CN104878467A - Nano-aluminum oxide-feeding silkworm rearing method for preparing high-performance silk and product prepared by nano-aluminum oxide-feeding silkworm rearing method - Google Patents
Nano-aluminum oxide-feeding silkworm rearing method for preparing high-performance silk and product prepared by nano-aluminum oxide-feeding silkworm rearing method Download PDFInfo
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Abstract
The invention relates to a nano-aluminum oxide-feeding silkworm rearing method for preparing a high-performance silk and a product prepared by the nano-aluminum oxide-feeding silkworm rearing method. The nano-aluminum oxide-feeding silkworm rearing method comprises the following specific steps: adding nano-aluminum oxide to a silkworm artificial feed; and entering the nano-aluminum oxide into sericterium of a silkworm employing the absorption and transformation functions of the silkworm, and cocooning by the silkworm, so as to obtain the high-performance silk containing the nano-aluminum oxide. According to the method provided by the invention, the silk is modified on the premise that the natural quality of the silk is not damaged, so that the obtained silk has relatively good mechanical property.
Description
Technical field
The invention belongs to silk fiber and modification field thereof, relate to a kind of nano-aluminium oxide preparing high tenacity silk and freshen food and educate silkworm method and goods thereof.
Background technology
By the oozy spinning solution be made up of protein of sericterium when matured silkworm cocoons, the continuous fiber solidifying formation is in atmosphere called silk.As a kind of biological fiber, silk not only has good glossiness and comfortable sense of touch, also has stronger mechanical performance and good biocompatibility, is all widely used at weaving, medical science, cosmetics and biological field.
Although boiled silk has higher fracture strength, be about 400MPa, its elongation at break and energy to failure only have 15% and about 30J/g, need in actual applications to be improved further.Therefore in order to improve the performance of silk and widen its Application Areas, need to carry out modification to silk.
There is research by strengthening the performance of silk in the method for silk surface coated particle.Such as publication number is that the Chinese patent of CN103572585A discloses a kind of titania modified silk and preparation method thereof.In patent, inventor take titanate esters as reactant, makes solvent with benzinum, and the hydrated titanium dioxide of original position room temperature synthesis of densified, is covered in silk surface.Although can 22% be reached by the elongation at break of the silk of the method modification, energy to failure is 22 ~ 74J/g, intensity is 300 ~ 680MPa, but the method for this modified natural silk needs with an organic solvent, and produce if quantize needs more input in solvent recovery process.Moreover, titanium dioxide is covered in the one's best quality such as color and luster, sense of touch, gas permeability that silk itself can be damaged in silk surface.
Other some researchs then use the nano particle adding metal oxide in silk fibroin solution to be spun into the method for fiber more by artificial means to improve the performance of silk.Such as publication number is that the Chinese patent of CN102912470A discloses regenerated silk fiber of a kind of metal oxide nanoparticles activeness and quietness and preparation method thereof.In this invention, researcher makes regenerated silk fibroin solution after being come unstuck by natural silk, regulates its calcium ion concentration to 0.15 ~ 0.3mol/L, then with a certain proportion of metal oxide (TiO
2, Fe
3o
4, ZnO, Al
2o
3or ZrO
2) hydrosol mixing, concentrated, be at room temperature dry spun into silk, finally carry out post processing with ethanol-water mixture, the regenerated silk fiber elongation at break obtained is 50% ~ 150%, and energy to failure is 30 ~ 100J/g, and fracture strength is 50 ~ 250MPa.Publication number is that the Chinese patent of CN103572395A discloses a kind of activeness and quietness regenerated silk fiber and preparation method thereof.Researcher is on the basis of CN102912470A at aforementioned publication number, adds graphene oxide solution again, make the obtained regenerated fibroin fiber that uses the same method in regenerated silk fibroin solution.The regenerated silk fiber elongation at break that the method obtains is 20% ~ 150%, and energy to failure is 30 ~ 100J/g, and fracture strength is 70 ~ 380MPa.The toughness of these two kinds of methods to silk all improves a lot, but but fails to keep its fracture strength a good level.And complicated by the process operation of regenerated silk fibroin solution-polymerized SBR, condition is harsh, the cycle is long, yield poorly, industrialized possibility is very little.
