CN114197222A - Flame-retardant anti-dripping polyester fiber and preparation method and application thereof - Google Patents
Flame-retardant anti-dripping polyester fiber and preparation method and application thereof Download PDFInfo
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- CN114197222A CN114197222A CN202111597797.4A CN202111597797A CN114197222A CN 114197222 A CN114197222 A CN 114197222A CN 202111597797 A CN202111597797 A CN 202111597797A CN 114197222 A CN114197222 A CN 114197222A
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- Prior art keywords
- flame
- terylene
- acid
- dripping
- ester
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- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 title claims abstract description 91
- 239000003063 flame retardant Substances 0.000 title claims abstract description 91
- 229920000728 polyester Polymers 0.000 title claims abstract description 73
- 239000000835 fiber Substances 0.000 title claims abstract description 56
- 238000002360 preparation method Methods 0.000 title claims abstract description 28
- 238000004043 dyeing Methods 0.000 claims abstract description 27
- 150000002148 esters Chemical class 0.000 claims abstract description 26
- -1 porphyrin structure compound Chemical class 0.000 claims abstract description 20
- 238000009830 intercalation Methods 0.000 claims abstract description 17
- 150000003863 ammonium salts Chemical class 0.000 claims abstract description 14
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 87
- 229920004933 Terylene® Polymers 0.000 claims description 82
- 239000000243 solution Substances 0.000 claims description 50
- GLDOVTGHNKAZLK-UHFFFAOYSA-N octadecan-1-ol Chemical compound CCCCCCCCCCCCCCCCCCO GLDOVTGHNKAZLK-UHFFFAOYSA-N 0.000 claims description 44
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 39
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 39
- 238000001035 drying Methods 0.000 claims description 29
- 238000002791 soaking Methods 0.000 claims description 24
- 239000007788 liquid Substances 0.000 claims description 22
- HWDGVJUIHRPKFR-UHFFFAOYSA-I copper;trisodium;18-(2-carboxylatoethyl)-20-(carboxylatomethyl)-12-ethenyl-7-ethyl-3,8,13,17-tetramethyl-17,18-dihydroporphyrin-21,23-diide-2-carboxylate Chemical compound [Na+].[Na+].[Na+].[Cu+2].N1=C(C(CC([O-])=O)=C2C(C(C)C(C=C3C(=C(C=C)C(=C4)[N-]3)C)=N2)CCC([O-])=O)C(=C([O-])[O-])C(C)=C1C=C1C(CC)=C(C)C4=N1 HWDGVJUIHRPKFR-UHFFFAOYSA-I 0.000 claims description 20
- 229940079841 sodium copper chlorophyllin Drugs 0.000 claims description 20
- 235000013758 sodium copper chlorophyllin Nutrition 0.000 claims description 20
- REVZBRXEBPWDRA-UHFFFAOYSA-N Stearyl citrate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)CC(O)(C(O)=O)CC(O)=O REVZBRXEBPWDRA-UHFFFAOYSA-N 0.000 claims description 19
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 19
- 230000014759 maintenance of location Effects 0.000 claims description 16
- 239000004138 Stearyl citrate Substances 0.000 claims description 15
- 150000004032 porphyrins Chemical group 0.000 claims description 15
- 235000019330 stearyl citrate Nutrition 0.000 claims description 15
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 14
- 239000004202 carbamide Substances 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 14
- 238000006243 chemical reaction Methods 0.000 claims description 11
- 150000001875 compounds Chemical class 0.000 claims description 10
- 150000007519 polyprotic acids Polymers 0.000 claims description 7
- 239000002253 acid Substances 0.000 claims description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 6
- 239000001301 oxygen Substances 0.000 claims description 6
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
- RLHGFJMGWQXPBW-UHFFFAOYSA-N 2-hydroxy-3-(1h-imidazol-5-ylmethyl)benzamide Chemical compound NC(=O)C1=CC=CC(CC=2NC=NC=2)=C1O RLHGFJMGWQXPBW-UHFFFAOYSA-N 0.000 claims description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 5
- IMQLKJBTEOYOSI-GPIVLXJGSA-N Inositol-hexakisphosphate Chemical compound OP(O)(=O)O[C@H]1[C@H](OP(O)(O)=O)[C@@H](OP(O)(O)=O)[C@H](OP(O)(O)=O)[C@H](OP(O)(O)=O)[C@@H]1OP(O)(O)=O IMQLKJBTEOYOSI-GPIVLXJGSA-N 0.000 claims description 5
- IMQLKJBTEOYOSI-UHFFFAOYSA-N Phytic acid Natural products OP(O)(=O)OC1C(OP(O)(O)=O)C(OP(O)(O)=O)C(OP(O)(O)=O)C(OP(O)(O)=O)C1OP(O)(O)=O IMQLKJBTEOYOSI-UHFFFAOYSA-N 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 239000000467 phytic acid Substances 0.000 claims description 5
- 229940068041 phytic acid Drugs 0.000 claims description 5
- 235000002949 phytic acid Nutrition 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- IMQYZLJIDNYQLX-UHFFFAOYSA-N 2-hydroxy-4-octadecoxy-2-(2-octadecoxy-2-oxoethyl)-4-oxobutanoic acid Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)CC(O)(C(O)=O)CC(=O)OCCCCCCCCCCCCCCCCCC IMQYZLJIDNYQLX-UHFFFAOYSA-N 0.000 claims description 4
