PTA is called purified terephthalic acid, nicknamed PTA; 1,4-phthalic acid; terephthalic acid, citric acid; terpine phthalic acid; pure terephthalic acid; terephthalic acid; .
PTA is one of the important bulk organic raw materials, widely used in various aspects of the national economy such as chemical fiber, light industry, electronics, construction, etc. At the same time, the application of PTA is more concentrated, more than 90% of the world's PTA is used for production Ethylene terephthalate (PET, PET). Production of 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 slicing and film slicing. 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 beverages, especially carbonated beverages; Membrane grade polyester, mainly used in packaging materials, film and tape. It can be seen that the downstream extension of PTA is mainly polyester fiber.
Polyester fiber, commonly known as polyester. It is a synthetic fiber in chemical fiber. Synthetic fiber manufacturing is the largest and most branched sub-sector in the chemical fiber industry. In addition to polyester, its products include acrylic, nylon, spandex, etc. 2005 China Chemical Fiber The output is 16.29 million tons, accounting for 37% of the world's total output of 44 million tons. Synthetic fiber production accounts for 92% of total chemical fiber, while polyester fiber accounts for 85% of synthetic fiber. Polyester is divided into filament and staple fiber, and filament is about 62%. %, short fiber accounts for about 38%. There are two production methods for filament and staple fiber: First, PTA and MEG produce slicing, which is formed by slicing after slicing; one is that PTA and MEG are not in the production process. Production of slices, but directly spun.
Polyester can be used to make special materials such as body armor, safety belts, tire cords, fishing nets, ropes, filter cloths and insulation materials, etc. But its main use is as a kind of textile raw material. Domestic textile raw materials, cotton and chemical fiber accounted for 90% of the total. China's chemical fiber production ranks first in the world. In 2005, chemical fiber production accounted for 61% of China's textile industry's total fiber processing capacity of 26.9 million tons. Polyester in chemical fiber accounts for nearly 80% of total chemical fiber. Therefore, polyester It is the main raw material of the textile industry. Polyester filament yarn is used by textile enterprises to produce chemical fiber cloth. Polyester staple fiber is generally blended with cotton. Cotton yarn generally accounts for 60% of textile raw materials, and polyester accounts for 30-35%. However, the price of both is due to price. Change instead.
Simply put, the raw material of PTA is PX, the source is petroleum. PTA for polyester accounts for 75% of the total, and 78% of chemical fiber is polyester. This is the origin of the term "chemical fiber raw material PTA".