CN109122600A - A kind of prepare freshens food from the nano tungsten trioxide of heat production silk and educates silkworm method and its product - Google Patents
A kind of prepare freshens food from the nano tungsten trioxide of heat production silk and educates silkworm method and its product Download PDFInfo
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- CN109122600A CN109122600A CN201810771149.8A CN201810771149A CN109122600A CN 109122600 A CN109122600 A CN 109122600A CN 201810771149 A CN201810771149 A CN 201810771149A CN 109122600 A CN109122600 A CN 109122600A
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- silk
- silkworm
- tungsten trioxide
- nano tungsten
- heat production
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- ZNOKGRXACCSDPY-UHFFFAOYSA-N tungsten trioxide Chemical compound O=[W](=O)=O ZNOKGRXACCSDPY-UHFFFAOYSA-N 0.000 title claims abstract description 104
- 241000255789 Bombyx mori Species 0.000 title claims abstract description 82
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 28
- 235000013305 food Nutrition 0.000 title claims abstract description 25
- CMPGARWFYBADJI-UHFFFAOYSA-L tungstic acid Chemical compound O[W](O)(=O)=O CMPGARWFYBADJI-UHFFFAOYSA-L 0.000 claims abstract description 56
- 239000007864 aqueous solution Substances 0.000 claims abstract description 37
- 230000035611 feeding Effects 0.000 claims abstract description 37
- 238000009987 spinning Methods 0.000 claims abstract description 5
- 239000010902 straw Substances 0.000 claims abstract description 5
- 230000000474 nursing effect Effects 0.000 claims abstract description 3
- 240000000249 Morus alba Species 0.000 claims description 36
- 235000008708 Morus alba Nutrition 0.000 claims description 36
- 239000000243 solution Substances 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 238000009941 weaving Methods 0.000 claims description 9
- 238000007605 air drying Methods 0.000 claims description 7
- 239000008367 deionised water Substances 0.000 claims description 7
- 229910021641 deionized water Inorganic materials 0.000 claims description 7
- 238000002360 preparation method Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 3
- 240000007594 Oryza sativa Species 0.000 claims description 2
- 235000007164 Oryza sativa Nutrition 0.000 claims description 2
- 235000009566 rice Nutrition 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims 1
- 239000000463 material Substances 0.000 claims 1
- 238000012512 characterization method Methods 0.000 abstract description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 11
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 10
- 230000008569 process Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 239000004744 fabric Substances 0.000 description 5
- 238000005286 illumination Methods 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 229910000029 sodium carbonate Inorganic materials 0.000 description 5
- 235000017550 sodium carbonate Nutrition 0.000 description 5
- 238000002604 ultrasonography Methods 0.000 description 5
- 238000011161 development Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000000835 fiber Substances 0.000 description 4
- 230000014759 maintenance of location Effects 0.000 description 4
- 230000035699 permeability Effects 0.000 description 4
- 238000005057 refrigeration Methods 0.000 description 4
- 108010022355 Fibroins Proteins 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 238000011835 investigation Methods 0.000 description 3
- 239000002086 nanomaterial Substances 0.000 description 3
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 229910052721 tungsten Inorganic materials 0.000 description 3
- 239000010937 tungsten Substances 0.000 description 3
- 238000010792 warming Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- QGLKJKCYBOYXKC-UHFFFAOYSA-N nonaoxidotritungsten Chemical compound O=[W]1(=O)O[W](=O)(=O)O[W](=O)(=O)O1 QGLKJKCYBOYXKC-UHFFFAOYSA-N 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000004753 textile Substances 0.000 description 2
- 229910001930 tungsten oxide Inorganic materials 0.000 description 2
- 102000002322 Egg Proteins Human genes 0.000 description 1
- 108010000912 Egg Proteins Proteins 0.000 description 1
- 241000382353 Pupa Species 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002041 carbon nanotube Substances 0.000 description 1
- 229910021393 carbon nanotube Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000029142 excretion Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910021389 graphene Inorganic materials 0.000 description 1
- 238000000338 in vitro Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000004681 ovum Anatomy 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000001243 protein synthesis Methods 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000014616 translation Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K67/00—Rearing or breeding animals, not otherwise provided for; New or modified breeds of animals
- A01K67/033—Rearing or breeding invertebrates; New breeds of invertebrates
- A01K67/04—Silkworms
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23K—FODDER
- A23K20/00—Accessory food factors for animal feeding-stuffs
