A kind of preparation method of fully flame-retardant blockboard

Abstract

A method for preparing a fully flame-retardant blockboard of the present invention, the preparation method of which is: cutting → placing → vacuum pressurized injection of flame-retardant treatment → taking material → drying → gluing, using 20% ​​to 25% composite polyphosphoric acid solution As a flame retardant, the resulting blockboard has a flame retardant grade of B1, does not contain formaldehyde, and has good effects on smoke suppression and mildew prevention. The inside of the flakes greatly improves the efficiency of immersing the flame retardant. The preparation process involves a placement rack, which not only makes it easier to put the flakes in and out, but also separates the flakes from each other by the placement rack, making the flakes in the vacuum tank. The internal immersion is more sufficient, and the placement rack includes a pop-up device to facilitate the removal of the sheet from the placement rack. The placement rack also includes a scraping device, so that the scraping of the excess solution on the surface of the sheet is realized during the removal process of the sheet, which can be greatly improved. Improve the efficiency of subsequent drying.

Description

technical field [0001] The invention relates to the technical field of decorative boards, in particular to a method for preparing fully flame-retardant blockboards. Background technique [0002] The losses caused by the fire are quite serious. In addition to the construction industry needing to make more effective space planning for fire escape safety, the most important fire prevention countermeasures are the use of fireproof building materials and decoration (decoration) materials. In the selection of materials, the use of flammable materials should be minimized, and indoor construction and decoration (decoration) materials with flame resistance, flame resistance and fire resistance should be used to prevent the rapid expansion of combustion after the fire source is generated, causing disasters. out of hand. [0003] Blockboard, commonly known as core board, is a kind of plywood with a solid wood core, which is widely used to make load-bearing and decorative furniture suc...

AI Technical Summary

Problems solved by technology

Because blockboards are widely used and are flammable, blockboards have been treated with flame retardant in many occasions, that is, flame retardant blockboards, and flame retardant blockboards (flame retardant large core boards) are made of high-quality logs The veneer is the raw material, which is processed by flame-retardant treatment, drying, glue mixing, cold pressing, hot pressing and other production processes. However, the flame-retardant blockboard currently on the market has a low flame-retardant grade and cannot be fully flame-retardant.

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