JP2020018952A - Laminate film for pressure oscillation, pressure oscillation device, and defoaming method - Google Patents

Abstract

To provide a laminate film for pressure oscillation which is durable against use in high-temperature and/or high-pressure environment, a pressure oscillation device which is usable under high temperature and/or high pressure and facilitates scale-up by an increase in the size of a container and space saving by reduction in the size, and a defoaming method using them.SOLUTION: A laminate film for pressure oscillation has a metal layer and a polymer elastomer layer.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a laminated film for pressure oscillation, a pressure oscillation device, and a defoaming method using the same, which enable external pressure oscillation to be transmitted to a high-temperature and / or high-pressure fluid.

  Devices and methods for removing air bubbles from highly viscous fluids are used in the fields of coatings, adhesives, pastes such as foods, inks, cosmetics, and the like for the purpose of improving productivity and quality.

  Conventionally used apparatuses and methods include, for example, those that apply a vertical impact to the entire container containing a highly viscous fluid (Patent Documents 1 and 2) and those that apply vibration to a highly viscous fluid in a vacuum state. (Patent Documents 2 and 3) that apply pressure vibration from outside to a highly viscous fluid placed in a container having a single-layer vibration film made of rubber such as silicone rubber through a vibration film (Patent Documents 4 and 5). ) And the like.

JP-A-8-290008 JP-A-10-263311 JP-A-2000-42304 JP 2007-54680 A Japanese Patent Application No. 2011-526721

  However, the apparatuses and methods described in Patent Documents 1 and 2 apply a vertical impact to the entire container containing a highly viscous fluid. Therefore, high strength is required for the container and the like, and the scale of the container is increased. There is a problem that is difficult. In the apparatuses and methods described in Patent Literatures 2 and 3, vibration is applied to a vacuum system, so that a high-level vacuum technology that can maintain a vacuum state even when vibration is required is required. However, there are problems such as an increase in operation costs and securing of installation space.

  The devices and methods described in Patent Literatures 4 and 5 can reduce the problems in the techniques of Patent Literatures 1 to 3, but propagate external pressure vibration to a highly viscous fluid injected into the device. Because a single-layer vibrating film made of rubber such as silicone rubber is used, the vibrating film hardens or dissolves when the viscous fluid is at a high temperature, and vibrates when the viscous fluid is at a high pressure. The problem is that the membrane is broken by pressure.

  The present invention solves the above-mentioned problems in the prior art, and can be used under a high-temperature and / or high-pressure environment, and can be used under high-temperature and / or high-pressure. It is an object of the present invention to provide a pressure vibrating device that can easily save space by scaling up and miniaturizing, and a defoaming method using these devices.

The present invention employs the following means to solve the above problems.
(1) A laminated layer for pressure vibration, comprising a metal layer and a polymer elastomer layer.
(2) The laminated film for pressure oscillation according to (1), wherein the thickness of the metal layer is 0.10 mm or more and 3.00 mm or less.
(3) The laminated film for pressure oscillation according to (1) or (2), wherein the polymer elastomer layer contains a fluorine-based polymer elastomer as a main component.
(4) The laminated film for pressure vibration according to (3), wherein the fluoropolymer elastomer has a perfluoroalkyl vinyl ether skeleton.
(5) A pressure vibration device comprising: the pressure vibration laminated film according to any one of (1) to (4); and a vibration applying unit.
(6) The pressure vibration device according to (5), wherein the polymer elastomer layer of the pressure vibration laminated film is in contact with a vibration applying unit.
(7) A defoaming method characterized in that bubbles are removed from a viscous fluid by the pressure vibration device according to (5) or (6).
(8) The polymer elastomer layer in the pressure oscillation laminated film provided in the pressure oscillation device has a fluoropolymer elastomer as a main component, and the temperature of the viscous fluid is 200 ° C. or more and 320 ° C. or less. The defoaming method according to (7).

  ADVANTAGE OF THE INVENTION According to this invention, the laminated film for pressure oscillation which can withstand use under high temperature and / or high pressure environment, it can be used even under high temperature and / or high pressure, and the space saving by scale-up and size reduction by enlarging a container. It is also possible to provide a pressure vibration device which is easy to use, and a defoaming method using these devices.

