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  • Improvement of Coal Particle Wettability by Using Surfactant Aqueous Solution

    2019-09-11 17:02:55
    Using surfactant aqueous solution to improve the wettability of coal particles has important practical significance for the control of coal dust. Non-ionic surfactants, such as sodium o-xylene alkyl sulfonate, have been used in this field. Glanville et al. discussed various factors affecting the wetting rate of coal dust. The results showed that the wetting rate measured by Walket wetting rate experiment was mainly affected by the size composition of temperature coal dust, the concentration and molecular structure of the special surfactant used. In the temperature range of 10 40 C. The wetting rate increases linearly with the increase of temperature. Similarly, at a specific temperature, the wetting rate also shows a linear relationship with the increase of the average particle size of coal dust. To be careful
  • What are the effects of surfactants containing nitrogen and phosphorus?

    2019-09-09 09:05:59
    Surfactant adsorbs at the gas-liquid interface to form an adsorptive film. For example, a frictionless movable floating sheet is placed on the interface to push the adsorptive plasma membrane along the solution surface. The membrane produces pressure on the floating sheet. This pressure is called surface pressure. Surface Viscosity: Like surface pressure, surface viscosity is a property of insoluble molecular membranes.
  • Silicone rubber plane sealant is widely used

    2019-09-06 09:03:38
    Sealant is a kind of sealing material which is deformed with the shape of sealing surface and is not easy to flow. It is an adhesive used to fill the gap between configurations and act as a sealant. It has the functions of leak proof, waterproof, vibration proof, sound insulation and heat insulation. Usually asphalt, natural resin or synthetic resin, natural rubber or synthetic rubber and other dry or non-dry viscous substances are used as binders, with talcum powder, silica, titanium dioxide and asbestos inert fillers, followed by plasticizers, solvents, curing agents, accelerators and so on. It can be divided into three categories: elastic sealant, liquid sealing gasket and sealing putty. It is widely used in building, transportation, electronic instruments and parts sealing.
  • What are the important applications of silicone sealants in engineering?

    2019-09-04 08:59:44
    The main structure of polyurethane sealant is carbamate formed by the reaction of isocyanate and active hydrogen. It is characterized by good adhesion to various substrates, excellent toughness, good sealing performance, water and gas insulation. But the performance is poor at high temperature and humidity. Silicone sealant has a structure of siloxane as the main chain, side chain or end group with functional groups, which plays a role in polymerization. Its characteristics are UV aging, thermal aging performance is very stable. But the bonding performance and sealing performance are poor.
  • What is the effect of aluminium hydroxide flame retardant on cable fire retardant coatings?

    2019-09-02 00:00:00
    In the guess of cable fire-proof coating, the technical path of taking part in aluminium hydroxide flame retardant is selected, so that when the developed cable fire-proof coating is obtained, the coating expands and foams well and densely, forming a fine and uniform fire-proof insulation layer, which can provide useful fire-proof maintenance for the cable. But when the content of aluminium hydroxide flame retardant is 7%, the cable fire retardant coating not only has good fire protection function, but also has outstanding physical and chemical function and clothing resistance function.
  • There are many ways to classify different types of surfactants

    2019-08-30 18:16:58
    At present, chemical flooding is the main method of tertiary oil recovery in China. Surfactants are suitable for chemical flooding. On the basis of practical work experience, many experts and scholars have put forward the following requirements for surfactant in oilfields:
  • What are the important applications of silicone sealants in engineering?

    2019-08-29 10:24:06
    The main structure of polyurethane sealant is carbamate formed by the reaction of isocyanate and active hydrogen. It is characterized by good adhesion to various substrates, excellent toughness, good sealing performance, water and gas insulation. But the performance is poor at high temperature and humidity.
  • What is the effect of aluminium hydroxide flame retardant on cable fire retardant coatings?

    2019-08-28 10:18:58
    In the guess of cable fire-proof coating, the technical path of taking part in aluminium hydroxide flame retardant is selected, so that when the developed cable fire-proof coating is obtained, the coating expands and foams well and densely, forming a fine and uniform fire-proof insulation layer, which can provide useful fire-proof maintenance for the cable. But when the content of aluminium hydroxide flame retardant is 7%, the cable fire retardant coating not only has good fire protection function, but also has outstanding physical and chemical function and clothing resistance function.
  • A Brief Talk on Surfactant as the Main Active Component of Waste Paper Deinking

    2019-08-27 09:36:52
    According to the characteristics of surfactants, 9 types of surfactants were selected, 7 of them were selected and deinking experiments were carried out with a single surfactant. Five compounds with better effect were selected. The optimum formulation 3 was studied by orthogonal experiment. The optimum technological conditions were A3B2C1D3 with pulp consistency of 9%, deinking agent dosage of 0.8%, deinking temperature of 50 C, deinking time of 50 min and brightness of Newsprint Pulp of 56.1% after deinking.
  • New non-ionic surfactants emerging in recent years

    2019-08-26 09:33:30
    Aliphatic alcohol sodium sulfate (AS) is commonly known as K12 in China. Its hydrophobic group is lauryl alcohol or coconut oil alcohol. AS has excellent emulsification, foaming, penetration, decontamination and compatibility, and is an important anionic surfactant of alcohol series. The specifications are powder, needle and liquid, and the varieties are different from sodium salt and ammonium salt (ASA). In liquid washing, AS is often used with AES to make the formulation system more mild and foam richer. AS alone has less detergency than AES, but it is easier to form than AES when used in powder detergent products. Ammonium salts are less irritating and milder than sodium salts. They are often used with AESA in shampoos, shower gels and hand sanitizers.
  • What are the characteristics of the surfactants used in green detergents?

