CN110804765A - Tussah silk degumming and bleaching method - Google Patents
Tussah silk degumming and bleaching method Download PDFInfo
- Publication number
- CN110804765A CN110804765A CN201911056016.3A CN201911056016A CN110804765A CN 110804765 A CN110804765 A CN 110804765A CN 201911056016 A CN201911056016 A CN 201911056016A CN 110804765 A CN110804765 A CN 110804765A
- Authority
- CN
- China
- Prior art keywords
- bleaching
- tussah silk
- degumming
- temperature
- parts
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01C—CHEMICAL OR BIOLOGICAL TREATMENT OF NATURAL FILAMENTARY OR FIBROUS MATERIAL TO OBTAIN FILAMENTS OR FIBRES FOR SPINNING; CARBONISING RAGS TO RECOVER ANIMAL FIBRES
- D01C3/00—Treatment of animal material, e.g. chemical scouring of wool
- D01C3/02—De-gumming silk
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Animal Husbandry (AREA)
- Molecular Biology (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Textile Engineering (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Detergent Compositions (AREA)
Abstract
The invention provides a tussah silk degumming and bleaching method, which comprises the following steps: (1) pre-dipping; (2) high-temperature high-pressure treatment: putting the tussah silk cut cocoons presoaked in the step (1) into a sealed tank with a stirring shaft, raising the pressure to 0.7-0.9MPa, raising the temperature to 100-120 ℃, keeping high-temperature and high-pressure treatment for 2-3 min, then removing the pressure and keeping the temperature, and starting the stirring shaft to turn over the tussah silk cut cocoons for 6-8 min; (3) degumming and bleaching; (4) and (5) washing and dehydrating. The invention greatly shortens the presoaking time, combines cocoon cooking and bleaching into one step, saves the steps of fully washing, completely washing and drying between presoaking and cocoon cooking and between cocoon cooking and bleaching, simplifies the processing technology and saves nearly 1/4 water in the whole procedure. The residual gum rate is controlled to be between 3% and 5%, and the residual oil rate is reduced to be below 0.5%, so that high breaking strength and high cleanliness are ensured, and the adhesion and hardening of silk are avoided.
Description
Technical Field
The invention relates to the technical field of silk processing, in particular to a tussah silk degumming and bleaching method.
Background
The traditional tussah silk boiling and bleaching process aims at the processing technology of leftover materials left by silk reeling, and has the problems that tussah silk glue drops differently, the fiber strength is influenced, and the problems of low cleanliness, continuous silk brittleness, continuous whiteness, high yellowing tendency, low fluffy degree of silk floss and the like easily occur.
CN103757713B discloses a refining process of tussah cut cocoons, which comprises the steps of presoaking (for 10-14 hours), fully washing and dehydrating, cocoon cooking (for 15-25 minutes), fully washing and dehydrating, bleaching (for 40 minutes), fully washing and dehydrating, softening, dehydrating, drying and opening cotton; in the whole process, the degumming and bleaching process of the tussah cut cocoons at least involves 6 steps, the time is long, the number of steps is more, the degumming and bleaching are two steps, and a large amount of water is needed for washing.
CN107083569B discloses a high-quality processing method of mulberry silk, which comprises the following steps: degumming mulberry silk by high-temperature high-pressure treatment, degumming treatment, steaming treatment and other procedures, wherein water vapor treatment is adopted for an internal mechanism for loosening mulberry silk fibers under the high-temperature high-pressure environment, but during the degumming treatment, ultrasonic waves with the frequency of 23-25kHz are adopted for treatment at 40-45 ℃ for 40-50min, and then further steaming is needed.
Disclosure of Invention
The invention provides a tussah silk degumming and bleaching method, which greatly shortens the presoaking time, combines cocoon cooking and bleaching into one step, saves the steps of fully washing, completely draining and drying between presoaking and cocoon cooking and between cocoon cooking and bleaching, simplifies the processing technology, saves about 1/4 water in the whole procedure, controls the residual gum rate between 3 percent and 5 percent, reduces the residual oil rate below 0.5 percent, ensures high breaking strength and high cleanliness, and avoids the adhesion and hardening of silk.
