JP2021176835A - Cosmetic composition having ferroelectricity and piezoelectricity - Google Patents

Abstract

To provide a cosmetic composition having ferroelectricity and piezoelectricity.SOLUTION: Provided are a cosmetic composition having piezoelectric performance, more precisely a cosmetic composition having piezoelectric performance which can effectively transmit a water-soluble active ingredient to skin without assistance of a cosmetic device, in which the cosmetic composition having piezoelectric performance includes emulsifier, polymer powder, emulsion stabilizer, piezoelectric polymer and water.SELECTED DRAWING: None

Description

The present invention relates to a cosmetic composition having ferroelectricity and piezoelectricity, and more specifically, has a piezoelectric performance capable of effectively transmitting a water-soluble active ingredient to the skin without the assistance of a cosmetological device. Regarding cosmetic compositions. Therefore, the cosmetic composition having the piezoelectric performance is characterized by containing an emulsifier, a polymer powder, an emulsion stabilizer, a piezoelectric polymer and water.

The microcurrent device market has continued to grow for decades. Research has shown for many years that microelectric currents have effects on wound healing, cell activity, skin tone improvement and skin elasticity. However, beauty devices have some flaws. There are obstacles in use such as high prices and inconveniences when using. Therefore, in order to solve these two problems, it has been recognized as an important issue to devise a dosage form capable of generating a minute current without a beauty device. When using cosmetics, most consumers use them by subdividing and then tapping or applying pressure to the skin. Dosage forms can be made by adding the concept of piezoelectricity to such usage. Piezoelectric phenomenon is a concept that generates a minute current by maintaining a mechanical tension state and inducing a polarization phenomenon. In particular, when shear stress is applied, a fine current flows in the piezoelectric part of the liquid crystal display.

Basically, the definition of liquid crystal is also called a liquid crystal, which is a substance that is fluid like a liquid but maintains some of the regular structure that is characteristic of crystals. The liquid crystal display was discovered in 1888. At that time, I observed a mysterious dissolution phenomenon of cholesterol benzoate synthesized by Austrian botanist Reinitzer. The substance is a solid at room temperature, but heating it produces a liquid that is opaque and mucous at 145 ° C. It is further heated to become a transparent liquid for the first time at 179 ° C. When it is cooled, it goes through the opposite process and becomes a solid through an opaque liquid. German physicist Lehmann, who received this sample, used a polarizing microscope to optically crystallize the material in the temperature range of 145 ° C and 179 ° C, even though it was a liquid. It was confirmed that the state had anisotropy, and the phase was designated as the "liquid crystal phase". That is, they discovered that there is a mesophase called a liquid crystal phase between the solid phase and the isotropic liquid phase.

Currently, liquid crystals are roughly classified into thermotropic liquid crystals and lyotropic liquid crystals. The electrons themselves become liquid crystals in a specific temperature range, areotropic liquids at higher temperatures, and solid crystals at lower temperatures. In the latter, as typified by soapy water, the solution becomes liquid crystal in a specific concentration range.

Among them, the thermotropic liquid crystal was introduced in 1922 by G.M. The liquid crystal structure based on Friedel's optical observation was classified into nematic (N: nematic) liquid crystal, cholesteric (C: cholesterol) liquid crystal, and smectic (S: smectic) liquid crystal (see FIG. 1).

The nematic phase has no regularity in the molecular position, but has an order (orientative order) in the direction premised on the molecular axis. In addition, since the directions of the molecules are almost the same at the top and bottom, the polarizations cancel each other out, and generally do not show ferroelectricity.

The smectic phase is the most regular and layered in sequence. In the layer plane, there is no regularity in the position of the molecule, but in the direction in which the plane is at a right angle, there is regularity. Therefore, the regularity of the molecular position (positional order) is maintained in one direction, and the molecular axis has an order toward one direction as a whole. When smectics and nematics are shown as liquid crystal substances, smectics with good regularity are always shown in a temperature region lower than that of nematics. The molecular arrangement within the layer of the smectic liquid crystal indicates various classifications.

In the cholesteric phase, when the molecular axis is twisted, or when a chiral molecule is mixed with the nematic liquid crystal, the director N of the nematic liquid crystal is twisted. A liquid crystal with such an arrangement is called a cholesteric liquid crystal. The twisted PTL is in the range of approximately 0.3. The twisting direction, right or left, is determined by the substance, except in special cases. The cholesteric phase has a layered structure like the smectic phase, but the molecular arrangement in each layer is in the major axis direction, and the layer planes are parallel. The major axis direction of the molecules in each layer is slightly deviated from the major axis direction of the adjacent layer molecules, and has a spiral structure as a whole. Such a name was given because it is often found in cholesteric derivatives, but cholesteric itself does not have liquid crystallinity.

Under such a technical background, research on piezoelectric cosmetic compositions is being actively promoted (Patent Document 1), but the actual situation has not yet been prepared.

Korean Registered Patent No. 10-0785672

The present invention is for solving the above-mentioned problems, and an object of the present invention is to provide piezoelectric performance capable of effectively transmitting a water-soluble active ingredient to the skin without the assistance of a beauty device. It is in the place of providing a cosmetic composition having.

The aforementioned and other objectives and advantages of the present invention will become apparent from the following description which describes the preferred embodiments.

The above object is also achieved by a cosmetic composition having piezoelectric performance, which comprises an emulsifier, a polymer powder, an emulsion stabilizer, a piezoelectric polymer and water.

The emulsifiers are glyceryl stearate / PEG-100 stearate, cyclopentasiloxane / PEG / PPG-19 / 19 dimethicone, (C14). -22) Alcohol / (C12-20) alkylglucoside (C14-22 alcohols / C12-20 alkylglucoside), sorbitan olivate, glyceryl stearate SE, polysorbate 60 and polysorbate It is also at least one selected from -polyglyceryl-2 stearate / glycolyl stearate / stearyl alcohol.

The polymer powders include carbomer, hydroxyethyl acrylate / sodium acryloyldimethyl taurate copolymer and sodium polyacrylate / ethylhexyl stearate / trideceth. It is also at least one selected from -6).

The emulsion stabilizer is at least one selected from cetearyl alcohol, cetyl palmitate, behenyl alcohol and stearic acid.

The piezoelectric polymer is polyvinylidene fluoride (PVDF), poly (vinylidene fluoride-co-trifluoroethylene) [P (VDF-TrFE)], poly (vinylidene fluoride-co-tetrafluoroethylene) [P ( VDF-TeFE)], PZT-PVDF, PZT-silicon rubber, PZT-epoxy, and PZT-urethane foam.

The piezoelectric polymer may be contained in an amount of 1 to 30% by weight based on the total weight of the cosmetic composition.

The viscosity of the cosmetic composition is also 10,000 to 40,000 cps.