- 239000004753 textile Substances 0.000 claims description 4
- UKBHVNMEMHTWQO-UHFFFAOYSA-N trioctadecyl 2-hydroxypropane-1,2,3-tricarboxylate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)CC(O)(C(=O)OCCCCCCCCCCCCCCCCCC)CC(=O)OCCCCCCCCCCCCCCCCCC UKBHVNMEMHTWQO-UHFFFAOYSA-N 0.000 claims description 4
- 238000005406 washing Methods 0.000 claims description 4
- GOQYKNQRPGWPLP-UHFFFAOYSA-N n-heptadecyl alcohol Natural products CCCCCCCCCCCCCCCCCO GOQYKNQRPGWPLP-UHFFFAOYSA-N 0.000 claims description 3
- 239000012266 salt solution Substances 0.000 claims description 3
- KSFOVUSSGSKXFI-GAQDCDSVSA-N CC1=C/2NC(\C=C3/N=C(/C=C4\N\C(=C/C5=N/C(=C\2)/C(C=C)=C5C)C(C=C)=C4C)C(C)=C3CCC(O)=O)=C1CCC(O)=O Chemical compound CC1=C/2NC(\C=C3/N=C(/C=C4\N\C(=C/C5=N/C(=C\2)/C(C=C)=C5C)C(C=C)=C4C)C(C)=C3CCC(O)=O)=C1CCC(O)=O KSFOVUSSGSKXFI-GAQDCDSVSA-N 0.000 claims description 2
- 229930003779 Vitamin B12 Natural products 0.000 claims description 2
- FDJOLVPMNUYSCM-WZHZPDAFSA-L cobalt(3+);[(2r,3s,4r,5s)-5-(5,6-dimethylbenzimidazol-1-yl)-4-hydroxy-2-(hydroxymethyl)oxolan-3-yl] [(2r)-1-[3-[(1r,2r,3r,4z,7s,9z,12s,13s,14z,17s,18s,19r)-2,13,18-tris(2-amino-2-oxoethyl)-7,12,17-tris(3-amino-3-oxopropyl)-3,5,8,8,13,15,18,19-octamethyl-2 Chemical compound [Co+3].N#[C-].N([C@@H]([C@]1(C)[N-]\C([C@H]([C@@]1(CC(N)=O)C)CCC(N)=O)=C(\C)/C1=N/C([C@H]([C@@]1(CC(N)=O)C)CCC(N)=O)=C\C1=N\C([C@H](C1(C)C)CCC(N)=O)=C/1C)[C@@H]2CC(N)=O)=C\1[C@]2(C)CCC(=O)NC[C@@H](C)OP([O-])(=O)O[C@H]1[C@@H](O)[C@@H](N2C3=CC(C)=C(C)C=C3N=C2)O[C@@H]1CO FDJOLVPMNUYSCM-WZHZPDAFSA-L 0.000 claims description 2
- 150000003278 haem Chemical class 0.000 claims description 2
- 229940116396 monostearyl citrate Drugs 0.000 claims description 2
- UHGIMQLJWRAPLT-UHFFFAOYSA-N octadecyl dihydrogen phosphate Chemical compound CCCCCCCCCCCCCCCCCCOP(O)(O)=O UHGIMQLJWRAPLT-UHFFFAOYSA-N 0.000 claims description 2
- IEQIEDJGQAUEQZ-UHFFFAOYSA-N phthalocyanine Chemical compound N1C(N=C2C3=CC=CC=C3C(N=C3C4=CC=CC=C4C(=N4)N3)=N2)=C(C=CC=C2)C2=C1N=C1C2=CC=CC=C2C4=N1 IEQIEDJGQAUEQZ-UHFFFAOYSA-N 0.000 claims description 2
- 229950003776 protoporphyrin Drugs 0.000 claims description 2
- 230000035484 reaction time Effects 0.000 claims description 2
- HWEXKRHYVOGVDA-UHFFFAOYSA-M sodium;3-trimethylsilylpropane-1-sulfonate Chemical compound [Na+].C[Si](C)(C)CCCS([O-])(=O)=O HWEXKRHYVOGVDA-UHFFFAOYSA-M 0.000 claims description 2
- DAFUFNRZWDWXJP-UHFFFAOYSA-N uroporphyrin i Chemical compound N1C(C=C2C(=C(CC(O)=O)C(C=C3C(=C(CC(O)=O)C(=C4)N3)CCC(O)=O)=N2)CCC(O)=O)=C(CC(O)=O)C(CCC(O)=O)=C1C=C1C(CC(O)=O)=C(CCC(=O)O)C4=N1 DAFUFNRZWDWXJP-UHFFFAOYSA-N 0.000 claims description 2
- 239000011715 vitamin B12 Substances 0.000 claims description 2
- 235000019163 vitamin B12 Nutrition 0.000 claims description 2
- 229920004934 Dacron® Polymers 0.000 claims 1
- 230000000704 physical effect Effects 0.000 abstract description 2
- 239000000975 dye Substances 0.000 description 20
- 230000002687 intercalation Effects 0.000 description 14
- KRKNYBCHXYNGOX-UHFFFAOYSA-K Citrate Chemical compound [O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O KRKNYBCHXYNGOX-UHFFFAOYSA-K 0.000 description 12
- 230000000694 effects Effects 0.000 description 8
- 238000002156 mixing Methods 0.000 description 8
- 238000005303 weighing Methods 0.000 description 7
- 229910052698 phosphorus Inorganic materials 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 5
- 239000003153 chemical reaction reagent Substances 0.000 description 5
- 239000011574 phosphorus Substances 0.000 description 5
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 229920000139 polyethylene terephthalate Polymers 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 238000007334 copolymerization reaction Methods 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- VICGTNZUNSWQCE-UHFFFAOYSA-N 4-chloro-2-hydroxy-1,3,2lambda5-dioxaphospholane 2-oxide Chemical compound OP1(=O)OCC(Cl)O1 VICGTNZUNSWQCE-UHFFFAOYSA-N 0.000 description 1
- 229920013683 Celanese Polymers 0.000 description 1
- 229930182559 Natural dye Natural products 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 229920004935 Trevira® Polymers 0.000 description 1
- DZHMRSPXDUUJER-UHFFFAOYSA-N [amino(hydroxy)methylidene]azanium;dihydrogen phosphate Chemical compound NC(N)=O.OP(O)(O)=O DZHMRSPXDUUJER-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000007385 chemical modification Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 150000001923 cyclic compounds Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 238000002074 melt spinning Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 238000002715 modification method Methods 0.000 description 1
- 239000000978 natural dye Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 229920001523 phosphate polymer Polymers 0.000 description 1
