Continuous production device for special-shaped high-viscosity polymer melt

Abstract

The invention provides a continuous production device for special-shaped high-viscosity polymer melt. The device comprises a special-shaped horizontal reaction kettle, a barrel jacket, two end coversand two stirring shafts, wherein the two end covers are respectively arranged at two ends of the special-shaped horizontal reaction kettle in an end sealing manner, the special-shaped horizontal reaction kettle is fixed on a frame base through a saddle support connected to the bottom of the barrel jacket, heating inner cavities are formed in the two end covers and the barrel jacket, and a heatingmedium inlet and a heating medium outlet are formed in each heating inner cavity; the top of the special-shaped horizontal reaction kettle is provided with a vacuum port and a catalyst inlet, and thebottom of the special-shaped horizontal reaction kettle is also provided with a melt inlet and a melt outlet; the two stirring shafts are provided with a plurality of stirring blades; the stirring blades on the two stirring shafts are arranged in a staggered and mutually-inserted manner; scraping plates are arranged at two sides of ends of the stirring blades. According to the device, the reactionperiod can be shortened, the energy consumption can be reduced, the devolatilization effect can be increased, and the tackifying quality can be improved so as to meet the increasingly increased requirements of the market on the high-viscosity high-end product.

Description

technical field [0001] The invention relates to a high-viscosity high molecular polymer production device, in particular to a special-shaped high-viscosity polymer melt continuous production device. Background technique [0002] Intrinsic viscosity is the most important indicator of polymer products, and the level of viscosity will directly affect the performance and occasions of the material. In the current actual production and life, high-viscosity polymers are mainly used for spinning high-strength yarns, high-strength cords for tires or reinforcing fibers for conveyor belts, and can also be used for spinning strong fibers for sewing threads and blowing PET bottles, etc., and with the continuous expansion of the application field of high-viscosity polymers, the market demand for this product is also growing rapidly. [0003] The existing production methods include solid-phase thickening and liquid-phase thickening. Solid-phase thickening is also called solid-phase polyco...

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Problems solved by technology

[0003] The existing production methods include solid-phase thickening and liquid-phase thickening. Solid-phase thickening is also called solid-phase polycondensation, which is a polycondensation reaction carried out in a solid state. Polyester with a certain molecular weight is prepolymerized The body is heated below its melting point and above the glass transition temperature (usually 10-40°C below the melting point), and the small molecular products are taken away by vacuuming or inert gas protection, so that the polycondensation reaction can continue. According to different processes, it can be divided into continuous type And intermittent, the process characteristics of this thickening method lead to uneven viscosity inside and outside the polyester particles. Although there are many improvement measures for solid phase thickening, these measures lead to longer time periods and higher energy. Consumption, so it is difficult to meet the market's increasing demand for high-viscosity products

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