The surface resistance value of the cosmetic composition is also 900 to 1,900 Ω / sq.

Desirably, the cosmetic composition may further comprise a moisturizer, a preservative and an oil.

Desirably, the cosmetic composition has an emulsifier of 0.1 to 5.0% by weight, a polymer powder of 0.1 to 1.0% by weight, an emulsion stabilizer of 0.1 to 5.0% by weight, and high piezoelectricity. It may contain 0.01 to 0.0% by weight of the molecule and the remaining amount of water.

According to the present invention, it has an effect that a water-soluble active ingredient can be effectively transmitted to the skin without the support of a cosmetological device.

However, the effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned above will be clearly understood by those skilled in the art from the following description.

It is a figure which classified the type of the liquid crystal display by temperature. It is a figure which showed schematic the unit crystal quality in PVDF. It is a figure which showed an example of the liquid crystal forming emulsion production method. It is an experimental result which confirmed the liquid crystal stability of A-1 to A-6 of Experimental Example 1. It is a figure which showed the microscopic observation photograph of A-1 to A-6 of Experimental Example 1. It is a graph which showed the viscosity of B-1 to B-8 of Experimental Example 1. It is a figure which showed the microscopic observation photograph of B-1 to B-8 of Experimental Example 1. It is a figure which showed the microscopic observation photograph of C-1 to C-10 of Experimental Examples 1 and 2. It is a figure which showed an example of the emulsion manufacturing method of W / O type and O / W type. It is a figure which showed the microscopic observation photograph of D-1 to D-8 of Experimental Examples 1 and 2. It is a figure which showed the surface resistance measurement experimental apparatus. It is a figure which showed the surface resistance measurement result of E-1 to E-6 of Experimental Example 1. It is a figure which showed an example of the liquid crystal forming emulsion production method containing PVDF. It is a graph which showed the viscosity of F-1 to F-5 of Experimental Example 1. It is a figure which showed the microscopic observation photograph of F-1 to F-5 of Experimental Example 1. It is a figure which showed the surface resistance measurement result of G-1 to G-5 of Experimental Example 1. It is a graph which showed the viscosity of B-1 to B-8 of Experimental Example 2. It is a figure which showed the microscopic observation photograph of B-1 to B-8 of Experimental Example 2. It is a figure which showed the surface resistance measurement result of E-1 to E-6 of Experimental Example 2. It is a graph which showed the viscosity of F-1 to F-5 of Experimental Example 2. It is a figure which showed the microscopic observation photograph of F-1 to F-5 of Experimental Example 2. It is a figure which showed the surface resistance measurement result of G-1 to G-5 of Experimental Example 2. It is a figure which showed the voltage waveform of the Β-phase PVDF applied to G-2 of Experimental Example 2. It is an experimental result which confirmed the liquid crystal stability of A-1 to A-6 of Experimental Example 3. It is an experimental result which confirmed the liquid crystal stability of A-1 to A-6 of Experimental Example 3. It is a graph which showed the viscosity of B-1 to B-8 of Experimental Example 3. It is a figure which showed the microscopic observation photograph of B-1 to B-8 of Experimental Example 3. It is a figure which showed the microscopic observation photograph of C-1 to C-10 of Experimental Example 3. It is a figure which showed the microscopic observation photograph of D-1 to D-8 of Experimental Example 3. It is a figure which showed the surface resistance measurement result of E-1 to E-6 of Experimental Example 3. It is a graph which showed the viscosity of F-1 to F-5 of Experimental Example 3. It is a figure which showed the microscopic observation photograph of F-1 to F-5 of Experimental Example 3. It is a figure which showed the surface resistance measurement result of G-1 to G-5 of Experimental Example 3. It is a figure which showed the surface resistance measurement result of G-3 of Experimental Example 3. It is a figure which showed the voltage waveform of the Β-phase PVDF applied to G-2 of Experimental Example 3.

Hereinafter, the present invention will be described in detail with reference to examples and drawings of the present invention. It is understood by those skilled in the art that these examples are merely provided exemplary to illustrate the invention in more detail and the scope of the invention is not limited by those examples. It will be obvious to those skilled in the art.

Also, unless otherwise defined, all technical and scientific terms used herein have the same meaning as generally understood by a skilled person in the art to which the present invention belongs. However, in the event of conflict, the description herein, including the definition, takes precedence.

In order to clearly explain the invention proposed in the drawings, parts not related to the description are omitted, and similar parts are designated by similar drawing reference numerals throughout the specification. And when a part "contains" a component, it does not exclude other components unless otherwise stated to be the opposite, and may further include other components. means. Further, the "part" described in the specification means one unit or block that performs a specific function.

In each step, the identification codes (first, second, etc.) are used for convenience of explanation, the identification codes do not describe the order of each step, and each step is contextual. As long as the specific order is not explicitly stated, it will be implemented in a different order from the specified order. That is, each step is performed in the same order as specified, substantially at the same time, and in the reverse order.

The cosmetic composition having piezoelectric performance according to one embodiment of the present invention is characterized by containing an emulsifier, a polymer powder, an emulsion stabilizer, a piezoelectric polymer and water. The water-soluble active ingredient exerts excellent efficacy in the skin, but has a fatal disadvantage that it cannot be absorbed transdermally. To complement that, we have tried an approach that uses cosmetology equipment, and the related market is growing, but it is not effectively leading the cosmetics market, and ultimately, without the support of cosmetology equipment. It is desirable to create a transmitter that can effectively transmit water-soluble active ingredients to the skin. The present invention is a technique capable of satisfying the demands of such a market, and can effectively transmit a water-soluble active ingredient to the skin by utilizing a piezoelectric polymer and without the support of a beauty device. ..

The emulsifier basically assists in mixing a water-soluble component and a fat-soluble component in a cosmetic composition, and is used to induce an aromatic liquid crystal display. The emulsifier is 0.1 to 5.0% by weight, 0.5 to 5% by weight, 0.5 to 4% by weight, 0.1 to 1.5% by weight based on 100% by weight of the entire cosmetic composition. It is desirable to include it. If the content of the emulsifier is out of the weight range and is excessively low or high, liquid crystal formation will not be performed well. As the emulsifier, various known emulsifiers can be used alone or in combination. Examples include olive wax extracted from olives, montanobu wax extracted from coconut oil, xanthan gum, which is a natural rubber component derived from microorganisms, beeswax extracted from beehives, and cetyl alcohol extracted from coconut. , Desirably, glyceryl stearate / PEG-100 stearate, cyclopentasiloxane / PEG / PPG-19 / 19 dimethicone, (C14). -22) Alcohol / (C12-20) alkylglucoside (C14-22 alcohols / C12-20 alkylglucoside), sorbitan olivate, glyceryl stearate SE, polyglyceryl-2 stearate / stearic acid At least one selected from polyglyceryl-2 stearate / glycolyl stearate / stearyl alcohol and polysorbate 60 can be used.

