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The material for PET
- Jan 08, 2018 -

PET is a highly crystalline polymer of milky white or light yellow. The surface is smooth and glossy. Resistance to creep, fatigue resistance, friction resistance and good dimensional stability, wear small, high hardness, has the largest of thermoplastics toughness: electric insulation performance is good, affected by temperature is small, but the corona resistance is poor. Non-toxic, weather-resistant, anti-chemical stability, low water absorption rate, weak acid and organic solvents, but not heat-resistant water to soak, not alkali. The glass temperature of PET resin is high, the crystallization speed is slow, the molding cycle is long, the molding cycle is long, the forming shrinkage rate is large, the dimension stability is poor, crystallization is the forming of brittleness, heat resistance low. In addition to the properties of PBT, PET has the following characteristics, which are improved by nucleating agent and crystallizing agent and fiberglass enhancement. 1. Long-term use of temperature and thermal deformation temperature is the highest of general engineering plastics thermoplastic 2. Because of the high heat resistance, enhance the PET in 250 ℃ soldering tin bath soak 10 s, little deformation does not change color, especially suitable for the preparation of soldering of electronic, electrical parts: 3. The bending strength of 200 mpa, the elastic modulus of 4000 mpa, the creep and fatigue resistance is also very good, high surface hardness, mechanical properties and thermosetting plastic. 4. The price of PET resin and enhanced PET is the lowest price in engineering plastics, with high cost performance, since the price of ethylene glycol (ethylene glycol) used in PET production is almost 50% cheaper than that of PBT.


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