What is the silicone defoamer test item? What project indicators are included? The following list of silicone defoamer testing items, welcome to reference.


First, silicone defoamer testing items


1, appearance: describe the physical characteristics of silicone defoamer, such as color, shape (liquid, powder, etc.), whether uniform.


2. pH value: an indicator to measure the acidity and alkalinity of the product, which has an impact on the defoaming effect and the use environment.


3, stability: refers to the ability of the product to maintain the same performance when stored or used under certain conditions.


4, defoaming performance: evaluate the speed and efficiency of defoaming agent to reduce foam formation.


5, foam suppression performance: measure the ability of defoamer to prevent foam from forming again.


6, solid content: indicates the proportion of non-volatile components of the product, related to the effective concentration of defoamer.


7, density: the ratio of the mass of the substance to the volume, affecting the use of defoamer and storage conditions.


8, sensory: through the human senses (smell, touch) to evaluate the characteristics of defoamer, such as smell, touch, etc.


9, non-volatile content: reflects the proportion of components that do not volatilize at a specific temperature, and is related to the stability and expiration date of the product.


10, chemical stability: refers to the ability of defoamer to maintain its original properties in chemical reactions or extreme conditions.


Since the items specified in different execution standards are different, we can choose the appropriate items for testing according to the execution standards of the products.


The implementation standards of silicone defoamer are: HG/T 5088-2016 "Silicone detergent defoamer", HG/T 5089-2017 "silicone polyacrylic slurry defoamer", HG/T 4385-2012 "silicone detergent Defoamer", etc. These standards all stipulate which items need to be tested.


Second, how to choose silicone defoamer test items


Silicone defoamer is a kind of auxiliary agent used to eliminate the foam formed by the material in the production process, and its main component is silicone oil. This defoamer is mainly made of polyether modified silicone oil, high and low viscosity methyl silicone oil and ultra-fine silica silicone resin. It has the characteristics of low surface tension, good thermal stability and superior chemical stability, but it also has the disadvantages of high temperature resistance and poor alkali resistance. Silicone defoamer is widely used in chemical industry, paper making, coating, food, textile, pharmaceutical and other industrial sectors.


What specific items need to be tested when handling the silicone defoamer test report? We need to select a part of the silicone defoamer items for testing according to the use of the silicone defoamer report in order to save testing costs. We can also let silicone defoamer third-party testing institutions recommend some routine items for us, such as: appearance, pH value, stability, defoamer performance, foam suppression performance, solid content.