Epoxy paint reaction kettle

Abstract

The invention discloses an epoxy paint reaction kettle. The epoxy paint reaction kettle comprises a barrel body, a stirring shaft, a charging hole and a discharging hole, wherein the stirring shaft is arranged in the barrel body; the charging hole is formed in the top of the barrel body; the discharging hole is formed in the bottom of the barrel body; a stirring paddle arranged along the direction of an auger is arranged on the stirring shaft; two connecting rods are symmetrically arranged at the middle part of the stirring shaft; tail ends of the connecting rods are provided with scraping plates matched with the inner wall of the barrel body; the tail end of the stirring shaft in the barrel body is provided with a beam; and a side stirring device matched with the bottom of the barrel body is connected to the beam. The epoxy paint reaction kettle disclosed by the invention can stir paint more uniformly, so that the product is uniform in performance and cannot be coked; eddy effect is brought during stirring, so that material turning and mixing effect is further improved.

Description

technical field [0001] The invention relates to the field of paint processing, in particular to an epoxy paint reaction kettle. Background technique [0002] Generally speaking, the two-component epoxy coatings containing more epoxy groups in the composition are collectively referred to as epoxy paints. The main variety of epoxy paint is two-component or three-component epoxy paint, which is composed of epoxy resin and curing agent. They are mixed in a certain proportion, and then prepared by processes such as hot extrusion, crushing and sieving. They are stable in storage at room temperature. After electrostatic spraying, friction spraying (thermosetting method) or fluidized bed dipping (thermoplastic method), they are heated and baked to melt and solidify to form a flat and bright permanent coating film to achieve decorative properties. For the purpose of anti-corrosion, the epoxy resin used in large quantities, the production process generally adopts a three-pot reactio...

AI Technical Summary

Problems solved by technology

They are stable in storage at room temperature. After electrostatic spraying, friction spraying (thermosetting method) or fluidized bed dipping (thermoplastic method), they are heated and baked to melt and solidify to form a flat and bright permanent coating film to achieve decorative properties. For the purpose of anti-corrosion, the epoxy resin used in large quantities, the production process generally adopts a three-pot reaction system (beating kettle, esterification / ester exchange kettle, polycondensation kettle); the stirrer of the reaction kettle is a single inclined paddle or anchor Type paddle, the stirring rate of each stage is fixed, this design is not suitable for the stirring requirements of epoxy resin single-pot production, the stirring method and rotating speed are fixed, the stirring effect is not very ideal, and as the reaction progresses, the molecular weight continues to increase, making The viscosity of the material continues to increase, so that the material at the edge of the reactor cannot be stirred, resulting in uneven product performance and even coking

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