- ACVYVLVWPXVTIT-UHFFFAOYSA-N phosphinic acid Chemical compound O[PH2]=O ACVYVLVWPXVTIT-UHFFFAOYSA-N 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 229920006389 polyphenyl polymer Polymers 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 235000019260 propionic acid Nutrition 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 239000012192 staining solution Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/68—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with phosphorus or compounds thereof, e.g. with chlorophosphonic acid or salts thereof
- D06M11/70—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with phosphorus or compounds thereof, e.g. with chlorophosphonic acid or salts thereof with oxides of phosphorus; with hypophosphorous, phosphorous or phosphoric acids or their salts
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
- D06M13/224—Esters of carboxylic acids; Esters of carbonic acid
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
- D06M13/402—Amides imides, sulfamic acids
- D06M13/432—Urea, thiourea or derivatives thereof, e.g. biurets; Urea-inclusion compounds; Dicyanamides; Carbodiimides; Guanidines, e.g. dicyandiamides
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
- D06P3/34—Material containing ester groups
- D06P3/52—Polyesters
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/30—Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M2101/32—Polyesters
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
- D06M2200/30—Flame or heat resistance, fire retardancy properties
Abstract
The invention provides flame-retardant anti-dripping polyester and a preparation method and application thereof. The flame-retardant anti-dripping polyester provided by the invention is obtained by dyeing polyester with a porphyrin structure compound, intercalating with ester, and modifying with ammonium salt. The preparation method of the flame-retardant anti-dripping polyester provided by the invention is simple and convenient, has low cost, enables the polyester to obtain durable flame-retardant anti-dripping performance on the basis of ensuring the fiber strength and the color fastness to the fiber, has excellent flame-retardant anti-dripping and thermal stability, and can effectively avoid the harm to the environment and the physical properties of the fiber caused by adding a flame retardant.
Description
Technical Field
The invention relates to the technical field of textiles, in particular to flame-retardant anti-dripping terylene and a preparation method and application thereof.
Background
Polyethylene terephthalate (PET) fiber, namely terylene, is synthetic fiber with the largest output in the world, has excellent mechanical property, wear resistance, better chemical resistance stability and other properties, and plays an important role in the textile industry. However, the Limiting Oxygen Index (LOI) value of terylene is about 20%, which is one of the fibers easy to burn, and the burning process is accompanied by serious melt-drip phenomenon, and the produced melt-drip is easy to ignite other articles, thus aggravating the harm caused by fire. Therefore, the flame retardant and anti-dripping performance of the terylene is improved, which has important significance. At present, the commercial flame-retardant polyester mainly adopts a copolymerization method, such as GH of eastern Japan, TreviraCS of the Germany Hoechst Celanese company and other brands. Trevira CS is a product with higher occupancy of flame-retardant terylene in the current international market, and the adopted flame retardant is 3-phenyl phosphoric acid propionic acid or a cyclic compound thereof. In the industrialized blending type flame retardant, the Japanese Heim flame retardant polyester adopts polyphenyl diphenyl sulfone phosphate ester oligomer with the relative molecular mass of more than 8000 and polyester slices for blending spinning, and the prepared polyester fabric has good flame retardant property. In addition, phosphate flame retardants developed by Monsanto, USA, and chloroethylene phosphate polymers with higher molecular weight prepared by Stauffer have better water resistance, solvent resistance and low volatility, so that the application of the flame retardant is wide in the modification of the flame retardance of the terylene. The domestic industrialized flame-retardant polyester mainly adopts a 2-carboxyethyl phenyl hypophosphorous acid flame retardant. Although the flame-retardant polyester has a certain flame-retardant effect, the flame-retardant polyester mostly adopts a phosphorus-containing flame retardant, and the product realizes flame retardance mainly by a melt drop promoting mechanism, so that the problems of flame retardance and melt drop resistance of the polyester cannot be solved simultaneously, and the technical problem which is not solved for a long time in the flame-retardant field is solved.