The polymer powder is a component that contributes to the formation of liquid crystal in the cosmetic composition, and is preferably contained in an amount of 0.1 to 1.0% by weight, preferably 0.1 to 1.0% by weight, based on 100% by weight of the entire cosmetic composition. It is more desirable to be 0.3% by weight. If the content of the polymer powder is out of the weight range and is excessively low or high, a suitable viscosity cannot be formed or phase separation occurs. As the polymer powder, various known polymer powders can be used alone or in combination. Desirably, carbomer, hydroxyethyl acrylate / sodium acryloyldimethyl taurate copolymer and sodium polyacrylate / ethylhexyl stearate / trideceth-6. At least one selected from the above can be used.

The emulsification stabilizer is a component that contributes to the formation of liquid crystals by assisting the action and stabilization of emulsification, and is 0.1 to 5.0% by weight, 0.5 to 50% by weight, based on 100% by weight of the entire cosmetic composition. It is desirable that it is contained in an amount of 5% by weight, or 0.5 to 4% by weight. If it is out of the above range and is excessively low or high, it is not possible to form a suitable viscosity, or liquid crystal formation is not performed well. The emulsion stabilizer can be used alone or in combination with various known higher alcohols and / or higher fatty acids. Desirably, cetearyl alcohol, cetyl palmitate, behenyl alcohol, polyglyceryl-2 stearate / glyceryl stearate / stearyl alcohol and At least one selected from stearic acid can be used.

The viscosity of the cosmetic composition is also 10,000 to 40,000 cps.

For example, the cosmetic composition may be 25,000 to 40,000 cps, 25,000 to 35,000 cps, 25,000 to 30,000 cps, 25,000 to 29,000 cps, or 26,000 to 28,000 cps. Can have high viscosity.

Also, for example, 10,000 to 25,000 cps, 15,000 to 25,000 cps, 15,000 to 20,000 cps, 16,000 to 20,000 cps, 16,000 to 19,000 cps, 16,500 to 19, It can have a low viscosity of 000 cps, or 17,000 to 19,000 cps.

The surface resistance value of the cosmetic composition is also 900 to 1,900 Ω / sq, and in the case of the cosmetic composition having a high viscosity of 25,000 to 40,000 cps, 1,370 to 1,803 Ω / sq. , 1,370 to 1,735 Ω / sq, or 1,370 to 1,621 Ω / sq.

Further, in the case of the cosmetic composition having a low viscosity of 10,000 to 25,000 cps, 900 to 1,600 Ω / sq, 900 to 1,500 Ω / sq, 900 to 1,450 Ω / sq, 900 to 1, It is also 350Ω / sq and 900 to 1,200Ω / sq.

The piezoelectric polymer is a polymer substance in which a voltage is generated by pressure. In the piezoelectric phenomenon, the relative positions of ions having electrical properties change due to mechanical deformation and vibration inside the piezoelectric substance, while electrodes are formed. This is a phenomenon in which the charge density changes at the interface between the piezoelectric material and the piezoelectric material, and electrical energy is generated.

The piezoelectric polymer has a high viscosity with respect to 100% by weight of the entire cosmetic composition, and is 0.1 to 1% by weight, 0.1 to 0.8% by weight, or 0. It may be contained in an amount of 1 to 0.5% by weight. Further, the piezoelectric polymer is 1 to 30% by weight, 1 to 20% by weight, 1 to 15% by weight for a cosmetic composition having a low viscosity with respect to 100% by weight of the entire cosmetic composition. It may be contained in an amount of 1 to 10% by weight, 1 to 8% by weight, 1 to 5% by weight, 1 to 3% by weight, or 2 to 8% by weight.

The piezoelectric polymer can be used alone or in combination with known substances, but it is desirable to use polyvinylidene fluoride (PVDF) in the cosmetic composition. PVDF is _{also a repeating unit of −CH 2} CF ₂ − and is a semicrystalline polymer containing 59.4% by weight of fluorine and 3% by weight of hydrogen. The crystallinity is in the range of 35 to 70%, and depending on the chain conformation, it has five types of crystal structures: Α phase, Β phase, Γ phase, Δ phase, and Ε phase. Of these, the A phase and the Β phase are the most common. As can be seen from FIG. 2, the dipole moment of the Α phase is irregularly oriented, but in the case of the Β phase, it is polar because it is an all-trans conformation. , All dipole moments point in the same direction. As a result, in the Β phase, polarization is spontaneously generated and exhibits piezoelectric characteristics. Since the diameter of the fluorine atom is 0.270 nm, which is larger than the space provided by the carbon chain (0.256 nm), in the Β phase, adjacent fluorine atoms overlap each other, and in order to reduce this, CF _{The two} units tend to be converted to the A phase and the Γ phase while warping from side to side. Therefore, in a general situation, the Α phase is formed more easily than the Β phase, and a process of changing the Α phase to the Β phase is required in order to realize piezoelectricity by utilizing PVDF. It is called polarization or polling, and is generally done by applying a strong electric field at a specific temperature or by undergoing a mechanical deformation process such as stretching. In addition, UV-A irradiation also allows polarization because a strong external force acts on it. The polarization is also performed via a voltage application of 0.1 to 200 KV, UV-A irradiation for 10 to 120 minutes, or pressurization of 1 to 120 bar.

Water functions as a solvent.

In the field of cosmetics, it is difficult to obtain a piezoelectric effect by simply adding PVDF. It is absolutely necessary to perform the pretreatment and correct it to the Β phase. That part is difficult to realize in the general cosmetics field. In the general industrial field, the solvent is used with THF (tetrahydrofuran), but it is not applicable as a safety problem. However, in this experiment, safety was ensured by one of UV-A irradiation, polling or annealing, the phase was changed to the Β phase, and the piezoelectric effect was shown. Above all, when a pressure of 5 bar is applied through a precision measuring instrument, a fine current of 0.1 V, 10.0 to 20.0 μA flows. Therefore, there is an inventive step in the technology by devising a suitable pretreatment method for PVDF, which has not been applied in the cosmetic field, and presenting a piezoelectric effect solution.

The cosmetic composition having a high viscosity has an effect of maintaining a constant surface resistance value even though it contains 0.1 to 0.5% by weight of a piezoelectric polymer at a low concentration.

In the case of a cosmetic composition having a low viscosity, although it contains 1 to 20% by weight of a piezoelectric polymer at a high concentration, there is no agglutination phenomenon and there is an effect of having a lower surface resistance value.

On the other hand, in order to improve the functionality of the cosmetic composition, a moisturizer, a preservative and an oil may be further contained in addition to the above-mentioned components.

