JP2020100562A - Translucent material - Google Patents

Abstract

To provide a translucent material having anti-fouling nature to various materials.SOLUTION: A translucent material includes a substrate 1 made of a glass-based material and a ceramic layer 2 tightly attached to the substrate 1. The ceramic layer 2 contains nitrogen and a 4A group element together with yttrium oxide as a base material and thus the translucent material has anti-fouling nature to at least one of animal oil, vegetable oil, and mineral oil.SELECTED DRAWING: Figure 1

Description

The present invention relates to a translucent material, a low adhesion material, and a molding member having a base and a ceramic layer. The term "translucent" means the property of transmitting light through a substance (reference: JIS R 1600). In the present application documents, “translucency” includes “transparent state”.

Patent Document 1 discloses a molding die provided with a metal base material and a ceramic layer provided on the base material, containing a yttrium oxide, nitrogen, and a cation of a Group 4A element and in contact with a molded product. (See paragraph [0006] of Patent Document 1). It is disclosed that a ceramic layer containing yttrium oxide provided on the surface of the mold improves the mold releasability and antifouling property of the mold (see paragraph [0039] of Patent Document 1). A resin used in a molding operation is exemplified as an object of releasability and antifouling property (see paragraph [0056] of Patent Document 1).

JP, 2015-214070, A

The molding die described in Patent Document 1 is made of a material in which a ceramic layer is formed on a metal base material. Due to this, according to the forming die described in Patent Document 1, firstly, it is difficult to reduce the weight of the forming die. Secondly, the material forming the molding die described in Patent Document 1 cannot be applied to applications requiring translucency.

The present invention has been made in view of the above problems. A first object of the present invention is to provide a low-adhesion material and a molding member which have low adhesion and antifouling property to various materials including resins used in a molding operation, and which are preferably lightweight. That is. A second object of the present invention is to provide a low adhesion material and a translucent material that can be used as a molding member.

The translucent material according to the present invention includes a base portion made of a glass-based material (glass-based material) and a ceramic layer provided on the surface of the base portion in a layered manner. The ceramic layer is yttrium oxide (Al ₂ It is a light-transmitting material containing O ₃ ) as a base material and containing nitrogen and a cation of a Group 4A element.

The translucent material according to the present invention has a mode in which, in the translucent material described above, the glass-based material is heat-resistant glass.

The translucent material according to the present invention has a mode in which, in the translucent material described above, the glass-based material is tempered glass.

The translucent material according to the present invention has a mode in which, in the translucent material described above, the ceramic layer directly adheres to the base portion.

The translucent material according to the present invention has a mode in which, in the translucent material described above, the glass-based material is quartz glass.

The translucent material according to the present invention has a mode in which the ceramic layer has low adhesion to at least one of thermosetting resin, animal oil, vegetable oil or mineral oil.

The translucent material according to the present invention has a mode in which the translucent material described above further includes an intermediate layer provided between the ceramic layer and the base made of quartz glass.

The low-adhesion material according to the present invention is a low-adhesion material having low adhesion to a material, and includes a base part made of an inorganic material, and a ceramic layer provided on the surface of the base part in layers. The ceramic layer is a low-adhesion material that is based on yttrium oxide, contains nitrogen and cations of the Group 4A element, and is in contact with the raw material.

The low adhesion material according to the present invention has a mode in which, in the low adhesion material described above, the ceramic layer directly adheres to the base portion.

The low adhesion material according to the present invention has a mode in which the low adhesion material described above further includes an intermediate layer provided between the ceramic layer and the base portion.

The low adhesion material according to the present invention has a mode in which, in the low adhesion material described above, the material contains at least one of a thermosetting resin, animal oil, vegetable oil or mineral oil.

The molding member according to the present invention is a molding member that comes into contact with a material used in manufacturing a molded product, and is provided in a layered form on a base portion made of an inorganic material and on the surface of the base portion. A ceramics layer is a molding member that includes yttrium oxide as a base material and that contains nitrogen and cations of a Group 4A element.

The molding member according to the present invention has a mode in which, in the above-mentioned molding member, the ceramic layer is directly adhered to the base portion.

The molding member according to the present invention has a mode in which, in the molding member described above, an intermediate layer provided between the ceramic layer and the base portion is further provided.

The molding member according to the present invention has a mode in which the material contains at least one of thermosetting resin, animal oil, vegetable oil, or mineral oil.

According to the present invention, firstly, a low-adhesion material and a molding member, which have low adhesion and antifouling property to various materials including resins used in a molding operation, and are preferably lightweight, are provided. can do. Secondly, it is possible to provide a low adhesion material and a translucent material that can be used as a molding member.

