CN101545146A - Method for increasing silk fiber strength - Google Patents
Method for increasing silk fiber strength Download PDFInfo
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- CN101545146A CN101545146A CN200910103772A CN200910103772A CN101545146A CN 101545146 A CN101545146 A CN 101545146A CN 200910103772 A CN200910103772 A CN 200910103772A CN 200910103772 A CN200910103772 A CN 200910103772A CN 101545146 A CN101545146 A CN 101545146A
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Abstract
The invention relates to a method for increasing silk fiber strength. The method comprises the following steps: firstly, swelling silk fiber; secondly, stretching the silk fiber; and finally, carrying out natural drying of the silk fiber under the condition of maintaining tensile force to obtain silk fiber with high crystallinity, tendency and strength. The strength of the silk fiber undergoing different treatments can be increased by 20 to 75 percent; meanwhile, the method is simple and easy to operate, has low cost and can be used for industrial mass production.
Description
Technical field
The present invention relates to the Textile Engineering technical field, particularly relate to a kind of method that improves silk fiber strength.
Background technology
Silk fiber is a natural fabric, has the good mechanical performance, has good affinity with human body skin.But, be protein fibre equally, the vertical silk of spider but has better mechanical property, and intensity almost is about 3 times of fibroin fiber, and is also stronger than steel wire.But spider silk fiber is difficult for obtaining.Therefore, people are very popular with the research that the spider gene changes silkworm over to, and annual all have a large amount of projects and funds to support this research.Though but drop into a lot, make progress little.
If silk fiber also as spider silk fiber, has very high brute force, so,, will have great application potential and economic worth because silk fiber obtains easily.High-strength silk production technology can be used to prepare light bulletproof jacket, improves the silk fabric quality, makes silk production occur the fracture of wire phenomenon less and enhances productivity, reduces silk production cost or the like.
Existing discovering fixed silkworm, silkworm carried out external force traction reel off raw silk from cocoons, and the fracture strength of silk can be improved 70～100%, prepares high-intensity silk.But fixedly silkworm external force is reeled off raw silk from cocoons, can't large-scale industrial production.Therefore, but the new technology that high-strength silk is produced in research, the new large-scale industrialization of exploitation will be significant.
Summary of the invention
The object of the present invention is to provide a kind of method that improves silk fiber strength, to prepare high-strength silk fiber.The technical thought of this method provides certain condition, behind swelling silk gum, fibroin albumen,, improve degree of crystallinity, the degree of orientation of silk fiber by air dry under the condition of stretching and maintenance tension force, thereby improve the brute force of silk fiber, prepare the high-tenacity silk fiber.
The present invention realizes by following steps:
Becoming the silk fiber of long filament to put into 88～95 ℃ water or mass percent concentration filature is 0.2%～0.4% NaHCO
3Constant temperature swelling 30min stretches then in the aqueous solution, and the doubly speed 8%～40% that stretches keeps air dry under the condition of tension force, promptly obtains degree of crystallinity height, trend degree height, silk fiber that brute force is high.
For further improving intensity, can stretched silk fiber repeatedly be stretched again, the total stretching that stretches for the second time is speed 50% doubly, and total stretching of La Shening for the third time is speed 55% doubly.
The swelling of fibroin, silk gum is simulation fibroin and the state of silk gum in the silkworm body, to improve the doubly speed that stretches.Times speed that stretches is high more, and powerful increase is big more.
Advantage of the present invention is:
This method can prepare high-strength silk fiber, and experimental data shows that the silk fiber of different disposal is powerful to improve 20～75%, and simultaneously, method is simple for this, and cost is low, can large-scale industrialization production.
The specific embodiment
Embodiment 1:
Become the silk fiber of long filament to put into 95 ℃ of water constant temperature swelling 30min filature, carry out stretching and winding then, keep the tension force drying, the doubly speed 8% that stretches powerfully improves 20%.
Embodiment 2:
Becoming the silk fiber of long filament to put into 90 ℃ of mass percent concentrations filature is 0.2% NaHCO
3Constant temperature swelling 30min in the aqueous solution carries out stretching and winding then, keeps the tension force drying, the doubly speed 24% that stretches, and brute force improves 40%.
Embodiment 3:
Becoming the silk fiber of long filament to put into 88 ℃ of mass percent concentrations filature is 0.4% NaHCO
3Constant temperature swelling 30min in the aqueous solution carries out stretching and winding then, keeps the tension force drying, the doubly speed 40% that stretches, and brute force improves 60%.
Embodiment 4:
Become the silk fiber of long filament to put into 95 ℃ of water constant temperature swelling 30min filature, carry out stretching and winding then, the doubly speed 8% that stretches powerfully improves 20%; After waiting to keep the tension force drying, it is 0.4% NaHCO that silk fiber is put into 88 ℃ of mass percent concentrations
3Constant temperature swelling 30min in the aqueous solution carries out stretching and winding then the 2nd time, and total times speed that stretches reaches 50%, powerful raising 70%.