When the cosmetic composition is used, the moisturizer has a function of drawing in the moisture in the air and transmitting it to the skin, or preventing the evaporation of moisture on the surface of the skin. The moisturizer is preferably contained in an amount of 10 to 20% by weight based on 100% by weight of the entire cosmetic composition. As the moisturizer, various known moisturizers such as glycerin, propylene glycol, butylene glycol, ceramide, PCA sodium, hyaluronic acid, castor oil, and jojoba oil can be used alone or in combination. Desirably, at least one of 1,3-butylene glycol-P (1,3-butylene glycol-P), glycerine USP and dipropylene glycol can be used.

The preservative has a function of suppressing or reducing the growth of microorganisms in cosmetics, and the preservative is contained in an amount of 0.1 to 1.0% by weight based on 100% by weight of the entire cosmetic composition. Is desirable. As the preservative, various known preservatives can be used alone or in combination. Desirably, the preservative may be at least one of propanediol / caprylyl glycol / ethylhexylglycerin and ethylhexylglycerin / glycolyl caprylate. can.

The oil functions as a protective film that prevents evaporation of nutrients and water supplied to the skin, and is preferably contained in an amount of 10 to 25% by weight based on 100% by weight of the entire cosmetic composition. As the oil, various known oils can be used alone or in combination. Desirably, the oil uses at least one of tri (caprylic / capric acid) glyceride (caprylic / capric triglyceride), cyclohexasiloxane / cyclopentasiloxane and dimethicone. be able to.

Hereinafter, the configuration of the present invention and the effects thereof will be described in more detail with reference to specific examples. However, the present embodiment is for more specific explanation of the present invention, and the scope of the present invention is not limited to these examples.

[Material preparation]
The emulsifiers are Arlacel # 165 (glyceryl stearate / PEG-100 stearate, CRODA (USA)), BY 11-030 (cyclopentaic acid / PEG / PPG-19 / 19 dimethicone, Dow Corning (Japan)), MONTANOV L (C14-22). alcohols / C12-20 alkylglucoside, SEPPIC (France), OLIVEM 900 (sorbitan olivate, B & T SRL (Italy)), MGS-ASE (glyceryl stearate SE, NIKKOL (Korea)), Tween 60V (polysorbate 60, CRODA (USA)) ), POLYAQUAL-2W (polyglyceryl-2 stearate / glycolyl stearate / stearyl alcohol, INNOVACOS (Italy)) was used.

As the moisturizer, 1,3-butylene glycol (butylene glycol, Kyowa Hakko Kagaku (Japan)), glycerine USP (glycerin, LG (Korea)), DPGFG (dipropylene glycol, SKC (Korea)) were used.

As the oil, MASESTER E6000 (caprylic / capric triglyceride, PT MUSIM MAS (Indonesia)), SERASENSE SF CM56 (cyclohexaic acid / cyclopentaolefin, KCC (Korea)), SF 1000N-5CST (dimethicone, KCCCORP (Korea)) were used.

Thickeners and polymer powders are CARBOPOL® 980 polymer (carbomer, LUBRIZOL (USA)), SEPINOVE EMT 10 (hydroxyethyl acrylate / sodium acryloyldimethyl taurate copolymer, SEPPIC (France)), T-1W (polyvinylidene difluoride,). WANHAO FLOUROCHEMICAL (China), FLOCARE ET 100 (sodium polyacrylate / ethylhexyl stearate / trideceth-6, SNF (France)) were used.

Higher alcohols are KALCOL 6850P (cetearyl alcohol, PILIPINAS KAO (Philippines)), SURFACARE CP (cetyl palmitate, SURFACHEM (UK)), behenyl alcohol 80R (behenyl alcohol, higher alcohol (Japan)), EMERSOL 7036 (stearic acid, EMERY). (Malaysia)) was used.

As the preservative, J-GUARD GH815 (propanediol / capillary glycol / ethylhexylglycerin, JSKBIO (Korea)) and J-GUARD H102 (ethylhexylglycerin / glycolyl caprylate, J2KBIO (Korea)) were used.

[Experimental equipment]
A stirrer (PRIMIXER, Primix corporation (Japan)) was used to mix the aqueous solution. The vacuum emulsion mixer PVQS-5UN, Mizuho (Japan) was used to perform pressurization and scale-up. A viscometer (brookfield viscometer LVT, BROOKFIELD ENG.LAB. INC. (USA)) and a PH meter (THERMO ORION 520A (USA)) were used to measure the viscosity and PH. The emulsified particles are sent through an optical microscope (Model 339554, Nikon (Japan)), and the liquid crystal formation is confirmed by attaching a polarizing plate to the optical microscope and passing through an image analyzer (Model CP15U, MITSUBISHI (JAPAN)). Observed. Non-contact surface resistance was measured using EDDYCUS® TF LAB 2020 SERIES. A UV-A UV box was used to induce polarization of the dosage form. A precision measuring instrument (electrometer 6517A, KEITHLEY (Switzerland)) was used for current measurement. A self-made module and oscilloscope (6104BD, HANTEK (China)) and a charge amplifier (5050B10, KISTLER (Switzerland)) were used for voltage measurement.

[Experimental Example 1]
1. 1. Polymer powder selection experiment The contents shown in Table 1 below were mixed to produce samples (A-1 to A-6) (see FIG. 3). After adding the oil phase, the polymer powder was homogenized at 2,000 rpm for 10 minutes, and a sample meeting the target viscosity of 28,000 cps was confirmed.

As a result of the experiment, the viscosity of A-1 was optimal at 29,000 cps. In cases such as A-2, separation occurred and A-3 to A-6 did not match the target viscosity or separation occurred (see FIGS. 4 and 5).

2. Emulsion stabilizer selection experiment The contents shown in Table 2 below were mixed to prepare samples (B-1 to B-8) (see FIG. 3). Regarding the effect on the flow characteristics of the O / W emulsion, the presence or absence of liquid crystal formation was confirmed through a microscope (Model CP15U, Mitsubishi (Japan)) equipped with a polarizing plate.

As a result of the experiment, B-2 formed a viscosity of 29,500 cps, which was the closest to the target viscosity. The viscosity of each sample is shown in FIG. As a result of checking the liquid crystal, B-2 was the clearest in the degree of liquid crystal particle formation, and the liquid crystal size was also constant. B-3 and B-4 could not satisfy the target viscosity, and B-5 and B-6 were formed with a high viscosity because the liquid crystal display was not clear. Also in B-7 and B-8, the target viscosity could not be formed, and the liquid crystal was not clear (see FIG. 7).