- A23K20/20—Inorganic substances, e.g. oligoelements
- A23K20/30—Oligoelements
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23K—FODDER
- A23K50/00—Feeding-stuffs specially adapted for particular animals
- A23K50/90—Feeding-stuffs specially adapted for particular animals for insects, e.g. bees or silkworms
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Polymers & Plastics (AREA)
- Animal Husbandry (AREA)
- Zoology (AREA)
- Food Science & Technology (AREA)
- Engineering & Computer Science (AREA)
- Environmental Sciences (AREA)
- Birds (AREA)
- Insects & Arthropods (AREA)
- Animal Behavior & Ethology (AREA)
- Biodiversity & Conservation Biology (AREA)
- Inorganic Chemistry (AREA)
- Feed For Specific Animals (AREA)
- Fodder In General (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
The present invention provides a kind of prepare and freshens food from the nano tungsten trioxide of heat production silk and educate silkworm method and its product, includes the following steps, step 1, silkworm is not added with to three age feedings the silkworm feed of nano tungsten trioxide in an age；Step 2, feeding is added to mass fraction as the mixed feed of the nano tungsten trioxide aqueous solution of 1%-1.5% since four ages, and aqueous solution and quality of the fodder ratio are 1:(20-25), nano tungsten trioxide is absorbed by silkworm and enters sericterium；Step 3, the nursing of mixed feed terminated to five ages, and nano tungsten trioxide is finally combined into silk during the spinning process by the nano tungsten trioxide into sericterium, cocoond until being placed on small straw bundles to spin cocoons, i.e., obtained from heat production silk.Not only to the toughness of silk, intensity makes moderate progress, and more makes its Photothermal characterisation excellent with tungstic acid.Improve the toughness of silk；Silk structure is destroyed, so that crystallinity reduces.
Description
Technical field
The present invention relates to the modifications of silk fiber, and in particular to a kind of prepare from the nano tungsten trioxide of heat production silk adds food
Educate silkworm method and its product.
Background technique
Silk is the concretionary continuous fiber of silk liquid secreted when matured silkworm cocoons, also referred to as natural silk, is a kind of day
Right fiber has excellent warmth retention property, gas permeability, comfort, durability., most thin, most soft natural fibre most light as nature
Dimension, silk not only textile clothes, medical treatment, in terms of extensive application, can also by it is various chemically and physically
Processing method develops various new functional silks, widens the new application of silk.
Common silk fabric, such as silk quilt, cold-proof underwear etc. possess preferable fluffy degree, thermal ressistance, air permeability, and hand
Photosensitive cunning.But the warming of common silk fabric belongs to passive warming, that is, depends on the warming mode of human body own temperature, it can not
Accomplish under light illumination from heat production, so be mostly used in common household life, and in polar regions, space, shallow sea etc. is harsher
In environment, the warmth retention property of common silk will also have a greatly reduced quality.
Currently, existing be confined to mechanical characteristic to the improvement of silk characteristic more, have a large amount of intensity studied to silk,
The performances such as toughness are improved, but carry out excessive research still without to the warmth retention property for improving silk fabric.For example, publication number
A kind of silk and preparation method thereof that aluminum oxide is modified is disclosed for the Chinese patent of CN104878467A.It is invented in patent
Person adds nano-aluminium oxide in silkworm artificial feed, and aluminum oxide is absorbed after silkworm feed and enters sericterium, and then is produced
Out containing the silk of aluminum oxide, the toughness and intensity of silk are improved.Researcher is Publication No. CN102912470A's
On the basis of, by the way that graphene oxide solution is added in regenerated silk fibroin solution, by being dry spun into silk at room temperature, after use second
Alcohol-water mixtures are handled, and the elongation of silk, the performances such as breaking strength are improved.But this spinning mode technique is multiple
Miscellaneous, condition is harsh, low output, is not suitable for being mass produced.Also researcher adds some mineral, pigment in feed of mulberry silkworm
Equal functional particles spin function silk by the conversion absorption of silkworm.These inventions to the toughness of silk, the performances such as intensity into
It has gone improvement, but has been not directed on its warmth retention property.Therefore it can carry out protecting from heat production under more harsh environment to obtain
The warm better silk fabric of property simultaneously widens its application range, needs to be modified silk to be preferably applied to aerospace
(such as suit), nano material, polar region scientific investigation, ocean scientific investigation, hydrospace detection, lifesaving field.
