CN108625172B - A kind of processing method of chitin fiber - Google Patents
A kind of processing method of chitin fiber Download PDFInfo
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- CN108625172B CN108625172B CN201810385932.0A CN201810385932A CN108625172B CN 108625172 B CN108625172 B CN 108625172B CN 201810385932 A CN201810385932 A CN 201810385932A CN 108625172 B CN108625172 B CN 108625172B
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- 239000000835 fiber Substances 0.000 title claims abstract description 205
- 229920002101 Chitin Polymers 0.000 title claims abstract description 169
- 238000003672 processing method Methods 0.000 title claims abstract description 40
- 238000009955 starching Methods 0.000 claims abstract description 90
- 229920002472 Starch Polymers 0.000 claims abstract description 77
- 239000008107 starch Substances 0.000 claims abstract description 76
- 235000019698 starch Nutrition 0.000 claims abstract description 76
- 238000004513 sizing Methods 0.000 claims abstract description 60
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 48
- 238000001035 drying Methods 0.000 claims abstract description 41
- 230000002708 enhancing effect Effects 0.000 claims abstract description 41
- 238000004132 cross linking Methods 0.000 claims abstract description 26
- 238000000034 method Methods 0.000 claims abstract description 20
- 238000002166 wet spinning Methods 0.000 claims abstract description 12
- 238000004140 cleaning Methods 0.000 claims abstract description 6
- 239000007788 liquid Substances 0.000 claims description 55
- 239000003431 cross linking reagent Substances 0.000 claims description 29
- 238000002156 mixing Methods 0.000 claims description 27
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 24
- 238000002360 preparation method Methods 0.000 claims description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 22
- 239000008367 deionised water Substances 0.000 claims description 18
- 229910021641 deionized water Inorganic materials 0.000 claims description 18
- 239000004014 plasticizer Substances 0.000 claims description 15
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 14
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Natural products CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 11
- 235000019441 ethanol Nutrition 0.000 claims description 11
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 9
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 9
- 239000003086 colorant Substances 0.000 claims description 9
- 238000001291 vacuum drying Methods 0.000 claims description 9
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 6
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 6
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 5
- 239000002253 acid Substances 0.000 claims description 4
- LEQAOMBKQFMDFZ-UHFFFAOYSA-N glyoxal Chemical compound O=CC=O LEQAOMBKQFMDFZ-UHFFFAOYSA-N 0.000 claims description 4
- XHXFXVLFKHQFAL-UHFFFAOYSA-N phosphoryl trichloride Chemical compound ClP(Cl)(Cl)=O XHXFXVLFKHQFAL-UHFFFAOYSA-N 0.000 claims description 4
- 239000002994 raw material Substances 0.000 claims description 4
- 238000002791 soaking Methods 0.000 claims description 4
- 239000002904 solvent Substances 0.000 claims description 4
- 240000003183 Manihot esculenta Species 0.000 claims description 3
- 235000016735 Manihot esculenta subsp esculenta Nutrition 0.000 claims description 3
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 3
- 150000008065 acid anhydrides Chemical class 0.000 claims description 3
- 235000011187 glycerol Nutrition 0.000 claims description 3
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 3
- 239000000178 monomer Substances 0.000 claims description 3
- 235000006408 oxalic acid Nutrition 0.000 claims description 3
- 239000003208 petroleum Substances 0.000 claims description 3
- 229920000151 polyglycol Polymers 0.000 claims description 3
- 239000010695 polyglycol Substances 0.000 claims description 3
- 229920001592 potato starch Polymers 0.000 claims description 3
- 150000005846 sugar alcohols Chemical class 0.000 claims description 3
- LRWZZZWJMFNZIK-UHFFFAOYSA-N 2-chloro-3-methyloxirane Chemical compound CC1OC1Cl LRWZZZWJMFNZIK-UHFFFAOYSA-N 0.000 claims description 2
- 229920002261 Corn starch Polymers 0.000 claims description 2
- SXRSQZLOMIGNAQ-UHFFFAOYSA-N Glutaraldehyde Chemical compound O=CCCCC=O SXRSQZLOMIGNAQ-UHFFFAOYSA-N 0.000 claims description 2
- 239000004202 carbamide Substances 0.000 claims description 2
- 239000008120 corn starch Substances 0.000 claims description 2
- 229940099112 cornstarch Drugs 0.000 claims description 2
- AFOSIXZFDONLBT-UHFFFAOYSA-N divinyl sulfone Chemical compound C=CS(=O)(=O)C=C AFOSIXZFDONLBT-UHFFFAOYSA-N 0.000 claims description 2
- 150000002118 epoxides Chemical class 0.000 claims description 2
- 125000005909 ethyl alcohol group Chemical group 0.000 claims description 2
- 229940015043 glyoxal Drugs 0.000 claims description 2
- UGTZMIPZNRIWHX-UHFFFAOYSA-K sodium trimetaphosphate Chemical group [Na+].[Na+].[Na+].[O-]P1(=O)OP([O-])(=O)OP([O-])(=O)O1 UGTZMIPZNRIWHX-UHFFFAOYSA-K 0.000 claims description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims 1
- KRKNYBCHXYNGOX-UHFFFAOYSA-K Citrate Chemical compound [O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O KRKNYBCHXYNGOX-UHFFFAOYSA-K 0.000 claims 1
- 244000017020 Ipomoea batatas Species 0.000 claims 1
- 235000002678 Ipomoea batatas Nutrition 0.000 claims 1
- 229960000583 acetic acid Drugs 0.000 claims 1
- 239000002826 coolant Substances 0.000 claims 1
- 230000008961 swelling Effects 0.000 abstract description 11
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000002002 slurry Substances 0.000 description 18
- 230000008569 process Effects 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 8
- 229920001661 Chitosan Polymers 0.000 description 7
- 239000000654 additive Substances 0.000 description 5
- 230000000996 additive effect Effects 0.000 description 5
- 206010013786 Dry skin Diseases 0.000 description 4
- 239000000052 vinegar Substances 0.000 description 4
- 235000021419 vinegar Nutrition 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- GPRLSGONYQIRFK-UHFFFAOYSA-N hydron Chemical compound [H+] GPRLSGONYQIRFK-UHFFFAOYSA-N 0.000 description 3
