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2021-03-18 23:36:51
Surfactant molecular ordered assemblies have been widely used in various industrial fields due to their various practical functions, such as emulsification, solubilization, wetting, adsorption, permeation, dispersion, defoaming, thickening and lubrication.
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2021-03-17 00:18:23
Most of the grinding aids used in China's ceramic industry are of high price and single performance. Most of the ceramic grinding aids are still produced with industrial raw materials. As a result, their price is high and it is difficult for users to accept. In addition, due to the shortage of sources, most of them are petroleum or coal chemical products, so it is difficult to promote their application. It is an important way to develop new cheap grinding aids from industrial wastes, and the development of lignosulfonate grinding aids is one of them. Other industrial wastes, such as sodium adipate in oil waste liquid and lanolin in wool spinning industry, are helpful to grinding after processing. If they can be developed and utilized, they can not only reduce production costs, but also prevent waste discharge, which need to be further developed.
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2021-03-15 00:19:39
Surfactant is added to the general pickling solution to obtain bright pickling solution, which can replace the traditional bright etching solution with high chromium, high nitrogen and serious pollution. The function of surfactant is to adsorb on the surface of workpiece and form a barrier adsorption film. Due to the shaking of the workpiece and the convection and diffusion of the solution, the adsorption film on the micro protruding part is easier to desorb than that on the concave part, and the corrosion and oxide scale on the protruding part are concentrated and dissolved by acid, and the dissolution rate is faster than that on the concave part. The reciprocating adsorption, desorption and dissolution also make the micro scratches on the surface of the workpiece be filled up to get a smooth and bright substrate surface. The surfactant has the function of leveling, brightening and corrosion inhibition.
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2021-03-11 22:50:19
Surfactant is widely used in electroplating process and its mechanism is complex, so far it needs to be studied in depth. But a lot of practice has proved that the adsorption of surfactant not only changes the current distribution on the surface of the plating, fills the micro groove, and reaches the surface flatness, but also changes the potential distribution of the electrode, increases the cathode polarization, promotes the formation of the crystal nucleus and makes the coating grain fine.
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2021-03-10 00:21:43
Surfactants can reduce the interfacial energy of the system, and different types of surfactants can produce electrostatic, solvating or spatially stable anti aggregation effects on the adsorption layer of particles.
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2021-03-07 19:32:59
Defoaming agent is a surfactant, which volatilizes at the gas / liquid interface. It can eliminate foam produced during construction and construction. With the rapid development of the coating industry in China, the variety of coatings is increasing and the grade is constantly upgrading. The high-grade automobile coatings, wood coatings, repair coatings, coil coatings and so on are emerging endlessly. People have higher requirements for decoration and protection of coatings, so defoaming has become a technical measure that must be considered for high-grade products. Defoamer has become an indispensable additive in the current coating process, and it has a considerable proportion in the market of coating aids.
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2021-03-05 01:02:02
Both wetting agent and dispersant are surfactants. Wetting agent plays a role in the wetting process of pigment, which can reduce the interfacial tension between liquid and solid, improve the dispersion efficiency of pigment and shorten the grinding time. Low molecular weight has high wetting efficiency. Dispersants play an important role in the process of pigment dispersion and stabilization. They can be adsorbed on the surface of pigment ions to form charge repulsion and steric hindrance effects, which make the dispersion in a stable state.
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2021-03-02 17:20:43
Due to the action of mechanical force, ceramic glaze slurry will produce a large number of bubbles, which can easily cause glaze defects, such as pores, shrinkage glaze, orange glaze and so on.
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2021-02-28 17:21:31
Surfactants can reduce the interfacial energy of the system, and different types of surfactants can produce electrostatic, solvating or spatially stable anti aggregation effects on the adsorption layer of particles.
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2021-02-25 23:50:08
With the continuous progress of ceramic industry, high-performance and high-quality household ceramics, building and sanitary ceramics, fine ceramics, porous ceramics, superplastic ceramics and nano ceramic composites emerge as the times require, among which ceramic additives play an important role.