3. 3. Emulsifier selection experiment The contents shown in Table 3 below were mixed to prepare samples (C-1 to C-10) (see FIG. 3). Appropriate emulsifiers and contents were confirmed through a microscope (Model CP15U, Mitsubishi (Japan)) equipped with a polarizing plate.

As a result of the experiment, it was observed that C-3 formed the clearest liquid crystal. C-7 also had good liquid crystal formation. Looking at C-1 to C-5, it was confirmed that the frequency of liquid crystal display was low, the liquid crystal display was the clearest in C-3, and the liquid crystal formation was further reduced. In C-6 to C-10, it was confirmed that the liquid crystal formation gradually decreased (see FIG. 8).

4. Microscopic observation of non-liquid crystal formed sample The contents shown in Table 4 below were mixed to produce W / O type and O / W type samples (D-1 to D-8) (see FIG. 9), and the liquid crystal was displayed. Particles were confirmed through a polarizing microscope and a microscope to confirm the correlation with the emulsion.

As a result of the experiment, in the case of D-1 to D-4, the emulsified particles of D-2 were the best, and in the case of D-5 to D-8, the emulsified particles of D-7 were the best (Fig.). 10).

5. Surface resistance measurement experiment for evaluating the presence or absence of piezoelectricity <br /> In order to measure surface resistance, 6 types of samples (E-1 <general O / W cream, D-2 sample>, E-2 <general W / O cream, D-7 sample>, E-3 <liquid crystal cream 1, carbohydrater 0.3% sample, A-1 sample>, E-4 <liquid crystal cream 2, cetearyl alcohol 4.0% sample, B-2 sample >, E-5 <Liquid crystal cream 3, C-7 sample>, E-6 <Liquid crystal cream 4, C-3 sample>) were prepared, and a fixed amount (10 g) was put in the same amount in a 10x10 cm zipper bag and measured. .. The thickness of the dosage form was maintained at 3.5 mm. Non-contact surface resistance measurement is a method of measuring the resistance value by applying a magnetic field to a conductor at regular intervals according to Fleming's law, and it came out through this experiment according to local Ohm's law (i = σE). The resistance value can be determined by the magnetic field strength. Experiments were carried out with the EddyCus® TF lab 2020 series as shown in FIG.

The experimental results are shown in FIG. While the average surface resistance of the E-6 sample was measured to be 2,057 Ω / sq, the effect of piezoelectricity was most noticeable. Both E-1 and E-2 show the result of no response to the stimulus. Through the adjustment of the measurement height in the program by the sample height, the measurement area showed more stable measurement results. The surface resistance of the E-3, E-4, and E-5 samples was measured as an average of 2,870 Ω / sq, 2,640 Ω / sq, and 2,465 Ω / sq, respectively, and stabilized after the piezoelectric effect in the sample. It was confirmed that it would take some time to complete the process.

6. Piezoelectric polymer addition experiment The contents shown in Table 5 below were mixed to prepare samples (F-1 to F-6) (see FIG. 13). To change the orientation of PVDF, ^{UV-A of 2,000 mJ / cm 2} was irradiated for about 2 minutes and then sheared (max 2,000 rpm) to convert the polymer precursor to an elastomer. ..

As a result of the experiment, it was confirmed that the viscosity tends to increase as the content of PVDF increases (see FIG. 14). That is, the higher the PVDF content, the more the correlation that agglutination occurs. It was also confirmed that it affects the sharpness and size of the liquid crystal display. The sharpness of F-2 was the best, and the viscosity was 29,000 cps, which was close to the target viscosity. F-1 also had good viscosity and liquid crystal formation, but it was difficult to find liquid crystal formation in F-5 (see FIG. 15).

7. Surface resistance measurement experiment for evaluating the presence or absence of piezoelectricity <br /> In order to measure surface resistance, 5 types of samples (G-1 <PVDF 0.1% liquid crystal cream, F-1 sample>, G-2 <PVDF 0.2% liquid crystal cream, F-2 sample>, G-3 <PVDF 0.3% liquid crystal cream, F-3 sample>, G-4 <PVDF 0.4% liquid crystal cream, F-4 sample>, G -5 <PVDF 0.5% liquid crystal cream, F-5 sample>) was prepared, and a fixed amount (10 g) was placed in the same amount in a 10x10 cm zipper bag for measurement. The thickness of the dosage form was maintained at 3.5 mm. Non-contact surface resistance measurement is a method of measuring the resistance value by applying a magnetic field to a conductor at regular intervals according to Fleming's law, and it came out through this experiment according to local Ohm's law (i = σE). The resistance value can be determined by the magnetic field strength. Experiments were carried out with the EddyCus® TF lab 2020 series as shown in FIG.

The experimental results are shown in FIG. While the surface resistance of G-2 was measured to be 1,375Ω / sq, the effect of piezoelectricity was most noticeable. G-3, G-4 and G-5 all showed no response to the stimulus. Through the adjustment of the measurement height in the program by the sample height, the measurement area showed more stable measurement results. It took time for the surface resistance of G-2 to stabilize in the sample after the piezoelectric effect. The reason why this surface resistance value is meaningful is interpreted as a result that the lower the surface resistance value, the higher the current density, and the longer the initial resistance value measurement time, the stronger the current density in comparison with the magnetic field at i = σE. Because. In the case of G-2, the resistance value is the lowest, and it takes a long time to obtain the initial resistance value. Therefore, the actual resistance value is even lower, and the current density is high even when a magnetic field is applied. It is expected to be expensive and slow searching. Further, when the measurement was performed after applying the pressure with G-2, it took a long time from 1 minute to 11 minutes until the surface resistance was measured.

[Experimental Example 2]
1. 1. Polymer powder selection experiment The contents shown in Table 6 below were mixed to produce samples (A-1 to A-6) (see FIG. 3). After adding the oil phase, the polymer powder was homogenized at 2,000 rpm for 10 minutes, and a sample meeting the target viscosity of 18,000 cps was confirmed.

As a result of the experiment, the viscosity of A-4 was 18,000 cps, which was the optimum. In the case of A-1, A-2, separation occurred, and A-3, A-5, A-6 could not match the target viscosity, or separation occurred.

2. Emulsion stabilizer selection experiment The contents shown in Table 7 below were mixed to prepare samples (B-1 to B-8). The effect on the flow characteristics of the O / W emulsion was confirmed through a microscope (Model CP15U, Mitsubishi (Japan)) equipped with a polarizing plate to confirm the presence or absence of liquid crystal formation.

As a result of the experiment, B-2 formed a viscosity of 18,000 cps. The viscosity of each sample is shown in FIG. As a result of checking the liquid crystal, B-2 was the clearest in the degree of liquid crystal particle formation, and the liquid crystal size was also constant. B-3 and B-4 could not satisfy the target viscosity, and B-5 and B-6 were formed with a high viscosity because the liquid crystal display was not clear. Also in B-7 and B-8, the target viscosity could not be formed, and the liquid crystal was not vivid (see FIG. 18).

