CN106894164A - A kind of method of the standby flexibility auxetic materials of use template electric spinning - Google Patents
A kind of method of the standby flexibility auxetic materials of use template electric spinning Download PDFInfo
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- CN106894164A CN106894164A CN201710127778.2A CN201710127778A CN106894164A CN 106894164 A CN106894164 A CN 106894164A CN 201710127778 A CN201710127778 A CN 201710127778A CN 106894164 A CN106894164 A CN 106894164A
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- China
- Prior art keywords
- auxetic
- auxetic materials
- flexible
- materials
- template
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
- D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
- D04H1/728—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged by electro-spinning
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/0007—Electro-spinning
- D01D5/0061—Electro-spinning characterised by the electro-spinning apparatus
- D01D5/0076—Electro-spinning characterised by the electro-spinning apparatus characterised by the collecting device, e.g. drum, wheel, endless belt, plate or grid
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2501/00—Wearing apparel
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2505/00—Industrial
- D10B2505/04—Filters
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2509/00—Medical; Hygiene
Abstract
The invention discloses a kind of method of the standby flexibility auxetic materials of use template electric spinning, methods described includes：A () prepares the collection template with pattern or concaveconvex structure；B high polymeric solution or high polymer melt liquid are drawn spinning and collected in the collection template prepared at (a) by () using high voltage electric field by electrostatic force；C the flexible auxetic materials that (b) are collected into by () are peeled off from collection template；D () is post-processed flexible auxetic materials, to improve the mechanical property of flexible auxetic materials or assign its function.Method in the present invention can be used for continuously or intermittently preparing for flexible auxetic materials, improve the production efficiency of flexible auxetic materials；The flexible auxetic materials of preparation can be used for the fields such as clothes, filtering material, bio-medical, organizational project, photoelectric material, surge guard, sensor, composite.
Description
Technical field
The present invention relates to a kind of method that utilization Electrospun mode prepares the flexible auxetic materials with auxetic performance, belong to
The textile garment preparing technical field of auxetic structure material.
Background technology
Auxetic materials refer to that the material with Negative poisson's ratio, i.e. material broaden in stretching perpendicular to draw direction,
Material thickening phenomenon during compression.Auxetic materials are referred to as one of 21 century intellectual material, and constantly have with auxetic effect
Foamed material, polymeric material and composite are produced out.It can be it that auxetic structure uses flexible material to make and present
Extensively using basis is provided, various flexible auxetic materials, including auxetic fiber, auxetic yarn are prepared for currently with auxetic structure
Line, auxetic fabric etc..
Research of the recent domestic about flexible auxetic materials is analyzed, the preparation on auxetic fiber is concentrated on from change
High polymer internal microstructure is started with, and such as improves conventional melt spinning technique, and inside has micropore after shaping high polymer long filament, from
And possess auxetic effect, such as authorize Auxetic filamentary materials (United States Patent (USP), hair of Alderson et al.
Bright patent No. U.S.2007/7247265B2)；Preparation on auxetic yarn is then mainly passed through using the positive Poisson's ratio long filament of tradition
Helical structure shapes, and makes it when being acted on by axial tension, and filament component causes structure change because modulus is different, and position is mutual
Change, show as the apparent diameter increase of yarn, such as authorize Uses of auxetic fibres (United States Patent (USP), invention of Hook
Patent No. U.S.2011/8002879B2), authorize a kind of negative poisson ratio yarn structure and its manufacture method (invention of Hu Hong et al.
Patent No. CN201210212844.3)；Preparation on auxetic fabric mainly uses knitted structure, and embedded yarn is added wherein,
Knitted structure is opened space due to the effect of embedded yarn in draw-texture process, form auxetic effect, such as authorize
The Fabrics having knit structures exhibiting auxetic properties of Starbuck et al.
And garments formed thereby (United States Patent (USP), patent of invention U.S.2008/0011021A1), authorizes Anand
Et al. Auxetic knitted fabrics (United States Patent (USP), patent of invention WO2010/125397A1), authorize Ugbolue
Et al. Auxetic fabric structure and related fabrication methods (United States Patent (USP), invention
Patent No. U.S.2014/8772187B2)；In addition with the invention that auxetic mesh is directly made using high polymer, such as authorize
Methods of making an auxetic mesh (United States Patent (USP), patent of invention U.S.2014/ of Alberg et al.
