Silicone defoaming agent is a silicon-containing surfactant as a family of silicone compounds, since the 1960s has been used in various industrial fields, but large-scale and comprehensive rapid development, from the beginning of the 80's. As a silicone defoaming agent, its application is also very wide, more and more by all walks of life attention.
Silicone has many excellent properties:
(1) chemical inert, will not react with other foaming substances;
② physiological inert, non-toxic, pollution-free, harmless to the environment;
③ has excellent defoaming performance, less dosage;
(4) wide range of applicable temperature, heat, cold, weather and aging resistance outstanding;
⑤ has excellent softness and lubrication performance, is conducive to improving the quality of coated paper. However, the price of silicone products is relatively high, so that some manufacturers can not accept, leading to the current silicone defoaming agent is not widely used. In fact, from the aspect of dosage, due to the small amount of silicone, usually only need to add the mass fraction of the system of 1 ~ 75×10-6 can achieve good defoaming effect, if combined with other defoaming agents can further reduce the cost. Overall, the use of silicone as a defoaming agent compared with the use of other defoaming agents, the cost will not increase. With the continuous improvement of silicone synthesis technology and the continuous reduction of raw materials, the problem of high silicone price can certainly be solved, so containing silicone defoaming agent will be the hot spot of paper defoaming agent market.




use
This product is widely used in textile printing and dyeing, paper making, sewage treatment, cleaning agent, paint and other aspects of the defoaming. When used in printing and dyeing, it has good compatibility with additives in dyeing bath, and does not affect color light and color fastness.
Characteristics and application
There are many varieties of domestic and foreign commodity defoaming agents with different performance. At present, there are roughly 3 types of defoaming agents commonly used, namely polyether type, silicone oil type and silicone ether mixture type.