Global Silicone Network reported on July 7: Defoaming agent refers to a type of chemical product used to prevent the formation of foam, destroy the stability of foam, and achieve rapid defoaming. Its working principle is to diffuse to the gas-liquid interface, wet the foam, make the local liquid film thinner, and then cause the entire foam to rupture, thereby achieving a defoaming effect.
So, in what fields can defoamers be applied?
Metal Cleaning
Defoaming agents are suitable for degreasing agents, metalworking fluids, cutting fluids, pre-treatment cleaning agents (passivation and phosphating processes), spray electroplating cleaning agents, degreasing agents, metal drawing fluids, flux, machine water, etching fluids, steel plate cleaning agents, electroplating, chemical immersion cleaning and other products.
Textile printing and dyeing
During the processing of textiles, such as dyeing, printing, desizing, scouring, bleaching and washing, shrinkage and wrinkle-proof finishing, coating finishing, bonding and other processes, foam may appear and affect product quality.
Water treatment
Various sewage treatment and industrial water systems will form foam due to the presence of impurities in the liquid. Defoamers can quickly eliminate foam produced by sludge, water treatment chemicals, fungicides, etc., and will not block the circulating water treatment network, thus ensuring the smooth operation of the system.
Food Processing
Jelly, juice, beverages, instant food, ice cream, jam, condiments, soy products, meat products, beer processing, baked food, oil processing, vegetable processing, fermentation, etc. all have processes that are prone to foaming, and defoaming agents need to be added to increase production rates.
Paper Industry
Wheat straw, rice straw, pine wood, waste paper, bamboo and other surfactants in papermaking pulp are prone to produce foam. Adding defoamers during pulping, pulp washing and black liquor treatment can effectively control pulp overflow and improve papermaking quality.
