KR20180027799A - Mauufature method for porous silicone structure, mauufature method for biomimic hand palm pad of using porous silicone structure and biomimic hand palm pad - Google Patents

Abstract

Disclosed are a method for producing a porous silicone structure, a method for producing a palm pad using the same, and a palm pad thereby. To this end, the method for producing the porous silicone structure comprises the following steps: mixing a prepared silicone base and a curing agent; primarily curing a silicone mixture mixed with the silicone base and the curing agent at atmospheric pressure; decompressing ambient pressure of the silicone mixture so that inner bubbles can be expanded in the primarily cured silicone mixture; and secondarily curing the silicone mixture while keeping the ambient pressure decompressed so that the inner bubbles are maintained.

Description

Technical Field [0001] The present invention relates to a method of manufacturing a porous silicon structure, a method of manufacturing the same, and a method of manufacturing the porous silicon structure using the porous pad,

The present invention relates to a method of manufacturing a porous silicon structure, a method of manufacturing a palm pad using the same, and a palm pad.

Generally, silicon (silicon) is a polymer in which organic group-containing silicon and oxygen are chemically bonded to each other and is excellent in thermal stability, oxidation stability and elasticity, and is used in various products such as finish materials for buildings, .

Such silicones can be classified into one-pack type silicon and two-pack type silicone, depending on the properties to be cured. One-component silicon reacts with moisture in the air to cure, so that foam molding is not easy when air in the mold such as a mold is shut off. The two-component silicone is cured irrespective of moisture in the air, and curing proceeds by mixing a separate curing agent. Accordingly, in foam molding of silicon, two-part type silicon is widely used rather than one-component type silicon.

For foam molding of silicon, various methods such as mixing and curing a minute cell forming powder with liquid silicone, or adding a foaming agent and a curing agent to cure the resin are widely used. These methods have a disadvantage in that a separate additive is required and it is difficult to adjust the degree of foaming according to the desired degree in the foaming process.

 On the other hand, in the case of conventional pads used for external appearance, hard pads are often used in the form of a simulated pattern or a simple silicon layer. In this case, when the mobile phone is caught, it is impossible to operate using the characteristics of the palm, such as holding the thumb with the fingers and the palm alone, and the tactile sensation can be amplified when the social activity is performed.

Accordingly, there is a demand for a technique capable of realizing human simulated palm pads using porous silicon that can provide the environment most similar to a human hand.

Registration Utility Model Bulletin 20-0425544 (Aug. 29, 2006)

The present invention has been made to solve the above problems, and it is an object of the present invention to provide a manufacturing method of a porous silicon structure which can be used for a palm pad, a method of manufacturing a palm pad using the same, and a palm pad.

According to an aspect of the present invention, there is provided a method of manufacturing a porous silicon structure, the method including: mixing a prepared silicon subject and a curing agent; Curing the silicon mixture in which the silicon base and the curing agent are mixed, while maintaining a state in which a large amount of bubbles are contained therein; Decompressing the ambient pressure of the silicon mixture so that the inner bubble is expanded in the primary cured silicone mixture; And secondarily curing the silicone mixture while maintaining the reduced pressure of the ambient pressure so that the inner bubble is retained.

At this time, in the secondary curing step, the ambient pressure may be maintained in a reduced pressure range of 0.1 to 0.2 atm.

A method of manufacturing a palm pad using a porous silicon structure according to an embodiment of the present invention includes: a skin layer forming step of forming a skin layer corresponding to a hand surface on a mold; A fat layer forming step of forming a fat layer of a porous silicon structure on the skin layer; And a musculoskeletal layer forming step of forming a musculoskeletal layer corresponding to a hand musculoskeletal on the fat layer.

At this time, the fat layer forming step includes the steps of mixing the prepared silicon subject and the curing agent, introducing the silicone mixture mixed with the silicone subject and the curing agent into a palm-shaped mold, Decompressing the peripheral pressure of the silicon mixture so that the inner bubbles are inflated in the primary cured silicone mixture; and maintaining the reduced pressure of the peripheral pressure so that the inner bubbles are maintained, And a secondary curing step.

Also, in the step of forming the musculoskeletal layer, the synthetic resin core corresponding to the hand skeleton may be inserted into the hard silicon structure to be molded.

The step of forming the skin layer may further include the steps of mixing the prepared soft silicone subject and the curing agent, putting the silicone mixture mixed with the soft silicone subject and the curing agent onto the mold, and curing the silicone mixture at normal pressure . ≪ / RTI >

The step of forming the musculoskeletal layer includes the steps of mixing the prepared hard silicon subject and hardener, injecting the silicone mixture mixed with the hard silicon subject and hardener together with the musculoskeletal core onto the fat layer, And curing the silicon mixture at atmospheric pressure.