Summary of the invention
Aiming at the problems existing in the prior art, the present invention provides a kind of nano tungsten trioxide prepared from heat production silk and adds
Food educates silkworm method and its product, and production process is simple and easy, and required equipment is cheap, and overall cost is cheap, and the period is shorter, the function of acquisition
Can property silk have Photothermal characterisation, can under faint illumination from heat production without damage the original one's best quality of silk, be convenient for
Large-scale production.
The present invention is to be achieved through the following technical solutions:
A kind of prepare freshens food from the nano tungsten trioxide of heat production silk and educates silkworm method, includes the following steps,
Step 1, silkworm is not added with to three age feedings the silkworm feed of nano tungsten trioxide in an age；
Step 2, the nano tungsten trioxide aqueous solution that feeding is added to that mass fraction is 1%-1.5% since four ages is answered
Feed is closed, aqueous solution and quality of the fodder ratio are 1:(20-25), nano tungsten trioxide is absorbed by silkworm and enters sericterium；
Step 3, the nursing of mixed feed terminated to five ages, into sericterium nano tungsten trioxide finally during the spinning process
Nano tungsten trioxide is combined into silk, is cocoond until being placed on small straw bundles to spin cocoons, i.e., obtained from heat production silk.
Preferably, the mixed feed specific preparation process the following steps are included:
(1) nano tungsten trioxide is soluble in water, it is water-soluble to prepare the nano tungsten trioxide that mass fraction is 1%-1.5%
Liquid；
(2) prepared tungstic acid aqueous solution is uniformly sprayed at silkworm feed surface and obtains mixed feed.
Preferably, in step (1), the nano tungsten trioxide aqueous solution that mass fraction is 1%-1.5% is subjected to ultrasound point
It is dissipated to few 25min, ultrasonic power 250-300W, obtains configured nano tungsten trioxide aqueous solution.
Preferably, the silkworm feed is using various sizes of new fresh and tender mulberry leaf: feeding one age silkworm takes wide 5-6mm, long 1-
The new fresh and tender mulberry leaf filament of 2cm；Feeding two ages silkworm takes wide 6-7mm, the new fresh and tender mulberry leaf filament of long 1-2cm；Feeding three ages silkworm,
Take wide 7-9mm, the new fresh and tender mulberry leaf filament of long 1-2cm；For feeding four to fifth instar larva, taking sprinkling mass fraction is 1%-1.5% tri-
The full wafer of tungsten oxide aqueous solution newly fresh and tender mulberry leaf as mixed feed.
Preferably, further include the steps that removing silk gum as follows:
(1) silk cocoon is cut off into the internal silkworm chrysalis of removal；
(2) silk cocoon is placed in the Na that mass fraction is 1%-1.5%2CO3It is boiled in solution 25-30 minutes, silk gum gradually water
Then solution is cleaned with deionized water repeatedly to completion degumming；
(3) the In Shade natural air drying of silk for completing degumming, obtained from heat production silk.
One kind is obtained from heat production silk by above-mentioned any one method.
One kind is from heat production silk product, by from heat production silk is woven or is formed by weaving.
Compared with prior art, the invention has the following beneficial technical effects:
The nano tungsten trioxide solution of certain mass score is sprayed on feeding silkworm on new fresh mulberry leaf by the present invention, passes through silkworm
Own absorption makes nano tungsten trioxide enter silk, and the wolfram element in nano tungsten trioxide chelates mode and silk by hydrogen bond
Albumen interacts, and not only to the toughness of silk, intensity makes moderate progress, and more makes its photo-thermal excellent with tungstic acid
Characteristic.The present invention is dissolved in nano tungsten trioxide in silk by Feeding way, and wolfram element and fibroin are with the side of covalent bond
Formula connection, improves the toughness of silk；Wolfram element can form hydrogen bond with fibroin albumen again, hinder its conformation from random conformation
Transformation to β-pleated sheet conformation, wolfram element content is higher in silk hinders stronger, and then silk structure is destroyed, so that crystallinity drops
It is low.
It is produced by the invention from heat production silk product under the premise of no change silk original one's best quality, possess light
, can be from heat production, in aerospace in the place for having faint light according to lower from this characteristic of heat production, nano material, polar region scientific investigation,
Hydrospace detection, lifesaving etc. is multi-field to possess potential application value.
