What is PTA? What is its purpose?

2019-09-29 14:06
PTA is called purified terephthalic acid, also known as PTA; 1,4-phthalic acid; p-phthalic acid, p-phthalic acid; terpinet phthalic acid; pure p-phthalic acid; p-phthalic acid; p-phthalic acid; terephthalic acid; terephthalic acid; terephthalic acid.
< span style = "color: rgb (0,0,0); font family: sans serif; font size: 16px; text indent: 32px;" > PTA is one of the important bulk organic raw materials, which is widely used in various aspects of national economy, such as chemical fiber, light industry, electronics, construction, etc. At the same time, the application of PTA is relatively concentrated. More than 90% of PTA in the world is used to produce polyethylene terephthalate (PET). Producing 1 ton of pet requires 0.85-0.86 tons of PTA and 0.33-0.34 tons of MEG (ethylene glycol). Polyester includes fiber chips, polyester fibers, bottle chips and film chips. In the domestic market, 75% of PTA is used to produce polyester fiber; 20% is used to produce bottle grade polyester, mainly used in the packaging of various drinks, especially carbonated drinks; 5% is used for film grade polyester, mainly used in packaging materials, film and tape. It can be seen that the downstream extension products of PTA are mainly polyester fiber.
< span style = "color: rgb (0, 0, 0); font family: sans serif; font size: 16px; text indent: 32px;" > polyester fiber, commonly known as polyester. It belongs to synthetic fiber in chemical fiber. Synthetic fiber manufacturing industry is the largest and more branches of the chemical fiber industry. In addition to polyester, its products also include acrylic, nylon, spandex, etc. In 2005, China’s chemical fiber output was 16.29 million tons, accounting for 37% of the world’s total production of 44 million tons. The output of synthetic fiber accounts for 92% of the total chemical fiber, while polyester fiber accounts for 85% of the total synthetic fiber. Polyester is divided into filament and staple fiber, with filament accounting for 62% and staple fiber accounting for 38%. There are two production methods for filament and staple fiber: one is that PTA and MEG produce chips and melt them with chips and then spray them; the other is that PTA and MEG do not produce chips in the production process, but are directly spun.
Polyester can be used to make special materials such as bulletproof vest, safety belt, tire cord, fishing net, rope, filter cloth and insulation material. But its main use is as a kind of textile raw materials. In domestic textile raw materials, cotton and chemical fiber account for 90% of the total. China’s chemical fiber output ranks first in the world, accounting for 61% of the total fiber processing volume of China’s textile industry in 2005. Polyester fiber accounts for nearly 80% of the total chemical fiber. Therefore, polyester is the main raw material of textile industry. Polyester filament is used by textile enterprises to produce chemical fiber cloth. Polyester staple fiber is usually blended with cotton. Cotton yarn generally accounts for 60% of textile raw materials, while polyester accounts for 30-35%. However, the amount of both will be replaced due to price changes.

< span style = "color: rgb (0,0,0); font family: sans serif; font size: 16px; text indent: 32px;" > in short, the raw material of PTA is Px, and the source is petroleum. PTA used in polyester fiber accounts for 75% of the total, while 78% of chemical fiber is polyester. This is the origin of the statement "PTA & rdquo.