Flame retardant decorative sheet, manufacturing method of flame retardant decorative sheet and flame retardant material comprising flame retardant decorative sheet

Abstract

The invention provides a flame retardant decorative sheet and a manufacturing method of the flame retardant decorative sheet. The flame retardant decorative sheet comprises a board material assembly and a flame retardant adhesive layer which is at least attached to the surface of at least one side in the thickness direction of the board material assembly and formed by adhesive containing flame retardant adhesive. The board material assembly at least comprises a layer of wooden single board. The flame retardant adhesive contains water-soluble amino resin, dehydration catalyst, charring agent and assistant agent and contains water or not. The dehydration catalyst is one or more of ammonium polyphosphate, melamine orthophosphate and melamine pyrophosphate. The polymerization degree of the ammonium polyphosphate is 20 or above. The invention further provides a flame retardant material. The bonding performance of the flame retardant decorative sheet made by the adoption of the manufacturingmethod can meet the national standard requirement, and the flame retardant decorative sheet gives the flame retardant property to a base material and does not influence the mechanical property of thebase material. The formaldehyde emission is at the E1 grade or above, and the flame retardant decorative sheet is safe and environmentally friendly. Meanwhile, the nature texture of the wood is kept,and the decorative effect is good.

Description

technical field [0001] The invention relates to a flame-retardant decorative board, a preparation method thereof and a flame-retardant material comprising the flame-resistant decorative board. Background technique [0002] At present, there are many researches on the fire-retardant treatment of wood and wood materials, but the existing methods for fire-retardant treatment of wood materials have various defects. For example, CN1911613A discloses a wood flame-retardant treatment process, which is to put wood into a sealed container, vacuum-treat the container including wood, and then input the fire-retardant liquid into the container in a vacuum state through a high-pressure pump. In the process, after the fire retardant solution reaches saturation in the wood, the wood is taken out and dried; the fire retardant solution contains ammonium sulfate, diammonium hydrogen phosphate, boric acid and borax. This method is a method of impregnating flame retardant under pressure. There...

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Problems solved by technology

This method is a method of impregnating flame retardant under pressure, and there are certain problems in this wood treatment method: (1) The flame retardant must be soluble in water and impregnated into the wood in liquid form, so the penetration of tree species (2) Most of the inorganic flame retardants cannot form chemical bonds with wood, and are prone to surface precipitation, which affects subsequent secondary processing; (3) The above-mentioned flame retardants have adverse effects on the physical and mechanical properties of wood, such as MOR (static bending strength), MOE (modulus of elasticity) decrease, and brittleness increase; (4) To achieve a higher flame retardant level, it is necessary to increase the (5) The treated wood must be dried for the second time, which is easy to cause secondary cracking and deformation of the wood, and increase the loss

This flame retardant treatment method has brought many adverse effects, such as complex treatment process, reducing the physical and mechanical properties of the material, adversely affecting the curing performance of the adhesive, affecting the subsequent secondary processing performance, and increasing energy consumption due to repeated drying, etc.