CN115233458A - Processing technology for improving fluffy degree of white duck down - Google Patents

Processing technology for improving fluffy degree of white duck down Download PDF

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CN115233458A
CN115233458A CN202211016300.XA CN202211016300A CN115233458A CN 115233458 A CN115233458 A CN 115233458A CN 202211016300 A CN202211016300 A CN 202211016300A CN 115233458 A CN115233458 A CN 115233458A
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chitosan
white duck
duck down
polyurethane
clear water
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CN115233458B (en
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徐宇豪
马飞
孙玉江
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Yangzhou Junxiang Down Products Co ltd
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Yangzhou Junxiang Down Products Co ltd
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    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
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Abstract

The scheme relates to a processing technology for improving fluffy degree of white duck down, which comprises the following steps: pretreatment of white duck down: pre-separation, ash removal, fine separation and initial washing; dewatering and soaking the pretreated white duck down in finishing liquid, padding, and rinsing with clear water; dewatering the washed white duck down, adding into clear water, adding puffing auxiliary agent dispersed in water in advance, cleaning for 30min, and dewatering; soaking in 1-1.5 per mill sodium hypophosphite water solution for 30min, and dehydrating; s5: rinsing with clear water, dehydrating, and oven drying. The processing technology for the white duck down provided by the invention is simple in steps and convenient to operate; because the modified chitosan is introduced with the polymer chain of sodium allylsulfonate and acrylamide, the modified chitosan can effectively sterilize, and simultaneously has the effects of removing the content of grease in the down feather and reducing the residual grease rate in the down feather; by further advanced treatment of the fluffing auxiliary agent, the fluffiness of the down feather can be effectively improved.

Description

Processing technology for improving fluffy degree of white duck down
Technical Field
The invention relates to the technical field of down feather processing, in particular to a processing technology for improving fluffy degree of white duck down.
Background
Compared with the down feather which is a natural material with excellent heat retention, the cotton, silk, chemical fiber and other fibers are linear and hardened after long-term use, so that the heat retention performance and the comfort are influenced; the down feather is a mixture of the down feather and the down feather, and the down feather is in a three-dimensional spherical shape, so that the problem of hardening is avoided. However, the down feather is directly from goose and duck bodies, is an animal protein fiber and is accompanied by animal fat, so that a large amount of stains and various pathogenic microorganisms are carried, and if the down feather cannot be treated cleanly, the health of people can be endangered.
The existing production process of the antibacterial down generally comprises the following steps: pre-dividing, ash removing, fine dividing, primary washing, dehydrating, drying, cooling and packaging; in the traditional procedure of degreasing and resisting bacteria to down feather, the down feather is treated in the drying process by adopting agents such as trichloroisocyanuric acid and the like; although the method can effectively remove bacteria, the fluffiness of the down feather is weakened due to extremely strong oxidizability. Therefore, it is very necessary to research a processing technology for improving the filling power of the down feather with mild reaction conditions, convenient operation and high efficiency.
Disclosure of Invention
Aiming at the defects in the prior art, the antibacterial down feather takes chitosan as a basic raw material, is subjected to series modification, and can be applied to the treatment process of down feather, so that the antibacterial property and filling power of the down feather can be effectively improved.
In order to achieve the purpose, the invention provides the following technical scheme:
a processing technology for improving fluffy degree of white duck down comprises the following steps:
s1, white duck down pretreatment: pre-separating, ash removing, fine separating and primary washing;
s2, fine washing: dewatering and soaking the pretreated white duck down in finishing liquid, padding, and rinsing with clear water;
s3: dewatering the washed white duck down, adding into clear water, adding a fluffy auxiliary agent pre-dispersed in water, cleaning for 30min, and dewatering;
s4: soaking in 1-1.5 per mill sodium hypophosphite water solution for 30min, and dehydrating;
s5: rinsing with clear water, dehydrating and drying to obtain the final product;
wherein the finishing liquid is 5g/L of water solution of p (AM-co-ALS) grafted chitosan, and the structural formula is as follows:
Figure BDA0003812650700000021
m and n are respectively and independently integers of 10-20 and 5-10;
the puffing auxiliary agent comprises organic silicon quaternary ammonium salt and a chitosan/polyurethane-metal compound, and the preparation process of the chitosan/polyurethane-metal compound is as follows:
1) Preparing a polyurethane prepolymer: prepared by taking isophorone isocyanate, 3-dimethylamino-1, 2-propanediol, polyoxypropylene glycol and isopropanol as raw materials;
2) Modified chitosan: utilizing laccase to catalyze the graft copolymerization of the p-hydroxyphenylpropionic acid and the chitosan to prepare modified chitosan;
3) Preparing a chitosan/polyurethane-metal composite: dissolving modified chitosan in dimethyl sulfoxide, adding the mixture into a polyurethane prepolymer system, carrying out heat preservation reaction for 1h at 40 ℃, cooling to room temperature, adding water, rapidly stirring and emulsifying, dissolving nickel nitrate and ferric nitrate, slowly injecting the mixture into chitosan-polyurethane, continuously stirring, standing overnight, adding a sodium hydroxide solution, filtering, drying a precipitate, and grinding to obtain the chitosan-polyurethane composite material.
