CN111607669B - Preparation method of ecological hair-dropping-preventing rabbit fur - Google Patents
Preparation method of ecological hair-dropping-preventing rabbit fur Download PDFInfo
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- 241000283973 Oryctolagus cuniculus Species 0.000 title claims abstract description 75
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 238000002791 soaking Methods 0.000 claims abstract description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 32
- 238000000034 method Methods 0.000 claims abstract description 20
- 238000005238 degreasing Methods 0.000 claims abstract description 12
- 230000008961 swelling Effects 0.000 claims abstract description 12
- 230000003472 neutralizing effect Effects 0.000 claims abstract description 3
- 239000000243 solution Substances 0.000 claims description 39
- 150000003839 salts Chemical class 0.000 claims description 30
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 24
- SXRSQZLOMIGNAQ-UHFFFAOYSA-N Glutaraldehyde Chemical compound O=CCCCC=O SXRSQZLOMIGNAQ-UHFFFAOYSA-N 0.000 claims description 23
- 239000000203 mixture Substances 0.000 claims description 22
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 20
- 238000002156 mixing Methods 0.000 claims description 20
- 238000003756 stirring Methods 0.000 claims description 15
- 238000006386 neutralization reaction Methods 0.000 claims description 13
- 239000000706 filtrate Substances 0.000 claims description 12
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 12
- 235000017550 sodium carbonate Nutrition 0.000 claims description 12
- 239000002253 acid Substances 0.000 claims description 11
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 10
- 206010042674 Swelling Diseases 0.000 claims description 10
- 239000003795 chemical substances by application Substances 0.000 claims description 10
- 239000011259 mixed solution Substances 0.000 claims description 10
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 10
- 235000011152 sodium sulphate Nutrition 0.000 claims description 10
- 150000001875 compounds Chemical class 0.000 claims description 9
- 125000000542 sulfonic acid group Chemical group 0.000 claims description 9
- 239000003755 preservative agent Substances 0.000 claims description 8
- 230000002335 preservative effect Effects 0.000 claims description 8
- 230000003658 preventing hair loss Effects 0.000 claims description 7
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims description 6
- 235000019270 ammonium chloride Nutrition 0.000 claims description 6
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 claims description 6
- 229910052921 ammonium sulfate Inorganic materials 0.000 claims description 6
- 235000011130 ammonium sulphate Nutrition 0.000 claims description 6
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 5
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 claims description 5
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 5
- 238000000227 grinding Methods 0.000 claims description 5
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 5
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 5
- 235000010267 sodium hydrogen sulphite Nutrition 0.000 claims description 5
- 235000008331 Pinus X rigitaeda Nutrition 0.000 claims description 4
- 235000011613 Pinus brutia Nutrition 0.000 claims description 4
- 241000018646 Pinus brutia Species 0.000 claims description 4
- HPTYUNKZVDYXLP-UHFFFAOYSA-N aluminum;trihydroxy(trihydroxysilyloxy)silane;hydrate Chemical compound O.[Al].[Al].O[Si](O)(O)O[Si](O)(O)O HPTYUNKZVDYXLP-UHFFFAOYSA-N 0.000 claims description 4
- 230000003656 anti-hair-loss Effects 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 4
- 229910052621 halloysite Inorganic materials 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- MAGFQRLKWCCTQJ-UHFFFAOYSA-N 4-ethenylbenzenesulfonic acid Chemical compound OS(=O)(=O)C1=CC=C(C=C)C=C1 MAGFQRLKWCCTQJ-UHFFFAOYSA-N 0.000 claims description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 2
- 150000003900 succinic acid esters Chemical class 0.000 claims description 2
- IIACRCGMVDHOTQ-UHFFFAOYSA-M sulfamate Chemical compound NS([O-])(=O)=O IIACRCGMVDHOTQ-UHFFFAOYSA-M 0.000 claims description 2
- XOGTZOOQQBDUSI-UHFFFAOYSA-M Mesna Chemical compound [Na+].[O-]S(=O)(=O)CCS XOGTZOOQQBDUSI-UHFFFAOYSA-M 0.000 claims 1
- 229910052708 sodium Inorganic materials 0.000 claims 1
- 239000011734 sodium Substances 0.000 claims 1
- 210000004209 hair Anatomy 0.000 abstract description 7
- 230000002265 prevention Effects 0.000 abstract description 3
- 210000003491 skin Anatomy 0.000 description 40
