CN110241616B - Method for enhancing performance of alumina flexible fiber - Google Patents
Method for enhancing performance of alumina flexible fiber Download PDFInfo
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- CN110241616B CN110241616B CN201910308904.3A CN201910308904A CN110241616B CN 110241616 B CN110241616 B CN 110241616B CN 201910308904 A CN201910308904 A CN 201910308904A CN 110241616 B CN110241616 B CN 110241616B
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- alumina
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- 239000013305 flexible fiber Substances 0.000 title claims abstract description 95
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 title claims abstract description 93
- 238000000034 method Methods 0.000 title claims abstract description 36
- 230000002708 enhancing effect Effects 0.000 title claims abstract description 12
- 239000000835 fiber Substances 0.000 claims abstract description 59
- 238000010438 heat treatment Methods 0.000 claims abstract description 36
- 238000011065 in-situ storage Methods 0.000 claims abstract description 21
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 17
- 238000002360 preparation method Methods 0.000 claims abstract description 16
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 15
- 239000003054 catalyst Substances 0.000 claims abstract description 15
- 238000003786 synthesis reaction Methods 0.000 claims abstract description 12
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 11
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 9
- 239000010703 silicon Substances 0.000 claims abstract description 9
- 229920001187 thermosetting polymer Polymers 0.000 claims abstract description 8
- 229910052681 coesite Inorganic materials 0.000 claims abstract description 7
- 229910052906 cristobalite Inorganic materials 0.000 claims abstract description 7
- 229910052682 stishovite Inorganic materials 0.000 claims abstract description 7
- 229910052905 tridymite Inorganic materials 0.000 claims abstract description 7
- 238000007788 roughening Methods 0.000 claims abstract description 6
- 239000002105 nanoparticle Substances 0.000 claims abstract description 5
- 230000009471 action Effects 0.000 claims abstract description 4
- 230000003301 hydrolyzing effect Effects 0.000 claims abstract description 3
- 239000002897 polymer film coating Substances 0.000 claims abstract description 3
- 239000000839 emulsion Substances 0.000 claims description 40
- 238000001035 drying Methods 0.000 claims description 38
- 238000006116 polymerization reaction Methods 0.000 claims description 29
- 229920000642 polymer Polymers 0.000 claims description 26
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims description 20
- 238000001723 curing Methods 0.000 claims description 18
- 239000000314 lubricant Substances 0.000 claims description 15
- 125000002091 cationic group Chemical group 0.000 claims description 13
- 239000003795 chemical substances by application Substances 0.000 claims description 13
- 239000007921 spray Substances 0.000 claims description 11
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 10
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 10
- 238000009210 therapy by ultrasound Methods 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- ODKSFYDXXFIFQN-BYPYZUCNSA-N L-arginine Chemical compound OC(=O)[C@@H](N)CCCN=C(N)N ODKSFYDXXFIFQN-BYPYZUCNSA-N 0.000 claims description 9
- 229930064664 L-arginine Natural products 0.000 claims description 9
- 235000014852 L-arginine Nutrition 0.000 claims description 9
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 9
- 238000002791 soaking Methods 0.000 claims description 9
- 238000005507 spraying Methods 0.000 claims description 9
- 229920002521 macromolecule Polymers 0.000 claims description 8
- 239000004014 plasticizer Substances 0.000 claims description 8
- 239000002994 raw material Substances 0.000 claims description 8
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 claims description 7
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims description 7
- 239000007787 solid Substances 0.000 claims description 7
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 6
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 6
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 6
- 239000002216 antistatic agent Substances 0.000 claims description 6
- 239000007822 coupling agent Substances 0.000 claims description 6
- 239000002253 acid Substances 0.000 claims description 5
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 5
- 239000000194 fatty acid Substances 0.000 claims description 5
- 229930195729 fatty acid Natural products 0.000 claims description 5
- 239000004814 polyurethane Substances 0.000 claims description 5
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 claims description 5
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 4
- 125000005313 fatty acid group Chemical group 0.000 claims description 4
- 235000011187 glycerol Nutrition 0.000 claims description 4
- 238000013007 heat curing Methods 0.000 claims description 4
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 4
- 229920006254 polymer film Polymers 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 230000035484 reaction time Effects 0.000 claims description 3
- -1 PVA1788 or PVA2488 Substances 0.000 claims description 2
- 229920002873 Polyethylenimine Polymers 0.000 claims description 2
- 239000003822 epoxy resin Substances 0.000 claims description 2
- 229920000647 polyepoxide Polymers 0.000 claims description 2
- 239000004846 water-soluble epoxy resin Substances 0.000 claims description 2
- 230000004048 modification Effects 0.000 description 21
- 238000012986 modification Methods 0.000 description 21
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 15
- 229910052863 mullite Inorganic materials 0.000 description 15
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 12
- 238000005245 sintering Methods 0.000 description 11
- 238000003756 stirring Methods 0.000 description 9
- 238000001816 cooling Methods 0.000 description 8
- 235000019441 ethanol Nutrition 0.000 description 8
- 239000002585 base Substances 0.000 description 7
- 238000000746 purification Methods 0.000 description 7
- 239000000919 ceramic Substances 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 6
- 238000000576 coating method Methods 0.000 description 6
