CN104789139A - Reversible adhesive device based on dielectric elastomer - Google Patents
Reversible adhesive device based on dielectric elastomer Download PDFInfo
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- CN104789139A CN104789139A CN201510178103.1A CN201510178103A CN104789139A CN 104789139 A CN104789139 A CN 104789139A CN 201510178103 A CN201510178103 A CN 201510178103A CN 104789139 A CN104789139 A CN 104789139A
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- dielectric elastomer
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- gluing device
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Abstract
The invention discloses a reversible adhesive device based on a dielectric elastomer. The reversible adhesive device comprises an adhesion layer, a driving layer and a rigid body positioned between the adhesion layer and the driving layer, wherein the driving layer adopts a dielectric elastomer film with upper and lower surfaces coated with flexible electrode layers. Compared with the prior art, the reversible adhesive device has the following advantages: the material matching scheme is flexible, the structure is simple, and the parameters of the reversible glue sticky device can be adjusted at random to meet the requirements of different working conditions; control is performed through power supply and power failure, the operation is simple and easy to control, long-time operation is facilitated, and recycling is realized; the reversible adhesive device can be manufactured into a half-flexible reversible adhesive device to perfectly fit a complicated curve so as to complete reversible adhesive operation on the complicated curve.
Description
Technical field
The present invention relates to reversible adhesion technical field, be specifically related to a kind of reversible gluing device based on dielectric elastomer.
Background technology
Sizing agent, as requisite material in the daily productive life of a kind of mankind, is widely used in each technical fields such as construction and decoration, article packing, machinofacture, minute manufacturing.
International Standards Organization (ISO) has done following definition to " adhesion ": adhere to and refer to that the surface of two solid matters relies on the strength of chemistry or physics to form integrated state; Adhesive agent (sizing agent) (adhesive) refers between bi-material, makes it into the material of integrated state by the method for bonding; Adherend (adherend) is called by the solid matter adhered to; With adhesive agent, two adjacent adherend surface bonding parts are together called joint (joint).
Stick relative to mechanical joint, bond site stress dispersion evenly, thus suppress the junction of causing because of fatigue of materials to be damaged greatly, improve structural strength and the bulk strength of product greatly.The unique advantages such as meanwhile, sizing agent has low price, and low cost of manufacture is easily produced, and easily processes, convenient transportation, easy to use.
Along with the development of chemosynthesis, sizing agent has had the kind that kind more than 10000 can adapt to different application place, and in Chemicals, occupies critical role with the output of annual 10000000 tons more than.
Traditional sizing agent is only responsible between bi-material, form powerful permanent adhesive effect, and because of the difference of environment for use, its thermotolerance, erosion resistance, wet fastness, stability etc. are all the factors needing to investigate.In recent years, along with developing rapidly of manufacturing technology, people are a kind of new technology that not only can adhere to but also can remove under specific circumstances adhesion of valuing researches more and more, that is: reversiblely stick technology.
The problems such as existing reversible adhesion technology mainly regulates with external sources such as speed, temperature, pressure, there is operational difficulty, is difficult to control, and cycle index is few, have certain limitation and specific aim, govern reversible large-scale application of sticking technology.
Summary of the invention
For the deficiencies in the prior art, the present invention proposes a kind of reversible gluing device based on dielectric elastomer.
Based on a reversible gluing device for dielectric elastomer, comprise adhesion layer, driving layer, and the rigid body between adhesion layer and driving layer, described driving layer is dielectric elastomerics film.
Reversible gluing device based on dielectric elastomer of the present invention, devise a kind of sandwich, make driving layer and adhesion layer can form organic matching mechanism under the support of rigid body, thus the reversible adhesion process that realization is driven by electric control dielectric elastomer (i.e. dielectric elastomerics).This reversible gluing device based on dielectric elastomer has high temperature, the ability worked under high humidity severe environment, Adhesion property is good, and de-glutinous speed is fast, simple to operate, be easy to control, highly sensitive, service life cycle is long, easily realizes the integrated of height, and preparation cost is low, the simple feature of structure.
For realizing electric drive, the upper and lower surface of the dielectric elastomeric body thin film that driving layer adopts all scribbles flexible electrode.Further preferably, the flexible electrode part of described driving layer upper and lower surface covers dielectric elastomeric body thin film, and overlay area shape is not limited to circle, can be the polygonized structure of any shape, but need ensure corresponding with rigid body position, and there is relative coincidence the overlay area of upper and lower surface.