- 230000000052 comparative effect Effects 0.000 description 12
- 239000010985 leather Substances 0.000 description 10
- 102000008186 Collagen Human genes 0.000 description 4
- 108010035532 Collagen Proteins 0.000 description 4
- 229920001436 collagen Polymers 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 150000003890 succinate salts Chemical class 0.000 description 4
- 201000004384 Alopecia Diseases 0.000 description 3
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 description 3
- 241001465754 Metazoa Species 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 229940037003 alum Drugs 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 208000024963 hair loss Diseases 0.000 description 3
- 102000004190 Enzymes Human genes 0.000 description 2
- 108090000790 Enzymes Proteins 0.000 description 2
- 241000779819 Syncarpia glomulifera Species 0.000 description 2
- 230000002421 anti-septic effect Effects 0.000 description 2
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 2
- 230000003721 exogen phase Effects 0.000 description 2
- 210000003780 hair follicle Anatomy 0.000 description 2
- 238000005554 pickling Methods 0.000 description 2
- 239000001739 pinus spp. Substances 0.000 description 2
- 229940036248 turpentine Drugs 0.000 description 2
- 108091005508 Acid proteases Proteins 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 1
- 241000282414 Homo sapiens Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000013527 degreasing agent Substances 0.000 description 1
- 238000005237 degreasing agent Methods 0.000 description 1
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 230000001804 emulsifying effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000037308 hair color Effects 0.000 description 1
- 230000003676 hair loss Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 description 1
- QDRKDTQENPPHOJ-UHFFFAOYSA-N sodium ethoxide Chemical compound [Na+].CC[O-] QDRKDTQENPPHOJ-UHFFFAOYSA-N 0.000 description 1
- KQFAFFYKLIBKDE-UHFFFAOYSA-M sodium;ethanesulfonate Chemical compound [Na+].CCS([O-])(=O)=O KQFAFFYKLIBKDE-UHFFFAOYSA-M 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
- C14C1/00—Chemical treatment prior to tanning
- C14C1/08—Deliming; Bating; Pickling; Degreasing
-
- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
- C14C1/00—Chemical treatment prior to tanning
- C14C1/04—Soaking
-
- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
- C14C3/00—Tanning; Compositions for tanning
- C14C3/02—Chemical tanning
- C14C3/08—Chemical tanning by organic agents
-
- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
- C14C3/00—Tanning; Compositions for tanning
- C14C3/02—Chemical tanning
- C14C3/28—Multi-step processes
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment And Processing Of Natural Fur Or Leather (AREA)
Abstract
The invention discloses a preparation method of ecological hair-dropping-preventing rabbit fur. The method comprises the following steps: (1) soaking in water; (2) swelling due to acidity; (3) swelling reducing and degreasing; (4) softening; (5) primary tanning; (6) tanning; (7) and (4) neutralizing. The rabbit fur prepared by the method has excellent waterproof performance, high shrinkage temperature and good hair falling prevention performance.
Description
Technical Field
The invention belongs to the technical field of leather preparation, and particularly relates to a preparation method of ecological hair-loss-preventing rabbit fur.
Background
Leather has been one of the materials used for warm keeping and decoration by human beings since ancient times, and different animal skins have different toughness and softness. With the improvement of the life quality of people and the enhancement of environmental awareness, soft and comfortable shoes are more and more favored by people.
The rabbit fur is a common fur making raw material fur, the fur of the rabbit fur is dense, smooth and flexible, the hair color is smooth, the fur plate is thin and tough, various colors of fur coats, hats, collars and clothes bands can be made after tanning and dyeing, the rabbit fur is economical and practical, a rabbit fur product is popular with consumers, and at present, the tanned rabbit fur generally has the problems of roughness, harder texture, poor waterproof performance and easy hair falling.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the preparation method of the ecological anti-hair-falling rabbit fur, which can effectively solve the problems that the rabbit fur prepared by the prior art is poor in waterproof performance and easy to hair fall.