- 239000012528 membrane Substances 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 239000002103 nanocoating Substances 0.000 description 5
- 239000002131 composite material Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 235000012239 silicon dioxide Nutrition 0.000 description 4
- 239000003733 fiber-reinforced composite Substances 0.000 description 3
- 239000002086 nanomaterial Substances 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 2
- 238000010041 electrostatic spinning Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 238000009987 spinning Methods 0.000 description 2
- 229910003158 γ-Al2O3 Inorganic materials 0.000 description 2
- VILCJCGEZXAXTO-UHFFFAOYSA-N 2,2,2-tetramine Chemical class NCCNCCNCCN VILCJCGEZXAXTO-UHFFFAOYSA-N 0.000 description 1
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 description 1
- 238000005411 Van der Waals force Methods 0.000 description 1
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 description 1
- 238000002679 ablation Methods 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000011825 aerospace material Substances 0.000 description 1
- RGCKGOZRHPZPFP-UHFFFAOYSA-N alizarin Chemical compound C1=CC=C2C(=O)C3=C(O)C(O)=CC=C3C(=O)C2=C1 RGCKGOZRHPZPFP-UHFFFAOYSA-N 0.000 description 1
- SMZOGRDCAXLAAR-UHFFFAOYSA-N aluminium isopropoxide Chemical compound [Al+3].CC(C)[O-].CC(C)[O-].CC(C)[O-] SMZOGRDCAXLAAR-UHFFFAOYSA-N 0.000 description 1
- JNDMLEXHDPKVFC-UHFFFAOYSA-N aluminum;oxygen(2-);yttrium(3+) Chemical compound [O-2].[O-2].[O-2].[Al+3].[Y+3] JNDMLEXHDPKVFC-UHFFFAOYSA-N 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 229910052810 boron oxide Inorganic materials 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000008119 colloidal silica Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- JKWMSGQKBLHBQQ-UHFFFAOYSA-N diboron trioxide Chemical compound O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 238000001891 gel spinning Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 239000012784 inorganic fiber Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002557 mineral fiber Substances 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 239000002077 nanosphere Substances 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 1
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 1
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 1
- 229940096992 potassium oleate Drugs 0.000 description 1
- MLICVSDCCDDWMD-KVVVOXFISA-M potassium;(z)-octadec-9-enoate Chemical compound [K+].CCCCCCCC\C=C/CCCCCCCC([O-])=O MLICVSDCCDDWMD-KVVVOXFISA-M 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000001338 self-assembly Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 238000003980 solgel method Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000000935 solvent evaporation Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 235000002906 tartaric acid Nutrition 0.000 description 1
- 239000011975 tartaric acid Substances 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 229910019901 yttrium aluminum garnet Inorganic materials 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
Classifications
-
- 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
- D06M11/77—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 silicon or compounds thereof
- D06M11/79—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 silicon or compounds thereof with silicon dioxide, silicic 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
- D06M13/144—Alcohols; Metal alcoholates
- D06M13/148—Polyalcohols, e.g. glycerol or glucose
-
- 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
- D06M13/184—Carboxylic acids; Anhydrides, halides or salts thereof
- D06M13/188—Monocarboxylic acids; Anhydrides, halides or salts thereof
-
- 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
- D06M13/50—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with organometallic compounds; with organic compounds containing boron, silicon, selenium or tellurium atoms
- D06M13/51—Compounds with at least one carbon-metal or carbon-boron, carbon-silicon, carbon-selenium, or carbon-tellurium bond
- D06M13/513—Compounds with at least one carbon-metal or carbon-boron, carbon-silicon, carbon-selenium, or carbon-tellurium bond with at least one carbon-silicon bond
-
- 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
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/327—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated alcohols or esters thereof
- D06M15/333—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated alcohols or esters thereof of vinyl acetate; Polyvinylalcohol
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- 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
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/55—Epoxy resins
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- 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
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/564—Polyureas, polyurethanes or other polymers having ureide or urethane links; Precondensation products forming them
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- 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
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/61—Polyamines polyimines
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- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Emergency Medicine (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Inorganic Fibers (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
Abstract
The invention provides a method for enhancing the performance of an alumina flexible fiber, which comprises the following steps: (1) in-situ synthesis of nano SiO2Film formation: under the action of silicon source and catalyst, quickly hydrolyzing and condensing on the surface of alumina flexible fiber to form SiO2Nanoparticles; (2) carrying out heat treatment and surface roughening treatment on the alumina flexible fiber obtained in the step (1); (3) and (3) carrying out polymer film coating and thermosetting treatment on the alumina flexible fiber treated in the step (2). The method can improve the strength of the fiber and keep good mechanical property of the alumina flexible fiber at high temperature; meanwhile, microcracks generated in the preparation process can be repaired, and the mechanical property of the fiber is further improved.
