High-strength bamboo-plastic composite material for container bottom plate

Abstract

The invention discloses a high-strength bamboo-plastic composite material for a container bottom plate, and relates to the technical field of artificial boards. The invention discloses a high-strength bamboo-plastic composite material for a container bottom plate. The high-strength bamboo-plastic composite material is prepared from the following raw materials: modified bamboo powder, polyethylene resin, recycled plastic, polyvinyl butyral, a compatilizer, a coupling agent, a lubricant and an anti-aging agent, the preparation method of the modified bamboo powder comprises the following steps: adding sodium alginate into a reaction kettle containing a 10wt% NaOH solution, uniformly mixing at a high temperature, then adding bamboo powder, stirring at 80-85 DEG C for 1 hour, then adjusting the pH value to 5-6 by using dilute acid, adding polyoxyethylene alkylamine and hydrogen-containing silicone oil, and stirring at 50 DEG C for 2 hours, thereby obtaining the modified bamboo powder. The high-strength bamboo-plastic composite material for the container bottom plate provided by the invention has excellent impact resistance and toughness, also has excellent waterproofness, flame retardance, corrosion resistance and aging resistance, improves the utilization rate of bamboo wood, has relatively long service life, reduces the production cost and reduces environmental pollution.

Description

technical field [0001] The invention belongs to the technical field of artificial boards, and in particular relates to a high-strength bamboo-plastic composite material for container bottom boards and a preparation method thereof. Background technique [0002] The container bottom plate is one of the most demanded plates among many structural plates. It not only requires extremely high strength, rigidity and good durability, but also requires special chemical insect-proof treatment, which has high technical difficulty and quality requirements. , the traditional bottom plate is made of a single sawn veneer, and the air-dry density of the plate is required to reach 0.62-0.82g / cm 2 , and with the growing shortage of natural resources and the continuous growth of container usage, countries have begun to seek other materials to replace wood to make container floors. [0003] At present, there are mainly the following types of materials for the bottom plate of the container: one ...

AI Technical Summary

Problems solved by technology

However, the composition of bamboo fiber itself is very complex, containing cellulose, hemicellulose, lignin, pentosan, benzyl alcohol extract, ash, water, etc. Bamboo fiber molecules contain a large number of polar groups such as -OH, making the fiber There are strong hydrogen bonds between and within the macromolecular chains of the prime, coupled with the asymmetry of the overall structure of the fiber, the surface of the bamboo fiber has a strong surface chemical property, resulting in a very strong container floor made of bamboo. Water absorption, making the container very susceptible to moisture and rot, affecting the service life of the container

Moreover, for bamboo-plastic composite materials, the interface wettability and adhesion between the two different polarities of bamboo fibers and plastics are extremely poor, which cannot meet the requirements of high-strength container bottom plates, resulting in the existing bamboo-plastic composite materials. The strength, impact resistance, toughness, etc. are poor, and it is not suitable for application on container floors that require high strength.

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