In order to achieve the purpose, the technical scheme adopted by the invention for solving the technical problems is as follows:
a preparation method of ecological hair-loss-preventing rabbit fur comprises the following steps:
(1) soaking in water
Placing rabbit skin in a mixed solution containing salt, glutaraldehyde and a preservative, and soaking for 5-8 times, 30-55 min each time; the final concentration of glutaraldehyde in the mixed solution is 0.1-0.5 mL/L;
(2) swelling due to acid
Soaking the soaked rabbit skin for 3-5 times, each time for 30-50 min, by using sulfuric acid with the concentration of 0.7-0.8 mL/L and sodium bisulfite with the concentration of 0.1-0.5 g/L;
(3) detumescence degreasing
Mixing the mixture of anhydrous sodium sulphate and salt with the weight ratio of 1:1 with the rabbit skin after acid swelling treatment, and then standing overnight; then placing the mixture into a degreasing solution, soaking for 30-60 min, and dehydrating and spin-drying;
(4) softening
Mixing halloysite, sal ammoniac and nodular branch of pine in a weight ratio of 1-2: 2-3, grinding, then putting into water, decocting with strong fire for 40-45min, filtering to obtain a filtrate, adding ammonium sulfate which is 20-30% of the weight of the filtrate when the filtrate is cooled to 28 ℃, and uniformly stirring; then adding the rabbit skin treated in the step (3), stirring and soaking for 2-5 hours;
(5) preliminary tanning
Mixing water, soda ash and a compound containing a sulfonic acid group in a weight ratio of 5-10: 0.1-0.5: 0.5-2, then soaking the degreased rabbit skin in the mixture, and stirring the mixture at a constant temperature of 32 ℃ for over night at a speed of 9 r/min;
(6) tanning
Uniformly mixing glutaraldehyde with the concentration of 12-15 mL/L, soda ash with the concentration of 1-5 g/L, salt with the concentration of 40-50 g/L and a fatting agent with the concentration of 0.5-1 mL/L, adjusting the pH value to 5-6, and dividing the mixture into a solution I and a solution II with the volume ratio of 2-3: 1; then, placing the rabbit skin treated in the step (5) in the solution I for tanning for 2-5 h, and then adding the solution II for further tanning for 15-20 h;
(7) neutralization
Placing the tanned rabbit skin in a neutralization solution at the temperature of 32 ℃, rotatably soaking for 20-25 h at the rotating speed of 3-5 r/min, taking out, standing for 5-7 h, and airing; the neutralizing solution comprises water, salt, anhydrous sodium sulphate and polyvinyl alcohol in a weight ratio of 5-10: 0.01-0.05: 0.1-0.5: 0.01-0.05.
Further, the final concentration of glutaraldehyde in step (1) was 0.5 mL/L.
Further, the weight ratio of the water, the soda ash and the compound containing the sulfonic acid group in the step (5) is 5-10: 0.1: 0.5.
Further, the compound containing sulfonic acid group is 4-vinyl benzene sulfonic acid, 2-mercapto sodium ethanesulfonate, alcohol ethoxy sodium glycerosulfonate, sulfamate.
Further, the concentration of glutaraldehyde in step (6) was 12 mL/L.
Further, the volume ratio of the solution I to the solution II in the step (6) is 2: 1.
Further, the weight ratio of the red halloysite, the sal ammoniac and the nodular branch of pine is 2:3: 2.
Further, the fat-liquoring agent comprises sulfonated succinic acid ester and polyvalent metal salt in a weight ratio of 0.5-1: 0.5-1.
Further, the polyvalent metal salt is a trivalent aluminum salt.
Further, the final concentration of the salt in the step (1) is 1-30 g/L; the final concentration of the preservative is 0.1-0.3 mL/L.
Further, the preservative was DL 503.
Further, when degreasing is performed in the step (4), the degreasing agent used is sodium dodecyl benzene sulfonate.
The invention has the beneficial effects that:
1. the glutaraldehyde solution with the concentration of 0.1-0.5 mL/L is adopted for treatment during soaking, the effects of shrinking hair follicles and stabilizing hair roots can be achieved, the fur falling amount of skin in the subsequent preparation process is greatly reduced, and the purposes of hair fixation and hair falling prevention are achieved.
