Halogen-free flame retardant wood-plastic composite material made by expansive type fire retardant and preparation method thereof

Abstract

The invention relates to a halogen-free flame retardant wood-plastic composite material made by expansive type fire retardant and a preparation method thereof. The invention relates to a halogen-free flame retardant wood-plastic composite material and a preparation method thereof. The composite material comprises the following components according to parts by weight: 20-30 parts of polyethylene resin, 50-70 parts of wood flour, 20-30 parts of a compound expansive type halogen-free flame retardant agent, 1-3 parts of a compatibilizer PE-g-MAH, 0.5-1 part of an antioxygen 1010, 0.5-1 part of an antioxygen 1680, 2-5 parts of a lubricating agent and 0.5-1 part of an uvioresistant agent. The preparation method comprises the following steps: mixing the polyethylene resin, the wood flour, grafts and other processing accessory ingredients and the like through a high mixing machine, extruding comminution granulation through a double screw extruder, extruding and molding through a cone double screw extruder and the like, and obtaining the halogen-free flame retardant wood-plastic composite material. The method provided by the invention has better flame retardant performances that the product has shallow tincture, the wood copying effect is good, the product is automatically powered off after the fire is extinguished, the smoke generated is less, and the product achieves V-0 flame retardant grade in a perpendicular combustion test.

Description

technical field [0001] The invention relates to a halogen-free flame-retardant wood-plastic composite material and a preparation method thereof, in particular to a halogen-free flame-retardant wood-plastic composite material prepared by utilizing an intumescent flame retardant and a preparation method thereof. Background technique [0002] Wood-plastic composite material is a kind of basic material that covers a wide range of products and has a variety of shapes and structures. It fully embodies the advanced concepts of sustainable economic development such as circular economy, resource utilization, health and environmental protection, and conservation and substitution. Most of its products have the function of comprehensive utilization of resources and the resulting protection of the environment, so it has gradually attracted the attention of the society in recent years. The current Chinese government's concept of "circular economy" and "building a conservation-oriented soc...

AI Technical Summary

Problems solved by technology

In addition, due to the high flame-retardant efficiency of red phosphorus, most flame-retardant wood-plastic products are added with red phosphorus. Although it can meet the flame-retardant requirements of composite materials, the color of the product is dyed dark red by red phosphorus, which limits the Its scope of application