PET plastic bottle

PET plastic is the abbreviation of English Polyethylene terephthalate, referred to as PET or PETP. Chinese meaning: Polyterephthalic plastics, mainly including polyethylene terephthalate PET and polybutylene terephthalate PBT. Polyethylene terephthalate is also commonly known as polyester resin. It is a polycondensate of terephthalic acid and ethylene glycol, together with PBT, collectively referred to as a thermoplastic polyester, or a saturated polyester.

characteristic

PET is a milky white or pre-yellow highly crystalline polymer with a smooth and shiny surface. It is resistant to creep, fatigue, friction and dimensional stability, low wear and high hardness, and has the highest toughness in thermoplastics. It has good electrical insulation properties and is less affected by temperature, but has poor corona resistance. Non-toxic, weather-resistant, chemical-resistant, good water absorption, low acid resistance and organic solvents, but not soaked in heat-resistant water, not resistant to alkali.

The PET resin has a high glass transition temperature, a slow crystallization rate, a long molding cycle, a long molding cycle, a large molding shrinkage ratio, a poor dimensional stability, a brittleness in crystallization, and low heat resistance.

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

1. The heat distortion temperature and long-term use temperature are the highest among thermoplastic general engineering plastics;

2. Because of the high heat resistance, the reinforced PET is immersed in a solder bath of 250 ° C for 10 s, and it hardly deforms or discolors, and is particularly suitable for preparing electronic and electrical parts for soldering.

3. The bending strength is 200MPa, the elastic modulus is up to 4000MPa, the creep resistance and fatigue resistance are also good, the surface hardness is high, and the mechanical properties are similar to those of thermosetting plastics;

4. Since the ethylene glycol used in the production of PET is almost half the price of the butanediol used in the production of PBT, PET resin and reinforced PET are the lowest in engineering plastics and have a high cost performance.

use:

PET is mainly used for fibers and a small amount for films and engineering plastics. PET fiber is mainly used in the textile industry. PET film is mainly used for electrical insulation materials, such as capacitors, cable insulation, printed circuit wiring substrates, electrode slot insulation and so on. Another area of ​​application for PET films is film and base tape, such as film, X-ray film, audio tape, computer tape, and the like. PET film is also used in vacuum metallization to form metallized films, such as gold and silver wire, microcapacitor film. Another use for PET is in blow molded articles for polyester stretch bottles for packaging.

Application of packaging bottles: Its application has been developed from the initial carbonated beverages to the current beer bottles, edible oil bottles, condiment bottles, pharmaceutical bottles, cosmetic bottles, etc.

Glass fiber reinforced PET is used in the electrical, electronic and automotive industries for a variety of coil bobbins, transformers, televisions, recorder parts and housings, automotive lamp holders, lampshades, incandescent lamp holders, relays, selenium rectifiers, etc. The current consumption ratio of PET engineering plastics is 26% for electrical appliances, 22% for automobiles, 19% for machinery, 10% for appliances, 10% for consumer goods, and 13% for others. At present, the total consumption of PET engineering plastics is still small, accounting for only 1.6% of the total PET.

The introduction of pet plastics and the use of pet plastics are introduced here. I want to know more friends can go to the website to learn more.

LED Tunnel Lights

LED Tunnel Lights are revolutionizing the way we light up tunnels and other infrastructural landmarks. With their high efficiency and long-lasting durability, LED Tunnel Lights have become a popular lighting option for many infrastructure projects around the world. They provide clear and bright lighting, improving safety and visibility for drivers and pedestrians alike. LED Tunnel Lights come in different variations, including LED Tunnel Mirror and LED Light Tunnel, each designed to provide optimal lighting solutions for tunnels of various sizes and shapes. In this article, we will explore the benefits of LED Tunnel Lights and why they are the preferred choice for tunnel lighting.

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