Description
Technical Field
The invention belongs to the technical field of fiber materials, and particularly relates to a method for enhancing the performance of an aluminum oxide flexible fiber.
Technical Field
The flexible alumina fiber is high performance inorganic fiber and has alumina as main component (A1)2O3) And certain amount of additive, such as silicon dioxide, boron oxide, iron oxide, zirconium oxide, magnesium oxide, etc. in the form of short fiber, flexible fiber, whisker, etc.
The flexible alumina fiber has the features of high temperature resistance, high strength, high corrosion resistance, high heat shock resistance, high heat insulating performance, small size, light weight, high mechanical shock resistance, etc. and may be used as the reinforcing component for ceramic, metal, plastic, etc. and has important function in industry, aviation and other fields. The alumina fiber has high strength and high melting point, can still maintain a complete fiber form at the temperature of more than 1400 ℃ in the atmosphere, has the characteristics of impact resistance, flexibility and the like, has the advantage of unique thickness in the aspect of being used for a composite material with ablation resistance and heat insulation functions, has extremely low thermal conductivity, is considered as an excellent high-temperature heat insulation material, and is widely used in the fields of fire resistance and high precision. However, since the alumina fiber itself is a mineral fiber, the alumina fiber produced in China is not suitable for spinning, sintering and other processes, and the surface of the fiber is easily damaged mechanically or cracked, so that the fiber cannot meet the process requirements of stirring, smashing and the like in the subsequent treatment.
The invention patent with the application number of 201010597725.5 provides a flexible alumina ceramic fiber and a preparation method thereof, wherein the flexible alumina ceramic fiber is prepared by an electrostatic spinning method, the diameter of the obtained alumina ceramic fiber is 400-600 nm, and the alumina ceramic fiber consists of nanoparticles with the particle size of 20-30 nm; al (Al)2O397.0% of SiO2The content is 3.0 percent. The invention patent with application number 201210257851.5 discloses a flexible gamma-Al2O3The preparation method of the fiber membrane comprises the steps of preparing a sol spinning solution from aluminum chloride, aluminum isopropoxide, absolute ethyl alcohol, tartaric acid and polyvinylpyrrolidone by adopting a method combining a sol-gel method and an electrostatic spinning technology to prepare an alumina gel fiber membrane, and calcining the gel fiber membrane to obtain gamma-Al2O3A fibrous membrane. The obtained alumina fiber membrane has good flexibility, difficult fracture, excellent mechanical property and strong processability.
However, in the existing preparation method, micro cracks can occur in the gel spinning equipment and the sintering process in the preparation process, so that the mechanical property of the alumina flexible fiber is influenced. And when the use temperature of the alumina flexible fiber reaches above 1350 ℃, the mechanical property of the alumina flexible fiber is reduced, and particularly the toughness is obviously reduced.
Disclosure of Invention
The present invention solves the above problems by providing a method for enhancing the performance of alumina flexible fibers. According to the invention, the silicon dioxide is polymerized in situ and forms a composite membrane with the polyurethane emulsion on the surface of the alumina flexible fiber, the method can improve the strength of the fiber, and the good mechanical property of the alumina-based ceramic fiber is maintained at high temperature.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method of enhancing the performance of an alumina flexible fiber comprising the steps of:
(1) in-situ synthesis of nano SiO2Film formation: under the action of silicon source and catalyst, quickly hydrolyzing and condensing on the surface of alumina flexible fiber to form SiO2Nanoparticles;
(2) carrying out heat treatment and surface roughening treatment on the alumina flexible fiber obtained in the step (1);
(3) and (3) carrying out polymer film coating and thermosetting treatment on the alumina flexible fiber treated in the step (2).
Preferably, the silicon source is one of tetraethoxysilane, silica sol or silicon dispersion liquid, and the catalyst is one of L-arginine, ammonia water or KH-550.
Preferably, the in-situ synthesis of nano SiO in step (1)2The specific method of the film comprises the following steps:
(1.1) putting the alumina flexible fiber into alcohol for ultrasonic treatment, and fully drying;
(1.2) adding a catalyst to a silicon source and adjusting the pH to obtain a polymerization solution,
(1.3) soaking the fiber in the step (1.1) in the polymerization solution in the step (1.2) and reacting for a certain time;
and (1.4) drying the alumina fiber reacted in the step (1.3) in an oven.
Further preferably, the ultrasonic treatment time in the step (1.1) is 1 hour or more.