2. The enzyme preparation can effectively soften rabbit fur in the treatment process, but the enzyme preparation can bring huge damage to hair follicles of the rabbit fur while softening the rabbit fur, so that a great amount of hair of the rabbit fur is fallen. Therefore, according to the application, natural components of the halloysite, the sal ammoniac and the turpentine are used for treating the rabbit skin, the structure of collagen in the animal skin can be changed by the matching of the ammonium sulfate and the halloysite, the pores of collagen fibers are increased, and the tensile resistance and the softness of the animal skin are further enhanced. In addition, the water resistance and heat resistance of the leather can be effectively improved by using the sal ammoniac and the turpentine, so that the prepared rabbit skin has good waterproof performance and anti-shrinkage temperature.
3. The sulfonic acid substances can permeate at low temperature, are combined with the leather fibers after being heated, and can generate free acid in the combination process, so that the aim of pickling is fulfilled. Meanwhile, pickling is avoided, so that a large amount of industrial salt is prevented from being added in the leather preparation process, industrial salt pollution is avoided, the prepared leather is more environment-friendly, and the subsequent sewage treatment is simple.
4. The sulfonated succinate fat-liquoring agent for leather contains carboxylate radical and sulfite radical in the molecule, has good water emulsifying property and strong binding capacity with leather fiber, and can endow leather with better water washing resistance. And the high-valence aluminum salt can seal redundant carboxyl on collagen molecules and the high-valence aluminum salt, so that the waterproof performance of the prepared rabbit skin is improved, and the aluminum salt can also be used as a tanning agent and can also be used for tanning leather to a certain extent. In addition, glutaraldehyde used in the tanning process also has the function of sealing redundant carboxyl on collagen molecules, so that the rabbit skin prepared through the whole treatment process has excellent waterproof performance.
Detailed Description
The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and it will be apparent to those skilled in the art that various changes may be made without departing from the spirit and scope of the invention as defined and defined in the appended claims, and all matters produced by the invention using the inventive concept are protected.
Example 1
The preparation method of the ecological anti-hair-loss rabbit fur is characterized by comprising the following steps:
(1) soaking in water
Soaking rabbit skin in a mixed solution containing water, salt, glutaraldehyde and a preservative DL503 for 8 times, each time for 30 min; the final concentration of glutaraldehyde in the mixed solution is 0.5 mL/L; the final concentration of the salt is 30g/L, and the Baume degree is 2.0; the final concentration of the preservative DL503 is 0.1 mL/L; the water temperature is 26 ℃;
(2) swelling due to acid
Soaking the soaked rabbit skin for 5 times, 50min each time, by using sulfuric acid with the concentration of 0.7mL/L and sodium bisulfite with the concentration of 0.3 g/L;
(3) detumescence degreasing
Mixing the mixture of anhydrous sodium sulphate and salt with the weight ratio of 1:1 with the rabbit skin after acid swelling treatment, and then standing overnight; placing in degreasing solution, soaking for 60min, dewatering, and spin-drying;
(4) softening
Mixing Halloysitum rubrum, cyanide and lignum Pini nodi at a weight ratio of 2:3:2, grinding, decocting in water with strong fire for 45min, filtering to obtain filtrate, cooling to 28 deg.C, adding ammonium sulfate 20% of the filtrate, and stirring; then adding the rabbit skin treated in the step (3), stirring and soaking for 5 hours;
(5) preliminary tanning
Mixing water, soda ash and a compound containing sulfonic acid groups according to the weight ratio of 10:0.1:0.5, then soaking the degreased rabbit skin in the mixture, and stirring the mixture overnight at the constant temperature of 32 ℃ and at the speed of 9 r/min;
(6) tanning
Uniformly mixing glutaraldehyde with the concentration of 12mL/L, soda ash with the concentration of 5g/L, salt with the concentration of 50g/L and a fatting agent with the concentration of 1mL/L, adjusting the pH value to be 6, and dividing the mixture into a solution I and a solution II with the volume ratio of 2: 1; then placing the rabbit skin treated in the step (5) in the solution I for tanning for 2 hours, and adding the solution II for further tanning for 20 hours;
the fatliquor comprises sulfonated succinate and alum in a weight ratio of 1: 0.5.