Further, the preparation process of the p (AM-co-ALS) grafted chitosan is as follows:
1) Acrylamide and sodium allylsulfonate are used as monomers, and are polymerized under the conditions that 4-cyano-4 (thiobenzoyl) valeric acid is used as a chain transfer agent and azobisisobutyronitrile is used as an initiator to obtain p (AM-co-ALS);
2) The amino group of the chitosan is protected by condensation reaction of benzaldehyde and the amino group, then the chitosan and p (AM-co-ALS) are subjected to esterification reaction, and the benzaldehyde is removed after the reaction is finished to obtain the p (AM-co-ALS) grafted chitosan.
Further, the molar ratio of acrylamide, sodium allylsulfonate, 4-cyano-4 (thiobenzoyl) pentanoic acid and azobisisobutyronitrile in the step S1 is 10-30.
Further, in the step S3, the mass ratio of the organic silicon quaternary ammonium salt to the chitosan/polyurethane-metal composite is 1 to 10; the mass ratio of the white duck down to the clear water is 1-20, and the mass ratio of the fluffy auxiliary agent to the clear water is 1-2g.
Further, the preparation process of the organosilicon quaternary ammonium salt is as follows:
1) Dispersing nano zinc oxide in absolute ethyl alcohol, performing ultrasonic dispersion for 1h, adding gamma-chloropropyltriethoxysilane into the solution, heating to 40-50 ℃, performing reflux stirring for 2h, performing suction filtration, washing with absolute ethyl alcohol, and drying to obtain ZnO/KH230;
2) Adding hexamethylenetetramine into a reaction bottle, and adding pyridine to completely dissolve the hexamethylenetetramine; ultrasonically dispersing ZnO/KH230 in a toluene solution, adding into a reaction bottle, setting the temperature at 110 ℃, heating and refluxing for 5-10 h by using microwaves, cooling and standing after the reaction is finished, and recrystallizing with acetone to obtain the organosilicon quaternary ammonium salt.
Further, the mass ratio of the nano zinc oxide to the gamma-chloropropyltriethoxysilane is 2; the mass ratio of the hexamethylenetetramine to the ZnO/KH230 is 1.
Further, the temperature in the fine washing process is set to be 70-80 ℃, and the temperature is kept for 30-100 min.
According to the scheme, the chitosan is modified, and the N-biguanide chitosan is prepared firstly, has higher antibacterial property compared with chitosan, so that the chitosan can keep electropositive property in a larger pH value range, and the stability of the molecules is improved; in addition, the antibacterial property can be improved by grafting and modifying the chitosan by the polymer of sodium allylsulfonate and acrylamide, and the electronegativity of the sulfonic acid group is high in combination degree with the N-biguanide chitosan through electrostatic adsorption, so that the durability is improved. The introduced sulfonic chitosan has a surface activity function to a certain extent, and further plays a role in removing the grease content in the down feather in the fine washing process, so that the residual grease rate in the down feather is reduced.
The filling power of the down feather after the fine washing is reduced, and the organic silicon quaternary ammonium salt and the chitosan/polyurethane-metal compound are used as a bulking aid to further process the down feather.