(1) is a figure which shows the cross section of the translucent material, the low adhesiveness material, and the molding member which concern on each Example of this invention, (2) is the translucent material which concerns on the modification of this invention, and low. It is a figure which shows the cross section of an adhesive material and a molding member. It is a figure which shows the result of adhesiveness evaluation of the ceramics layer on glass in the translucent material which concerns on one Example of this invention. (1) And (2) is a figure which shows the result of having respectively measured the surface hardness of the ceramics layer on heat-resistant glass and tempered glass in the translucent material which concerns on one Example of this invention. It is a figure which shows the change of the light transmittance by the ceramic layer thickness in the translucent material which concerns on one Example of this invention. It is a figure which shows the three-point bending strength targeting both the double-sided film-formed product which is the translucent material which concerns on one Example of this invention, and an untreated product. It is a figure which shows the result of having measured the adhesive force about the composite member in which the ceramics layer contained in this invention was formed in the surface, and the material which concerns on the comparative example which has a hard chrome plated surface. 3 is a photograph showing an inner bottom surface of a cavity of a molding member after a molding operation is performed a predetermined number of times using a composite member having a ceramic layer included in the present invention formed on the surface thereof. It is a photograph which shows the inner bottom face in the cavity of the molding member after performing the molding operation a predetermined number of times using the molding member according to the comparative example. (1) is a photograph showing the state of rubbing the evaluation surface of the sample using a wiping paper, (2) is the evaluation surface of the sample, (3) is a photograph showing the step of applying the evaluation oil to the sample and heating it, and It is a figure. (1) and (2) are photographs showing a surface before wiping and a surface after wiping, respectively, of two types of samples having fingerprints on the surfaces. (1) and (2) are photographs respectively showing a surface before wiping and a surface after wiping after heating and cooling two kinds of samples having animal oil adhered to the surfaces thereof. (1) and (2) are photographs respectively showing a surface before wiping and a surface after wiping after heating and cooling two kinds of samples having vegetable oil adhered to the surfaces. (1) and (2) are photographs respectively showing a surface before wiping and a surface after wiping after heating and cooling two kinds of samples having mineral oil adhered to the surfaces thereof.

Embodiments of the present invention will be described below. In addition, the same reference numerals may be given to the same portions or corresponding portions, and the description thereof may not be repeated.

In the embodiments described below, when referring to the number, amount, etc., the scope of the present invention is not necessarily limited to the number, amount, etc., unless otherwise specified. Further, in the following embodiments, each constituent element is not necessarily essential to the present invention unless otherwise specified.

In the present application, the wording "low adhesion" means the following two things. Firstly, "a member made of a certain material (for example, a molding member) is prevented from contacting an object (for example, a molded product) to attach dirt caused by the object to the surface of the member. It means "the property of". Secondly, it means "the property that the dirt attached to the surface of the member is easily separated (removed) from the surface of the member". Therefore, a material exhibiting low adhesion to a certain object has antifouling property to the object. In other words, a certain material (substance) being a low adhesion material means that the material (substance) is an antifouling material.

(Example 1)
(Translucent Material According to Example 1)
A translucent material according to Example 1 of the present invention and its modification will be described with reference to FIG. The translucent material according to Example 1 includes a base 1 made of a glass-based material (glass-based substance), and a ceramic layer 2 provided in layers above (on the surface of) the base 1. Therefore, the translucent material according to Example 1 is a composite material.

Examples of the glass-based material that constitutes the base 1 include the following materials. First, soda lime glass (soda lime glass) can be used. Secondly, aluminosilicate glass can be used. Third, borosilicate glass can be used. Fourth, quartz glass can be used. When quartz glass is used, it is preferable to form an intermediate layer between the base 1 and the ceramic layer 2 (described later).

The glass-based materials that form the base 1 can be classified as follows. First, it is a tempered glass using soda lime glass and aluminosilicate glass. The tempered glass is obtained by processing soda lime glass using the air-cooled tempering method. A tempered glass is obtained by treating an aluminosilicate glass by an ion exchange method using a molten potassium salt containing potassium ions, an aqueous solution, or the like. Secondly, heat-resistant glass such as Tempax Float (registered trademark) mainly using borosilicate glass. Third is quartz glass.

The ceramics layer 2 uses yttrium oxide (Y ₂ O ₃ ) as a base material and contains nitrogen and cations of the 4A group element. Hereinafter, the material forming the ceramics layer 2 may be referred to as “a material containing Y ₂ O ₃ as a main component”.

As shown in FIG. 1(1), the base portion 1 made of a glass-based material and the ceramic layer 2 are in direct contact with each other. When the difference between the coefficient of thermal expansion of the glass-based material forming the base 1 and the coefficient of thermal expansion of the ceramics layer 2 is small, the base 1 and the ceramics layer 2 may be in direct contact with each other.

The thermal expansion coefficient α of the heat resistant glass is about 3.3×10 ⁻⁶ . The ceramic layer 2 uses yttrium oxide as a base material. The coefficient of thermal expansion α of the ceramic layer 2 using yttrium oxide as a base material is 6.5×10 ⁻⁶ . If the difference between the thermal expansion coefficient α of the glass-based material forming the base 1 and the thermal expansion coefficient α of the ceramics layer 2 is within this range, the base 1 and the ceramics layer 2 can be directly adhered to each other. ..

A method of manufacturing the translucent material shown in FIG. 1A will be described. First, the glass-based material forming the base 1 is prepared. When the base 1 needs to have a three-dimensional shape such as unevenness, the three-dimensional shape is formed in advance by using a cutting process, an etching process, or the like.

Next, the ceramics layer 2 is formed on the upper surface of the base 1. As a method of forming the ceramics layer 2 on the upper surface of the base 1, a physical vapor deposition method (PVD: Physical Vapor Deposition) can be used. PVD includes vacuum evaporation method, electron beam evaporation method, sputtering method, plasma spraying method, ion implantation method, plasma ion implantation method and ion plating method. A chemical vapor deposition method or a sol-gel method may be used.

