Name | ANTIFOAM SO-25 MOLECULAR BIOLOGY*REAGENT |
Synonyms | DEFOAMER ANTI FOAM Antifoam 1410 Foam Ban MS-575 ANTI FOAM FOR SILICON OIL DefoaMer, Drilling DefoaMer ANTIFOAM SO-25 MOLECULAR BIOLOGY*REAGENT |
Appearance | Milky white liquid |
PH | 6~8 |
Physical and Chemical Properties | It can quickly eliminate the foam generated by lignin and other surfactants, especially in pulping, washing, papermaking and sizing. It has rapid defoaming, excellent foam suppression performance, low dosage, and no late pollution. In the black liquid system, this product has the most advanced technology in China, with less usage and more thorough foam suppression compared to similar domestic products. |
Use | Used as an defoamer. Used for systems with high anti foaming requirements, such as in alkaline pulping or pressure washer washing of pulp, bamboo pulp, sugarcane pulp, neutral pulping, water treatment, plant fiber pulp, chemical cleaning with high temperature and strong alkali, and defoaming in aqueous systems with high temperature and strong alkali. |
Composed of a combination of polymethyl siloxane and low foaming surfactants.
defoamer refers to substances that can reduce the surface tension of water, solution, suspension, etc., prevent foam formation, or reduce or eliminate the original foam. In the papermaking process, due to unreasonable sizing, poor washing of pulp, the use of alkaline fillers in acidic systems, the addition of various additives and other reasons will accumulate foam in the wet part of the papermaking system, resulting in the formation of foam point through the curtain on the copied paper. According to the specific situation, various defoamers can be added to the papermaking production process. The defoamers used in the early days include kerosene, paraffin oil and other hydrocarbon oils, sulfonated oil, sodium oleate, octanol, etc. Recently, the effective components of defoamers widely used include silicone, polyether surfactant, fatty amide surfactant, etc. Defoamers can be divided into oil-based and water-based defoamers, and their effective active components are roughly the same. The advantage of water-based defoamers is that they have minimal influence on various other additives and will not produce Accumulation in the cycle avoids the occurrence of resin obstacles, thus becoming the direction of development.
Defoaming agent can weaken the stability of mineralized foam, thus eliminating the harmful effect of excessive foam on sorting effect and foam transportation. Some inorganic salts and higher fatty alcohols or higher fatty acids, esters, and hydrocarbons have defoaming effects. The mechanism of defoaming agent is not clear enough. Therefore, the choice of defoaming agent is mostly based on the properties of the foam solution and the test effect. The effectiveness of defoamers is often targeted, and foams with different characteristics must use certain types of agents to be effective. Most defoamers are insoluble in water and are mostly used as emulsifiers. Commonly used defoamers are: activated carbon, hydrophobic quartz powder, aluminum silicate powder, water glass, sodium tripolyphosphate, sodium hexametaphosphate, organosiloxane, dimethylsiloxane polymer, vegetable oil, animal oil, castor oil, 2-ethylhexanol, diisobutyl methanol, fatty acid metal soap, fatty acid ester (such as Spans, stan), alkyl lactate, sulfonated tall oil, sulfonated oil, polyamide, polyether, polyalkylated polymer, polypropylene oxide polyamine, carboxylic acid-N-alkyl amide, Polybutene defoamer, high molecular weight polyethylene glycol, etc.