Preferably, the preparation method of the polymerization solution in the step (1.2) is one of the following methods:
the method comprises the following steps: mixing 10-20 parts by weight of ethyl orthosilicate with 250 parts by weight of propanol, and adjusting the pH to 8-9 by using L-arginine;
the second method comprises the following steps: taking acid silica sol with solid content of 30%, and adjusting pH to 6 with ammonia water or KH-550.
Preferably, the polymerization solution is stirred during the preparation process, and the stirring time is 10-60 min.
Preferably, the reaction time in step (1.3) is 2 hours or more.
Further preferably, the reaction time is 2 to 3 hours.
Preferably, the drying conditions in step (1.4) are as follows: the drying temperature is 110-130 ℃, and the drying time is more than 10 minutes.
Further preferably, the drying time is 10-20 min.
According to the first film forming method, silicon dioxide particles are assembled on the surface of the aluminum oxide flexible fiber by taking tetraethoxysilane as a silicon source, propanol as a solvent and L-arginine as a catalyst, and finally the silicon dioxide particles are subjected to rapid sintering treatment to form a compact film.
And secondly, forming 10-100nm colloidal silica particles on the surface and at the cracks of the alumina flexible fiber.
The self-assembly of the nano material is a process of spontaneously forming the nano structure material under the drive of the principle of lowest system energy by non-covalent bond interaction such as hydrogen bond, van der waals force, electrostatic force and the like, hydrophilic-hydrophobic interaction and atoms, molecular particles and other structural units under proper physical and chemical conditions. Through solvent evaporation and capillary action force, the monodisperse inorganic nanospheres can be assembled into a two-dimensional or three-dimensional ordered nanostructure film, and the purpose of repairing fiber surface damage is achieved through ceramic treatment.
Compared with the second method, the in-situ polymerization nano-particles formed by the first method have narrower particle size distribution and simpler operation steps.
Preferably, the heat treatment temperature in the step (2) is 650-750 ℃; the surface roughening treatment adopts hydrofluoric acid rapid rinsing or physical sanding treatment.
Further preferably, the heat treatment in step (2) comprises the steps of: placing the alumina flexible fiber in a sintering furnace, heating to 650-750 ℃ at a heating rate of 10 ℃/min, and then naturally cooling;
the surface roughening treatment in the step (2) comprises the following steps: the alumina flexible fiber after heat treatment is quickly rinsed or physically sanded by hydrofluoric acid with the mass percentage concentration of 1.5 percent and rinsed by clean water.
Because the performance of the self-assembled coating is slightly different from that of the original fiber, after the ceramic fiber is sintered, the ceramic fiber does not conform to the subsequent textile or composite material processing technology due to the bundling property, the abrasion resistance, the surface performance and the like, and generally needs to be coated with a multiphase structure surface modifier taking organic emulsion as a main body, which is called a high molecular sizing agent. The coating can effectively strengthen and toughen the fibers, change the surface state of the ceramic fibers and remove static charges, thereby not only meeting the requirements of the processing performance of the subsequent working procedure of the protofilament, but also promoting the combination between the fibers and a reinforced body in the composite material.
Preferably, the polymer coating method in step (3) is: spraying the high molecular emulsion on the alumina flexible fiber in a spray form; the polymer emulsion is one of the following emulsions,
polymer emulsion one: the polymer emulsion comprises the following raw materials in parts by weight:
mixing the raw materials in sequence according to the proportion and the sequence, and dispersing for 3 hours for later use;
or
And B, high-molecular emulsion II: the polymer emulsion comprises the following raw materials in parts by weight:
the raw materials are mixed in sequence according to the proportion and the sequence, and are dispersed for 3 hours for standby.
Preferably, in the first polymer emulsion:
the main polymer film forming agent is a commercial cationic PU-54 polyurethane emulsion,
the plasticizer is one or two of glycerol or ethylene glycol,
the coupling agent is one or two of KH-550 and KH-560,
the lubricant is a cationic lubricant and is a cationic lubricant,
the antistatic agent is fatty acid potassium salt,
the softener is polyethyleneimine;
in the second polymer emulsion:
the main polymer film-forming agent is a commercial cationic epoxy resin emulsion,
the first macromolecule auxiliary film-forming agent is water-soluble epoxy resin,
the second macromolecule auxiliary film-forming agent is polyvinyl alcohol, including PVA1788 or PVA2488,
the plasticizer is glycerin, and the plasticizer is,
the coupling agent is KH-550 and KH-560,
the lubricant is a cationic lubricant and is a cationic lubricant,
the antistatic agent is fatty acid potassium salt.
Further preferably, the cationic lubricant is one or more of stearate, turkey red oil, triethylene tetramine salt and cyclic amide salt.
Further preferably, the potassium salt of a fatty acid includes potassium oleate and the like.