A palm pad using a porous silicon structure according to an embodiment of the present invention includes a skin layer formed on a mold in the form of a hand skin; A fatty layer of a porous silicon structure formed on the skin layer; And a musculoskeletal layer formed on the fat layer in the form of a hand musculoskeletal.

At this time, the fat layer is formed by firstly curing a silicone mixture containing a silicone base and a curing agent at an atmospheric pressure, reducing the peripheral pressure of the silicone mixture so that the inner bubble is expanded in the silicone mixture, The silicon mixture can be secondarily cured while maintaining the reduced pressure of the ambient pressure.

The embodiment of the present invention has an advantage in that silicon can be molded easily by controlling the degree of foaming by adjusting the degree of decompression of the ambient pressure during the molding of silicon.

In addition, the present embodiment has an advantage in that the porous silicon can be utilized to produce a palm pad most similar to a human hand.

1 is a block diagram illustrating a method of fabricating a porous silicon structure according to an embodiment of the present invention.
FIG. 2 is a graph of a physical property of a porous silicon structure according to an embodiment of the present invention compared with an actual palm and a conventional palm pad.
3 is a block diagram illustrating a method of manufacturing a palm pad using a porous silicon structure according to an embodiment of the present invention.
FIG. 4 is a block diagram illustrating a fat layer forming step in a method of manufacturing a palm pad using a porous silicon structure according to an embodiment of the present invention. Referring to FIG.
FIG. 5 is a diagram showing a correspondence relationship between a palm pad and an actual palm according to an embodiment of the present invention.
FIG. 6 is a photograph of a palm pad according to an embodiment of the present invention and a conventional palm pad.
FIG. 7 is a photograph of a palm pad according to an embodiment of the present invention and a conventional palm pad.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, configurations and operations according to embodiments of the present invention will be described in detail with reference to the accompanying drawings. DETAILED DESCRIPTION OF THE INVENTION The following description is one of many aspects of the claimed invention and the following description may form part of the detailed description of the invention. However, the detailed description of known configurations or functions in describing the present invention may be omitted for clarity.

While the invention is susceptible to various modifications and its various embodiments, it is intended to illustrate the specific embodiments and the detailed description. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

And terms including ordinals such as first, second, etc. may be used to describe various elements, but the constituent elements are not limited by such terms. These terms are used only to distinguish one component from another. It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a block diagram illustrating a method of fabricating a porous silicon structure according to an embodiment of the present invention. FIG. 2 is a graph illustrating a physical property of a porous silicon structure according to an embodiment of the present invention in comparison with an actual palm and a conventional palm pad to be.

As shown in FIG. 1, a method of manufacturing a porous silicon structure according to an embodiment of the present invention includes mixing a silicon base and a curing agent (S10), firstly curing the silicon mixture at atmospheric pressure (S20) (S30) of reducing the peripheral pressure of the silicon mixture, and a step (S40) of secondary curing the silicon mixture.

More specifically, the step (S10) of mixing the silicon base and the curing agent is performed by mixing the prepared silicone base and the curing agent with a material for forming the porous silicon, for example, a silicone base and a curing agent. In this case, the silicone base may be a two-component silicone which is easily foam-molded in a state where the air in the mold is shielded, and a curing agent may be a conventional curing agent for curing a silicone base at room temperature. Preferably, the silicone base and the curing agent are sufficiently mixed so as to generate a large amount of bubbles.

The step (S20) of primary curing the silicon mixture at atmospheric pressure firstly cures the silicon mixture containing the silicon base and the curing agent at normal pressure (atmospheric pressure). For example, the silicon mixture is cured at normal pressure for 40 to 50 minutes until the curing state of the silicon mixture is approximately half.

The step (S30) of reducing the peripheral pressure of the silicon mixture may be performed after the primary cured silicon mixture is introduced into a deaerator (vacuum molding apparatus) when the silicon mixture is first cured, Decrease the internal pressure of the deodorizer to keep it within 0.2 atmospheric pressure range. At this time, internal bubbles may be generated in the silicon mixture by decompression, and the internal bubbles of the silicon mixture may expand or contract as the ambient pressure changes.

In the step of secondary curing the silicon mixture (S40), the silicon mixture is secondarily cured for a predetermined period of time (for example, 2 to 4 hours) while the reduced pressure of the peripheral pressure is kept constant so that the internal bubbles are constant .

