WO2005100278A1 - 複層ガラスおよびその製造方法 - Google Patents
複層ガラスおよびその製造方法 Download PDFInfo
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- WO2005100278A1 WO2005100278A1 PCT/JP2005/007262 JP2005007262W WO2005100278A1 WO 2005100278 A1 WO2005100278 A1 WO 2005100278A1 JP 2005007262 W JP2005007262 W JP 2005007262W WO 2005100278 A1 WO2005100278 A1 WO 2005100278A1
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- glass
- sealing material
- material composition
- silicone resin
- double
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Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/10—Materials in mouldable or extrudable form for sealing or packing joints or covers
- C09K3/1006—Materials in mouldable or extrudable form for sealing or packing joints or covers characterised by the chemical nature of one of its constituents
- C09K3/1018—Macromolecular compounds having one or more carbon-to-silicon linkages
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C27/00—Joining pieces of glass to pieces of other inorganic material; Joining glass to glass other than by fusing
- C03C27/06—Joining glass to glass by processes other than fusing
- C03C27/10—Joining glass to glass by processes other than fusing with the aid of adhesive specially adapted for that purpose
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
- E06B3/66—Units comprising two or more parallel glass or like panes permanently secured together
- E06B3/663—Elements for spacing panes
- E06B3/66309—Section members positioned at the edges of the glazing unit
- E06B3/66328—Section members positioned at the edges of the glazing unit of rubber, plastics or similar materials
Definitions
- the present invention relates to a double glazing and a method for producing the same.
- a pair of glass plates are arranged to face each other with a gap provided therebetween, and the peripheral edges of the two glass plates are placed through a spacer or through a spacer. Without being bonded, it is formed by bonding using a sealing material.
- the gap forms a vacuum layer maintained in a reduced pressure state or an air layer filled with a rare gas such as dry air or argon gas, and is more excellent in heat insulation and sound insulation than a single-layer glass. It is characterized by the following.
- the gap since the gap forms a vacuum layer or an air layer filled with a rare gas such as dry air or argon, it has excellent dew-proof performance.
- low-melting-point glass is widely used as a sealing material used for bonding glass plates. That is, paste low-melting glass in the form of a paste on the periphery of the glass plate, place the glass plates facing each other, heat to 480 ° C or higher to make the low-melting glass molten, and then cool to room temperature.
- the glass plates are joined together by solidification (see Patent Documents 1 to 3).
- Patent Document 1 when a wind pressure is applied and a bending force acts on the glass plate, cracks occur at the joints of the double-glazed glass using the low-melting glass as a sealing material. There was a drawback that it easily occurred. If a crack occurs, the airtightness of the joint between the glass plates decreases. In addition, since the low-melting glass is apt to be brittle, the generated cracks grow and the strength of the joint is impaired.
- a tempered glass In a multi-layer glass, it may be desirable to use a tempered glass to improve the strength. However, when producing a double-glazed glass using tempered glass, it is not preferable to use a low-melting glass as a sealing material.
- Tempered glass generates a residual stress in the thickness direction of the glass by heat-treating or chemically modifying the surface of the glass plate, thereby increasing the strength by forming a compressive stress layer on the surface of the glass plate. It is something. A place to manufacture double glazing using low melting glass as sealing material In this case, the tempered glass is exposed to a high temperature of 480 ° C or more. When exposed to such high temperatures, the residual stress in the compressive stress layer may be lost or reduced, and the strength of the tempered glass may be impaired.
- Low-melting glass used for sealing materials usually contains lead, but contains harmful substances such as lead due to the demand for environmental protection and the increasing demand for resource recycling in recent years. U, it is desirable to produce double glazing using no sealing material.
- Patent Document 4 proposes a double-layered glass using a metal solder containing a low-melting-point metal such as indium, lead, tin, zinc, and indium as a sealing material instead of low-melting-point glass.
- a metal solder containing a low-melting-point metal such as indium, lead, tin, zinc, and indium as a sealing material instead of low-melting-point glass.
- a metal solder have poor adhesion compared to low melting glass.
- lead is not used for environmental protection.
- indium is an unpreferable material because it is an expensive material, which leads to an increase in the production cost of the double glazing.
- Patent Document 5 discloses a double glazing in which resin is used for joining glass plates.
- a thermoplastic resin such as polyisobutylene is applied to a glass plate, and the facing glass plates are laminated, and then the thermoplastic resin is cured to form a resin spacer. It is manufactured by filling a resin-based sealant made of a thermoplastic resin such as polysulfide on the outside of the resin spacer.
- Patent Document 6 describes that such a resin spacer has short durability.
- the resin sealing material used for sealing the interface between the resin spacer and the glass plate also has poor durability, that is, long-term airtightness.
- the double glazing described in Patent Document 6 uses a metal primary spacer extruded with an aluminum alloy to maintain its shape, and uses a side face of the primary spacer and a glass.
- a primary seal of butyl rubber is applied to the boundary surface between the main surface of the plate and the edge of the glass plate of the primary spacer is secondarily sealed with a silicone-based or polysulfide-based sealant. Therefore, in the double glazing described in Patent Document 6, the interface between the primary spacer and the glass plate is sealed with butyl rubber, so that the airtightness is inferior, and the vacuum glazing in which the gap is kept in a reduced pressure state. It cannot be used for laminated glass.
- Patent Documents 1 to 3 disclose vacuum double glazing in which the gap is maintained in a reduced pressure state.
- a plurality of spacers made of metal or glass are provided between the glass plates, specifically, at a portion corresponding to a gap between the glass plates. is set up.
- spacers were not bonded to the glass plates, but were fixed simply by being sandwiched between the glass plates using the atmospheric pressure load applied to the glass plates. For this reason, in a state where a sufficient atmospheric pressure load is not applied to the glass sheet, such as before or during the depressurizing operation of the gap in the production stage of the multi-layer glass, There was a possibility that the spacer would be displaced. Also, at the product stage when the depressurizing operation of the gap is completed, if the atmospheric pressure load applied to the glass plate is insufficient to hold the spacer, the spacer may fall out of the gap.
- Patent Document 1 Japanese Patent Application Laid-Open No. 2003-20259
- Patent Document 2 Japanese Patent Application Laid-Open No. 2003-137612
- Patent Document 3 JP 2003-192400A
- Patent Document 4 Japanese Patent Application Laid-Open No. 2003-89537
- Patent Document 5 JP-A-2003-212612
- Patent Document 6 Japanese Patent Application Laid-Open No. 2003-201152
- an object of the present invention is to provide a double glazing in which glass plates are joined at low temperature using a sealing material containing no harmful component such as lead and a method for producing the double glazing.
- the present invention has been made to achieve the above object. That is, the present invention provides a double-glazed glass comprising a pair of glass plates arranged to face each other so as to have a gap between the two glass plates, and the peripheral edges of the two glass plates are joined using a sealing material. And
- the sealing material comprises a sealing composition containing a curable methylphenol silicone resin and a refractory filler,
- the amount of the refractory filler is 10 to 80% by mass
- the methylphenol silicone resin provides a double glazing characterized in that the molar ratio of the phenol group to the methyl group is 0.1 to 1.2.
- the methylphenyl silicone resin has a molar ratio of a bifunctional silicon unit to (a total of a bifunctional silicon unit and a trifunctional silicon unit) of 0.05 to 0. It is preferably 55.
- the refractory filler is preferably spherical silica having an average particle size of 0.1 to 20 m.