Selecting a first polymer emulsion and a second polymer emulsion: different coating agents generally have differences in coated fiber strength and downstream product use, generally PU has stronger coating toughness than PVA but slightly weaker strength; downstream products, if fiber reinforcement is desired, are selected based on the substrate affinity for PU and PVA.
Preferably, the heat curing treatment conditions in step (3) are as follows: the curing temperature is 55-70 ℃; curing time: 1-1.5 hours.
Further preferably, the alumina flexible fiber includes mullite flexible fiber.
The method of the present invention may also be used to enhance the stability and tensile strength of yttrium aluminum garnet fibers and high alumina aluminum silicate fibers.
The invention has the beneficial effects that:
the method can improve the strength of the fiber and keep good mechanical property of the alumina flexible fiber at high temperature; meanwhile, microcracks generated in the preparation process can be repaired, and the mechanical property of the fiber is further improved.
The reinforced alumina flexible fiber can be better used in the fields needing higher strength and higher toughness. Such as for aerospace materials. The alumina fiber reinforced composite material is used for the solid engine shell of the air-launched missile, the explosion pressure is the same as that of steel, but the mass is lighter than that of aluminum alloy, in addition, the alumina fiber reinforced composite material is also used for an engine spray pipe of a solid rocket, so that the design of the spray pipe is simplified, the number of parts is reduced, the mass is lightened, and the alumina fiber reinforced composite material is one of application materials with development potential in the field of aerospace.
Detailed Description
The invention is further explained and illustrated with reference to specific examples.
Example 1
(1) In-situ synthesis of nano SiO on surface of alumina flexible fiber2Film(s)
(1.1) fiber surface purification: putting the alumina flexible fiber into alcohol for ultrasonic treatment for 1 hour, and fully drying;
(1.2) preparation of a polymerization solution: mixing 10g of ethyl orthosilicate and 250g of propanol, adjusting the pH to 8.5 by using L-arginine as a catalyst and an acid-base regulator, and stirring for 20 minutes;
(1.3) in-situ polymerization: soaking the fiber in the step (1.1) in the polymerization solution in the step (1.2) for 2 hours;
and (1.4) placing the alumina fiber reacted in the step (1.3) in an oven for fast drying, wherein the drying temperature is 120 ℃, and the drying time is 10 minutes.
(2) And (3) heat treatment: placing the alumina flexible fiber in a sintering furnace, heating to 650 ℃ at a heating rate of 10 ℃/min, and then naturally cooling. And (3) quickly rinsing the aluminum oxide flexible fiber subjected to heat treatment for 15 seconds by using hydrofluoric acid with the mass percentage concentration of 1.5%, and rinsing the aluminum oxide flexible fiber by using clear water.
(3) Spraying a high-molecular emulsion on the alumina flexible fiber in a spray form to perform high-molecular coating and thermosetting treatment, wherein the curing temperature is 60 ℃; curing time: for 1 hour.
The formula and the adding sequence of the polymer emulsion are as follows:
in the embodiment, the tensile strength of the alumina flexible fiber before modification is 1.015GPa, and the tensile strength of the alumina flexible fiber after treatment is 1.464 GPa; the maximum service temperature before modification was 1400 ℃ and after modification was 1450 ℃ (in terms of thermal shrinkage of 2%).
Example 2
(1) In-situ synthesis of nano SiO on surface of alumina flexible fiber2Film(s)
(1.1) fiber surface purification: putting the alumina flexible fiber into alcohol for ultrasonic treatment for 2 hours, and fully drying;
(1.2) preparation of a polymerization solution: mixing 20g of ethyl orthosilicate and 250g of propanol, adjusting the pH to 9 by using L-arginine as a catalyst and an acid-base regulator, and stirring for 20 minutes;
(1.3) in-situ polymerization: soaking the fiber in the step (1.1) in the polymerization solution in the step (1.2) for 3 hours;
and (1.4) placing the alumina fiber reacted in the step (1.3) in an oven for fast drying, wherein the drying temperature is 130 ℃, and the drying time is 15 minutes.
(2) And (3) heat treatment: placing the alumina flexible fiber in a sintering furnace, raising the temperature to 750 ℃ at a heating rate of 10 ℃/min, and then naturally cooling. And (3) quickly rinsing the aluminum oxide flexible fiber subjected to heat treatment for 15 seconds by using hydrofluoric acid with the mass percentage concentration of 1.5%, and rinsing the aluminum oxide flexible fiber by using clear water.
(3) Spraying the high molecular emulsion on the alumina flexible fiber in a spray form to carry out high molecular coating and thermosetting treatment; the curing temperature is 55 ℃; curing time: for 1.5 hours.