BRIEF DESCRIPTION OF THE DRAWINGS It is the schematic which shows the lamination film for pressure vibrations and the manufacturing method which concern on one Embodiment of this invention. FIG. 3 is a schematic diagram showing a positional relationship between a pressure vibration laminated film and a vibration applying unit in the pressure vibration device according to one embodiment of the present invention. It is a schematic diagram of the pressure vibration device used in the example.

  Hereinafter, the present invention will be described specifically. The laminated film for pressure vibration of the present invention is characterized by having a metal layer and a polymer elastomer layer. By adopting such an embodiment, the laminated film for pressure oscillation can be used for defoaming from a viscous fluid (detailed definition will be described later) under a high temperature and / or high pressure environment.

  It is important that the pressure oscillation laminated film of the present invention has a metal layer from the viewpoint of improving the strength. Here, the metal layer refers to a layer in which 50% by mass or more is a metal component when all components constituting the layer are 100% by mass. One or more metal components may be used, and the amount of the metal component in the latter case is calculated by adding all the metal components.

  The metal component in the metal layer is not particularly limited as long as the effects of the present invention are not impaired, and can be arbitrarily selected. From the viewpoint of strength and production cost, copper, iron, and the like can be preferably used. Further, the metal layer may contain components other than the metal as long as the effects of the present invention are not impaired.

  Stainless steel (SUS) can be preferably used as a metal component having a plurality of types. SUS is an alloy containing iron as a main component, chromium and nickel as other metal components, and also contains carbon, and has excellent rust resistance. In addition, the above-mentioned SUS, carbon steel, and the like are included as components containing components other than the metal component. These all contain carbon and are excellent in strength.

  The thickness of the metal layer is not particularly limited as long as the effects of the present invention are not impaired, but is preferably 0.10 mm or more and 3.00 mm or less, and more preferably from the viewpoint of achieving both durability and function of the pressure oscillation laminated film. Is 0.50 mm or more and 2.00 mm or less. When the thickness of the metal layer is 0.10 mm or more, the deformation of the film can be reduced even when the pressure of the viscous fluid is high (for example, 5.0 MPa or more). The function as a laminated film can be exhibited. On the other hand, when the thickness of the metal layer is 3.00 mm or less, the flexibility of the pressure vibration laminated film is maintained to such an extent that pressure vibration can be efficiently transmitted to the viscous fluid. The function as a film can be sufficiently exhibited. In addition, as an example in which the pressure of the viscous fluid is 5.0 MPa or more, for example, a molten polymer in an extrusion step or the like can be mentioned.

  It is important that the laminated layer for pressure vibration of the present invention has a polymer elastomer layer from the viewpoint of improving its function. Here, the polymer elastomer layer means a layer in which 50% by mass or more is a polymer elastomer component when all components constituting the layer are 100% by mass. When the laminated layer for pressure vibration does not include the polymer elastomer layer, the function cannot be sufficiently exerted because the layer is not sufficiently deformed when vibration is applied, or the film is broken without being resistant to deformation.

  In the present invention, the polymer elastomer refers to a polymer substance having remarkable elasticity, more specifically, an elastic modulus (stress / strain) of 1 MPa or more and an elongation percentage when stretched immediately before breaking. Means a polymer substance of 100% or more. The elastic modulus and the elongation are measured by ASTM D412 (dumbbell test specifications).

  The polymer elastomer used for the polymer elastomer layer is not particularly limited as long as the effects of the present invention are not impaired, and examples thereof include a silicone rubber, a polymer having a styrene skeleton, a polymer having an olefin skeleton, a polymer having a polyester skeleton, and a polyurethane skeleton. And the like.

  In the pressure vibration laminated film of the present invention, the polymer elastomer layer preferably contains a fluorine-based polymer elastomer as a main component from the viewpoint of improving heat resistance. Here, the phrase "based on the fluoropolymer elastomer as a main component" means that the fluoropolymer elastomer is contained in an amount of more than 50% by mass when all components constituting the layer are 100% by mass. The fluorine-based polymer elastomer is a generic name of a synthetic elastomer in which a fluorine-containing olefin unit is repeatedly present in a polymer chain, and can be generally obtained by polymerizing a fluorine-containing olefin. Fluorine-based polymer elastomers are excellent in heat resistance, and although there are some differences depending on the type, they have such heat resistance that physical properties hardly change even at a high temperature of about 200 ° C.

