Full-degradable straw starch plastic and preparation system thereof

Abstract

The invention provides a full-degradable straw starch plastic and a preparation system thereof, belongs to the technical field of plastic production and preparation, and solves the problems that the current plastic does not have a degradable function and pollutes the environment. The fully-degradable straw starch plastic is prepared from the following raw materials in parts by weight: 2 to 10 parts of straw, 60 to 70 parts of resin, 3 to 8 parts of polyvinyl alcohol fiber, 30 to 45 parts of corn starch, 4 to 9 parts of calcium powder, 6 to 15 parts of titanium dioxide and 0.5 to 6 parts of vegetable oil, wherein the resin is biodegradable starch resin. The full-degradable straw starch plastic provided by the invention can be naturally degraded in a natural environment, the degradation is more complete, and the pollution to the environment is avoided; meanwhile, the system provided by the invention can integrate two functions of stirring and extruding on one device, so that the space occupied by the device is reduced; and in the feeding process, fixed body raw materials can be crushed again, and large-particle-size and blocky raw materials are prevented from participating in stirring.

Description

technical field [0001] The invention belongs to the technical field of plastic production and preparation, and relates to a plastic and a preparation system thereof, in particular to a fully degradable straw starch plastic and a preparation system thereof. Background technique [0002] Plastic is a polymer compound made of monomer as raw material through addition polymerization or polycondensation reaction. Plastic can freely change its shape and structure by injection molding. The main component of plastic is resin. With the continuous development of petrochemical industry, petroleum resources are decreasing day by day, and the environmental hazards brought by petroleum by-products are increasing day by day. Among them, non-degradable plastics pose the greatest threat to the environment. [0003] The existing plastics often do not have the function of degradability, and the plastics left in the environment cause great harm to the environment, and the environmental protectio...

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Problems solved by technology

[0003] The existing plastics often do not have the function of degradability, and the plastics left in the environment cause great harm to the environment, and the environmental protection is not good. In addition, in the plastics preparation system, the extruder is the main preparation equipment. Before putting into the extruder, in order to make full contact between different solid raw materials and facilitate the fusion of raw materials, it is necessary to stir the raw materials, but the stirring equipment is often set up separately, which will inevitably increase the space occupied by the entire system. Solid raw materials are crushed into powder or granules. When entering the extruder, there will often be some large particle raw materials that are not completely crushed or powdery raw materials that are agglomerated due to humidity, which will inevitably affect the mixing effect between raw materials.

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