Solid phase polycondensation

Intermittent solid phase polycondensation device

1. Output: 100T~10000T/Y

2. Vacuum drying

3. Uniform crystallinity

4. Easy to operate

Solid-phase polycondensation is an effective way to increase the intrinsic viscosity of polyester, which is suitable for the production of polyester bottles and industrial silk.

Crystallization is an essential step before the solid phase polycondensation reaction.The polyester slices are uniformly heated in the crystallization reactor to reduce the moisture content in the slices and improve their crystallinity to ensure the quality of the finished slices.

Subsequently, the polyester slice enters the condensation reactor, and after a period of reaction, the polymer molecules combine with each other to form new molecular chains, and the molecular weight can be increased, thus improving the intrinsic viscosity and physical properties of the polyester.At the same time, solid phase polycondensation can also remove impurities contained in polyester chips.The longer the chain, the higher the molecular weight, the higher the intrinsic viscosity of the polymer will be.

The intermittent solid phase viscosifying device includes:

A) Rotating drum system: used for section crystallization, drying and viscosity increasing reaction.

B) Vacuum system: make the inner drum travel vacuum and remove the by-products of reflection.

C) Heat conduction oil circulation system: used for heating and cooling materials.