The organosilicon quaternary ammonium salt antibacterial agent belongs to a non-dissolution type antibacterial agent, has good durability, and can effectively make up the problem of poor durability of chitosan on one hand, thereby avoiding the problem of antibacterial failure; on the other hand, the flexibility of the down feather can be effectively improved by the organic silicon structure, the multi-head organic silicon quaternary ammonium salt is synthesized by the hexamethylenetetramine and the silane coupling agent, the antibacterial effect is good, the gamma-chloropropyltriethoxysilane coupling agent plays a role in bridging in the reaction process and wraps the nano zinc oxide particles in the organic silicon, and the organic silicon and the inorganic silicon are compounded, so that the antibacterial property is further improved, and the down feather has a more lasting antibacterial effect. The finishing liquid formed by the compounded antibacterial agent has good effect of sterilizing down feather, is low in usage amount and is more economical and efficient.
The aqueous polyurethane prepared from the chitosan/polyurethane-metal compound and the chitosan grafted with phenylpropionic acid are compounded with nickel and iron metal ions, and the metal is introduced to the down feather fibers to generate electrostatic effect, so that the filling power of the down feather can be improved; after being compounded with chitosan/polyurethane, the down feather fiber is combined more firmly; the chitosan plays an important role in inhibiting bacteria in the down feather treatment process, and the phenylpropionic acid structure provides certain rigidity and carboxyl to play a role in improving the filling power of the down feather; the polyurethane structure also gives down a softer hand.
The invention has the beneficial effects that: the processing technology for the white duck down provided by the invention is simple in steps and convenient to operate; firstly, removing impurities on the surface of down feather through conventional work of pre-separation, ash removal, fine separation, primary washing and the like, and then finely washing the down feather by using the self-made finishing liquid based on the modified chitosan, wherein the modified chitosan is introduced with polymer chains of sodium allylsulfonate and acrylamide, so that the down feather can be effectively sterilized, and meanwhile, the effect of removing the content of grease in the down feather and the effect of reducing the residual grease rate in the down feather are achieved; by further advanced treatment of the fluffing aid, the fluffiness of the down feather can be effectively improved.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be apparent that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Examples
A processing technology for improving fluffy degree of white duck down comprises the following steps:
s1, white duck down pretreatment: pre-separating, ash removing, fine separating and primary washing;
s2, fine washing: dewatering and soaking the pretreated white duck down in finishing liquid, padding, and rinsing with clear water;
s3: dewatering the washed white duck down, adding into clear water, adding a fluffy auxiliary agent pre-dispersed in water, cleaning for 30min, and dewatering;
s4: soaking in 1-1.5 per mill sodium hypophosphite aqueous solution for 30min, and dehydrating;
s5: rinsing with clear water, dewatering, and oven drying.
Wherein the finishing liquid is 5g/L of aqueous solution of p (AM-co-ALS) grafted chitosan.
The fluffy auxiliary agent comprises organosilicon quaternary ammonium salt and chitosan/polyurethane-metal compound, and the mass ratio is 1; the mass ratio of the white duck down to the clear water is 1-20, and the mass ratio of the fluffy auxiliary agent to the clear water is 1-2g.
The raw materials used in this case are all available directly from the market, unless otherwise specified.
4-cyano-4 (thiobenzoyl) pentanoic acid as chain transfer agent
Figure BDA0003812650700000051
For common RAFT agents, reference may be made to Macromolecules,2001, 34.
P (AM-co-ALS) grafted chitosan
Figure BDA0003812650700000052
The preparation process is as follows:
1) Adding 20mmol of acrylamide, 10mmol of sodium allylsulfonate, 1mmol of 4-cyano-4 (thiobenzoyl) valeric acid and 0.2mmol of azobisisobutyronitrile into a reaction bottle, repeating freezing, air extraction and nitrogen filling for three times, and reacting for 2 hours at 60 ℃; p (AM-co-ALS) 1,Mn =3100g/mol, m =17,n =6 is obtained;
2) Chitosan (deacetylation degree 91.5%, average molecular weight 3000) protects amino through condensation reaction of benzaldehyde and amino, 4g of chitosan is dispersed in methanol aqueous solution, 15ml of benzaldehyde methanol solution is dripped in, the temperature is raised to 50 ℃, reflux reaction is carried out for 4h, and ethanol is used for extraction to obtain amino-protected chitosan; dispersing 2g of the mixture in DMF, adding DCC (dimethyl formamide), performing nitrogen protection, adding p (AM-co-ALS) with equal mass, stirring at low speed, dropwise adding a DMF solution dissolved with DMAP, stirring at normal temperature for 48 hours to perform esterification reaction, and removing benzaldehyde to obtain p (AM-co-ALS)/CS after the reaction is finished.
