What is the purpose of Methyltrichlorosilane?
Methyltrichlorosilane is widely used. In the preparation of silicone compounds, it is a key raw material. It can be hydrolyzed and polycondensed to make polysiloxane, which has important applications in many fields.
In the construction industry, the silicone sealant made of polysiloxane has excellent weather resistance, water resistance and adhesion. It is often used to seal building joints to protect buildings from wind and rain erosion and prolong their service life.
In the electronics industry, the silicone material obtained from methyl trichlorosilane through a series of reactions can be used as an insulating packaging material for electronic components. Such materials have good electrical properties and high thermal stability, which can effectively protect electronic components and ensure stable operation of electronic equipment.
In the textile industry, the silicone finishing agent prepared from it can give the fabric a soft and smooth feel, and enhance the waterproof and anti-fouling properties of the fabric, and improve the quality and added value of the fabric.
In the field of coatings, the silicone coating synthesized by methyl trichlorosilane has good heat resistance, corrosion resistance and wear resistance, and is widely used in surface protection of high temperature equipment, chemical facilities, etc.
In addition, in the pharmaceutical, food and other industries, methyl trichlorosilane-derived silicone products are also used, such as pharmaceutical slow-release materials, food packaging anti-stick coatings, etc., showing a variety of uses and important value.
What are the physical properties of Methyltrichlorosilane?
Methyltrichlorosilane is a kind of organosilicon compound. Its physical properties are unique, let me tell you one by one.
Looking at its shape, under room temperature and pressure, methyltrichlorosilane is a colorless and transparent liquid, like a clear spring, clear and pure. It has a pungent smell, just like a sharp arrow, which can quickly stimulate people's sense of smell. This smell is strong and unique, making it easy for people to identify this thing.
When the temperature rises to this point, methyltrichlorosilane is like a bird that breaks free and sublimates from liquid to gaseous. Its melting point is about -90 ° C. In such a low temperature environment, it will condense into a solid state like a sleeping ice sculpture.
Furthermore, the density of methyl trichlorosilane is slightly higher than that of water, like a stable stone, which will slowly sink when thrown into water. It is difficult to dissolve in water, and the two meet, just like oil and water, and will react violently with water, like a raging fire, generating products such as hydrogen chloride gas.
At the same time, it can dissolve in most organic solvents, just like fish entering water. Organic solvents such as ether and benzene can blend with it to form a uniform mixed system.
In addition, the vapor of methyl trichlorosilane is heavier than air, like a thick curtain, which will spread close to the ground, and its vapor and air can mix to form an explosive mixture, which can cause combustion and explosion in case of open flame and high heat energy, like a hidden bomb, which is extremely dangerous.
To sum up, the physical properties of methyl trichlorosilane are unique, and extreme caution is required when using and storing, and strict safety regulations must not be taken lightly.
What are the chemical properties of Methyltrichlorosilane?
Methyltrichlorosilane is also an organosilicon compound. It is active and reacts dramatically in contact with water, such as hydrochloric acid and methylsilanol.
This substance is highly corrosive and can erode most metals and materials. If exposed to air, it is easy to absorb moisture and hydrolyze, and the smoke is significant. This is because it hydrolyzes to produce hydrogen chloride gas.
It is flammable. Under certain conditions, it can explode in case of open flame or hot topic. And steam and air can form an explosive mixture, which will explode in case of fire.
In chemical reactions, methyltrichlorosilane is an important raw material and can be used to make silicone, silicone oil and other silicone products. However, due to its lively chemistry, protection must be taken when using it to avoid contact with water, oxidants, etc. for safety. During operation, strict protective measures should be taken in a well-ventilated place to protect personnel and the environment.
What is Methyltrichlorosilane production method?
Methyltrichlorosilane is an important monomer in the silicone industry, and its preparation methods mainly include heat shrinkage method and direct synthesis method.
The heat shrinkage method uses methyldichlorosilane or methylhydrodichlorosilane as raw materials, and undergoes thermal decomposition reaction under high temperature and catalyst action to generate methyltrichlorosilane. This process requires precise control of temperature, pressure and reaction time, and the raw material cost is quite high. The process is complicated, so it is rarely used in industrial production.
The direct synthesis method is the mainstream method for the current industrial production of methyltrichlorosilane. The method uses silicon powder and chloromethane as raw materials and reacts under specific temperature and pressure conditions under the action of a copper-based catalyst. The reaction equation is: Si + 2CH < unk > Cl → (CH < unk >) ³ SiCl < unk > + (CH < unk >) SiCl < unk > + (CH < unk >) < unk > SiCl + other by-products. The reaction process is carried out in a fluidized bed reactor or a fixed bed reactor. The silica powder needs to have a specific particle size and purity, and the activity and selectivity of the copper-based catalyst have a great influence on the reaction. The reaction temperature is generally maintained between 250-350 ° C, and the pressure is controlled at 0.2-0.5 MPa. The product produced by the reaction is condensed, separated, and rectified to obtain high-purity methyltrichlorosilane. The advantages of the direct synthesis method are that the raw materials are cheap and easy to obtain, the process is relatively simple, and the production efficiency is high, so it is widely used in industrial production.
What Methyltrichlorosilane need to pay attention to when storing and transporting
Methyltrichlorosilane is an organosilicon compound that is corrosive, irritating, flammable and explosive. During storage and transportation, many matters need to be paid attention to.
When storing, the first priority is to choose the environment. It should be placed in a cool, dry and well-ventilated place, away from fire and heat sources, so it is fireproof and explosion-proof. The warehouse temperature should not be higher than 30 ° C, and the humidity should not exceed 80%. Due to high temperature and humidity, its chemical properties are easily unstable. And it should be stored separately from oxidizing agents, acids, alkalis, etc., and must not be mixed to prevent dangerous reactions.
Packaging must be tight, and the containers used must have good corrosion resistance. It is usually made of special steel or plastic drums, which must be tightly sealed to prevent leakage. In the storage area, leakage emergency treatment equipment and suitable containment materials should be provided for emergencies.
When transporting, the transportation vehicle must meet the requirements for the transportation of hazardous chemicals. Drivers and escorts should be professionally trained and familiar with the dangerous characteristics of methyl trichlorosilane and emergency treatment methods. During transportation, the speed should not be too fast, avoid sudden braking, to prevent damage to the packaging. Vehicles should be equipped with corresponding fire fighting equipment and leakage emergency treatment equipment.
When loading and unloading, the operation must be light and light, and it is strictly forbidden to drop, drag and violent vibration to avoid leakage caused by package rupture. In the event of a leak, surrounding personnel should be quickly evacuated to a safe area, and fire should not be allowed to approach. Emergency responders need to wear protective clothing and gas masks to properly collect and handle leaks.
The storage and transportation of methyl trichlorosilane is related to safety at every step. It must be operated in strict accordance with regulations and must not be sloppy at all, so as to ensure the safety of personnel and the environment.