  When the polymer elastomer layer contains a fluorine-based polymer elastomer as a main component, the heat resistance of the pressure vibration laminated film is improved. In other words, even when the pressure vibration laminated film is used for a viscous fluid at a high temperature (for example, 200 ° C. or higher), curing and dissolution of the polymer elastomer layer due to lack of heat resistance are reduced, and breakage or breakage is caused accordingly. Can be suppressed.

  Specific examples of the fluoropolymer elastomer include, for example, polytetrafluoroethylene (PTFE), polychlorotrifluoroethylene (PCTFE), polyvinylidene fluoride (PVDF), polyvinyl fluoride (PVF), and perfluoroalkoxy fluororesin (PFA) , Ethylene tetrafluoride-hexafluoropropylene copolymer (FEP), ethylene-tetrafluoroethylene copolymer (ETFE), ethylene-chlorotrifluoroethylene copolymer (ECTFE) and the like.

  In the pressure oscillation laminated film of the present invention, it is preferable that the fluoropolymer elastomer has a perfluoroalkyl vinyl ether skeleton from the viewpoint of improving the heat resistance and enabling use under higher temperature conditions. By adopting such an embodiment, the heat resistance of the pressure oscillation laminated film is further improved, and even when the film is in contact with a viscous fluid heated to 250 ° C. or more, curing and dissolution of the film, and accompanying damage can be reduced. .

  The fluoropolymer elastomer having a perfluoroalkyl vinyl ether skeleton is not particularly limited as long as the effects of the present invention are not impaired. For example, in addition to the above-mentioned PFA, a main chain portion of tetrafluoroethylene (TFE), perfluoromethyl vinyl ether And a perfluoroelastomer comprising a branched portion and a crosslinked portion of (PMVE). Among them, from the viewpoint of heat resistance, a perfluoroelastomer comprising a main chain portion of TFE, a branched portion of PMVE, and a crosslinked portion. Elastomers are preferred. As the perfluoroelastomer comprising a main chain portion of TFE, a branched portion of PMVE, and a crosslinked portion, for example, "Kalrez" (registered trademark) 7075UP (manufactured by DuPont Elastomer Co., Ltd.) or the like can be preferably used. This "Kalrez" (registered trademark) 7075UP is completely fluorinated and has a structure very similar to PTFE, so that it has extremely excellent heat resistance and hardens even when it comes into contact with a fluid having a temperature of 320 ° C. Can be used without dissolution. With such high heat resistance, for example, pressure vibration can be transmitted to a high-temperature viscous fluid such as a molten polymer in an extrusion process or the like.

  The laminated structure has a metal layer and a polymer elastomer layer and is not particularly limited as long as the effects of the present invention are not impaired, but a two-layer structure of a metal layer / a polymer elastomer layer is preferable from the viewpoint of simplicity of the structure. As other embodiments, a two-type three-layer configuration of a polymer elastomer layer / a metal layer / a polymer elastomer layer, a three-type three-layer configuration, and the like can be given. Further, in addition to the metal layer and the polymer elastomer layer, a film having high heat resistance, heat resistant rubber packing, or the like may be combined.

  The shape of the laminated film for pressure oscillation of the present invention is not particularly limited as long as the effects of the present invention are not impaired, but is preferably circular from the viewpoint of homogenizing the pressure during operation of the apparatus. By adopting such an aspect, by bringing the portion in contact with the vibration applying section described later closer to the center of the circle, the pressure on the pressure vibration laminated film can be made more uniform during operation of the apparatus, and the pressure vibration Deterioration and breakage due to unevenness of the laminated film can be reduced. In addition, when the pressure oscillation laminated film is circular, the closer the circle is to a perfect circle, the more preferable from the above viewpoint.

  It is important that the pressure vibration device of the present invention includes the pressure vibration laminated film of the present invention and a vibration applying unit. Since the vibration can be efficiently added to the viscous fluid by the pressure vibration device of such an aspect, it is possible to efficiently remove bubbles from the viscous fluid. Here, the vibration applying section refers to a portion that can vibrate the surface of the pressure vibration laminated film.

