PAG (Polyalkylene Glycol) polyether is a commonly used solvent and lubricant, mainly composed of polyethylene oxide and propylene oxide. Polyether has good solubility and lubricity, and is widely used in fields such as coatings, plastics, rubber, electronics, and automobiles.
The molecular weight and structure of polyether have a significant impact on its properties. Generally speaking, the larger the molecular weight, the higher the viscosity of polyether, and the poorer its solubility and lubricity. Structurally, the chain length and branching degree of polyether also affect its performance. The longer the chain length, the better the solubility and lubricity of the polyether, but the higher the viscosity. The greater the branching degree, the better the solubility and lubricity of the polyether, but the higher the viscosity.
There are two main methods for preparing PAG polyether: one is through the polymerization reaction of oxidized alcohol, and the other is through the dehydration reaction of alcohol. Among them, the type of alcohol and reaction conditions have a significant impact on the properties of polyether.
When using PAG polyether, attention should be paid to its chemical stability, thermal stability, toxicity and other properties. Generally speaking, PAG polyether has good chemical stability and is not easily reactive with most substances. However, PAG polyether will decompose at high temperatures, so temperature control is necessary when using it. In addition, PAG polyether also has certain toxicity, and safety precautions should be taken when using it.