Wood plastic composite and preparation process thereof

Abstract

The present invention discloses a wood plastic composite and a preparation process thereof. The wood plastic composite is prepared by mixing wood powder and high-density polyethylene resin, which serve as a base stock, with an additive, an aluminum-titanium composite coupling agent, an antioxidant 1010 and zinc stearate serving as a lubricant, wherein the content of the wood powder in the base stock is 50 to 90 weight percent; the content of the high-density polyethylene resin in the base stock is 10 to 50 weight percent; the used amount of the aluminum-titanium composite coupling agent is 1 to 6 weight percent based on the wood powder content; the used amount of the antioxidant 1010 is 0.2 to 2 weight percent based on the total weight of the base stock including the wood powder and the high-density polyethylene resin; and the used amount of the zinc stearate serving as the lubricant is 1 to 5 percent based on the total weight of the base stock including the wood powder and the high-density polyethylene resin. The wood plastic composite has high wood powder content, low manufacturing cost, high physical mechanical strength and high surface finishment, is water resistant, chemical corrosion resistant and easy to degrade and is a green, environmentally-friendly novel wood and plastic substitute.

Description

technical field [0001] The invention relates to a wood-plastic composite material and a preparation process thereof, in particular to a wood-plastic composite material made of natural wood powder and thermoplastics as base materials and adding related modification additives and a preparation process thereof. Background technique [0002] Wood-plastic composite material has excellent performance and is easy to use. It can be sawed, planed, and nailed. It not only retains the advantages of wood in processing performance, but also overcomes the shortcomings of wood that is not durable and afraid of insects. It can replace wooden packaging for outbound goods. Materials and bedding materials can also be used for the construction of corrosion-resistant sheds in the chemical industry, the manufacture of decorative panels, floors, passages, benches and casting model machine covers, water pump casings, electrical structural parts, etc. [0003] On the other hand, due to the poor comp...

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Problems solved by technology

[0003] On the other hand, due to the poor compatibility between wood fiber and resin matrix in wood-plastic composite materials and the characteristics of the fiber itself, the amount of fiber added is severely limited. In the current industrial production of wood-plastic composite materials, plant The content of fiber is mostly 10-25%. This content of plant fiber is not very meaningful for reducing the cost of wood-plastic composite materials, and the cost of expensive modified additives makes the market price of this composite material quite high. It is even higher than general-purpose plastics and solid wood, which restricts the development and application of wood-plastic composite materials