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What is solid phase viscosification

Solid-phase viscosification is also called solid-phase polycondensation, which is a polycondensation reaction carried out in solid state. The polyester prepolymer with a certain molecular weight is heated below the melting point and above the glass transition temperature (usually 10-40℃ below the melting point), and the small molecule products are taken away by vacuum or inert gas protection, so that the polycondensation reaction continues.The condensation polymerization occurs due to the effective collision between the spherical regions.

Rongsheng solid phase viscosity increasing device can be according to the user's output and variety of characteristics, can adopt a single kettle process, all crystallization and reaction are completed in the drum reactor, save investment, occupy less area, flexible variety replacement.

If the outside crystallization system is selected, the time occupied by the raw material in the drum reactor can be saved and the production output can be increased.

The intermittent solid phase viscosifying device does not need nitrogen protection during the whole process of solid condensation, which is convenient for users and energy saving.

And does not add any chemical solvents and additives, environmental protection significance.

Comparison before and after polycondensation reaction


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