| The aim of this work is to produce a permanent anti-static polyester fiber. A new kind of ploy (ether-ester) anti-static agent is developed, in main chain of the copolymer metal atoms are located. This copolymer is blend spun with PET chips; the blended permanent anti-static fiber is obtained.Solubility, IR, and measurement of acid value characterize the structure of the copolymer. The experiments show those dualistic aliphatic acids, metal oxide (MeO), polyethylene glycol ( PEG), react step by step then the target material (PM) can be produced. The lower the molecular weight of the row materials the easier the reaction goes on. Different mole ratio of the reactants brings different end groups of the product. The optimal conditions are obtained the semi-finished product (PM) react with BHET the poly (ether-ester) (PEEM) is gained. The weight loss in boiling water is less than 1%. The melting point, crystallization point and intrinsic viscosity are measured. While the molecular weight of PM is constant, the more the PM added, the melting point and crystallization temperature of the PEEM are the lower. The kinematics of polycondensation is studied. The optimal reaction temperature is about 270 (℃).The friction static voltage, specific resistance of blend spinning PET and PEEM fiber is better than that blend PET and PEE spinning anti-static fiber. Even in very low humidity (less than 30%) the anti-static property is also perfect. The study of anti-static mechanism indicates that for this kind fiber interior discharge is the main reason. Along with the increase of humidity the moisture absorption of the fiber increase. However, the anti-static property keeps constant.When 3.5%(wt %) PEEM is used to be blend spun with PET chips, its spinnability is good. And the result filament posses good drawing and mechanic properties. (Such as tenacity, modulus, elongation etc.). It is satisfied for the use in textile industry. This kind fiber has a bright foreground for industrial production.
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