For ensureing that rigid body can play the effect of transmission of drive force under the effect of driving layer, usually require that rigidity is greater than adhesion layer and driving layer.
In the present invention, flexible electrode can adopt carbon paste, conducting gelation, electro-conductive fiber, conductive polymers etc.Rigid body can adopt metallic substance, plastics, resilient material etc., and structure can be spheroid, cylinder, cone etc.
Reversible gluing device based on dielectric elastomer of the present invention can according to different operating modes, correspondingly adjust the combination of materials of dielectric elastomeric body thin film (i.e. dielectric elastomerics film) and its surface flexible electrode, change the material of adhesion layer, driving layer and rigid body, to meet actual requirement.
Driving layer can directly be bonded on adhesion layer, also first can carry out certain preliminary draft (carrying out the preliminary draft of geometric ratio twin shaft in two vertical direction of thin film planar), then glues between the two layers under the state having preliminary draft.This operation can regulate the deformation quantity of dielectric elastomer and the elastomeric power output of dielectric.For general acrylate materials (a kind of dielectric elastomer), as long as preliminary draft value is no more than the ultimate strength of film.
As preferably, the twin shaft preliminary draft value of described dielectric elastomeric body thin film is 0 ~ 1000%.Optimum, the preliminary draft value of described dielectric elastomeric body thin film is 300%.
Can according to the operating mode of reality and requirement, the thickness of the driving layer described in change.As preferably, the thickness of described driving layer is less than 3mm.Consider exploitativeness, as preferably, the thickness of described driving layer is 0.001 ~ 3mm, optimum, the thickness of described driving layer (the dielectric elastomeric body thin film after preliminary draft) is 0.1mm.
Described pressure sensitive adhesive adhesion layer can directly adhere to (namely not carrying out preliminary draft), also first can carry out certain preliminary draft (carrying out the preliminary draft of geometric ratio twin shaft in two vertical direction of thin film planar), then adhere under the state having preliminary draft.Young's modulus and the intensity of pressure sensitive adhesive can be adjusted, to adapt to the balance of whole device by preliminary draft operation.
As preferably, for general acrylate materials (a kind of pressure sensitive adhesive), as long as preliminary draft value is no more than the ultimate strength of material, as preferably, the twin shaft preliminary draft value of described PSA film is 0 ~ 1000%.Optimum, the preliminary draft value of described pressure sensitive adhesive is 300%.
The one side that described adhesion layer deviates from driving layer is provided with pressure sensitive adhesives.For ease of realizing, as preferably, described adhesion layer is PSA film.
According to the operating mode of reality and requirement, the thickness of PSA film can be changed, thus different adhesion strength is provided.As preferably, the thickness of described PSA film is less than 3mm.Consider exploitativeness, as preferably, the thickness of described PSA film is 0.001 ~ 3mm, optimum, the thickness of described PSA film after preliminary draft is 0.1mm.
Rigid body can be the polyhedral structure of any shape, and as preferably, described rigid body is spherical.When adhering to, and rounded contact region can be formed by between the material that adheres to, greatly strengthen the adhesion property of device.When departing from, the de-glutinous process peeled off to centre from edge can be formed, greatly reducing the difficulty of de-glutinous process, make device be easy to de-glutinous.This is very important to realizing reversible adhesion process.
Described driving layer and adhesion layer are also provided with immovable bed outward, and described immovable bed is provided with pilot hole with the relative position of rigid body, and the shape of described pilot hole is corresponding with rigid body shape.
Corresponding with the relative position of rigid body and shape on immovable bed, should be able to ensure that rigid body just can pass through pilot hole under the effect of driving layer.When rigid body is spheroid, corresponding pilot hole is circular, and the aperture of described pilot hole equals the diameter of described rigid body.And the central position of pilot hole is relative with the centre of sphere of rigid body.
Pilot hole by being fixed in the present invention, to coordinate the deformation of adhesion layer and the driving layer caused by rigid body.Make adhesion layer and driving layer by after the deformation of rigid body jack-up, just through the perforate of immovable bed, thus make driving layer and adhesion layer before and after power on/off, form comparatively large deformation, and be easy to after deformation recover, greatly reduce the manipulation difficulty of reversible adhesion process.
For realizing the flexible design of reversible gluing device, as preferably, described immovable bed is flexible material, but need ensure that immovable bed rigidity is greater than the rigidity of described dielectric elastomeric body thin film, as flexible materialss such as plastics, fiber, resin, silica gel.