  The vibration applying unit is not particularly limited as long as it can apply vibration to the laminated film for pressure vibration, but it is preferable to use a vibration applying unit having a shape that does not cause bias in vibration. As a specific example of such an aspect, for example, when the shape of the pressure oscillation laminated film is a perfect circle, there is an aspect in which the shape of a portion in contact with the pressure oscillation laminated film is also a perfect circle.

  The type of the viscous fluid is not particularly limited as long as the effects of the present invention are not impaired.For example, papers, films, coating materials for coating on electronic materials, pastes such as adhesives and foods, inks, cream-like It can be a molten polymer or the like that is used as a raw material for cosmetics, films and fibers. Above all, from the viewpoint of utilizing the heat resistance and pressure resistance of the laminated film for pressure vibration of the present invention, the advantage of using the pressure vibration device of the present invention when applied to a molten polymer or the like as a raw material of a film or a fiber is increased. The pressure vibration device of the present invention can be used not only as a means for removing bubbles from a stored viscous fluid, but also as a means for removing bubbles from a viscous fluid in a production line.

  In the pressure vibration device of the present invention, it is preferable that the polymer elastomer layer of the pressure vibration laminated film is in contact with the vibration applying section from the viewpoint of durability of the pressure vibration laminated film. Here, the state where the polymer elastomer layer and the vibration applying section are in contact with each other includes not only a mode in which both are always in contact with each other, but also a mode in which the vibration applying section moves and the both repeatedly repeat collision. With such an embodiment, an impact or a pressure load applied from the vibration applying section to the pressure vibration laminated film is dispersed through the polymer elastomer layer and propagates to the metal layer. Therefore, abrasion of the metal layer is reduced, and the pressure vibration laminated film can be used for a relatively long time. When the pressure vibration laminated film has a two-layer structure composed of only a metal layer and a polymer elastomer layer, the polymer elastomer layer is brought into contact with the vibration applying section, so that the impact due to vibration or the like can be reduced. Deformation and breakage of the metal layer due to pressure load can be reduced.

  The defoaming method of the present invention is characterized in that bubbles are removed from a viscous fluid by the pressure vibration device of the present invention. In the present invention, the viscous fluid refers to the following (I) when a gas or an object is moving in the fluid (when there is a dynamic substance in the fluid), and when the fluid is moving in a pipe or a container. (When the fluid is dynamic), the following (II) is defined, and when it is a stationary fluid (when the fluid and the substances and bubbles contained therein are static), the following (III) is satisfied.

(I) The Reynolds number (Re) calculated by the following formula A is less than 2.0.
Formula A: Re = ρvL / μ = vL / ν
In Equation A, v is a relative average velocity (m / s) with respect to the flow of a gas or an object, L is a characteristic length (m), μ is a viscosity coefficient of a fluid (Pa · s), and ν is a kinematic viscosity coefficient ( m ² / s) and ρ is the density of the fluid (kg / m ³ ).

(II) The Reynolds number (Re) calculated by the following formula B is less than 2.0.
Formula B: Re = ρvD / μ = QD / νA
In Equation B, v is an average relative velocity (m / s) relative to an object such as a fluid wall, D is a hydraulic diameter (m), μ is a viscosity coefficient of a fluid (Pa · s), and ν is a kinematic viscosity coefficient ( m ² / s), ρ is the density of the fluid (kg / m ³ ), Q is the volume flow rate (m ³ / s), and A is the cut when pipes and vessels are cut along a plane perpendicular to the flow direction of the fluid. Area (m ² ). However, when the cross-sectional area when the pipe, the vessel, or the like is cut along a plane perpendicular to the flow direction is not constant, the position where the cross-sectional area becomes the largest is used as A.

(III) The zero shear viscosity η _{0 of the} fluid is greater than 1.0 (Pa · s).
Here, the zero shear viscosity η ₀ is a value obtained by extrapolating the shear rate to zero from a viscosity curve measured by a rotary viscometer. Since the zero shear viscosity η ₀ varies with temperature, the measurement is performed at the same temperature as when operating the pressure vibrator. As the rotary viscometer, for example, "HAAKE" (registered trademark) RS-600 (manufactured by Thermo Fisher Scientific) can be used. The measurement condition mode when the above-mentioned rotary viscometer is used is a steady rotation mode, and the sample stage and the cone can be appropriately selected according to the temperature of the measurement object.

