Shanghai Liuyuan Trading Co. , Ltd. , https://www.ly-weighing.com
Sinopec Tianjin Branch uses polyethylene glycol, adipic acid, zinc oxide, and DMT as raw materials to synthesize a new type of polyester antistatic agent through a two-step reaction. The first step reaction is the reaction of polyethylene glycol, adipic acid and zinc oxide to form the esterification product of polyethylene glycol and adipic acid salt; the second step reaction is the exchange of polyethylene glycol esterified product with DMT and glycol ester. The resulting BHET undergoes a polycondensation reaction to form a product, namely a macromolecular heteropolar polyester antistatic agent. The process for preparing antistatic agents is simple and similar to that of pure PET. The antistatic agent has a high melting point, greater than 240°C, and the screw will not slip when blended. The amount of incorporation is small, and the antistatic effect is good; after adding 2% to 3% of antistatic agent, the surface charge density of the knitted fabric is only 0.1-0.3μC/m2, much smaller than the average polyester sample (average 5.2μC/m2). It has good spinnability, smooth spinning, and good fiber formation.
Heteropolar Macromolecular Polyester Antistatic Agent Developed Successfully
Polyester is a widely used synthetic fiber. Its molecular structure is highly symmetric and its phenylene bond is rigid. Therefore, it has the disadvantages of hydrophobicity, hard-to-dye, easy to generate static electricity, and flammability. Therefore, eliminating or reducing the static electricity of polyester has become an important issue for research.