Production method and production equipment of fireproof polystyrene board

Abstract

The invention discloses a production method and production equipment of a fireproof polystyrene board. The production method comprises the following steps: pouring or spraying a liquid fire retardant on the upper surface of a polystyrene board, vacuumizing the polystyrene board on the lower surface of the polystyrene board to ensure that the liquid fire retardant flows through pores inside the whole polystyrene board from top to inside under the actions of gravity and a pressure difference so as to wrap the surfaces of polystyrene beads; and then drying to ensure that the fire retardant is cured. The production equipment comprises a conveyor line for conveying the polystyrene board, and a fire retardant container, wherein a fire retardant spreader is arranged above a permeating section of the conveyor line, the fire retardant spreader is communicated with the fire retardant container through a pipeline as well as a control valve and / or pump. The production equipment further comprises a vacuum pump, wherein the vacuum pump is connected with a gas phase outlet of a gas-liquid separator, an inlet of the gas-liquid separator is communicated with a gas collector by virtue of a pipeline, a gas inlet of the gas collector is formed in a position of a conveying surface of the permeating section of the conveyor line and faces upwards; on a curing section of the conveyor line, the conveyor line penetrates through a curing furnace. According to the invention, the production efficiency is high and the product quality is good; the fireproof performance can reach an A2 level.

Description

technical field [0001] The present invention relates to a production method and production equipment of a fireproof polystyrene board, which is an assembly line continuous production method and equipment. The pressure difference and gravity caused by vacuuming are used to force the flame retardant to penetrate into the pores of the polystyrene board, fully Wrap the surface of polystyrene beads to improve the fire performance, which can reach A2 level. Background technique [0002] Polystyrene board, also known as polystyrene foam board, is made of polystyrene beads containing volatile liquid foaming agent. After heating and pre-expanding, it is heated and formed in a mold to form a board with a fine closed-cell structure. The closed-cell is Inside the beads, there are micropores between adjacent beads, and some of the pores, especially the micropores between the beads, are connected to each other until they reach the surface of the polystyrene plate, which is called open por...

AI Technical Summary

Problems solved by technology

Its deficiency of above-mentioned three kinds of methods is: (1) stirring, pressurized infiltration, vacuum infiltration all need to be carried out in a container and need enough residence time, so can only intermittent production can not continuous production, feed, unloading labor intensity is big and Time consuming, low productivity

(2) Due to the small pores in the polystyrene board and the poor fluidity of the flame retardant, pressure-promoting permeation can resist penetration due to the presence of air in the pores of the polystyrene board, and the air in the polystyrene board is also vacuumed to promote permeation. The penetrating agent can only penetrate after the flame retardant overflows, so the penetration efficiency of the flame retardant in the two methods is still low, which not only results in a long time for infiltration treatment, but also inhomogeneous penetration, especially when the surface of the bead in the core of the board is flame retardant The agent wrapping rate is lower, which reduces the fire resistance of the entire board, and it is difficult to guarantee the product qualification rate

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