Also there is researcher in feed of mulberry silkworm, add some functional particles, thus obtain the silk with some specific function.Publication number is that the Chinese patent of CN1395861A discloses a kind of silkworm feed containing functional particle and the silk produced with this feed feeding and the goods using this silk, in this patent, the functional particle such as mineral, pigment is added feeding silkworm in silkworm feed by inventor, spins function silk by the effect of silkworm sorption enhanced.Publication number be the Chinese patent of CN1608489 disclose a kind of silkworm feed and feed raise the silk that this feed is produced and the squeeze using this.This patent is then water-soluble for the functional particles such as the zeolite of ormal weight, noctilucence stone or other solvents are added feeding silkworm in silkworm feed obtain silk.These two patents need functional particle used to carry out screening and processing freshening in food process, and because diameter of particle is comparatively large, the feed being easy to affect silkworm grows, and causes silk quality and production declining.Its result shows again, and functional particle is more to be present in silk gum, and silk in use, and mostly need to come unstuck, so its modified effect is just very little.And the two does not all provide the Mechanical Characteristics of gained silk, only represent that gained silk has the function of the particulate that some add, can range of application narrow.
Summary of the invention
The object of this invention is to provide a kind of nano-aluminium oxide preparing high tenacity silk to freshen food and educate silkworm method and goods thereof, better for fields such as organization bracket engineering, weaving and medical science.In the present invention, nano-aluminium oxide is blended in feeding silkworm in silkworm feed, by the absorption of silkworm self, makes nano-aluminium oxide be mixed into silk, to improve the toughness of silk.The high tenacity silk that this method obtains, the multivalence aluminium element in nano-aluminium oxide occurs interact and form boundary layer by hydrogen bond, chelating mode and fibroin albumen, and degumed silk can keep good modified effect.And this method can not reduce its intensity while raising silk toughness, other fine quality of silk also can not be damaged.Whole process environmental protection, simple and easy to do, can implement in normal silkworm rearing process, can suitability for industrialized production be realized.
A kind of nano-aluminium oxide preparing high tenacity silk of the present invention freshens food and educates silkworm method, in silkworm artificial feed and silkworm feed, add nano-aluminium oxide and feed silkworm, absorb nano-aluminium oxide by silkworm and enter sericterium and final combination by nano-aluminium oxide in spinning process enters silk, namely obtain high tenacity silk;
Be specially: silkworm an age to four age feeding do not add the silkworm feed of nano-aluminium oxide, start feeding five second day ages and with the addition of the mixed feed that mass percent is 1 ~ 3% nano-aluminium oxide, cocoon until be placed on small straw bundles to spin cocoons.Silkworm five the length of times body of gland proportion anxious to increase, five age forage protein be increased to 96% in the retention ratio of its sericterium gradually by 9%, the synthesis of its silk-fibroin is mainly carried out in five length of times as seen.Therefore select to add food nano-aluminium oxide five length of times and can obtain the highest raw material availability and optimum efficiency.
There is research by multiple-pulse vapor infiltration method, the elements such as titanium, aluminium, zinc to be penetrated in the natural spider's thread, be connected with covalent bond or coordinate bond with protein molecule after reactant enters, form metal-protein complex compound.Protein molecule in spider silk unformed area is connected by metal, and its mechanical property is improved greatly.The present invention then educates silkworm method and is added in silk by freshening food by nano-aluminium oxide, and aluminium element is connected with covalent bond or coordinate bond with silk fibroin molecular, forms aluminium-protein complex, improves the mechanical property of silk; Meanwhile, because aluminium element and silk fibroin molecular can form coordinate bond and hydrogen bond, hinder random conformation and alpha helical conformation to the transformation of β-pleated sheet conformation, cause the degree of crystallinity of silk to reduce; Therefore, consider, if the addition of nano-aluminium oxide is too high, the nanoparticle concentration entering sericterium is too high, be then unfavorable for silk-fibroin crystallization; And too much additive will inevitably affect the normal growth of silkworm, therefore the addition of nano-aluminium oxide required for the present invention is lower, mass percent is only 1 ~ 3%, experiment show this addition do not affect silkworm normal food-intake, eating speed, grow and cocoon.
