Application of Melt Metering Pump in PGA Industry

Green and sustainable development is a global trend. As early as 2020, the country proposed the goal of achieving carbon neutrality by 2060, and in recent years, it has gradually risen from a "plastic restriction order" to a "plastic prohibition order". It can be foreseen that degradable materials have very high application value and development space in the future.

melt metering pump in PGA industry

Polyglycolic acid (PGA) is a new type of green biodegradable material that can be completely harmless degraded in natural environments such as soil and seawater in just six months to a year. It has been certified as a safe biodegradable plastic material in the United States, the European Union, and Japan. At the same time, it also has characteristics such as fast degradation rate, high barrier performance, strong mechanical properties, and good biocompatibility. Currently, it is widely used in various fields such as medical surgical sutures, drug controlled release carriers, fracture fixation materials, and agricultural mulch.

polymer melt pump

The traditional preparation route of polyglycolic acid (PGA) mainly involves direct dehydration and condensation of glycolic acid or the preparation of ethylene glycol from glycolic acid, followed by ring opening polymerization of ethylene glycol. With the rapid development of China's coal to ethylene glycol industry, the large-scale production of polyglycolic acid (PGA) using dimethyl oxalate (DMO), an intermediate product in the preparation of ethylene glycol, as a raw material, has become a feasible process route. The industrialization of this process route will greatly reduce the production cost of PGA and have a wide market prospect.

melt pump in extruder

The melt metering pump plays a "heart" role in the production process of polyZ alkyd (PGA), mainly used for the transportation of oligomers, catalysts, and other melts, as well as the transportation and pressurization of materials during the final granulation process. Polyglycolic acid (PGA) ）During the production process, oligomers and intermediate products have certain corrosiveness, and the material properties are relatively special, so there are special requirements for the material and structure of gear pumps. In addition, to ensure the stable operation of the system, the gear pump needs to monitor and control temperature, speed, etc. to meet the requirements for flow and control accuracy in the production process.

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