A translucent material according to a modification of the first embodiment of the present invention will be described with reference to FIG. FIG. 1B shows a translucent material according to a modified example of Example 1, in which the intermediate layer 3 is provided between the base 1 and the ceramic layer 2. The translucent material according to this modification includes a base portion 1 made of a glass-based material, a layered intermediate layer 3 that adheres to the upper surface of the base portion 1, and a layered ceramic layer that adheres to the upper surface of the intermediate layer 3. 2 and.

The base 1 is made of quartz glass. The coefficient of thermal expansion α1 of quartz glass is about 0.55×10 ⁻⁶ . The coefficient of thermal expansion α2 of the ceramics layer 2 is 6.5×10 ⁻⁶ . If the difference between the thermal expansion coefficient α1 of the glass-based material forming the base 1 and the thermal expansion coefficient α2 of the ceramics layer 2 is large to this extent, the thermal contraction between the base 1 and the ceramics layer 2 is relaxed. It is preferable to provide the intermediate layer 3 for this purpose. As the material of the intermediate layer 3, it is preferable to use a glass-based material having a thermal expansion coefficient α3 that is an intermediate value between the thermal expansion coefficient α1 of the base 1 and the thermal expansion coefficient α2 of the ceramics layer 2. It is also possible to use a translucent ceramic material having a thermal expansion coefficient α3.

(Evaluation of translucent material 1: adhesion)
With reference to FIG. 2, the result of evaluating the adhesion (adhesion) of the translucent material according to Example 1 will be described. The high speed steel used in the comparative example shown at the right end of FIG. 2 is a steel-based material used as a material for tools, dies and the like. Adhesion between a layer made of a material containing Y ₂ O ₃ as a main component (hereinafter, appropriately referred to as “ceramic layer included in the present invention” or “ceramic layer”) and a glass-based material, and a ceramic layer and a steel-based material. Compare with the adhesiveness of.

As shown in FIG. 2, the adhesion between the ceramic layer and the tempered glass is about 1.57 times that of the ceramic layer and the steel-based material. The adhesion between the ceramics layer and the heat-resistant glass is about 1.88 times that of the ceramics layer and the steel-based material. From the above results, it can be said that the adhesion between the ceramic layer and the glass-based material is greater than the adhesion between the ceramic layer and the steel-based material.

The evaluation of adhesion was performed by a scratch test. In the scratch test, the following operations are performed simultaneously. First, a stylus is pressed against an object placed on the XY plane. Secondly, the load applied to the object from the tip of the stylus is increased over time. Thirdly, the stylus is vibrated in the Y direction. Fourth, move the stylus along the X direction. In summary, while vibrating the stylus in the Y direction, the load applied to the stylus is increased, and the tip of the stylus scratches the object and advances along the X direction. The load applied to the stylus when the ceramic layer is peeled off is determined as the critical load value. The larger the critical load value, the greater the adhesion.

The conditions of the scratch test are as follows.
Testing device: Ultra thin film scratch tester CSR-2000 manufactured by Resca Co., Ltd.
Excitation level: 100 μm
Measurement end time: 120s
Load at the end of measurement: 600mN
Sampling cycle: 3600Hz
Spring constant: 100 gf/mm (0.98 N/mm)
Stylus radius: 15 μm

(Evaluation of translucent material 2: surface hardness)
The surface hardness of the translucent material according to Example 1 will be described with reference to FIG. FIG. 3(1) shows the surface hardness of the ceramic layers when the ceramic layers having different layer thicknesses are formed on the heat-resistant glass (base). Compared with the surface strength of the heat-resistant glass itself, a surface hardness of 1.50 times was obtained when the layer thickness of the ceramic layer was 0.18 μm. When the thickness of the ceramic layer was 0.53 μm, a surface hardness 1.82 times that of the ceramic layer was obtained. When the layer thickness of the ceramic layer was 0.987 μm, a surface hardness of 1.80 times was obtained. From the above results, it can be said that the surface hardness of the ceramic layer when formed on the heat-resistant glass is significantly improved as compared with the surface strength of the heat-resistant glass itself.

FIG. 3(2) shows the surface hardness of the ceramic layer when the ceramic layers having different layer thicknesses are formed on the tempered glass (base). Compared with the surface strength of the tempered glass itself, when the layer thickness of the ceramics layer was 0.09 μm, a surface hardness of 1.09 times was obtained. When the layer thickness of the ceramics layer was 0.184 μm, 1.21 times the surface hardness was obtained. When the thickness of the ceramic layer was 0.349 μm, a surface hardness of 1.30 times was obtained. From the above results, it can be said that the surface hardness of the ceramic layer when formed on the strengthened glass is improved as compared with the surface strength of the strengthened glass itself.

