Low-cost low-odor degradable natural-fiber-reinforced polycarbonate reclaimed material capable of achieving light weight and preparation method thereof

Abstract

The invention discloses a low-cost low-odor degradable natural-fiber-reinforced polycarbonate reclaimed material capable of achieving light weight and a preparation method thereof. The reclaimed material is prepared from the following raw materials in percentage by weight: 34-99 wt% of a polycarbonate reclaimed material, 1-50 wt% of natural fibers, 0.1-5 wt% of foaming agent masterbatch, and 0.01-1 wt% of an antioxidant. The polycarbonate reclaimed material, the antioxidant and the like are added from a main feeding port of a double-screw extruder, and the natural fibers and the foaming agentmasterbatch are added from a melting section in the middle of a screw to obtain the natural-fiber-reinforced polycarbonate reclaimed material. The natural-fiber-reinforced polycarbonate composite material is prepared into a low-cost, low-odor and degradable natural-fiber-reinforced polycarbonate product under a secondary mold opening condition or an under-injection condition by adopting an injection molding method. The disclosed material is endowed with the characteristics of low density, low odor, high performance and degradability while the problem of resource waste is solved, and a new wayis provided for lightweight and environment-friendly development of automobiles.

Description

technical field [0001] The invention relates to the technical field of recycling polycarbonate recycled materials, and specifically discloses a low-cost, low-odor natural fiber-reinforced degradable polycarbonate recycled material that can realize light weight and a preparation method thereof. The characteristic of this modified material is that while solving the problem of waste of resources, it endows the material with low density, low odor, high performance and degradable characteristics, providing a new way for the development of lightweight and environmentally friendly automobiles. Background technique [0002] Polycarbonate is a kind of plastic with excellent comprehensive properties. The benzene ring on the molecular main chain makes it have good mechanical properties, rigidity and heat resistance, and the ether bond makes the molecular chain have a certain degree of flexibility. It is a kind of rigid and tough engineering plastic, which is widely used in electronics,...

AI Technical Summary

Problems solved by technology

[0004] (1) Incineration or landfill method, incineration will produce a large amount of harmful gas, which will cause environmental pollution, while landfill polycarbonate is difficult to degrade and cause soil pollution. At present, this method has been gradually eliminated;

[0005] (2) Simple granulation of recycled materials, but in the secondary processing process, the polycarbonate in the glass fiber reinforced polycarbonate will be decomposed by heat, and the glass fiber will be cut and thinned, resulting in a serious decline in performance. Although it solves the environmental problem Pollution problems, but cannot fully develop its economic value, and cause serious waste of resources

The adsorption type is mainly physical adsorption, and the adsorption effect is limited due to the influence of the specific surface area of ​​the adsorbent.

[0008] In short, the effect of adding additives to reduce the odor of polycarbonate recycled materials is limited, and any improvement on polycarbonate degradation, etc., is costly, and it is impossible to achieve lightweight polycarbonate

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