- 238000002386 leaching Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000009987 spinning Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 229920006317 cationic polymer Polymers 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000005518 polymer electrolyte Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 235000019890 Amylum Nutrition 0.000 description 1
- 241000256135 Chironomus thummi Species 0.000 description 1
- 244000131522 Citrus pyriformis Species 0.000 description 1
- 239000004971 Cross linker Substances 0.000 description 1
- 102000004190 Enzymes Human genes 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 229920000881 Modified starch Polymers 0.000 description 1
- 230000003110 anti-inflammatory effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- -1 citric acid Ester Chemical class 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000002242 deionisation method Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 125000003700 epoxy group Chemical group 0.000 description 1
- 230000023597 hemostasis Effects 0.000 description 1
- 230000009878 intermolecular interaction Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000010977 jade Substances 0.000 description 1
- 239000008204 material by function Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000012783 reinforcing fiber Substances 0.000 description 1
- 229940100486 rice starch Drugs 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 230000002522 swelling effect Effects 0.000 description 1
- 239000004753 textile Substances 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
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/01—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with natural macromolecular compounds or derivatives thereof
- D06M15/03—Polysaccharides or derivatives thereof
- D06M15/11—Starch or derivatives thereof
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L17/00—Materials for surgical sutures or for ligaturing blood vessels ; Materials for prostheses or catheters
- A61L17/06—At least partially resorbable materials
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L17/00—Materials for surgical sutures or for ligaturing blood vessels ; Materials for prostheses or catheters
- A61L17/14—Post-treatment to improve physical properties
-
- 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
- D06M11/32—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 oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
- D06M11/36—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 oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
- D06M11/38—Oxides or hydroxides of elements of Groups 1 or 11 of the Periodic Table
-
- 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
- D06M11/72—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 metaphosphoric acids or their salts; with polyphosphoric acids or their salts; with perphosphoric 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
- 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
- D06M11/73—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 carbon or compounds thereof
- D06M11/76—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 carbon or compounds thereof with carbon oxides or carbonates
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- D—TEXTILES; PAPER
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- 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
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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
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/02—Natural fibres, other than mineral fibres
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- Engineering & Computer Science (AREA)
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- Textile Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Surgery (AREA)
- Vascular Medicine (AREA)
- Epidemiology (AREA)
- Chemical & Material Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Materials For Medical Uses (AREA)
- Artificial Filaments (AREA)
Abstract
The present invention relates to a kind of processing methods of chitin fiber, first chitin fiber finished product is axially stretched in sweller, the dry chitin fiber for obtaining enhancing after cleaning, then the chitin fiber of enhancing is immersed to dry to be crosslinked after uniform starching in sizing agent and starch starching chitin fiber is made, wherein chitin fiber manufactured goods are the chitin fiber shaped through wet spinning, starch starching chitin fiber is compared with chitin fiber finished product, its breaking strength improves 74.8~108.1%, the degree of orientation improves 35.3~43.2%, knot strength improves 69.4~104.3%.The present invention is using first to the method for drying crosslinking after chitin fiber swelling stretch processing then starching, greatly improve chitin fiber mechanical strength, simultaneously also with easy to operate, production cost is low, economic and environment-friendly and low power consumption and other advantages, great industrial application value.
Description
Technical field
The invention belongs to fiber reinforcement fields, are related to a kind of processing method of chitin fiber.
Background technique
Chitin fiber is from a wealth of sources, since it is with nontoxic, hemostasis, anti-inflammatory, good and can be in human body with human compatibility
The performances such as degradation, are used as Medical absorbable sutures and wound dressing under the action of interior enzyme, can also be mixed with other fibers
Garment material is done in spinning, but mechanical property is poor, therefore has important research to modified its mechanical property that enhances of chitin fiber
Meaning.
The method of common enhancing chitin fiber has: enhancing during crosslinking enhancing, composite strengthening and spinning technique.It is compound
The advantages of enhancing is used in mixed way with chitosan using other functional materials, can comprehensively utilize each material, but with other
The introducing of substance will affect the biocompatibility of chitosan；Draft fiber mainly uses hot-stretch in spinning technique, and heating can make
Intermolecular interaction weakens, but hot-stretch needs persistently to provide heat, and energy consumption is larger；Crosslinking enhancing uses difunctional substance pair
Chitin fiber crosslinking, increases the active force between macromolecular chain, at this stage, common crosslinking enhancing have using crosslinking sizing agent into
Row enhancing.