As preferred technical scheme:
The nano-aluminium oxide preparing high tenacity silk as above freshens food and educates a silkworm method, and described mixed feed refers to and in silkworm feed, is evenly mixed into a certain amount of nano-aluminium oxide and the feed heating shortening; The concrete preparation process of described mixed feed comprises the following steps:
(1) nano-aluminium oxide is soluble in water, make nano-aluminium oxide solution;
(2) nano-aluminium oxide solution and silkworm feed are stirred, then heat, after cooling, namely make mixed feed;
Wherein, the quality of water is 2 ~ 3 times of silkworm feed.
The nano-aluminium oxide preparing high tenacity silk as above freshens food and educates a silkworm method, and described nano-aluminium oxide solution is before mixing with silkworm feed, and first ultrasonic 15 ~ 30min, makes nanoparticle dispersion even.
The nano-aluminium oxide preparing high tenacity silk as above freshens food and educates a silkworm method, and described heating refers to puts into micro-wave oven heating 3 ~ 6min, and the power output of micro-wave oven is 800 ~ 1000W.
The nano-aluminium oxide preparing high tenacity silk as above freshens food and educates a silkworm method, and the size range of described nano-aluminium oxide is 50 ~ 600nm.
The present invention's nano-aluminium oxide used is small-sized, and has water-soluble preferably, is scattered in water, then mixes with feed through ultrasonic Absorbable organic halogens afterwards.Mixed feed is through heating using microwave, and cooling forming, can keep suitable humidity, is beneficial to silkworm feed.After nano-aluminium oxide is taken in body by silkworm, very fast diffusion enters each organ of its health, comprises sericterium.Nano-aluminium oxide is and protein bound, finally in the spinning process of silkworm, enters silk.Due to the sorption enhanced effect of silkworm self, nano-aluminium oxide can with fibroin stable bond, and be uniformly distributed in silk, effectively improve the performance of silk.
The nano-aluminium oxide preparing high tenacity silk as above freshens food and educates a silkworm method, cocoons period from second day five age to being placed on small straw bundles to spin cocoons with a collection of silkworm, and in described mixed feed, the food concentration of adding of nano-aluminium oxide remains unchanged.
The nano-aluminium oxide preparing high tenacity silk adds the high tenacity silk eaten and educate silkworm method and obtain, and the fracture strength of described high tenacity silk monofilament after removing silk gum is 390 ~ 450MPa, and elongation at break is 22 ~ 25%, and energy to failure is 45 ~ 60J/g.
High tenacity silk as above, described in remove silk gum detailed process comprise the following steps:
(1) silk cocoon is cut off the inner silkworm chrysalis of removing;
(2) silk cocoon is placed in the Na that mass percent is 0.5 ~ 1%
2cO
3in the aqueous solution, boil 20 ~ 30min, then use washed with de-ionized water;
(3) repeat (2) step 2 ~ 3 times, the silk come unstuck is hung on Indoor Natural air-dry.
Silk gum is little for the Effect on Mechanical Properties of silk fiber, in actual applications, mostly need to remove silk gum, therefore the present invention adopts the mechanical property of degumed silk to show modified effect, proves the interaction of nano-aluminium oxide and fibroin albumen in the present invention simultaneously and is effectively combined.
A kind of silk product, by high tenacity silk through braiding or be formed by weaving.