- the double-glazed glass of the present invention may be a so-called vacuum double-glazed glass in which the gap is held in a reduced pressure state and a pressure holding member is arranged between the pair of glass plates. preferable.
- the pressure holding member is bonded to at least one of the pair of glass plates using a sealing material composition containing the curable methyl silicone resin and a refractory filler. It is preferable to
- the pressure holding member is formed of a composition containing a curable methylphenyl silicone resin and a refractory filler,
- An amount of the refractory filler to the total of the methylphenylsilicone resin and the refractory filler in the composition is 10 to 80% by mass;
- the molar ratio of the methyl group to the methyl group is 0.
- the two glass plates after applying a sealing material composition to at least one peripheral portion of a pair of glass plates, the two glass plates are arranged to face each other with the sealing material composition interposed therebetween.
- the sealant composition contains a curable methylphenol silicone resin and a refractory filler
- the amount of the refractory filler is 10 to 80% by mass relative to the total of the methylphenyl silicone resin and the refractory filler in the sealing material composition;
- the methylphenol silicone resin provides a method for producing a double glazing, wherein the molar ratio of the phenol group to the methyl group is from 0.1 to 1.2.
- the double-glazed glass of the present invention uses a sealing agent composition of the present invention containing a curable methylphenol silicone resin as a sealing material and a refractory filler to form a glass plate.
- Glass plates are joined at a much lower temperature (130 ° C to 250 ° C) than when using conventional low-melting glass as a sealing material (480 ° C or higher). Have been. For this reason, tempered glass can be used for the glass plate constituting the double glazing. This is particularly preferable for a vacuum double glazing in which the gap is kept in a reduced pressure state.
- the sealing material of the present invention used for bonding glass plates has excellent mechanical strength, particularly strength against brittle fracture, and low-melting glass is used as the sealing material.
- the double glazing of the present invention is excellent in the airtightness of the joint between the glass plates.
- the double glazing of the present invention has no risk of cracking, and thus has excellent strength at the joint between the glass plates and excellent long-term reliability of the joint.
- the double-glazed glass of the present invention has a higher hermeticity at the joints, especially a longer-term hermeticity at the joints, as compared with a conventional double-glazing using a resinous material for bonding the glass plates.
- the double glazing of the present invention in which the pressure holding member is bonded to at least one of a pair of glass plates constituting the double glazing using the sealing material composition of the present invention is a conventional vacuum double glazing.
- the multilayer structure of the present invention in which the pressure holding member disposed in the gap portion is formed using the composition of the present invention containing a curable methyl fluor silicone resin and a refractory filler. Since the glass is made of a material that is excellent in moldability as compared with the case where the pressure holding member is formed using a metal material or a glass material, the time required for forming the pressure holding member is reduced.
- the pressure holding member to be formed and formed has a high degree of freedom in the shape surface.
- the formed pressure holding member is formed of a pair of glass plates constituting the double-glazed glass. Since it can be bonded to at least one, the problems of the displacement of the pressure holding member in the manufacturing stage and the risk of the pressure holding member falling off in the product stage, which were problems in the conventional vacuum insulated glass, are solved. You.
- the method for producing a double-glazed glass of the present invention uses the sealing agent composition of the present invention containing a curable methylphenol silicone resin and a refractory filler for sealing glass plates.
- the sealing temperature is significantly lower than when sealing is performed using conventional low-melting glass.
- energy consumption and work time are reduced, resulting in energy saving and cost reduction.
- FIG. 1 is a perspective view of one embodiment of a double glazing of the present invention, in which an upper glass plate is shown in a partially removed state.
- FIG. 2 is a side cross-sectional view of the double-glazed glass shown in FIG. 1.
- FIG. 3 is a view similar to FIG. 1, except that a hole is formed in the upper glass plate, and an exhaust pipe is inserted into the hole. Also, a lid for sealing the opening of the exhaust pipe is shown.
- FIG. 4 is a view similar to FIG. 3, except that a hole formed in an upper glass plate forms an exhaust hole.
- FIGS. 5 (a) and 5 (b) are plan views of a glass plate constituting a test sample used for leak evaluation.
- FIG. 6 is a partial cross-sectional view of a test sample used for leak evaluation.
- FIG. 7 is a perspective view of a sample used for evaluation of adhesion to glass. Explanation of symbols
- FIG. 1 is a perspective view of one embodiment of a double-glazed glass according to the present invention, in which an upper glass plate is partially removed.
- FIG. 2 is a side sectional view of the double-glazed glass 1 of FIG.
- a pair of glass plates 2 and 3 are arranged to face each other with a gap 10 therebetween.
- the glass plates 2 and 3 are joined at their peripheral edges using a sealing material 4.
- the double-glazed glass 1 shown in FIGS. 1 and 2 is a so-called vacuum double-glazed glass in which the gap 10 is kept in a reduced pressure state.
- a plurality of columnar pressure holding members 6 are arranged at intervals between the two glass plates 2 and 3, more specifically, at a portion corresponding to the gap 10 between the two glass plates 2 and 3.
- the pressure holding member 6 functions to regulate the thickness of the gap 10 and to support the atmospheric pressure load applied to the two glass plates 2 and 3.
- the double-glazed glass 1 of the present invention has a specific sealing material composition (hereinafter, referred to as a "sealing material composition of the present invention") for bonding the glass plates 2 and 3 in the illustrated configuration. ").). More specifically, the glass plates 2 and 3 are joined together using a cured product obtained from the sealing material composition of the present invention or a cured product obtained from a molded product of the sealing material composition described below. Have been.
- a curable silicone resin is composed of a bifunctional silicone monomer (R Si-X) and a trifunctional silicone monomer.
- a tetrafunctional silicon monomer (Si—X) may be used in combination. Where R is carbon
- the curable methylsilicone resin is a compound in which R is an alkyl group having 1 to 4 carbon atoms or a monovalent aromatic hydrocarbon having 6 to 12 carbon atoms. More preferably, it is a methyl group, an ethyl group or a phenyl group.
- X represents a hydroxyl group, an alkoxy group, It is a solvable group.
- X is preferably a hydroxyl group.
- the curable silicone resin is a copolymer obtained by partially hydrolyzing and co-condensing these monomers, and has a silanol group generated when X is hydrolyzed.
- the curable silicone resin can be further condensed (can be cured) by its silanol group, and finally becomes a cured product having substantially no silanol group by curing.
- the cured product is composed of bifunctional silicon units (R SiO)
- silicon units means, together with the silicon units of these cured products, the silicon units containing silanol groups which are formed by hydrolysis of X and contribute to the curability of the silicone resin.
- a bifunctional silicon unit having a silanol group is represented by (R Si (OH)-).
- the molar ratio of each silicon unit in the water-soluble silicone resin is equal to the molar ratio of each silicon monomer as a raw material.
- the curable methylphenol silicone resin preferably has a Si-OZSi-R value of 11.0 to 15.2, as determined from FT-IR. That is, the peak area of Si—O (peak appearing in the range of 1250 to 95 Ocm ⁇ 1 ) (a) is changed to the peak area derived from methyl group (peak appearing in the range of 1330 to 1250 cm ⁇ 1 ) (b). And the product of the peak area derived from the methyl group (b) and the number of moles of the phenyl group determined from the H—N MR and the value of the number of moles of the methyl group (c).