The conditions for measuring the surface hardness are as follows. Nanoindentation was performed from the layer surface, and Young's modulus and hardness were calculated from the obtained load displacement curve. The Tanaka method was applied as the indenter tip correction method. As the unloading fitting method, the upper portion from 70% to 90% was linearly approximated to form a tangent line.
(1) Measuring device: manufactured by Elionix Co., Ltd. Ultra-fine indentation hardness tester NT-1100a
(2) Indenter: Trigonal pyramid indenter Berkovich
(3) Pushing load: 5mN

(Evaluation of translucent material 3: light transmittance)
The light transmittance of the translucent material according to Example 1 will be described with reference to FIG. The following three types were used as the translucent material.
(1) Heat-resistant glass (thickness 1.1 mm)
(2) Sample S1
Composite material in which a 1 μm thick ceramic layer is formed on 1.1 mm thick heat-resistant glass
(3) Sample S2
Composite material in which 0.5 μm thick ceramic layer is formed on 0.7 mm thick tempered glass

FIG. 4 shows the light transmittances of light rays having a wavelength of 300 nm to 800 nm for the heat-resistant glass, the sample S1, and the sample S2, respectively. A light ray having a wavelength of 300 nm to 800 nm includes most of visible light rays and a partial region of near ultraviolet rays. The following two things are found from the results shown in FIG. First, the light transmittance of the sample S1 and the light transmittance of the sample S2 for near-ultraviolet light are each slightly smaller than the light transmittance of the heat-resistant glass. Secondly, with respect to most of the visible light, the light transmittance of the sample S1 and the light transmittance of the sample S2 have almost the same transmittance as that of the heat-resistant glass. Therefore, it is judged that both the sample S1 and the sample S2 can be used for applications in which visible light needs to be transmitted.

The conditions for measuring the light transmittance are as follows.
measuring device:
UV/Visible/Near Infrared Spectrophotometer Shimadzu Corporation SolidSpec-3700/3700DUV
Wavelength range: 175 to 2600 nm (actual measurement wavelength range is 300 to 800 nm)

(Evaluation of translucent material 4: bending strength)
The results of the three-point bending strength test for the translucent material according to Example 1 will be described with reference to FIG. The following two types were used as the sample translucent material.
(1) Heat-resistant glass (75 x 25 x 1.1 mm: untreated product)
(2) Sample S3
A composite material in which a 1.3 μm thick ceramic layer is formed on both sides of a product equivalent to the heat-resistant glass of (1)

For the heat-resistant glass (untreated product) and the sample S3 of (1) above, the bending strength test method (three-point bending strength test) of the fine ceramics of JIS R 1601 was applied (some conditions are Changed), and a bending strength test was performed. As shown in FIG. 5, the average value of the bending strength of the sample S3 was about 2.3 times the average value of the bending strength of the heat resistant glass. From the above results, it can be said that the bending strength of the composite material in which the ceramic layer is formed on the heat-resistant glass is improved as compared with the bending strength of the heat-resistant glass itself.

The conditions of the bending strength test are as follows. For other conditions, the bending strength test method for fine ceramics specified in JIS R 1601 was followed.
(1) Crosshead speed: 10 mm/s
(2) Tip of support tool R1: 0.3 mm

(Evaluation 5 of translucent material: abrasion resistance)
The results of the reciprocating friction and abrasion test on the translucent material according to Example 1 will be described. The following two types were used as the sample translucent material.
(1) Heat-resistant glass (75 x 25 x 1.1 mm thick)
(2) Sample S4
A composite material in which a ceramic layer with a thickness of 0.1 μm is formed on both sides of a product equivalent to the heat-resistant glass of (1)

The kinetic friction coefficient and the reciprocating friction and abrasion test were conducted on the heat-resistant glass (1) and the sample S4. As a result, the following values were obtained. The dynamic friction coefficient of the heat-resistant glass was 0.26, and the dynamic friction coefficient of Sample S4 was 0.24. The heat-resistant glass was worn about 150 times, and the sample S4 was worn more than 1,000 times. From the above results, firstly, it can be said that the dynamic friction coefficient of the heat-resistant glass itself and the dynamic friction coefficient of the composite material in which the ceramic layer having a thickness of 0.1 μm is formed on the heat-resistant glass are substantially equal. Secondly, it can be said that the wear resistance of the composite material in which the ceramic layer having a thickness of 0.1 μm is formed on the heat resistant glass is significantly improved as compared with the wear resistance of the heat resistant glass itself.

The conditions of the reciprocating friction and wear test are as follows.
measuring device :
Reciprocating abrasion tester HEIDON TRIBOGEAR 14FW manufactured by Shinto Scientific Co., Ltd.
Type of mating material: Alumina sphere Diameter of mating material: φ5 mm
Contact load of mating material: 20 gf
Sliding distance: 5 mm (reciprocating 10 mm)
Sliding speed: 10 mm/s
Number of slides: 1000 times (total length 10 m) or until layer peeling

(Low adhesion of ceramics layer)
The low adhesion of the ceramic layer 2 (see FIG. 1) made of a material containing Y ₂ O ₃ as a main component will be described. The results obtained by using a sample in which the base 1 is a metal-based material instead of the sample in which the base 1 is an inorganic-based material including a glass-based material will be described. The low adhesion and antifouling property of the ceramic layer 2 formed of a material containing Y ₂ O ₃ as a main component are characteristics of the ceramic layer 2 itself. Based on this, the low adhesion and antifouling property of the ceramic layer 2 are explained regardless of the type of the base part 1. This also applies to the following description.