Detailed description of the invention
Fig. 1 is the photo-thermal curve graph of nano tungsten trioxide in the present invention.
Fig. 2 is work flow diagram of the invention.
Specific embodiment
Below with reference to specific embodiment, the present invention is described in further detail, it is described be explanation of the invention and
It is not to limit.
In diagram 1, it be 500ug/ml tungstic acid aqueous solution in power is 1W and 2W that two curves, which are concentration respectively,
Photo-thermal curve under 980nm laser irradiation.1 explanation of diagram, under 980nm laser irradiation, the tungstic acid aqueous solution of low concentration
More heat transfer can be generated, and it is higher to improve laser power quantity of heat production in a certain range.On the one hand tungstic acid is embodied
On the other hand excellent Photothermal characterisation shows the self-produced heat function silk excellent performance that the present invention obtains, possess huge latent
In application value.
In diagram 2, production and application process of the present invention from heat production tungstic acid silk are illustrated, it should be appreciated that this hair
Feeding in bright, production, using etc. processes be not only limited to this, after having read the content told about of the present invention, this field
Researcher can make improvements the present invention, and equivalent form falls within the limited range of the application the appended claims.
It in table 1 into table 3, is respectively displayed under the 980nm laser illumination of 2w, does not add food, adds food mass fraction 1% 3
Tungsten oxide feed, add food mass fraction be 1.5% tungstic acid feed obtain silk temperature with time change table.Further
Illustrate compared to common silk, the excellent light thermal property of tungstic acid silk.
The present invention is a kind of to educate silkworm method from heat production nano tungsten trioxide function silk, and the feed is that fresh do not spray is received
The tender mulberry leaf (age to three age feedings) of rice tungstic acid aqueous solution, fresh sprinkling mass fraction are three oxygen of 1%-1.5% nanometer
Change the mulberry leaf (four ages to five age feedings) of tungsten aqueous solution.
Wherein, feed needs to be cut into different size of mulberry leaf silk according to different silkworm ages.Feeding one age silkworm, will new fresh and tender mulberry
Leaf is cut into wide 5-6mm, the filament of long 1-2cm；New fresh and tender mulberry leaf are cut into wide 6-7mm by feeding two ages silkworm, long 1-2cm's
Filament；New fresh and tender mulberry leaf are cut into wide 7-9mm, the filament of long 1-2cm by feeding three ages silkworm；Feeding four takes sprinkling to fifth instar larva
Mass fraction is the full wafer mulberry leaf of 1%-1.5% tungstic acid aqueous solution.
Mass fraction is the nano tungsten trioxide aqueous solution of 1%-1.5%, and after preparing, ultrasonic 30min, power is
300W, it is therefore an objective to nano tungsten trioxide particle be made to be uniformly dispersed.Wherein, tungstic acid size is minimum, water-soluble preferable, after ultrasound
It may be homogenously dispersed in water.By the sorption enhanced of silkworm, the tungstic acid in silk is evenly distributed, and photo-thermal effect is good,
Gas permeability, the primary characteristics such as fluffy degree are simultaneously uninfluenced.
Above-mentioned obtained functional silk, specific step is as follows for the removing silk gum:
(1) silk cocoon is cut off into the internal silkworm chrysalis of removal；
(2) silk cocoon being placed in the Na2CO3 solution that mass fraction is 1% and is boiled 25-30 minutes, silk gum gradually hydrolyzes, after
It is cleaned repeatedly with deionized water；
(3) the In Shade natural air drying of silk for completing degumming；
Although silk gum is little to the Effect on Mechanical Properties of silk, silk gum will affect the gloss of silk, and air permeability is smooth
Degree, feel and brings some difficulties to post-production.Therefore degumming must be carried out before weaving, it is loose to obtain softness, it is clean
Net silk.
One kind is from heat production nano tungsten trioxide silk textile fabric, and thus functional silk is formed by weaving.