- the number of moles of a phenyl group determined by 1 H-NMR is The value of the number of moles of the chill group is from 0.1 to 1.2, more preferably from 0.3 to 0.9. In other words, the ratio of the number of fuel groups to the total number of R in the resin is 0.1 to 0.5, more preferably 0.2 to 0.5. Silicone resins are preferred. Also, F
- the curable methylphenol silicone resin has a molar ratio of a bifunctional silicon unit to (a total of a bifunctional silicon unit and a trifunctional silicon unit) (simple ratio).
- the molar ratio of the bifunctional silicon unit is 0.05 to 0.55.
- the curable methylphenyl silicone resin is a curable silicone resin containing both a methyl group and a phenyl group as the organic group R.
- the curable methylphenol silicone resin is prepared by, for example, a method of hydrolyzing and co-condensing dichlorodimethylsilane and trichloromethylphenylsilane.
- the molar ratio of the bifunctional silicon unit of the curable methylphenyl silicone resin is more preferably from 0.2 to 0.4. Further, the curable Mechirufue - Le silicone resin which becomes a force substantially only the bifunctional Kei-containing units and trifunctional Kei-containing units are preferred.
- Such a curable methylphenol silicone resin has excellent heat resistance without easily decomposing and discoloring even if it is kept at a high temperature of 250 ° C or more for a long time.
- the molar ratio of the bifunctional silicon unit described above was determined from Si-NMR.
- Curable methylphenyl silicone resins include curable dialkyl silicone resins such as dimethyl silicone resin, and curable alkyl resins other than methylphenyl silicone resins such as ethylphenol silicone resin.
- the physical properties can be adjusted by adding a small amount of enyl silicone resin. Usually, it is preferable not to use these curable silicone resins other than the curable methylphenol silicone resin.
- a curable methylphenol silicone resin can be used after being modified with an epoxy resin, a phenol resin, an alkyd resin, a polyester resin, an acrylic resin, or the like. The amount of the resin that is modified by force is small, and the curable methyl phenyl silicone resin is substantially modified as the preferred one, and the curable methyl phenyl silicone resin is preferred. ,.
- the curable methylphenyl silicone resin is usually transported as a solution (varnish) dissolved in a solvent. Receive handling such as transportation and storage.
- the sealing material composition of the present invention can be produced by using this varnish and mixing it with a refractory filler.
- the product produced in this way becomes a paste-like sealing material composition having fluidity.
- a solid sealing material composition can be obtained by mixing a curable methylphenol silicone resin with a refractory filler without a solvent.
- the solvent can be removed to obtain a solid sealing material composition.
- a paste-like sealing material composition is obtained by mixing a solvent with the solid sealing material composition.
- the solvent used for varnishing the curable methylphenyl silicone resin is not particularly limited, and may be any solvent that dissolves the curable methylphenyl silicone resin.
- aromatic hydrocarbon solvents xylene, toluene, benzene, solvents having a boiling point of 100 ° C or lower, methylethyl ketone, ethyl acetate, isopropyl acetate, ethyl ether, dipropyl ether, tetrahydrofuran, acetonitrile, propionitrile , 1-propanol, 2-propanol, aryl alcohol and the like can be used.
- the amount of the solvent used in the varnish is preferably 5 to 50% by mass. If the amount is less than 5% by mass, the dissolving effect of the curable methylphenol silicone resin is insufficient, and it becomes difficult to uniformly mix the resin with the refractory filler. If the content exceeds 50% by mass, when the solvent is mixed with the refractory filler, the solvent causes a phase separation with the refractory filler, and immediately after mixing the refractory filler, a large amount of energy is required when removing the solvent. It costs.
- the curable methylphenyl silicone resin is present as a partially polymerized methylphenyl silicone resin (also simply referred to as a partially polymerized methylphenyl silicone resin) in the sealing material composition.
- a partially polymerized methylphenyl silicone resin also simply referred to as a partially polymerized methylphenyl silicone resin
- the sealing material composition has a lower possibility of generating bubbles as compared with the raw material methylphenol silicone resin when joining glass plates to each other, and can improve airtightness.
- the partially polymerized methylphenyl silicone resin is a high-viscosity liquid or a solid having a high melt viscosity as compared with the raw material methylphenyl silicone resin, and the sealing material composition of the present invention is used as a molded article.
- the partially polymerized methylphenol silicone resin is a curable methylphenyl silicone resin in which the curing of the curable methylphenyl silicone resin as a raw material is partially advanced.
- the curable methyl phenyl silicone resin in the present invention means a curable methyl phenyl silicone resin which is a raw material of the partially polymerized methyl phenyl silicone resin, and also includes the partially polymerized methyl phenyl silicone resin. means.
- a product obtained by partially polymerizing a curable methylphenyl silicone resin is referred to as a partially polymerized methylphenyl silicone resin.
- Partial polymerization of the curable methylphenyl silicone resin is usually carried out by stopping the curing reaction of the raw material methylphenyl silicone resin by heating to such an extent that the curing reaction is not completely completed. For example, it is obtained by partially curing the raw material methylphenylsilicone resin by a method such as heating at a lower temperature than in the case of normal curing reaction, or heating for a shorter time than required for normal curing. .
- To partially polymerize the curable methyl polyester resin for example, polymerize at a temperature of 120 ° C to 180 ° C, and complete the curing reaction using the viscosity of the methylphenol silicone resin as a guide. Stop the reaction to the extent that it does not proceed to the end.
- the heat of heating is completed when the viscosity of the methylphenyl silicone resin reaches 000cP to 60, OOOcP.
- the partial polymerization of the raw material methylphenyl silicone resin can be carried out in the composition in which the refractory filler is present or in the process of producing the composition.
- Curing of the curable methylphenyl silicone resin by dehydration condensation usually proceeds only by heating, and the dehydration condensation reaction between silanol groups of the resin and the resistance of the resin to silanol groups.
- a dehydrated condensation reaction of silanol groups on the surface of the fire filer forms a cured product insoluble in the solvent.
- the sealing material composition applied to the peripheral portion of the glass plate hardens by only heating at a temperature of 140 ° C. or more, preferably 180 ° C. to 300 ° C. for 1 to 120 minutes. , Insolubilizes and becomes a sealing material. Therefore, in the conventional sealing using low melting point glass, it was necessary to heat the glass to 400 to 550 ° C, which is higher than the softening temperature of the glass. , 3 can be joined together.
- a solvent When a solvent is contained in the sealing material composition, it is volatilized and removed at the beginning of heating, and when a non-heat-resistant substance such as an organic substance is present, it is volatilized or removed during curing. Left. However, in order to perform stable curing, it is preferable that the solvent is volatilized and removed at a lower temperature before the sealing material composition is cured. Such solvent volatilization is carried out, for example, at a temperature of 100 to 140 ° C. for 30 to 60 minutes, depending on the type of the solvent.
- a curing catalyst may be used to lower the curing temperature of the curable methylphenyl silicone resin.
- the catalyst include organometallic salts such as zinc, cobalt, tin, iron, and zirconium, and quaternary ammonium salts.
- Chelates such as platinum salts, aluminum and titanium, and various amines or salts thereof are exemplified.
- the refractory filler contained in the sealing material composition is a heat-resistant inorganic powder, specifically, silica, anoremina, mullite, dinolecon, cordierite, ⁇ -eucryptite, ⁇ - Spodumene, ⁇ -quartz solid solution, forsterite, bismuth titanate, barium titanate, etc. Of course, these can be used in combination.