Traditional starching mode is mainly soaking paste mode, in recent years, High-pressure Sizing, prewetting sizing, cold starching and is dragged in paddle
The New Sizings methods such as slurry achieve huge progress.Wherein High-pressure Sizing can close yarn texture, reinforcing fiber wearability
Can, fiber filoplume is reduced, while loom efficiency can be improved；Prewetting sizing can improve midge condition, but it can make in stock tank
There is larger fluctuation in concentration of slurry；The slurry of common soaking paste method is intermolecular main by intermolecular force connection, to fiber
Mechanical property enhancing it is limited.
The mechanical property of fiber/yarn can be obviously increased using crosslinking sizing agent starching, however friendship cross-linking modified at present
Connection process is all before starching, and slurry concentration increases in cross-linking process, is unfavorable for subsequent starching.
Patent CN201510182592.8 discloses a kind of medium temperature textile sizing method, and its step are as follows: preparing first
Agent is starched, required clear water is added in mixing cirtern, stirring is started, obtained sizing agent dry product is added in mixing cirtern, it will be general
Lead to unmodified starch to be added in mixing cirtern, stir, sizing agent dry product is added again, continues to stir, then starts logical steam
Heating after heating, stops logical steam, insulated and stirred 30 minutes, is transported in stock tank with pump, start sizing machine, start sizing.This
Joined crosslinking agent in kind of method in the slurry, but cross-linking reaction occurs before starching, slurry viscosity increases, be unfavorable on
Slurry.As being crosslinked again after starching, this problem can avoid, but the correlation for not having starching post-crosslinking to handle at present is ground
Study carefully achievement report.
Therefore, study it is a kind of it is easy to operate, production cost is low, can significantly improve chitin fiber mechanical property and can guarantee
The processing method of its sizing process smoothly chitin fiber has a very important significance.
Summary of the invention
The purpose of the present invention overcome chitin fiber high production cost, poor mechanical property and due to cross-linking reaction occur upper
Increase slurry viscosity so as to cause the ill defect of fiber sizing process, provide it is a kind of it is easy to operate, be produced into
The processing method that this is low, can significantly improve chitin fiber mechanical property and can guarantee its sizing process smoothly chitin fiber
It has a very important significance.
In order to achieve the above object, the technical solution adopted by the present invention are as follows:
A kind of processing method of chitin fiber, first chitin fiber finished product is axially stretched in sweller, after cleaning
Then the dry chitin fiber for obtaining enhancing will be dried after uniform starching in the chitin fiber immersion sizing agent of enhancing and is crosslinked
Starch starching chitin fiber is made, the drying temperature is 45~50 DEG C, and cross-linking reaction occurs in this temperature range, simultaneously
Starch starching chitin fiber herein is either multifilament is also possible to monofilament, the shape of starch starching chitin fiber of the present invention
State includes but is not limited to this, different according to the difference of the chitin fiber finished product of immersion；
The chitin fiber manufactured goods are the chitin fiber shaped through wet spinning, it is of the invention through wet spinning at
The chitin fiber of shape is multifilament fiber, is stretched to multifilament fiber, and the tension of stretching preferably controls, but protection of the invention
Range is not limited in multifilament fiber, and monfil is equally applicable to the present invention, and only its tension is different from tension of the invention；
The starch starching chitin fiber compared with chitin fiber finished product, breaking strength improve 74.8~
108.1%, the degree of orientation improves 35.3~43.2%, and knot strength improves 69.4~104.3%.
As a preferred technical scheme:
A kind of processing method of chitin fiber as described above, the sweller are spirit of vinegar, dilute hydrochloric acid, oxalic acid or lemon
Lemon acid, the pH value of the sweller are 6.0~6.5, and sweller pH is excessively high cannot to achieve the purpose that swelling, and pH is too low, chitosan
It can dissolve；Protection scope of the present invention is not limited to that, can realize that the solvent of swelling function may be applicable to this to fiber
Invention；
The axial tension in sweller refers to that chitin fiber manufactured goods are totally submerged in sweller；Chitosan is fine
Dimension manufactured goods are partially submerged in sweller and the enhancing that can also be realized to chitin fiber are axially stretched, but reinforcing effect is omited
Difference；
The tension of the axial tension is 80~350cN, and draft temperature is 25~40 DEG C, and draw ratio is 1.1~1.9
Times, the drawing time is 1~3h.The tension of above-mentioned axial tension is too small, and strand cannot be in the movement of the effect of tension, tension mistake
Greatly, fiber can be pulled off, while the process of the swelling of chitosan needs the regular hour, and the time is short, and the purpose of swelling is not achieved.
A kind of processing method of chitin fiber as described above, the sizing agent by the Raw material processing of following parts by weight and
At:
A kind of processing method of chitin fiber as described above, the sizing agent by the Raw material processing of following parts by weight and
At:
A kind of processing method of chitin fiber as described above, the starch are selected from potato starch, tapioca, jade
One or more of rice starch and wheaten starch；
The crosslinking agent is sodium trimetaphosphate, phosphorus oxychloride, epoxychloropropane, glyoxal, glutaraldehyde, maleic anhydride, mixes
Close acid anhydrides, epoxide petroleum base monomer or divinylsulfone；
The plasticizer is ethyl alcohol, ethylene glycol, propylene glycol, glycerine, polyglycols, sugar alcohol, urea, citric acid or citric acid
Ester.