    2019-08-23 09:11:16
    The surfactants used in green detergents should be non-toxic, safe, non-hazardous, biodegradable and renewable green surfactants. Common surfactants that meet this requirement and have been commercialized are alkyl glucoside (APG), sodium fatty acid methyl ester sulfonate (MES), sodium fatty alcohol polyoxyethylene ether carboxylate (AEC), sodium aliphatic alcohol polyoxyethylene ether sulfate (AES), sodium aliphatic alcohol sulfate (AS), aliphatic alcohol polyoxyethylene ether (AE), fatty acid methyl ether. Ester ethoxylates (MEE), coconut oil amide propyl betaine (CAB), etc.
  • Use Surfactant as Cleaning Agent in Cleaning Solution

    2019-08-22 11:07:44
    The application principle of surfactant in water-based metal cleaning agent is to weaken or offset the adhesion of oil contamination on metal surface by the properties of wetting, penetrating, emulsifying, dispersing and solubilizing of surfactant, and to accelerate oil contamination from metal surface to be emulsified, dispersed and suspended in lotion by mechanical and physical methods. Solubilizing micelles.
  • The role of high-quality surfactants in solution

    2019-08-21 10:41:06
    The dilute solution of surfactant obeys the rule of ideal solution. The amount of surfactant adsorbed on the surface of the solution increases with the increase of the concentration of the solution. When the concentration reaches or exceeds a certain value, the amount of adsorbed surfactant no longer increases. These excessive surfactant molecules are disorderly or exist in a regular way in the solution. Practice and theory show that they form associations in solution, which are called micelles.
  • What are the places where silicone structural glue is used in decoration?

    2019-08-20 10:05:14
    Despite the use of silicone structural glue in decoration is relatively small, but its quality and performance can not be ignored. After decoration, due to poor quality of sealant or improper use of the loss caused by a small number of families, here to remind you.
  • Which sealant is more suitable for gas stove sealant?

    2019-08-19 17:20:29
    Sealant is a kind of sealing material which is deformed with the shape of sealing surface and is not easy to flow. It is an adhesive used to fill the gap between configurations and act as a sealant. It has the functions of leak proof, waterproof, vibration proof, sound insulation and heat insulation.
  • Polysulfur sealant is a liquid polysulfide rubber as the main material.

    2019-08-16 15:01:41
    There are many kinds and types of sealants, and different sealants have different properties and different uses. Polysulfur sealant is one of them. Polysulfur sealant is a kind of sealant made of liquid polysulfide rubber as the main material, with tackifier, vulcanizing agent, accelerator and reinforcing agent. This kind of sealant has excellent properties of fuel-resistant oil, hydraulic oil, water and various chemicals, as well as heat resistance and atmospheric aging resistance. Is polysulfide sealant toxic?
  • Most buildings need sealants to seal and fill

    2019-08-15 11:12:55
    Sealant is a kind of sealing material which is deformed with the shape of sealing surface and is not easy to flow. It is an adhesive used to fill the gap between configurations and act as a sealant. It has the functions of leak proof, waterproof, vibration proof, sound insulation and heat insulation. It can be roughly divided into silicone, polyurethane, polysulfide, acrylic acid, butyl, asphalt and oil resin modified products. Sealants for construction mostly belong to synthetic adhesives. The main body of sealants is polymer. Their properties can be divided into three categories: bulk properties, process properties and use properties.
  • Nanotechnology of nano-scale flame retardants has attracted much attention in recent years.

    2019-08-14 17:25:53
    Through the continuous efforts of researchers, some new flame retardants have been developed to meet the market demand for flame retardants. Intumescent flame retardant is a new type of composite flame retardant system which has attracted much attention in recent years. Because of its unique flame retardant mechanism and halogen-free, low smoke and low toxicity, it meets the requirements of the times for protecting the ecological environment. There is no doubt that this type of flame retardant is an important way to halogenate flame retardants.
  • Comparisons of different surfactants

    2019-08-13 15:37:59
    Food emulsifier is a kind of food additive which can make the complementary and miscible liquid into uniform dispersed phase (emulsion). A small amount of food emulsifier can significantly reduce the interfacial tension between oil and water and produce emulsifying effect. Surfactants, known as "industrial monosodium glutamate", refer to substances with fixed hydrophilic and lipophilic groups, which can be aligned on the surface of the solution and can significantly reduce the surface tension. It is a large group of organic compounds. Their properties are very unique, and their applications are very flexible and extensive. They have great practical value and theoretical significance. A surfactant used in food emulsifiers.
  • Why should polyether amine be used as raw material for epoxy flooring

    2019-08-12 15:41:09
    More and more users are beginning to use polyether amine as raw material, not only because of its performance advantages, but also because it can really fit the application of products, thus achieving a kind of icing on the cake effect. I have to say, its benefits are really too many and too many. Next, let's briefly analyze it. Why should epoxy flooring be used as its raw material? Let's learn from Xiaobian.
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