Master batch composition based on PVA starch as well as master batch and application thereof

Abstract

The invention relates to the field of biodegradable materials and discloses a master batch composition based on PVA starch as well as a master batch and application of the master batch composition. The master batch composition comprises, by weight, 50-90 parts of high-temperature water-soluble PVA resins, 20-50 parts of starch, 10-40 parts of plasticizers, 1-6 parts of thermal stabilizers, 1-6 parts of lubricants and 0.5-3 parts of antioxidants. The master batch composition based on the PVA starch and the master batch thereof provided by the invention can realize the feasibility of the granulation of the high-temperature water-soluble PVA resins, according to the PVA / starch master batch composition and the master batch provided by the invention, the cost is greatly reduced while the environmental protection is achieved.

Description

technical field [0001] The invention belongs to the field of biodegradable materials, and in particular relates to a PVA starch-based masterbatch composition, the masterbatch and its application. Background technique [0002] In recent years, people's demand for plastic packaging products has been increasing. To a certain extent, plastic packaging is an integral part of packaging for food, fruits and vegetables, and daily chemicals. Plastic packaging has been more widely used in daily life and food storage. As a result, people's requirements for environmental protection are increasing day by day, not only requiring plastic packaging products to have higher performance and multiple functions, but also requiring plastic packaging to be non-polluting and pollution-free to food, people, and the environment. Therefore, people shift the focus of research to new plastic packaging materials that are pollution-free and degradable. [0003] The PVA film is soluble in water, has high ...

AI Technical Summary

Problems solved by technology

Although my country has made some progress in the research on the water temperature resistance of PVA films, it has only developed medium-temperature PVA films with low water temperature resistance (60°C), easy curling in water, and easy moisture absorption and wrinkles at room temperature. The disadvantages make it impossible to continue research and development of downstream products, which limits the promotion and use of polyvinyl alcohol films

The development of domestic high-temperature polyvinyl alcohol film has not made a breakthrough, and the source can only rely on imports, which greatly increases the cost of use

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