8728369B2)；Hu Hongjiao awards a kind of disclosed negative poisson's ratio woven fabric and manufacture method (patent of invention publication number within 2016
CN106149150A), repeat fabric construction unit by minimum to repeat to constitute, unit is interweaved and constituted jointly by warp thread and weft yarn, most
It is small repeat fabric construction unit shape and structure be interior concave polygon, rotating polygon, star honeycomb, crosslinking polygon or
Person's indent foldable structure, makes woven fabric that negative poisson's ratio or zero effects of Poisson's ratio be presented on one or more directions of its plane；Close
In the application of auxetic textile, can be used to dress, such as authorize the Articles of apparel with of Blakely et al.
Auxetic fabrics (United States Patent (USP), patent of invention U.S.2014/0109286A1), can be used to filter, and such as authorize
The Filtering face-piece respirator having an auxetic mesh in the of Martin et al.
Mask body (United States Patent (USP), patent of invention U.S.2015/8967147B2), can be used for surge guard, such as authorize Rossow
Et al. Blast control blanket (United States Patent (USP), patent of invention U.S.2016/0040962A1), authorize
Seating unit with auxetic support (United States Patent (USP), patent of invention U.S.2015/ of Eberlein et al.
0320220A1)。
Using fiber or yarn in preparation process, material has flexibility to above-mentioned auxetic materials, but main technique is still
Based on traditional knitting and weaving, fabric product deformation is excessive；And though auxetic mesh method is novel, mesh sheet hardness compared with
Greatly, it is flexible not enough；Flexible auxetic materials are made to expand application, it is necessary to the auxetic materials of shaping is possessed certain flexibility and stabilization
Property, i.e., overall orderly, local unordered structure.Chang Jiang, Zhang Daming propose one kind and prepare tubular fiber material using Electrospun
Method (patent of invention CN102084042A), by controlling electrospinning process parameter, using the bar-shaped template of single metal or
The two-dimentional or bar-shaped gang form of 3-dimensional metal with chi structure being made from it, is obtained tubulose electricity spinning fibre material.
The content of the invention
The flexible material with auxetic performance is prepared it is an object of the invention to provide a kind of use template electrical spinning method
Method.
In order to achieve the above object, the technical scheme is that providing a kind of using the standby flexibility auxetic of template electric spinning
The method of material, it is characterised in that comprise the following steps：
A () prepares the collection template with pattern or concaveconvex structure；
B high polymeric solution or high polymer melt liquid are drawn spinning and collected by () using high voltage electric field by electrostatic force
In collection template prepared by step (a)；
C flexible auxetic materials that () will be collected into by step (b) are peeled off from collection template；
D () is post-processed flexible auxetic materials, to improve the mechanical property of flexible auxetic materials or assign its function.
Preferably, the pattern or concaveconvex structure collected in template have auxetic structure, including foldable structure and rotational structure,
Other directions expand the property shunk with other directions under contractive condition under foldable structure and rotational structure have stretching condition；
Pattern or concaveconvex structure by it is knitting, woven, weave, subtract material and process or increase material and process and obtain, subtracting material processing includes
Mechanical quarter, graduating with cutter, photoetching, laser incising, ion quarter, electronics quarter, chemical etching, increasing material processing includes 3D printing；
The form for collecting template is plane, tubulose or curved and combinations thereof.
Preferably, the collection template with pattern or structure is flexible two dimension or three-dimensional auxetic materials structure, is to lead to
Cross deformation mechanism and act on the pattern or structure to form auxetic effect, including indent honeycomb, star network, indent rhombus, positive 12
Face body, triangle grid, central rotation rectangle, central rotation triangle, central rotation tetrahedron, chiral honeycomb, central rotation are more
Face body, it is hinged hexagon, articulated quadrilateral, is hinged triangle and combinations thereof.
Preferably, the formation of the flexible two dimension or three-dimensional auxetic materials structure is by formwork structure, or by high polymer
Itself special nature is configured to the structure with auxetic performance.