3. 3. Emulsifier selection experiment 3. The procedure was carried out under the same conditions as the emulsifier selection experiment. The results are similarly shown as shown in FIG.

4. Microscopic observation of non-liquid crystal display sample 4. The procedure was carried out under the same conditions as the microscopic observation of the liquid crystal non-formed sample. The results are similarly shown as shown in FIG.

5. Surface resistance measurement experiment for evaluating the presence or absence of piezoelectricity <br /> In order to measure surface resistance, 6 types of samples (E-1 <general O / W cream, D-7 sample>, E-2 <general W / O cream, D-2 sample>, E-3 <LCD cream 1, A-4 sample>, E-4 <LCD cream 2, cetearyl alcohol 4.0%, B-2 sample>, E-5 <LCD cream 3, C-7 sample>, E-6 <liquid crystal cream 4, C-3 sample>) were prepared, and a fixed amount (10 g) was put in the same amount in a 10 × 10 cm zipper bag and measured. The thickness of the dosage form was maintained at 3.5 mm. Non-contact surface resistance measurement is a method of measuring the resistance value by applying a magnetic field to a conductor at regular intervals according to Fleming's law, and it came out through this experiment according to local Ohm's law (I = ΣE). The resistance value can be determined by the magnetic field strength. Experiments were carried out with the EDDYCUS® TF LAB 2020 series as shown in FIG.

The experimental results are shown in FIG. While the average surface resistance of the E-3 sample was measured to be 2,007Ω / sq, the effect of piezoelectricity was most noticeable. Both E-1 and E-2 show the result of no response to the stimulus. Through the adjustment of the measurement height in the program by the sample height, the measurement area showed more stable measurement results. The surface resistance of the E-4, E-5, and E-6 samples was measured as an average of 2,670 Ω / sq, 2,640 Ω / sq, and 2,587 Ω / sq, respectively, and stabilized after the piezoelectric effect in the sample. It was confirmed that it would take some time to complete the process.

6. Piezoelectric polymer addition experiment The contents shown in Table 8 below were mixed to prepare samples (F-1 to F-6) (see FIG. 13). To change the orientation of PVDF, ^{UV-A of 2,000 mJ / cm 2} was applied for about 2 to 120 minutes and then sheared (max 2,000 rpm) to convert the polymer precursor to an elastomer. I let you.

As a result of the experiment, as shown in FIG. 20, it was confirmed that the viscosity tends to increase as the content of PVDF increases. That is, the higher the PVDF content, the more the correlation that agglutination occurs. It was also confirmed that it affects the sharpness and size of the liquid crystal display, as shown in FIG. The sharpness of F-2 was the best, and the viscosity was 18,000 cps, which was close to the target viscosity. F-1 and F-3 also had good viscosity and liquid crystal formation, but it was difficult to find liquid crystal formation in F-4 and F-5.

7. Surface resistance measurement experiment for evaluating the presence or absence of piezoelectricity and precision measuring instrument measurement <br /> Five kinds of samples (G-1 <PVDF 1.0% liquid crystal cream, F-1 sample>, for measuring surface resistance G-2 <PVDF 2% liquid crystal cream, F-2 sample>, G-3 <PVDF 8% liquid crystal cream, F-3 sample>, G-4 <PVDF 14% liquid crystal cream, F-4 sample>, G- 5 <PVDF 20% liquid crystal cream, F-5 sample>) was prepared, and a fixed amount (10 g) was put in the same amount in a 10 × 10 cm zipper bag and measured. The thickness of the dosage form was maintained at 3.5 mm. Non-contact surface resistance measurement is a method of measuring the resistance value by applying a magnetic field to a conductor at regular intervals according to Fleming's law, and it came out through this experiment according to local Ohm's law (I = ΣE). The resistance value can be determined by the magnetic field strength. Experiments were carried out with the EDDYCUS® TF LAB 2020 series as shown in FIG.

The experimental results are shown in FIG. While the surface resistance of G-2 was measured as 1,075Ω / sq, the effect of piezoelectricity was most noticeable. G-1 and G-3 showed 1,321 Ω / sq and 1,435 Ω / sq, respectively. Through the adjustment of the measurement height in the program by the sample height, the measurement area showed more stable measurement results. The surface resistances of G-4 and G-5 were measured to be 1,427 Ω / sq and 1,503 Ω / sq on average, respectively, but it took time for the sample to stabilize after the piezoelectric effect. The reason why this surface resistance value is meaningful is interpreted as a result that the lower the surface resistance value, the higher the current density, and the longer the initial resistance value measurement time, the stronger the current density in comparison with the magnetic field. Because. In the case of G-2, the resistance value is the lowest and it takes a long time to obtain the initial resistance value, so it is estimated that the actual resistance value is even lower and the current density is high even when a magnetic field is applied. , Searching is expected to be slow. Further, when the measurement was performed after applying the pressure with G-2, it took a long time from 1 minute to 11 minutes until the surface resistance was measured.

Using an electrometer 6517A, the current amount of the G-2 sample having the lowest surface resistance was measured as a MIM (metal insulator metal) structure. At this time, when an impact of 5 bar was applied to the input, the current values were shown to be 10.0 to 20.0 μA and 0.1 V.

8. Oscilloscope voltage measurement and d0 (piezoelectric constant) measurement In order to obtain the voltage and d0 (piezoelectric constant), measurements were performed with the G-2 sample having the lowest surface resistance value and the best current amount. .. It was confirmed how the voltage signal looks in the module to be waterproofed when 30 ml is injected into the module manufactured by itself and a force is applied at a pressure of 0.1 MPa.

As shown in FIG. 23, when confirmed with the settings of the oscilloscope (6104BD, HANTEK (China)) and the charge amplifier 100 gain, a voltage of 50 V was generated while the upper and lower peaks were formed. In the case of d0 (piezoelectric constant), it can be obtained as follows.
Force (N) = pressure (Pa) x area (m ² )
119.025N = 0.1MPa * 0.00119025m ² (copper plate radius 3.45cm)
* Charge amplifier specifications (= 10 mV / pC)
0.01V / pC * 119.025N / 50V (voltage generation amount during G-2 piezoelectric) = 0.59N / pC
∴d0 (piezoelectric constant) = 42.008pC / N

As a result of measuring the voltage and the piezoelectric constant in the module manufactured by itself, the voltage was measured as 50V, and d0 (piezoelectric constant) was measured as 42.008pC / N.

[Experimental Example 3]
1. 1. Polymer powder selection experiment The contents shown in Table 9 below were mixed to produce samples (A-1 to A-6) (see FIG. 3). After adding the oil phase, the polymer powder was homogenized at 2,000 rpm for 10 minutes, and a sample meeting the target viscosity of 18,000 cps was confirmed.