The technical scheme of the invention is realized as follows: a tussah silk degumming and bleaching method comprises the following steps:
(1) pre-dipping: placing the tussah silk cut cocoon to be treated into the pre-soaking solution, heating to 50-60 deg.C, stirring continuously, and soaking for 40-60 min;
(2) high-temperature high-pressure treatment: putting the tussah silk cut cocoons presoaked in the step (1) into a sealed tank with a stirring shaft, raising the pressure to 0.7-0.9MPa, raising the temperature to 100-120 ℃, keeping high-temperature and high-pressure treatment for 2-3 min, then removing the pressure and keeping the temperature, and starting the stirring shaft to turn over the tussah silk cut cocoons for 6-8 min;
(3) degumming and bleaching: placing the tussah silk cut cocoons processed in the step (2) into degumming bleaching liquid, heating to 100 ℃, controlling an air inlet valve, and performing air-starting bleaching for 40-50 min;
(4) washing and dehydrating: and (4) fishing out the tussah silk cut cocoons in the step (3), fully washing and drying.
Further, in the step (1), the pre-immersion liquid comprises the following raw materials in parts by weight: 0.09-0.12 part of sodium carbonate, 0.08-0.10 part of 105 detergent, 100 parts of water, 9-10 of pH value, and the weight ratio of the tussah silk cut cocoons to be treated to the pre-immersion liquid is 0.8-1: 10.
Further, in the step (3), the degumming bleaching solution comprises the following raw materials in parts by weight: 0.3-0.5 part of sodium carbonate, 0.45-0.7 part of sodium silicate, 6.0-8.5 parts of hydrogen peroxide, 0.3-0.4 part of pancreas bleaching T and 100 parts of water, wherein the weight ratio of the tussah silk cut cocoon to the degumming bleaching liquid is 0.9-1: 10.
The invention has the beneficial effects that:
the silk fiber is subjected to preliminary expansion and loosening through presoaking, the silk fiber is further expanded and loosened through high-temperature high-pressure treatment, meanwhile, a pre-immersion liquid remained on the surface of the silk fiber enters the expanded sericin, so that subsequent degumming and bleaching are facilitated, then, the pressure is removed, the temperature is kept for 6-8 min, the water entering the silk fiber enters and is partially evaporated, and a stirring shaft is adopted for stirring, so that on one hand, the water vapor is quickly discharged, and part of water is discharged, so that the degumming and bleaching liquid can enter a sericin structure, and the subsequent degumming and bleaching are accelerated; on the other hand, local overheating of tussah silk cut cocoons is avoided.
Compared with the degumming and bleaching process in CN103757713B, the method greatly shortens the presoaking time, combines cocoon cooking and bleaching into one step, saves the steps of fully washing, completely draining and fully drying between presoaking and cocoon cooking as well as between cocoon cooking and bleaching, simplifies the processing process, and saves nearly 1/4 water in the whole process.
The preparation method controls the residual gum rate to be between 3% and 5%, reduces the residual oil rate to be below 0.5%, ensures high breaking strength and high cleanliness, and avoids the adhesion and hardening of the silk.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
Example one
A tussah silk degumming and bleaching method comprises the following steps:
(1) pre-dipping: placing the tussah silk cut cocoon to be treated into the pre-soaking solution, heating to 50 deg.C, stirring continuously, and soaking for 60 min; the pre-immersion liquid comprises the following raw materials in parts by weight: 0.09 part of sodium carbonate, 0.08 part of 105 detergent, 100 parts of water, 9-10 of pH value, and the weight ratio of the tussah silk cut cocoons to be treated to the pre-immersion liquid is 0.8: 10;
(2) high-temperature high-pressure treatment: placing the tussah silk cut cocoons pre-soaked in the step (1) into a sealing tank with a stirring shaft, raising the pressure to 0.7MPa, raising the temperature to 100 ℃, keeping high-temperature and high-pressure treatment for 3min, then removing the pressure and keeping the temperature, and starting the stirring shaft to turn over the tussah silk cut cocoons for 8 min;
(3) degumming and bleaching: placing the tussah silk cut cocoons processed in the step (2) into degumming bleaching liquid, heating to 100 ℃, controlling an air inlet valve, and performing air-starting bleaching for 40 min; the degumming bleaching liquid comprises the following raw materials in parts by weight: 0.3 part of sodium carbonate, 0.45 part of sodium silicate, 6.0 parts of hydrogen peroxide, 0.3 part of pancreas bleaching T and 100 parts of water, wherein the weight ratio of the tussah silk cut cocoons to the degumming bleaching solution is 0.9: 10;
(4) washing and dehydrating: and (4) fishing out the tussah silk cut cocoons in the step (3), fully washing and drying.
