What should I pay attention to when using silicone defoamer
Generally speaking, foam does not cause any major harm in real life, and it can also play a certain aesthetic role. However, if foam appears in industrial production, it is different, and it can easily cause certain harm. In this case, a certain amount of defoamer products need to be added. The most popular in the current industry are water-based defoamers and silicone defoamers.
However, according to industry experts, although silicone defoamers and water-based defoamers are very popular, this does not mean that people can use them casually, because they also need to master certain precautions for use. The following takes silicone defoamer products as an example, and professionals from defoamer manufacturers will give you a detailed introduction.
Generally, high-temperature printing and dyeing silicone defoamers or various types of silicone defoamers are often seen in factory processing. Bubble substances are used in large quantities in processes such as dust prevention, fire prevention, washing and foam making. In fact, the generation of these bubbles will have certain disadvantages for some industrial production, because if the silicone defoamer is retained in the liquid or feed port for a long time, it will naturally cause the liquid or solid to overflow the water surface and have excellent existence ability on the film surface. In fact, of course, the most common ones are water-based bubbles and oily bubbles.
However, in most cases, considering that the silicone defoamer itself is not easy to burst, this will more or less affect the stability of the foam and the surface adhesion and elasticity. In industrial production, considering the existence of its surface activity, bubbles will play their main role, so that the hydrophilic and hydrophobic groups can be better diluted by bubbles. In this way, the rules are very orderly and will not be affected by other negative effects. These factors are inseparable from the existence of silicone defoamers.
In the current industrial market, considering that there are many types of silicone defoamers and a wide range of applications, the foams generally sold on the market are spread on the surface after the foam is produced, and finally form a heavy film. Generally, when manufacturers produce products, they consider their quality, so when choosing high-temperature silicone defoamers, they must comply with the rules and requirements.
And general silicone defoamers are often configured through a variety of combined components. It is not only an active substance that can be used in various environments, but also can survive in stearic acid environments. The disadvantage is that it can only be effective at low temperatures, and will not play a role at high temperatures.
In actual product use, it is generally found in pulp mills or other paper mills that some bleaching or washing processes will be added on the basis of using silicone defoamers, in order to allow the thickener and pulp washer to be better integrated. When it comes to paper mills using silicone defoamers, the best way is to use the paper machine headbox or coating, etc.
In terms of quantity added: In order to save costs, everyone used two kinds of organosilicon defoamers before, but now there has been a big change in this regard. Using high-content organosilicon defoamers can not only save costs, but more importantly, it is economical and applicable. What should I do if the organosilicon defoamer precipitates? Some organosilicon defoamers are not well dispersed, so they are easy to cause precipitation. At this time, the solution is to apply glue to prevent interference.