As a result of the experiment, as shown in FIG. 24, the experiment corresponding to the target viscosity of 18,000 cps was A-3, and the viscosity was 17,000 cps. In the case of A-1, separation occurred, and in the A-2, A-4, A-5, A-6 experiments, the target viscosity could not be met or separation occurred. Moreover, as a result of observing with a microscope, as shown in FIG. 25, the liquid crystal formation of A-3 and A-4 was best shown.

2. Emulsion stabilizer selection experiment The contents shown in Table 10 below were mixed to prepare samples (B-1 to B-8). The effect on the flow characteristics of the O / W emulsion was confirmed through a microscope (Model CP15U, Mitsubishi (Japan)) equipped with a polarizing plate to confirm the presence or absence of liquid crystal formation.

As a result of the experiment, as shown in FIG. 26, B-2 formed a viscosity of 18,500 cps, which was the closest to the target viscosity. Further, as shown in FIG. 27, B-2 was the clearest in terms of the degree of liquid crystal particle formation, and the liquid crystal size was also constant. B-3 and B-4 could not satisfy the target viscosity, and B-5 and B-6 were formed with a high viscosity because the liquid crystal display was not clear. Also in B-7 and B-8, the target viscosity could not be formed, and the liquid crystal display was not vivid.

3. 3. Emulsifier selection experiment In order to induce an aromatic liquid crystal display, an experiment was carried out to select the optimum content of all four types of emulsifiers. The emulsifier was carried out by fixing glyceryl stearate SE to 0.5% and changing the contents of cyclopentaolefin / PEG / PPG-19 / 19 dimethicone, C14-22 alcohols / C12-20 alkylglucoside, and sorbitan olivate. The moisturizer was glycerin 15% and oil caprylic / capric triglyceride 10%, and the polymer powder was fixed at hydroxyethyl acrylate / sodium acryloyldimethyl taurate copolymer 0.6%, and the process proceeded under the same conditions as in Table 11.

As a result, as shown in FIG. 28, the clearest liquid crystal was formed in C-3. In addition, the liquid crystal formation was also good in C-8. In addition, it was confirmed that the frequency of liquid crystal display was low in C-1 to C-5, the clearest in C-3, and the liquid crystal formation was further reduced. It was confirmed that the formation of liquid crystal was gradually reduced in C-6 to C-10, and that the frequency of liquid crystal was high in C-8.

4. Microscopic observation of liquid crystal non-formed sample and control group In order to investigate the correlation between the liquid crystal formed sample and the liquid crystal non-formed sample, W / O type and O / W type emulsions were observed under a microscope. For the two emulsions on which no liquid crystal was formed, the emulsifiers were selected as cyclopentaolefin / PEG / PPG-19 / 19 dimethicone and glycolyl stearate / PEG-100 stearate, respectively, as a control group through previous studies, and Table 12 shows. The experiment was carried out through such a prescription and the process as shown in FIG. Particles were confirmed through a polarizing microscope and a microscope. Two types of emulsions have also been prepared for use as a control group when measuring surface resistance, current and voltage.

As a result, as shown in FIG. 29, when the experiment was carried out by increasing the content of cyclopentasiloxane / PEG / PPG-19 / 19-dimethicone, the emulsified particles of D-2 were the best. In D-5 to D-8, the emulsified particles of D-7 formulated with 2.5% glyceryl stearate / PEG-100 stearate were the best.

5. Surface resistance measurement experiment for evaluating the presence or absence of piezoelectricity <br /> In order to measure the surface resistance, 6 types of samples in the experimental group (E-1 <general O / W cream, D-2 sample>, E-2 <general W / O cream, D-7 sample>, E-3 <liquid crystal cream 1, hydroxyethyl acrylate / sodium acryloyldimethyl taurate copolymer 0.6% sample, A-3 sample>, E-4 <liquid crystal cream 2, cetearyl alcohol 4. 0% sample, B-2 sample>, E-5 <liquid crystal cream 3, C-8 sample>, E-6 <liquid crystal cream 4, C-3 sample>) were prepared. At the time of measurement, it should be noted that a fixed amount (10 g) was put in the same amount in a 10x10 cm zipper bag and measured. The thickness of the dosage form was maintained at 3.5 mm. Non-contact surface resistance measurement is a method of measuring resistance value by applying a magnetic field to a conductor at regular intervals according to Fleming's law. Then, according to the local Ohm's law i = σE, the current density of the resistance value obtained through this experiment can be obtained from the magnetic field strength. Experiments were carried out with the EddyCuS® TF lab 2020 series as shown in FIG.

As a result, as shown in FIG. 30, in the E-6 (C-3 sample) experiment, the influence of piezoelectricity was most noticeable while the average surface resistance was measured as 2,057 Ω / sq. Both E-1 and E-2 show the result of no response to the stimulus. The measurement area shows more stable measurement results through the measurement height adjustment in the program by the sample height. The average surface resistance of E-3 (hydroxyethyl acrylate / sodium acryloyldimethyl taurate copolymer 0.6%), E-4 (cetearyl alcohol 4.0%), and E-5 (C-8 sample) is 2,870 Ω / sq, respectively. , 2,640 Ω / sq and 2,465 Ω / sq, but it took time to stabilize the sample after the piezoelectric effect.

6. Piezoelectric polymer addition experiment In this experiment, PVDF was added to the step of applying an emulsifier, polymer powder, and higher alcohol suitable for forming liquid crystal. PVDF, which is a piezoelectric polymer, is a polymer having a piezoelectric ability by an orientation method. In this experiment, the experiment was advanced by applying the piezoelectric polymer content from 0.20% to 20.00%. Then, as a polling method, work is performed at a temperature of 30 ° C. to 120 ° C. for 1 minute to 30 minutes from 0.1 KV to 200.0 KV with a high voltage applyer, or UV-A irradiation is performed for 10 minutes to 120 minutes. In addition to the method of proceeding through, one of the processes proceeded by applying a pressure of 1 bar to 120 bar was selected and proceeded. The formulation was as shown in Table 13, and the process proceeded as shown in FIG. Through previous studies, the polymer precursor was converted to β-PVDF by polarization to alter the orientation of PVDF.

As a result of the experiment, as shown in FIGS. 31 and 32, the higher the content, the higher the viscosity correlation tended to be. The higher the content, the more the correlation that agglutination occurs. It seems to affect the sharpness and size of the liquid crystal. In F-5, it was difficult to find liquid crystal formation. F-2 had the best sharpness and a viscosity of 18,000 cps, which was close to the target viscosity. F-1 also had good viscosity and liquid crystal formation.