Disclosure of Invention
The existing polyester copolymerization flame-retardant method needs to select proper comonomer, otherwise, not only the copolymerization is influenced, but also the smooth proceeding of melt spinning is influenced; and the performance requirements of the additive flame retardant and the anti-dropping agent are high, such as compatibility, particle size distribution, matching property with the PET melting temperature and the like, and meanwhile, certain chemical reagents can release toxic substances in the synthesis and thermal decomposition processes, so that the production concept of environmental protection is not met.
Therefore, the preparation of the flame-retardant polyester is implemented by the concept of environmental protection, the production cost is reduced, and the flame-retardant and anti-dripping effects are improved.
Aiming at the problems of poor flame-retardant and anti-dripping effects and environmental pollution of the terylene in the prior art, the invention provides the flame-retardant and anti-dripping terylene.
The inventor of the application finds that the dye and the flame-retardant component can play a synergistic effect in a flame-retardant system, and the flame-retardant effect can be further improved. The specific structure of porphyrin enables the modified terylene to have good potential carbon forming capability, pi-pi stacking capability and capability of forming hydrogen bonds with PET macromolecules, the effective combination of porphyrin and terylene can improve the melt viscosity and strength and flame-retardant anti-dripping property of the terylene in the high-temperature and combustion process, and meanwhile, after the terylene dyed by the porphyrin structure-containing compound is subjected to ester intercalation, a nitrogen-containing flame-retardant unit is introduced into the terylene, so that the modified terylene has good dyeing fastness and flame-retardant anti-dripping property. The process is green, environment-friendly, simple and feasible, and is beneficial to large-scale production.
In order to achieve the purpose, the invention is realized by the following technical scheme:
the invention provides a flame-retardant anti-dripping polyester which is obtained by dyeing polyester with a porphyrin structure compound, intercalating with ester, and modifying with ammonium salt.
Preferably, the limit oxygen index value of the flame-retardant anti-dripping polyester is 25-35% after washing for more than 50 times.
The invention also provides a preparation method of the flame-retardant anti-dripping polyester, which comprises the following steps:
1) soaking terylene in a porphyrin structure-containing compound solution for reaction to obtain dyed terylene;
2) soaking the dyed terylene obtained in the step 1) into an ester solution to obtain an ester intercalated dyed terylene;
3) soaking the ester intercalated dyed terylene obtained in the step 2) into an ammonium salt solution to obtain the dyed flame-retardant anti-dripping terylene.
Preferably, in the step 1), the concentration of the solution containing the porphyrin structure compound is 0.1g/L-300 g/L.
Preferably, the porphyrin structure-containing compound is selected from one or a combination of more than two of sodium copper chlorophyllin, protoporphyrin, hematoporphyrin dihydrochloride, uroporphyrin I dihydrochloride, heme, phthalocyanine and vitamin B12.
Preferably, in the step 1), the bath ratio of the terylene to the solution containing the porphyrin structure compound is 1: 10-50;
preferably, in step 1), the reaction temperature is 60-120 ℃,
preferably, the reaction time is 0.5h to 5h,
preferably, the liquid retention rate of the product obtained in the step 1) is 30-120%.
Preferably, the step 1) further comprises drying after reacting the terylene with the solution containing the porphyrin structure compound;
preferably, the drying temperature is 50-120 deg.C,
preferably, the drying time is 0.5-5 h.
Preferably, in step 2), the concentration of the ester solution is 10 to 80 wt%,
preferably, in step 2), the ester is an ester obtained from a polybasic acid and a long-chain alcohol;
preferably, the polybasic acid is one or the combination of more than two of citric acid, phytic acid, phosphoric acid and 1,2,3, 4-butanetetracarboxylic acid; preferably, the polybasic acid is one or a combination of more than two of citric acid and phosphoric acid;
preferably, the long chain alcohol is stearyl alcohol;
preferably, the ester is one or the combination of more than two of stearyl citrate and n-octadecyl phosphate;
preferably, the stearyl citrate is one or a combination of more than two of monostearyl citrate, distearyl citrate and tristearyl citrate;
preferably, the stearyl citrate is dioctadecyl citrate and trioctadecyl citrate;
preferably, in the step 2), the citric acid stearyl ester is prepared by reacting citric acid and stearyl alcohol in a molar ratio of 1:1-3,
preferably, the preparation is carried out at the temperature of 120-170 ℃ to obtain the stearyl citrate,
preferably, the reaction is carried out for 0.5 to 8 hours to prepare the citric acid stearyl ester.
Preferably, in the step 2), the bath ratio of the dyed terylene to the solution is 1:10-50,
preferably, in step 2), the treatment temperature is 70-120 ℃,
preferably, in the step 2), the treatment time is 0.1-5h,
preferably, in the step 2), the liquid retention rate of the obtained product is 80-120%,
preferably, the step 2) further comprises drying the product obtained after soaking;
preferably, the drying temperature is 50-120 ℃;
preferably, the drying time is 0.5-5 h.
