Detergent additives are classified into inorganic additives, such as sodium silicate, sodium carbonate, sodium sulfate and other inorganic salts; Organic additives, such as anti-redeposition agents, sodium carboxymethyl cellulose.
Adding auxiliary materials related to decontamination to detergent that can improve washing performance is called washing additives, and detergent additives are an important part of detergent. The main functions of detergent additives: first, it has the effect of softening water, the second is to play the role of alkaline buffering, and finally, it has the role of wetting, emulsification, suspension and dispersion, mainly to prevent dirt from re-attaching to the clothing and anti-redeposition.
What are the main detergent additives?
Sodium silicate
It is an alkaline buffer, commonly known as water glass or paucine, which is an important alkaline pH buffer detergent additive, accounting for about 10% to 3% of the addition in powdered detergent. The first function is pH buffer, corrosion resistance, softening water; The second is to protect the fabric to improve the detergency; The third is to improve the fluidity of slurry and powder; Fourth, it has a synergistic effect with other auxiliaries.
Sodium carbonate
In the detergent additives belong to the soft water agent, is a precipitation-type soft water agent, the common name is also called soda ash, and some common name is washing alkali, but in fact, it is not alkali, it is salt. In international trade, it is sometimes called soda or alkali ash. Sodium carbonate can improve the alkalinity, can produce calcium carbonate or magnesium precipitation with calcium and magnesium ions in water, so as to soften the water, is the main component of alkaline detergent.
4A zeolite
Ion exchange type water softener is a good ion exchange type auxiliary agent, which helps calcium and magnesium ion exchange and softenes water. Because zeolite is insoluble in water, in order to make it not remain on the fabric, there are certain requirements for the particle size of 4A zeolite. In addition, the effect of using zeolite with sodium tripolyphosphate is better than that of using it alone. 4A zeolite also has the function of buffering, dispersing and resisting redeposition.
Sodium citrate
It is a chelating water softener, and the common sodium citrate is sodium citrate dihydrate and sodium citrate pentahydrate. They have excellent solubility and can form chelates with calcium and magnesium ions in water to soften water. Sodium citrate is a weak acid strong base salt, and citric acid can form a strong pH buffer system, in the cleaning process has the ability to maintain a stable pH range, so in some cases not suitable for a wide range of pH changes, sodium citrate has a unique place.
Sodium sulfate
Sodium sulfate decahydrate, commonly known as glauberite. High purity, fine particles of anhydrous sodium sulfate, also known as sodium powder. The amount of sodium sulfate added in washing powder is as high as 20% to 60%, which is a large amount of ordinary washing powder additives, but its effect is much smaller than other additives. Mainly because of the low price of sodium sulfate, in the detergent molding process, the fluidity of the detergent becomes better, especially the role of laundry detergent molding.
Sodium percarbonate bleach
Sodium percarbonate, commonly known as solid hydrogen peroxide, is an addition compound of hydrogen peroxide and sodium carbonate, which mainly plays a bleaching role.
Polycarboxylate chelating water softener
Polycarboxylate, commonly used in the field of detergents, are two polymers that are composed of acrylic homopolymer and acrylic maleic acid copolymer. This kind of substance has good binding force on calcium and magnesium ions, has obvious dispersion effect on calcium and magnesium carbonate, has good compatibility with detergent components such as surfactant additives, and has good anti-redeposition effect.
Sodium carboxymethyl cellulose is an anti-fouling redeposition agent, itself is no decontamination effect, in the detergent is mainly to prevent the redeposition of dirt, improve the foaming force and foam stability of detergent, but also has the product thickening, stable colloidal, prevent delamination and other colloidal chemical functions.
EDTA is a chelating water softener
EDTA ethylenediamine tetraacetic acid, is an important complex agent, has six coordination atoms, the formation of the complex is called chelate. It can form chelates with calcium, magnesium and other metal ions in water to soften the water.
Essence
The addition of flavor in detergent is widely loved by consumers, and the addition of flavor in detergent not only makes the detergent have excellent performance, but also makes the fabric or hair after washing, with a pleasant fresh fragrance. The amount of flavor added to the detergent is generally about 1%, but the amount of different products is also different, such as soap, because of its special function, the amount of flavor is 1.0%~2.5%, laundry soap 0.5%~1%, laundry powder 0.1%~0.2%, according to different products. Commonly used fragrances are floral, grass, wood, and artificial incense. Preparation of detergent flavor should pay attention to the following two points: First, safety, to minimize the skin, hair, eye stimulation, adverse effects on the human body; The second is stability, because the ingredients in the detergent are more, the stability of the essence should be maintained under alkaline conditions, not to let it decompose and discolor, and it cannot play a role.
Post time: Oct-30-2024