- the average particle size of the refractory filler is preferably from 0.1 to 130 m, more preferably from 0.1 to 90 ⁇ m, and even more preferably from 0.1 to 20 111. LO m is particularly preferred. If the average particle size exceeds the above upper limit, cracks occur at the interface between the refractory filler and the silicone resin after the curing of the methylphenyl silicone resin, and gas force leaks to the gap 10 to cause the desired May not be able to maintain the reduced pressure state. If the average particle size is less than the above lower limit, the powder will agglomerate and will not be uniformly dispersed in the curable methylphenyl silicone resin. In addition, there is a problem that the amount of the refractory filler compounded is limited due to the increase in viscosity.
- the refractory filler is preferably silica, particularly spherical silica.
- the average particle size of the spherical silica is preferably 0.1 to 130 / ⁇ , more preferably 0.1 to 90 / zm.
- 0.1 to 20 111 is more preferable.
- 0.1 to: LO / zm is more preferable.
- the average particle size is less than the above range, the particles are aggregated to lower the dispersibility, and a uniform composition cannot be obtained. If the average particle size is more than the above range, precipitation of the particles occurs, resulting in poor dispersibility. A uniform composition cannot be obtained. In addition, there is a problem that the amount of the refractory filler to be mixed is limited due to the increase in viscosity.
- the blending amount of the refractory filler in the sealing material composition of the present invention is 10 to 80% by mass based on the total amount of the curable methylphenol silicone resin and the refractory filler. If it is less than 10% by mass, sufficient heat resistance cannot be exhibited. If the content exceeds 80% by mass, the dispersibility and affinity with the methylphenyl silicone resin deteriorate, and as a result, cracks occur in the sealing material (cured product), and gas leaks to the gap 10 and The desired reduced pressure state cannot be maintained. In addition, a decrease in adhesive strength occurs.
- the preferred amount of refractory filler is 30-70% by weight.
- the amount of the spherical silica in the sealing material composition is determined according to the curable methylphenyl silicone resin and the refractory filler. It is 10 to 80% by mass, preferably 30 to 70% by mass, based on the total. If the content is less than 10% by mass, heat resistance and light resistance deteriorate. If the content is more than 80% by mass, cracks occur in the sealing material, and gas force S leaks into the gap 10 and a desired pressure reduction is performed. The state cannot be maintained. In addition, a decrease in adhesive strength occurs.
- the sealing material composition of the present invention may include spherical particles having a larger particle diameter (more than 130 m) and a narrow particle diameter distribution. A small amount can be blended as a raw material.
- spherical silica having a particle diameter of 150 to 500 ⁇ m is preferred, and specific examples thereof include spherical silica, glass beads, and ceramic beads. Glass beads are made of soda-lime glass (NaO-CaO-SiO), low alkali glass (CaO-BO-AlO-SiO),
- the compounding amount is preferably 0.1 to 15% by mass (however, 50% by mass or less based on the total amount of the refractory filler) based on the total of the curable methylphenol silicone resin and the refractory filler. Particularly preferred is 1 to 5% by mass.
- the sealing material composition of the present invention may contain components other than the curable methylphenol silicone resin and the refractory filler. Such other components are, for example, components other than the component finally functioning as a sealing material, such as the solvent, or components remaining in the sealing material, for example, a sealing material coloring pigment.
- the content of these components in the sealing material composition is not particularly limited, but is an amount which does not impair the properties of the molded article of the sealing material composition of the present invention and the sealing material composition obtained therefrom.
- the former component, excluding the solvent is preferably 20% by mass or less based on the sealing material composition.
- the amount of the solvent is arbitrary depending on the method of use, such as using the sealing material composition in a liquid state or in a solid state, and the like. Usually, the amount of the solvent is 50% by mass based on the sealing material composition. The following is preferred.
- Specific examples of the other components and their suitable amounts include the following.
- An amine-based curing agent for accelerating the curing of the methylphenol silicone resin is 5% by mass or less, and a pigment or the like is 15% by mass or less for the purpose of further increasing the mechanical heat resistance of the sealing material or for coloring.
- 5% by mass of tackifier such as rosin, rosin, rosin derivative, etc. for the purpose of improving pot life of adhesive composition, dispersibility of refractory filler and methylphenyl silicone resin, and sealing property The following can be combined.
- the sealing material composition of the present invention is obtained by mixing the curable methylphenyl silicone resin and the refractory filler to form a uniform composition.
- a curable methylphenylsilicone resin solution (varnish) may be used, and the composition may be used as a paste-like composition containing the curable methylphenylsilicone resin, a solvent, and a refractory filler.
- the varnish and the refractory filler may be mixed under heating and stirring, and then the solvent may be volatilized and removed to obtain a solid composition substantially containing no solvent.
- the temperature at which the solvent is removed by volatilization is 100 to 180 ° C, preferably 100 to 140 ° C, depending on the type of the solvent used.
- the sealing material composition of the present invention contains a solvent, preferably 10 to 30% by mass of a paste. It is preferable to use in the state of.
- its shape is not particularly limited, and it may be formed into a shape such as a sheet, a wire, or a stick.
- a curable methylphenol silicone resin can be partially polymerized to obtain a partially polymerized methylphenol silicone resin.
- the partial polymerization of the curable methyl silicone resin may be performed before mixing with the refractory filler, or may be performed after mixing with the refractory filler.
- a varnish When a varnish is used, it may be carried out in the presence of a solvent or after removing the solvent. Normally, as described above, the varnish and the refractory filler are heated and mixed with stirring to remove the solvent in that state, and then the temperature is further raised in that state to partially remove the methylphenyl silicone resin. It is preferable to carry out the polymerization.
- Partial polymerization of methylphenylsilicone resin stops the reaction before the curing reaction has completely progressed, so that the viscosity of the composition containing methylphenylsilicone resin is 120 to 180 ° Perform at a temperature of C.
- heating may be stopped when the viscosity of the composition becomes 5000 cP to 60, OOOcP!
- the sealing material composition of the present invention containing the partially polymerized methylphenol silicone resin may be used as a molded article formed into a sheet, wire, stick, or the like.
- the sealing material composition obtained by heating as described above to obtain a partially polymerized methylphenol silicone resin becomes a clay-like composition, and this heated clay-like composition is poured into a mold. It can be shaped. Specifically, it can be molded into various desired shapes such as a sheet, a wire, and a stick by using a mold made of fluorine resin or the like.
- the obtained molded article of the sealing material composition in the shape of a sheet, wire, stick, or the like can be applied to the joining of glass plates as it is.
- the sealing material composition of the present invention containing the partially polymerized methylphenol silicone resin has excellent handleability even when used in the form of a paste dissolved in the above-mentioned suitable solvent. This is rather preferred.
- the amount of the solvent is as described above.
- the layer thickness of the sealing material composition of the present invention at the joint portion is preferably 100 ⁇ m to lmm, more preferably 150 ⁇ m to 500 ⁇ m.
- the other components of the double glazing shown in the drawing can be widely selected from known ones.
- the type of glass plates 2 and 3 is not particularly limited, but soda lime glass, particularly soda lime glass formed by a float method, is most common because of its low cost. However, the glass plates 2 and 3 may be provided with desired characteristics as needed. Specifically, for example, a hot wire obtained by adding a trace metal such as conoreto, iron, selenium, nickel, etc. to a tempered glass or soda-lime glass component with a compressive stress layer formed on the glass surface by heat treatment or chemical modification.
- a trace metal such as conoreto, iron, selenium, nickel, etc.