Preferably, in the step 3), the bath ratio of the mixed solution of the ester intercalated dyed terylene and the urea phosphate is 1:10-50,
preferably, the soaking temperature is 70-120 deg.C,
preferably, the mass ratio of the urea to the phosphoric acid is 1:1-3,
preferably, the soaking time is 0.5-3 h.
Preferably, in step 3), the ammonium salt is an ammonium salt obtained by reacting acid with urea;
preferably, the acid is one or a combination of more than two of phosphoric acid, phytic acid and 1,2,3, 4-butane tetracarboxylic acid;
preferably, the acid is phosphoric acid;
preferably, the mass ratio of urea to phosphoric acid is 1: 1-3.
The invention also provides the application of the flame-retardant anti-dripping polyester or the flame-retardant anti-dripping polyester prepared by the preparation method in textiles.
The invention has the beneficial effects that:
(1) dyeing the terylene by using a compound containing a porphyrin structure, firmly bonding a dye to a terylene molecular chain through a dye-uptake effect, and then subjecting the terylene to ester intercalation and ammonium salt treatment, particularly phosphorus-containing ester and phosphorus-containing ammonium salt treatment, so as to endow P, N flame-retardant elements in the fiber to form a synergistic system with the dye, thereby obtaining the durable dyed flame-retardant anti-dripping terylene.
(2) The modification method provided by the invention is simple and easy to implement, has low cost, and can obtain excellent dyeing effect and excellent flame retardance and anti-dripping performance.
(3) The polyester is subjected to dyeing flame-retardant treatment by using after-finishing dyeing and chemical modification methods, the process flow is simple and controllable, the requirement is low, the flame-retardant and thermal stability of the prepared polyester is excellent, the molten drop phenomenon is effectively avoided, and meanwhile, the modification process can also effectively avoid the harm of adding a flame retardant to the environment and the physical properties of fibers.
Detailed Description
The invention provides a polyester fiber capable of efficiently resisting flame and molten drop.
The flame-retardant anti-dripping polyester provided by the invention dyes the polyester by using the compound containing the porphyrin structure, and due to the specific structure of porphyrin, the effective combination of the porphyrin and the polyester can improve the melt viscosity and strength and the flame-retardant anti-dripping property in the high-temperature and combustion process of the polyester, and meanwhile, after the polyester dyed by the compound containing the porphyrin structure is subjected to ester intercalation, a nitrogen-containing or even phosphorus-containing flame-retardant unit is introduced into the polyester, so that the modified polyester is endowed with good dyeing fastness and flame-retardant anti-dripping property. On the basis of ensuring the fiber strength and obtaining the fiber color, the terylene finally obtains durable flame retardant performance, and the flame retardant, anti-dripping and thermal stability performances are excellent. The preparation method of the flame-retardant anti-dripping polyester provided by the invention is simple and convenient, and the cost is low.
At present, the conventional flame-retardant polyester has serious molten drop phenomenon, and some flame-retardant polyester with the anti-molten drop effect has the defects of higher production cost and higher price. The invention adopts the natural dye containing the porphyrin structure to dye the terylene, adopts the intercalation means to introduce the modified ester, and then the modified ester reacts with ammonium salt, especially phosphorus-containing ammonium salt, so as to endow the terylene with the integration of dyeing, flame retardance and molten drop resistance. The raw materials used in the invention are cheap and easily available, the process is simple, and the application field and market of the terylene can be greatly expanded.
The intercalation is that the molecular chain of the terylene moves violently in the high-temperature solution treatment process, the terylene swells, the intermolecular force is weakened, the amorphous region and even the crystalline region become non-compact, therefore, the long carbon chain in the modified molecule of the invention can easily enter the amorphous region of the terylene because the polarity of the long carbon chain is similar to that of the terylene, when the temperature is reduced, the molecular chain moves slowly, the chain segment is frozen, and the modified molecule (namely ester) is embedded in the terylene, thereby achieving the purpose of flame retardant modification.
In the invention, the polyester is modified by using the ester prepared from the long-chain alcohol and the polybasic acid, so as to achieve good intercalation effect, namely, the longer the carbon chain, the easier the carbon chain enters an amorphous region of the polyester, and more entanglement is possible to occur, so that intercalation molecules are not easy to fall off in the subsequent use and washing processes, and the durability of the modified polyester is improved.
The bath ratio in the invention refers to the mass ratio of the terylene to the treatment liquid.
The preparation method comprises the following steps:
(1) preparing sodium copper chlorophyllin into a staining solution;
(2) soaking polyester fibers in a dyeing solution, taking the polyester fibers out of the dyeing solution, extruding and drying to obtain dyed polyester fibers;
(3) preparation of stearyl citrate: mixing citric acid and octadecanol for reaction to obtain octadecanol citrate;
(4) soaking the dyed terylene in the stearyl citrate solution, taking out the dyed terylene after treatment, extruding and keeping a certain liquid retention rate, and drying to obtain the dyed terylene with the stearyl citrate intercalation;
(5) and soaking the dyed terylene with the octadecanol citrate intercalated layer into a solution of phosphoric acid and urea for reaction to obtain the dyed flame-retardant anti-dripping terylene.
