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Rongsheng Solid-phase Viscosifying Information PET Sections

PET is a milky white or pre-yellow highly crystalline polymer with a smooth and shiny surface.Good creep resistance, fatigue resistance, friction resistance and dimensional stability, low wear and high hardness, with the largest toughness in thermoplastic plastics;Good electrical insulation performance, less affected by temperature, but poor corona resistance.Non-toxic, weather resistance, good stability of anti-chemical drugs, low water absorption, resistance to weak acid and organic solvents, but not heat-resistant water immersion, alkali resistance.

PET resin glass temperature is high, slow crystallization rate, long molding cycle, long molding cycle, large molding shrinkage, poor dimensional stability, crystallization of the molding is brittle, low heat resistance.

Through the improvement of nucleating agent, crystallizer and glass fiber reinforcement, PET has the following characteristics in addition to the properties of PBT:

1.The thermal deformation temperature and long-term service temperature are the highest among thermoplastic general engineering plastics.

2.Because of the high heat resistance, enhanced PET in 250℃ solder bath impregnation 10s, almost no deformation and no discoloration, especially suitable for the preparation of electronic and electrical parts soldering;

3.Bending strength of 200Mpa, elastic modulus of 4000Mpa, creep resistance and fatigue resistance is good, high surface hardness, mechanical properties and thermosetting plastics similar;

4.Because the ethylene glycol used in the production of PET is almost half cheaper than the price of butanediol used in the production of PBT, PET resin and enhanced PET are engineering plastics in the lowest price, with a very high cost performance.


PET is mainly used in fibers, to a lesser extent in films and engineering plastics.PET fiber is mainly used in the textile industry.PET film is mainly used for electrical insulation materials, such as capacitor, cable insulation, printing circuit wiring substrate, electrode slot insulation, etc.Another application area of PET film is film base and baseband, such as film film, X-ray film, audio tape, computer tape, etc.PET film is also used in vacuum aluminum metallized film, such as gold and silver wire, micro capacitor film.Another use for PET is blow moulding, a polyester stretch bottle used for packaging.

Glass fiber reinforced PET is suitable for electronic, electrical and automotive industries, used for a variety of coil skeleton, transformers, TV, tape recorder parts and shell, car lamp holder, lamp shade, white hot lamp holder, relay, selenium rectifier, etc.The current consumption ratio of PET engineering plastics in several applications is: electrical and electronic 26%, automotive 22%, machinery 19%, appliances 10%, consumer products 10%, and other 13%.At present, the total consumption of PET engineering plastics is still small, accounting for only 1.6% of the total PET.

Polyethylene terephthalate (PET) molding processing

PET molding processing can be injection molding, extrusion, blister, high frequency welding, blow molding, coating, bonding, machining, electroplating, electroplating, vacuum gold plating, printing.


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