The formula and the adding sequence of the polymer emulsion are as follows:
in this embodiment, the tensile strength of the alumina flexible fiber before modification is 1.015GPa, and the tensile strength of the alumina flexible fiber after treatment is 1.341 GPa; the maximum service temperature before modification was 1400 ℃ and after modification was 1450 ℃ (in terms of thermal shrinkage of 2%).
Example 3
(1) In-situ synthesis of nano SiO on surface of alumina flexible fiber2Film(s)
(1.1) fiber surface purification: putting the alumina flexible fiber into alcohol for ultrasonic treatment for 1 hour, and fully drying;
(1.2) preparation of a polymerization solution: taking acid silica sol with solid content of 30%, taking ammonia water as a catalyst and an acid-base regulator, regulating the pH value to 6, and stirring for 20 minutes for later use;
(1.3) in-situ polymerization: soaking the fiber in the step (1.1) in the polymerization solution in the step (1.2) for 2 hours;
and (1.4) placing the alumina fiber reacted in the step (1.3) in an oven for fast drying at the drying temperature of 120 ℃ for 30 minutes.
(2) And (3) heat treatment: placing the alumina flexible fiber in a sintering furnace, heating to 650 ℃ at a heating rate of 10 ℃/min, and then naturally cooling. And (3) quickly rinsing the aluminum oxide flexible fiber subjected to heat treatment for 15 seconds by using hydrofluoric acid with the mass percentage concentration of 1.5%, and rinsing the aluminum oxide flexible fiber by using clear water.
(3) Spraying the high molecular emulsion on the alumina flexible fiber in a spray form to carry out high molecular coating and heat curing treatment. The curing temperature is 70 ℃; curing time: for 1 hour.
The formula and the adding sequence of the polymer emulsion are as follows:
in the embodiment, the tensile strength of the alumina flexible fiber before modification is 1.015GPa, and the tensile strength of the alumina flexible fiber after treatment is 1.325 GPa; the maximum service temperature before modification was (1400 ℃ C.), and after modification, the maximum service temperature was 1450 ℃ in terms of a thermal shrinkage of 2%.
Example 4
(1) In-situ synthesis of nano SiO on surface of alumina flexible fiber2Film(s)
(1.1) fiber surface purification: putting the alumina flexible fiber into alcohol for ultrasonic treatment for 2 hours, and fully drying;
(1.2) preparation of a polymerization solution: taking acid silica sol with solid content of 30%, taking KH-550 as a catalyst and an acid-base regulator, regulating the pH value to 6, and stirring for 20 minutes for later use;
(1.3) in-situ polymerization: soaking the fiber in the step (1.1) in the polymerization solution in the step (1.2) for 3 hours;
and (1.4) placing the alumina fiber reacted in the step (1.3) in an oven for fast drying, wherein the drying temperature is 120 ℃, and the drying time is 10 minutes.
(2) And (3) heat treatment: placing the alumina flexible fiber in a sintering furnace, heating to 650 ℃ at a heating rate of 10 ℃/min, and then naturally cooling. And (3) quickly rinsing the aluminum oxide flexible fiber subjected to heat treatment for 15 seconds by using hydrofluoric acid with the mass percentage concentration of 1.5%, and rinsing the aluminum oxide flexible fiber by using clear water.
(3) Spraying the high molecular emulsion on the alumina flexible fiber in a spray form to carry out high molecular coating and heat curing treatment. The curing temperature is 60 ℃; curing time: for 1 hour.
The formula and the adding sequence of the polymer emulsion are as follows:
in this embodiment, the tensile strength of the alumina flexible fiber before modification is 1.015GPa, and the tensile strength of the alumina flexible fiber after treatment is 1.447 GPa; the maximum service temperature before modification was 1400 ℃ and after modification was 1450 ℃ (in terms of thermal shrinkage of 2%).
Example 5
(1) In-situ synthesis of nano SiO on mullite flexible fiber surface2Film(s)
(1.1) fiber surface purification: putting the mullite flexible fiber into alcohol for ultrasonic treatment for 1 hour, and fully drying;
(1.2) preparation of a polymerization solution: taking acid silica sol with solid content of 30%, taking ammonia water as a catalyst and an acid-base regulator, regulating the pH value to 6, and stirring for 20 minutes for later use;
(1.3) in-situ polymerization: soaking the fiber in the step (1.1) in the polymerization solution in the step (1.2) for 2 hours;
and (1.4) placing the mullite fiber reacted in the step (1.3) in an oven for quick drying, wherein the drying temperature is 110 ℃, and the drying time is 20 minutes.
(2) And (3) heat treatment: placing the mullite flexible fiber in a sintering furnace, heating to 650 ℃ at a heating rate of 10 ℃/min, and then naturally cooling. And (3) quickly rinsing the mullite flexible fiber subjected to heat treatment for 15 seconds by using hydrofluoric acid with the mass percentage concentration of 1.5%, and rinsing the mullite flexible fiber by using clear water.