- Absorbing glass, high-transmitting glass that has a more uniform spectral characteristic in the visible light region by reducing impurities contained in the glass, and has a unique mold pattern on the surface that is molded by a roll-out method, Molded glass with design properties, low reflection glass with reduced reflection by providing fine irregularities on the surface, and shielding properties by rubbing the glass surface formed by the float method Ground glass, TiO film 'TiN film etc. on the glass surface
- Formed heat-reflective glass transparent conductive oxide film such as fluorine-doped tin oxide, and multilayer film such as oxide Z silver and Z oxide to impart the property of reflecting long-wavelength heat radiation
- transparent conductive oxide film such as fluorine-doped tin oxide
- multilayer film such as oxide Z silver and Z oxide to impart the property of reflecting long-wavelength heat radiation
- the glass composition may be borosilicate glass, alkali barium glass, silica glass, lithium alumina silicate glass, or borate glass.
- the double glazing of the present invention is characterized in that glass plates can be joined at a much lower temperature than when low melting glass is used as a sealing material. This feature is particularly preferable when a tempered glass having a compression stress layer formed on the glass surface is used among the glasses having the various properties exemplified above.
- a compressive stress layer is formed on the glass surface by generating a residual stress in the thickness direction of the glass by rapidly cooling the glass heated to near the softening temperature to room temperature.
- a compressive stress layer is formed by chemical denaturation, a method in which alkali ions on the glass surface are ion-exchanged while being heated to a temperature equal to or lower than the annealing point, or a method in which the glass surface has low expansion by heat treatment.
- Method of precipitating microcrystals, glass sulfite at high temperature The method is performed by exposing Na + on the surface by exposing it to an atmosphere containing gas and moisture, and using a silica-rich, low-expansion glass on the surface.
- the glass plates can be bonded to each other at a temperature of 140 ° C or more, preferably 180 ° C to 300 ° C, the residual in the compressive stress layer due to heating can be obtained. The loss or reduction of stress is eliminated. For this reason, tempered glass can be used as the glass plate constituting the double-glazed glass.
- the thickness of the glass plates 2 and 3 is a force that can be appropriately selected according to the type of glass used, the mechanical strength required for the glass plate, and the like.
- the pressure holding member 6 disposed between the glass plates 2 and 3 which is about 4.2 mm is a known material, specifically, as long as it can support the atmospheric pressure load applied to the glass plates 2 and 3.
- metal materials such as iron, copper, aluminum, tungsten, nickel, chromium, and titanium, carbon steel, chromium steel, nickel steel, nickel chrome steel, manganese steel, chromium manganese steel, chromium molybdenum steel, and silicon steel Alloy materials such as brass, solder, and duralumin, or inorganic materials such as ceramics and glass.
- the shape of the pressure holding member 6 is not limited to a columnar shape as shown in Figs. 1 and 2 as long as it is hardly deformed by an external force. Other shapes may be, for example, prismatic or spherical. Further, the refractory filler having a particle size of more than 130 ⁇ m, preferably 150 to 500 ⁇ m, may be used as the pressure holding member 6.
- the pressure holding member 6 is not limited to one that is interspersed between the glass plates 2 and 3, and the plate-shaped pressure holding member 6 is formed in the longitudinal direction or the longitudinal direction of the glass plates 2 and 3. A plurality may be arranged so as to extend in the vertical direction with respect to.
- the height of the pressure holding member 6 is appropriately selected according to the thickness of the gap portion 10 of the double-glazed glass 1, and specifically, is preferably 100 ⁇ m to 1 mm, more preferably 150 ⁇ m. m ⁇ 500 ⁇ m.
- the pressure holding member 6 is preferably bonded to at least one of the glass plates 2 and 3 using the sealing material composition of the present invention.
- the pressure holding member spacer
- the pressure holding member is not bonded to the glass plate, but is simply held between the glass plates using the atmospheric pressure applied to the glass plate. Since the members were fixed, there was a risk that the pressure holding member would be displaced during the production of the double-glazed glass, and that the pressure holding member would fall off during the product stage.
- these problems are solved by joining the pressure holding member 6 to at least one surface of the glass plates 2 and 3.
- the sealing material composition of the present invention has excellent bonding strength when used for bonding the glass plates 2 and 3 to the known material of the pressure holding member 6 described above. Further, since the sealing material composition of the present invention can bond the pressure holding member 6 to at least one of the glass plates 2 and 3 at a low temperature of 140 ° C. or more, preferably 180 ° C. to 300 ° C. Tempered glass can be used as the glass plate constituting the double-glazed glass.
- the pair of glass plates 2 and 3 to which glass plate the pressure holding member 6 is bonded is not particularly limited, and may be appropriately selected in consideration of workability in the production stage of the double-glazed glass. Good. Further, the pressure holding member 6 may be joined to both the glass plates 2 and 3.
- the pressure holding member 6 may be formed using the sealing material composition of the present invention.
- the pressure holding member 6 formed using the sealing material composition of the present invention can be directly bonded to at least one of the pair of glass plates 2 and 3.
- the pressure holding member 6 formed by using the sealing material composition of the present invention has at least one of a pair of glass plates 2 and 3 at a low temperature of 140 ° C. or more, preferably 180 ° C. to 300 ° C. Therefore, tempered glass can be used as the glass plate constituting the double-glazed glass.
- the sealing material composition of the present invention is excellent in moldability, and thus has a high degree of freedom in shape when forming the pressure holding member 6.
- the double glazing of the present invention is not limited to a so-called vacuum double glazing as shown in Figs. That is, the double glazing of the present invention widely includes a double glazing formed by joining a pair of glass plates disposed to face each other with a gap portion using the sealing material composition of the present invention.
- the spacer may be present at the end of the double-glazing.
- the bonding surface between the glass plate and the spacer is bonded via the sealing material composition of the present invention.
- the spacer conventionally known ones such as metal, glass, and resin can be widely used.
- the multilayer glass of the present invention is not limited to a so-called vacuum multilayer glass in which the gap between the glass plates is kept in a reduced pressure state, and may be a multilayer glass described in JP-A-2003-201152. Like a glass, an air layer is formed in the gaps!
- the glass plates can be joined at a low temperature
- tempered glass can be used as the glass plate constituting the double-glazed glass, and the joined portion has excellent long-term airtightness.
- the double-glazed glass is a so-called vacuum double-glazed glass.
- the so-called vacuum insulated glass has better heat insulation than an insulated glass in which an air layer is formed in the gap, so that the thickness of the gap required to obtain a desired heat insulating property is small. I'm sorry. Thereby, the thickness of the double glazing can be reduced.
- the pressure holding member 6 is arranged at a predetermined position on the glass plate 3.
- the sealing material composition of the present invention is applied to a predetermined position on the glass plate 3 so as to have a predetermined shape.
- a paste-like sealing material composition containing a solvent including a composition containing partially polymerized methylphenylsilicone resin
- a glass, a brush, a spray, a dispenser, or the like is used.
- a sealing material composition is applied to a predetermined position on the plate 3 so as to have a predetermined shape (for example, a columnar shape).
- a molded product of a sealing material composition such as a sheet (including a molded product containing a partially polymerized methyl silicone resin)
- a predetermined shape For example, a columnar shaped body is placed at a predetermined position on the glass plate 3 heated to 180 to 200 ° C.
- the application of the sealing material composition of the present invention may be performed using other methods, for example, a spray method, a screen printing method, a spin coating method, or the like.
- the sealing material composition of the present invention is cured by heating to form a pressure holding member.
