruments, left and right eyepiece barrels, etc., but also can be widely used in the aircraft on the bright material.
2. Electronic appliances
Polycarbonate is an excellent E (120 ℃) level of insulation materials, used in the manufacture of insulated connectors, coil structure, tube seat, insulating casing, telephone shells and parts, battery shells of the miner's lamps and so on. Can also be used for the manufacture of scale precision parts, such as optical disks, telephones, electronic computers, video recorders, telephone exchanges, signal relays and other communications equipment. Polycarbonate thin touch is also widely used as capacitors, insulated leather bags, audio tapes, color video tapes and so on.
3. Mechanical equipment
Used in the manufacture of a variety of gears, racks, worm gears, worms, bearings, cams, bolts, crankshafts, ratchets, but also for some mechanical equipment shells, covers and structures and other parts.
4. Medical equipment
Cups, cylinders, bottles and dental instruments, pharmaceutical containers and surgical instruments, and even can be used as artificial kidneys, artificial lungs and other artificial organs.
5. Other aspects
Architecture used as hollow rib double-wall panels, greenhouse glass, etc.; used in the textile industry as textile yarn tubes, textile machine tiles, etc.; daily for bottles, tableware, toys, models, LED lights shell and cell phone shells and so on.
From the introduction of the above you should understand the basic knowledge about pc materials, pc information has a wide range of uses, but all things favorable will have disadvantages, as long as you use reasonably, is not going to affect everyone's life. Well, today I will first say these things, I expect to help you oh!