The technical solution of the present invention is further illustrated by the following specific examples.
The reagents and instrument source information used in the examples of the present invention are shown in table 1 below.
TABLE 1
| Reagent/instrument | Type/purity | Manufacturer of the product |
| Sodium copper chlorophyllin | 98％ | Nanjing Xizun chemical Co Ltd |
| Octadecanol | Analytical purity | Tianjin Kaima chemical technology Co Ltd |
| Citric acid | 97％ | Keruis Fine chemical Co., Ltd, Tianjin |
| Phosphoric acid | 85％ | Tianjin Feng boat chemical reagent Co Ltd |
| Phytic acid | 70％ | Nanjing Xizun medicine science and technology Co., Ltd |
| 1,2,3, 4-butanetetracarboxylic acid | 98％ | SHANGHAI MACKLIN BIOCHEMICAL Co.,Ltd. |
| Urea | Analytical purity | Tianjin Feng boat chemical reagent Co Ltd |
| Limit oxygen index tester | OI | Germany WAZAU Co |
| Electric heating blowing dry box | DHG-9070A | Shanghai-Heng scientific instruments accountability Co Ltd |
Example 1 flame-retardant anti-dripping polyester fiber dyed based on sodium copper chlorophyllin
The preparation method of the flame-retardant anti-dripping polyester fiber based on sodium copper chlorophyllin dyeing comprises the following steps:
(1) fiber dyeing: firstly weighing the mass of the terylene, and then calculating according to the bath ratio of 1:10 to obtain the volume of the dye solution. The concentration of sodium copper chlorophyllin in the dye solution is 5g/L, and the fiber is placed in the prepared dye solution for fully dyeing for 0.5h under the condition of water bath at 60 ℃;
(2) squeezing the fibers obtained by the treatment in the step (1) to remove redundant solution, enabling the liquid retention rate to be 30%, and then drying at 60 ℃ for 0.5h to obtain dyed terylene;
(3) preparation of stearyl citrate: mixing citric acid and octadecanol according to a molar ratio of 1:1, and reacting for 0.5h at 120 ℃ to obtain octadecanol citrate;
(4) soaking the dyed terylene obtained in the step (2) into 10 wt% of the octadecyl citrate ester solution obtained in the step (3) according to a bath ratio of 1:10, treating at 70 ℃ for 0.1h, taking out the dyed terylene, extruding and keeping 80% of liquid retention rate, and drying at 50 ℃ for 0.5h to obtain the dyed terylene with octadecyl citrate ester intercalation;
(5) and (3) soaking the dyed terylene with the octadecanol citrate intercalated layer obtained in the step (4) into a solution with the mass ratio of urea to phosphoric acid being 1:1 at the bath ratio of 1:10 at 70 ℃ for reaction for 0.5h to obtain the dyed flame-retardant anti-dripping terylene.
(6) And (4) drying the fiber treated in the step (5) at the temperature of 60 ℃ to obtain the dyed flame-retardant anti-dripping polyester. According to the GB/T3921-.
Example 2 flame-retardant anti-dripping polyester fiber dyed based on sodium copper chlorophyllin
The preparation method of the flame-retardant anti-dripping polyester fiber based on sodium copper chlorophyllin dyeing comprises the following steps:
(1) fiber dyeing: firstly weighing the mass of the terylene, and then calculating according to the bath ratio of 1:20 to obtain the volume of the dye solution. The concentration of sodium copper chlorophyllin in the dye solution is 100g/L, and the fiber is placed in the prepared dye solution for fully dyeing for 2 hours under the condition of water bath at 80 ℃;
(2) squeezing the fibers obtained by the treatment in the step (1) to remove redundant solution, enabling the liquid retention rate to be 60%, and then drying at 80 ℃ to obtain dyed terylene;
(3) preparation of stearyl citrate: mixing citric acid and octadecanol according to a molar ratio of 1:2, and reacting for 1h at 130 ℃ to obtain octadecanol citrate;
(4) soaking the dyed terylene obtained in the step (2) into 20 wt% of the octadecyl citrate ester solution obtained in the step (3) according to a bath ratio of 1:20, treating at 90 ℃ for 1h, taking out the dyed terylene, extruding and keeping 100% of liquid retention rate, and drying at 60 ℃ for 2h to obtain the dyed terylene with octadecyl citrate ester intercalation;
(5) and (3) soaking the dyed terylene with the octadecanol citrate intercalated layer obtained in the step (4) into a solution with the mass ratio of urea to phosphoric acid being 1:1.5 at the temperature of 80 ℃ according to the bath ratio of 1:20 for reaction for 1h to obtain the dyed flame-retardant anti-dripping terylene.
(6) And (4) drying the fiber treated in the step (5) at the temperature of 60 ℃ to obtain the dyed flame-retardant anti-dripping polyester. According to the GB/T3921-.