- a paste-like sealing material composition containing a solvent is used, after application of the sealing material composition, the mixture is heated at 120 ° C. for 1 to 60 minutes to volatilize and remove the solvent.
- the paste is dried at 180 to 200 ° C for several minutes, and then subjected to a predetermined temperature condition, for example, 140 ° C or more.
- the sealing material composition is heated and cured at a temperature of 180 ° C. to 300 ° C. for 1 to 120 minutes.
- the glass plate 3 When the pressure holding member 6 is formed using the sealing material composition of the present invention and is processed into a predetermined shape using a metal material which is not easy to use, the glass plate 3 The pressure holding member 6 is arranged at a predetermined upper position. Here, preferably, the pressure holding member 6 is bonded to a predetermined position of the glass plate 3 using the sealing material composition of the present invention.
- the sealing material composition of the present invention When the pressure holding member 6 is joined to the glass plate 3 using the sealing material composition of the present invention, first, at least one of the joining surfaces of the glass plate 3 and the pressure holding member 6 is provided with the present invention. Apply the sealing composition.
- the bonding surface refers to a surface of the glass plate 3 and the surface of the pressure holding member 6 that come into contact with each other when the pressure holding member 6 is bonded to the glass plate 3.
- the sealing material composition of the present invention is applied to at least one of the bonding surfaces of the glass plate 3 and the pressure holding member 6, specifically, for example, a paste-like sealing material containing a solvent is used.
- a composition including a composition containing a partially polymerized methylphenol silicone resin
- the sealing material composition is applied to the joint surface with a brush, a spray, a dispenser, or the like.
- a molded article of the sealing material composition such as a sheet (including a molded article containing partially polymerized methylphenyl silicone resin) is used, the object to be applied (the glass plate 3 or the pressure holding member 6) is applied.
- the sealing material composition of the present invention may be performed using other methods. For example, a spray method, a screen printing method, a spin coating method, or the like may be used.
- the pressure holding member 6 is placed at a predetermined position on the glass plate 3 so as to cover the applied sealing material composition. Thereafter, the pressure holding member 6 is heated at a predetermined temperature condition, for example, 140 ° C. or higher, preferably 180 ° C. to 300 ° C. for 1 to 120 minutes while pressurizing the pressure holding member 6 from above. Thereby, the sealing material composition is cured by heating, and the pressure holding member 6 is bonded to the glass plate 3.
- the solvent is volatilized and removed by heating at 120 ° C. for 1 to 60 minutes after the application of the sealing material composition. Good. After that, in either case of the paste-like sealing material composition or the molded product of the sealing material composition, the paste is dried at 180 to 200 ° C for several minutes, and then applied while being heated to 180 to 200 ° C. It is preferable that the pressure holding member 6 be placed on the glass plate 3 so as to cover the sealed sealing material composition.
- the pressure-holding member is only formed by sandwiching the pressure-holding member 6 using the atmospheric pressure load applied to the glass plates 2 and 3 in which the degree of vacuum in the gap 10 is high. As long as the pressure holding member 6 can be fixed, the pressure holding member 6 may be arranged at a predetermined position on the glass plate 3 without being joined to the glass plate 3.
- the sealing material composition of the present invention is applied along at least one peripheral portion of the glass plates 2 and 3.
- a paste-like sealing material composition containing a solvent including a composition containing a partially polymerized methylphenol silicone resin
- a brush, a spray, a disperser, or the like is used for the glass plate 2, 3
- a sealing material composition can be applied to the peripheral portion of the sealing material.
- a molded article of the sealing material composition such as a sheet (including a molded article containing partially polymerized methylphenol silicone resin) is used, the molded article is heated to 180 to 200 ° C in its shape.
- the molded body is arranged on the peripheral edge of the glass plates 2 and 3.
- the application of the sealing material composition of the present invention may be performed using other methods, for example, a spray method, a screen printing method, a spin coating method, or the like.
- the glass plates 2 and 3 are laminated so as to cover the sealing material composition of the present invention, and the sealing material composition is cured by heating.
- the sealing material composition is cured by heating.
- the mixture is heated at 120 ° C. for 1 to 60 minutes to volatilize and remove the solvent.
- the paste is dried at 180 to 200 ° C for several minutes, and then heated to 180 to 200 ° C.
- the glass plates 2 and 3 are laminated so as to cover the sealing material composition of the present invention.
- the sealing material composition is heated at a predetermined temperature condition, for example, at a temperature of 140 ° C. or higher, preferably at a temperature of 180 ° C. to 300 ° C. for 1 to 120 minutes.
- the material is cured by heating. Thereby, the glass plates 2 and 3 are joined.
- the order of the procedure for disposing the pressure holding member 6 on the glass plate 3 and the procedure for applying the sealing material composition of the present invention to the peripheral portions of the glass plates 2 and 3 are not limited to the above-described order. Instead, the procedure of applying the sealing material composition of the present invention to the peripheral portions of the glass plates 2 and 3 may be performed first, or both may be performed in parallel.
- the double-glazed glass 1 shown in Figs. 1 and 2 is a so-called vacuum double-glazed glass, and therefore it is necessary that the gap 10 be kept in a reduced pressure state.
- a method of obtaining a so-called vacuum double-glazed glass in which the gap 10 is maintained in a reduced pressure state (1) a method of joining the glass plates 2 and 3 in a vacuum chamber, and (2) a method of joining the glass plates 2 and 3 After assembling the double-glazed glass 1, there is a method of evacuating the gap 10.
- the glass plates 2 and 3 are joined in a vacuum chamber maintained at a predetermined degree of vacuum, so that when the glass plates 2 and 3 are joined, a gap is formed. It is possible to obtain a so-called vacuum double-glazed glass 1 whose part is maintained at a predetermined degree of vacuum.
- the entire process of manufacturing a double-glazed glass may be performed in a vacuum chamber by performing the step of heating and curing the sealing material composition of the present invention and joining the glass plates 2 and 3 in a vacuum chamber. It is not always necessary to carry out in.
- FIG. 3 is a diagram for explaining the method (2), and is a perspective view of the double-glazed glass 1 after the glass plates 2 and 3 are joined together using the sealing material composition. .
- a hole 8 having a diameter of about 3 mm is formed on the glass plate 2, and a glass exhaust pipe 12 is inserted into the hole 8.
- the exhaust pipe 12 is connected to a vacuum pump (not shown) and is used to evacuate the gap 10 to a predetermined degree of vacuum.
- the exhaust pipe 12 is joined to the inner wall of the hole 8 preferably using the sealing material composition of the present invention. like this Then, the gap 10 is evacuated to a predetermined degree of vacuum, for example, 1.0 ⁇ 10-Torr or less.
- the tip of the exhaust pipe 12 is cut, and the opening of the exhaust pipe 12 is sealed with the lid 14 and the sealing material composition of the present invention.
- the material of the lid 14 is not particularly limited as long as it has sufficient strength and can airtightly seal the opening of the exhaust pipe 12, and glass, metal, ceramics, or the like can be used. However, the exhaust pipe 12 may be melted and sealed without using the lid 14.
- the sealing material composition of the present invention is suitable for bonding the glass constituting the exhaust pipe 12 or the glass plate 2 to the above-described lid material. That is, the sealing material composition of the present invention is capable of bonding these materials at a low temperature, and is excellent in the air-tightness retention of a joint having a high bonding strength.
- FIG. 4 is a view similar to FIG. 3, except that the exhaust pipe 12 is not inserted into the hole 8 formed on the glass plate 2.
