CN114407253A - Cavity channel structure based on soft demolding and preparation method thereof - Google Patents
Cavity channel structure based on soft demolding and preparation method thereof Download PDFInfo
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- CN114407253A CN114407253A CN202111537294.8A CN202111537294A CN114407253A CN 114407253 A CN114407253 A CN 114407253A CN 202111537294 A CN202111537294 A CN 202111537294A CN 114407253 A CN114407253 A CN 114407253A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
- B29C39/02—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
- B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
- B29C39/22—Component parts, details or accessories; Auxiliary operations
- B29C39/26—Moulds or cores
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
- B29C39/22—Component parts, details or accessories; Auxiliary operations
- B29C39/36—Removing moulded articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
- B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
- B29C2035/0827—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation using UV radiation
Abstract
The invention discloses a cavity structure based on soft demoulding and a preparation method thereof, wherein the preparation method of the cavity structure based on soft demoulding specifically comprises the following steps: providing a pouring mold with a fixing groove; fixing the cavity template to the fixing groove; pouring a base material into the pouring mold and enabling the base material to submerge the cavity template, and curing the base material; separating the cured matrix material and the cavity template from the pouring mold, fixing the matrix material, and extracting the cavity template from the matrix material to obtain the cavity structure; wherein the Young modulus of the cavity template is smaller than that of the matrix material. According to the invention, the Young modulus of the cavity template is smaller than that of the matrix material, and the shearing force borne by the cavity template is converted into the stripping force in the process of stretching and demolding the cavity template, so that the cavity structure preparation has the characteristics of simple process, rapidness and high efficiency.
Description
Technical Field
The invention relates to the technical field of cavity preparation, in particular to a cavity structure based on soft demolding and a preparation method thereof.
Background
The cavity structure as a basic component unit has important functions in nature (such as blood vessels of animals and ducts of plants), and is an indispensable component in various artificial devices, such as soft robots, flexible sensors, lab-on-a-chip and the like. In recent years, preparation technology of the cavity has been rapidly emerging and developed in different disciplines and backgrounds including drug development, chemical analysis, artificial blood vessels and wearable devices.
At present, the most mainstream cavity preparation process is a soft lithography method; the method comprises the steps of firstly, carrying out reverse molding on a mold prepared by photoetching to prepare a structure with a groove, and then, attaching the structure with another flat material to prepare a complete cavity structure. However, this method requires the use of a clean room, is expensive in equipment, and can only be used to prepare channels having a square cross-section.
In order to solve these problems, researchers have proposed different preparation methods, which are mainly divided into: a solvent template method, a swelling and extraction method, and a direct 3D printing method. However, these methods still have a series of problems; the process of dissolving the template can consume a significant amount of time; the swelling process can deform the matrix material; direct printing can have poor accuracy.
Accordingly, the prior art is yet to be improved and developed.
Disclosure of Invention
In view of the defects of the prior art, the invention aims to provide a cavity structure based on soft demolding and a preparation method thereof, and aims to solve the problems of harsh process conditions, high cost and large precision difference of the existing cavity preparation.
The technical scheme of the invention is as follows:
a preparation method of a cavity structure based on soft demolding specifically comprises the following steps:
providing a pouring mold, wherein the pouring mold is provided with at least two fixing grooves;
fixing a cavity template to the fixing groove, wherein the cavity template and the bottom of the pouring mold are arranged at intervals;
pouring a base material into the pouring mold and enabling the base material to submerge the cavity template, and curing the base material;
separating the cured matrix material and the cavity template from the pouring mold, fixing the matrix material, and extracting the cavity template from the matrix material to obtain the cavity structure;
wherein the Young modulus of the cavity template is smaller than that of the matrix material.
The preparation method of the cavity structure based on soft demolding comprises the step of preparing a cavity template into a cylindrical structure or a double-spiral structure.
The preparation method of the cavity structure based on soft demolding comprises the step of preparing a cavity template, wherein the cross section of the cavity template is one or more of a triangle, a rectangle or a circle.
According to the preparation method of the cavity structure based on soft demolding, when the cavity template is fixed to the fixing groove, two ends of the cavity template, close to the fixing groove, extend out of the pouring mold.
The preparation method of the cavity structure based on soft demolding is characterized in that the cavity template is made of a material selected from thermoplastic resin, photosensitive resin, polyurethane elastomer or rubber elastomer.
The preparation method of the cavity structure based on soft demolding is characterized in that the base material is polydimethylsiloxane prepolymer or epoxy resin.
