Silicone defoamers are currently recognized as the main general purpose defoamers, which have two characteristics that are difficult to simultaneously possess with low surface tension and low volatility. Preservatives are a class of food additives that inhibit microbial activity and prevent food spoilage. In order for food to have a certain shelf life, certain measures must be taken to prevent microbial infection and reproduction. Practice has proven that the use of preservatives is one of the most economical, effective and simple ways to achieve the above objectives. Moreover, they are generally chemically inert, insoluble in water and various organic solvents. Because of their stability, such defoamers are generally non-toxic or less toxic.


An organic defoamer is an organic compound that is both a single compound and a mixture of formulas. During the treatment of dimethicone defoamer, when desizing agent is used in desizing of the product, bleaching and washing are used as bleaching agent and detergent, in order to better and more evenly penetrate into the fabric, high temperature scouring is used to cause foam. produce. Thickeners are mainly used to improve and increase the consistency of foods, maintain the color, aroma, taste and stability of fluid foods and jelly foods, improve the physical properties of foods, and make foods have a lubricious and palatable feeling. Thickeners can increase the viscosity of a food or form a gel, thereby changing the physical properties of the food, imparting a sticky, suitable mouthfeel to the food, and having the effect of emulsification, stabilization or suspension, which is currently approved for use in China. There are 39 kinds of thickeners. Thickeners are all hydrophilic polymer compounds, also known as hydrosols. Due to the diversity and specificity of the application of organic defoamers, organic defoamers are often a special defoamer. In order to evaluate the ideal defoamer, its physical and chemical properties must meet the requirements of the object of use. Generally consider the following factors: (1) the surface tension is lower than the foam medium, (2) insoluble in the foam medium; (3) not with the foam The medium reacts without decomposition, (4) low toxicity or non-toxicity, (5) has good defoaming and foam suppression ability; (6) stable storage and low cost.