With reference to FIG. 6, description will be made on the improvement of low adhesion by the ceramic layer formed of a material containing Y ₂ O ₃ as a main component. FIG. 6 shows a result of performing a molding operation for a mold having a ceramic layer included in the present invention formed on its surface and a mold according to a comparative example (a metal base material subjected to hard chrome plating). Show. Specifically, FIG. 6 shows a resin molding operation performed a predetermined number of times for a molding die having a ceramic layer formed of a material containing Y ₂ O ₃ as a main component on its surface and a molding die according to a comparative example. To do. The experimental results of evaluating the low adhesion by measuring the adhesion (release force) between the molding die and the cured resin each time the resin molding operation is performed are shown. The materials used in the experiments, including the experiments described below, are thermosetting resins (specifically, epoxy resins).

According to FIG. 6, the mold having the ceramic layer formed of the material containing Y ₂ O ₃ as the main component on the surface has reduced adhesion as compared with the mold according to the comparative example. Specifically, the adhesiveness of the molding die of the present invention has a size of about 0.43 of the adhesiveness of the molding die according to the comparative example at the time of performing the molding operation of 250 shots (250 times). Therefore, it can be said that the translucent material having the ceramic layer 2 shown in FIG. 1 formed on its surface has excellent low adhesion to the thermosetting resin.

(Antifouling property of ceramic layer-1)
The improvement of the antifouling property according to the embodiment of the present invention will be described with reference to FIGS. FIG. 7 is a photograph showing the bottom surface of the molding die after performing a molding operation 1000 times using the molding die having the ceramic layer included in the present invention formed on the surface thereof. FIG. 8 is a photograph showing the bottom surface of the molding die after 300 molding operations were performed using the molding die according to the comparative example shown in FIG.

Referring to FIGS. 7 and 8, in the molding die (FIG. 7) having the ceramic layer included in the present invention formed on its surface, no noticeable stain is observed even after 1000 molding operations. On the other hand, in the molding die according to the comparative example (FIG. 8), after 300 molding operations, the resin is confirmed to be fixed in the portion A, and the resin flash is accumulated in the portion B. In addition, discoloration is observed on the entire bottom surface of the cavity. From the above results, it can be said that the translucent material having the ceramic layer formed on the surface thereof, which is included in the present invention, has excellent antifouling property against the thermosetting resin.

(Evaluation of antifouling property of ceramics layer)
The improvement of antifouling property according to the embodiment of the present invention will be described with reference to FIGS. The following description relates to antifouling properties against animal oils, vegetable oils and mineral oils. The following four types of oils were used as evaluation oils.
(a) Evaluation oil A: animal oil; fats and oils derived from the human body (evaluate the fingerprint adhesion state)
(b) Evaluation oil B: animal oil; beef tallow of domestic cattle
(c) Evaluation oil C: vegetable oil; canola oil
(d) Evaluation oil D: Mineral oil; Industrial lubricating oil (SHELL TONNA (registered trademark) S3 M 68)

(Evaluation of antifouling property of ceramic layer-1)
The following two types of materials were used as samples: a glass plate made of heat-resistant glass and a glass plate made of the same kind of heat-resistant glass, on the surface of which a ceramic layer was formed.
(1) Sample S5: heat-resistant glass itself (comparative example)
(2) Sample S6: The following evaluation experiment was performed using the composite material evaluation oil A (oil and fat derived from the human body) in which a ceramic layer was formed on the surface of heat-resistant glass. First, the fingers of the hand were pressed against the surface of the sample S5 and the surface of the sample S6, and the evaluation oil A was attached to the surface of the sample S5 and the surface of the sample S6. Next, using Kimwipe (registered trademark), which is a kind of paper wiper, the surface of each sample was pressed against the paper wiper and simultaneously rubbed. Next, the degree of remaining fingerprints attached to the surface of each sample was observed. The fingerprints attached to the surface of each sample were generated by depositing the oils and fats derived from the human body on the surface of each sample. These operations were performed at room temperature. In this application, the term "room temperature" means "ambient temperature in the range of 15°C to 35°C" (see JIS K 6900).

As a method of wiping off the adhered oils, each evaluation oil was wiped off as follows. First, as shown in FIG. 9(1), a wiping paper 4 was prepared by stacking two paper wipers each of which was folded in four. Next, the evaluation surfaces 6 of the two samples 5 to be compared were opposed to each other, and the wiping paper 4 was sandwiched between the evaluation surfaces 6 (see the left side of FIG. 9(1)). Next, the wiping paper 4 was pulled while gently pressing the opposite surface of the evaluation surface 6 of the two samples 5 with a finger (see the right side of FIG. 9(1)). The thick arrow shown on the right side of FIG. 9(1) indicates the relative movement direction of the two samples 5 with respect to the wiping paper 4.

By the work up to this point, the evaluation surfaces 6 of the two samples 5 were simultaneously rubbed by the wiping paper 4. In other words, the adhered matter adhered to each evaluation surface 6 was wiped off by the wiping paper 4 according to the strength of the adhesion between each evaluation surface 6 and the adhered matter. This operation was repeated 5 times for the two samples 5 to be compared. These operations were performed at room temperature.

Among the evaluation experiments including the operations described above, the results obtained by performing the evaluation experiments including the operation of wiping the evaluation oil A (animal oil; fats and oils derived from the human body) are shown below.
(a) When using the evaluation oil A (animal oil; fat and oil derived from the human body) When comparing FIGS. 10(1) and 10(2), the surface of the sample S6 after wiping is more than the surface of the sample S5 after wiping In that case, the fingerprints are clearly wiped off. Therefore, in the case of targeting fats and oils (animal oil) derived from the human body at room temperature, the antifouling property of the sample S6 is superior to the antifouling property of the sample S5.

