name
(Code) Main Features and Usage Examples
thermoplastic plastics
polyethylene
(PE) High pressure polyethylene is soft, transparent and non-toxic; Low-pressure polyethylene is hard, wear-resistant and corrosion-resistant, and has good electrical insulation. High pressure polyethylene: film, hose and plastic bottle; Low pressure polyethylene: low-load chemical equipment, pipelines, gears and bearings.
polypropylene
Compared with polyethylene, (PP) has higher strength, hardness and elasticity, low density, good heat resistance, excellent electrical insulation and corrosion resistance, poor toughness and no wear resistance. Flanges, gears, fan impellers, pump impellers, handles, TV sets (tape recorders) shells, chemical pipelines, containers, medical devices and so on are easy to age.
Polychlorinated
ethylene
(PVC) has high strength and good corrosion resistance. Soft PVC, high elongation, soft products, good corrosion resistance and electrical insulation, waste gas discharge and detoxification tower, gas-liquid conveying pipeline, centrifugal pump, ventilator and connector; Soft PVC: film, raincoat, acid and alkali resistant hose, cable, insulation layer, etc.
polyphenyl
ethylene
(PS) Good corrosion resistance, electrical insulation and transparency, high strength and rigidity, low heat resistance and wear resistance, poor impact resistance, flammability, and easy cracking of bobbin, yarn opening and bobbin; Instrument parts, equipment shell; Storage tanks, pipes and bends; Lampshade, transparent window; Electrical insulation materials, etc.
Anti-lock braking device
Plastic has high strength and impact toughness, good wear resistance and heat resistance, high chemical stability and insulation, easy molding, good processability, poor high and low temperature resistance, flammable and opaque gears, bearings, instrument panel shells, refrigerator linings, various containers, pipelines, decorative plates in aircraft cabins, window frames, sound insulation boards, etc. It can also be used to make automobile parts such as car body, fender, handrail, air duct of hot air conditioner, etc.
polyamide
(PA)
(nylon or nylon) has good strength, toughness, wear resistance, corrosion resistance, shock absorption and self-lubrication, good formability, non-toxic and tasteless. Nylon 6 10/0,66,6 has large creep value, poor thermal conductivity, high water absorption and high molding shrinkage. , manufacturing small parts (gears, worm wheels, etc. ); Aromatic nylon is used to make wear-resistant parts, insulating materials and spacesuits at high temperature. It should be noted that the performance and size of nylon have changed greatly after water absorption.
polycarbonate
Acid ester
(PC) Insulating parts such as gaskets, bushings and capacitors have high tensile and bending strength, good impact toughness and creep resistance, high heat resistance, cold resistance and dimensional stability, high transparency, low water absorption, good insulation and processability, and poor chemical stability; Instrument shell and protective cover; Manufacture signal lights, windshields, cockpit covers, helmets, etc. In the aviation and aerospace industries.
polytetrafluoroethylene
(Plastic King)
(PTFE) has excellent chemical resistance, high and low temperature resistance, low friction coefficient, low water absorption, low hardness and strength, low compressive strength and high cost. Friction-reducing sealing parts, chemical corrosion-resistant parts and heat exchangers, as well as insulating materials under high-frequency or humid conditions, such as chemical pipelines, electrical equipment, corrosive medium filters, etc.
plexiglass
(plexiglass)
(PMMA) has a light transmittance of 92%, a relative density of half that of glass, high strength and toughness, ultraviolet resistance, atmospheric aging resistance, easy molding, low hardness, wear resistance, easy solubility in organic solvents, poor heat resistance and thermal conductivity, and large expansion coefficient. Aircraft cockpit cover, turret observation hole cover, instrument lampshade and optical lens, bulletproof glass, TV and radar screen, automobile windshield, instrument and equipment protective cover, etc.
thermosetting plastic
phenolic plastic
(PE) has certain strength and hardness, high wear resistance and heat resistance, good insulation and corrosion resistance, high rigidity, low hygroscopicity, small deformation, simple molding process and low price. Disadvantages are fragile and alkali-resistant plugs, switches, telephones, instrument boxes, automobile brake pads, internal combustion engine crankshafts, pulleys, silent gears in textile machinery and instruments, acid-resistant pumps for chemical industry, daily necessities, etc.
Epoxy plastics
(EP) High specific strength, good toughness, good heat resistance, cold resistance, corrosion resistance, insulation, water resistance, moisture resistance, mildew resistance, molding manufacturability and dimensional stability. Toxic and expensive plastic molds, precision measuring tools, potting equipment, preparation of aircraft paint, tanker paint, canned paint, printed circuits, etc.