Beneficial effect:
Nano-aluminium oxide of the present invention adds food and educates the method for modifying of silkworm method relative to prior art, eliminates expensive equipment support and complicated technological means, not only simple and easy to do, cost-saving, and is easy to control, Be very effective.
High tenacity silk of the present invention, has and has higher toughness and the intensity suitable with natural silk than natural silk.
Detailed description of the invention
Below in conjunction with detailed description of the invention, set forth the present invention further.Should be understood that these embodiments are only not used in for illustration of the present invention to limit the scope of the invention.In addition should be understood that those skilled in the art can make various changes or modifications the present invention, and these equivalent form of values fall within the application's appended claims limited range equally after the content of having read the present invention's instruction.
The silkworm feed used in the present invention, in dry powdered, its main component and configuration proportion scope list in table 1.
The composition with silkworm feed tested by table 1
| Feed forms | Configuration proportion (mass percent %) |
| Dry mulberry leaf | 38～39 |
| Defatted soybean | 36～37 |
| Cornstarch | 8.5～9.5 |
| Green branch, leaf | 4.5～5.5 |
| Agar powder | 4.5～5.5 |
| Compound VB | 1～2 |
| VC | 1～2 |
| Citric acid | 2～3 |
| Choline Chloride | 0～1 |
| Amount to | 100 |
Embodiment 1
The nano-aluminium oxide preparing high tenacity silk freshens food and educates a silkworm method, first prepares mixed feed, specifically comprises:
(1) be that the nano-aluminium oxide of 50 ~ 600nm is soluble in water by size range, make nano-aluminium oxide solution;
(2) nano-aluminium oxide solution is before mixing with silkworm feed, first ultrasonic 15min, make nanoparticle dispersion even, nano-aluminium oxide solution and silkworm feed are stirred, then put into micro-wave oven and heat 3min, the power output of micro-wave oven is 800W, namely makes mixed feed after cooling; Wherein, the quality of water is 2 times of silkworm feed;
Then in silkworm artificial feed and silkworm feed, add nano-aluminium oxide and feed silkworm, absorbing nano-aluminium oxide by silkworm and enter sericterium and final combination by nano-aluminium oxide in spinning process enters silk, namely obtain high tenacity silk;
Be specially: silkworm an age to four age feeding do not add the silkworm feed of nano-aluminium oxide, start feeding five second day ages and with the addition of the mixed feed that mass percent is 1% nano-aluminium oxide, cocoon until be placed on small straw bundles to spin cocoons, cocoon period from second day five age to being placed on small straw bundles to spin cocoons with a collection of silkworm, in described mixed feed, the food concentration of adding of nano-aluminium oxide remains unchanged.
Add food by a kind of nano-aluminium oxide preparing high tenacity silk above and educate the high tenacity silk that silkworm method obtains, carried out removing silk gum by high tenacity silk, the detailed process removing silk gum comprises the following steps:
(1) silk cocoon is cut off the inner silkworm chrysalis of removing;
(2) silk cocoon is placed in the Na that mass percent is 0.5%
2cO
3in the aqueous solution, boil 20min, then use washed with de-ionized water;
(3) repeat (2) step 2 times, the silk come unstuck is hung on Indoor Natural air-dry.After removing silk gum, the fracture strength of monofilament is 390MPa, and elongation at break is 22%, and energy to failure is 45J/g.