(Evaluation of antifouling property of ceramics layer-2)
As samples, the following two types of composite materials were used in which the surface layer of a plate-shaped steel material was subjected to different surface treatments to form a surface layer.
(1) Sample S7: Composite material in which an HCr plating layer is formed on the surface of a steel plate (comparative example)
(2) Sample S8: Composite material in which a ceramic layer is formed on the surface of a steel plate

With reference to FIG. 9, an antifouling property evaluation experiment shown in the example of the present invention will be described. By performing an evaluation experiment using the evaluation oils B to D as described below, the antifouling property was evaluated for the two types of samples S7 and S8. The following series of operations was performed at room temperature.
(1) The evaluation surface 6 (see FIGS. 9(1) and 9(2)), which is one of the wide surfaces of the samples S7 and S8, was washed with acetone.
(2) Evaluation oil was applied to a half area (hereinafter referred to as “application area 7”) on the evaluation surface 6 of each of the samples S7 and S8 using the application jig 8 made of a thin glass epoxy substrate. After that, the applied oil was spread using the application jig 8 (see FIGS. 9(2) and 9(3)).
(3) Using the hot plate 9, the samples S7 and S8 were heated to 180° C., and the heated state of the samples S7 and S8 was maintained for 3 minutes (see FIG. 9(3)).
(4) Samples S7 and S8 were left at room temperature and cooled to room temperature.
(5) The coating area 7 coated with the evaluation oil on the evaluation surfaces of the samples S7 and S8 was observed from the following viewpoint. The viewpoint is the degree to which the evaluation oil is repelled by the HCr plating layer and the ceramics layer formed as the surface layer in the coating areas 7 of the samples S7 and S8. This point of view and the point of view of the extent to which the surface layer is wetted by each evaluation oil in the coating region 7 of the sample S7 (comparative example) and the coating region 7 of the sample S8 have different expressions but are substantially the same.
(6) After observing the above (5), using the paper wiper by the method shown in FIGS. 9(1) and 9(2), the surface of the sample S7 (comparative example) and the surface of the sample S8. Rubbed at the same time. In other words, the respective evaluation oils adhered to the application area 7 of the sample S7 and the application area 7 of the sample S8 were wiped off at the same time. Then, the extent to which each evaluation oil remained in the application area 7 of the sample S7 and the application area 7 of the sample S8 was observed.

The results obtained by conducting an evaluation experiment including the above-mentioned steps (1) to (6) are shown below.
(b) When evaluation oil B (animal oil; beef tallow of domestic beef (Japanese beef)) is used
(i) The degree to which the surface layer repels the evaluation oil The adhesion state of the evaluation oil B (beef tallow) on the surfaces of the sample S7 (comparative example) and the sample S8 after cooling shown in FIG. 11(1) Are compared. Beef tallow has a melting point of 40° C. to 56° C. and is higher than room temperature (“oil and fat that scientifically tastes” [online], [searched on March 12, 2016], Nippon Suisan Co., Ltd., Internet <URL: http://www.nissui.co.jp/academy/taste/15/>). Therefore, at room temperature, beef tallow shows a coagulated form.

In a state where the samples S7 and S8 are heated to 180° C. using a hot plate, beef tallow is melted to have fluidity. It is considered that FIG. 11(1) shows a state in which the melted beef tallow is cooled and solidified while being repelled (or not repelled) by the surface. Therefore, by comparing the surface of the sample S7 (comparative example) shown in FIG. 11A and the surface of the sample S8, it is possible to compare the degree to which the melted beef tallow is repelled by the surface.

The following can be said based on the result of comparing the surface of the sample S7 (comparative example) and the surface of the sample S8 shown in FIG. 11(1). First, the surface of Sample S7 (Comparative Example) did not repel molten beef tallow. Second, the surface of sample S8 repels molten beef tallow to a large extent. Based on these facts, it is found that the degree of repulsion of the molten beef tallow by the ceramic layer is much stronger than the degree of repulsion of the molten beef tallow by the HCr plating layer. Therefore, as for the antifouling property of molten beef tallow (animal oil), the antifouling property of the ceramic layer is superior to that of the HCr plating layer. For example, the surface of the ceramics layer can be cleaned by wiping the melted beef tallow (animal oil) on the ceramics layer.

(ii) Degree of Evaluation Oil Remaining on the Applied Surface The evaluation oil B (beef tallow) on the surface of the sample S7 (comparative example) and the surface of the sample S8 after cooling shown in FIG. 11(2) was wiped off. The subsequent adhesion state of beef tallow is compared. It can be seen that the amount of beef tallow remaining on the surface of the ceramic layer of sample S8 is obviously smaller than the amount of tallow tallow remaining on the HCr plated layer of sample S7. Therefore, when targeting beef tallow (animal oil) coagulated at room temperature, the antifouling property of the ceramic layer is superior to the antifouling property of the HCr plating layer.

(c) When using evaluation oil C (vegetable oil; canola oil)
(i) Degree of repelling the evaluation oil by the surface layer The adhesion state of the evaluation oil C (canola oil) on the surface of the sample S7 (comparative example) and the surface of the sample S8 after cooling shown in FIG. 12(1) Are compared. Canola oil is liquid at room temperature. Canola oil is a vegetable oil taken from rapeseed.

