A kind of thin flame-retardant medium density fiberboard and its preparation method

Abstract

The invention discloses a thin flame-retardant medium-density fiberboard which comprises the following raw materials: a fiber raw material, urea resin accounting for 8-16 weight percent of the fiber raw material, a flame retardant accounting for 8-20 weight percent of the fiber raw material, ammonia chloride accounting for 0.12-0.24 weight percent of the fiber raw material and emulsion paraffin accounting for 0.6-1.2 weight percent of the fiber raw material, wherein the flame retardant comprises a solid flame retardant and a liquid flame retardant. The thin flame-retardant medium-density fiberboard disclosed by the invention adopts the two types of flame retardants, namely the solid flame retardant and the liquid flame retardant, and can solve the problem that the structure is simple due to the addition of the single type of flame retardant, so that the mechanical property is reduced; by the collaborative use of the solid flame retardant and the liquid flame retardant, pores inside the fiberboard can be effectively filled; the liquid flame retardant can form a good connecting link between two solid matters; meanwhile, the liquid flame retardant has a certain thermal plasticity, so that the adverse effect of the flame-retardant on the mechanical properties of the board can be reduced to a certain extent.

Description

technical field [0001] The invention relates to the field of medium density fiberboard processing, in particular to a thin flame-retardant medium density fiberboard and a preparation method thereof. Background technique [0002] Medium density fiberboard (MDF) is a kind of man-made board made of wood or plant fibers through mechanical separation and chemical treatment, adding adhesives and waterproofing agents, etc., and then forming under high temperature and high pressure. Nowadays, MDF (medium density fiberboard) in my country ) industry developed by leaps and bounds. However, since MDF is a combustible material, it is very easy to cause fire, which greatly limits the applicable places and scope of MDF. In the face of the huge losses caused by fire and the threat to personal safety, the development of flame-retardant MDF is very necessary. [0003] At the same time, with the continuous development of various plates in recent years, the market competition for MDF medium a...

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Problems solved by technology

However, these flame retardants, like most flame retardants, will reduce the mechanical properties of the board

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