Preparation method of metal ammonium boron phosphate wood-plastic composite material capable of retarding flame and inhibiting smoke

Abstract

The invention relates to the technical field of wood-plastic composite materials and particularly discloses a preparation method of a metal ammonium boron phosphate wood-plastic composite material capable of retarding flame and inhibiting smoke. The method includes the following steps of firstly, preparing raw materials; secondly, mixing the materials, wherein wood fibers, thermoplastic resin anda thermal stabilizer which are weighed and obtained in step 1 are put into a high-speed blender for blending for 5 min until the temperature is 85 DEG C; thirdly, adding a coupling agent and a compound lubricant in sequence, continuing mixing for 8 min, then discharging the materials to a low-speed blender and conducting cooling until the temperature is 40 DEG C to obtain the blended materials; finally, conducting pelletizing and molding. The method overcomes defects in the prior art; the prepared wood-plastic composite material capable of retarding flame and inhibiting smoke, compared with existing flame-retardant wood-plastic composite materials, has the advantages that the addition amount of agents capable of retarding flame and inhibiting smoke is small, and a porous structure of the material has an excellent adsorption effect on smoke.

Description

technical field [0001] The invention relates to the technical field of wood-plastic composite material manufacturing, in particular to a method for preparing a flame-retardant, smoke-suppressing wood-plastic composite material of ammonium metal borophosphate. Background technique [0002] Wood-plastic composite material is a kind of wood fiber material (WF) in the form of fiber and powder as filling or reinforcing material, with thermoplastic as matrix material, adding various additives through extrusion, hot pressing, molding or injection molding, etc. A new type of composite material made by combining various processing methods. Commonly used thermoplastic substrates include polyethylene (PE), polypropylene (PP), polystyrene (PS) and polyvinyl chloride (PVC). Wood-plastic composite materials without fire-resistant and flame-retardant treatment are easy to burn, and have a large calorific value of combustion. At the same time, wood-plastic composite materials using PS and ...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for preparing metal ammonium borophosphate flame-retardant and smoke-suppressing wood-plastic composite materials, which overcomes the deficiencies of the prior art and improves the flame retardant described in the existing technology of flame-retardant wood-plastic composite materials Adding a large amount will seriously affect the mechanical properties of wood-plastic materials, and the efficiency of flame retardancy and smoke suppression is low.

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