A solvent is a liquid that can dissolve solid, liquid, or gas solutes and then become a solution,
Solvents usually have a relatively low boiling point and are easily volatile. Alternatively, it can be removed by distillation, leaving behind the dissolved substance. Therefore, solvents cannot react chemically with solutes. Solvents are usually transparent, colorless liquids, and most of them have a unique odor.
The concentration of a solution depends on the amount of substance dissolved in the solvent. Solubility refers to the maximum amount of substance that a solvent can dissolve at a specific temperature. Organic solvents are mainly used for dry cleaning (such as tetrachloroethylene), paint thinner (such as toluene, Turpentine), nail washing water or glue removal (such as acetone, methyl acetate, ethyl acetate), rust removal (such as hexane), Dishwashing liquid (lemon essence), perfume (alcohol) and chemical synthesis.
Traditionally, gases and solids are called solutes, while liquids are called solvents. For a solution composed of two liquids, the components with higher content are usually referred to as solvents, while the components with lower content are referred to as solutes. It is divided into two categories: inorganic solvents and organic solvents. Water is the most widely used inorganic solvent, while alcohol, gasoline, chloroform, and acetone are commonly used organic solvents.
The concentration of a solution depends on the amount of substance dissolved in the solvent. Solubility refers to the maximum amount of substance that a solvent can dissolve at a specific temperature. Organic solvents are mainly used for dry cleaning (such as tetrachloroethylene), paint diluents (such as toluene, Lacquer thinner, pine perfume and Turpentine), nail washing water or glue removal (such as acetone, methyl acetate and ethyl acetate), rust removal (such as hexane), Dishwashing liquid (lemon essence), perfume (alcohol) and chemical synthesis.
Solvent action
Solvents play a significant role in adhesives, some of which serve as a medium for polymerization reactions, easing the reaction and making the temperature easy to control; Some are used to purify monomers and additives; Some are used to dissolve the base material as a component of the adhesive; Some are used for olefin release adhesives to reach a certain viscosity, which is conducive to wetting and facilitates coating construction; Some are used to regulate the evaporation rate of adhesives; Some are used to prevent gel from increasing storage stability, and some are used as surface cleaning agents before bonding; Some are used to directly bond certain thermoplastic products; Some can be used to reduce costs and improve efficiency.
Selection solvents
Choosing a suitable solvent is very important, and multiple factors should be considered comprehensively, such as solubility, volatilization rate, safety, economy, source, and storage stability. A good solvent must have good solubility, which can be determined by solubility parameters and hydrogen bond index. The drying rate of adhesives is directly related to the volatilization rate of solvents. Solvent based adhesives should ultimately evaporate all solvents, and it is generally hoped that the adhesive will dry quickly. Therefore, it is necessary to choose a solvent with a lower boiling point.
Most organic solvents are easily combustible, and when the solvent vapor reaches a certain concentration in the air, it can explode. It is necessary to pay attention to the safety of the solvent. Most organic solvents have certain toxicity, are harmful to human health, and pollute the ecological environment, which should be given sufficient attention. Solvents account for a large proportion in solvent based adhesives, so cost considerations should not be ignored, and cheap and easily available solvents should be used as much as possible first.
Hot Tags: textile fabric dye solvent orange 62, China, manufacturers, suppliers, factory, cheap, discount, quotation, low price, free sample
