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In recent years, with the development of building an environment-friendly society and the improvement of people's living standards, the consumption of various packaging materials has increased signifi......
2020-01-101. Adding this method before foaming can inhibit the production of foam by adding defoaming agent in the system that may produce foam in advance. For closed container and device, defoaming agent can e......
2020-01-10Defoamer does not exist in the system in the dissolved state, but is generally suspended in the system. Therefore, the amount and color of hydrophobic particles, silicone oil and hydrophobic particles......
2020-01-09The property of silicone oil in defoamer determines the antifoaming time of defoamer. The amount of silicone oil determines the use time of defoamer in the system. The particle size of defoamer determ......
2020-01-09The problem of acid-base stability, if the acid and alkali resistance of defoaming is not good, causes the decomposition of silicone oil, resulting in the failure of defoamer. Some chemical components......
2020-01-09Defoamer is mainly used to reduce the surface tension and eliminate foam during processing. Most of the bubbles are produced by external forces. The surface active substances in the solution are forme......
2020-01-09Defoamers can be roughly divided into two categories: one is able to eliminate the generated bubbles, such as ethanol; the other is able to inhibit the formation of bubbles, such as emulsified silicon......
2020-01-09Self compacting concrete is a kind of high-performance concrete, which has high workability, i.e. high fluidity, high resistance to segregation, high clearance and high filling. It realizes that the c......
2020-01-08The first kind of defoamer is mainly composed of various organic substances, such as fatty acids, mineral oils, fatty amides, low alcohols, etc. Most of the defoamers are natural substances, which cau......
2020-01-081, measure cylinder method: add a suitable amount of low viscosity coating in the measuring cylinder, add defoamer, shake it and observe the height of foam every once in a while. ......
2020-01-08Under normal circumstances, after the ordinary cement concrete paste hardens, there will be a lot of pores in the internal structure of the paste, and the pores are the main factors affecting the conc......
2020-01-08Before using defoamer, it should be tested first, otherwise it will not achieve the ideal effect due to improper selection, or even produce certain harm. We can test the performance of defoamer qualit......
2020-01-08This paper (Paper 360 News) pulping process, in order to obtain white pulp, wood chips will undergo cooking, washing and bleaching process (Figure 1), but in this series of fiber treatment process, co......
2020-01-07Wide application: due to the special chemical structure of silicone oil, it is neither soluble with water or substances containing polar groups, nor with hydrocarbons or organic substances containing ......
2020-01-07Polyether defoamer is a kind of defoamer widely used in recent years, and its defoaming property is good. The advantages of polyether defoamers are that they are nontoxic and convenient to use. The mo......
2020-01-07
