Wide application of the hottest plastic polyester

2022-08-08
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Wide application of thermoplastic polyester in packaging industry

thermoplastic polyester (TPT) needs to be understood urgently. People may know pet, PBT and PETG, but how much do they know about the compound annual growth rate of PCT, pctg and PCTA reaching 30% from 2018 to 2020 and PTT? What are they made of? How about comparison? You can find the answer in this article

ask the molding or extrusion manufacturers of engineering resins to list the thermoplastic polyester. Most of the answers may be pet, PBT or PETG. A few people know that there are at least three materials in the phthalic acid polyester family that are in commercial use, and the other one will be on the market soon

pct polyester is between PBT and LCP in terms of short-term heat resistance, and is increasingly used in electronic products

thermoplastic polyester has not been paid attention to partly because it includes seven homopolymers and copolyesters, all of which use esters and terephthalic acid (TPA) as their structural compounds. Different varieties have good chemical resistance, electronic properties, dimensional stability and stiffness toughness balance (during hardening). It is generally transparent, but it shows low heat and surface defects to varying degrees, which may cause drying problems due to moisture absorption

the second reason for neglect is that some suppliers deliberately avoid the clear definition of polyester and polyesters due to their market policies over the years. In addition, in different end markets, the same resin provided by different suppliers may use completely different trade names

the third reason is based on the recent changes in polymer supply system. In fact, in the past year, each supplier gave up or increased a certain product series, or adjusted the polymer production structure. Although the density of CFRP is far less than that of the metal placed in the test piece, these actions are designed to create a more solid and long-term foundation for the future polyester supply, but the immediate effect shows that the sellers and products are highly blurred

of course, polyester has its own characteristics, that is, they accept the efficiency of glass and material hardening, pigments and other polymers, because 90% of the polymers are mixed with fillers, curing agents and other additives. In 2010, the sales volume of China's concrete machinery industry exceeded 90billion yuan. The different properties of the base resin make the polymer different. However, the synthesis can make it have new development in flame retardant, food safety (such as PBT conforming to FDA) and alloy proliferation (polyester and another polyester, or the combination with polycarbonate, ABS and ASA)

three factors make the market the best time for thermoplastic polyester to split the heavy fog and see the clouds. First, several major changes in supply; The second is the market efforts made by resin suppliers to replace other resin products with polyester; Last but not least, a number of new development technologies have been launched. Suppliers have adopted new resins and alloys to cope with severe competition, including hydrolysis resistant PBT grade, which can improve the performance of electronic products (such as plug-in components). In addition, the new technology can also improve the exterior decoration of PBT. Engineering grade PET, PTT and new polymers have also been introduced

in the personal care and cosmetics packaging industries, copolyesters are replacing thick wall glass bottles

(to be continued)

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