Preparation process for polypropylene composite film based on bio-based wheat straw

Abstract

The invention relates to a preparation process for a polypropylene composite film based on a bio-based wheat straw. The preparation process comprises the following steps of conveying crushed straw particles to a neutralizing and cleaning tank; neutralizing and cleaning the straw particles in the neutralizing and cleaning tank; making the straw particles stand in a hydrothermal reactor at constanttemperature; drying the straw particles through a vacuum drying box; mixing the straw particles with raw materials through a mixing machine; and outputting the materials to a film making machine through a screw extruder for film production. According to the preparation process, a central control unit is connected with a corresponding component, a matrix Ri is established according to the comparison result of the straw mass Ma and each value in the Ma0 matrix so as to control each device to select a corresponding operation parameter, and a matrix Sj is established according to the comparison result of the straw particle mass Mb and each value in the Mb0 matrix so as to select the amount of the corresponding raw materials and a preparation process. High-quality composite materials can be rapidly prepared while it is ensured that the content of straw particles is within a preset range, and the preparation efficiency of the process is improved.

Description

technical field [0001] The invention relates to the technical field of bio-environmental protection composite materials, in particular to a preparation process of a bio-based wheat straw polypropylene composite film. Background technique [0002] Polypropylene material is widely used in various aspects such as industry, agriculture, and life because of its advantages such as low density, high mechanical strength, good chemical resistance, low price, and easy molding. But at the same time, the chemical inertness and surface energy of polypropylene materials are very low, and the plastic products made of them are difficult to print on the surface, and the large-scale application of polypropylene materials not only brings great convenience to human production and life, but also Serious white pollution has been caused to the existing environment, and it is an urgent technical problem to be solved by those skilled in the art to find a degradable polypropylene composite material w...

AI Technical Summary

Problems solved by technology

[0007] Therefore, the present invention provides a preparation process based on bio-based wheat straw polypropylene composite film to overcome the problem of low production efficiency caused by the inability to select corresponding raw materials and production processes according to the straw quality in the prior art

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