In experiment, silkworm feed is composed as follows:
Embodiment 2
The nano-aluminium oxide preparing high tenacity silk freshens food and educates a silkworm method, first prepares mixed feed, specifically comprises:
(1) be that the nano-aluminium oxide of 50 ~ 600nm is soluble in water by size range, make nano-aluminium oxide solution;
(2) nano-aluminium oxide solution is before mixing with silkworm feed, first ultrasonic 30min, make nanoparticle dispersion even, nano-aluminium oxide solution and silkworm feed are stirred, then put into micro-wave oven and heat 6min, the power output of micro-wave oven is 1000W, namely makes mixed feed after cooling; Wherein, the quality of water is 3 times of silkworm feed;
Then in silkworm artificial feed and silkworm feed, add nano-aluminium oxide and feed silkworm, absorbing nano-aluminium oxide by silkworm and enter sericterium and final combination by nano-aluminium oxide in spinning process enters silk, namely obtain high tenacity silk;
Be specially: silkworm an age to four age feeding do not add the silkworm feed of nano-aluminium oxide, start feeding five second day ages and with the addition of the mixed feed that mass percent is 3% nano-aluminium oxide, cocoon until be placed on small straw bundles to spin cocoons, cocoon period from second day five age to being placed on small straw bundles to spin cocoons with a collection of silkworm, in described mixed feed, the food concentration of adding of nano-aluminium oxide remains unchanged.
Add food by a kind of nano-aluminium oxide preparing high tenacity silk above and educate the high tenacity silk that silkworm method obtains, carried out removing silk gum by high tenacity silk, the detailed process removing silk gum comprises the following steps:
(1) silk cocoon is cut off the inner silkworm chrysalis of removing;
(2) silk cocoon is placed in the Na that mass percent is 1%
2cO
3in the aqueous solution, boil 30min, then use washed with de-ionized water;
(3) repeat (2) step 3 times, the silk come unstuck is hung on Indoor Natural air-dry.After removing silk gum, the fracture strength of monofilament is 450MPa, and elongation at break is 25%, and energy to failure is 60J/g.
In experiment, silkworm feed is composed as follows:
Embodiment 3
The nano-aluminium oxide preparing high tenacity silk freshens food and educates a silkworm method, first prepares mixed feed, specifically comprises:
(1) be that the nano-aluminium oxide of 50 ~ 600nm is soluble in water by size range, make nano-aluminium oxide solution;
(2) nano-aluminium oxide solution is before mixing with silkworm feed, first ultrasonic 20min, make nanoparticle dispersion even, nano-aluminium oxide solution and silkworm feed are stirred, then put into micro-wave oven and heat 5min, the power output of micro-wave oven is 900W, namely makes mixed feed after cooling; Wherein, the quality of water is 2.5 times of silkworm feed;
Then in silkworm artificial feed and silkworm feed, add nano-aluminium oxide and feed silkworm, absorbing nano-aluminium oxide by silkworm and enter sericterium and final combination by nano-aluminium oxide in spinning process enters silk, namely obtain high tenacity silk;
Be specially: silkworm an age to four age feeding do not add the silkworm feed of nano-aluminium oxide, start feeding five second day ages and with the addition of the mixed feed that mass percent is 2% nano-aluminium oxide, cocoon until be placed on small straw bundles to spin cocoons, cocoon period from second day five age to being placed on small straw bundles to spin cocoons with a collection of silkworm, in described mixed feed, the food concentration of adding of nano-aluminium oxide remains unchanged.
Add food by a kind of nano-aluminium oxide preparing high tenacity silk above and educate the high tenacity silk that silkworm method obtains, carried out removing silk gum by high tenacity silk, the detailed process removing silk gum comprises the following steps:
(1) silk cocoon is cut off the inner silkworm chrysalis of removing;
(2) silk cocoon is placed in the Na that mass percent is 0.8%
2cO
3in the aqueous solution, boil 25min, then use washed with de-ionized water;
(3) repeat (2) step 2 times, the silk come unstuck is hung on Indoor Natural air-dry.After removing silk gum, the fracture strength of monofilament is 430MPa, and elongation at break is 23%, and energy to failure is 52J/g.
Silk product is formed through braiding by above high tenacity silk.
