defoamer-antifoam

Application of fumed silica in defoamer The fumed silica is a kind of high-purity, fine, amorphous nanometer silica powder. The specific surface area is 150 ~ 380m2 / g, the primary particle size is between 7 ~ 40 nm, the aggregate particle size is about 200-500nm, the agglomerate particle size is about 5 ~ 20μm, and SiO2 ≥99.5%. Functional additives. In addition to being widely used in silicone rubber, coatings, inks, paints, plastics and other fields, it is also an important component in high-efficiency silicone oil defoamers, which plays a role of dispersion, adsorption, thickening and anti-settling. Vapor-phase process carbon black generally has two types of hydrophilic and hydrophobic products. The hydrophobic products are obtained by surface treatment of hydrophilic products. As an important auxiliary in the industry, the defoamer has a small amount but is indispensable. It is widely used in various fields such as textile, papermaking, petroleum, food, pharmaceutical and so o...

High temperature overflow printing and dyeing defoamer Defoamer for textile can workable at over 100 ℃？ yes or no? Printing and dyeing process: Raw cloth preparation → Singeing → Refining → Bleaching → Setting → Satinization → Dyeing and printing →Finishing. Here will show INVELY-6200 which is workable over 100 ℃ with good performance. Desizing The main role of desizing: remove slurry as much as possible, creating favorable conditions for subsequent processing. Common alkali desizing principle: The slurry swells under the action of hot alkaline solution, from the gel state to the sol state, and becomes loose with the fiber, which is easy to wash off. Foaming occurs more during desizing, and the application of defoaming agents is mainly concerned with the pH and temperature of the foaming environment. INVELY-6200 is recommended when the temperature is higher than 90 ° C.  Dyeing According to the temperature can be divided into: normal temperature dyeing (room tempe...

How to choose defoamer for textile  auxiliary ? Introduction   Large amount of foam is produced during the wet processing of textile dyeing and finishing because of the using textile auxiliaries, which affect the production operation, the production capacity go down, product quality would be degraded.   Therefore, it must remove the harm ful foam from the textile processing. By the way, it has been proved that adding defoamer is the best efficient way to eliminate foam in the textile processing. The following are some of our experiences in the development and customer service and how to use defoamers for textile printing and dyeing? Development of  defoamer for  textile Ø   The demand of defoamer for textile (1)   As end user of textile factory, usually evaluate the product quality by trial on the machine. So defoamer must meet: --Viscosity should not be too high, and defoamer is easy to use, easy to control the addition amou...

Nanjing Invelychem has developed a defoamer (anti-foaming agent); Invely-0030, which exhibits a superior defoaming property in the sugarcane ethanol production process. 【 Background of the development 】 Amid the taking measures against global warming, bioethanol is considered a green alternative to gasoline that does not affect the total amount of CO 2 in the atmosphere. It is expected to be carbon-neutral biofuel and its use has been steadily increasing mainly in U.S. and Brazil. Bioethanol is produced from feedstock crops such as sugarcanes and corns via alcoholic fermentation. Especially sugarcanes give very high bioethanol yield per unit of land; thus bioethanol has been already widely used in Brazil where the largest amount of sugarcane is produced worldwide. Bioethanol is produced by a decomposition of sugar to ethanol and carbon dioxide through alcoholic fermentation using yeast. Carbon dioxide generated during the fermentation process creates a lot of foams, and th...

Introduction to textile printing and dyeing defoamer Introduction Due to the large-scale use of textile dyeing and finishing auxiliaries, a large amount of foam is produced during the wet processing of textile dyeing and finishing, which makes the production operation inconvenient, the production capacity is reduced, and the product quality is degraded, which brings difficulties to normal operation. Therefore, the textile dyeing and finishing industry must eliminate harmful foam. The use of defoamers to eliminate harmful foam has proven to be the most effective and economical method in the textile dyeing and finishing industry. The following are some of our experiences in the development and customer service of defoamers for textile printing and dyeing, including the experience in the development of defoamers for textile printing and dyeing, various methods of performance testing, and how to use defoamers for textile printing and dyeing. Development of antifoaming agent for t...