(3) Spraying a macromolecule emulsion on mullite flexible fiber in a spray form to perform macromolecule coating and thermosetting treatment, wherein the curing temperature is 60 ℃; curing time: for 1.5 hours.
The formula and the adding sequence of the polymer emulsion are as follows:
in the embodiment, the tensile strength of the mullite flexible fiber before modification is 0.868GPa, and the tensile strength of the alumina flexible fiber after treatment is 1.040 GPa; before modification, the maximum service temperature is 1450 ℃, and after modification, the maximum service temperature is 1480 ℃ (based on the thermal shrinkage rate of 2%).
Example 6
(1) In-situ synthesis of nano SiO on surface of alumina flexible fiber2Film(s)
(1.1) fiber surface purification: putting the alumina flexible fiber into alcohol for ultrasonic treatment for 1 hour, and fully drying;
(1.2) preparation of a polymerization solution: mixing 10g of ethyl orthosilicate and 250g of propanol, correctly adjusting the pH to 8.5 by using L-arginine as a catalyst and an acid-base regulator, and stirring for 20 minutes;
(1.3) in-situ polymerization: soaking the fiber in the step (1.1) in the polymerization solution in the step (1.2) for 2 hours;
and (1.4) placing the alumina fiber reacted in the step (1.3) in an oven for fast drying, wherein the drying temperature is 120 ℃, and the drying time is 10 minutes.
(2) And (3) heat treatment: placing the alumina flexible fiber in a sintering furnace, heating to 650 ℃ at a heating rate of 10 ℃/min, and then naturally cooling. And (3) quickly rinsing the aluminum oxide flexible fiber subjected to heat treatment for 15 seconds by using hydrofluoric acid with the mass percentage concentration of 1.5%, and rinsing the aluminum oxide flexible fiber by using clear water.
(3) Spraying a high-molecular emulsion on the alumina flexible fiber in a spray form to perform high-molecular coating and thermosetting treatment, wherein the curing temperature is 60 ℃; curing time: for 1 hour.
The formula and the adding sequence of the polymer emulsion are as follows:
in this embodiment, the tensile strength of the alumina flexible fiber before modification is 1.430GPa, and the tensile strength of the alumina flexible fiber after treatment is 1.447 GPa; the maximum service temperature before modification was 1400 ℃ and after modification was 1450 ℃ (in terms of thermal shrinkage of 2%).
Example 7
(1) In-situ synthesis of nano SiO on mullite flexible fiber surface2Film(s)
(1.1) fiber surface purification: putting the alumina flexible fiber into alcohol for ultrasonic treatment for 2 hours, and fully drying;
(1.2) preparation of a polymerization solution: mixing 20g of ethyl orthosilicate and 250g of propanol, adjusting the pH to 9 by using L-arginine as a catalyst and an acid-base regulator, and stirring for 20 minutes;
(1.3) in-situ polymerization: soaking the fiber in the step (1.1) in the polymerization solution in the step (1.2) for 3 hours;
and (1.4) placing the alumina fiber reacted in the step (1.3) in an oven for fast drying, wherein the drying temperature is 130 ℃, and the drying time is 15 minutes.
(2) And (3) heat treatment: placing the mullite flexible fiber in a sintering furnace, heating to 650 ℃ at a heating rate of 10 ℃/min, and then naturally cooling. And (3) quickly rinsing the mullite flexible fiber subjected to heat treatment for 15 seconds by using hydrofluoric acid with the mass percentage concentration of 1.5%, and rinsing the mullite flexible fiber by using clear water.
(3) Spraying a macromolecule emulsion on mullite flexible fiber in a spray form to perform macromolecule coating and thermosetting treatment, wherein the curing temperature is 60 ℃; curing time: for 1.5 hours.
The formula and the adding sequence of the polymer emulsion are as follows:
in the embodiment, the tensile strength of the mullite flexible fiber before modification is 0.868GPa, and the tensile strength of the alumina flexible fiber after treatment is 1.095 GPa; the maximum service temperature before modification was 1400 ℃ and after modification was 1450 ℃ (in terms of thermal shrinkage of 2%).
