CN109942746A - A kind of temperature sensitive light guide valve and preparation method thereof - Google Patents
A kind of temperature sensitive light guide valve and preparation method thereof Download PDFInfo
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- CN109942746A CN109942746A CN201910237164.9A CN201910237164A CN109942746A CN 109942746 A CN109942746 A CN 109942746A CN 201910237164 A CN201910237164 A CN 201910237164A CN 109942746 A CN109942746 A CN 109942746A
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- core component
- light guide
- temperature sensitive
- sensitive light
- guide valve
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- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 239000008358 core component Substances 0.000 claims abstract description 46
- 239000000017 hydrogel Substances 0.000 claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000011148 porous material Substances 0.000 claims abstract description 7
- 238000005452 bending Methods 0.000 claims abstract description 5
- 238000003860 storage Methods 0.000 claims abstract description 5
- 239000000243 solution Substances 0.000 description 14
- 239000003599 detergent Substances 0.000 description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 230000007704 transition Effects 0.000 description 8
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 7
- 229910001220 stainless steel Inorganic materials 0.000 description 6
- 239000010935 stainless steel Substances 0.000 description 6
- 239000012528 membrane Substances 0.000 description 5
- 239000008367 deionised water Substances 0.000 description 4
- 229910021641 deionized water Inorganic materials 0.000 description 4
- 239000006260 foam Substances 0.000 description 4
- 239000000178 monomer Substances 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- KWYHDKDOAIKMQN-UHFFFAOYSA-N N,N,N',N'-tetramethylethylenediamine Chemical compound CN(C)CCN(C)C KWYHDKDOAIKMQN-UHFFFAOYSA-N 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 238000004108 freeze drying Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 230000002209 hydrophobic effect Effects 0.000 description 2
- 239000005457 ice water Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- ZIUHHBKFKCYYJD-UHFFFAOYSA-N n,n'-methylenebisacrylamide Chemical compound C=CC(=O)NCNC(=O)C=C ZIUHHBKFKCYYJD-UHFFFAOYSA-N 0.000 description 2
- QNILTEGFHQSKFF-UHFFFAOYSA-N n-propan-2-ylprop-2-enamide Chemical compound CC(C)NC(=O)C=C QNILTEGFHQSKFF-UHFFFAOYSA-N 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 description 2
- 235000019394 potassium persulphate Nutrition 0.000 description 2
- 238000009738 saturating Methods 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- 241000282326 Felis catus Species 0.000 description 1
- 206010021703 Indifference Diseases 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 210000004872 soft tissue Anatomy 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
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- Colloid Chemistry (AREA)
- Micromachines (AREA)
Abstract
The present invention provides a kind of temperature sensitive light guide valves and preparation method thereof, including core component (3), core component (3) is the hydrogel with graded pore structure, and preparation method, steps are as follows: 1) core component (3) being cut into strip；2) core component (3) one end is fixed with fixture (2), and be completely immersed in the transparent utensil (1) of water storage, core component (3) bottom end is kept at a distance with transparent utensil (1) bottom；3) laser (4) is affixed on transparent utensil (1) outer wall, when water temperature is lower than LCST in transparent utensil (1), core component (3) keeps plumbness, when water temperature is higher than LCST in transparent utensil (1), core component (3) will generate bending, so far temperature sensitive light guide valve is made, a kind of temperature sensitive light guide valve provided by the invention and preparation method thereof, preparation method is simple, it is low in cost, and temperature sensitive light guide valve is able to achieve automatic switch.
Description
Technical field
The present invention relates to temperature sensitive light guide valve technology field more particularly to a kind of preparation methods of temperature sensitive light guide valve.
Background technique
Hydrogel has a variety of stimuli responsive properties, has similar water content with biologic soft tissue.Therefore, hydrogel exists
Biomedical and soft robot field has extensive potential using value.Hydrogel can generate reversible shape under environmental stimuli
Become, such as dehydration shrinkage and water swelling, but these deformation are often that indifference is uncontrollable.Therefore it needs to carry out hydrogel
Structure design, makes it have anisotropic structure, so that deformation is controllable.
