Preparation method of moisture-proof mildew-resistant medium density fiberboard

Abstract

The invention mainly belongs to the technical field of artificial board processing, and discloses a preparation method of a moisture-proof mildew-resistant medium density fiberboard. The preparation method comprises steps of fiber drying, acid and alkali treatment, high pressure processing, glue applying processing, and hot pressing moulding. The preparation method is simple; the obtained moisture-proof mildew-resistant medium density fiberboard is high in strength and excellent in wear resistance; water absorption capacity is low; moistureproof and mildew resistance are excellent; defect of commercially available medium density fiberboards that water absorption is easily caused is avoided. According to the preparation method, plant raw material is crushed so as to obtain crushed fiber, asulphamic acid solution is added into the crushed fiber, after uniform infiltration, freeze drying is carried out, it is beneficial for increasing of the bonding force between cellulose and lignin, expansion and defomation of density boards caused by water absorption are avoided, and density board structure integrity is maintained.

Description

technical field

[0001] The invention mainly relates to the technical field of wood-based panel processing, in particular to a method for preparing a moisture-proof and mildew-proof medium-density fiberboard. Background technique

[0002] Density board, the full name of density fiberboard, is made of wood fiber or other plant fiber as raw material, prepared by fiber, applied with synthetic resin, and pressed under heat and pressure; according to its density, it can be divided into high-density fiberboard, high-density fiberboard, Medium-density fiberboard and low-density fiberboard; MDF is widely used in domestic furniture, decoration, musical instruments and packaging due to its uniform structure, fine material, stable performance, impact resistance, and easy processing, but MDF is made of crushed fibers. Therefore, the moisture-proof performance of MDF, especially MDF, is poor, and it is prone to mildew, warping and even pulverization after absorbing water, which limits the...