However, when it is difficult to adjust the internal pressure of the deodorizer uniformly, the internal pressure of the deodorizer can be reduced and increased so that the inner bubble of the silicon mixture can be maintained in a certain form. If the ambient pressure of the silicon mixture is greater than 0.2 atmospheres, the inner bubbles of the silicon mixture may become too small or too small, and if the ambient pressure of the silicon mixture is less than 0.1 atmospheres, the inner bubbles of the silicon mixture may expand excessively You can throw away. When the secondary curing of the silicon mixture is complete, the cured silicone molding is removed from the de-aerator.

The silicone molding produced through the above-described manufacturing method can realize a porous silicon structure having a fine structure having a stiffness much lower than that of the original, depending on the degree of foaming, and the silicone molding thus produced has a low stiffness Since the structure is maintained organically, it can be used as a human fat layer simulation material.

For example, as shown in FIG. 2, when comparing the physical properties between the porous silicon according to the present invention and the conventional palm pad made of a synthetic resin material, it can be seen that there is a large difference between the physical properties between them, , It can be seen that the physical properties between the porous silicon and the actual palm are similar to each other.

FIG. 3 is a block diagram illustrating a method of manufacturing a palm pad using a porous silicon structure according to an embodiment of the present invention. FIG. 4 is a view illustrating a method of manufacturing a palm pad using a porous silicon structure according to an embodiment of the present invention. , And a fat layer forming step.

3 to 4, a method of manufacturing a palm pad using a porous silicon structure according to an embodiment of the present invention includes forming a skin layer S100, forming a fat layer S100, , And a musculoskeletal layer forming step (S200).

The skin layer forming step S100 forms a skin layer corresponding to the hand floor surface on the mold in order to form a pad that forms the surface of the hand, more specifically, the floor of the hand. As a material for molding the floor of the hand, a soft silicone (e.g., Ecoflex 010) may be used.

For example, in the skin layer forming step (S100), when a soft silicone subject for forming a skin layer and a curing agent are prepared, the prepared silicone subject and the curing agent are mixed, the mixed silicone mixture is put on the mold, .

When the surface of the hand floor having the same curvature of the floor of the hand is extracted through the 3D scanner, the surface of the extracted hand floor is transferred to the mold through the 3D printer, .

The fat layer forming step S100 forms the fat layer of the porous silicon structure on the skin layer. As the fat layer, soft or hard silicon (for example, the same silicon as Ecoflex 010 is also possible) can be applied if necessary.

That is, in the fat layer forming step (S100), when the silicone base and the curing agent for forming the fat layer are prepared, the silicone base and the curing agent are mixed to generate a large amount of bubbles (S210) (S230). The ambient pressure of the silicon mixture, which is first hardened so as to expand the inner bubble, is decompressed (S240), and the decompression of the ambient pressure is maintained to maintain the inner bubble In one state, the silicon mixture is secondarily cured (S250). Thereby, a lipid layer composed of porous silicon can be formed on the skin layer.

The musculoskeletal layer forming step 300 forms the musculoskeletal layer corresponding to the hand musculoskeletal on the fat layer. Rigid silicon harder than silicon of the skin layer (e.g., Dragonskin 010) may be used as the material for forming the hand musculoskeletal.

In this musculoskeletal layer forming step S200, when the hard silicon subject and the hardening agent for forming the hand musculoskeletal are prepared, the prepared silicon subject and the hardener are mixed and the mixed silicone mixture is mixed with the musculoskeletal core 310, , The silicon mixture is cured at normal pressure.

In addition to the musculoskeletal core 310, the fixing piece 320 for fixing the palm pad to the human hand model may be combined with the silicone mixture, After charging onto the fat layer, the silicon mixture can be cured at normal pressure.

FIG. 5 is a diagram showing a correspondence relationship between a palm pad and an actual palm according to an embodiment of the present invention.

5, a palm pad 1 using a porous silicon structure according to an embodiment of the present invention includes a skin layer 100 formed on a mold in the form of a hand floor, And a musculoskeletal layer 300 formed on the fatty layer 200 in the form of a hand musculoskeletal pattern.

The skin layer 100 can be molded on the mold of the hand floor shape with a soft silicon structure having a function corresponding to the skin layer 10 of the real person.

The lipid layer 200 may be formed on the skin layer 100 with a porous silicon structure having a function corresponding to the actual lipid layer 20 of the human being. For example, when the silicon mixture having the silicone base and the curing agent cured at the atmospheric pressure is first cured, the fat layer 200 is heated to a pressure of 0.1 to 0.2 atmospheric pressure of the silicon mixture so that the inner bubble is expanded, And is secondarily cured to be formed on the skin layer 100.