The design and control of hydrogel actuator heterojunction structure are most important for the actuating behavior for manipulating them.Traditional plan
Slightly it is the gradually polymerization of passive polymer hydrogel and active polyalcohol hydrogel, forms double-layer structure.In general, this double-deck knot
Structure shows slowly to be bent/stretch deformation, and after a large amount of repeated actuations, especially in extensive the case where being bent
Under, it is intended to it is layered along weak interface.And conventional hydrogel actuating is usually related to absorbing and releasing for water, and this response
Be slowly, scale it is small, show slowly macroscopic view response, size be a few minutes to a few houres.
The existing temperature sensitive light guide valve manufacture based on hydrogel is with high costs, and can not achieve automatic switch, therefore city
One kind is needed on, and preparation method is simple, low in cost, and is able to achieve the temperature sensitive light guide valve of automatic switch.
Summary of the invention
In view of the above-mentioned state of the art, technical problem to be solved by the present invention lies in provide a kind of temperature sensitive light guide valve
Door and preparation method thereof, preparation method is simple for this, low in cost, and temperature sensitive light guide valve is able to achieve automatic switch.
The technical scheme of the invention to solve the technical problem is:
A kind of temperature sensitive light guide valve, including core component, core component are the hydrogel with graded pore structure.
Further, a height of 50mm × 10mm of the length and width of core component × 2mm.
Further, the preparation method of temperature sensitive light guide valve, steps are as follows:
1) core component is cut into strip；
2) core component one end is fixed with fixture, and is completely immersed in the transparent utensil of water storage, core component bottom
It keeps at a distance with transparent utensil bottom at end；
3) laser is affixed on transparent utensil outer wall, when water temperature is lower than LCST in transparent utensil, core component keeps hanging down
Straight state, when water temperature is higher than LCST in transparent utensil, core component will generate bending, and temperature sensitive light guide valve is so far made.
Further, core component and transparent utensil keeping parallelism, core component bottom end and transparent utensil bottom keep it
1/5 distance of itself overall length.
Further, LCST=33 DEG C.
The utility model has the advantages that
The temperature sensitive light guide valve that the method is prepared through the invention, due to the gradient knot based on good hydrogel
Structure, therefore, when water temperature is lower than the phase transition temperature of hydrogel, laser beam is blocked by hydrogel, and water temperature reaches phase transition temperature
When, the aquagel membrane with anisotropic structure can shrink generation orientation deformation, and the light guide valve is caused to be bent, and keep laser logical
It crosses, it is achieved that the automatic off/on state of temperature sensitive light guide valve；And it is such preparation method is simple, it is low in cost.
Detailed description of the invention
Fig. 1 is detergent blistering under natural conditions；
Fig. 2 is hydrogel ice-melt and removes the film obtained after residual detergent；
Fig. 3 is that the longitudinal section SEM of hydrogel schemes；
Fig. 4 is core component 2mm thickness direction structural schematic diagram；
Fig. 5 is the closed state of temperature sensitive light guide valve；
Fig. 6 is the open state of temperature sensitive light guide valve.
Wherein, transparent utensil 1, fixture 2, core component 3, laser 4.
Specific embodiment
, there are further understanding and understanding in the effect of to make to structure feature of the invention and being reached, to preferable
Examples and drawings cooperation detailed description, is described as follows:
Embodiment 1
1) take the solution of 10ml commercial detergent and deionized water quality ratio 1:10 in the stainless steel cup of diameter about 10cm,
2.03g N-isopropylacrylamide monomer and 0.002g N, N '-methylene-bisacrylamide are weighed in detergent solution, is stirred
30min dissolves it sufficiently；
2) it is passed through high pure nitrogen into solution and is bubbled 3min, removes the oxygen contained in solution；
3) the good concentration of configured in advance is added thereto is 7.75mg/ml tetramethylethylenediamine aqueous solution 1.19ml and concentration
For the potassium peroxydisulfate 1.49ml of 10mg/ml, 1min is stirred in ice-water bath, it is made to be uniformly dispersed.