A kind of processing method of chitin fiber as described above, the sizing agent the preparation method comprises the following steps: by starch, hydrogen-oxygen
Change sodium and natrium carbonicum calcinatum is added in deionized water and carries out pre-gelatinized, gelatinization, is slowly dropped into cross-linking agent solution after cooling, then pass through
Vacuum defoamation handles to be used for the crosslinked starch sizing agent of chitin fiber starching.
A kind of processing method of chitin fiber as described above, the specific preparation step of the sizing agent are as follows:
(1) progress pre-gelatinized in deionized water is added in starch, plasticizer, sodium hydroxide and natrium carbonicum calcinatum and obtains liquid
I；
(2) liquid I is carried out being gelatinized obtained liquid II；
(3) after liquid II is cooled to room temperature, cross-linking agent solution is slowly dropped into the liquid II of stirring and obtains liquid
III；
(4) vacuum defoamation is carried out to liquid III to handle up to the crosslinked starch sizing agent for chitin fiber starching.
A kind of processing method of chitin fiber as described above, the temperature of the pre-gelatinized are 80~90 DEG C, pre-gelatinized
Time be 20~40min, the mixing speed of pre-gelatinized is 100~200rpm, and the effect of pre-gelatinized is so that unordered in starch
The intermolecular hydrogen bond of state disconnects, and can occur at a lower temperature, and pre-gelatinized starch viscosity is not high, and required mixing speed is not yet
It is high；The temperature of the gelatinization is 90~130 DEG C, and time of gelatinization is 50~90min, the mixing speed of gelatinization is 230~
The effect of 270rpm, gelatinization be so that in starch ordered state intermolecular hydrogen bond disconnect, need to occur at higher temperatures,
Amylum body complete swelling ruptures at this time, forms sticky uniform paste liquid, and required mixing speed is also corresponding to be increased；The crosslinking agent is molten
The concentration of liquid is 10~25wt%, and the solvent of cross-linking agent solution is water, and crosslinker concentration is too low, and crosslinking degree is inadequate；Crosslinking agent
Excessive concentration then can be excessively crosslinked；Described be slowly dropped into refers to 5~10 drops/s, be added dropwise it is too fast will cause crosslinking it is irregular；
The mixing speed of liquid II is 180~220rpm in step (3), and crosslinking agent is dispersed under the action of stirring
In system, uniform cross-linked structure is formed.
A kind of processing method of chitin fiber as described above, the cleaning are that the fiber after stretching is put into deionization
It is impregnated in water, soaking time is 0.5~1h, and the purpose of cleaning is to remove extra hydrogen ion, and the time is too short, and hydrogen ion is not
It can be completely removed, overlong time influences production efficiency；
Described dry using drying mode, drying temperature is 60~80 DEG C, and the time is 3~4h；
The preparatory drying and processing of chitin fiber manufactured goods, temperature are 60~80 DEG C, and the time is 1~3h.
A kind of processing method of chitin fiber as described above, to being dried after starch starching chitin fiber showering colorant
It is dry, then 30~60min of medicinal alcohol is immersed, final vacuum drying is packed up to suture.
Invention mechanism:
Chitin fiber finished product by being first axially stretched in sweller and then being dipped in sizing agent again by the present invention
A kind of starch starching chitin fiber that mechanical property is good has been made in drying crosslinking after uniform starching, in swelling drawing process,
Contain a large amount of amino on chitin fiber strand, combined with the hydrogen ion ionized in acid, forms NH3 +, turn chitosan
Become cationic polymer electrolyte, destroy hydrogen bond structure, make its strand that a degree of solution occur and twine, is formed a kind of molten
Swollen body.After the cationic polymer electrolyte in solution reaches certain amount, chitosan macromolecular degree of swelling increases, until
It is completely dissolved, the chitin fiber intermolecular force under solvent swelling state is weak, at this time due to the presence of tension, is in fiber and draws
State is stretched, increases molecular chain orientation degree, crystallinity with the increase of external tension, crystallization tends to be complete, and it is strong to improve fiber
Degree and modulus；
In sizing process, before starching, the combination that can obviously increase slurry and fiber/yarn is crosslinked to sizing agent
Intensity, cross-linking reaction generally requires and could occur under liquid environment in currently available technology, i.e., crosslinking agent and slurry before starching
Reaction is crosslinked, and the slurry concentration after being crosslinked increases, and is unfavorable for subsequent starching.Due in the prior art to sizing agent into
The row crosslinking usually crosslinking agent before starching is crosslinked with slurry to react, and the slurry concentration after crosslinking increases, and is unfavorable for subsequent
Starching, and the present invention from original is cross-linked in situ technology using chitin fiber starching, by crosslinking agent and slurry before starching
Material mixing, carries out starching, and the fiber after starching dries Shi Caineng at a certain temperature and crosslinks reaction, both ensure that friendship in this way
The problem of connection reaction occurs after starching, also avoids slurry viscosity increase.The processing technique of starching post-crosslinking and existing friendship
The problem of starching mode is compared after connection, on the one hand avoids slurry viscosity increase, on the other hand, starching post-crosslinking its crosslinking agent,
The combination of slurry and fiber is even closer, and more preferably, properties of product are more preferable for the degree of cross linking and the rate of sizing for obtaining product.The utility model has the advantages that
(1) processing method of a kind of chitin fiber of the invention stretches fiber in the state of fiber swelling
It is modified, the mechanical property of fiber is effectively improved, achievees the purpose that fiber surface modification；
(2) processing method of a kind of chitin fiber of the invention, is utilized diluted acid to the swelling action of chitin fiber,
Realize the processing of tension, have it is easy to operate, production cost is low, economic and environment-friendly and low power consumption and other advantages, there are larger works
Industry application value；
(3) processing method of a kind of chitin fiber of the invention ensure that fibre due to the presence of tension in swelling process
Dimension is in tensional state, increases fiber molecule chain orientation degree and crystallinity, and crystal grain also becomes larger, and crystallization tends to be complete, is conducive to
The raising of fibre strength and modulus；
(4) processing method of a kind of chitin fiber of the invention avoids crosslinking slurry concentration and increases in starching post-crosslinking
Greatly, it is unfavorable for the problem of starching, great application prospect；
(5) processing method of a kind of chitin fiber of the invention, starching chitin fiber beam are dried at a certain temperature,
It is cross-linked in situ reaction, one layer of fine and close cross-linked network structure is formed in fiber surface, greatly improves chitin fiber
Mechanical strength, the chitin fiber after starching is widely used, can be made into suture.
