The role of defoaming agent in drying equipment
For architectural coatings, the defoamer must combine with the stable surfactant layer and penetrate into the bubble film bimolecular film. After contacting the bubble, it spreads rapidly to form a very thin double film layer. As the defoamer further spreads and penetrates, it replaces the original foam membrane wall. Because the liquid with low surface tension always flows to the liquid with high surface tension, the surface tension of the defoamer is lower than the surface tension of the bubble liquid, so the defoamer molecules adhere to the surface of the bubble film to reduce the local surface tension of the bubble film surface, while the rest of the film surface still maintains a large surface tension. The plastic masterbatch defoaming masterbatch can adjust the addition ratio according to the moisture content of the raw material. The plastic masterbatch has the characteristics of small addition amount (usually 2% to 4%), no change in processing technology, non-toxic, non-irritating, good plasticization, etc. Plastic masterbatch can absorb a large amount of plastic moisture during molding. Plastic masterbatch can be widely used in the processing of recycled materials, damp plastics and degradable plastics. Plastic masterbatch can ensure the yield rate, improve production efficiency, reduce energy consumption and ultimately reduce production costs under the condition of ensuring product quality. It has a serious impact on the production of plastic products. Therefore, enterprises generally use additional drying equipment to dry plastics, which results in a waste of energy and manpower and increases the cost of products. By using defoaming masterbatch, you only need to add it to the raw materials without changing the production process of the product, and you can eliminate all defects such as blisters, moire, cracks, freckles, etc. caused by moisture. It has no adverse effect on the physical and mechanical properties of the product, saves time and electricity, improves production efficiency, and reduces costs.