In experiment, silkworm feed is composed as follows:
Embodiment 4
The nano-aluminium oxide preparing high tenacity silk freshens food and educates a silkworm method, first prepares mixed feed, specifically comprises:
(1) be that the nano-aluminium oxide of 50 ~ 600nm is soluble in water by size range, make nano-aluminium oxide solution;
(2) nano-aluminium oxide solution is before mixing with silkworm feed, first ultrasonic 16min, make nanoparticle dispersion even, nano-aluminium oxide solution and silkworm feed are stirred, then put into micro-wave oven and heat 4min, the power output of micro-wave oven is 950W, namely makes mixed feed after cooling; Wherein, the quality of water is 3 times of silkworm feed;
Then in silkworm artificial feed and silkworm feed, add nano-aluminium oxide and feed silkworm, absorbing nano-aluminium oxide by silkworm and enter sericterium and final combination by nano-aluminium oxide in spinning process enters silk, namely obtain high tenacity silk;
Be specially: silkworm an age to four age feeding do not add the silkworm feed of nano-aluminium oxide, start feeding five second day ages and with the addition of the mixed feed that mass percent is 2% nano-aluminium oxide, cocoon until be placed on small straw bundles to spin cocoons, cocoon period from second day five age to being placed on small straw bundles to spin cocoons with a collection of silkworm, in mixed feed, the food concentration of adding of nano-aluminium oxide remains unchanged.
Add food by a kind of nano-aluminium oxide preparing high tenacity silk above and educate the high tenacity silk that silkworm method obtains, carried out removing silk gum by high tenacity silk, the detailed process removing silk gum comprises the following steps:
(1) silk cocoon is cut off the inner silkworm chrysalis of removing;
(2) silk cocoon is placed in the Na that mass percent is 0.9%
2cO
3in the aqueous solution, boil 22min, then use washed with de-ionized water;
(3) repeat (2) step 3 times, the silk come unstuck is hung on Indoor Natural air-dry.After removing silk gum, the fracture strength of monofilament is 430MPa, and elongation at break is 24%, and energy to failure is 55J/g.
By above high tenacity silk through being formed by weaving silk product.
In experiment, silkworm feed is composed as follows:
Embodiment 5
The nano-aluminium oxide preparing high tenacity silk freshens food and educates a silkworm method, first prepares mixed feed, specifically comprises:
(1) be that the nano-aluminium oxide of 50 ~ 600nm is soluble in water by size range, make nano-aluminium oxide solution;
(2) nano-aluminium oxide solution is before mixing with silkworm feed, first ultrasonic 25min, make nanoparticle dispersion even, nano-aluminium oxide solution and silkworm feed are stirred, then put into micro-wave oven and heat 5min, the power output of micro-wave oven is 1000W, namely makes mixed feed after cooling; Wherein, the quality of water is 3 times of silkworm feed;
Then in silkworm artificial feed and silkworm feed, add nano-aluminium oxide and feed silkworm, absorbing nano-aluminium oxide by silkworm and enter sericterium and final combination by nano-aluminium oxide in spinning process enters silk, namely obtain high tenacity silk;
Be specially: silkworm an age to four age feeding do not add the silkworm feed of nano-aluminium oxide, start feeding five second day ages and with the addition of the mixed feed that mass percent is 3% nano-aluminium oxide, cocoon until be placed on small straw bundles to spin cocoons, cocoon period from second day five age to being placed on small straw bundles to spin cocoons with a collection of silkworm, in described mixed feed, the food concentration of adding of nano-aluminium oxide remains unchanged.
Add food by a kind of nano-aluminium oxide preparing high tenacity silk above and educate the high tenacity silk that silkworm method obtains, carried out removing silk gum by high tenacity silk, the detailed process removing silk gum comprises the following steps:
(1) silk cocoon is cut off the inner silkworm chrysalis of removing;
(2) silk cocoon is placed in the Na that mass percent is 1%
2cO
3in the aqueous solution, boil 30min, then use washed with de-ionized water;
(3) repeat (2) step 2 times, the silk come unstuck is hung on Indoor Natural air-dry.After removing silk gum, the fracture strength of monofilament is 450MPa, and elongation at break is 25%, and energy to failure is 60J/g.