Example two
A tussah silk degumming and bleaching method comprises the following steps:
(1) pre-dipping: placing the tussah silk cut cocoon to be treated into the pre-soaking solution, heating to 55 deg.C, stirring continuously, and soaking for 45 min; the pre-immersion liquid comprises the following raw materials in parts by weight: 0.12 part of sodium carbonate, 0.10 part of 105 detergent, 100 parts of water, 9-10 of pH value, and the weight ratio of the tussah silk cut cocoons to be treated to the pre-immersion liquid is 1: 10;
(2) high-temperature high-pressure treatment: putting the tussah silk cut cocoons presoaked in the step (1) into a sealing tank with a stirring shaft, raising the pressure to 0.9MPa, raising the temperature to 110 ℃, keeping high-temperature and high-pressure treatment for 2.8min, then removing the pressure and keeping the temperature, and starting the stirring shaft to turn over the tussah silk cut cocoons for 7.5 min;
(3) degumming and bleaching: placing the tussah silk cut cocoons processed in the step (2) into degumming bleaching liquid, heating to 100 ℃, controlling an air inlet valve, and performing air-starting bleaching for 50 min; the degumming bleaching liquid comprises the following raw materials in parts by weight: 0.5 part of sodium carbonate, 0.7 part of sodium silicate, 8.5 parts of hydrogen peroxide, 0.4 part of pancreas bleaching T and 100 parts of water, wherein the weight ratio of the tussah silk cut cocoons to the degumming bleaching solution is 1: 10;
(4) washing and dehydrating: and (4) fishing out the tussah silk cut cocoons in the step (3), fully washing and drying.
EXAMPLE III
A tussah silk degumming and bleaching method comprises the following steps:
(1) pre-dipping: placing the tussah silk cut cocoon to be treated into the pre-soaking solution, heating to 60 deg.C, stirring continuously, and soaking for 40 min; the pre-immersion liquid comprises the following raw materials in parts by weight: 0.10 part of sodium carbonate, 0.09 part of 105 detergent, 100 parts of water, 9-10 of pH value, and the weight ratio of the tussah silk cut cocoons to be treated to the pre-soaking liquid is 0.9: 10;
(2) high-temperature high-pressure treatment: putting the tussah silk cut cocoons presoaked in the step (1) into a sealing tank with a stirring shaft, raising the pressure to 0.8MPa, raising the temperature to 120 ℃, keeping high-temperature and high-pressure treatment for 2min, then removing the pressure and keeping the temperature, and starting the stirring shaft to turn over the tussah silk cut cocoons for 6 min;
(3) degumming and bleaching: placing the tussah silk cut cocoons processed in the step (2) into degumming bleaching liquid, heating to 100 ℃, controlling an air inlet valve, and performing air-starting bleaching for 45 min; the degumming bleaching liquid comprises the following raw materials in parts by weight: 0.45 part of sodium carbonate, 0.6 part of sodium silicate, 7.0 parts of hydrogen peroxide, 0.32 part of pancreas bleaching T and 100 parts of water, wherein the weight ratio of the tussah silk cut cocoons to the degumming bleaching solution is 0.95: 10;
(4) washing and dehydrating: and (4) fishing out the tussah silk cut cocoons in the step (3), fully washing and drying.
Example four
A tussah silk degumming and bleaching method comprises the following steps:
(1) pre-dipping: placing the tussah silk cut cocoon to be treated into the pre-soaking solution, heating to 53 deg.C, stirring continuously, and soaking for 50 min; the pre-immersion liquid comprises the following raw materials in parts by weight: 0.11 part of sodium carbonate, 0.10 part of 105 detergent, 100 parts of water, 9-10 of pH value, and the weight ratio of the tussah silk cut cocoons to be treated to the pre-immersion liquid is 0.9: 10;
(2) high-temperature high-pressure treatment: putting the tussah silk cut cocoons presoaked in the step (1) into a sealing tank with a stirring shaft, raising the pressure to 0.8MPa, raising the temperature to 115 ℃, keeping high-temperature and high-pressure treatment for 2.5min, then removing the pressure and keeping the temperature, and starting the stirring shaft to turn over the tussah silk cut cocoons for 7 min;
(3) degumming and bleaching: placing the tussah silk cut cocoons processed in the step (2) into degumming bleaching liquid, heating to 100 ℃, controlling an air inlet valve, and performing air-starting bleaching for 44 min; the degumming bleaching liquid comprises the following raw materials in parts by weight: 0.4 part of sodium carbonate, 0.5 part of sodium silicate, 8.0 parts of hydrogen peroxide, 0.35 part of pancreas bleaching T and 100 parts of water, wherein the weight ratio of the tussah silk cut cocoons to the degumming bleaching solution is 0.9: 10.
(4) Washing and dehydrating: and (4) fishing out the tussah silk cut cocoons in the step (3), fully washing and drying.