Each layer of the reversible gluing device based on dielectric elastomer of the present invention is by bonding formation entirety.The upper surface of driving layer is bonded on the immovable bed of top, and lower surface and adhesion layer bond.Adhesion layer upper surface and driving layer lower surface bond, and lower surface is bonded on the immovable bed of bottom.During specific implementation, the material that the sandwich based on the reversible gluing device of dielectric elastomer is used, according to different operating modes, can select different materials.In use, adhesion layer lower surface central position needs enough cleaning, to ensure the strong adhesion property of device.
Compared with prior art, tool of the present invention has the following advantages:
Material adapted scheme is flexible, and structure is simple, can adjust arbitrarily the parameter of reversible gluing device, to adapt to the requirement of different operating mode;
Power on/off is adopted to control, simple to operate, be easy to control, be conducive to working long hours, recycle;
Reversible gluing element manufacturing can be become semiflexible reversible gluing device, perfect laminating is complex-curved, to reach complex-curved reversible adhering operation.
Accompanying drawing explanation
Fig. 1 is the structural representation of the reversible gluing device based on dielectric elastomer of the present embodiment.
Embodiment
Describe the present invention below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, based on the reversible gluing device of dielectric elastomer in the present embodiment, comprise the first immovable bed 5, adhesion layer 4, rigid body 3, driving layer 2 and the second immovable bed 1 from the bottom to top successively, wherein, the first immovable bed 5 and the second immovable bed 1 are referred to as immovable bed.
First immovable bed 5 and the second immovable bed 1 are equipped with through hole as pilot hole, to coordinate the deformation of the adhesion layer 4 and driving layer 2 caused by rigid body 3; Driving layer upper and lower surface all scribbles electrode; Rigid body 3 is a rigidity steel ball, and diameter is 8mm.
Adhesion layer 4 adopts acrylic type pressure sensitive adhesive.Driving layer 2 adopts has elastomeric dielectric elastomer.Adhesion layer 4 and driving layer 2, after twin shaft preliminary draft 300%, reach and are of a size of 20 × 20mm × 0.1mm.Driving layer 2 upper and lower surface all scribbles flexible electrode, and material is carbon paste, and flexible electrode structure is circular, and diameter is 8mm, lays respectively at the central position of driving layer 2 upper and lower surface, and the overlay area of upper and lower surface overlaps relatively.And these two electrodes are drawn by wire, in order to connecting power drives.
In the present embodiment, the material of immovable bed (comprising the first immovable bed 5 and the second immovable bed 1) is ABS plastic, is of a size of 20 × 20mm × 0.5mm.Pilot hole on first immovable bed 5 and the second immovable bed 1 is circle (namely cylindrical) structure.The aperture (diameter) of perforate is 8mm, lays respectively at the central position of the first immovable bed 5 and the second immovable bed 1.
After above-mentioned all parts manufacture is completed, by relative position shown in Fig. 1, each element is carried out bonding and be encapsulated as reversible gluing device.Wherein rigid body 3 is positioned at device center position, just can jack-up adhesion layer 4 and driving layer 2, makes it just can through the perforate of the first immovable bed 5 and the second immovable bed 1.The marginal position of the first immovable bed 5, adhesion layer 4, driving layer 2 and the second immovable bed 1 should align, and ensures that the first immovable bed 5 is just relative with the position of opening of the second immovable bed 1.
The reversible adhesion principle of the reversible gluing device based on dielectric elastomer of the present embodiment is as follows:
After dielectric elastomer upper and lower surface coats flexible electrode, constitute an easy circular drives device.When under the effect of dielectric elastomer at voltage, when there is deformation, pressure sensitive adhesive will move up and down along with steel ball, thus realizes the process of reversible adhesion.
The reversible device that sticks of the present embodiment, under the driving of dielectric elastomer, can make adhesion layer 4 and rigid body 3 move up and down along with driving layer 2, thus is formed and automatically stick the working process with automatic desorption.Concrete principle is as follows:
During power-off, the rigid body ball in the middle of device is just in central position; During energising, due to the big area deformation of driving layer dielectric elastomer and the stronger elasticity of adhesion layer, the rigid body club in the middle of device moves to driving layer direction and drives adhesion layer to be synchronized with the movement, thus makes the object that is attached on adhesion layer de-glutinous.For in power on/off change procedure, adhesion layer 4 with constantly changed by the contact area of glutinous object.During energising (sticking in process), adhesion layer with by the contact surface of glutinous object gradually, namely by putting and face (rounded face), such process of sticking is similar to a kind of buffer operation, and device and the more strong self-adaptation of object are sticked; During power-off (in de-glutinous process), adhesion layer be narrow down to final disappearance gradually by the contact surface of glutinous object, namely by edge to center, so de-process that sticks is similar to strip operation, thus greatly reduce de-glutinous required power, make the de-glutinous better effects if of device.
