Bentonite/ starch composite degrading material produced by melt intercalation and preparation method

Abstract

The invention discloses a bentonite / starch composite degrading material produced by melt intercalation and a preparation method. The bentonite / starch composite degrading material is prepared from the following raw materials in parts by weight: 10 to 90 parts of biodegradable polymer material, 10 to 90 parts of starch, 5 to 30 parts of plasticizer, 1 to 5 parts of internal / external lubricant, 1 to 5 parts of heat stabilizer, 0.5 to 2.5 parts of antioxidant, and 1 to 30 parts of bentonite. The preparation method comprises the steps of blending the compound materials; plasticizing; extruding; granulating to obtain the final product. The bentonite / starch composite degrading material produced by melt intercalation and the preparation method has the beneficial effects that (1) the bentonite added can improve the heat resistance and processing fluidity of starch and can be greatly intercalated or filled, so that the production cost is decreased; (2) the starch is easily plasticized through the plasticizer; (3) the starch strength is greatly improved after the plasticizing; (4) the biodegradation is completely done; the characteristics of being small in investment, fast to develop and simple in production method are achieved.

Description

technical field [0001] The invention relates to a bentonite / starch composite degradation material, in particular to a manufacturing method of the bentonite / starch composite degradation material. Background technique [0002] With the improvement of human awareness of the environment, we are constantly committed to the development of new materials that adapt to the environment. At present, a lot of manpower and material resources have been invested at home and abroad to develop new environmentally friendly plastics that can replace petroleum resources. As environmentally friendly plastics, PLC, PCL, PHA, PBS, PBAT, PPC, PVA, TPS, etc. have been successfully developed, and very effective results have been achieved. [0003] Degradable plastics have developed rapidly since their inception, among which starch-based plastics have the most types and quantities, accounting for the vast majority of degradable plastics. Whole starch thermoplastics are plastics that physically or che...

AI Technical Summary

Problems solved by technology

Whole starch thermoplastics are plastics that physically or chemically treat natural starch to make them thermoplastic, have the properties of plastic resins, and can quickly degrade in the environment. They are completely biodegradable materials in the true sense. The advantage is that it has complete biodegradability in various environments. After the starch molecules in the product are degraded or ashed, CO2 gas is formed, which is not toxic to the soil or air; but full-starch thermoplastics consume a lot of starch and waste a lot. Resources, high production costs, poor plastic performance, not conducive to popularization and application