Comparative example 1
This embodiment is substantially the same as the first embodiment, except that: in the step (2), the tussah silk cut cocoons presoaked in the step (1) are placed in a sealed tank with a stirring shaft, the pressure is increased to 0.8MPa, the temperature is increased to 115 ℃, the high-temperature and high-pressure treatment is kept for 2.5min, and then the pressure and the temperature are removed.
Comparative example No. two
This example used the degumming and bleaching process in CN 103757713B.
Softening, dehydrating, drying and opening the tussah silk cut cocoons degummed, bleached and washed and dehydrated in the first to fourth examples and the first and second comparative examples, and then performing performance test on the opened cotton sheets:
testing the residual glue rate of the silk by adopting an FZ/T40004 and 2009 silk glue content test method;
testing the residual oil rate of the silk by adopting an oil content test method of the silk in the FZ/T43016-;
testing the breaking strength of the silk by adopting a GB/T1798-2008 raw silk test method;
the clean inspection of the silk is carried out by adopting a GB/T1798-2008 raw silk test method.
The performance test data is as follows:
when the sericin content of the silk exceeds 5%, the luster of the silk can be influenced, the formed product is easy to decolor, harden and yellow, the sericin content is lower than 3%, the tensile force of silk fibers is insufficient, the silk is brittle and easy to break, and the service life of the product is influenced; the oil content of silk is over 0.5%, the spinnability is poor, and the silk is easy to be bonded, hardened and drawn.
As can be seen from the table, the preparation method of the invention controls the residual gum rate to be between 3% and 5%, and reduces the residual oil rate to be below 0.5%, thereby ensuring high breaking strength and high cleanliness, and avoiding the adhesion and hardening of silk. The residual gum rate, the breaking strength and the cleanliness of the first to fourth examples are basically the same as those of the second comparative example, and the differences are not great, but the residual oil rate is reduced to below 0.5 percent compared with that of the second comparative example; compared with the degumming and bleaching process in CN103757713B, the degumming and bleaching preparation method greatly shortens the presoaking time, combines cocoon cooking and bleaching into one step, saves the steps of fully washing, completely cleaning and drying between presoaking and cocoon cooking and between cocoon cooking and bleaching, simplifies the processing process, and saves nearly 1/4 water in the whole process. Although the breaking strength of the examples one to four of the present invention is slightly reduced compared to the comparative example one, the residual gum rate is reduced to 5% or less, the residual oil rate is reduced to 0.5% or less, and the cleanliness of silk is mentioned to be 95 or more.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (3)
1. The tussah silk degumming and bleaching method is characterized by comprising the following steps:
(1) pre-dipping: placing the tussah silk cut cocoon to be treated into the pre-soaking solution, heating to 50-60 deg.C, stirring continuously, and soaking for 40-60 min;
(2) high-temperature high-pressure treatment: putting the tussah silk cut cocoons presoaked in the step (1) into a sealed tank with a stirring shaft, raising the pressure to 0.7-0.9MPa, raising the temperature to 100-120 ℃, keeping high-temperature and high-pressure treatment for 2-3 min, then removing the pressure and keeping the temperature, and starting the stirring shaft to turn over the tussah silk cut cocoons for 6-8 min;
(3) degumming and bleaching: placing the tussah silk cut cocoons processed in the step (2) into degumming bleaching liquid, heating to 100 ℃, controlling an air inlet valve, and performing air-starting bleaching for 40-50 min;
(4) washing and dehydrating: and (4) fishing out the tussah silk cut cocoons in the step (3), fully washing and drying.
2. The tussah silk degumming and bleaching method according to claim 1, wherein in step (1), further, in step (1), the pre-soaking solution comprises the following raw materials in parts by weight: 0.09-0.12 part of sodium carbonate, 0.08-0.10 part of 105 detergent, 100 parts of water, 9-10 of pH value, and the weight ratio of the tussah silk cut cocoons to be treated to the pre-immersion liquid is 0.8-1: 10.