Specifically,
Embodiment 1
The present invention is a kind of to educate silkworm method from heat production nano tungsten trioxide function silk,
The silkworm feed in each stage is prepared first,
(1) the nano tungsten trioxide aqueous solution that mass fraction is 1%, rear ultrasound 30min, power 300W, purpose are prepared
It is that nano tungsten trioxide particle is made to be uniformly dispersed；
(2) prepared tungstic acid solution is uniformly sprayed to the mulberry leaf surface cut, refrigeration is collected, to take at any time
With；
Then in the feeding process of silkworm, tungstic acid is absorbed into sericterium by silkworm, and then output contains tungstic acid
From heat production silk；
Specifically: silkworm feeds the new fresh and tender mulberry leaf for not spraying tungstic acid in one to three period in age, since four ages, feeds
The mass ratio of the new fresh mulberry leaf for the tungstic acid aqueous solution that food sprinkling mass fraction is 1%, fountain height and mulberry leaf is 1: 20, until
It cocoons.
Above-mentioned obtained functional silk, specific step is as follows for the removing silk gum:
(1) silk cocoon is cut off into the internal silkworm chrysalis of removal；
(2) silk cocoon is placed in the Na2CO3 solution that mass fraction is 1% and is boiled 25 minutes, silk gum gradually hydrolyzes, rear to use
Deionized water is cleaned repeatedly；
(3) the In Shade natural air drying of silk for completing degumming；
Thus obtained self-produced heat function silk obtains various from heat production silk product by weaving, is applied to each neck
Domain.
As shown in table 1, add the photo-thermal data that the tungstic acid feed that food mass fraction is 1% obtains silk.
| Laser irradiation time (S) | Silk surface temperature (DEG C) |
| 0 | 22.3 |
| 100 | 25.7 |
| 200 | 27.9 |
| 300 | 30.4 |
| 400 | 32.7 |
| 500 | 34.3 |
| 600 | 35.7 |
Embodiment 2
The present invention is a kind of to educate silkworm method from heat production nano tungsten trioxide function silk,
The silkworm feed in each stage is prepared first,
(1) the nano tungsten trioxide aqueous solution that mass fraction is 1.5%, rear ultrasound 25min, power 250W, mesh are prepared
Be that nano tungsten trioxide particle is made to be uniformly dispersed；
(2) prepared tungstic acid solution is uniformly sprayed to the mulberry leaf surface cut, refrigeration is collected, to take at any time
With；
Then in the feeding process of silkworm, tungstic acid is absorbed into sericterium by silkworm, and then output contains tungstic acid
From heat production silk；
Specifically: silkworm feeds the new fresh and tender mulberry leaf for not spraying tungstic acid in one to three period in age, since four ages, feeds
The mass ratio of the new fresh mulberry leaf for the tungstic acid aqueous solution that food sprinkling mass fraction is 1.5%, fountain height and mulberry leaf is 1: 25, directly
To cocooing.
Above-mentioned obtained functional silk, specific step is as follows for the removing silk gum:
(1) silk cocoon is cut off into the internal silkworm chrysalis of removal；
(2) silk cocoon being placed in the Na2CO3 solution that mass fraction is 1.5% and is boiled 30 minutes, silk gum gradually hydrolyzes, after
It is cleaned repeatedly with deionized water；
(3) the In Shade natural air drying of silk for completing degumming；
Thus obtained self-produced heat function silk obtains various from heat production silk product by weaving, is applied to each neck
Domain.
As shown in table 2, the tungstic acid feed for adding food mass fraction 1.5% obtains the photo-thermal data of silk.
| Laser irradiation time (S) | Silk surface temperature (DEG C) |
| 0 | 22.3 |
| 100 | 25.9 |
| 200 | 28.2 |
| 300 | 30.7 |
| 400 | 33.4 |
| 500 | 35.6 |
| 600 | 36.5 |
Embodiment 3
The present invention is a kind of to educate silkworm method from heat production nano tungsten trioxide function silk,
The silkworm feed in each stage is prepared first,
(1) the nano tungsten trioxide aqueous solution that mass fraction is 1.2%, rear ultrasound 40min, power 270W, mesh are prepared
Be that nano tungsten trioxide particle is made to be uniformly dispersed；
(2) prepared tungstic acid solution is uniformly sprayed to the mulberry leaf surface cut, refrigeration is collected, to take at any time
With；
Then in the feeding process of silkworm, tungstic acid is absorbed into sericterium by silkworm, and then output contains tungstic acid
From heat production silk；
Specifically: silkworm feeds the new fresh and tender mulberry leaf for not spraying tungstic acid in one to three period in age, since four ages, feeds
The mass ratio of the new fresh mulberry leaf for the tungstic acid aqueous solution that food sprinkling mass fraction is 1.2%, fountain height and mulberry leaf is 1:23, directly
To cocooing.
