Biodegradable material and preparation method thereof

Abstract

The invention discloses a biodegradable material and a preparation method thereof. The biodegradable material comprises the following raw materials in parts by weight: 10-79 parts of bio-based resin,5-45 parts of a bio-based filler, 3-20 parts of modified nano calcium carbonate, 5-15 parts of talcum powder, 5-15 parts of glass fiber powder, 6-18 parts of zinc oxide powder, 5-20 parts of a plasticizer, 1-5 parts of a lubricant, 0.5-5 parts of a biodegradation accelerator, 10-50 parts of an antistatic agent and 3-15 parts of epoxidized vegetable oil. The biodegradable material disclosed by theinvention is safe, environment-friendly and non-toxic, has complete biodegradability, relieves environmental pressure caused by large-scale use of fossil plastic, has excellent mechanical properties compared with an existing biodegradable material, and has the advantages that the temperature resistance, the wear resistance, the hydrophobicity, the creep resistance, the rigidity, the tensile property and the impact resistance are remarkably improved, and production cost is significantly reduced.

Description

technical field [0001] The invention relates to the technical field of biodegradable materials, in particular to a biodegradable material and a preparation method thereof. Background technique [0002] The problems of environmental degradation and resource shortage in the world are becoming more and more prominent, and the pollution of the environment by ecological solid waste and the waste of resources caused by it are becoming more and more serious. With the continuous improvement of economic development and people's living standards, the discharge of solid waste has increased sharply. It is estimated that the world adds about 10 billion tons of solid waste every year, or 2 tons per capita. The increasing solid waste has brought great challenges to the human living environment and has become one of the main factors of environmental pollution. [0003] Plastic is widely favored by people for its light weight, waterproof, corrosion resistance, high strength and other excel...

AI Technical Summary

Problems solved by technology

Polylactic acid (PLA) is the biodegradable plastic with the best comprehensive properties developed in recent years. It has no pollution to the environment. It has good biodegradability and can be completely degraded by microorganisms in nature after use. Generates carbon dioxide and water, does not pollute the environment, and meets the requirements of environmental protection in today's world; however, the crystallization of polylactic acid is slow, the ester bond energy in the molecular chain is small, and it is easy to break, resulting in low thermal deformation temperature, low impact strength and toughness of polylactic acid. no problem

[0004] The research on biodegradable materials in the industry has achieved a lot of results, but its mechanical properties are still not comparable to those of non-biodegradable materials, and the price cannot be close to traditional fossil plastic products.

These greatly limit the use value of biodegradable materials, making it impossible to promote and mass-produce biodegradable materials

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