Embodiment 6
The nano-aluminium oxide preparing high tenacity silk freshens food and educates a silkworm method, first prepares mixed feed, specifically comprises:
(1) be that the nano-aluminium oxide of 50 ~ 600nm is soluble in water by size range, make nano-aluminium oxide solution;
(2) nano-aluminium oxide solution is before mixing with silkworm feed, first ultrasonic 28min, make nanoparticle dispersion even, nano-aluminium oxide solution and silkworm feed are stirred, then put into micro-wave oven and heat 4min, the power output of micro-wave oven is 900W, namely makes mixed feed after cooling; Wherein, the quality of water is 2 times of silkworm feed;
Then in silkworm artificial feed and silkworm feed, add nano-aluminium oxide and feed silkworm, absorbing nano-aluminium oxide by silkworm and enter sericterium and final combination by nano-aluminium oxide in spinning process enters silk, namely obtain high tenacity silk;
Be specially: silkworm an age to four age feeding do not add the silkworm feed of nano-aluminium oxide, start feeding five second day ages and with the addition of the mixed feed that mass percent is 2% nano-aluminium oxide, cocoon until be placed on small straw bundles to spin cocoons, cocoon period from second day five age to being placed on small straw bundles to spin cocoons with a collection of silkworm, in described mixed feed, the food concentration of adding of nano-aluminium oxide remains unchanged.
Add food by a kind of nano-aluminium oxide preparing high tenacity silk above and educate the high tenacity silk that silkworm method obtains, carried out removing silk gum by high tenacity silk, the detailed process removing silk gum comprises the following steps:
(1) silk cocoon is cut off the inner silkworm chrysalis of removing;
(2) silk cocoon is placed in the Na that mass percent is 0.7%
2cO
3in the aqueous solution, boil 25min, then use washed with de-ionized water;
(3) repeat (2) step 2 times, the silk come unstuck is hung on Indoor Natural air-dry.After removing silk gum, the fracture strength of monofilament is 435MPa, and elongation at break is 24%, and energy to failure is 56J/g.
Silk product is formed through braiding by above high tenacity silk.
Claims (9)
1. the nano-aluminium oxide preparing high tenacity silk freshens food and educates silkworm method, it is characterized in that: in silkworm artificial feed and silkworm feed, add nano-aluminium oxide and feed silkworm, absorb nano-aluminium oxide by silkworm and enter sericterium and final combination by nano-aluminium oxide in spinning process enters silk, namely obtain high tenacity silk;
Be specially: silkworm an age to four age feeding do not add the silkworm feed of nano-aluminium oxide, start feeding five second day ages and with the addition of the mixed feed that mass percent is 1 ~ 3% nano-aluminium oxide, cocoon until be placed on small straw bundles to spin cocoons.
2. a kind of nano-aluminium oxide preparing high tenacity silk according to claim 1 freshens food and educates silkworm method, it is characterized in that, described mixed feed refers to and in silkworm feed, is evenly mixed into a certain amount of nano-aluminium oxide and the feed heating shortening; The concrete preparation process of described mixed feed comprises the following steps:
(1) nano-aluminium oxide is soluble in water, make nano-aluminium oxide solution;
(2) nano-aluminium oxide solution and silkworm feed are stirred, then heat, after cooling, namely make mixed feed;
Wherein, the quality of water is 2 ~ 3 times of silkworm feed.
3. a kind of nano-aluminium oxide preparing high tenacity silk according to claim 1 freshens food and educates silkworm method, it is characterized in that, described nano-aluminium oxide solution is before mixing with silkworm feed, and first ultrasonic 15 ~ 30min, makes nanoparticle dispersion even.
4. a kind of nano-aluminium oxide preparing high tenacity silk according to claim 1 freshens food and educates silkworm method, it is characterized in that, described heating refers to puts into micro-wave oven heating 3 ~ 6min, and the power output of micro-wave oven is 800 ~ 1000W.
