1. The blowing agent should be a heteropolar surface active substance. Its polar group is hydrophilic and non-polar based. Its molecules can produce an alignment on the interface between air and water (the surface of the bubble). It can strongly reduce the tension of the water. 2. The foaming agent should have proper solubility. The solubility of the foaming agent has a great influence on the foaming performance. If the solubility is high, the consumption is large, or a large amount of foam rapidly occurs, but it cannot be durable; when the solubility is too low, it is impossible to dissolve and play a foaming effect. Lost with the foam. Generally, the solubility of the foaming agent is preferably from 0.2 to 5 g/l. 3. When the dosage is low, it can form bubbles with a large amount, uniform distribution, suitable size, appropriate toughness and low viscosity. 4. No collection, good adaptability to changes in slurry pH and various components in the slurry. 5, non-toxic, odorless, non-corrosive, easy to use, low price, wide source. medicals mould & moulding kit,medicals mould & moulding germany,medicals mould & moulding design,medicals mould & moulding wholesale Global Molding Machinery Co., Ltd , https://www.globalinjectionmolds.com