One-time reaction extrusion forming production line for acrylic plates

Abstract

The invention relates to a one-time reaction extrusion forming production line for acrylic plates. The one-time reaction extrusion forming production line comprises a reaction still with an MMA feed pipe. The lower portion of the reaction still is connected with an initiator adder and multiple tubular reactors in series through a discharge valve and then connected with an inlet of a screw devolatilization device, an exhaust port of the screw devolatilization device is connected to the upper portion of the reaction still through a condenser, an extrusion port of the screw devolatilization device is connected with a cylindrical inlet in one end of a homogenizing and feeding barrel, the middle of the homogenizing and feeding barrel is of a structure stretching from the cylindrical inlet in one end to a horizontal square long-strip-shaped outlet in the other end in a smooth transition manner, and the horizontal square long-strip-shaped outlet in the other end of the homogenizing and feeding barrel is connected with a plate forming device. By means of the production line, the beneficial effects that a raw material one-time full polymerization reaction is achieved, the plates of variouslength specifications are stably produced through extrusion forming, no volatile gas pollution exists, the forming quality is good, the production efficiency is high, and the cost is low are achieved.

Description

technical field [0001] The invention relates to an acrylic production line, in particular to a one-time reaction extrusion molding production line for acrylic sheets. Background technique [0002] The existing acrylic sheet production is to firstly use raw materials to polymerize particles, and mix all the raw materials in the reactor, which is prone to detonation phenomenon, low polymerization rate, polymerization quality cannot be guaranteed, and the volatile gas of the initiator after polymerization cannot be guaranteed. It is effectively collected and processed, which increases the production cost of polymerization; after the particles are prepared, they are re-melted and poured through two-stage screw extrusion, the secondary melting wastes energy consumption, increases the production cycle and cost, and [0003] The extruded material liquid directly falls into the opening of the casting mold. The exposed material liquid has potential pollution hazards such as ash and w...

AI Technical Summary

Problems solved by technology

[0002] The existing acrylic sheet production is to firstly use raw materials to polymerize particles, and mix all the raw materials in the reactor, which is prone to detonation phenomenon, low polymerization rate, polymerization quality cannot be guaranteed, and the volatile gas of the initiator after polymerization cannot be guaranteed. It is effectively collected and processed, which increases the production cost of polymerization; after the particles are prepared, they are re-melted and poured through two-stage screw extrusion, the secondary melting wastes energy consumption, increases the production cycle and cost, and

[0003] The extruded material liquid directly falls into the opening of the casting mold. The exposed material liquid has potential pollution hazards such as ash and water ingress, which affects the quality of the plate forming. The plate with local problems directly leads to the scrapping of the fixed-length production plate, and the production cost is high.

In addition, traditional acrylic sheets can only be made with fixed lengths and fixed molds, and multi-specification sheets need to be equipped with various molds, which further increases the production cost virtually.

Images