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The water bottle set is a kind of drinking water contai […]
The water bottle set is a kind of drinking water container that we often use in our daily life, and its materials are mainly divided into PP and PC.
PP material properties: Density, strength, stiffness, hardness and heat resistance are better than low pressure polyethylene, and can be used at about 100 ℃. It has good electrical properties and high-frequency insulation, and is not affected by humidity, but becomes brittle at low temperature, not wear-resistant and easy to age. Suitable for making general mechanical parts, corrosion-resistant parts and insulating parts.
When PP is processed, metal passivators and antioxidants (of course, trace amounts) should be added. These additives are not good for the human body. However, compared with other plastics, PP is non-toxic, and the added auxiliaries are the least harmful to people. In addition, PP can be boiled and disinfected in water below 120 °C. Therefore, if you want to use plastic cups, such as for children, if you use metal for fear of being scalded, and use glass for fear of being broken and scratched, you can use PP plastic cups. It is recommended to use metal, glass, porcelain cups.
PC is a new type of thermoplastic with a transparency of 90% and is known as a transparent metal. It is rigid and tough, has high impact strength, high dimensional stability and a wide range of operating temperatures, good electrical insulation properties, heat resistance and non-toxicity, and can be molded by injection and extrusion. The thermal performance of PC is excellent, it can be used for a long time between -100°C and 130°C, and the embrittlement temperature is below -100°C. They are widely used in:
Optical lighting: used to manufacture large lampshades, protective glass, left and right eyepiece tubes of optical instruments, etc., and can also be widely used as transparent materials on aircraft.
Electronic appliances: Polycarbonate is an excellent E (120 ℃) grade insulating material, which is used to manufacture insulating connectors, coil frames, sockets, insulating sleeves, telephone casings and parts, battery shells for miner's lamps, etc. It can also be used to make parts with high dimensional accuracy, such as optical discs, telephones, electronic computers, video recorders, telephone switches, signal relays and other communication equipment. Polycarbonate thin films are also widely used as capacitors, insulating bags, audio tapes, video tapes, etc.
Mechanical equipment: used to manufacture various gears, racks, worm gears, worms, bearings, cams, bolts, levers, crankshafts, ratchets, as well as some mechanical equipment shells, covers and frames.
Medical equipment: cups, cylinders, bottles that can be used for medical purposes, as well as dental instruments, drug containers and surgical instruments, and even artificial organs such as artificial kidneys and artificial lungs
Other aspects: used as hollow rib double-wall panels, greenhouse glass, etc. in construction; used as textile yarn bobbins, textile machine bearing bushes, etc. in the textile industry; daily use as milk bottles, tableware, toys and models, etc.
Through the above introduction, everyone must know whether the water bottle set is better than PP or PC. In terms of materials, PC should be better, and the price of PC is relatively high.