A thermoplastic elastomer granulation system and its application

Abstract

The invention discloses a thermoplastic elastomer granulation system and its application. The system includes underwater pelletizing unit, pelletizing water heat exchanger, centrifugal dehydrator, dryer, dispersion kettle, water tank, cooler and storage tank; underwater pelletizing unit, centrifugal dehydrator, dryer, dispersion kettle and storage tank The material tanks are connected sequentially; the granulation water heat exchanger is respectively connected with the underwater granulation unit and the centrifugal dehydrator; , the cooler, the temperature control layer of the dispersing kettle, the water tank and the temperature control layer of the centrifugal dehydrator are connected together through pipelines in turn to form a loop. The invention can effectively reduce the possibility of producing thermoplastic elastomer cohesive colloids, and improve the product yield and production efficiency. Therefore, the system is suitable for application in the pelletizing of elastomeric polymers.

Description

technical field [0001] The invention relates to a granulation equipment, in particular to a thermoplastic elastomer granulation system and its application. Background technique [0002] After extrusion molding, thermoplastic elastomers are easy to stick together due to their low hardness, so they cannot be granulated by strands, so the underwater granulation process is generally used. Underwater pelletizing is a new type of pelletizing method in which the melt is in contact with cooling water and pelletized directly when extruded from the die surface. Melt pelletizing has obvious advantages over solid pelletizing. The particle shape of underwater pelletizing is approximately spherical or ellipsoidal, and the particle surface is smooth and uniform. [0003] In the traditional technology, after thermoplastic elastic granulation, the particles are directly shaken off and then packed. In order to dry out the water as much as possible, dehydration is often achieved by prolonging...

AI Technical Summary

Problems solved by technology

[0003] In the traditional technology, after thermoplastic elastic granulation, the particles are directly shaken off and then packed. In order to dry out the water as much as possible, dehydration is often achieved by prolonging the centrifuge time or increasing the speed of the centrifuge, which affects production efficiency and the life of the centrifuge.

Moreover, because thermoplastic elastic is easy to stick, dehydration is more difficult than hard plastic, so the requirements for centrifuges are higher. Generally speaking, domestic centrifuges cannot meet the demand

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