Above-mentioned obtained functional silk, specific step is as follows for the removing silk gum:
(1) silk cocoon is cut off into the internal silkworm chrysalis of removal；
(2) silk cocoon being placed in the Na2CO3 solution that mass fraction is 1.3% and is boiled 28 minutes, silk gum gradually hydrolyzes, after
It is cleaned repeatedly with deionized water；
(3) the In Shade natural air drying of silk for completing degumming；
Thus obtained self-produced heat function silk obtains various from heat production silk product by weaving, is applied to each neck
Domain.
Comparative example
It is a kind of obtain original silk educate silkworm method, prepare the silkworm feed in each stage first, specifically:
Cut various sizes of new fresh mulberry leaf (not spilling tungstic acid aqueous solution) according to different silkworm ages, collect refrigeration, so as to
When take；
By ovum, larva was placed on small straw bundles to spin cocoons and cocoons after the stages such as pupa (being divided into for 5 ages) silkworm.
Above-mentioned obtained original silk, specific step is as follows for the removing silk gum:
(1) silk cocoon is cut off into the internal silkworm chrysalis of removal；
(2) silk cocoon being placed in the Na2CO3 solution that mass fraction is 1% and is boiled 25-30 minutes, silk gum gradually hydrolyzes, after
It is cleaned repeatedly with deionized water；
(3) the In Shade natural air drying of silk for completing degumming；
Thus obtained silk obtains various silk products by weaving.
As shown in table 3, the photo-thermal data that food tungstic acid feed obtains silk are not added commonly.
| Laser irradiation time (S) | Silk surface temperature (DEG C) |
| 0 | 22.3 |
| 100 | 23.4 |
| 200 | 24.2 |
| 300 | 24.7 |
| 400 | 25.0 |
| 500 | 25.3 |
| 600 | 25.8 |
Comparison is not adding food, adds the light that food mass fraction is obtained silk by 1% and 1.5% tungstic acid aqueous solution feed
Dsc data illustrates to add food tungstic acid aqueous solution feed silk obtained than not adding and eats tungstic acid aqueous solution silkworm obtained
Silk has greatly improved in terms of photo-thermal effect, and adding food mass fraction is that 1.5% tungstic acid aqueous solution feed is obtained
Silk ratio adds food mass fraction and obtains silk by 1% tungstic acid aqueous solution feed and have more apparent mention in terms of photo-thermal effect
It rises.
A kind of preparation from heat production tungstic acid function silk of the invention is by the new fresh mulberry leaf table in silkworm feeding
The tungstic acid aqueous solution of certain mass score is sprayed in face, by tungstic acid is absorbed into sericterium in silkworm feeding process and in spinning
Tungstic acid is combined into silk in the process, obtains the functional silk with excellent Photothermal characterisation；
From shell is hatched to cocoon generally will be by 27 days (being divided into for five ages) in silkworm, one to three age silkworm is selected and does not add nanometer
The new fresh and tender mulberry leaf feeding of tungstic acid, it is 1%-1.5% nano tungsten trioxide water that feeding, which is sprayed with mass fraction, since four ages
The new fresh mulberry leaf of solution, until five ages terminated, silkworm, which is placed on small straw bundles to spin cocoons, to cocoon.Silkworm is between one to three ages, and sericterium development is not yet mature, and feeding contains
There are the mulberry leaf of tungstic acid to be unfavorable for the growth and development of silkworm, and this stage enter sericterium tungstic acid content it is few.Four
After age, sericterium is reached maturity, and mainly in four to five ages, therefore during this period, feeding contains nano tungsten trioxide to silk protein synthesis
New fresh mulberry leaf can get containing tungstic acid functional silk abundant.By further degumming, weaving, obtaining can be in illumination
Under from the silk product of heat production, apply in every field.
