Uses of fluorine-containing sulfonate salt as flame retardant in polyester PET, and flame retardant composition comprising same

Abstract

The invention provides applications of fluorine-containing sulfonate as a flame retardant in polyester PET, and a flame-retardant composition containing the fluorine-containing sulfonate. According tothe invention, a compound containing fluorine and sulfur (preferably perfluorosulfonate) and a DOPO flame retardant take a synergistic effect on fire retardation of PET; and the flame-retardant composition comprises a compound containing fluorine and sulfur and a DOPO flame retardant, can be used as a PET flame retardant, and enables flame-retardant PET to have excellent molten drop resistance and excellent flame retardance under the condition of maintaining good spinning capability.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to the use of perfluorosulfonate as a flame retardant in polyester PET and a flame retardant composition containing it. Background technique [0002] Polyethylene terephthalate (PET) is a polymer compound obtained by esterification and polycondensation of terephthalic acid (PTA) and ethylene glycol (EG). [0003] PET polyester fiber is widely used in many fields such as clothing, cloth, toy stuffing, bedding, etc. However, due to the flammability of polyester fiber itself, once a fire occurs, it will bring great damage to life and property, so poly The research on the flame retardancy of ester fiber has attracted worldwide attention. Moreover, the melt drips during the burning process, which will cause the fire spread of the molten fiber or cause burn damage. Flame retardants are added to the polymer material PET to enhance the flame retardant properties of the polymer. [0004] ...

AI Technical Summary

Problems solved by technology

[0004] Chinese patent 02109909.X reports a production method of flame retardant polyester: after the esterification of terephthalic acid and ethylene glycol, add 2-carboxyethyl (phenyl) phosphinic acid and ethylene glycol 1: 1 (molar ratio) The prepared liquid is polycondensed to obtain flame retardant polyester. In this patent, the amount of flame retardant is large, and the flame retardant performance is unstable. Achievable effect

[0005] Chinese patent CN106633999A reports a flame-retardant PET material: it includes the following groups in terms of parts by mass: 50-60 parts of thermoplastic elastomer, 25-40 parts of polyethylene terephthalate, 2.3-4.1 parts of phenyl silicone oil 12-18 parts of fluorine rubber, 8-15 parts of nano-titanium nitride, 3.5-6.8 parts of stearic acid, 4-10 parts of calcium carbonate, 1.8-3.9 parts of active zinc oxide, 5-12 parts of aluminum hydroxide, using After the above formula, the patented flame-retardant PET material has simple operation and low cost, and the obtained flame-retardant PET has a stable structure, and even if it is partially damaged, it will not affect the overall flame-retardant performance. However, the patent does not mention the limit Oxygen index, and does not mention what the fire rating can achieve;

[0006] Chinese patent CN101787579A, a flame-retardant polyester fiber and its preparation method and device, discloses a flame retardant as decabromodiphenyl ether, decabromodiphenylethane, tetrabromobisphenol A, red phosphorus or triphenyl phosphate One or a mixture of esters, and the flame retardant additive is one or a mixture of antimony trioxide, zinc borate, hydrated aluminum oxide, hydrated magnesium oxide, silicon powder or expanded graphite; the patent The amount of flame retardants and flame retardant additives used in the paper is relatively large, and the fire protection level is not mentioned

Images