Example 3 flame-retardant anti-dripping polyester fiber dyed based on sodium copper chlorophyllin
The preparation method of the flame-retardant anti-dripping polyester fiber based on sodium copper chlorophyllin dyeing comprises the following steps:
(1) fiber dyeing: firstly weighing the mass of the terylene, and then calculating according to the bath ratio of 1:40 to obtain the volume of the dye solution. The concentration of sodium copper chlorophyllin in the dye solution is 250g/L, and the fiber is placed in the prepared dye solution for fully dyeing for 3 hours at the temperature of 100 ℃;
(2) squeezing the fibers obtained by the treatment in the step (1) to remove redundant solution, enabling the liquid retention rate to be 90%, and then drying at 100 ℃ to obtain dyed terylene;
(3) preparation of stearyl citrate: mixing citric acid and octadecanol according to a molar ratio of 1:2.5, and reacting for 4 hours at 130 ℃ to obtain octadecanol citrate;
(4) soaking the dyed terylene obtained in the step (2) into 40 wt% of the octadecyl citrate ester solution obtained in the step (3) according to a bath ratio of 1:30, treating at 100 ℃ for 1.5h, taking out the dyed terylene, extruding and maintaining a liquid retention rate of 110%, and drying at 80 ℃ for 3h to obtain the dyed terylene with octadecyl citrate ester intercalation;
(5) and (3) soaking the dyed terylene with the octadecanol citrate intercalated layer obtained in the step (4) into a solution with the mass ratio of urea to phosphoric acid being 1:2 at the temperature of 100 ℃ according to the bath ratio of 1:30 for reaction for 2h, thus obtaining the dyed flame-retardant anti-dripping terylene.
(6) And (4) drying the fiber treated in the step (5) at the temperature of 60 ℃ to obtain the dyed flame-retardant anti-dripping polyester. According to the GB/T3921-.
Example 4 flame-retardant anti-dripping polyester fiber dyed based on sodium copper chlorophyllin
The preparation method of the flame-retardant anti-dripping polyester fiber based on sodium copper chlorophyllin dyeing comprises the following steps:
(1) fiber dyeing: firstly weighing the mass of the terylene, and then calculating according to the bath ratio of 1:50 to obtain the volume of the dye solution. The concentration of sodium copper chlorophyllin in the dye solution is 300g/L, and the fiber is placed in the prepared dye solution for fully dyeing for 5 hours at the temperature of 120 ℃;
(2) squeezing the fibers obtained by the treatment in the step (1) to remove redundant solution, enabling the liquid retention rate to be 120%, and drying for 5 hours at 120 ℃ to obtain dyed terylene;
(3) preparation of stearyl citrate: mixing citric acid and octadecanol according to a molar ratio of 1:3, and reacting for 8 hours at 170 ℃ to obtain octadecanol citrate;
(4) soaking the dyed terylene obtained in the step (2) into 80 wt% of the octadecyl citrate ester solution obtained in the step (3) according to a bath ratio of 1:50, treating for 5h at 120 ℃, taking out the dyed terylene, extruding and keeping the liquid retention rate at 120%, and drying for 5h at 100 ℃ to obtain the dyed terylene with octadecyl citrate ester intercalation;
(5) and (3) soaking the dyed terylene with the octadecanol citrate intercalated layer obtained in the step (4) into a solution with the mass ratio of urea to phosphoric acid being 1:3 at the bath ratio of 1:50 at 120 ℃ for reaction for 3h to obtain the dyed flame-retardant anti-dripping terylene.
(6) And (4) drying the fiber treated in the step (5) at the temperature of 60 ℃ to obtain the dyed flame-retardant anti-dripping polyester. According to the GB/T3921-.
Comparative example 1 anti-dripping polyester dyed based on sodium copper chlorophyllin
The preparation method of the flame-retardant anti-dripping polyester fiber based on sodium copper chlorophyllin dyeing comprises the following steps:
(1) fiber dyeing: firstly weighing the mass of the terylene, and then calculating according to the bath ratio of 1:10 to obtain the volume of the dye solution. The concentration of sodium copper chlorophyllin in the dye solution is 10g/L, and the fiber is placed in the prepared dye solution for fully dyeing for 1h under the condition of water bath at 80 ℃;
(2) squeezing the fibers obtained by the treatment in the step (1) to remove redundant solution to enable the liquid retention rate to be 80%, and then drying for 0.5h at the temperature of 60 ℃ to obtain the dyed terylene.
According to the color fastness test of GB/T3921-.
Comparative example 2 flame-retardant polyester fiber based on phosphoric acid and urea treatment
The preparation method of the flame-retardant polyester fiber based on phosphoric acid and urea treatment comprises the following steps:
(1) firstly weighing the mass of the terylene, and then calculating the volume of the flame-retardant finishing liquid according to the bath ratio of 1:10, wherein the mass ratio of urea to phosphoric acid is 2: 1. Soaking the fiber in the prepared flame-retardant finishing liquid for 1h at 80 ℃;
(2) and (2) squeezing the fibers obtained by the treatment in the step (1) to remove redundant solution, so that the liquid retention rate is 100%, and then drying at 60 ℃ for 0.5h to obtain the flame-retardant polyester.
The Limiting Oxygen Index (LOI) value of the fiber after the flame-retardant polyester is washed for 5 times is 20 percent.