Specific embodiment
The invention will be further elucidated with reference to specific embodiments.It should be understood that these embodiments are merely to illustrate this hair
It is bright rather than limit the scope of the invention.In addition, it should also be understood that, after reading the content taught by the present invention, art technology
Personnel can make various changes or modifications the present invention, and such equivalent forms equally fall within the application the appended claims and limited
Fixed range.
Embodiment 1
A kind of processing method of chitin fiber, steps are as follows:
(1) chitin fiber of preparation enhancing；
The chitin fiber shaped through wet spinning is subjected to preparatory drying and processing 1.5h at 75 DEG C first, then leaching completely
It is then 210cN in tension, draft temperature is 40 DEG C, and draw ratio is not in the sink for the spirit of vinegar for being 6.0 equipped with pH
1h is axially stretched under conditions of 1.5, finally the fiber after stretching is put into deionized water dry in 70 DEG C of drying after impregnating 0.8h
Dry 3.5h obtains the chitin fiber of enhancing；
(2) preparation of sizing agent；
(2.1) progress pre-gelatinized in deionized water is added in starch, sodium hydroxide and natrium carbonicum calcinatum and obtains liquid I,
The temperature of middle pre-gelatinized is 80 DEG C, and the time of pre-gelatinized is 40min, and the mixing speed of pre-gelatinized is 100rpm；
(2.2) liquid I is carried out being gelatinized obtained liquid II, wherein the temperature being gelatinized is 130 DEG C, the time of gelatinization is
50min, the mixing speed of gelatinization are 270rpm；
(2.3) after liquid II is cooled to room temperature, the cross-linking agent solution that concentration is 10wt% is added dropwise to 8 drops/s speed
Liquid III is obtained in the liquid II that mixing speed is 180rpm；
(2.4) vacuum defoamation is carried out to liquid III to handle up to the crosslinked starch sizing agent for chitin fiber starching,
Wherein each component additive amount is as follows:
(3) starch starching chitin fiber is prepared；
The chitin fiber of the middle enhancing prepared of step (1) is immersed in final sizing agent obtained and is dried after uniform starching
It is crosslinked and starch starching chitin fiber is made, drying temperature is 50 DEG C, and final starch starching chitin fiber obtained and shell are poly-
Sugared fibrous finished product is compared, and breaking strength improves 107.2%, and the degree of orientation improves 35.3%, and knot strength improves 103.7%.
To drying after starch starching chitin fiber showering colorant obtained above, then medicinal alcohol 60min is immersed, most
Vacuum drying is packed up to suture eventually.
Embodiment 2
A kind of processing method of chitin fiber, steps are as follows:
(1) chitin fiber of preparation enhancing；
The chitin fiber shaped through wet spinning is subjected to preparatory drying and processing 3h at 60 DEG C first, is then totally submerged
It is then 80cN in tension, draft temperature is 35 DEG C, and draw ratio is 1.1 in the sink for the spirit of vinegar for being 6.3 equipped with pH
Under the conditions of 2h is axially stretched, finally the fiber after stretching is put into deionized water after impregnating 0.5h and dries 3h in 65 DEG C of drying,
Obtain the chitin fiber of enhancing；
(2) preparation of sizing agent；
(2.1) progress pre-gelatinized in deionized water is added in starch, sodium hydroxide and natrium carbonicum calcinatum and obtains liquid I,
The temperature of middle pre-gelatinized is 90 DEG C, and the time of pre-gelatinized is 20min, and the mixing speed of pre-gelatinized is 200rpm；
(2.2) liquid I is carried out being gelatinized obtained liquid II, wherein the temperature being gelatinized is 90 DEG C, the time of gelatinization is
90min, the mixing speed of gelatinization are 230rpm；
(2.3) after liquid II is cooled to room temperature, the cross-linking agent solution that concentration is 25wt% is instilled with 10 drops/s speed
Liquid III is obtained into the liquid II that mixing speed is 180rpm；
(2.4) vacuum defoamation is carried out to liquid III to handle up to the crosslinked starch sizing agent for chitin fiber starching,
Wherein each component additive amount is as follows:
(3) starch starching chitin fiber is prepared；
The chitin fiber of the middle enhancing prepared of step (1) is immersed in final sizing agent obtained and is dried after uniform starching
It is crosslinked and starch starching chitin fiber is made, drying temperature is 45 DEG C, and final starch starching chitin fiber obtained and shell are poly-
Sugared fibrous finished product is compared, and breaking strength improves 74.8%, and the degree of orientation improves 36.1%, and knot strength improves 69.4%.