Preferably, the high polymer is polarity or nonpolar, auxetic or non-auxetic, and solution or melt liquid electrospinning can be single
Spin, blending or structure are spun, or correctability or enhancing.
Preferably, the mode of the electrostatic force traction spinning is pin type or needle-free, accomplished continuously or intermittently, open or closing
Formula, solution electrospinning or melt liquid electrospinning.
Preferably, perform the step (d) before the step (c), and post processing mode in step (d) include plus
Heat, pressurization, acupuncture, spun lacing, stretching, sizing, chemical adhesion, antimicrobial treatment, flame retardant treatment, anti-shrinking, carbonization treatment and its
Combination.
Another technical scheme of the invention there is provided a kind of above-mentioned standby flexibility auxetic materials of use template electric spinning
Method application, it is characterised in that for the continuously or intermittently production of flexible auxetic materials, improve flexible auxetic materials
Production efficiency.
Another technical scheme of the invention there is provided a kind of by the above-mentioned standby flexibility auxetic of use template electric spinning
The application of the flexible auxetic materials that the method for material is obtained, it is characterised in that for clothes, filtering material, bio-medical, tissue
Engineering, photoelectric material, surge guard, sensor, composite.
The method that the present invention is provided is the auxetic knot that micro-nano-scale Electrospun Nanofibrous Materials: An is prepared by template collection device
Structure, forms it into overall orderly, local unordered state, and in the case where external force effect is born, overall ordered structure is due to auxetic structure
Effect and show auxetic effect, but in the presence of local disordered structure, will not deform again it is excessive, and can be with extensive after deformation
Multiple, i.e., with auxetic effect is stablized, the method in the present invention can be used for the continuously or intermittently production of flexible auxetic materials, improve
The production efficiency of flexible auxetic materials, the flexible auxetic materials of preparation can be used for clothes, filtering material, bio-medical, tissue work
The fields such as journey, photoelectric material, surge guard, sensor, composite.
The present invention is used as collection device by the template with pattern or structure, using solution or melt liquid Electrospun
Mode, material of the production with auxetic structure, and by post-processing its mechanical property of enhancing or assigning its feature；The method can
Continuously or intermittently produce, improve the production efficiency of flexible auxetic materials, the flexible auxetic materials of preparation can be used for clothes, filtering
The fields such as material, bio-medical, organizational project, photoelectric material, surge guard, sensor, composite.
Principle of the invention is that high polymeric solution or high polymer melt liquid are led by electric field force by high voltage electric field
Draw spinning to having in the collection template of pattern or structure, be deposited on the high polymer fibre aggregate collected in template and form auxetic
Structure, and possess auxetic effect；Almost parallel arrangement or deposit a fairly large number of fiber and form auxetic structure, be flexible auxetic
Material offer auxetic performance, and the mechanical property of material foundation is provided, a small amount of Random fiber deposited between auxetic structure rises steady
The effect of fixed structure, and the restitution after deformation is undertaken, the enhancing of mechanical property or functional modified is finally carried out, expand
Its range of application.The auxetic structure of micro-nano-scale Electrospun Nanofibrous Materials: An is prepared especially by template collection device, the structure
It is its overall in order, local unordered state with flexibility, therefore in the case where external force effect is born, overall ordered structure is due to drawing
The effect of swollen structure and show auxetic effect, but in the presence of local disordered structure, will not deform again it is excessive, with soft
Property, and can recover after deformation, i.e., with the flexible auxetic effect of stabilization.
The features of the present invention and beneficial effect are：
1) the template collection device with pattern or structure can influence the deposition of electricity spinning fibre, contribute to fleece to be formed
Auxetic structure.
2) fiber of the flexible auxetic materials prepared by is micro-nano-scale electrospinning fibre, the fiber assembly tool for being formed
Flexible auxetic structure, it is overall in order, local unordered, can recover after bearing deformation, the flexible auxetic effect with stabilization.
3) fiber deposits to form auxetic structure in the way of almost parallel or localized clusters, there is provided auxetic effect, unordered row
Restoring force after the stability of the mixed and disorderly fiber offer structure of row and deformation.