5. a kind of nano-aluminium oxide preparing high tenacity silk according to claim 1 freshens food and educates silkworm method, and it is characterized in that, the size range of described nano-aluminium oxide is 50 ~ 600nm.
6. a kind of nano-aluminium oxide preparing high tenacity silk according to claim 1 freshens food and educates silkworm method, it is characterized in that, cocoon period from second day five age to being placed on small straw bundles to spin cocoons with a collection of silkworm, in described mixed feed, the food concentration of adding of nano-aluminium oxide remains unchanged.
7. a kind of nano-aluminium oxide preparing high tenacity silk adds the high tenacity silk eaten and educate silkworm method and obtain as claimed in claim 1, it is characterized in that: the fracture strength of described high tenacity silk monofilament after removing silk gum is 390 ~ 450MPa, elongation at break is 22 ~ 25%, and energy to failure is 45 ~ 60J/g.
8. high tenacity silk according to claim 7, is characterized in that, described in remove silk gum detailed process comprise the following steps:
(1) silk cocoon is cut off the inner silkworm chrysalis of removing;
(2) silk cocoon is placed in the Na that mass percent is 0.5 ~ 1%
2cO
3in the aqueous solution, boil 20 ~ 30min, then use washed with de-ionized water;
(3) repeat (2) step 2 ~ 3 times, the silk come unstuck is hung on Indoor Natural air-dry.
9. a silk product, is characterized in that: by high tenacity silk through braiding or be formed by weaving.
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| CN201510214713.2A CN104878467A (en) | 2015-04-29 | 2015-04-29 | Nano-aluminum oxide-feeding silkworm rearing method for preparing high-performance silk and product prepared by nano-aluminum oxide-feeding silkworm rearing method |
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| CN201510214713.2A CN104878467A (en) | 2015-04-29 | 2015-04-29 | Nano-aluminum oxide-feeding silkworm rearing method for preparing high-performance silk and product prepared by nano-aluminum oxide-feeding silkworm rearing method |
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| CN201510214713.2A Pending CN104878467A (en) | 2015-04-29 | 2015-04-29 | Nano-aluminum oxide-feeding silkworm rearing method for preparing high-performance silk and product prepared by nano-aluminum oxide-feeding silkworm rearing method |
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| CN106069992A (en) * | 2016-06-07 | 2016-11-09 | 东华大学 | A kind of nano-sized carbon preparing fluorescent natural silk is selected or graphene quantum dot freshens food and educates silkworm method and goods thereof |
| CN108354092A (en) * | 2018-03-09 | 2018-08-03 | 中科国思生物科技研究（广州）有限公司 | A kind of silkworm containing nano material adds food feed and preparation method |
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| CN112853509A (en) * | 2019-11-28 | 2021-05-28 | 南通纺织丝绸产业技术研究院 | Production method of anti-counterfeiting silk with anti-counterfeiting function, application of anti-counterfeiting silk and anti-counterfeiting detection method |
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| CN112853509B (en) * | 2019-11-28 | 2022-04-12 | 南通纺织丝绸产业技术研究院 | Production method of anti-counterfeiting silk with anti-counterfeiting function, application of anti-counterfeiting silk and anti-counterfeiting detection method |
| CN111005085A (en) * | 2019-12-24 | 2020-04-14 | 黄小毅 | Gold-containing silk and preparation method thereof |
| CN114164509A (en) * | 2021-12-16 | 2022-03-11 | 中国科学院电工研究所 | Silk fiber with ultraviolet and near-infrared shielding performance and preparation method and application thereof |
| CN114164509B (en) * | 2021-12-16 | 2024-02-02 | 中国科学院电工研究所 | Silk fiber with ultraviolet and near infrared shielding performance and preparation method and application thereof |
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Application publication date: 20150902 |