Low-odor heat-resistant straw biodegradable material and preparation method thereof

Abstract

The invention discloses a low-odor heat-resistant straw biodegradable material which mainly comprises the following components in parts by mass: 30-50 parts of polylactic acid; 30 to 50 parts of poly (butylene succinate); 10 to 30 parts of inorganic powder; 0.4 to 0.8 part of a compound antioxidant; 0.3 to 0.8 part of a lubricant; 0.2 to 0.5 part of a compound deodorant; and 0.1 to 0.5 part of a chain extender. According to the straw material disclosed by the invention, the odor of the material is better reduced by adding a compound deodorant of porous nano silicon dioxide and organic phytol, the odor removal effect is more obvious than that in the prior art, and the odor grade of the straw material is less than or equal to 4 compared with that of a traditional straw material through tests. The heat resistance and toughness of the material are improved by adding PBS, and the Vicat softening point temperature is greater than or equal to 100 DEG C. By adding the inorganic powder, the strength of the material is improved, and the cost of the material is reduced.

Description

technical field [0001] The invention relates to the field of composite materials, in particular to a low-odor heat-resistant straw biodegradable material and a preparation method thereof. Background technique [0002] With the development of society, the demand for plastic products is increasing. As the main drinking tool for beverages, plastic straws are gradually shifting from traditional materials to biodegradable materials. Most of the traditional plastic straws are made of petroleum-based PP. Materials, the use of a large number of products not only wastes petroleum resources, but more importantly, the waste will bring serious pollution to the human living environment, and biodegradable materials can be degraded into carbon dioxide and water, which are environmentally friendly materials. With the promulgation of the global plastic ban, many manufacturers have begun to use straws made of biodegradable materials. [0003] Polylactic acid (PLA) material, whose monomers ar...

AI Technical Summary

Problems solved by technology

[0006] Chinese patent application CN112724614 A discloses a weather-resistant, low-odor PBAT-based alloy and its preparation method and application. The weather resistance of the material is improved by adding AES and weather-resistant additives, and the odor of the material is effectively reduced by adding molecular sieves. The grade is 3.5, but AES is not a biodegradable material. In addition, the heat resistance of PBAT and AES itself is relatively poor, resulting in low heat resistance of alloy materials

In short, the requirements for biodegradable low-odor heat-resistant straws cannot be met

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