4) flexible auxetic materials can be post-processed, to improve its mechanical property or assign its feature.
5) the flexible material cutting performance with auxetic effect, pressure mottling resistance are good, and with synclastic curvature, can apply to
The fields such as clothes, filtering material, bio-medical, organizational project, photoelectric material, surge guard, sensor, composite, market
Have a extensive future.
Brief description of the drawings
A kind of interior folding flexibility auxetic structure of indent hexagonals of Fig. 1；
A kind of two-dimension flexible auxetic structures of interior rotation of Fig. 2；
A kind of three-dimension flexible auxetic structures of interior rotation of Fig. 3；
A kind of three-dimension flexible auxetic structure of interior foldings of Fig. 4；
A kind of two-dimension flexible auxetic structure of interior foldings of Fig. 5.
Specific embodiment
With reference to specific embodiment, the present invention is expanded on further.It should be understood that these embodiments are merely to illustrate the present invention
Rather than limitation the scope of the present invention.In addition, it is to be understood that after the content for having read instruction of the present invention, people in the art
Member can make various changes or modifications to the present invention, and these equivalent form of values equally fall within the application appended claims and limited
Scope.
Patent Example of the present invention is described using a kind of method of the standby flexibility auxetic materials of template electric spinning of the invention
Method includes：A () prepares the collection template with pattern or concaveconvex structure；B () uses high voltage electric field by high polymeric solution or height
Polymers melt liquid draws spinning and collects in the collection template prepared in step (a) by electrostatic force；C () receives step (b)
The flexible auxetic materials for collecting are peeled off from collection template；D () is post-processed flexible auxetic materials, to improve flexible auxetic
The mechanical property of material assigns its function.
A kind of method of standby flexibility auxetic materials of template electric spinning of the present invention, and in particular to following 5 embodiments：
The conductive filament of embodiment 1 weaves the preparation of indent hexagon cellular structure polyamide 6 tubular flexible auxetic materials：A () adopts
The collection template (as shown in Figure 1) with indent hexagon cellular structure is woven with conductive filament；B () is by the way of liquation Electrospun
By the spinning of high polymer polyamide 6 and collect step (a) prepare collection template on；C the flexible drawing that is collected into for step (b) by ()
Swollen material is peeled off from collection template；D be heat-treated for flexible auxetic materials by (), to improve the mechanical property of flexible auxetic materials
Can, because material is directly formed to tubulose, artificial blood vessel can be, due to explosion during blood vessel blockage with auxetic effect, can be prevented,
There is synclastic curvature due to it again, blood flow will not be blocked when flexural deformation is born.
The preparation of the 3D printing chiral structure polyacrylonitrile of embodiment 2 flexibility auxetic materials：A () uses the increasing material of 3D printing
Processing mode prepares the collection template (as shown in Figure 2) with chiral structure；B () is by the way of solution Electrospun by high polymer
Polyacrylonitrile spinning is simultaneously collected in the collection template prepared in step (a)；C the flexible auxetic materials that are collected into for step (b) by ()
Peeled off in template from being collected；D flexible auxetic materials are carried out carbonization treatment by (), the carbon fiber with auxetic effect can be obtained, should
For composite, aerospace field, the synclastic curvature of composite can be improved, and improve its impact resistance, anti-folding line
Property.
The electron beam lithography hub-and-spoke configuration low molecular weight polyethylene of embodiment 3, polyurethane, High molecular weight polyethylene blending are flexible
The preparation of auxetic materials, post processing can bond low molecular weight polyethylene using heating, and structure is more stablized, and polyurethane is provided more
Big elasticity：A () prepares the collection template with hub-and-spoke configuration using electron beam lithography；B () is using solution electricity blended ratio
Mode by high polymer low molecular weight polyethylene, polyurethane, High molecular weight polyethylene spinning and collect step (a) prepare receipts
In collection template；C the flexible auxetic materials that are collected into for step (b) by () are peeled off from collection template；D () enters flexible auxetic materials
Row hot-pressing processing, low molecular weight polyethylene melt bonded polyurethane and High molecular weight polyethylene under heat, to improve flexible drawing
The mechanical property and structural stability of swollen material.