(7) Neutralization
Placing the tanned rabbit skin in a neutralization solution at the temperature of 32 ℃, rotatably soaking for 25 hours at the rotating speed of 3r/min, taking out, standing for 5-7 hours, and airing; the water, the salt, the anhydrous sodium sulphate and the polyvinyl alcohol are 10:0.05:0.5: 0.05.
Example 2
The preparation method of the ecological anti-hair-loss rabbit fur is characterized by comprising the following steps:
(1) soaking in water
Soaking rabbit skin in a mixed solution containing salt, glutaraldehyde and antiseptic for 8 times (each time for 30 min); the final concentration of glutaraldehyde in the mixed solution is 0.1 mL/L; the final concentration of the salt is 18 g/L; the final concentration of the preservative DL503 was 0.1 mL/L.
(2) Swelling due to acid
Soaking the soaked rabbit skin for 5 times, 50min each time, by using sulfuric acid with the concentration of 0.8mL/L and sodium bisulfite with the concentration of 0.5 g/L;
(3) detumescence degreasing
Mixing the mixture of anhydrous sodium sulphate and salt with the weight ratio of 1:1 with the rabbit skin after acid swelling treatment, and then standing overnight; placing in degreasing solution, soaking for 30min, dewatering, and spin-drying;
(4) softening
Mixing Halloysitum rubrum, cyanide and lignum Pini nodi at a weight ratio of 1:2:2, grinding, decocting in water with strong fire for 40min, filtering to obtain filtrate, cooling to 28 deg.C, adding ammonium sulfate 30% of the filtrate, and stirring; then adding the rabbit skin treated in the step (3), stirring and soaking for 5 hours;
(5) preliminary tanning
Mixing water, soda ash and a compound containing sulfonic acid groups according to the weight ratio of 10:0.5:2, then soaking the degreased rabbit skin in the mixture, and stirring the mixture overnight at the constant temperature of 32 ℃ and at the speed of 9 r/min;
(6) tanning
Uniformly mixing glutaraldehyde with the concentration of 15mL/L, soda ash with the concentration of 5g/L, salt with the concentration of 50g/L and a fatting agent with the concentration of 1mL/L, adjusting the pH value to be 5, and dividing the mixture into a solution I and a solution II with the volume ratio of 3: 1; then placing the rabbit skin treated in the step (5) in the solution I for tanning for 5 hours, and adding the solution II for further tanning for 20 hours; the fatliquor comprises sulfonated succinate and alum in a weight ratio of 1: 0.6.
(7) Neutralization
Placing the tanned rabbit skin in a neutralization solution at the temperature of 32 ℃, rotatably soaking for 20-25 h at the rotating speed of 3-5 r/min, taking out, standing for 5-7 h, and airing; the neutralization solution comprises water, salt, anhydrous sodium sulphate and polyvinyl alcohol in a weight ratio of 10:0.01: 0.5: 0.01.
Example 3
The preparation method of the ecological anti-hair-loss rabbit fur is characterized by comprising the following steps:
(1) soaking in water
Soaking rabbit skin in mixed solution containing salt, glutaraldehyde and antiseptic for 8 times (40 min each time); the final concentration of glutaraldehyde in the mixed solution is 0.4 mL/L; the final concentration of the salt is 22 g/L; the final concentration of the preservative DL50 was 0.3 mL/L;
(2) swelling due to acid
Soaking the soaked rabbit skin for 5 times, each time for 30min, by using sulfuric acid with the concentration of 0.8mL/L and sodium bisulfite with the concentration of 0.3 g/L;
(3) detumescence degreasing
Mixing the mixture of anhydrous sodium sulphate and salt with the weight ratio of 1:1 with the rabbit skin after acid swelling treatment, and then standing overnight; placing in degreasing solution, soaking for 60min, dewatering, and spin-drying;
(4) softening
Mixing Halloysitum rubrum, cyanide and lignum Pini nodi at a weight ratio of 1:3:3, grinding, decocting in water with strong fire for 45min, filtering to obtain filtrate, cooling to 28 deg.C, adding ammonium sulfate 30% of the filtrate, and stirring; then adding the rabbit skin treated in the step (3), stirring and soaking for 5 hours;
(5) preliminary tanning
Mixing water, soda ash and a compound containing sulfonic acid groups according to the weight ratio of 10:0.5:0.6, then soaking the degreased rabbit skin in the mixture, and stirring the mixture overnight at the constant temperature of 32 ℃ and at the speed of 9 r/min;
(6) tanning
Uniformly mixing glutaraldehyde with the concentration of 12mL/L, soda ash with the concentration of 5g/L, salt with the concentration of 50g/L and a fatting agent with the concentration of 1mL/L, adjusting the pH value to be 5, and dividing the mixture into a solution I and a solution II with the volume ratio of 2: 1; then placing the rabbit skin treated in the step (5) in the solution I for tanning for 2 hours, and adding the solution II for further tanning for 18 hours; the fatting agent comprises sulfonated succinate and alum with the weight ratio of 1: 0.5;
(7) neutralization
Placing the tanned rabbit skin in a neutralization solution at the temperature of 32 ℃, rotatably soaking for 25 hours at the rotating speed of 3r/min, taking out, standing for 7 hours and then airing; the neutralization solution comprises water, salt, anhydrous sodium sulphate and polyvinyl alcohol in a weight ratio of 10:0.05:0.1: 0.01.
