Novel bamboo fiber/polypropylene composite material and method for preparing same

Abstract

The invention discloses a novel bamboo fiber / polypropylene composite material and a method for preparing the novel bamboo fiber / polypropylene composite material. The novel bamboo fiber / polypropylene composite material is prepared by treating the surface of bamboo fiber, adding a graft, an antioxidant, a lubricant and a molecular weight regulator into homopolymerized polypropylene as a substrate, and fully mixing according to proportion. The surface of the bamboo fiber is treated, thus the compatibility of the bamboo fiber and the polypropylene is improved, and the novel bamboo fiber / polypropylene composite material has excellent mechanical properties. In addition, the plasticizing properties of the polypropylene is improved, the melt viscosity is reduced, the flowability is improved, the compatibility and dispersibility of components of a system are effectively improved, and the interfacial adhesion of the material system is improved. Moreover, the aging resistance and the processing performance of the product are also improved, the polypropylene has thermal stability, and the rigidity of the polypropylene is greatly enhanced. Due to the addition of the lubricant and the molecular weight regulator, the flowability and the flow rate of the novel bamboo fiber / polypropylene composite material are improved. The novel bamboo fiber / polypropylene composite material is suitable for the process for extruding plastics into sheets, plates and pipes and also suitable for the process for injecting and molding small house appliance shells and bases.

Description

technical field [0001] The invention relates to the field of polypropylene materials, in particular to a novel bamboo fiber / polypropylene composite material and a preparation method thereof. Background technique [0002] Polypropylene is a large category of general-purpose materials. Due to its large shrinkage rate during thermal processing, aging due to the influence of light, heat, oxygen and climate during processing and use, and poor cold resistance, its use is limited. Bamboo fiber has unique antibacterial, deodorant properties and excellent coloring, wear resistance, resilience and electrical insulation, and has the advantages of easy processing and low cost. Wood-plastic composite material is a new type of composite material that has been booming at home and abroad in recent years. It refers to the use of polyethylene, polypropylene and polyvinyl chloride instead of the usual resin adhesive, and more than 50% of wood powder, rice husk, straw, etc. Waste plant fibers ...

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Problems solved by technology

[0003] In the prior art, there is a composite material that uses bamboo fiber and additives to modify polypropylene. The invention patent 201010217542.6 (publication number CN101880423A, published on November 10, 2010) was applied by East China University of Science and Technology on June 30, 2010. Japan) disclosed a bamboo fiber / polypropylene composite material and its preparation method. This patent mainly highlights the use of bamboo fiber to prepare composite materials. However, since bamboo fiber is a hydrophilic substance and polypropylene is a hydrophobic polymer, it is very difficult to overcome its poor solubility after mixing, which also determines the overall performance of bamboo fiber / polypropylene composites.

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