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[Chemical Knowledge]：Styrene: a widely used synthetic material

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Styrene, chemical formula C8H8, is an organic compound, which belongs to aromatic compounds. It is a colorless and transparent liquid with a strong sweet and aromatic smell at room temperature. Styrene is widely used in the chemical industry, especially as a synthetic material, and its application areas include plastics, fibers, coatings, rubber and building materials.

preparation method

styrene common preparation methods are catalyst method, distillation method and hydrogenation method. The catalyst method is one of the most commonly used methods for the preparation of styrene. First, benzene and ethylene are used as raw materials, and air is introduced under heating conditions. Through the catalytic action of the catalyst, benzene and ethylene are reacted to generate styrene. The distillation method is to extract styrene from petroleum cracking gas oil by distillation. The hydrogenation law is to react styrene with hydrogen to obtain cyclohexane and methylcyclohexane, and styrene is separated by distillation.

characteristics

Styrene is a material with good physical and chemical properties. It is a liquid with good fluidity, which can evaporate into gaseous molecules at normal temperature and pressure, and can even reach the freezing point at the temperature of liquid nitrogen. Styrene has a compact molecular structure, strong rigidity, excellent mechanical properties, chemical stability and electrical insulation properties.

applications

styrene as a synthetic material, is widely used in various products. The following are the main areas of application of styrene:

1. plastic products: styrene is the raw material for the manufacture of polystyrene (PS), polystyrene has a wide range of applications, can be used in electrical appliances, electronics, home appliances, toys and tableware and other products.

2. Cellulose products: styrene can be copolymerized with methyl acrylate to form polystyrene-methyl acrylate copolymer modified polypropylene fiber. This fiber has the characteristics of softness, wrinkle resistance and good elasticity, and can be used in clothing, footwear, luggage and other products.

3. coating products: styrene through the polymerization of the polymer, can be used as solvent-based coatings, water-based coatings, electrical paint, automotive coatings, coating has good weather resistance, adhesion, strength and other properties.

4. building materials: styrene can be used in the manufacture of insulation materials, sound insulation materials, waterproof materials, adhesives and other building materials.

styrene as an important synthetic material, its application in various fields is more and more extensive, its future development prospects are also very broad.