4) it is vigorously stirred the solution in stainless steel cup with hand-held mixer, is allowed to the height that 2-5cm or so is arrived in foaming, by
The surface tension of water can be made to substantially reduce in the presence of surfactant, this just ensure that the stabilization of foam to a certain extent
Property, thus these foams will not rupture easily, and the biggish bubble density of volume is less than bubble small in size, so bubble in cup
From bottom to top increasing gradient distribution as shown in Figure 1 can be presented；
5) stainless steel cup is transferred to 3-5min in the copper post of -90 DEG C of freezing baths, making bubble, orientation is frozen from bottom to top rapidly
Knot sizing, is then transferred into low temperature refrigerator and stands 7 days or more；
6) crosslinked hydrogel is taken out from refrigerator, is washed with deionized water after slowly melting except uncrosslinked hydrogel
Monomer and detergent originally freezed blocking porous aquagel and collapsed, and obtained aquagel membrane as shown in Figure 2, film thickness is about
1.5mm, longitudal section structure such as Fig. 3 amplifies shown in 100 times of scanning electron microscope after film freeze-drying, has orientation gradient well
Pore structure.
7) obtained aquagel membrane is cut into a height of 50mm × 10mm of length and width × 2mm strip to get temperature sensitive light guide is arrived
The core component 3 of valve.
8) 3 one end of core component is fixed with fixture 2, and it is dipped vertically into completely in the transparent utensil 1 of water storage, it is transparent
Vessel 1 can be square glass vessel, the outer wall keeping parallelism of core component 3 and transparent utensil 1,3 bottom end of core component with it is saturating
1/5 distance of 1 bottom of funerary objects ware holding, 3 overall length of core component.
9) laser 4 is affixed on 1 outer wall of transparent utensil, and laser beam is radiated at 2/5 position of lower section of core component 3.
The low critical transition temperature (LCST) of hydrogel is 33 DEG C, when water temperature is lower than low critical transition temperature (LCST) in transparent utensil 1
When, since hydrogel is always held at hydrophilic state, volume will not be shunk, therefore core component 3 keeps plumbness, blocks sharp
Light, i.e., temperature sensitive light guide valve are in close state；When water temperature is greater than or equal to low critical transition temperature (LCST) in transparent utensil 1
When, hydrogel can start to be changed into hydrophobic state from hydrophilic state, and thus the water in hydrogel hole largely flows out, its volume is caused to be received
Contracting, as shown in figure 4, thickness direction pore structure of the core component 3 in 2mm has very big gradient drop, so two sides is in volume
The degree of contraction has otherness, to make core component 3 that will generate bending, passes from below through laser, i.e., temperature sensitive light guide valve
Door is in the open state.
Typically, commercial detergent can use commercially available " white cat " detergent.
Embodiment 2
1) take the solution of 10ml commercial detergent and deionized water quality ratio 1:10 in the stainless steel cup of diameter about 10cm,
2.03g N-isopropylacrylamide monomer and 0.002g N, N '-methylene-bisacrylamide are weighed in detergent solution, is stirred
30min dissolves it sufficiently；
2) it is passed through high pure nitrogen into solution and is bubbled 3min, removes the oxygen contained in solution；
3) tetramethylethylenediamine aqueous solution 1.19ml that the good concentration of configured in advance is 7.75mg/ml and dense is added thereto
Degree is the potassium peroxydisulfate 1.49ml of 10mg/ml, and 1min is stirred in ice-water bath, it is made to be uniformly dispersed.
4) it is vigorously stirred the solution in stainless steel cup with hand-held mixer, is allowed to the height that 2-5cm or so is arrived in foaming, by
The surface tension of water can be made to substantially reduce in the presence of surfactant, this just ensure that the stabilization of foam to a certain extent
Property, thus these foams will not rupture easily, and the biggish bubble density of volume is less than bubble small in size, so bubble in cup
Up big and down small gradient conditions as shown in Figure 1 can be presented；
5) stainless steel cup is transferred to 3-5min in the copper post of liquid nitrogen frozen bath, liquid nitrogen frozen bath temperature is -196 DEG C, is made
Bubble rapidly freeze to be formed from bottom to top by orientation, is then transferred into low temperature refrigerator and stands 7 days or more；
6) crosslinked hydrogel is taken out from refrigerator, is washed with deionized water after slowly melting except uncrosslinked hydrogel
Monomer and detergent originally freezed blocking porous aquagel and collapsed, and obtained aquagel membrane, longitudal section knot after film freeze-drying
Structure amplifies shown in 100 times of scanning electron microscope such as Fig. 4, also has good graded pore structure, the film thickness obtained after ice-melt is about
1.5mm。
7) obtained aquagel membrane is cut into a height of 50mm × 10mm of length and width × 2mm strip to get temperature sensitive light guide is arrived
The core component 3 of valve.