- a vacuum pump is directly connected to the hole 8 forming an exhaust hole, and the gap 10 is evacuated to a predetermined degree of vacuum.
- the hole 8 is hermetically sealed using the lid 14 and the sealing material composition of the present invention.
- the hole 8 may be hermetically sealed only with the sealing material composition of the present invention without using the lid 14.
- the sealing material composition of the present invention was prepared, and the characteristics were evaluated. (Example 1)
- the obtained solid sealing agent composition and a solvent were mixed according to the ratio in Table 1. Then, the mixture was mixed to obtain a paste-like sealing composition.
- the applicability when the obtained paste-like sealing material composition was applied on a soda-lime glass substrate using a dispenser was evaluated based on the following evaluation criteria.
- the sealing material composition is a molded body as in Example 5 described later, when the molded body was placed on a glass substrate heated to 180 ° C, the molded body fluidized and spread uniformly. Judgment was based on strength.
- ⁇ The fluidity of the sealing material composition was improved and the coating was able to be applied uniformly.
- the paste-like sealing material composition is applied to an aluminum cup using a dispenser so as to have a thickness of 100 ⁇ to 200 / ⁇ m, heated at 120 ° C for 1 hour to volatilize the solvent, and then removed. After drying at 200 ° C for 5 minutes, the sealing material composition was heated and cured by heating at 200 ° C for 1 hour and at 250 ° C for 1 hour to obtain a test sample. The mass loss when the sample was heated to 300 ° C. was measured using a differential thermobalance (TG-DTA, manufactured by Mac Science). The measurement was performed in dry air, and the heating rate was 10 ° CZmin.
- the evaluation criteria for the evaluation of curability are as follows.
- ⁇ Weight loss of 1% or less when heated to 300 ° C.
- the thickness of the sealing material composition is 100 ⁇ m to 200 ⁇ m on an aluminum cup heated to 180 ° C. After drying at 180 ° C for 10 minutes, the test sample was obtained by heating and curing at 200 ° C for 1 hour and at 250 ° C for 1 hour.
- FIGS. 5 (a) and 5 (b) are plan views showing a glass plate constituting a test sample used for leak evaluation.
- Glass shown in Fig. 5 (a) The plate 20 has dimensions of 100 ⁇ 100 ⁇ 5 mm and is provided with a hole 21 having a diameter of 5 mm at the center.
- the glass plate 30 shown in FIG. 5 (b) has dimensions of 100 ⁇ 100 ⁇ 5 mm and has no holes.
- the glass plates 20, 30 are made of soda-lime glass.
- a paste-like sealing material composition 4 was applied along the outer edge of the glass plate 30 to a width of 15 mm using a dispenser. After heating at 120 ° C for 1 hour to volatilize the solvent and removing it, further drying at 180 ° C for 10 minutes, and then heating to 180 ° C, as shown in Fig. 6, the glass plate 20, 30 were laminated via the sealing material composition 4. In this state, the glass plate 20 was heated and cured at 200 ° C for 1 hour and at 250 ° C for 1 hour while pressing the glass plate 20 from above to prepare a test sample for leak property evaluation, and the presence or absence of leak was measured. .
- the sealing material composition is a molded body as in Example 5 described later
- the sealing material composition is heated along the outer edge of the glass plate 30 while the glass plate 30 is heated to 180 ° C.
- the glass plates 20 and 30 are laminated via the sealing material composition 4 as shown in Fig. 6 while heating to 180 ° C. Was.
- the glass plate 20 was heated and cured at 200 ° C. for 1 hour and at 250 ° C. for 1 hour while pressing the glass plate upward to prepare a test sample for leak evaluation.
- the presence or absence of the leak was measured by the hood method using a UL VAC helium leak detector HELIOT. After initially evacuated background value 1 ⁇ 9 X 10- u Pa'm 3 / s to become until the test piece, the helium gas is introduced into the hood, of leak rate of 10 minutes helium gas Then, the maximum value of the helium gas leak rate was recorded to confirm the presence or absence of a leak. Table 1 shows the above evaluation results. As is clear from Table 1, no leak was observed in any of the three test samples in which the thickness of the sealing material composition 4 was different.
- the end portions (10 mm x 3 mm) of soda-lime glass plates (10 mm x 100 mm x 6 mm) 50 and 51 are bonded together using sealing material composition 4 to evaluate the adhesion to glass.
- Seal material composition 4 to evaluate the adhesion to glass.
- the application, drying and heat-curing of the paste-like sealing material composition, and the placing, drying and heat-curing of the sealing material composition of the molded product were evaluated for leak property. The procedure was performed in the same manner as described above.
- a tensile test was performed using Tensilon (manufactured by Orientec) in the same procedure as in JIS K6850, and the adhesive strength of the sealed portion was measured. The tensioning speed was 5 mm / min.
- Example 2 A sealing material composition was prepared in the same manner as in Example 1 except that a spherical filler having an average particle diameter of 3 ⁇ m was used, and the obtained sealing material composition was evaluated. . The results are shown in Table 1.
- Example 3 A sealing material composition is prepared in the same manner as in Example 1 except that a spherical filler having an average particle size of 5 ⁇ m is used, and the obtained sealing material composition is evaluated. The results are shown in Table 1.
- Example 4 A sealing material composition is prepared in the same manner as in Example 1 except that a spherical filler having an average particle size of 10 m is used, and the obtained sealing material composition is evaluated. The results are shown in Table 1.
- Example 5 In the same manner as in Example 1, evaluation is performed using the created sealing material composition. However, in Example 5, the sealing material composition was partially polymerized according to the procedure of Example 1, and the resultant was poured into a fluoroplastic mold to be molded into a desired shape, thereby obtaining a molded product of the sealing material composition. use.
- Example 6 As shown in Table 1, the same as Example 5 except that 15 parts by mass of a curable methylphenyl silicone resin and 85 parts by mass of spherical silica having a particle size of 1 m were blended. Was carried out. Table 1 shows the results. Since the composition contained a large amount of 85 parts by mass of the filler, it had poor fluidity and poor coatability. In addition, the adhesive strength to glass was weak, and the film was peeled off before the evaluation of the leak property and the evaluation of the adhesion to glass, so that these evaluations could not be carried out.
- Example 7 The same operation as in Example 5 was performed, except that a resin prepared from only a trifunctional silicon monomer was used as a curable methylphenol silicone resin. The results are shown in Table 1. This composition was peeled off before the evaluation of the leakiness and the evaluation of the adhesiveness to glass, where the adhesion strength to glass was weak, and these evaluations could not be carried out.
- Example 8 In Examples 8 and 9, in place of the sealing composition of the present invention, a conventional low-melting glass sealing material (Example 8: DT430, manufactured by Asahi Techno Glass Co., Ltd., Example 9: The evaluation is performed in the same manner as in Example 1 using a glass frit prepared by adding a solvent and a binder to form a paste. However, in Examples 8 and 9, the evaluation of glass adhesion was not performed.
- the sealing temperature is 430 ° C. in Example 8, and 520 ° C. in Example 9. Table 1 shows the results.
- the glass plates were bonded together in a vacuum chamber to produce a so-called vacuum multi-layer glass as shown in FIGS. 1 and 2.
- the dimensions of lime glass are as follows. Glass plate 2: 306mm X 306mm X 3mm
- the dimensions of the glass plates 2 and 3 are different here because the glass plate 2 disposed above in the vacuum chamber has a fixing allowance to the hot plate.