The preparation method of the cavity structure based on soft demolding comprises the following steps of heating and ultraviolet irradiation.
The preparation method of the cavity structure based on soft demolding comprises the following specific steps of:
fixing the base material, fixing two ends of the cavity template on a sliding table by using a clamp, moving the sliding table to enable the cavity template to be subjected to tensile deformation until the cavity template is completely separated from the base material, and drawing out the cavity template from one end to obtain the cavity structure.
The preparation method of the cavity structure based on soft demolding comprises the following step of preparing a cavity template from a material, wherein the cavity template is a Teflon tube or a silica gel line.
A cavity structure is manufactured by the preparation method of the cavity structure based on soft demolding.
Has the advantages that: the invention provides a cavity structure based on soft demolding and a preparation method thereof, wherein the preparation method of the cavity structure based on soft demolding specifically comprises the following steps: providing a pouring mold, wherein the pouring mold is provided with at least two fixing grooves; fixing the cavity template to the fixing groove; pouring a base material into the pouring mold and enabling the base material to submerge the cavity template, and curing the base material; separating the cured matrix material and the cavity template from the pouring mold, fixing the matrix material, and extracting the cavity template from the matrix material to obtain the cavity structure; wherein the Young modulus of the cavity template is smaller than that of the matrix material. According to the invention, the Young modulus of the cavity template is smaller than that of the matrix material, so that the shearing force borne by the cavity template is converted into the stripping force in the process of stretching and demolding the cavity template, the external force borne by the matrix material is greatly reduced, and the inner wall of the prepared cavity structure is smooth; and by means of the advantages of low Young modulus and larger deformation of the cavity template material compared with the matrix material, the preparation process is greatly simplified, the process time is shortened, and batch production can be carried out.
Drawings
FIG. 1 is a process flow diagram of a method for preparing a cavity structure based on soft demolding according to the present invention;
FIG. 2 is a schematic structural view of the cavity mold plate of the present invention having a double-spiral structure;
FIG. 3 is a schematic structural view of the cavity template of the present invention in an irregular tubular shape;
FIG. 4 is a flow chart showing a specific process of example 1 of the present invention;
fig. 5 is a schematic structural diagram of embodiment 3 of the present invention.
Detailed Description
The invention provides a cavity structure based on soft demoulding and a preparation method thereof, and the invention is further described in detail below in order to make the purpose, technical scheme and effect of the invention clearer and more clear. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present application, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present application and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
In the existing cavity preparation method, the precision of the soft lithography is more accurate, but the preparation condition is harsh, the preparation is required to be carried out in a clean room, the equipment price is more expensive, the shape of the prepared cavity is limited, and only the cavity with a square section can be prepared at present; in order to solve the problems in the soft lithography, scholars propose cavity preparation (a dissolving template method, a swelling extraction method and a 3D printing method) with low cost, but the methods still have a series of problems, such as long time required for preparing the cavity by the dissolving template method and unsuitability for batch production; in the swelling and pulling-out method, the base material can deform during swelling, so that the cavity structure can not reach the production standard; although the 3D printing method has a simple preparation process, the precision is poor, and the production requirement cannot be met.
Based on this, as shown in fig. 1, the invention provides a preparation method of a cavity structure based on soft demolding, which specifically comprises the following steps:
s10: providing a pouring mold, wherein the pouring mold is provided with at least two fixing grooves;
s20: fixing a cavity template to the fixing groove, wherein the cavity template and the bottom of the pouring mold are arranged at intervals;
s30: pouring a base material into the pouring mold and enabling the base material to submerge the cavity template, and curing the base material;
s40: separating the cured matrix material and the cavity template from the pouring mold, fixing the matrix material, and extracting the cavity template from the matrix material to obtain the cavity structure;
wherein the Young modulus of the cavity template is smaller than that of the matrix material.
According to the preparation method of the cavity structure based on soft demolding, by utilizing the characteristic that the Young modulus of the cavity template is smaller than that of the base material, when two ends of the cavity template are stretched, the shearing force borne by the cavity template can be converted into the stripping force, and the external force borne by the base material is reduced; and after the cavity template and the base material are peeled off, directly drawing out the cavity template to prepare the cavity with the same shape as the cavity template. The preparation method is simple, requires short production time, and is suitable for batch production.
Specifically, the fixing grooves are formed in the side walls of the pouring mold, and when the cavity template is fixed to the fixing grooves, the cavity template is not in contact with the bottom of the pouring mold, namely, is in a suspended state, so that the cavity structure can be manufactured.