The preparation process of the organosilicon quaternary ammonium salt comprises the following steps:
1) Dispersing 2g of nano zinc oxide in 50ml of absolute ethyl alcohol, performing ultrasonic dispersion for 1h, adding 1g of gamma-chloropropyltriethoxysilane into the mixture, heating to 40-50 ℃, performing reflux stirring for 2h, performing suction filtration, washing with absolute ethyl alcohol, and drying to obtain ZnO/KH230;
2) Adding 1.5g of hexamethylenetetramine into a reaction bottle, and adding 30ml of pyridine to completely dissolve the hexamethylenetetramine; ultrasonically dispersing 3g of ZnO/KH230 in a toluene solution, adding the solution into a reaction bottle, setting the temperature to be 110 ℃, heating and refluxing for 5-10 h by using microwaves, cooling and standing the solution after the reaction is finished, and recrystallizing acetone to obtain the organic silicon quaternary ammonium salt.
The puffing auxiliary agent comprises organosilicon quaternary ammonium salt and a chitosan/polyurethane-metal compound, and the preparation process of the chitosan/polyurethane-metal compound is as follows:
1) Preparing a polyurethane prepolymer: adding vacuum dehydrated polyoxypropylene glycol (PPG-1000, 5 mmol), isophorone isocyanate (IPDI, 0.035 mol) and 3-dimethylamino-1, 2-propanediol (DAP, 0.01 mol) into a reaction bottle, introducing nitrogen for protection, heating to 90 ℃ for reaction for 3h, cooling, adding isopropanol (0.01 mol) for reaction for 1h to obtain the product;
2) Modified chitosan: the modified chitosan is prepared by utilizing laccase to catalyze the graft copolymerization of the p-hydroxybenzoic acid and the chitosan, and the modified waterborne polyurethane is prepared by referring to the literature of 'p-hydroxybenzoic acid-chitosan oligosaccharide';
3) Preparing a chitosan/polyurethane-metal composite: dissolving 0.3g of modified chitosan in dimethyl sulfoxide, adding the solution into the polyurethane prepolymer system obtained in the step 1), carrying out heat preservation reaction for 1h at the temperature of 40 ℃, cooling to room temperature, adding water, rapidly stirring and emulsifying, dissolving 6g of nickel nitrate and 4g of ferric nitrate, slowly injecting the solution into chitosan-polyurethane, continuously stirring, standing overnight, adding a sodium hydroxide solution, filtering, drying precipitates, and grinding to obtain the chitosan-polyurethane prepolymer.
Example 1:
s1, white duck down pretreatment: pre-separating, ash removing, fine separating and primary washing;
s2, fine washing: dewatering and soaking the pretreated white duck down in finishing liquid, setting the temperature to be 70-80 ℃, preserving the heat for 30-100 min, and rinsing with clear water after padding treatment;
s3: dewatering 1kg of the washed white duck down, adding into 15L of clear water, adding 15g of puffing auxiliary agent (2 g of organic silicon quaternary ammonium salt and 13g of chitosan/polyurethane-metal compound) which is pre-dispersed in the water, cleaning for 30min, and dewatering;
s4: soaking in 1-1.5 per mill sodium hypophosphite water solution for 30min, and dehydrating;
s5: rinsing with clear water, dewatering, and oven drying.
Example 2:
s1, white duck down pretreatment: pre-separation, ash removal, fine separation and initial washing;
s2, fine washing: dewatering and soaking the pretreated white duck down in finishing liquid, setting the temperature to be 70-80 ℃, preserving the heat for 30-100 min, and rinsing with clear water after padding treatment;
s3: dewatering 1kg of the washed white duck down, adding into 20L of clear water, adding 30g of fluffy auxiliary agent (5 g of organic silicon quaternary ammonium salt and 25g of chitosan/polyurethane-metal compound) which is pre-dispersed in the water, cleaning for 30min, and dewatering;
s4: soaking in 1-1.5 per mill sodium hypophosphite water solution for 30min, and dehydrating;
s5: rinsing with clear water, dewatering, and oven drying.