Claims (7)
1. A method of enhancing the performance of an alumina flexible fiber comprising the steps of:
(1) in-situ synthesis of nano SiO2Film formation: under the action of silicon source and catalyst, quickly hydrolyzing and condensing on the surface of alumina flexible fiber to form SiO2Nanoparticles;
(2) carrying out heat treatment and surface roughening treatment on the alumina flexible fiber obtained in the step (1);
(3) carrying out polymer film covering and thermosetting treatment on the alumina flexible fiber treated in the step (2);
the heat treatment temperature in the step (2) is 650-750 ℃;
the surface roughening treatment adopts hydrofluoric acid rapid rinsing or physical sanding treatment;
the polymer film coating method in the step (3) comprises the following steps: spraying the high molecular emulsion on the alumina flexible fiber in a spray form; the polymer emulsion is one of the following emulsions,
polymer emulsion one: the polymer emulsion comprises the following raw materials in parts by weight:
100 portions of water
0.6-1 part of coupling agent
3-3.5 parts of macromolecular main film-forming agent
0.3-0.5 part of plasticizer
0.2-0.8 part of lubricant
0.05-0.15 part of antistatic agent
0.3-0.5 part of softener
Mixing the raw materials in sequence according to the proportion and the sequence, and dispersing for 3 hours for later use;
or
And B, high-molecular emulsion II: the polymer emulsion comprises the following raw materials in parts by weight:
100 portions of water
0.6-1 part of coupling agent
3-3.5 parts of macromolecular main film-forming agent
0.4-0.8 part of polymer auxiliary film-forming agent
0.4-0.8 part of polymer auxiliary film-forming agent II
0.3-0.5 part of plasticizer
0.2-0.8 part of lubricant
0.05-0.15 part of antistatic agent
Mixing the raw materials in sequence according to the proportion and the sequence, and dispersing for 3 hours for later use;
the heat curing treatment conditions in the step (3) are as follows: the curing temperature is 55-70 ℃; curing time: 1-1.5 hours.
2. The method of claim 1, wherein the silicon source is one of ethyl orthosilicate, silica sol or silica dispersion, and the catalyst is one of L-arginine, ammonia water or KH-550.
3. The method for enhancing the performance of the alumina flexible fiber according to the claim 1 or 2, characterized in that, the in-situ synthesis of the nano SiO in the step (1)2The specific method of the film comprises the following steps:
(1.1) putting the alumina flexible fiber into alcohol for ultrasonic treatment, and fully drying;
(1.2) adding a catalyst to a silicon source and adjusting the pH to obtain a polymerization solution,
(1.3) soaking the fiber in the step (1.1) in the polymerization solution in the step (1.2) and reacting for a certain time;
and (1.4) drying the alumina fiber reacted in the step (1.3) in an oven.
4. The method for enhancing the performance of the alumina flexible fiber according to claim 3, wherein the preparation method of the polymerization solution in the step (1.2) is one of the following methods:
the method comprises the following steps: mixing 10-20 parts by weight of ethyl orthosilicate with 250 parts by weight of propanol, and adjusting the pH to 8-9 by using L-arginine;
the second method comprises the following steps: taking acid silica sol with solid content of 30%, and adjusting pH to 6 with ammonia water or KH-550.
5. A method for enhancing the performance of alumina flexible fiber according to claim 3, characterized in that the reaction time in step (1.3) is more than 2 hours.
6. A method for enhancing the performance of alumina flexible fiber according to claim 3, wherein the drying condition in step (1.4) is: the drying temperature is 110-130 ℃, and the drying time is more than 10 minutes.
7. The method for enhancing the performance of the alumina flexible fiber according to claim 1, wherein in the first polymer emulsion:
the main polymer film forming agent is a commercial cationic PU-54 polyurethane emulsion,
the plasticizer is one or two of glycerol or ethylene glycol,
the coupling agent is one or two of KH-550 and KH-560,
the lubricant is a cationic lubricant and is a cationic lubricant,
the antistatic agent is fatty acid potassium salt,
the softener is polyethyleneimine;
in the second polymer emulsion:
the main polymer film-forming agent is a commercial cationic epoxy resin emulsion,
the first macromolecule auxiliary film-forming agent is water-soluble epoxy resin,
the second macromolecule auxiliary film-forming agent is polyvinyl alcohol, including PVA1788 or PVA2488,
the plasticizer is glycerin, and the plasticizer is,
the coupling agent is KH-550 and KH-560,
the lubricant is a cationic lubricant and is a cationic lubricant,
the antistatic agent is fatty acid potassium salt.
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| CN104294591A (en) * | 2014-10-09 | 2015-01-21 | 华东理工大学 | Mullite fiber surface modification method |
| CN108585948A (en) * | 2018-03-19 | 2018-09-28 | 山东大学 | A kind of method that aluminium oxide base ceramic fibre surface is modified |
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| CN104294591A (en) * | 2014-10-09 | 2015-01-21 | 华东理工大学 | Mullite fiber surface modification method |
| CN108585948A (en) * | 2018-03-19 | 2018-09-28 | 山东大学 | A kind of method that aluminium oxide base ceramic fibre surface is modified |
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Denomination of invention: A method for enhancing the performance of flexible alumina fibers Effective date of registration: 20231228 Granted publication date: 20210914 Pledgee: Weihai commercial bank Limited by Share Ltd. Dongying branch Pledgor: Shandong Dongheng national fiber new material Co.,Ltd. Registration number: Y2023980074970 |