In some embodiments, the channel template is a cylindrical structure or a double helix structure. The cylindrical structure or the double-spiral structure is selected to ensure that the stress of the cavity template is uniform when the cavity template is stretched and peeled off subsequently, so that the problem that the cavity template is broken due to uneven stress is avoided, and the cavity is blocked.
Specifically, the cross-section of the cavity template includes, but is not limited to, one or more of a triangle, a rectangle, or a circle; when the double helix structure is formed from two cylindrical tubes, its cross-sectional area is comprised of two circles, as shown in FIG. 2; when the double spiral structure is formed of a triangular prism and a cylindrical column, the cross-sectional area thereof is composed of a circle and a triangle. It should be noted that the shape of the cross section of the cavity template may be selected according to the requirement of the cavity structure, and if the cavity structure requires a regular hexagon, the cross section of the cavity template should be selected as the regular hexagon.
In some embodiments, the lumen template is an irregular tubular structure; specifically, the two ends of the cavity template are linear structures, the middle part of the cavity template can be selected according to the actual application requirements, as shown in fig. 3, the cross-sectional area of the middle part of the cavity template gradually increases and then decreases along the directions of the two ends to form an irregular tubular structure.
It should be noted that the cross-sectional area of the cavity template refers to the cross-sectional area perpendicular to the axial direction of the cavity template.
In some embodiments, when the cavity template is fixed to the fixing groove, both ends of the cavity template close to the fixing groove extend out of the casting mold. The two ends of the cavity template can be clamped conveniently and then stretched and deformed when the cavity template is demoulded in the follow-up process, so that the base material can be peeled.
In some embodiments, the material of the channel template is selected from, but not limited to, a thermoplastic resin, a photosensitive resin, a polyurethane-based elastomer, or a rubber-based elastomer.
Specifically, the cavity template is a Teflon tube or a silica gel wire.
In some embodiments, the matrix material includes all materials that can be solidified from a liquid to a solid, but does not include materials that can become liquid upon melting; thus, the matrix material may be selected from cement, gypsum, ceramics, uv curable resins, thermosetting resins, and A, B component hybrid resins (e.g., Ecoflex series and Dragonskin series from Smooth-on, epoxy resins, etc.);
specifically, the matrix material includes, but is not limited to, polydimethylsiloxane prepolymer or epoxy resin; the liquid-state material is selected as the base material, so that the liquid-state base material and the cavity template can be seamlessly filled, and the prepared cavity structure is smooth in surface and free of pits.
In the invention, when selecting materials, the young modulus of the cavity template needs to be smaller than that of the matrix material; the invention utilizes the stretching deformation of the cavity template to strip the matrix material, if the Young modulus of the cavity template is larger than that of the matrix material, the cavity template is not easy to demould, and the cavity structure of the matrix material is damaged during stretching, thus the aim of the invention can not be achieved; and when the Young modulus of the cavity template is smaller than that of the matrix material, the cavity template can be reduced in cross section until the matrix material is peeled off due to tensile deformation in the process of stretching the cavity template, and the cavity structure cannot be adversely affected.
In some embodiments, the curing process is performed by means including, but not limited to, heat, ultraviolet radiation; the curing treatment mode mainly depends on the selection of the matrix material, and a proper curing treatment mode is selected according to the curing characteristics of the matrix material, so that the production efficiency of the cavity channel is improved.
Specifically, when A, B-component mixed resin is selected as the base material, A, B-component mixed curing may be performed.
In some embodiments, the specific step of extracting the channel template from the base material comprises: fixing the base material, fixing two ends of the cavity template on a sliding table by using a clamp, moving the sliding table to enable the cavity template to be subjected to tensile deformation until the cavity template is completely separated from the base material, and drawing out the cavity template from one end to obtain the cavity structure.
The method for preparing the cavity structure based on soft demolding has the characteristics of simple process, rapidness and high efficiency, and can be used for preparing the cavity structure with the diameter of micron and the super-large length-diameter ratio.
A cavity structure is manufactured by the preparation method of any one of the cavity structures based on soft demolding.
The present invention will be described in further detail with reference to examples. It is also to be understood that the following examples are illustrative of the present invention and are not to be construed as limiting the scope of the invention, and that certain insubstantial modifications and adaptations of the invention by those skilled in the art may be made in light of the above teachings.
Example 1
This example will be further described in order to better understand the method for preparing a channel structure based on soft mold release according to the present invention.