Comparative example 1
In comparison with example 1, glutaraldehyde was absent in step (1), and the rest of the procedure was the same as in example 1.
Comparative example 2
Compared with the example 1, the glutaraldehyde is absent in the step (1), the acid protease used in the softening process, and the rest of the process is the same as the example 1.
Comparative example 3
Compared with the example 1, the fatliquor is absent in the step (6), the cationic fatliquor is added in the neutralization process, and the rest process is the same as the example 1.
1. Performance tests were performed on the rabbit skins prepared in examples 1 to 3 and comparative examples 1 to 3, and the results are shown in Table 1.
TABLE 1 Rabbit skin Properties after tanning
The results in table 1 show that the shrinkage temperature, the tear strength and other properties of the rabbit fur prepared by the method are obviously superior to those of comparative examples 1-3.
2. According to GB/T4689.21-1996, the water absorption test of the rabbit skins which are prepared in the application examples 1-3 and the comparative examples 1-3 and have the weight of 500g is carried out, and the results are shown in Table 2.
TABLE 2 Water repellency Properties
| Example 1 | Example 2 | Example 3 | Comparative example 1 | Comparative example 2 | Comparative example 3 | |
| Weight before Water absorption (g) | 500 | 500 | 500 | 500 | 500 | 500 |
| Weight after Water absorption (g) | 515 | 536 | 532 | 634 | 805 | 742 |
The results in table 2 show that the waterproof effect of the rabbit skin prepared by the method is obviously superior to that of comparative examples 1-3, wherein the effect of example 1 is the best.
3. The hair shedding amount W of the rabbit fur prepared in the embodiments 1-3 and the comparative examples 1-3 of the application is detected according to GB T25880-2010, the result is shown in Table 3, and the calculation formula is as follows: w ═ W1S x 100; in the formula: w is the hair-shedding amount, and the unit is mg/100cm2；W1The measured hair loss is in mg; s is the brushing area in cm2。
TABLE 3 Rabbit fur loss
As can be seen from the results in Table 3, the rabbit fur prepared by the method has hair loss prevention effect obviously superior to that of comparative examples 1-3.
In conclusion, the rabbit fur prepared by the method has excellent waterproof performance, high shrinkage temperature and good hair-falling prevention performance.
