Flame retardant polyester fiber and preparation method thereof
A flame-retardant polyester and fiber technology, applied in the field of flame-retardant fibers, can solve the problems of high cost, inability to balance mechanical properties and flame-retardant properties, and achieve low cost, good mechanical properties and flame-retardant properties, and less additives Effect
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Embodiment 1
[0030] A kind of flame-retardant polyester fiber, its preparation process is:
[0031] (1) In terms of parts by mass, 93 parts of polyethylene terephthalate, 1.4 parts of melamine cyanurate, 0.3 parts of graphite-like carbon nitride, 0.3 parts of zinc sulfide and 5 parts of 9,10-bis Hydrogen-9-oxa-10-phosphaphenanthrene-10-oxide derivatives were melt blended to prepare flame-retardant polyester chips, in which, 9,10-dihydro-9-oxa-10-phosphaphenanthrene- The structural formula of the 10-oxide derivative is:
[0032]
[0033] (2) Dry and pre-crystallize the flame-retardant polyester chips. The process is as follows: firstly, the temperature is raised from 25 °C to 100 °C at a rate of 5 °C / min, and the temperature is kept for 10 hours. Cool to 25°C;
[0034] (3) Melt spinning and drawing and winding are carried out to obtain flame-retardant polyester fibers. The temperature of melt blending is 275°C, the temperature of melt spinning is 280°C, and the speed of drawing and win...
Embodiment 2
[0037] A kind of flame-retardant polyester fiber, its preparation process is:
[0038] (1) In parts by mass, 92 parts of polyethylene terephthalate, 2 parts of melamine cyanurate, 0.5 part of graphite-like carbon nitride, 0.5 part of zinc diethylphosphinate and 5 parts of 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide derivatives were melt-blended to prepare flame-retardant polyester chips, wherein, 9,10-dihydro-9-oxa-10 - The structural formula of phosphaphenanthrene-10-oxide derivatives is:
[0039]
[0040] (2) Dry and pre-crystallize the flame-retardant polyester chips. The process is as follows: firstly, the temperature is raised from 20 °C to 109 °C at a rate of 7 °C / min, and the temperature is kept for 10 hours. Cool to 20°C;
[0041] (3) Melt spinning and drawing and winding are carried out to obtain flame-retardant polyester fibers. The temperature of melt blending is 260°C, the temperature of melt spinning is 270°C, and the speed of drawing and winding is 30...
Embodiment 3
[0044] A kind of flame-retardant polyester fiber, its preparation process is:
[0045](1) In parts by mass, 95 parts of polytrimethylene terephthalate, 1 part of melamine cyanurate, 0.5 part of graphite-like carbon nitride, 0.5 part of 2-carboxyethylphenyl phosphinate zinc and 3 parts of 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide derivatives were melt-blended to prepare flame-retardant polyester chips, wherein 9,10-dihydro-9-oxa The structural formula of -10-phosphaphenanthrene-10-oxide derivatives is:
[0046]
[0047] (2) Dry and pre-crystallize the flame-retardant polyester chips. The process is as follows: firstly, the heating rate is raised from 15°C to 115°C at a rate of 9°C / min, and the temperature is kept for 10 hours. Cool to 15°C;
[0048] (3) The flame retardant polyester fiber is obtained by melt spinning and drawing and winding, the temperature of melt blending is 270°C, the temperature of melt spinning is 280°C, the speed of drawing and winding is 20...
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