In this embodiment, as shown in fig. 4, a rectangular parallelepiped casting mold with an opening at one end and a closed end at the other end is provided, wherein two symmetrical sidewalls of the casting mold have fixing grooves recessed toward the bottom direction, and the fixing grooves are used for fixing the cavity template.
Specifically, the preparation method of the cavity structure based on soft demolding specifically comprises the following steps:
step S11, preparing a mold: preparing a material of the pouring mold, designing a required structure of the pouring mold by utilizing Solidwords software, and printing by a 3D printer, wherein the pouring mold in the embodiment adopts the cuboid pouring mold;
step S21, fixing the cavity template: placing a cavity template (a Teflon pipe or a silica gel line) in a fixing groove of the pouring mold, and clamping and fixing two ends of the cavity template by using a clamp to prevent the middle part of the cavity template from sagging due to gravity to cause the deformation of a cavity structure;
specifically, two ends of the cavity template need to extend out of the side wall of the pouring mold, so that subsequent stripping is facilitated. In this embodiment, the cavity template is cylindrical.
Step S31, pouring a base material and curing: pouring liquid base materials into the pouring mold, wherein the base materials submerge the cavity template, and curing the base materials in subsequent treatment;
specifically, the polydimethylsiloxane prepolymer and the cross-linking agent are uniformly stirred and mixed according to the mass ratio of 10:1 to remove bubbles, and then the mixture is poured into the pouring mold; the substrate was then cured in an oven at 60 ℃ for 8 hours to fully cure the substrate.
Step S41, separating the mold: taking down the fixture for fixing the cavity template, and separating the cured matrix material and the cavity template from the pouring mold;
step S51, applying external force and separating the cavity template: firstly fixing a base material, then fixing two ends of the cavity template on a sliding table and clamping the sliding table by using a clamp, then moving the sliding table to move towards the direction of stretching the cavity template until the cavity template is completely separated from the base material, and at the moment, loosening the clamp to directly take the cavity template out of the base material to obtain the cavity structure.
In the embodiment, by means of the characteristic that the Young modulus of the cavity template is lower than that of the base material and the advantage of large deformation, the process for preparing the cavity structure is greatly simplified, the process time is shortened, and batch production can be realized. The base material is fixed, the cavity template is stretched by the sliding table, so that the shearing force borne by the cavity template can be converted into a peeling force, the external force borne by the base material is greatly reduced, the surface of the prepared cavity structure is smooth, and the ultra-long cavity structure can be prepared by the method.
Example 2
In this example, the other steps are the same except that the cavity mold plate is different from embodiment 1.
Specifically, the cavity template of the present embodiment is an irregular tubular structure; the two ends of the cavity template are linear structures, and the cross-sectional area of the middle part is gradually increased and then decreased along the directions of the two ends to form an irregular tubular structure, as shown in fig. 3.
The cavity structure manufactured by the cavity template is irregular in shape, and has more application scenes.
Example 3
As shown in fig. 5, the casting mold of the present embodiment is provided with ten fixing grooves, that is, the casting template of the present embodiment has 5 pairs of fixing grooves, and five cavity structures can be prepared in the matrix material at one time, so as to meet social requirements.
It should be noted that, in this embodiment, the steps are the same as those in embodiment 1 except that the number of the casting molds and the cavity templates is different from that in embodiment 1.
The matrix material prepared by the pouring mold can be used for preparing a plurality of cavity structures at one time, so that a large amount of time is saved, and the inner walls of the prepared cavity structures are smooth.
In summary, the invention provides a cavity structure based on soft demolding and a preparation method thereof, and the preparation method of the cavity structure based on soft demolding specifically comprises the following steps: providing a pouring mold, wherein the pouring mold is provided with a plurality of fixing grooves; fixing the cavity template to the fixing groove; pouring a base material into the pouring mold and enabling the base material to submerge the cavity template, and curing the base material; separating the cured matrix material and the cavity template from the pouring mold, fixing the matrix material, and extracting the cavity template from the matrix material to obtain the cavity structure; wherein the Young modulus of the cavity template is smaller than that of the matrix material. According to the invention, the Young modulus of the cavity template is smaller than that of the matrix material, so that the shearing force borne by the cavity template is converted into the stripping force in the process of stretching and demolding the cavity template, the external force borne by the matrix material is greatly reduced, and the inner wall of the prepared cavity structure is smooth; and by virtue of the advantages of low Young modulus and larger deformation than that of the matrix material of the cavity template. Greatly simplifies the preparation process, shortens the process time and can be produced in batches.
