Method for preparing high-melting-point water-based antioxidant emulsion at room temperature

Abstract

The invention discloses a method for preparing high-melting-point water-based antioxidant emulsion at the room temperature, and belongs to the technical field of antioxidants. The method includes adding 45-140 g of primary antioxidants, 15-40 g of auxiliary antioxidants and 0.3-1.2 g of defoaming agents into 100-300 g of solvents and completely dissolving raw materials under magnetic stirring effects; dissolving 2.5-5 g of emulsifiers and 0.5-1.5 g of dispersing agents in 50-100 g of deionized water; shearing and emulsifying primary antioxidant solution under the condition of 3000-9000 revolutions / minute for 10-20 s, slowly dropwise adding emulsifier solution into the primary antioxidant solution in shearing and emulsifying procedures, slowly dissolving out the primary antioxidants from the solvents, shearing the primary antioxidants under the condition of 9000-23000 revolutions / minute for 10-120 min, cooling the primary antioxidants until the temperatures of the primary antioxidants reach the room temperature, then adding 0.2-1.5 g of thickening agents into the primary antioxidants to obtain mixtures and allowing the mixtures to stand still for 5-20 min to obtain the high-melting-point water-based antioxidant emulsion. The method has the advantages that the high-melting-point water-based antioxidant emulsion has good particle size and a high melting point; the method is easy to implement and high in efficiency, energy can be saved, and the shortcomings of high energy consumption, complicated processes and the like in industrial antioxidant emulsion preparation procedures can be overcome by the aid of the method.

Description

technical field [0001] The invention belongs to the technical field of antioxidants, and in particular relates to a method for preparing a high-melting-point water-based antioxidant emulsion at room temperature. The selected antioxidant is suitable for the emulsion polymerization production process. Background technique [0002] During the synthesis process of most polymers, oxygen is strictly controlled to eliminate factors that may cause material aging during the polymerization process. However, during the processing, storage and use of polymers, they will inevitably be exposed to oxygen, heat, light and machinery. With the passage of time, polymer materials will be accompanied by discoloration, various physical and mechanical properties, etc., and will eventually lose their use value. Since the oxidation of polymer materials is an irreversible process, which will eventually lead to a shortened service life of the material, in order to slow down the oxidation reaction, ant...

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Problems solved by technology

[0008] Although the above method can disperse the antioxidant, its preparation process is complicated, consumes a lot of energy, and the production cycle is long, which will increase the production cost virtually and is not convenient for industrial production.