Embodiment 4 is machined the preparation of three-dimensional indent honeycomb template PLA flexibility auxetic materials：A () machinery adds
Work method prepares the 3D with three-dimensional indent honeycomb and collects template (as shown in Figure 3 and Figure 4)；B () uses solution Electrospun
Mode by the spinning of high polymer PLA and collect step (a) prepare collection template on；C be collected into for step (b) by ()
Flexible auxetic materials are peeled off from collection template；D () is post-processed flexible auxetic materials, to improve flexible auxetic materials
Mechanical property assigns its function, and because PLA has good biocompatibility, flexible auxetic PLA can be applied to group
The biomedical sectors such as weaver's journey, promote cell proliferation and differentiation.
The preparation of the self-built 3D Bird's Nests structural flexibility auxetic materials of flat board aluminium foil chlorinated polypropylene ionic liquid of embodiment 5：(a)
Using flat board aluminium foil as collection template (as shown in Figure 5)；B () is by the way of solution Electrospun by the high polymer with ion
Chlorinated polypropylene spinning is simultaneously collected in the collection template prepared in step (a), and the special property of its high polymer can be formed material
Nest like structure；C the flexible auxetic materials that are collected into for step (b) by () are peeled off from collection template；D () is by flexible auxetic materials
Post-processed, to improve the mechanical property and structural stability of flexible auxetic materials, because Bird's Nest structure has good energy
Energy absorption capability, can be used as surge guard material or composite.
Claims (9)
1. a kind of method that use template electric spins standby flexibility auxetic materials, it is characterised in that comprise the following steps：
A () prepares the collection template with pattern or concaveconvex structure；
B high polymeric solution or high polymer melt liquid are drawn spinning and collected in step by () using high voltage electric field by electrostatic force
In collection template prepared by (a)；
C flexible auxetic materials that () will be collected into by step (b) are peeled off from collection template；
D () is post-processed flexible auxetic materials, to improve the mechanical property of flexible auxetic materials or assign its function.
2. the method that a kind of use template electric as claimed in claim 1 spins standby flexibility auxetic materials, it is characterised in that collect
Pattern or concaveconvex structure in template have auxetic structure, including foldable structure and rotational structure, foldable structure and rotational structure
With the property that other directions under other directions expansion under stretching condition and contractive condition are shunk；
Pattern or concaveconvex structure by it is knitting, woven, weave, subtract material and process or increase material and process and obtain, subtracting material processing includes machinery
Quarter, graduating with cutter, photoetching, laser incising, ion quarter, electronics quarter, chemical etching, increasing material processing includes 3D printing；
The form for collecting template is plane, tubulose or curved and combinations thereof.
3. the method that a kind of use template electric as claimed in claim 1 spins standby flexibility auxetic materials, it is characterised in that have
The collection template of pattern or structure is flexible two dimension or three-dimensional auxetic materials structure, is to act on forming drawing by deformation mechanism
The pattern or structure of swollen effect, including indent honeycomb, star network, indent rhombus, regular dodecahedron, triangle grid, center rotation
Torque shape, central rotation triangle, central rotation tetrahedron, chiral honeycomb, central rotation polyhedron, it is hinged hexagon, is hinged
Quadrangle, it is hinged triangle and combinations thereof.
4. the method that a kind of use template electric as claimed in claim 3 spins standby flexibility auxetic materials, it is characterised in that described
The formation of flexible two dimension or three-dimensional auxetic materials structure is configured to tool by formwork structure, or by high polymer itself special nature
There is the structure of auxetic performance.
5. the method that a kind of use template electric as claimed in claim 3 spins standby flexibility auxetic materials, it is characterised in that described
High polymer is polarity or nonpolar, auxetic or non-auxetic, and solution or melt liquid electrospinning can singly be spun, blending or structure are spun, or can
Modified or enhancing.
6. the method that a kind of use template electric as claimed in claim 1 spins standby flexibility auxetic materials, it is characterised in that described
The mode of electrostatic force traction spinning is pin type or needle-free, accomplished continuously or intermittently, open or closed, solution electrospinning or fused solution
Body electrospinning.
