Wood plastic starch composite material and preparation method thereof

Abstract

The invention relates to a wood plastic starch composite material and a preparation method thereof. The wood plastic starch composite material is prepared by mixing base materials, an additive aluminium titanium composite coupling agent, glycerol, an antioxidant 1,010 and a lubricant zinc stearate, wherein the base materials comprise 40 to 65 weight percent of recycled corrugated paper fiber, 10 to 40 weight percent of low-density polyvinyl resin and 10 to 30 weight percent of starch; the using amount of the additive aluminium titanium composite coupling agent is 1 to 6 weight percent of the recycled corrugated paper fiber content; the glycerol content is 5 to 15 weight percent of the starch content; the antioxidant 1,010 content is 0.5 to 2 percent of the total weight of the base materials; and the weight of the lubricant zinc stearate is 1 to 4 percent of the total weight of the base materials. The wood plastic starch composite material has high recycled corrugated paper fiber content, low cost, high physical and mechanical strength, high surface finishment, water resistance and chemical corrosion resistance, is susceptible to degradation, and is a new environmentally-friendly wood-plastic product.

Description

Technical field [0001] The invention relates to a wood-plastic starch composite material and a preparation method thereof, in particular to a wood-plastic starch composite material based on recycled corrugated paper fibers, natural corn starch and low-density polyethylene plastics and a preparation method thereof. Background technique [0002] The source of plastics is mainly natural petroleum, and the storage of these energy sources is limited, and plastics are difficult to rapidly degrade under natural conditions and are difficult to recycle, which puts great pressure on the environment and resources. [0003] Wood-plastic composite materials are cheap, excellent in performance, easy to use, can be sawed, planed, and nailed. It not only retains the advantages of wood processing performance, but also overcomes the shortcomings of wood that is not durable and fearful of insects, and can replace outbound goods. Wooden packaging materials and bedding materials can also be used in t...

AI Technical Summary

Problems solved by technology

[0004] However, as one of the wood fibers, the recycled corrugated paper fiber has different surface properties from the resin matrix, and the interface bonding effect is poor when the two are combined, which leads to the reduction of the mechanical properties of the wood-plastic composite material composed of recycled corrugated paper fiber and resin. Affected the popularization and application of this kind of composite material

[0005] 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