Preparation method of flame-retardant and antistatic wood-plastic composite material

Abstract

The invention discloses a flame-retardant and antistatic wood-plastic composite material and a preparation method thereof and relates to a wood-plastic composite material and a preparation method thereof. The invention aims at solving the problems of relatively poor flame retardance and relatively high cost of the existing antistatic wood-plastic composite material. The wood-plastic composite material is prepared from the following components in parts by weight: a lignocellulosic material, thermoplastic, a lubricant, an antistatic agent, a flame retardant, a coupling agent and an inorganic filler. The method comprises the following steps: 1) performing hot mixing on the lignocellulosic material, the thermoplastic and the lubricant to obtain a hot-mixed material; 2) putting the hot-mixed material into a cold mixing machine for cold mixing, and adding the weighed antistatic agent, the flame retardant, the coupling agent and the inorganic filler into the cold mixing machine for re-mixing when the temperature is lowered to 40-60 DEG C to obtain a premix; 3) putting the premix into a twin-screw extruder to perform melting, mixing and granulation; and 4) performing extrusion molding or thermoforming to prepare the flame-retardant and antistatic wood-plastic composite material. The flame-retardant and antistatic wood-plastic composite material is used in the fields of indoor buildings, decorations, decoration materials and the like.

Description

technical field [0001] The invention relates to a wood-plastic composite material and a preparation method thereof. Background technique [0002] Wood-plastic composite material is a new type of environmentally friendly composite material prepared by processing a certain proportion of wood fiber material, thermoplastic polymer resin and various additives through melt extrusion, injection molding or hot pressing compounding. It has the dual advantages of both wood and plastic. It not only has the wood-like appearance of wood but also has the advantages of water resistance, corrosion resistance and insect resistance of thermoplastics. Moreover, its dimensional stability is better than that of wood, and its hardness and modulus are higher than that of wood. Thermoplastics have a flexible production process and can be reprocessed and recycled. They have outstanding environmental protection and unique decorative effects. At the same time, they can effectively alleviate the shorta...

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Problems solved by technology

[0006] The present invention aims to solve the problem of poor flame retardancy and high cost of existing antistatic wood-plastic composite materials, and provides a flame-retardant and antistatic wood-plastic composite material and a preparation method thereof

[0007] In view of the fact that wood-plastic composite materials tend to accumulate a large amount of static charge during use indoors or in public places, causing dangers such as dust collection and discharge, and at the same time considering that they are easy to burn and have a relatively high fire hazard after burning, by adding a flame retardant and antistatic agent to obtain wood-plastic composite materials with dual functions of flame retardancy and antistatic, thereby further expanding the application field of wood-plastic composite materials

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