And the wolfram element feeding of high-content is also unfavorable for the growth and development of silkworm, the wolfram element feeding of low content can not be protected again
Demonstrate,prove the content in silk, it is therefore desirable to select the suitable tungstic acid aqueous solution of mass fraction.Mass fraction is selected in experiment discovery
For 0.5% tungstic acid aqueous solution feeding, the tungstic acid content in silk is very little, and reason is a part of tungstic acid
It is excluded by way of excretion after being absorbed by silkworm in vitro, another part is present in silk gum, unrestrained in subsequent scouring processes
Expense is fallen.And selecting mass fraction is 2% tungstic acid aqueous solution feed feeding, affects the growth and development of silkworm.There is portion in silkworm
Divide death, silk yield is caused to reduce.Therefore it is the tungstic acid aqueous solution of 1%-1.5% that the present invention, which selects mass fraction, real
The normal feed for showing not influence silkworm is tested, grows and cocoons.
And tungstic acid is as a kind of metal oxide, and chemical property is stablized, and it is difficult under room temperature to be reacted with soda acid equal solvent, often
It is used to manufacture pure tungsten product, tungsten wire, tungsten electrode, anticorrosive paint etc..Recently, it is excellent to find that tungstic acid has for research
Photo-thermal effect, compared with nano materials such as carbon nanotubes, photo-thermal effect is more outstanding.Therefore the present invention utilizes nano tungsten trioxide pair
Silk is modified, and with obtain can be under light illumination from the function silk of heat production, and then is applied in every field.
Claims (7)
1. a kind of prepare freshens food from the nano tungsten trioxide of heat production silk and educates silkworm method, which is characterized in that include the following steps,
Step 1, silkworm is not added with to three age feedings the silkworm feed of nano tungsten trioxide in an age；
Step 2, feeding is added to mass fraction as the compound feeding of the nano tungsten trioxide aqueous solution of 1%-1.5% since four ages
Material, aqueous solution and quality of the fodder ratio are 1:(20-25), nano tungsten trioxide is absorbed by silkworm and enters sericterium；
Step 3, the nursing of mixed feed terminated to five ages, and the nano tungsten trioxide into sericterium will finally be received during the spinning process
Rice tungstic acid is combined into silk, cocoons until being placed on small straw bundles to spin cocoons, i.e., obtained from heat production silk.
2. a kind of prepare according to claim 1 freshens food from the nano tungsten trioxide of heat production silk and educate silkworm method, feature exists
In, the mixed feed specific preparation process the following steps are included:
(1) nano tungsten trioxide is soluble in water, prepare the nano tungsten trioxide aqueous solution that mass fraction is 1%-1.5%；
(2) prepared tungstic acid aqueous solution is uniformly sprayed at silkworm feed surface and obtains mixed feed.
3. a kind of prepare according to claim 2 freshens food from the nano tungsten trioxide of heat production silk and educate silkworm method, feature exists
In, in step (1), the nano tungsten trioxide aqueous solution that mass fraction is 1%-1.5% is subjected to ultrasonic disperse at least 25min,
Ultrasonic power is 250-300W, obtains configured nano tungsten trioxide aqueous solution.
4. a kind of prepare according to claim 1 or 2 freshens food from the nano tungsten trioxide of heat production silk and educates silkworm method, feature
It is, the silkworm feed is using various sizes of new fresh and tender mulberry leaf: feeding one age silkworm takes wide 5-6mm, and long 1-2cm's is fresh
Tender mulberry leaf filament；Feeding two ages silkworm takes wide 6-7mm, the new fresh and tender mulberry leaf filament of long 1-2cm；Feeding three ages silkworm, takes wide 7-9mm,
The new fresh and tender mulberry leaf filament of long 1-2cm；For feeding four to fifth instar larva, taking sprinkling mass fraction is that 1%-1.5% tungstic acid is water-soluble
The full wafer of liquid newly fresh and tender mulberry leaf as mixed feed.
5. a kind of prepare according to claim 1 freshens food from the nano tungsten trioxide of heat production silk and educate silkworm method, feature exists
In further including the steps that removing silk gum as follows:
(1) silk cocoon is cut off into the internal silkworm chrysalis of removal；
(2) silk cocoon is placed in the Na that mass fraction is 1%-1.5%2CO3It being boiled in solution 25-30 minutes, silk gum gradually hydrolyzes,
Then it is cleaned repeatedly with deionized water to completion degumming；
(3) the In Shade natural air drying of silk for completing degumming, obtained from heat production silk.
6. a kind of from heat production silk, which is characterized in that the method as described in claim 1-5 any one obtains.
7. a kind of from heat production silk product, which is characterized in that by from heat production silk is woven or is formed by weaving.
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