What are the main uses of N-Dodecylmethyldiethoxysilane?
N-dodecyl methyl diethoxysilane is also one of the organosilicon compounds. Its main use is more common in the fields of chemical industry and materials.
At the end of the surface treatment of the material, this compound has remarkable functions. The cover contains siloxane groups because of its molecular structure, which can chemically react with the hydroxyl groups on the surface of the material to form a strong chemical bond, and then construct a siloxane film on the surface of the material. This film has excellent hydrophobicity. If applied to building materials, such as stone, bricks and tiles, it can make the surface waterproof, resist the penetration of rainwater, reduce the damage of erosion, and extend the service life of the material. And this film can also increase the wear resistance and corrosion resistance of the material. When treating the surface of metal materials, it can prevent oxidation and corrosion, and maintain the luster and strength of the metal.
In the paint and ink industry, N-dodecyl methyl diethoxysilane is also an important additive. Adding to the coating can change the leveling and wettability of the coating, make the coating spread evenly on the surface of the coated object, form a smooth film, and improve the quality and appearance of the coating. At the same time, it can increase the adhesion between the coating and the substrate, make the coating not easy to peel off, and strengthen the protective properties of the coating. Adding to the ink can change the printability of the ink, make the ink transfer evenly, clear graphics, and increase the wear resistance and water resistance of the ink.
In addition, in the field of adhesives, this compound can be used as a coupling agent. With its special structure, one end can be combined with the organic polymer in the adhesive, and the other end can interact with the surface of the adhesive to enhance the bonding force between the adhesive and the adhesive, improve the bonding strength and durability, and is widely used for bonding of different materials such as wood, plastic, and metal.
What are the physical properties of N-Dodecylmethyldiethoxysilane?
N-dodecyl methyl diethoxysilane is a kind of organosilicon compound. Its physical properties are unique and of great research value.
Under normal temperature, it is mostly colorless and transparent liquid, with pure texture, no obvious impurities, and clear appearance. This state is convenient for the operation and application of many industrial processes. It is easy to mix with other substances because of its good fluidity.
When it comes to density, it is between about 0.88 and 0.92g/cm ³. This density value indicates that it is similar to the density of common organic solvents, which is of great significance in solution preparation and solubility. In many chemical processes, it can be well integrated with specific solvents, which is helpful for the full progress of the reaction.
The boiling point is usually in the range of 260-280 ° C. The higher boiling point shows that its thermal stability is quite good, and it is not easy to evaporate in a relatively high temperature environment. It can be used in processes that require high temperature treatment, such as the preparation of some high temperature curing coatings or composites.
The flash point is about 100 ° C. This is a key indicator to pay attention to in safe operation. It indicates that the substance has a latent risk of initiating combustion under certain temperature conditions when exposed to open flames or hot topics, so it needs to be strictly followed when storing and using.
In terms of solubility, N-dodecyl methyl diethoxysilane is soluble in most organic solvents, such as toluene, xylene, acetone, etc. This property makes it widely used in coatings, adhesives and other fields, and can be fully miscible with various resins, additives, etc., to optimize product performance. At the same time, it is insoluble in water, and when it comes into contact with water, a hydrolysis reaction will occur to generate corresponding silanol and ethanol. This hydrolysis property can be cleverly used in the surface modification process of specific materials to enhance the bonding force between materials and other substances.
Is N-Dodecylmethyldiethoxysilane chemically stable?
N-dodecyl methyl diethoxy silane, its chemical properties are quite stable. This substance contains siloxane groups. In many environments, the siloxane bond can resist the intrusion of external factors by virtue of its special structure.
At room temperature and pressure, N-dodecyl methyl diethoxy silane is relatively stable and is not easy to react spontaneously with common substances. In case of high temperature, or under the action of a specific catalyst, its siloxane bond may undergo hydrolysis or alcoholysis. During hydrolysis, the siloxane bond interacts with water to release ethanol and form a siloxane group at the same time.
In organic solvents, the substance has good solubility and can be miscible with many organic solvents to form a homogeneous system. This property makes it widely used in coatings, adhesives and other fields. Because of its stable chemical properties, it can be used as a surface modifier, and the surface of the material treated by it can obtain special properties such as hydrophobicity. This is because the long chain structure of dodecyl groups is aligned on the surface of the material to form a hydrophobic layer. In terms of storage, as long as it avoids conditions such as water, high temperature and strong acid and alkali, the substance can maintain stability for a long time and does not easily deteriorate. In short, N-dodecyl methyl diethoxysilane plays an important role in many industrial and scientific research fields due to its own stable chemical properties.
N-Dodecylmethyldiethoxysilane what are the precautions during use
For N-dodecyl methyl diethoxy silane, there are various precautions to be paid attention to when using it.
First, this substance has a certain chemical activity, and caution is required when contacting it. When using it, ensure that the operating environment is well ventilated. If the ventilation is poor, its volatile gas will accumulate in one place, or cause changes in air composition, affecting the health of the operator, and may also have potential safety risks due to concentration accumulation.
Second, because it is an organosilicon compound, it may have special effects on certain materials. If it is used for surface treatment, the characteristics of the material to be treated should be carefully observed. If the material is incompatible with the silane, it will not only fail to achieve the expected treatment effect, but also damage the surface of the material, causing its appearance and performance to deteriorate.
Third, you should also pay attention to storage. It should be placed in a cool, dry place, away from fire and heat sources. If the temperature is too high, it may cause its chemical properties to change, accelerating decomposition or deterioration. And avoid mixing with water and strong acid and alkali substances. Because it contains ethoxy groups, it is easy to hydrolyze in case of water, and chemical reactions will occur in case of strong acids and alkalis, which will affect the quality and use efficiency.
Fourth, it is recommended to use appropriate protective equipment during operation, such as gloves, goggles, etc. Once accidentally touching the skin or eyes, rinse with plenty of water immediately. If the situation is serious, seek medical treatment as soon as possible. In this way, when using N-dodecyl methyl diethoxy silane, it can be safe and achieve good use results.
What is the production process of N-Dodecylmethyldiethoxysilane?
The process of preparing N-dodecyl methyl diethoxy silane is quite complicated and requires fine operation. The method is roughly as follows:
First take dodecyl chloride and use it as the starting material. Place this in the reaction kettle and add an appropriate amount of organic solvent, such as toluene, to make the system uniform and conducive to the reaction.
The second time is to add metal magnesium, which is a key step and needs to be protected by low temperature and inert gas. It is common to fill the kettle with nitrogen to drive out the air and avoid side reactions. Magnesium reacts with dodecyl chloride to generate dodecyl magnesium chloride. This step is violent, and the temperature must be properly controlled to avoid a sudden rise in temperature and damage to the product.
After the Grignard reagent is made, slowly drop into the methyldiethoxysilane. This process also needs to be cautious, because the reaction of the two is active, and the dripping speed must be stable, so that the reaction is gradual. After adding it, the temperature is raised to an appropriate temperature, usually between 50 and 70 degrees Celsius, and the reaction is sufficient when maintained for a few days.
After the reaction is completed, the product contains unreacted raw materials, by-products and targets. First, it is distilled under reduced pressure to remove low-boiling point impurities, such as unreacted solvents and some starting materials. Then, it is finely separated by silica gel column chromatography to obtain pure N-dodecyl methyldiethoxysilane. In silica gel column chromatography, the appropriate eluent is selected. According to the polarity of the product, petroleum ether and ethyl acetate are often mixed in a specific ratio to separate the products one by one, and high-purity N-dodecyl methyl diethoxy silane is finally obtained.