Degradable injection grade bamboo-plastic composite material and preparation method thereof

Abstract

The invention discloses a degradable injection grade bamboo-plastic composite material, which comprises the following components in part by weight: 35 to 45 parts of bamboo powder, 50 to 70 parts of thermoplastic plastic, 1 to 5 parts of coupling agent and 1 to 5 parts of lubricant. The thermoplastic plastic is PE and PP; the lubricant is stearic acid; and the coupling agent is maleic anhydride grafted PE, PP, silane or titanium ester. The preparation method comprises the following steps of: crushing plastic particles into particles with the diameter of between 0.1 and 0.7 centimeters and crushing wood fiber to 40 to 120 meshes; sequentially adding the plastic, wood powder, the lubricant, the coupling agent and the like into a high speed mixer to obtain a premix; and pelletizing the premix by a double-screw extruder and controlling temperature within a certain range to obtain injection grade bamboo-plastic particles. The invention provides the degradable injection grade bamboo-plastic composite material which has high bamboo powder content, is environment-friendly, and is easy to degrade.

Description

1. Technical field [0001] The invention relates to a degradable bamboo-plastic composite material and its processing technology, in particular to an injection-molded bamboo-plastic composite material (particles) and its processing technology. 2. Background technology [0002] The composite material of plant fiber and thermoplastic resin is a composite material with broad prospects. It has the advantages of both solid wood and plastic: it is protected from ultraviolet rays, fades slowly, and is protected from insect pests and fungi; it is waterproof and corrosion-resistant, does not crack and rot; it is easy to cut, saw, drill, and fix with screws; It has a natural woody feel; it does not contain harmful ingredients and is environmentally friendly; it makes full use of waste resources and reduces the harm of waste to the environment; it is recyclable and is a green product. Therefore, it is widely used in various building facilities and garden landscapes. [0003] But at pr...

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Problems solved by technology

[0004] The problem to be solved by the present invention is the problem that current wood-plastic products are not suitable for injection molding, especially to provide a degradable injection-grade bamboo-plastic composite material and its preparation method and simple and feasible material formula, and to provide an environmentally friendly and easy-to-degrade composite material. , no harmful substances, the ratio of PE or PP grafted by soaking or spraying coupling agent and maleic anhydride in the process has low cost, simple ingredients and stable performance