8) 3 one end of core component is fixed with fixture 2, and it is dipped vertically into completely in the transparent utensil 1 of water storage, it is transparent
Vessel 1 can be square glass vessel, the outer wall keeping parallelism of core component 3 and transparent utensil 1,3 bottom end of core component with it is saturating
1 bottom of funerary objects ware keeps 1/5 distance of its overall length.
9) laser 4 is affixed on 1 outer wall of transparent utensil, and laser beam is radiated at 2/5 position of lower section of core component 3.
The low critical transition temperature (LCST) of hydrogel is 33 DEG C, when water temperature is lower than low critical transition temperature (LCST) in transparent utensil 1
When, since hydrogel is always held at hydrophilic state, volume will not be shunk, therefore core component 3 keeps plumbness, blocks sharp
Light, i.e., temperature sensitive light guide valve are in close state；When water temperature is greater than or equal to low critical transition temperature (LCST) in transparent utensil 1
When, hydrogel can start to be changed into hydrophobic state from hydrophilic state, and thus the water in hydrogel hole largely flows out, its volume is caused to be received
Contracting, as shown in figure 4, thickness direction pore structure of the core component 3 in 2mm has very big gradient drop, so two sides is in volume
The degree of contraction has otherness, to make core component 3 that will generate bending, passes from below through laser, i.e., temperature sensitive light guide valve
Door is in the open state.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, it will be understood by those of skill in the art that it still can be right
Technical solution documented by previous embodiment is modified, or is replaced on an equal basis to part of technical characteristic；And these
It modifies or replaces, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (5)
1. a kind of temperature sensitive light guide valve, which is characterized in that including core component (3), the core component (3) is with gradient pore
The hydrogel of structure.
2. a kind of temperature sensitive light guide valve according to claim 1, it is characterised in that: the length, width and height of the core component (3)
For 50mm × 10mm × 2mm.
3. a kind of preparation method of temperature sensitive light guide valve as claimed in claim 1 or 2, which is characterized in that steps are as follows:
1) core component (3) is cut into strip；
2) core component (3) one end is fixed with fixture (2), and be completely immersed in the transparent utensil (1) of water storage, institute
Core component (3) bottom end is stated to keep at a distance with the transparent utensil (1) bottom；
3) laser (4) is affixed on the transparent utensil (1) outer wall, when water temperature is lower than LCST in the transparent utensil (1), institute
It states core component (3) and keeps plumbness, when water temperature is higher than LCST in the transparent utensil (1), the core component (3) will
Bending is generated, temperature sensitive light guide valve is so far made.
4. a kind of preparation method of temperature sensitive light guide valve according to claim 3, it is characterised in that: the core component
(3) it is kept certainly with the transparent utensil (1) keeping parallelism, core component (3) bottom end and the transparent utensil (1) bottom
1/5 distance of body overall length.
5. the preparation method of temperature sensitive light guide valve according to claim 4, it is characterised in that: described LCST=33 DEG C.
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| CN201910237164.9A CN109942746B (en) | 2019-03-27 | 2019-03-27 | Temperature-sensitive photoconductive valve and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910237164.9A CN109942746B (en) | 2019-03-27 | 2019-03-27 | Temperature-sensitive photoconductive valve and preparation method thereof |
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| Publication Number | Publication Date |
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| CN109942746A true CN109942746A (en) | 2019-06-28 |
| CN109942746B CN109942746B (en) | 2021-03-16 |
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Effective date of registration: 20240403 Address after: No. 7 Xinzhen Road, Xinbi Street, Jinyun County, Lishui City, Zhejiang Province, 323000 Patentee after: Dingda Valve Co.,Ltd. Country or region after: China Address before: Baiyang street, Hangzhou Economic Development Zone, Jianggan District, Hangzhou City, Zhejiang Province 310000 Patentee before: ZHEJIANG SCI-TECH University Country or region before: China |
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