The change being carried out contact surface by voltage is controlled, thus realizes the control to device adhesive power, has very large using value in practice.
Above-described embodiment has been described in detail technical scheme of the present invention and beneficial effect; be understood that and the foregoing is only a preferred embodiment of the present invention; be not limited to the present invention; all make in spirit of the present invention any amendment, supplement and equivalent to replace, all should be included within protection scope of the present invention.
Claims (10)
1., based on a reversible gluing device for dielectric elastomer, it is characterized in that, comprise adhesion layer, driving layer, and the rigid body between adhesion layer and driving layer, described driving layer is the dielectric elastomeric body thin film that upper and lower surface is coated with flexible electrode layer.
2., as claimed in claim 1 based on the reversible gluing device of dielectric elastomer, it is characterized in that, the one side that described adhesion layer deviates from driving layer is provided with pressure sensitive adhesives.
3., as claimed in claim 2 based on the reversible gluing device of dielectric elastomer, it is characterized in that, described adhesion layer is PSA film.
4., as claimed in claim 3 based on the reversible gluing device of dielectric elastomer, it is characterized in that, the twin shaft preliminary draft value of described PSA film is 0 ~ 1000%.
5., as claimed in claim 4 based on the reversible gluing device of dielectric elastomer, it is characterized in that, the thickness of described PSA film is 0.001 ~ 3mm.
6., as claimed in claim 3 based on the reversible gluing device of dielectric elastomer, it is characterized in that, the twin shaft preliminary draft value of described driving layer is 0 ~ 1000%.
7., as claimed in claim 6 based on the reversible gluing device of dielectric elastomer, it is characterized in that, the thickness of described driving layer is 0.001 ~ 3mm.
8., as the reversible gluing device based on dielectric elastomer in claim 1 ~ 7 as described in any one, it is characterized in that, described rigid body is spheroid.
9., as claimed in claim 8 based on the reversible gluing device of dielectric elastomer, it is characterized in that, described driving layer and adhesion layer are also provided with immovable bed outward, and described immovable bed is provided with pilot hole with the relative position of rigid body.
10., as claimed in claim 9 based on the reversible gluing device of dielectric elastomer, it is characterized in that, the aperture of described pilot hole equals the diameter of described rigid body.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510178103.1A CN104789139B (en) | 2015-04-15 | 2015-04-15 | Reversible gluing device based on dielectric elastomer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510178103.1A CN104789139B (en) | 2015-04-15 | 2015-04-15 | Reversible gluing device based on dielectric elastomer |
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| CN104789139A true CN104789139A (en) | 2015-07-22 |
| CN104789139B CN104789139B (en) | 2016-12-07 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108923681A (en) * | 2018-08-13 | 2018-11-30 | 南昌大学 | A kind of contact dielectric elastomer electric generator structure |
| CN109261473A (en) * | 2018-07-19 | 2019-01-25 | 西安交通大学 | A kind of synthesizing jet-flow driver and preparation method thereof based on dielectric elastomer driving |
Citations (1)
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| CN104242721A (en) * | 2014-09-15 | 2014-12-24 | 湖北三江航天红林探控有限公司 | Flexible actuator |
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Patent Citations (1)
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| CN104242721A (en) * | 2014-09-15 | 2014-12-24 | 湖北三江航天红林探控有限公司 | Flexible actuator |
Non-Patent Citations (1)
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| 李铁风: "介电高弹聚合物力电行为研究与器件设计", 《固体力学学报》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109261473A (en) * | 2018-07-19 | 2019-01-25 | 西安交通大学 | A kind of synthesizing jet-flow driver and preparation method thereof based on dielectric elastomer driving |
| CN109261473B (en) * | 2018-07-19 | 2020-07-28 | 西安交通大学 | Synthetic jet driver based on dielectric elastomer drive and manufacturing method thereof |
| CN108923681A (en) * | 2018-08-13 | 2018-11-30 | 南昌大学 | A kind of contact dielectric elastomer electric generator structure |
| CN108923681B (en) * | 2018-08-13 | 2024-05-03 | 南昌大学 | Contact dielectric elastomer generator structure |
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| CN104789139B (en) | 2016-12-07 |
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