The musculoskeletal ray 300 may be a rigid silicone structure that is harder than the skin layer 100 and has a silicon structure with a function corresponding to the actual human musculoskeletal layer 20. [ The musculoskeletal ray 300 may be provided with a musculoskeletal core 310 corresponding to a human musculoskeletal and a fixing piece 320 for fixing the palm pad 1 to a human hand model.

FIG. 6 is an actual photograph comparing a palm pad according to an embodiment of the present invention and a conventional palm pad. FIG. 7 is a photograph comparing an existing palm pad and a conventional palm pad according to an embodiment of the present invention.

As shown in FIGS. 6 to 7, when operating performance of a mobile phone is tested using a human hand model, the palm pads to which the porous silicon is applied can stably hold the mobile phone in a wider range than the conventional palm pads Can be performed.

For example, the palm pads to which the porous silicon is applied can improve the gripping force of the conventional palm pads using the porous silicon characteristic of a fine structure having physical properties similar to those of the actual human skin, and it is possible to maintain the stability when gripping the mobile phone.

As described above, according to the present invention, since the peripheral pressure is reduced during the molding of the foamed silicon, it is possible to form a minute structure silicon having a stiffness much lower than that of the prior art. By utilizing the porous silicon, And a palm pad of a similar type can be produced.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the scope of the present invention is not limited to the disclosed exemplary embodiments. It will also be appreciated that many modifications and variations will be apparent to those skilled in the art without departing from the scope of the present invention.

100: Skin layer 200: Fat layer
300: musculoskeletal layer 310: musculoskeletal core
320:

Claims (9)

Mixing the prepared silicone base and the curing agent;
Curing the silicon mixture containing the silicon base material and the curing agent at a normal pressure while keeping bubbles therein;
Decompressing the ambient pressure of the silicon mixture so that the inner bubble is expanded in the primary cured silicone mixture; And
And secondarily curing the silicon mixture while maintaining the reduced pressure of the ambient pressure so that the inner bubble is retained. The method according to claim 1,
The second curing step
And the peripheral pressure is maintained in a reduced pressure range of 0.1 to 0.2 atm. A skin layer forming step of forming a skin layer corresponding to a surface of a hand on a mold;
A fat layer forming step of forming a fat layer of a porous silicon structure on the skin layer; And
And a musculoskeletal layer forming step of forming a musculoskeletal layer corresponding to a hand musculoskeletal on the fat layer. The method of claim 3,
Wherein the fat layer forming step comprises:
A step of mixing the prepared silicon subject and a curing agent, a step of putting a silicon mixture in which the silicon subject and a curing agent are mixed into a palm shaped mold, a step of firstly curing the silicon mixture at normal pressure, Comprising the steps of: reducing the ambient pressure of the silicon mixture so that the inner bubbles are expanded in the silicon mixture; and secondarily curing the silicon mixture while maintaining the reduced pressure of the ambient pressure to maintain the inner bubbles. Method of manufacturing a palm pad using a silicon structure. The method of claim 3,
The musculoskeletal layer forming step
A method for manufacturing a palm pad using a porous silicon structure for inserting a synthetic resin core corresponding to a hand skeleton into the hard silicon structure. The method of claim 3,
The skin layer forming step
A method of manufacturing a porous silicon structure, comprising: mixing a prepared soft silicon subject and a curing agent; injecting the silicon mixture mixed with the soft silicon subject and curing agent onto the mold; and curing the silicon mixture at normal pressure A method of manufacturing a palm pad using the method. The method of claim 3,
The musculoskeletal layer forming step
Mixing the hard silicon subject and hardener with the hard silicone subject and the hardener, placing the silicone mixture with the hard silicone subject and hardener on the fat layer together with the musculoskeletal core, and curing the silicone mixture at normal pressure A method of manufacturing a palm pad using a porous silicon structure. A skin layer formed on the mold in the form of a hand skin;
A fatty layer of a porous silicon structure formed on the skin layer; And
A palm pads using a porous silicon structure comprising a musculoskeletal layer formed on the fat layer in the form of a hand musculoskeletal. 9. The method of claim 8,
The fat layer
A silicone mixture containing a silicone base and a curing agent is first cured at atmospheric pressure and then the peripheral pressure of the silicon mixture is reduced so that the inner bubble is expanded in the silicone mixture to maintain the decompression of the peripheral pressure so that the inner bubble is maintained Wherein the silicone composition is formed by secondarily curing the silicone mixture.

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