  A viscous fluid has a high viscosity, so it is more difficult to remove bubbles inside the fluid than a low-viscosity fluid.However, by using the pressure vibration device of the present invention, it is possible to efficiently apply vibration to the fluid. it can. Therefore, air bubbles can be efficiently removed from a viscous fluid.

  In the defoaming method of the present invention, the polymer elastomer layer in the pressure vibration laminated film provided in the pressure vibration device has a fluorine-based polymer elastomer as a main component, and the temperature of the viscous fluid is 200 ° C or more and 320 ° C or less. Is preferred. When the polymer elastomer layer in the pressure vibration laminated film provided in the pressure vibration device has a fluorine-based polymer elastomer as a main component, the heat resistance and pressure resistance of the pressure vibration laminated film are improved. Therefore, the defoaming method of the present invention can be applied to a high-temperature and / or high-pressure viscous fluid such as a molten polymer which is a raw material of a film or a fiber. In addition, the above-mentioned thing can be used suitably for a fluoropolymer elastomer.

  Hereinafter, the manufacturing method of the laminated film for pressure vibration of the present invention will be specifically described with reference to the drawings, taking a circular shape as an example, but the laminated film for pressure vibration of the present invention is not limited thereto. .

  FIG. 1 is a schematic view showing a laminated film for pressure oscillation according to an embodiment of the present invention and a method for manufacturing the laminated film. First, the metal plate having the thickness and material described above is cut into a circular shape, and the distance from the center 2 (hereinafter, sometimes simply referred to as the center 2) of the obtained circular metal plate 1 is made uniform. Then, a plurality of holes 3 for screwing are formed in the circular metal plate 1. The number of screw holes 3 is not particularly limited as long as the effects of the present invention are not impaired, and can be appropriately determined according to the size of the metal plate, the specifications of the pressure vibrating device to be attached, and the like (the example in FIG. Pieces). However, from the viewpoint of homogenizing the pressure resistance, it is preferable that the screw holes 3 have a constant distance from the center and are equally spaced. Thereafter, the polymer elastomer sheet of the material described above is cut into the same shape as the circular metal plate 1, the obtained circular polymer elastomer sheet 4 is overlapped with the circular metal plate 1, and both are fixed with screws 5. Thus, the pressure vibration laminated film 8 (in FIG. 1, when cut through the center 2 and the screw 5) using the circular metal plate 1 as the metal layer 6 and the circular polymer elastomer sheet 4 as the polymer elastomer layer 7. A sectional view is shown.). When another film layer or packing layer is added to the pressure vibration laminated film 8, the base sheets of these can be similarly cut into the same shape and then fixed by overlapping. As means for bonding the circular metal plate 1 and the circular polymer elastomer sheet 4, a known adhesive or a clip can be used instead of the screw 5 described above. The laminated sheet 8 for pressure vibration may be obtained by fixing the elastomer sheet 4 to a device with screws or the like in a state of being simply overlapped.

  Next, a specific example of the pressure vibration device provided with the pressure vibration laminated film obtained by the above-described method will be specifically described with reference to the drawings, but the pressure vibration device of the present invention is not limited thereto.

  FIG. 2 is a schematic view showing the positional relationship between the pressure vibration laminated film and the vibration applying unit in the pressure vibration device according to one embodiment of the present invention. FIG. 2A is a schematic view of the pressure vibration laminated film and the vibration applying unit observed from the side, and FIG. 2B is a polymer elastomer layer of the pressure vibration laminated film and the vibration applying unit. The schematic diagram observed from the side is shown.

  In the pressure vibration device provided with the mechanism of the mode shown in FIG. 2, the vibration applying unit 9 repeats the reciprocating motion as shown in FIG. 2A to move the pressure vibration laminated film 8 up and down from the polymer elastomer layer 7 side. Accordingly, vibration can be applied to the fluid contained in a container or the like including the pressure vibration laminated film 8. At this time, from the viewpoint of equalizing the vibration of the fluid, the surface of the vibration mark lower portion 9 which is in contact with the pressure vibration laminated film is preferably circular like the pressure vibration laminated film 8. It is more preferable that the membrane 8 and the vibration mark lower part 9 are in contact with each other so that their centers overlap each other.