It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.
Claims (10)
1. A preparation method of a cavity structure based on soft demoulding is characterized by comprising the following steps:
providing a pouring mold, wherein the pouring mold is provided with at least two fixing grooves;
fixing a cavity template to the fixing groove, wherein the cavity template and the bottom of the pouring mold are arranged at intervals;
pouring a base material into the pouring mold and enabling the base material to submerge the cavity template, and curing the base material;
separating the cured matrix material and the cavity template from the pouring mold, fixing the matrix material, and extracting the cavity template from the matrix material to obtain the cavity structure;
wherein the Young modulus of the cavity template is smaller than that of the matrix material.
2. The method for preparing a cavity structure based on soft demolding according to claim 1, wherein the cavity template is of a columnar structure or a double-spiral structure.
3. The method for preparing a channel structure based on soft demolding according to claim 2, wherein the cross section of the channel template is one or more of triangular, rectangular or circular.
4. The method for preparing a cavity structure based on soft demolding according to claim 2, wherein when the cavity template is fixed to the fixing groove, two ends of the cavity template, which are close to the fixing groove, extend out of the pouring mold.
5. The method for preparing a cavity structure based on soft demolding according to claim 1, wherein the cavity template is made of a material selected from thermoplastic resin, photosensitive resin, polyurethane elastomer or rubber elastomer.
6. The method for preparing a cavity structure based on soft demolding according to claim 5, wherein the cavity template is a Teflon tube or a silica gel wire.
7. The method for preparing a cavity structure based on soft demolding according to claim 1, wherein the matrix material is polydimethylsiloxane prepolymer, epoxy resin, gypsum or cement.
8. The method for preparing a cavity structure based on soft demolding according to claim 7, wherein the curing treatment mode comprises heating and ultraviolet irradiation.
9. The method for preparing a cavity structure based on soft demolding according to claim 1, wherein the specific step of extracting the cavity template from the base material comprises the following steps:
fixing the base material, fixing two ends of the cavity template on a sliding table by using a clamp, moving the sliding table to enable the cavity template to be subjected to tensile deformation until the cavity template is completely separated from the base material, and drawing out the cavity template from one end to obtain the cavity structure.
10. A channel structure, characterized in that it is produced by means of a method for the production of a channel structure based on soft demolding according to any one of claims 1-9.
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| CN202111537294.8A CN114407253A (en) | 2021-12-15 | 2021-12-15 | Cavity channel structure based on soft demolding and preparation method thereof |
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| CN202111537294.8A CN114407253A (en) | 2021-12-15 | 2021-12-15 | Cavity channel structure based on soft demolding and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1205225A (en) * | 1957-03-14 | 1960-02-01 | Vickers Armstrongs Aircraft | Improvements in the production of plastic elbow pipes |
| GB1409736A (en) * | 1971-10-01 | 1975-10-15 | Boeing Co | Methods for fabricating laminated fluted structures |
| DE102008057779A1 (en) * | 2008-11-17 | 2010-05-27 | Eads Deutschland Gmbh | Molding core for making hollow, fibrous moldings with aerospace applications, is pulled out, causing it to unwind continuously as strip or series of segments |
| CN108890937A (en) * | 2018-06-29 | 2018-11-27 | 山东省科学院能源研究所 | A kind of preparation method of the hydrogel chip of dendroid channel design |
| CN112208099A (en) * | 2020-08-17 | 2021-01-12 | 江苏大学 | Device for integrally forming and manufacturing complex structure of inner cavity of soft robot |
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2021
- 2021-12-15 CN CN202111537294.8A patent/CN114407253A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1205225A (en) * | 1957-03-14 | 1960-02-01 | Vickers Armstrongs Aircraft | Improvements in the production of plastic elbow pipes |
| GB1409736A (en) * | 1971-10-01 | 1975-10-15 | Boeing Co | Methods for fabricating laminated fluted structures |
| DE102008057779A1 (en) * | 2008-11-17 | 2010-05-27 | Eads Deutschland Gmbh | Molding core for making hollow, fibrous moldings with aerospace applications, is pulled out, causing it to unwind continuously as strip or series of segments |
| CN108890937A (en) * | 2018-06-29 | 2018-11-27 | 山东省科学院能源研究所 | A kind of preparation method of the hydrogel chip of dendroid channel design |
| CN112208099A (en) * | 2020-08-17 | 2021-01-12 | 江苏大学 | Device for integrally forming and manufacturing complex structure of inner cavity of soft robot |
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