Wood-plastic composite material made of larch bark and waste plastic and preparation method thereof

Abstract

The invention discloses a wood-plastic composite material made of larch bark and waste plastic and a preparation method thereof, and belongs to the field of wood-plastic composite materials. Larch bark flour replaces wood flour partially or completely to be used as filler, waste plastic is used as a base body, and the wood-plastic composite material is prepared in a two-screw extrusion mode. The wood-plastic manufacturing cost can be reduced, continuous production can be easily achieved, and a way is provided for utilization of larch bark flour. The composite material is prepared from the larch bark flour, the wood flour, the waste plastic, polyethylene-graft-maleic anhydride, paraffin and polyethylene wax. The preparation method comprises the steps that firstly, weighing is performed, and high-speed stirring and mixing are performed; secondly, the materials are poured into a two-screw extrusion machine for pelleting; thirdly, smashing is performed, then the materials are placed in a single-screw extrusion machine, and when the single-screw extrusion machine reaches a set temperature, a single screw rotates at the speed of 10 rpm, and the wood-plastic composite material is extruded. The wood-plastic composite material is used for manufacturing floors, guardrails, baseboards and the like.

Description

technical field [0001] The invention belongs to the field of wood-plastic composite materials, in particular to a wood-plastic composite material using larch bark and waste plastics as raw materials and a preparation method thereof. Background technique [0002] As a material with excellent performance, wood-plastic composites have been developed rapidly. Wood is an important part of wood-plastic composite materials, and the demand for wood is also increasing day by day. my country's forest resources are limited. With the implementation of my country's natural protection project, the supply of wood is decreasing year by year, the price is increasing, and the production cost of wood-plastic production enterprises is also increasing. Therefore, all wood or non-wood processing residues or It is an ideal choice to partially replace wood flour and fill thermoplastic resin to produce wood-plastic composite materials. It not only reduces production costs for enterprises, but also f...

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