From FIG. 12(1), it is understood that the extent to which the ceramic layer of sample S8 repels canola oil is stronger than the extent to which the HCr plating layer of sample S7 repels canola oil. Based on this, it can be said that the canola oil is less likely to adhere to the ceramic layer than the HCr plated layer at room temperature. Therefore, when targeting canola oil (vegetable oil) at room temperature, the antifouling property of the ceramic layer is superior to the antifouling property of the HCr plating layer.

(ii) Degree of Evaluation Oil Remaining on the Applied Surface Canola after wiping evaluation oil C (canola oil) on the surface of sample S7 and the surface of sample S8 after cooling shown in FIG. 12(2) Compare the oil adhesion status. It can be seen that the amount of canola oil remaining on the surface of the ceramic layer of sample S8 is smaller than the amount of canola oil remaining on the surface of the HCr plated layer of sample S7. Therefore, when targeting canola oil (vegetable oil) at room temperature, the antifouling property of the ceramic layer is superior to the antifouling property of the HCr plating layer.

(d) When using evaluation oil D (mineral oil; industrial lubricating oil)
(i) To the extent that the surface layer repels the evaluation oil The pour point of the industrial lubricating oil (SHELL TONNA (registered trademark) S3 M 68) is lower than room temperature. Therefore, at room temperature, this industrial lubricating oil exhibits a liquid state.

From FIG. 13(1), it is stronger that the ceramic layer of the sample S8 repels the evaluation oil D (industrial lubricating oil) than that of the HCr plating layer of the sample S7 that repels the evaluation oil D. I understand. Based on this, it can be said that the industrial lubricating oil is less likely to adhere to the ceramic layer than the HCr plated layer at room temperature. Therefore, when the industrial lubricating oil (mineral oil) is targeted at room temperature, the ceramic layer has better antifouling property than the HCr plated layer.

(ii) Degree of evaluation oil remaining on the coated surface Evaluation oil D (industrial lubricating oil) on the surface of sample S7 (comparative example) and sample S8 after cooling shown in FIG. 13(2) The state of adhesion of industrial lubricating oil after wiping is compared. It can be seen that the amount of industrial lubricating oil left on the surface of the ceramic layer of sample S8 is smaller than the amount of industrial lubricating oil left on the surface of the HCr plated layer of sample S7. Therefore, when industrial lubricating oil (mineral oil) is targeted at room temperature, the antifouling property of the ceramic layer is superior to the antifouling property of the HCr plating layer.

Summarizing the above, according to the first embodiment, as shown in FIG. 1, a light-transmitting member including a base 1 made of a glass-based material and a ceramic layer 2 provided in layers on the surface of the base 1. A conductive material is obtained. The ceramic layer 2 is made of a material containing Y ₂ O ₃ as a main component. Thereby, firstly, according to Example 1, a light-transmitting material having low adhesion and excellent antifouling property can be obtained. In other words, the translucent material according to Example 1 corresponds to the low adhesion material and the antifouling material. In addition, the translucent material according to the first embodiment is lighter than the material in which the ceramics layer is formed on the metal base material.

Secondly, according to Example 1, a translucent material having an equivalent light transmittance and the following excellent characteristics as compared with the glass-based material itself can be obtained.
(1) Adhesion between the base 1 made of glass-based material and the ceramic layer 2
(2) Surface hardness
(3) Bending strength
(4) Wear resistance
(5) Antifouling property against thermosetting resin, animal oil, vegetable oil and mineral oil

On the basis of the above-mentioned characteristics, the translucent material according to Example 1 has excellent antifouling property, mechanical strength, smoothness, flatness, scratch resistance, heat resistance, plasma resistance, and ultraviolet ray cut property ( It is used for the following applications, for example, which are required to have (UV absorption), transparency, insulation, and antifouling property against animal oil/vegetable oil/mineral oil.
(1) Door windows for household products (microwave oven, gas oven, oven, etc.)
(2) Cover glass for information terminal equipment (mobile phones, tablet terminals, wearable terminals, LCD monitors, etc.), cover glass for fingerprint authentication sensors
(3) Chemical resistant linings in chemical industry plants, sight glass, peep windows, etc.
(4) Protective panel for lighting equipment and floodlight equipment (spotlights, large floodlight lighting equipment, liquid crystal projectors, etc.)
(5) Glass slides for microscopes for medical and biotechnology, titration plates, DNA electrophoresis plates, etc.
(6) Glass wafers for manufacturing semiconductors and electronic parts, glass substrates
(7) Other applications (solar cell cover glass, bulletproof glass, architectural glass, etc.)

(Example 2)
(Low adhesion material and antifouling material)
A low adhesion material and an antifouling material according to Example 2 of the present invention will be described. The low adhesion material and the antifouling material according to Example 2 have a base portion made of an inorganic material other than the glass material. In other words, the low-adhesion material and the antifouling material according to the second embodiment are made of an inorganic material other than the glass-based material instead of the base 1 made of the glass-based material included in the translucent material shown in FIG. It has a base part made of a system material.

