Flame-retardant polyester fiber and its preparation method
AssigneeJiangsu Hengli Chemical Fibre Co., Ltd.
InventorsLili Wang, Lixin Yin, Qianhan Liu, Feng Li
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Abstract
A flame-retardant polyester fiber obtained by spinning flame-retardant polyester and irradiating with ultraviolet light and having a limiting oxygen index value of greater than 30. Flame retardant 2-carboxyethylphenylphosphinic acid to improve the flame retardant properties of polyester, the use of polyester containing unsaturated double bond in UV irradiation, the double bond opens to form a crosslinking point, the formation of a certain amount of the network structure improves the heat-resistant temperature of the poly-fiber and improves the anti-dripping performance of the polyester fiber.
Claims2
A flame-retardant polyester fiber,
- wherein the flame-retardant polyester fiber is produced by spinning a flame-retardant polyester and subjecting the flame-retardant polyester to UV irradiation,
- wherein the flame-retardant polyester fiber has a maximum oxygen index value greater than 30, wherein the flame-retardant polyester is produced by an esterification reaction of terephthalic acid, unsaturated dibasic acid and ethylene glycol;
- followed by adding flame-retardant 2-carboxyethyl phenyl phosphonic acid ethylene glycol ester, and followed by a polycondensation catalyzed by a mixture of magnesium ethylene glycol and antimony ethylene glycol;
- wherein, in the flame-retardant polyester, a macromolecular chain of the flame-retardant polyester contains an average of 1 to 6 unsaturated double bonds provided by the unsaturated dibasic acid molecules;
- wherein the formula of the magnesium ethylene glycol is Mg(OCH2CH2OH)2.
Dependencies are inferred from the claim text.