Embodiment 5:
Become the silk fiber of long filament to put into 95 ℃ of water constant temperature swelling 30min filature, carry out stretching and winding then, the doubly speed 8% that stretches powerfully improves 20%; After waiting to keep the tension force drying, it is 0.3% NaHCO that silk fiber is put into 88 ℃ of mass percent concentrations
3Constant temperature swelling 30min in the aqueous solution carries out stretching and winding then the 2nd time, and total times speed that stretches reaches 40%, powerful raising 65%; After waiting to keep the tension force drying, repeat secondary stretching pre-treatment after, carry out the 3rd time and stretch, total times speed that stretches reaches 55%, powerfully improves 75%.
Claims (3)
1, a kind of method that improves silk fiber strength is characterized in that, earlier silk fiber is carried out swelling, stretches then, and air dry under the condition that keeps tension force at last promptly obtains degree of crystallinity height, trend degree height, silk fiber that brute force is high.
2, method according to claim 1 is characterized in that, becoming the silk fiber of long filament to put into 88～95 ℃ water or mass percent concentration filature is 0.2%～0.4% NaHCO
3Constant temperature swelling 30min stretches then in the aqueous solution, and the doubly speed 8%～40% that stretches keeps air dry under the condition of tension force, promptly obtains degree of crystallinity height, trend degree height, silk fiber that brute force is high.
3, method according to claim 1 and 2 is characterized in that, stretched silk fiber is stretched once more, and the total stretching that stretches for the second time is speed 50% doubly, and total stretching of La Shening for the third time is speed 55% doubly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910103772A CN101545146A (en) | 2009-05-04 | 2009-05-04 | Method for increasing silk fiber strength |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910103772A CN101545146A (en) | 2009-05-04 | 2009-05-04 | Method for increasing silk fiber strength |
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| Publication Number | Publication Date |
|---|---|
| CN101545146A true CN101545146A (en) | 2009-09-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200910103772A Pending CN101545146A (en) | 2009-05-04 | 2009-05-04 | Method for increasing silk fiber strength |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104790087A (en) * | 2015-03-29 | 2015-07-22 | 吴江市鼎盛丝绸有限公司 | Technology method for obtaining high-strength silk fibers and preparation device for high-strength silk fibers |
| CN105256544A (en) * | 2015-10-28 | 2016-01-20 | 南通纺织丝绸产业技术研究院 | High-performance natural silk fiber and preparation method thereof |
| WO2017070873A1 (en) * | 2015-10-28 | 2017-05-04 | 南通纺织丝绸产业技术研究院 | High performance natural silk fiber and preparation method thereof |
| CN108589040A (en) * | 2018-04-26 | 2018-09-28 | 海斯摩尔生物科技有限公司 | A kind of preparation method of high-hydroscopicity chitosan mask substrate |
| CN108642858A (en) * | 2018-04-26 | 2018-10-12 | 海斯摩尔生物科技有限公司 | A kind of preparation method of controlled degradation suture |
| CN108660741A (en) * | 2018-04-26 | 2018-10-16 | 海斯摩尔生物科技有限公司 | A kind of preparation method of antibacterial chitin fiber |
| CN108660737A (en) * | 2018-04-26 | 2018-10-16 | 东华大学 | A kind of preparation method of high-strength suture |
| CN108893997A (en) * | 2018-06-01 | 2018-11-27 | 苏州先蚕丝绸有限公司 | A kind of preparation method being swollen natural silk fibrous material |
-
2009
- 2009-05-04 CN CN200910103772A patent/CN101545146A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104790087A (en) * | 2015-03-29 | 2015-07-22 | 吴江市鼎盛丝绸有限公司 | Technology method for obtaining high-strength silk fibers and preparation device for high-strength silk fibers |
| CN105256544A (en) * | 2015-10-28 | 2016-01-20 | 南通纺织丝绸产业技术研究院 | High-performance natural silk fiber and preparation method thereof |
| WO2017070873A1 (en) * | 2015-10-28 | 2017-05-04 | 南通纺织丝绸产业技术研究院 | High performance natural silk fiber and preparation method thereof |
| EP3369859A4 (en) * | 2015-10-28 | 2019-06-19 | Nantong Textile & Silk Industrial Technology Research Institute | High performance natural silk fiber and preparation method thereof |
| CN108589040A (en) * | 2018-04-26 | 2018-09-28 | 海斯摩尔生物科技有限公司 | A kind of preparation method of high-hydroscopicity chitosan mask substrate |
| CN108642858A (en) * | 2018-04-26 | 2018-10-12 | 海斯摩尔生物科技有限公司 | A kind of preparation method of controlled degradation suture |
| CN108660741A (en) * | 2018-04-26 | 2018-10-16 | 海斯摩尔生物科技有限公司 | A kind of preparation method of antibacterial chitin fiber |
| CN108660737A (en) * | 2018-04-26 | 2018-10-16 | 东华大学 | A kind of preparation method of high-strength suture |
| CN108589040B (en) * | 2018-04-26 | 2019-12-06 | 海斯摩尔生物科技有限公司 | Preparation method of high-water-absorption chitosan mask base cloth |
| CN108642858B (en) * | 2018-04-26 | 2020-08-21 | 海斯摩尔生物科技有限公司 | Preparation method of controllable degradable medical suture |
| CN108660737B (en) * | 2018-04-26 | 2020-08-25 | 东华大学 | Preparation method of high-strength medical suture |
| CN108893997A (en) * | 2018-06-01 | 2018-11-27 | 苏州先蚕丝绸有限公司 | A kind of preparation method being swollen natural silk fibrous material |
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Open date: 20090930 |