How to choose defoamer

Introduction: no matter in food or in industry, many defoamers need to be used Then, how to choose defoamers? Can defoamers be used? Introduce these problems to you There are many kinds of defoamers, such as organosiloxane, polyether, grafting of silicon and ether, containing amines, imines and amides, which have the characteristics of faster defoaming speed, longer foam inhibition time, wider applicable medium range, and even harsh medium environment such as high temperature, strong acid and strong base It is widely used to remove harmful foam produced in latex, textile sizing, food fermentation, biological medicine, coating, petrochemical, paper making, industrial cleaning and other industries How to choose defoamer? How to choose defoamer 1 Consider whether the defoamer system is suitable for your own system? 1) first, you should consider whether the defoamer system is suitable for your own industry Because defoamers are oily and water-based, different defoamers are used in different industries 2) Secondly, you should consider the amount of alcohol or organic solvent in the system Because alcohol has defoaming effect is the consensus, so sometimes there will be some interference 2 PH range of defoamer The requirements of defoamer in strong acid and strong alkali environment are quite strict, which needs to explain carrier environment with defoamer manufacturer 3 The long-term effect of defoamer should be considered Some defoamers are good at first, but the effect is much worse after a period of time There are many influencing factors, at least two reasons: 1) defoamer is compatibilized by surfactant, 2) main defoamer can be absorbed by colloidal resin 4 Defoaming capacity under static condition When the liquid producing bubbles flows back to the storage tank or directly to the packaging barrel, it is OK if the defoaming is fast 5 The defoaming ability in dynamic situation 1) relatively closed small space dynamic defoaming effect 2) Open dynamic defoaming effect 6 Applicability 1) temperature The change of temperature leads to the change of surfactant foam stabilization and defoaming 2) Customer habits On the issue of whether defoamers can be eaten, Xiaobian thinks that food defoamers can be eaten as long as they are used within the dosage range allowed by the state, but if we use food defoamers excessively, we should pay attention to it, which may cause harm to human body The understanding of food safety knowledge can help us analyze food safety problems, master more food knowledge, and the food safety detector can also be used to detect food safety Editor in charge: he xianrob