Claims (7)
1. The preparation method of the ecological anti-hair-loss rabbit fur is characterized by comprising the following steps:
(1) soaking in water
Placing rabbit skin in a mixed solution containing salt, glutaraldehyde and a preservative, and soaking for 5-8 times, 30-55 min each time; the final concentration of glutaraldehyde in the mixed solution is 0.1-0.5 mL/L;
(2) swelling due to acid
Soaking the soaked rabbit skin for 3-5 times, each time for 30-50 min, by using sulfuric acid with the concentration of 0.7-0.8 mL/L and sodium bisulfite with the concentration of 0.1-0.5 g/L;
(3) detumescence degreasing
Mixing the mixture of anhydrous sodium sulphate and salt with the weight ratio of 1:1 with the rabbit skin after acid swelling treatment, and then standing overnight; then placing the mixture into a degreasing solution, soaking for 30-60 min, and dehydrating and spin-drying;
(4) softening
Mixing halloysite, sal ammoniac and nodular branch of pine in a weight ratio of 1-2: 2-3, grinding, then putting into water, decocting for 40-45min, filtering to obtain a filtrate, cooling the filtrate to 28 ℃, adding ammonium sulfate which is 20-30% of the weight of the filtrate, and uniformly stirring; then adding the rabbit skin treated in the step (3), stirring and soaking for 2-5 hours;
(5) preliminary tanning
Mixing water, soda ash and a compound containing a sulfonic acid group in a weight ratio of 5-10: 0.1-0.5: 0.5-2, then soaking the degreased rabbit skin in the mixture, and stirring the mixture at a constant temperature of 32 ℃ for over night at a speed of 9 r/min;
(6) tanning
Uniformly mixing glutaraldehyde with the concentration of 12-15 mL/L, soda ash with the concentration of 1-5 g/L, salt with the concentration of 40-50 g/L and a fatting agent with the concentration of 0.5-1 mL/L, adjusting the pH value to 5-6, and dividing the mixture into a solution I and a solution II with the volume ratio of 2-3: 1; then, placing the rabbit skin treated in the step (5) in the solution I for tanning for 2-5 h, and then adding the solution II for further tanning for 15-20 h;
the fat-liquoring agent comprises sulfonated succinic acid ester and polyvalent metal salt in a weight ratio of 0.5-1: 0.5-1; the polyvalent metal salt is trivalent aluminum salt;
(7) neutralization
Placing the tanned rabbit skin in a neutralization solution at the temperature of 32 ℃, rotatably soaking for 20-25 h at the rotating speed of 3-5 r/min, taking out, standing for 5-7 h, and airing; the neutralizing solution comprises water, salt, anhydrous sodium sulphate and polyvinyl alcohol in a weight ratio of 5-10: 0.01-0.05: 0.1-0.5: 0.01-0.05.
2. The method for preparing rabbit fur with ecological hair loss prevention according to claim 1, wherein the final concentration of glutaraldehyde in step (1) is 0.5 mL/L.
3. The preparation method of the ecological rabbit fur capable of preventing hair loss according to claim 1, wherein the weight ratio of the water, the soda ash and the compound containing the sulfonic acid group in the step (5) is 5-10: 0.1: 0.5.
4. The method for preparing rabbit fur with ecological hair loss prevention according to claim 1 or 3, wherein the compound containing sulfonic acid groups is 4-vinylbenzenesulfonic acid, sodium 2-mercaptoethanesulfonate, sodium alcohol ethoxyglycerosulfonate or sulfamate.
5. The method for preparing ecological rabbit fur for preventing hair loss according to claim 1, wherein the concentration of glutaraldehyde in step (6) is 12 mL/L.
6. The method for preparing ecological rabbit fur for preventing hair loss according to claim 1, wherein the volume ratio of the solution I to the solution II in the step (6) is 2: 1.
7. The method for preparing ecological rabbit fur for preventing hair loss according to claim 1, wherein the weight ratio of red halloysite, sal ammoniac and pine nodular branch is 2:3: 2.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1837254A (en) * | 2005-02-22 | 2006-09-27 | 兰爱克谢斯德国有限责任公司 | Condensate containing acid radical |
| CN102282269A (en) * | 2009-05-14 | 2011-12-14 | 科莱恩金融(Bvi)有限公司 | Tanning process and tanning composition |
| CN103201396A (en) * | 2010-11-11 | 2013-07-10 | 科莱恩金融(Bvi)有限公司 | Non-metal tanning |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1837254A (en) * | 2005-02-22 | 2006-09-27 | 兰爱克谢斯德国有限责任公司 | Condensate containing acid radical |
| CN102282269A (en) * | 2009-05-14 | 2011-12-14 | 科莱恩金融(Bvi)有限公司 | Tanning process and tanning composition |
| CN103201396A (en) * | 2010-11-11 | 2013-07-10 | 科莱恩金融(Bvi)有限公司 | Non-metal tanning |
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