Application Case

Polyethylene glycol (PEG) is prepared by the stepwise addition reaction of ethylene oxide with water or ethylene glycol as raw materials, and its raw materials mainly come from petroleum products. As the degree of polymerization increases, the physical appearance and properties of polyethylene glycol change gradually. From a colorless, odorless viscous liquid to a waxy solid, its hygroscopic capacity is correspondingly reduced. It has the chemical properties of alcohol and can be esterified to form esters with fatty acids. Soluble in water, ethanol and many organic solvents. Stable to heat, acid and alkali, and does not work with many chemicals. It has good hygroscopicity, adhesion and lubricity. Non-toxic, non-irritating.

Polyethylene glycol has a strong water absorption, can absorb water from the air under normal temperature conditions, liquid can be miscible with water in any proportion, when the temperature rises, any grade of solid polyethylene glycol can be miscible with water in any proportion, when the temperature is high to the boiling point of water, the polymer will precipitate out, precipitation temperature depends on the molecular weight and concentration of the polymer.。

Polyethylene glycol is a non-ionic polymer, under normal conditions is stable, at 120 ° C or higher temperatures can oxidize with oxygen in the air, with carbon dioxide or nitrogen and other inert gas protection, at 200~240 ° C does not change, when it rises to about 300 ° C, the molecular chain is broken and degraded.

In the textile industry, polyethylene glycol can be used as a spinning aid, a sizing component, a solvent and a dispersant for dyeing operations. Solid powder polyethylene glycol has good film forming properties, lubrication and plasticity, used to treat fiber additives, can make fabrics soft, plasticized and refined, can inhibit the accumulation of static electricity.

Polyethylene glycol reacts with isocyanate to produce linear polymer, which is used as fabric finishing agent to make the fabric smooth, soft, elastic, feel full, and enhance the tear strength, wear resistance, antistatic and antifouling ability. Polyethylene glycol is especially widely used in the textile industry. It is mainly used as detergent, softener, lubricant, anti-depressant, dispersant, dye carrier, air conditioner and finishing agent.