  Regarding the size of the pressure vibration laminated film 8 and the vibration mark lower part 9, the ratio of the area X of the portion where they contact each other and the area Y of the circle 10 drawn on the circular metal plate 1 so as to contact the screw 5 ( (Y / X) is preferably 1.2 or more. By adopting such a mode, the portion inside the circle 10 drawn on the circular metal plate 1 so as to be in contact with the screw 5 so as to be in contact with the screw 5 functions as a play portion. As a result, the deflection of the pressure vibration laminated film becomes sufficient, and it becomes easy to give sufficient vibration to the internal fluid.

  Hereinafter, the present invention will be described in more detail with reference to Examples, but the present invention is not limited thereto. The production, measurement, and evaluation of the pressure oscillation laminated film in each example and the pressure oscillation single layer film (hereinafter, both may be collectively referred to as a pressure oscillation film) in each comparative example are described below. The test was performed under the method and conditions shown below, and the pressure vibration device shown below was used.

[Manufacture and installation of pressure vibration membrane]
A metal plate was cut into a circle having a radius of 22.5 mm, and screw holes having a radius of 3 mm were formed at eight positions at an interval of 45 ° at a position of 18.5 mm from the center. Next, the polymer elastomer sheet having a thickness of 2.0 mm was similarly cut into a circle having a radius of 22.5 mm, and superposed on a metal plate having a screw hole. The obtained laminate is attached to a container having a circular opening having a radius of 12.5 mm, and having eight screw holes at 45 ° intervals at a position 18.5 mm from the center of the opening with eight screws. Then, a laminated film for pressure vibration having a metal layer and a polymer elastomer layer was obtained. Comparative Examples 1 to 3 have no metal layer, and Comparative Examples 4 to 6 do not have a polymer elastomer. It was a membrane.

[Pressure vibration device]
FIG. 3 shows a pressure vibration device used in each of the examples and the comparative examples. The pressure vibrating apparatus has a container 14 (volume: 0) having a laminated layer 8 for pressure vibration (a single layer structure in each comparative example) and a fluid inlet line 11 on the bottom surface and a fluid outlet line 12 and a pressure sensor 13 on the upper surface. .2l), and the fluid outlet line 12 on the upper surface was mounted at a position higher than the pressure sensor 13 in order to reduce a decrease in sensitivity due to air bubbles touching the pressure sensor 13. A vibration generator (not shown) including a vibration applying unit 9 is provided below the pressure vibration laminated film 8, and reciprocates up and down so that the vibration applying unit 9 contacts the pressure vibration laminated film 8. By the movement, pressure or vibration can be applied to the viscous fluid (only the movement near the fluid inlet line 11 and the fluid outlet line 12 is indicated by an arrow) filled in the container 14 via the pressure vibration laminated film 8. . The fluid inlet line 11 and the fluid outlet line 12 each have a valve (symbols 15 and 16), and the pressure in the container can be adjusted by opening and closing these while checking the pressure sensor 13. More specifically, the pressure can be increased by opening the valve 15 of the fluid inlet line 11 larger than the valve 16 of the fluid outlet line 12.