- the paste-like sealing material composition containing the solvent obtained in Example 1 was applied on a glass plate 3 using a dispenser, and the column-shaped sealing material having a diameter of 500 / ⁇ and a height of 200 m was applied. A plurality of pressure holding members 6 were formed so that the interval between them was 20 mm. Specifically, the paste-like sealing material composition containing the solvent obtained in Example 1 was placed on a glass plate 3 using a dispenser so as to form a column having a diameter of 500 m and a height of 200 ⁇ m. Apply multiple coats with a spacing of 20 mm, 120. After heating for 1 hour to remove the solvent by volatilization, further drying at 180 ° C for 10 minutes, and then heating at 200 ° C for 30 minutes and 250 ° C for 30 minutes, the sealing material composition was heat-cured to form a pressure holding member 6.
- the paste-like sealing material composition containing the solvent obtained in Example 1 was applied along the periphery of the glass plate 3 using a dispenser, and was about 3 mm wide and 200 m thick. A sealing material composition layer was formed. After heating the glass plate 3 at 120 ° C. for 1 hour to volatilize and remove the solvent, the glass plates 2 and 3 were fixed to the upper plate and the lower plate of a hot plate arranged in a vacuum chamber, respectively. from and vacuum inside the vacuum chamber to a vacuum degree 1. 0 X 10- 2 Torr or less.
- the glass plates 2 and 3 are laminated so as to cover the sealing material composition layer, and the glass plate 2 is pressed at 200 ° C while pressing the glass plate 2 from above. 1 hour, 230 ° heated for 1 hour in C, and by bonding a glass plate 2, 3 to each other by cured by heating the sealing material composition layer, the gap portion 10 is vacuum 1.
- 0 X 10- 2 A so-called vacuum double-glazed glass 1 maintained at a reduced pressure of Torr or less was produced.
- the glass plates 2 and 3 are joined together under atmospheric pressure without using a vacuum chamber.
- the gap 10 is evacuated to a desired degree of vacuum using the exhaust hole 8 to produce a so-called vacuum double-glazed glass 1.
- the dimensions of the glass plates 2 and 3 (made of soda-lime glass) used in the present embodiment are as follows.
- a hole 8 having a diameter of 3 mm is formed in the glass plate 2.
- the paste-like sealing material composition containing the solvent obtained in Example 1 was formed into a cylindrical shape having a diameter of 500 ⁇ m and a height of 200 ⁇ m using a dispenser. Are applied to the glass plate 3 at intervals of 20 mm, and heated at 120 ° C. for 1 hour to volatilize the solvent and to remove the solvent. Further, after drying at 180 ° C for 10 minutes, heating is performed at 200 ° C for 30 minutes and at 250 ° C for 30 minutes to heat and cure the sealing material composition to form a plurality of cylindrical pressure holding members 6. .
- the paste-like sealing material composition containing the solvent obtained in Example 1 was applied along the periphery of the glass plate 3 using a dispenser, and was about 3 mm wide and 200 m thick.
- a sealing material composition layer is formed. Heat the glass plate 3 at 120 ° C for 1 hour to volatilize the solvent and remove it. Next, fix the glass plates 2 and 3 to the upper plate and lower plate of the hot plate, respectively. After drying at 180 ° C in this state for 10 minutes, the glass plates 2 and 3 are laminated so as to cover the sealing material composition layer, and the glass plate 2 is pressed at 200 ° C for 1 hour while also applying an upward force. The glass plates 2 and 3 are joined by heating at 250 ° C. for 1 hour to heat and cure the sealing material composition layer. However, in the present embodiment, all of these steps are performed under an atmospheric pressure that is not in a vacuum chamber.
- a paste-like sealing material composition containing the solvent obtained in Example 1 was applied to the joining surfaces of the glass plate 3 and the stainless steel pressure holding member 6 using a dispenser. Then, the mixture is heated at 120 ° C. for 1 hour to volatilize and remove the solvent. Dry at 180 ° C for 10 minutes After drying, the pressure holding member 6 is arranged at a predetermined position on the glass 3 so as to cover the applied sealing material composition. In this state, the pressure holding member 6 is heated at 200 ° C. for 30 minutes and 250 ° C. for 30 minutes while also applying an upward force, and the sealing material composition is heated and hardened to form a glass plate 3 made of stainless steel. The pressure holding member 6 is joined.
- the pressure holding member 6 was implemented in the same manner as in Example 2 except that spherical glass beads (made of soda-lime glass) having a diameter of 200 m were used as the pressure holding member. There making vacuum 1. 0 X 10- 2 Torr so-called vacuum double glazing 1 held below.
- the procedure for joining the glass pressure holding member 6 to the glass plate 3 is performed in the same manner as in the third embodiment.
- the remaining procedure ie, the procedure of joining the glass plates 2 and 3 using the sealing material composition of the present invention, and the use of the exhaust hole 8 to reduce the gap 10 to a degree of vacuum of 1.0 ⁇ 10 ′′ 2 To rr or less
- the procedure of evacuating to a vacuum and sealing the exhaust hole 8 using the sealing material composition of the present invention is performed in the same manner as in Example 2.
- Japanese Patent Application No. The entire contents of the specification, claims, drawings and abstract of Patent Application No. 2004-121399 are hereby incorporated by reference as the disclosure of the specification of the present invention.
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Abstract
Description
Claims
Priority Applications (1)
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JP2006512381A JPWO2005100278A1 (ja) | 2004-04-16 | 2005-04-14 | 複層ガラスおよびその製造方法 |
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JP2020511384A (ja) * | 2017-03-03 | 2020-04-16 | ダウ シリコーンズ コーポレーション | 透明ユニット |
Citations (4)
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JP2000063630A (ja) * | 1998-08-21 | 2000-02-29 | Nippon Chem Ind Co Ltd | 微細球状シリカ及び液状封止樹脂組成物 |
JP2001207152A (ja) * | 2000-01-28 | 2001-07-31 | Minoru Yamada | 封着用材料および封着されたガラス構造体 |
JP2002088262A (ja) * | 2000-09-18 | 2002-03-27 | Daicel Chem Ind Ltd | 難燃性樹脂組成物 |
JP2002114542A (ja) * | 2000-10-04 | 2002-04-16 | Central Glass Co Ltd | 複層ガラスの製造方法 |
-
2005
- 2005-04-14 JP JP2006512381A patent/JPWO2005100278A1/ja not_active Withdrawn
- 2005-04-14 WO PCT/JP2005/007262 patent/WO2005100278A1/ja active Application Filing
Patent Citations (4)
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JP2000063630A (ja) * | 1998-08-21 | 2000-02-29 | Nippon Chem Ind Co Ltd | 微細球状シリカ及び液状封止樹脂組成物 |
JP2001207152A (ja) * | 2000-01-28 | 2001-07-31 | Minoru Yamada | 封着用材料および封着されたガラス構造体 |
JP2002088262A (ja) * | 2000-09-18 | 2002-03-27 | Daicel Chem Ind Ltd | 難燃性樹脂組成物 |
JP2002114542A (ja) * | 2000-10-04 | 2002-04-16 | Central Glass Co Ltd | 複層ガラスの製造方法 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2020511384A (ja) * | 2017-03-03 | 2020-04-16 | ダウ シリコーンズ コーポレーション | 透明ユニット |
US10907401B2 (en) | 2017-03-03 | 2021-02-02 | Dow Silicones Corporation | Transparent unit |
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JPWO2005100278A1 (ja) | 2008-03-06 |
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