Example 3:
s1, white duck down pretreatment: pre-separation, ash removal, fine separation and initial washing;
s2, fine washing: dewatering and soaking the pretreated white duck down in finishing liquid, setting the temperature to be 70-80 ℃, preserving the heat for 30-100 min, and rinsing with clear water after padding treatment;
s3: dewatering 1kg of the washed white duck down, adding into 10L of clear water, adding 15g of puffing auxiliary agent (4 g of organic silicon quaternary ammonium salt and 11g of chitosan/polyurethane-metal compound) which is pre-dispersed in the water, cleaning for 30min, and dewatering;
s4: soaking in 1-1.5 per mill sodium hypophosphite water solution for 30min, and dehydrating;
s5: rinsing with clear water, dewatering, and oven drying.
Comparative example 1:
s1, white duck down pretreatment: pre-separation, ash removal, fine separation and initial washing;
s2, fine washing: dewatering and soaking the pretreated white duck down in finishing liquid, setting the temperature to be 70-80 ℃, preserving the heat for 30-100 min, and rinsing with clear water after padding treatment;
s3: soaking in 1-1.5 per mill sodium hypophosphite water solution for 30min, dewatering, rinsing and drying.
Comparative example 2:
s1, white duck down pretreatment: pre-separating, ash removing, fine separating and primary washing;
s2, fine washing: dewatering and soaking the pretreated white duck down in finishing liquid, setting the temperature to be 70-80 ℃, preserving the heat for 30-100 min, and rinsing with clear water after padding treatment;
s3: dewatering 1kg of the washed white duck down, adding into clear water, adding iron ion and nickel ion solution, cleaning for 30min, and dewatering;
s4: soaking in 1-1.5 per mill sodium hypophosphite water solution for 30min, and dehydrating;
s5: rinsing with clear water, dehydrating, and oven drying.
The fluffiness testing method comprises the following steps: the measurement was carried out according to FZ/T80001-2002, test method for feather and Down washed with water.
The antibacterial rate test method comprises the following steps: the down is tested for its antibacterial activity against mold with reference to the second part absorption method of GB/T20944.2-2007, and the results are reported in table 1.
TABLE 1
Example 1 Example 2 Example 3 Comparative example 1 Comparative example 2
Bulk/cm 21.2 22.6 22.1 14.2 18.7
Antibacterial ratio/%) 94.5 95.4 94.1 78.5 79.4
While embodiments of the invention have been disclosed above, it is not limited to the applications listed in the description and the embodiments, which are fully applicable in all kinds of fields of application of the invention, and further modifications may readily be effected by those skilled in the art, so that the invention is not limited to the specific details without departing from the general concept defined by the claims and the scope of equivalents.

Claims (7)

1. A processing technology for improving fluffy degree of white duck down is characterized by comprising the following steps:
s1, white duck down pretreatment: pre-separation, ash removal, fine separation and initial washing;
s2, fine washing: dewatering and soaking the pretreated white duck down in finishing liquid, padding, and rinsing with clear water;
s3: dewatering the washed white duck down, adding into clear water, adding a fluffy auxiliary agent pre-dispersed in water, cleaning for 30min, and dewatering;
s4: soaking in 1-1.5 per mill sodium hypophosphite water solution for 30min, and dehydrating;
s5: rinsing with clear water, dehydrating and drying to obtain the final product;
wherein the finishing liquid is 5g/L of water solution of p (AM-co-ALS) grafted chitosan, and the structural formula is as follows:
Figure FDA0003812650690000011
m and n are respectively and independently integers of 10-20 and 5-10;
the puffing auxiliary agent comprises organic silicon quaternary ammonium salt and a chitosan/polyurethane-metal compound, and the preparation process of the chitosan/polyurethane-metal compound is as follows:
1) Preparing a polyurethane prepolymer: prepared by taking isophorone isocyanate, 3-dimethylamino-1, 2-propanediol, polyoxypropylene glycol and isopropanol as raw materials;
2) Modified chitosan: utilizing laccase to catalyze the graft copolymerization of the p-hydroxyphenylpropionic acid and the chitosan to prepare modified chitosan;
3) Preparing a chitosan/polyurethane-metal composite: dissolving modified chitosan in dimethyl sulfoxide, adding the mixture into a polyurethane prepolymer system, carrying out heat preservation reaction for 1h at 40 ℃, cooling to room temperature, adding water, rapidly stirring and emulsifying, dissolving nickel nitrate and ferric nitrate, slowly injecting the mixture into chitosan-polyurethane, continuously stirring, standing overnight, adding a sodium hydroxide solution, filtering, drying a precipitate, and grinding to obtain the chitosan-polyurethane composite material.