7. the method that a kind of use template electric as claimed in claim 1 spins standby flexibility auxetic materials, it is characterised in that in institute
State and perform before step (c) step (d), and post processing mode in step (d) include heating, pressurization, acupuncture, spun lacing,
Stretching, sizing, chemical adhesion, antimicrobial treatment, flame retardant treatment, anti-shrinking, carbonization treatment and combinations thereof.
8. a kind of application of the method for the standby flexibility auxetic materials of use template electric spinning as claimed in claim 1, its feature exists
In, for the continuously or intermittently production of flexible auxetic materials, the production efficiency of the flexible auxetic materials of raising.
9. a kind of flexible drawing obtained by the method for using template electric to spin standby flexibility auxetic materials as claimed in claim 1
The application of swollen material, it is characterised in that anti-for clothes, filtering material, bio-medical, organizational project, photoelectric material, impact
Shield, sensor, composite.
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| CN201710127778.2A CN106894164B (en) | 2017-03-06 | 2017-03-06 | A method of standby flexible auxetic materials are spinned using template electric |
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| CN201710127778.2A CN106894164B (en) | 2017-03-06 | 2017-03-06 | A method of standby flexible auxetic materials are spinned using template electric |
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| CN107475789A (en) * | 2017-10-16 | 2017-12-15 | 东华大学 | A kind of film splits the method that method rapid batch prepares auxetic fiber |
| CN107672192A (en) * | 2017-10-16 | 2018-02-09 | 东华大学 | A kind of former and method of the negative Poisson fabric of two dimension |
| CN108386467A (en) * | 2018-05-10 | 2018-08-10 | 中国人民解放军海军工程大学 | Multi-panel indent pyramid negative poisson's ratio space lattice structure and its pressure-bearing grillage |
| CN108642640A (en) * | 2018-05-03 | 2018-10-12 | 东华大学 | A kind of preparation method and purposes of rigidity gradient auxetic materials |
| CN108749062A (en) * | 2018-05-03 | 2018-11-06 | 东华大学 | Processing method, device and purposes based on auxetic fiber prepared by template |
| CN111950095A (en) * | 2020-07-09 | 2020-11-17 | 中山大学 | Three-dimensional multi-cell structure with adjustable Poisson's ratio and thermal expansion coefficient |
| CN112537438A (en) * | 2020-12-17 | 2021-03-23 | 中国航空工业集团公司成都飞机设计研究所 | Flexible skin based on unit structure |
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| CN107475789A (en) * | 2017-10-16 | 2017-12-15 | 东华大学 | A kind of film splits the method that method rapid batch prepares auxetic fiber |
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| CN108749062A (en) * | 2018-05-03 | 2018-11-06 | 东华大学 | Processing method, device and purposes based on auxetic fiber prepared by template |
| CN108749062B (en) * | 2018-05-03 | 2020-07-31 | 东华大学 | Processing method, device and application of auxetic fiber prepared based on template |
| CN108386467A (en) * | 2018-05-10 | 2018-08-10 | 中国人民解放军海军工程大学 | Multi-panel indent pyramid negative poisson's ratio space lattice structure and its pressure-bearing grillage |
| CN111950095A (en) * | 2020-07-09 | 2020-11-17 | 中山大学 | Three-dimensional multi-cell structure with adjustable Poisson's ratio and thermal expansion coefficient |
| WO2022006920A1 (en) * | 2020-07-09 | 2022-01-13 | 中山大学 | Three-dimensional multi-cell structure with adjustable poisson's ratio and coefficient of thermal expansion |
| CN111950095B (en) * | 2020-07-09 | 2024-02-23 | 中山大学 | Three-dimensional multicellular structure with adjustable poisson ratio and thermal expansion coefficient |
| CN112537438A (en) * | 2020-12-17 | 2021-03-23 | 中国航空工业集团公司成都飞机设计研究所 | Flexible skin based on unit structure |
| CN112537438B (en) * | 2020-12-17 | 2022-07-12 | 中国航空工业集团公司成都飞机设计研究所 | Flexible skin based on unit structure |
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