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2021-02-24 22:39:54
We will participate in the PCHI exhibition, held on March 24-26, 2021, Shenzhen Convention and Exhibition Center. Welcome to visit our booth Hall 9, #2J53. It would be a great pleasure to meet you at the exhibition, and we expect to establish long-term business relations with your company in t...
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2021-02-23 23:31:12
Alkyl polyglycoside (APG) has a soft effect on the skin, no irritation to the eyes, and a good softening effect on the head. It is widely used in personal care and household detergents, such as shampoo, bath liquid, facial cleanser, hand sanitizer, etc.
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2021-02-21 23:30:19
The synthesis process of polyether amine includes batch process and continuous process. Huntsman's production process is continuous fixed bed process. Using metal catalyst loaded on the carrier, its production equipment and process are advanced, and the catalyst efficiency is high. Therefore, the product has high conversion rate, less side reactions, low production cost and stable performance, but the equipment investment is huge.
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2021-02-18 22:46:08
Polyether amine in the use, it is inevitable that there will be improper operation, this is due to our lack of understanding of it, so the direct way to solve this problem is to understand its basic content, then in the emergency situation will be easier, the next small series for you to briefly introduce its emergency treatment I hope you will know how to deal with these situations in the future.
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2021-02-06 23:58:20
Is it feasible to test the flame retardancy of flame retardant with lighter?
Generally, the common convenient fast key test method for flame retardancy of flame retardants is mainly to use lighters. So is it feasible to test the performance of samples with lighter?
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2021-02-04 17:09:19
Sealant is a kind of sealing material that deforms with the shape of sealing surface and is not easy to flow. It is an adhesive used to fill the configuration gap and play a sealing role. It has the functions of anti leakage, waterproof, anti vibration, sound insulation and heat insulation. It is widely used in construction, transportation, electronic instruments and components sealing. Due to a wide range of sealant, strict operation methods, and poor competition in the market, the sealing effect of sealant is poor. Next, I will analyze the phenomenon and reasons of unqualified sealant.
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2021-02-03 01:03:37
Alkyl glucoside has low surface tension, no cloud point, adjustable HLB value, strong humid power, strong detergency, rich foam, fine compatibility, non-toxic, harmless, no irritation to skin, rapid and complete biodegradation, and can be combined with any type of surfactant, synergistic effect is obvious. It has strong broad-spectrum antibacterial activity, thickening effect is obvious, easy to dilute, no gel phenomenon, easy to use. Moreover, it is resistant to strong alkali, strong acid, hard water and salt.
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2021-02-01 01:00:20
Environmental factors have obvious influence on the curing properties of silicone structural adhesive. The first is the influence of temperature. The higher the temperature, the faster the curing reaction. The phenomenon is that the surface drying and debonding are relatively fast. If the temperature is very low, such as below 5 ℃, the curing of sealant will be very slow.
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2021-01-29 01:15:49
Alkyl polyglycosides can be used in many industries and fields, such as washing industry, cosmetic industry, food processing industry, textile printing and dyeing, pesticide and pharmaceutical industry. As raw materials for non-ionic neutral detergent, alkyl polyglycosides have broad application prospects and can be used as high-grade laundry detergent. In addition, alkyl glycosides have broad-spectrum antibacterial activity against gram negative bacteria, gram positive bacteria and fungi. Therefore, it has more advantages as tableware cleaner, shampoo, skin cleaner and toilet cleaner. Alkyl glycosides can also be used as emulsifier, wetting agent, foaming agent, thickener, dispersant and dustproof agent. In recent years, it has achieved good application effect in pesticide emulsifier.
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2021-01-26 17:03:06
The high surface activity of surfactants is due to the small van der Waals attraction between the molecules. The tension required for the surfactant molecules to move from the aqueous solution to the surface of the solution is small, resulting in a large number of surfactant molecules gathering on the surface of the solution, forming a strong surface adsorption, and this kind of complex not only has a small affinity for water.
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