Bamboo powder filled biomass-based resin composite material and preparation method thereof

Abstract

The invention discloses a bamboo powder filled biomass-based resin composite material comprising the following components in part by weight: 20-60 parts of bamboo powder, 40-80 parts of biomass-based resin, 0.8-5 parts of resin acceptor, 0.2-0.6 part of antioxidant and 0.1-0.7 part of ultraviolet absorbent. The invention also discloses a preparation method of the composite material. Compared with the prior art, the invention has the advantages that waste bamboo powder is used as raw material, the hydrophilic and oleophobic bamboo powder is coupled with the oleophylic and lyophobic biomass-based resin by the resin acceptor, and thus the compatibility and the cohesional strength of interfaces of the bamboo powder and the biomass-based resin are improved. The composite material can be widely applied to the fields of automobile interior parts, traffic road blocks, food bags, preservative films, disposable tablecloth, disposable lunch boxes, flowerpots, knives and forks, and the like.

Description

technical field [0001] The invention relates to an environment-friendly composite material, in particular to a composite material using bamboo powder and bio-based resin as raw materials, and also relates to a preparation method of the bamboo powder-filled bio-based resin composite material. Background technique [0002] In recent years, composite materials prepared by compounding natural plant fibers such as wood and bamboo with various petroleum-derived plastics such as polypropylene, polyethylene, and polyvinyl chloride have been widely used in automotive interiors, building structures, and decoration. For wood materials, wood fiber and wood powder have been fully researched and applied, and have achieved certain economic and social benefits. However, wood has a long cycle (about 20 to 30 years), and my country is a country that is not rich in wood resources. The reserves are small, and the output cannot meet the needs of the market. develop. In comparison, bamboo is a r...

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Problems solved by technology

There are many such documents, such as: the Chinese invention patent application with the publication number CN101003667A, which discloses a "polylactic acid / natural fiber composite material and its production method", and another example: Chinese invention patent ZL200410060809.X discloses a "Bamboo Fiber Processing Technology" (authorized announcement number is CN1263922C), the natural fiber described in the former does not specify the specific source method, and polylactic acid does not provide molecular weight, left-handed or right-handed structure (hereinafter referred to as L or D, see below for details) figure 1 shown) content and other information, and materials such as bamboo fiber, without pre-treatment (removing pectin, polysaccharide, protein, etc.), will affect the comprehensive performance of composite materials to a large extent; the processing technology described in the latter, It is necessary to cut and crush the finished bamboo and then carry out subsequent processing, which wastes resources and brings certain negative environmental effects

[0004] For a long time, a large amount of bamboo powder waste after bamboo processing has been disposed of by incineration, landfill or discarded, and has not been effectively utilized.

[0005] For this reason, the Chinese invention patent " bamboo fiber, bamboo powder, wood fiber resin-based composite material " (authorization announcement number is CN1284831C) that the patent No. is ZL200410061464. Composite materials of main raw materials, adding adhesives (such as epoxy resin, urea-formaldehyde resin or phenolic resin), curing agent and diluent, pressing and molding under certain temperature and pressure conditions, the finished product has a rough appearance and relatively low material cutability Poor and difficult to press into samples of more complex shapes

[0006] In addition, the research on bamboo fiber reinforced polypropylene composites in the literature (Li Zhenghong, Journal of Fujian Forestry University, 2005, 25(3): 179-201) provides a method for preparing bamboo fiber reinforced polypropylene composites, although the method Using plastic as the matrix and using bamboo powder with a number-average length of 0.33 mm as the filler can improve the shortcomings of difficult extrusion or injection molding due to the large aspect ratio of bamboo powder and poor fluidity when materials are compounded. However, polypropylene is almost The non-degradable characteristics make it difficult to show advantages in today's society that advocates "circular economy and green economy"

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