2. The process according to claim 1, wherein the p (AM-co-ALS) grafted chitosan is prepared as follows:
1) Acrylamide and sodium allylsulfonate are used as monomers, and are polymerized under the conditions that 4-cyano-4 (thiobenzoyl) valeric acid is used as a chain transfer agent and azobisisobutyronitrile is used as an initiator to obtain p (AM-co-ALS);
2) The amino group of the chitosan is protected by condensation reaction of benzaldehyde and the amino group, then the chitosan and p (AM-co-ALS) are subjected to esterification reaction, and the benzaldehyde is removed after the reaction is finished to obtain the p (AM-co-ALS) grafted chitosan.
3. The processing technology for improving fluffy degree of white duck down according to claim 2, wherein the molar ratio of acrylamide, sodium allylsulfonate, 4-cyano-4 (thiobenzoyl) valeric acid and azobisisobutyronitrile in the step S1 is 10-30.
4. The processing technology for improving fluffy degree of white duck down according to claim 1, wherein in the step S3, the mass ratio of the organic silicon quaternary ammonium salt to the chitosan/polyurethane-metal compound is 1 to 10; the mass ratio of the white duck down to the clear water is 1-20, and the mass ratio of the fluffy auxiliary agent to the clear water is 1-2g.
5. The process for improving fluffy power of white duck down according to claim 1, wherein the organosilicon quaternary ammonium salt is prepared by the following steps:
1) Dispersing nano zinc oxide in absolute ethyl alcohol, performing ultrasonic dispersion for 1 hour, adding gamma-chloropropyltriethoxysilane, heating to 40-50 ℃, refluxing and stirring for 2 hours, performing suction filtration, washing with absolute ethyl alcohol, and drying to obtain ZnO/KH230;
2) Adding hexamethylenetetramine into a reaction bottle, and adding pyridine to completely dissolve the hexamethylenetetramine; ultrasonically dispersing ZnO/KH230 in a toluene solution, adding the solution into a reaction bottle, setting the temperature to be 110 ℃, heating and refluxing the solution for 5 to 10 hours by using microwaves, cooling and standing the solution after the reaction is finished, and recrystallizing acetone to obtain the organosilicon quaternary ammonium salt.
6. The processing technology for improving fluffy degree of the white duck down as claimed in claim 5, wherein the mass ratio of the nano zinc oxide to the gamma-chloropropyltriethoxysilane is 2; the mass ratio of the hexamethylenetetramine to the ZnO/KH230 is 1.
7. The processing technology for improving fluffy degree of white duck down according to claim 1, wherein the temperature in the fine washing process is set to be 70-80 ℃, and the temperature is kept for 30-100 min.
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CN104294613A (en) * 2014-08-08 2015-01-21 广东羽威农业集团有限公司 High-fluffiness pure-white antibacterial down feather and preparation method thereof
CN108797120A (en) * 2018-07-10 2018-11-13 江苏阳光股份有限公司 A kind of preparation method of crease-resistant conformal wool fabric
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09188973A (en) * 1996-01-10 1997-07-22 Tsuyatsuku Kk Durable stabilization of shape in protein textile product and feather
CN101611938A (en) * 2008-06-27 2009-12-30 凌颖 A kind of antibacterial down feather and preparation method thereof
CN102352568A (en) * 2011-10-26 2012-02-15 芜湖南翔羽绒有限公司 Arrangement method for down feathers with antibacterial function
CN103485186A (en) * 2013-08-16 2014-01-01 陕西科技大学 Method for improving filling power of down feather
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