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Flame-retardant PET and fiber thereof

A flame retardant and flame retardant technology, which is applied in the field of flame retardant PET and its fibers and its preparation, can solve the problems of high dosage of flame retardants and flame retardant auxiliaries, no mention of fire protection level and anti-droplet effect, etc.

Inactive Publication Date: 2020-05-15
BEIJING INST OF CLOTHING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[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 triphosphate One or a mixture of phenyl 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 amount of flame retardants and flame retardant additives used in the patent is relatively large, and there is no mention of fire protection level and anti-dripping effect

Method used

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  • Flame-retardant PET and fiber thereof
  • Flame-retardant PET and fiber thereof
  • Flame-retardant PET and fiber thereof

Examples

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preparation example Construction

[0061] According to the second aspect of the present invention, the present invention also provides a method for preparing flame retardant PET, preferably the flame retardant PET described in the first aspect, the method comprising the following steps:

[0062] Step 1, add monomers and / or flame retardant components, stir evenly;

[0063] In step 2, a polymerization reaction is performed to generate flame retardant PET.

[0064] Preferably,

[0065] Described monomer comprises terephthalic acid, ethylene glycol;

[0066] The flame retardant components include sulfonates, DOPO flame retardants, and fluorine-containing compounds;

[0067] More preferably,

[0068] Described sulfonate is selected from alkyl sulfonate, aryl sulfonate;

[0069] The DOPO flame retardant is selected from DOPO-HPM, DOPO-HAM, DOPO-TRIOL, DOPO-BQ, DDP, OD-PN and DOPO-NQ;

[0070] The fluorine-containing compound is selected from fluorine-containing alkanes, fluorine-containing olefins, fluorine-cont...

Embodiment 1

[0100] 700g of terephthalic acid TPA, 330g of ethylene glycol, and 62g of DDP were added to the reaction kettle, stirred and evenly mixed;

[0101] Heat to 260℃, carry out the esterification reaction, the reaction pressure is controlled at 330kpa, when the water output reaches one-third of the theoretical water output, slightly open the valve and begin to depressurize, until the normal pressure, the reaction time is when the theoretical water output reaches 150 ml. Accurate, the time is about 2-2.5h;

[0102] Then add 13.5g of tetramethylammonium fluoride and 2.5g of sodium trifluoromethanesulfonate to the solution after esterification, fill with nitrogen protection, continue stirring, the polymerization temperature finally reaches 280℃-285℃, and the polymerization pressure is less than 100pa , the polymerization time is 2-3h, and the desired polymer molecular weight is reached. After the reaction is completed, the flame-retardant PET chips are obtained by tape injection and d...

Embodiment 2

[0104] The method is the same as that of Example 1, the difference is that the DDP used is 70 g, and the flame retardant PET is obtained.

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Abstract

The present invention provides a flame retardant PET and a fiber thereof. The flame retardant PET comprises a matrix PET and a flame retardant component, the flame retardant component comprises a fluorine-containing compound, a sulfonate and a DOPO flame retardant, and the flame retardant PET can maintain good spinning ability and has excellent flame retardant property at the same time. The invention further provides a preparation method of the flame-retardant PET. The preparation method is simple in process and convenient to operate.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a flame retardant PET and its fiber and a preparation method. Background technique [0002] Polyethylene terephthalate, abbreviated as 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. However, due to the flammability of polyester fiber itself, once a fire occurs, it will bring great damage to life and property. Therefore, the research on flame retardancy of polyester fiber has attracted worldwide attention. attention within. [0004] Patent Cooperation Treaty (PCT) WO095 / 20593 reports a production method of flame retardant polyester: a compound is formed by reacting a chlorophosphine derivative and (iso)acrylic acid, which is esterified and refined with a lower monohydric alcohol, and then mixed with ethylene glycol. The flame retardant como...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/692D01F6/84
CPCC08G63/6926D01F6/84
Inventor 王锐高建伟董振峰魏丽菲朱志国王然
Owner BEIJING INST OF CLOTHING TECH