[Measurement and evaluation of each item]
(1) Heat resistance of the polymer elastomer layer A viscous fluid heated to 100 ° C was filled in a container (described in the section of [Pressure Vibration Apparatus]) on which a pressure vibration film was formed, and the temperature was maintained for 1 hour. After standing at normal pressure (0.1 MPa) as it was, the pressure vibration film was removed, and the presence or absence of a change in hardness of the polymer elastomer layer and the presence or absence of deformation due to dissolution were evaluated. When there was no change in hardness and no deformation due to dissolution, the same test was performed with the temperature of the viscous fluid set to 200 ° C. Even when the temperature of the viscous fluid was 200 ° C., if there was no change in hardness and no deformation due to dissolution, the same test was performed by pouring the viscous fluid heated to 300 ° C. From the obtained results, the heat resistance was evaluated in four stages of A to D as follows, and A to C were regarded as acceptable. When the difference in Shore A hardness before and after the test measured by a type A durometer (Asker rubber hardness meter type A (manufactured by Asker)) was 5% or more, it was judged as "change" and the deformation due to melting was determined. The presence or absence was visually confirmed. At the time of measurement, a melt of polystyrene was used as a viscous fluid heated to 100 ° C., a melt of polypropylene was used as a viscous fluid heated to 200 ° C., and a melt of polyethylene terephthalate was used as a viscous fluid heated to 300 ° C. Was.
A: In the test using a viscous fluid at 300 ° C., there was no change in hardness and no deformation due to melting.
B: In a test using a viscous fluid at 300 ° C., at least one of a change in hardness and a deformation due to melting occurred.

C: The test with a 300 ° C. viscous fluid could not be performed.
D: The test with a 200 ° C. viscous fluid could not be performed.

(2) Pressure resistance of membrane for pressure oscillation A container similar to that used in “(1) Heat resistance of polymer elastomer layer” is filled with a viscous fluid at 25 ° C., and the container is adjusted by adjusting the valve while maintaining the temperature. After the inside pressure was controlled at 5.0 MPa and allowed to stand for 1 hour, the pressure vibration membrane was removed. After that, the removed pressure vibration membrane was placed on a horizontal table with the surface in contact with the viscous fluid (hereinafter referred to as the measurement surface) facing upward, and the portion of the measurement surface where the bulge was largest was measured. The distance from the base surface was measured, and the value obtained by subtracting the thickness of the pressure vibration film before use from the measured value was defined as the degree of deformation (mm) of the pressure vibration film. From the degree of deformation of the pressure vibration film, the pressure resistance of the pressure vibration film was evaluated in the following four stages A to D, and A to C were accepted. The degree of deformation of the pressure vibration film was a value obtained by rounding off the first decimal place (the same applies to “(3) Vibration resistance of pressure vibration film”).
A: The degree of deformation of the pressure vibration film was 0 mm.
B: The degree of deformation of the pressure vibration film was 1 mm.
C: The degree of deformation of the pressure vibration membrane exceeded 1 mm, but no rupture of the membrane or leakage of the viscous fluid occurred during the test.
D: Leakage of the rupture membrane and / or viscous fluid occurred during the test.

(3) Vibration resistance of pressure vibration membrane A container similar to that used in “(1) Heat resistance of polymer elastomer layer” is filled with a viscous fluid at 25 ° C., and is under normal pressure (0.1 MPa). Then, a pressure vibration of 300 Hz was applied to the viscous fluid from the outside through a pressure vibration film by a pressure vibration device provided with a vibration applying unit that repeats a reciprocating motion up and down. After applying pressure vibration for 1 hour, the pressure vibration film was removed, and the degree of deformation (mm) of the pressure vibration film was determined in the same manner as in the method described in “(2) Pressure resistance of pressure vibration film”. . Based on the degree of deformation of the pressure vibration film, the vibration resistance of the pressure vibration film was evaluated in four stages of A to D as follows, and A to C were accepted.
A: The degree of deformation of the pressure vibration film was 0 mm.
B: The degree of deformation of the pressure vibration film was 1 mm.
C: The degree of deformation of the pressure vibration membrane exceeded 1 mm, but no rupture of the membrane or leakage of the viscous fluid occurred during the test.
D: Leakage of the rupture membrane and / or viscous fluid occurred during the test.

(4) Vibration propagation amount Pressure vibration is applied by the method described in “(3) Vibration resistance of pressure vibration film”, and pressure change is performed by a fluid pressure sensor (GP-M100 (manufactured by Keyence Corporation)) attached to the container. Was confirmed, and the amount of Hz vibration propagation was evaluated in the following four stages of A to D (A to C were accepted).
A: The pressure change exceeded 0.5 MPa in absolute value conversion.
B: Pressure change in absolute value conversion was more than 0.3 MPa and 0.5 MPa or less.
C: Pressure change in absolute value conversion was more than 0.1 MPa and 0.3 MPa or less.
D: Pressure change was 0.1 MPa or less in absolute value conversion, or measurement was impossible due to rupture of the membrane during the test.