To drying after starch starching chitin fiber showering colorant obtained above, then medicinal alcohol 60min is immersed, most
Vacuum drying is packed up to suture eventually.
Embodiment 3
A kind of processing method of chitin fiber, steps are as follows:
(1) chitin fiber of preparation enhancing；
The chitin fiber shaped through wet spinning is subjected to preparatory drying and processing 2h at 65 DEG C first, is then totally submerged
It is then 300cN in tension, draft temperature is 25 DEG C, draw ratio 1.8 in the sink for the spirit of vinegar for being 6.1 equipped with pH
Under conditions of 1.5h is axially stretched, finally by the fiber after stretching be put into deionized water impregnate 0.6h after in 60 DEG C of drying dryings
4h obtains the chitin fiber of enhancing；
(2) preparation of sizing agent；
(2.1) progress pre-gelatinized in deionized water is added in starch, plasticizer, sodium hydroxide and natrium carbonicum calcinatum and obtains liquid
Body I, wherein the temperature of pre-gelatinized is 85 DEG C, and the time of pre-gelatinized is 30min, and the mixing speed of pre-gelatinized is 150rpm；
(2.2) liquid I is carried out being gelatinized obtained liquid II, wherein the temperature being gelatinized is 110 DEG C, the time of gelatinization is
70min, the mixing speed of gelatinization are 250rpm；
(2.3) after liquid II is cooled to room temperature, the cross-linking agent solution that concentration is 17wt% is added dropwise to 5 drops/s speed
Liquid III is obtained in the liquid II that mixing speed is 200rpm；
(2.4) vacuum defoamation is carried out to liquid III to handle up to the crosslinked starch sizing agent for chitin fiber starching,
Wherein each component additive amount is as follows:
(3) starch starching chitin fiber is prepared；
The chitin fiber of the middle enhancing prepared of step (1) is immersed in final sizing agent obtained and is dried after uniform starching
It is crosslinked and starch starching chitin fiber is made, drying temperature is 48 DEG C, and final starch starching chitin fiber obtained and shell are poly-
Sugared fibrous finished product is compared, and breaking strength improves 93.7%, and the degree of orientation improves 36.8%, and knot strength improves 89.1%.
To drying after starch starching chitin fiber showering colorant obtained above, then medicinal alcohol 45min is immersed, most
Vacuum drying is packed up to suture eventually.
Embodiment 4
A kind of processing method of chitin fiber, steps are as follows:
(1) chitin fiber of preparation enhancing；
The chitin fiber shaped through wet spinning is subjected to preparatory drying and processing 1h at 75 DEG C first, is then totally submerged
It is then 180cN in tension, draft temperature is 30 DEG C, draw ratio 1.4 in the sink for the dilute hydrochloric acid for being 6.5 equipped with pH
Under conditions of 3h is axially stretched, finally the fiber after stretching is put into deionized water after impregnating 1h and dries 3h in 75 DEG C of drying,
Obtain the chitin fiber of enhancing；
(2) preparation of sizing agent；
(2.1) progress pre-gelatinized in deionized water is added in starch, plasticizer, sodium hydroxide and natrium carbonicum calcinatum and obtains liquid
Body I, wherein the temperature of pre-gelatinized is 82 DEG C, and the time of pre-gelatinized is 25min, and the mixing speed of pre-gelatinized is 120rpm；
(2.2) liquid I is carried out being gelatinized obtained liquid II, wherein the temperature being gelatinized is 100 DEG C, the time of gelatinization is
80min, the mixing speed of gelatinization are 260rpm；
(2.3) after liquid II is cooled to room temperature, the cross-linking agent solution that concentration is 15wt% is added dropwise to 6 drops/s speed
Liquid III is obtained in the liquid II that mixing speed is 210rpm；
(2.4) vacuum defoamation is carried out to liquid III to handle up to the crosslinked starch sizing agent for chitin fiber starching,
Wherein each component additive amount is as follows:
(3) starch starching chitin fiber is prepared；
The chitin fiber of the middle enhancing prepared of step (1) is immersed in final sizing agent obtained and is dried after uniform starching
It is crosslinked and starch starching chitin fiber is made, drying temperature is 46 DEG C, and final starch starching chitin fiber obtained and shell are poly-
Sugared fibrous finished product is compared, and breaking strength improves 81.6%, and the degree of orientation improves 37.4%, and knot strength improves 77.5%.
To drying after starch starching chitin fiber showering colorant obtained above, then medicinal alcohol 40min is immersed, most
Vacuum drying is packed up to suture eventually.