As a material forming the base portion, first, a ceramic material can be used. Examples of ceramic materials include aluminum oxide (Al ₂ O ₃ ), silicon dioxide (SiO ₂ ), and the like. In addition, zirconium oxide (ZrO _2), tungsten carbide (WC), silicon nitride _(Si 3 _{N 4),} and the like. Secondly, a semiconductor material can be used as the material forming the base. Examples of the semiconductor material include silicon (Si), silicon carbide (SiC), gallium nitride (GaN), and the like.

A low adhesion material and an antifouling material according to a modified example of Example 2 of the present invention will be described. The low adhesion material and the antifouling material according to this modification have a base portion made of a metal material (metal material) instead of the inorganic material. In other words, the low-adhesion material and the antifouling material according to the present modified example are replaced with the base part 1 made of a metal-based material instead of the base part 1 made of the glass-based material included in the translucent material shown in FIG. It has a base. As the metal-based material forming the base portion, tool steel such as high speed steel, steel-based material such as stainless steel, cemented carbide and the like can be used. Stainless steel includes high silicon stainless steel containing a relatively high proportion (about 3 to 5%) of silicon (Si). Aluminum may be used for weight reduction.

Hereinafter, the translucent material and the low-adhesion material according to the present invention will be collectively referred to as "low-adhesion material, etc." A low adhesion material or the like can be used as a material for a molding member used when manufacturing a molded product. The term "molding member" means a member that comes into contact with the material used in manufacturing a molded product (including the raw material itself of the molded product and the auxiliary materials used in manufacturing the molded product). The molding member includes a molding die for resin molding. The molding die is used for injection molding, transfer molding, compression molding and the like. When the low-adhesion material or the like has excellent translucency (for example, transparency), the low-adhesion material or the like is used as the material of the mold that uses the photocurable resin. The molding member includes a tableting mold that is used by being attached to a tableting machine that is a type of molding machine, and a molding mold such as a mandrel (core bar) that is used when manufacturing carbon fiber reinforced plastic.

The low-adhesion material and antifouling material according to the present invention are parts, jigs, and tools used in a step of manufacturing a resin used in molding a molded product, a step of molding a molded product, and the like. Can be applied to. The low adhesion material and the like according to the present invention should be applied to parts and the like used when manufacturing by kneading resin, for example, parts, jigs and tools used for kneading and tableting of tablets. You can The low-adhesion material according to the present invention is used when manufacturing intermediate products such as prepregs, parts, jigs, tools for extending or shaping the heated prepreg and cutting. Can be applied to. These parts, jigs and tools are also included in the molding member.

The molding member includes a molding member that requires antifouling properties against thermosetting resins, animal oils, vegetable oils and mineral oils. Examples of molding members include molding dies for manufacturing foods including confectionery, health foods, medicines, sanitary products, tablet mortars (a mortar for tabletting), tableting punches (a pestle for tabletting), etc. Are listed. Examples of foods include instant curry sauce, hashed beef with rice sauce, instant stew sauce, and instant soup sauce each having a lumpy form. Examples of the confectionery include tablet-shaped confectionery having a light flavor, a fruit flavor, and the like. Examples of sanitary products include bath agents, fragrances, deodorants, etc., each having a lumpy form.

The punch may be any one that includes a contact portion that comes into contact with the tablet when tableting the tablet. The body part fixed to the tablet machine and the contact part of the punch may not be separated from each other, and may be integrally configured. The main body portion and the contact portion may be detachable and replaceable, and may be configured separately. The contact portion in this configuration is also included in the punch.

In the experiments described so far, fingerprints and beef tallow containing oils and fats derived from the human body were used as animal oils, and canola oil was used as vegetable oils. Not limited to these, the low adhesion material according to the present application is estimated to have low adhesion and stain resistance for other animal oils such as lard, chicken fat and fish oil. To be done. In addition, the low adhesion material and the like according to the present application are presumed to have low adhesion and stain resistance for other vegetable oils such as soybean oil and corn oil.

The embodiments of the present invention have been described above. The embodiments disclosed this time are to be considered as illustrative in all points and not restrictive. The scope of the present invention is shown by the scope of the claims, and is intended to include meanings equivalent to the scope of the claims and all modifications within the scope.

1 base part 2 ceramics layer 3 intermediate layer 4 wiping paper 5 sample 6 evaluation surface 7 coating area 8 coating jig 9 hot plate

The present invention relates to a light-transmitting materials and a base portion and the ceramic layer. The term "translucent" means the property of transmitting light through a substance (reference: JIS R 1600). In the present application documents, “translucency” includes “transparent state”.

The present invention has been made in view of the above problems. The purpose of the present invention is to provide a translucent material that have a stain resistance against the diverse materials.

According to the present invention, it is possible to provide a translucent material that have a stain resistance against the diverse materials.

Claims (3)

A base made of glass-based material,
A ceramic layer provided so as to directly adhere to the base portion,
The ceramics layer is a translucent material having an antifouling property against at least one of animal oil, vegetable oil and mineral oil by using yttrium oxide as a base material and containing nitrogen and a Group 4A element. The translucent material according to claim 1, wherein the glass-based material is heat-resistant glass, tempered glass, or quartz glass. The translucent material according to claim 1 or 2, wherein the ceramics layer has an antifouling property against at least one of fats and oils derived from a human body, beef tallow, canola oil, and industrial lubricating oil.

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