7. Surface resistance measurement experiment to evaluate the presence or absence of piezoelectricity and precision measuring instrument measurement <br /> In order to measure the surface resistance, 5 kinds of samples in the experimental group (G-1 <PVDF 1.0% liquid crystal cream>, G-2 <PVDF 2.0% liquid crystal cream>, G-3 <PVDF 8.0% liquid crystal cream>, G-4 <PVDF 14.0% liquid crystal cream>, G-5 <PVDF 20.0% liquid crystal cream>) Got ready. At the time of measurement, it should be noted that a fixed amount (10 g) was put in the same amount in a 10x10 cm zipper bag and measured. The thickness of the dosage form was maintained at 3.5 mm. Non-contact surface resistance measurement is a method of measuring resistance value by applying a magnetic field to a conductor at regular intervals according to Fleming's law. Then, according to the local Ohm's law i = σE, the current density of the resistance value obtained through this experiment can be obtained from the magnetic field strength. Experiments were carried out with the EddyCus® TF lab 2020 series as shown in FIG. In addition, for voltage measurement, a self-made module, an oscilloscope, and a charge amplifier were used, a pressure of 0.1 MPa / sec was applied, and a waveform change was confirmed. Finally, for the current measurement, each of the five experimental groups was placed in the module chamber manufactured by itself, pressurized at 10 bar / sec, and the current change value was confirmed.

As a result of the experiment, as shown in FIG. 33, in G-2, the influence of piezoelectricity was most noticeable while the surface resistance was measured as 1,075 Ω / sq. As shown in FIG. 34, both G-4 and G-5 show the measurement results of the surface resistances of 1,427 Ω / sq and 1,503 Ω / sq in response to the stimulus. The measurement area shows more stable measurement results through the measurement height adjustment in the program by the sample height. The surface resistances of G-1 and G-3 were measured to be 1,321 Ω / sq and 1,435 Ω / sq on average, respectively, but it took time for the sample to stabilize after the piezoelectric effect. The reason why this surface resistance value is meaningful is that when a current flows, it flows to a place where the resistance value is relatively low. In the case of G-2, the resistance value is the lowest and it takes a long time to obtain the initial resistance value, so it is estimated that the actual resistance value is even lower and the current density is high even when a magnetic field is applied. , Searching is expected to be slow. Finally, in the G-5 experiment, when the measurement was performed after applying pressure, it took a long time from 1 minute to 11 minutes until the surface resistance was measured.

8. Oscilloscope voltage measurement and d0 (piezoelectric constant) measurement Using a precision measuring instrument, the current amount of the G-2 sample with the lowest surface resistance was measured with the MIM (metal insulator metal) structure. At this time, when an impact of 5 bar was applied to the input, the current values were shown to be 10.0 to 50.0 μA and 0.1 V.

In order to obtain the voltage and d0 (piezoelectric constant), the measurement was performed with the G-2 sample having the lowest surface resistance value and the best current amount. When 30 ml was injected into the module manufactured by itself and a force was applied at a pressure of 0.1 MPa / sec, it was confirmed how the voltage signal looked in the module to be waterproofed. When confirmed with the settings of the oscilloscope and the charge amplifier 100 gain, a voltage of 50 V was generated while the upper and lower symmetrical DC peaks were formed. In the case of d0 (piezoelectric constant), it can be obtained as follows.
Force (N) = pressure (Pa) x area (m ² )
119.025N = 0.1MPa * 0.00119025m ² / (copper plate radius 3.45cm)
* Charge amplifier specifications (= 10 mV / pC)
0.01V / pC * 119.025N / 50V (voltage generation amount during G-2 piezoelectric) = 0.59N / pC
∴d0 (piezoelectric constant) = 42.008pC / N

As a result of measuring the voltage and the piezoelectric constant in the module manufactured by itself, as shown in FIG. 35, the voltage was measured as 50V, and d0 (piezoelectric constant) was measured as 42.008pC / N.

In the present specification, only a few examples will be described among the various examples performed by the present inventors, but the technical idea of the present invention may be limited or limited thereto. It goes without saying that it is not something that can be done, but that it can be transformed and implemented in various ways by those skilled in the art.

Claims (11)

A ferroelectric and piezoelectric cosmetic composition containing an emulsifier, a polymer powder, an emulsion stabilizer and a piezoelectric polymer. The emulsifiers are glyceryl stearate / PEG-100 stearate, cyclopentasiloxane / PEG / PPG-19 / 19 dimethicone, (C14). -22) Alcohol / (C12-20) alkylglucoside (C14-22 alcohols / C12-20 alkylglucoside), sorbitan olivate, glyceryl stearate SE, polysorbate 60 and polysorbate 2. The strong dielectric and piezoelectricity according to claim 1, which is at least one selected from polyglyceryl-2 stearate / glycolyl stearate / stearyl alcohol. Cosmetic composition to have. The polymer powders include carbomer, hydroxyethyl acrylate / sodium acryloyldimethyl taurate copolymer and sodium polyacrylate / ethylhexyl stearate / trideceth. The cosmetic composition having strong dielectric property and piezoelectric property according to claim 1, which is at least one selected from -6). The emulsion stabilizer is at least one selected from cetearyl alcohol, cetyl palmitate, behenyl alcohol and stearic acid. The cosmetic composition having the strong dielectric property and the piezoelectric property according to 1. The piezoelectric polymer is polyvinylidene fluoride (PVDF), poly (vinylidene fluoride-co-trifluoroethylene [P (VDF-TrFE)]], poly (vinylidene fluoride-co-tetrafluoroethylene [P). (VDF-TeFE)], PZT-PVDF, PZT-silicon rubber, PZT-epoxy, PZT-urethane foam, at least one of the claims. Item 3. The cosmetic composition having strong dielectric property and piezoelectric property according to Item 1. The ferroelectric and piezoelectric cosmetic composition according to claim 5, wherein the piezoelectric polymer is contained in an amount of 1 to 30% by weight based on the total weight of the cosmetic composition. The ferroelectric and piezoelectric cosmetic composition according to claim 1, wherein the viscosity of the cosmetic composition is 10,000 to 40,000 cps. The ferroelectric and piezoelectric cosmetic composition according to claim 1, wherein the surface resistance value of the cosmetic composition is 900 to 1,900 Ω / sq. The ferroelectric and piezoelectric cosmetic composition according to claim 1, wherein the cosmetic composition further contains a moisturizer, a preservative and an oil. The ferroelectric and piezoelectric method according to claim 1, wherein the method for polling the piezoelectric polymer is a voltage application of 0.1 to 200 KV, UV-A irradiation for 10 to 120 minutes, or pressurization of 1 to 120 bar. A cosmetic composition having sex. A method of applying the composition according to claim 1 to the skin of an individual to improve the skin penetrating power of the water-soluble active ingredient.

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