Embodiment 5
A kind of processing method of chitin fiber, steps are as follows:
(1) chitin fiber of preparation enhancing；
The chitin fiber shaped through wet spinning is subjected to preparatory drying and processing 2.5h at 70 DEG C first, then leaching completely
It is then 350cN in tension, draft temperature is 40 DEG C, and draw ratio is not in the sink for the dilute hydrochloric acid for being 6.2 equipped with pH
2.5h is axially stretched under conditions of 1.9, finally the fiber after stretching is put into deionized water after impregnating 0.5h and is dried at 80 DEG C
Dry 3h, that is, obtain the chitin fiber of enhancing；
(2) preparation of sizing agent；
(2.1) progress pre-gelatinized in deionized water is added in starch, plasticizer, sodium hydroxide and natrium carbonicum calcinatum and obtains liquid
Body I, wherein the temperature of pre-gelatinized is 86 DEG C, and the time of pre-gelatinized is 29min, and the mixing speed of pre-gelatinized is 180rpm；
(2.2) liquid I is carried out being gelatinized obtained liquid II, wherein the temperature being gelatinized is 110 DEG C, the time of gelatinization is
80min, the mixing speed of gelatinization are 240rpm；
(2.3) after liquid II is cooled to room temperature, the cross-linking agent solution that concentration is 20wt% is instilled with 10 drops/s speed
Liquid III is obtained into the liquid II that mixing speed is 205rpm；
(2.4) vacuum defoamation is carried out to liquid III to handle up to the crosslinked starch sizing agent for chitin fiber starching,
Wherein each component additive amount is as follows:
(3) starch starching chitin fiber is prepared；
The chitin fiber of the middle enhancing prepared of step (1) is immersed in final sizing agent obtained and is dried after uniform starching
It is crosslinked and starch starching chitin fiber is made, drying temperature is 49 DEG C, and final starch starching chitin fiber obtained and shell are poly-
Sugared fibrous finished product is compared, and breaking strength improves 96.4%, and the degree of orientation improves 39.2%, and knot strength improves 91.8%.
Embodiment 6
A kind of processing method of chitin fiber, steps are as follows:
(1) chitin fiber of preparation enhancing；
The chitin fiber shaped through wet spinning is subjected to preparatory drying and processing 3h at 80 DEG C first, is then totally submerged
It is then 300cN in tension, draft temperature is 25 DEG C, draw ratio 1.8 in the sink for the dilute hydrochloric acid for being 6.0 equipped with pH
Under conditions of 2h is axially stretched, finally by the fiber after stretching be put into deionized water impregnate 0.9h after in 60 DEG C of drying dryings
3.5h obtains the chitin fiber of enhancing；
(2) preparation of sizing agent；
For the preparation step of sizing agent substantially with embodiment 5, difference is that the type of starch, plasticizer and crosslinking agent is different,
Wherein starch is potato starch, and plasticizer is glycerine, and crosslinking agent is maleic anhydride；
(3) starch starching chitin fiber is prepared；
The chitin fiber of the middle enhancing prepared of step (1) is immersed in final sizing agent obtained and is dried after uniform starching
Be crosslinked and starch starching chitin fiber be made, final obtained starch starching chitin fiber compared with chitin fiber finished product,
Its breaking strength improves 108.1%, and the degree of orientation improves 40.7%, and knot strength improves 104.3%.
To drying after starch starching chitin fiber showering colorant obtained above, then medicinal alcohol 58min is immersed, most
Vacuum drying is packed up to suture eventually.
Embodiment 7
A kind of processing method of chitin fiber, steps are as follows:
(1) chitin fiber of preparation enhancing；
The chitin fiber shaped through wet spinning is subjected to preparatory drying and processing 1.5h at 65 DEG C first, then leaching completely
It is then 120cN in tension, draft temperature is 25 DEG C, draw ratio 1.2 not in the sink for the oxalic acid for being 6.5 equipped with pH
Under conditions of 2h is axially stretched, finally by the fiber after stretching be put into deionized water impregnate 0.6h after in 80 DEG C of drying dryings
3.5h obtains the chitin fiber of enhancing；
(2) preparation of sizing agent；
For the preparation step of sizing agent substantially with embodiment 5, difference is that the type of starch, plasticizer and crosslinking agent is different,
Wherein starch is tapioca, and plasticizer is polyglycols, and crosslinking agent is mixed acid anhydride；
(3) starch starching chitin fiber is prepared；
The chitin fiber of the middle enhancing prepared of step (1) is immersed in final sizing agent obtained and is dried after uniform starching
Be crosslinked and starch starching chitin fiber be made, final obtained starch starching chitin fiber compared with chitin fiber finished product,
Its breaking strength improves 84.6%, and the degree of orientation improves 42.5%, and knot strength improves 79.7%.
To drying after starch starching chitin fiber showering colorant obtained above, then medicinal alcohol 50min is immersed, most
Vacuum drying is packed up to suture eventually.
Embodiment 8
A kind of processing method of chitin fiber, steps are as follows:
(1) chitin fiber of preparation enhancing；
The chitin fiber shaped through wet spinning is subjected to preparatory drying and processing 3h at 70 DEG C first, is then totally submerged
It is then 290cN in tension, draft temperature is 40 DEG C, draw ratio 1.7 in the sink for the citric acid for being 6.1 equipped with pH
Under conditions of 3h is axially stretched, finally by the fiber after stretching be put into deionized water impregnate 0.5h after in 60 DEG C of drying dryings
3.5h obtains the chitin fiber of enhancing；
(2) preparation of sizing agent；
For the preparation step of sizing agent substantially with embodiment 5, difference is that the type of starch, plasticizer and crosslinking agent is different,
Wherein starch is the mixture of cornstarch and wheaten starch mass ratio 1:2, and plasticizer is sugar alcohol, and crosslinking agent is epoxide
Petroleum base monomer；
(3) starch starching chitin fiber is prepared；
The chitin fiber of the middle enhancing prepared of step (1) is immersed in final sizing agent obtained and is dried after uniform starching
Be crosslinked and starch starching chitin fiber be made, final obtained starch starching chitin fiber compared with chitin fiber finished product,
Its breaking strength improves 90.2%, and the degree of orientation improves 43.2%, and knot strength improves 84.4%.