Comparative example 3 flame-retardant polyester with octadecanol citrate intercalation
The preparation method of the flame-retardant polyester based on the citric acid octadecanol ester intercalation comprises the following steps:
(1) preparation of stearyl citrate: mixing citric acid and octadecanol according to a molar ratio of 1:2.5, and reacting for 4 hours at 130 ℃ to obtain octadecanol citrate;
(2) preparing citric acid into finishing liquid with the mass concentration of 40%, weighing the mass of polyester, calculating the volume of the finishing liquid according to the bath ratio of 1:20, and then placing the fibers in the finishing liquid to soak for 1h at 100 ℃;
(3) and (3) squeezing the fibers obtained by the treatment in the step (2) to remove redundant solution, so that the liquid retention rate is 120%, and then drying at 85 ℃ for 0.5h to obtain the flame-retardant polyester.
The Limiting Oxygen Index (LOI) value of the fiber of the flame-retardant polyester after 10 times of washing is 20 percent.
The foregoing shows and describes the general principles and features of the present invention, together with the advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (12)
1. The flame-retardant anti-dripping polyester is characterized by being prepared by dyeing polyester with a porphyrin structure compound, intercalating with ester, and modifying with ammonium salt.
2. The flame-retardant anti-dripping polyester fiber according to claim 1, wherein the limit oxygen index value of the flame-retardant anti-dripping polyester fiber is 25-35% after washing with water for more than 50 times.
3. The preparation method of the flame-retardant anti-dripping polyester fiber as claimed in claim 1 or 2, characterized by comprising the following steps:
1) soaking terylene in a porphyrin structure-containing compound solution for reaction to obtain dyed terylene;
2) soaking the dyed terylene obtained in the step 1) into an ester solution to obtain an ester intercalated dyed terylene;
3) soaking the ester intercalated dyed terylene obtained in the step 2) into an ammonium salt solution to obtain the dyed flame-retardant anti-dripping terylene.
4. The method according to claim 3, wherein in the step 1), the concentration of the solution containing the porphyrin structure-containing compound is 0.1g/L to 300 g/L;
preferably, the porphyrin structure-containing compound is selected from one or a combination of more than two of sodium copper chlorophyllin, protoporphyrin, hematoporphyrin dihydrochloride, uroporphyrin I dihydrochloride, heme, phthalocyanine and vitamin B12;
preferably, the porphyrin structure compound is selected from sodium copper chlorophyllin.
5. The preparation method according to claim 3 or 4, wherein in the step 1), the bath ratio of the terylene to the solution containing the porphyrin structure compound is 1: 10-50;
preferably, in step 1), the reaction temperature is 60-120 ℃,
preferably, the reaction time is 0.5h to 5h,
preferably, the liquid retention rate of the product obtained in the step 1) is 30-120%.
6. The preparation method according to any one of claims 3 to 5, wherein the step 1) further comprises drying after reacting the dacron with the porphyrin structure-containing compound solution;
preferably, the drying temperature is 50-120 deg.C,
preferably, the drying time is 0.5-5 h.
7. The production method according to any one of claims 3 to 6,
in the step 2), the ester is an ester obtained from polybasic acid and long-chain alcohol;
preferably, the polybasic acid is one or the combination of more than two of citric acid, phytic acid, phosphoric acid and 1,2,3, 4-butanetetracarboxylic acid; preferably, the polybasic acid is one or a combination of more than two of citric acid and phosphoric acid;
preferably, the long chain alcohol is stearyl alcohol;
preferably, the ester is one or the combination of more than two of stearyl citrate and n-octadecyl phosphate;
preferably, the stearyl citrate is one or a combination of more than two of monostearyl citrate, distearyl citrate and tristearyl citrate;
preferably, the stearyl citrate is distearyl citrate and trioctadecyl citrate.
8. The production method according to any one of claims 3 to 7, wherein in the step 2), the concentration of the ester solution is 10 to 80 wt%,
preferably, in the step 2), the bath ratio of the dyed terylene to the solution is 1:10-50,
preferably, in step 2), the treatment temperature is 70-120 ℃,
preferably, in the step 2), the treatment time is 0.1-5h,
preferably, in the step 2), the liquid retention rate of the obtained product is 80-120%.
9. The method according to any one of claims 3 to 8, wherein the step 2) further comprises drying the product obtained after soaking;
preferably, the drying temperature is 50-120 ℃;
preferably, the drying time is 0.5-5 h.
10. The method according to any one of claims 3 to 9, wherein in step 3), the bath ratio of the ester-intercalated dyed polyester to the ammonium salt solution is 1:10 to 50,
preferably, the soaking temperature is 70-120 deg.C,
preferably, the soaking time is 0.5-3 h.
11. The method according to any one of claims 3 to 10, wherein in step 3), the ammonium salt is an ammonium salt obtained by reacting an acid with urea;
preferably, the acid is one or a combination of more than two of phosphoric acid, phytic acid and 1,2,3, 4-butane tetracarboxylic acid;
preferably, the acid is phosphoric acid;
preferably, the mass ratio of urea to phosphoric acid is 1: 1-3.
12. The flame-retardant anti-dripping polyester fiber according to claim 1 or 2 or the flame-retardant anti-dripping polyester fiber prepared by the preparation method according to any one of claims 3 to 11 is applied to textiles.
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