[Metal layer, polymer elastomer layer]
SUS304 was used as a material for obtaining a metal layer. The following materials were used as materials for obtaining the polymer elastomer layer.

(Polymer elastomer 1 (E1))
Copolymer of polytetrafluoroethylene and perfluoromethyl vinyl ether (fluoropolymer elastomer having a perfluoroalkyl vinyl ether skeleton, "Kalrez" (registered trademark) 7075UP, manufactured by Dupont Elastomer Co.)
(Polymer elastomer 2 (E2))
Copolymer of polyvinylidene fluoride and hexafluoropropylene (fluoropolymer elastomer having no perfluoroalkylvinylether skeleton, "Viton" (registered trademark) F type manufactured by Dupont Elastomer Co., Ltd.)
(Polymer elastomer 3 (E3))
Block copolymer of polybutylene terephthalate and polyether (polymer elastomer other than fluoropolymer elastomer, "Hytrel" (registered trademark) 2751 manufactured by Toray DuPont).

(Example 1)
According to the procedure described in the section of [Production and installation of pressure vibration film], the pressure vibration laminated film having a metal layer thickness of 1.00 mm and a polymer elastomer layer made of polymer elastomer 1 The sample was attached to a container so that the layer was on the inside (fluid side), and the container was filled with a viscous fluid to evaluate each item. Table 1 shows the evaluation results.

(Examples 2 to 8, Comparative Examples 1 to 6)
Each evaluation was performed in the same manner as in Example 1 except that the layer configuration of the pressure vibration film, the method of attaching the film to the container, the thickness of the metal layer, and the polymer elastomer in the polymer elastomer layer were as shown in Table 1. . Table 1 shows the evaluation results.

  The layer configuration of the pressure oscillation membrane is described in order from the layer located on the fluid side. In Comparative Examples 4 to 6, since the polymer elastomer layer was not present, the heat resistance of the polymer elastomer layer was not evaluated.

  ADVANTAGE OF THE INVENTION According to this invention, the laminated film for pressure vibration which can withstand use under high temperature and / or high pressure environment, it can be used even under high temperature and / or high pressure, and it is easy to save space by upsizing and miniaturization by enlarging a container. And a defoaming method using the same. The laminated film for pressure vibration of the present invention, the pressure vibration device, and the defoaming method, paper or film, coating material for coating electronic materials, pastes such as adhesives and foods, ink, cream-like cosmetics, It can be suitably used as a means for removing bubbles from a molten polymer or the like which is a raw material of a film or fiber.

DESCRIPTION OF SYMBOLS 1 Circular metal plate 2 Center of circular metal plate 3 Hole for screw 4 Circular polymer elastomer sheet 5 Screw 6 Metal layer 7 Polymer elastomer layer 8 Pressure vibration laminated film 9 Vibration applying unit 10 Circular metal so as to be in contact with screw Circle drawn on a plate 11 Fluid inlet line 12 Fluid outlet line 13 Pressure sensor 14 Vessel 15 Fluid inlet line valve 16 Fluid outlet line valve

Claims (8)

  A laminated film for pressure oscillation, comprising a metal layer and a polymer elastomer layer.   The laminated film for pressure oscillation according to claim 1, wherein the thickness of the metal layer is 0.10 mm or more and 3.00 mm or less.   3. The laminated film for pressure vibration according to claim 1, wherein the polymer elastomer layer contains a fluorine-based polymer elastomer as a main component.   The laminated film for pressure vibration according to claim 3, wherein the fluoropolymer elastomer has a perfluoroalkyl vinyl ether skeleton.   A pressure vibration device, comprising: the pressure vibration laminated film according to claim 1; and a vibration application unit.   The pressure vibration device according to claim 5, wherein the polymer elastomer layer of the pressure vibration laminated film is in contact with the vibration applying unit.   A defoaming method comprising removing bubbles from a viscous fluid by the pressure vibration device according to claim 5. The polymer elastomer layer in the pressure oscillation laminated film provided in the pressure oscillation device has a fluorine-based polymer elastomer as a main component, and the temperature of the viscous fluid is 200 ° C or more and 320 ° C or less. Defoaming method described in 1.

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