To drying after starch starching chitin fiber showering colorant obtained above, then medicinal alcohol 52min is immersed, most
Vacuum drying is packed up to suture eventually.
Embodiment 9~12
A kind of processing method of chitin fiber, step is substantially the same manner as Example 5, the difference is that, sizing agent
In preparation process, the type of used starch, plasticizer and crosslinking agent is different, final starch starching chitin fiber obtained
Compared with chitin fiber finished product, breaking strength is improved, the degree of orientation improves and the enhancing rate of knot strength is also different, is formed sediment
Powder, the type of plasticizer and crosslinking agent, enhancing rate are as shown in the table:
Claims (10)
1. a kind of processing method of chitin fiber, it is characterized in that: first chitin fiber finished product is axially stretched in sweller,
Then the chitin fiber of enhancing is immersed in sizing agent and is dried after uniform starching by the dry chitin fiber for obtaining enhancing after cleaning
Starch starching chitin fiber is made in dry crosslinking, and the drying temperature is 45~50 DEG C；
The chitin fiber manufactured goods are the chitin fiber shaped through wet spinning；
For the starch starching chitin fiber compared with chitin fiber finished product, breaking strength improves 74.8~108.1%, takes
35.3~43.2% are improved to degree, knot strength improves 69.4~104.3%.
2. a kind of processing method of chitin fiber according to claim 1, which is characterized in that the sweller is dilute vinegar
Acid, dilute hydrochloric acid, oxalic acid or citric acid, the pH value of the sweller are 6.0~6.5；
The axial tension in sweller refers to that chitin fiber manufactured goods are totally submerged in sweller；
The tension of the axial tension is 80~350cN, and draft temperature is 25~40 DEG C, and draw ratio is 1.1~1.9 times, is drawn
Time is 1~3h.
3. a kind of processing method of chitin fiber according to claim 1, which is characterized in that the sizing agent is by following
The Raw material processing of parts by weight forms:
4. a kind of processing method of chitin fiber according to claim 3, which is characterized in that the sizing agent is by following
The Raw material processing of parts by weight forms:
5. a kind of processing method of chitin fiber according to claim 4, which is characterized in that the starch is selected from Ma Ling
One or more of sweet potato starch, tapioca, cornstarch and wheaten starch；
The crosslinking agent is sodium trimetaphosphate, phosphorus oxychloride, epoxychloropropane, glyoxal, glutaraldehyde, maleic anhydride, mixed acid
Acid anhydride, epoxide petroleum base monomer or divinylsulfone；
The plasticizer is ethyl alcohol, ethylene glycol, propylene glycol, glycerine, polyglycols, sugar alcohol, urea, citric acid or citrate.
6. a kind of processing method of chitin fiber according to claim 3, which is characterized in that the preparation of the sizing agent
Method are as follows: starch, sodium hydroxide and natrium carbonicum calcinatum are added in deionized water and carry out pre-gelatinized, gelatinization, it will crosslinking after cooling
Agent solution is slowly dropped into, then is handled through vacuum defoamation up to the crosslinked starch sizing agent of chitin fiber starching is used for.
7. a kind of processing method of chitin fiber according to claim 4, which is characterized in that the sizing agent it is specific
Preparation step are as follows:
(1) progress pre-gelatinized in deionized water is added in starch, plasticizer, sodium hydroxide and natrium carbonicum calcinatum and obtains liquid I；
(2) liquid I is carried out being gelatinized obtained liquid II；
(3) after liquid II is cooled to room temperature, cross-linking agent solution is slowly dropped into the liquid II of stirring and obtains liquid III；
(4) vacuum defoamation is carried out to liquid III to handle up to the crosslinked starch sizing agent for chitin fiber starching.
8. a kind of processing method of chitin fiber according to claim 7, which is characterized in that the temperature of the pre-gelatinized
It is 80~90 DEG C, the time of pre-gelatinized is 20~40min, and the mixing speed of pre-gelatinized is 100~200rpm；The temperature of the gelatinization
Degree is 90~130 DEG C, and the time of gelatinization is 50~90min, and the mixing speed of gelatinization is 230~270rpm；The crosslinking agent is molten
The concentration of liquid is 10~25wt%, and the solvent of cross-linking agent solution is water；Described be slowly dropped into refers to 5~10 drops/s；
The mixing speed of liquid II is 180~220rpm in step (3).
9. a kind of processing method of chitin fiber according to claim 1, which is characterized in that the cleaning is that will stretch
Fiber afterwards, which is put into deionized water, to be impregnated, and soaking time is 0.5~1h；
Described dry using drying mode, drying temperature is 60~80 DEG C, and the time is 3~4h；
The preparatory drying and processing of chitin fiber manufactured goods, temperature are 60~80 DEG C, and the time is 1~3h.
10. a kind of processing method of chitin fiber according to claim 1, which is characterized in that poly- to starch starching shell
It is dried after sugared fiber showering colorant, then immerses 30~60min of medicinal alcohol, final vacuum drying is packed up to medical sutures
Line.
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| 以乙二醛为交联剂的壳聚糖纤维交联机理探索;杨庆 等;《纤维素科学与技术》;20051231;第13卷(第4期);第13-20页 * |
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