3. The tussah silk degumming and bleaching method according to claim 1, wherein in the step (3), the degumming and bleaching solution comprises the following raw materials in parts by weight: 0.3-0.5 part of sodium carbonate, 0.45-0.7 part of sodium silicate, 6.0-8.5 parts of hydrogen peroxide, 0.3-0.4 part of pancreas bleaching T and 100 parts of water, wherein the weight ratio of the tussah silk cut cocoon to the degumming bleaching liquid is 0.9-1: 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911056016.3A CN110804765B (en) | 2019-10-31 | 2019-10-31 | Tussah silk degumming and bleaching method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911056016.3A CN110804765B (en) | 2019-10-31 | 2019-10-31 | Tussah silk degumming and bleaching method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110804765A true CN110804765A (en) | 2020-02-18 |
| CN110804765B CN110804765B (en) | 2022-01-04 |
Family
ID=69489956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911056016.3A Active CN110804765B (en) | 2019-10-31 | 2019-10-31 | Tussah silk degumming and bleaching method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110804765B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103757713A (en) * | 2013-12-19 | 2014-04-30 | 河南省民兴茧丝绸有限责任公司 | Refining process for tussah cut cocoon |
| CN103789846A (en) * | 2014-01-20 | 2014-05-14 | 丹东中天柞蚕生物科技有限公司 | Process method for refining neutral protease from tussah cocoon shell |
| CN106367944A (en) * | 2016-11-18 | 2017-02-01 | 辽东学院 | Tussah silk degumming and bleaching liquid and method and silk |
| CN107083569A (en) * | 2017-05-10 | 2017-08-22 | 安徽三利丝绸集团有限公司 | A kind of high-quality processing and treating method of mulberry silk |
-
2019
- 2019-10-31 CN CN201911056016.3A patent/CN110804765B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103757713A (en) * | 2013-12-19 | 2014-04-30 | 河南省民兴茧丝绸有限责任公司 | Refining process for tussah cut cocoon |
| CN103789846A (en) * | 2014-01-20 | 2014-05-14 | 丹东中天柞蚕生物科技有限公司 | Process method for refining neutral protease from tussah cocoon shell |
| CN106367944A (en) * | 2016-11-18 | 2017-02-01 | 辽东学院 | Tussah silk degumming and bleaching liquid and method and silk |
| CN107083569A (en) * | 2017-05-10 | 2017-08-22 | 安徽三利丝绸集团有限公司 | A kind of high-quality processing and treating method of mulberry silk |
Non-Patent Citations (1)
| Title |
|---|
| 陈明珍等: "野生柞蚕丝绵脱胶、漂白工艺探讨", 《武汉科技学院学报》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110804765B (en) | 2022-01-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104047063B (en) | A kind of steam explosion and alkali process the method for the preparation weaving cotton stalk bark fiber that combines | |
| CN101638811A (en) | Degumming technology of mulberry bark | |
| KR20140062642A (en) | Degumming method of bast fiber | |
| CN106012043A (en) | Degumming and bleaching process of natural bamboo fiber | |
| CN106319641A (en) | High-gum-content raw hemp fiber degumming method | |
| CN103233280A (en) | Method for performing one bath of ramie fiber preparation and chemical modification | |
| CN101509151A (en) | Quick degumming method for low-alkali cotton stalk bark fibre in high temperature | |
| CN101177790A (en) | Explosion-high temperature combined hemp degumming method | |
| CN110804765B (en) | Tussah silk degumming and bleaching method | |
| CN102936757A (en) | Refining technology of silkworm oil rotten cocoons | |
| CN104178820A (en) | Fibrilia degumming method with waste liquid with low COD content | |
| CN101130887A (en) | Method for degumming jute by using complex enzyme | |
| CN101130894B (en) | Method for degumming jute by using complex enzyme | |
| CN106868606A (en) | A kind of combination degumming technique of sisal hemp | |
| CN113605086B (en) | Preparation method of silk floss | |
| WO2014101867A1 (en) | Ultrahigh-viscosity refined cotton production technology and dry conveyance apparatus for cotton pulp of refined cotton | |
| CN110541323A (en) | Method for preparing pulp by using hemp raw material | |
| CN100560820C (en) | The method that applying composite enzyme comes unstuck to jute | |
| CN110359305A (en) | A kind of Pueraria lobota flaxen fiber bleaching processing method | |
| CN101130892A (en) | Method for degumming jute by using complex enzyme | |
| CN100575571C (en) | The method that applying composite enzyme comes unstuck to jute | |
| KR20180062821A (en) | Silk yarn with improved mechancial properties and its preparation method | |
| CN113062021A (en) | Flax yarn production treatment process | |
| KR101391032B1 (en) | Method for Preparing of PuIp from Bast Fiber | |
| CN102560693A (en) | Method for chemical degumming of jute fiber using compound enzyme |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A method of degumming and bleaching of Wild silk Effective date of registration: 20230630 Granted publication date: 20220104 Pledgee: Henan Sheqi Rural Commercial Bank Co.,Ltd. Pledgor: HENAN MINXING BIOTECHNOLOGY CO.,LTD. Registration number: Y2023980046817 |