Introduction: What kind of coating is really fireproof? What is the fire protection mechanism of fireproof coating? Let's take a look at the fire protection mechanism of the most common intumescent fire-retardant coatings and non-intumescent fire-retardant coatings today.
Sodium Lauryl Ether Sulfate (SLES),white or yellowish paste, an anionic Detergent and surfactant found in many personal care products (soaps, shampoos, toothpaste, etc.). SLES is an inexpensive and very effective foaming agent.SLES, Sodium Lauryl Sulfate (SLS), ammonium lauryl sulfate (ALS), and sodium pareth sulfate are surfactants that are used in many cosmetic products for their cleaning and emulsifying properties. They behave similarly to soap. It is derived from palm kernel oil or coconut oil.
Its chemical formula is CH3(CH2)11(OCH2CH2)nOSO3Na. Sometimes the number represented by n is specified in the name, for example laureth-2 sulfate. The product is heterogeneous in the number of ethoxyl groups, where n is the mean. Laureth-3 sulfate is common in commercial products.
SLES is prepared by ethoxylation of dodecyl alcohol, which is produced industrially from palm kernel oil or coconut oil. The resulting ethoxylate is converted to a half ester of sulfuric ACID , which is neutralized by conversion to the sodium salt.[1] The related surfactant sodium lauryl sulfate (also known as sodium dodecyl sulfate or SDS) is produced similarly, but without the ethoxylation step. SLS and ammonium lauryl sulfate (ALS) are commonly used alternatives to SLES in consumer products.
SLES is a kind of anionic surfactant with excellent performance.
It has good cleaning, emulsifying, wetting, densifying and foaming performance,with good solvency, wide compatibility, strong resistance to hard water, high biodegradation, and low irritation to skin and eye.
1.SLES(Sodium Laureth Sulphate) widely used in liquid detergent.; e.g. Shampoo, dishwashing detergent, bubble bath liquid, hand washing etc.
2.If using SLES(Sodium Lauryl Ether Sulfate) to replace LABSA partially, phosphate can be saved or reduced, and general dosage of active matter may be reduced, in washing powder and detergent for heavy dirty.
3.SLES(Sodium Lauryl Ether Sulphate) can be used as lubricant, dyeing agent, cleanser, foaming agent and degreasing agent.; e.g. printing and dyeing industry, petroleum and leather industry.
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Intumescent fire retardant coating: When the flame retardant coating is exposed to flame, the foaming component in the coating film is thermally decomposed to form a heat-insulating spongy foam layer, which prevents flame propagation. The fire-retardant additives in paints are mainly composed of foaming ingredients, including carbon source, foaming agent and organic nitrogen compounds. They can be used together to make the fireproof effect better.
Non-intumescent fire-retardant coatings: Non-intumescent fire-retardant coatings must contain flame-retardant (fire-retardant) components, such as phosphorus-containing, halogen-containing organics (such as decabromodiphenyl ether), sodium borate, and antimony trioxide. In order to obtain excellent fire-retardant performance, in addition to flame retardants, non-intumescent fire-retardant coatings should also be selected with suitable binders. Since halogens (generally chlorine and bromine) and phosphorus are effective in improving fire resistance, it is best to use binders containing these elements. For example, we can use vinyl chloride or vinylidene chloride copolymer emulsion or chlorinated rubber latex as base material. In addition, we can use tricresyl phosphate and β-trichloroethylene phosphate as flame retardant plasticizers.
Talking about the Fire Protection Mechanism of Common Fireproof Coatings