JP2001026484A - Hydraulic composition form - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hydraulic composition form which is a hardened body that is obtained from a hydraulic composition and concurrently provided with both machinable performance and wear resistance, and can be applied to such a part that high wear resistance is required, and also can easily be formed. SOLUTION: The forming process of the form comprises: preparing a hydraulic composition containing hydraulic powder, non-hydraulic powder having an average particle size of <=1/10 of the average particle size of the hydraulic powder, a formable performance improver, a machinable performance improver and a thickener; subjecting the hydraulic composition to extrusion to form the form: subjecting the form to curing and hardening to obtain a hardened form; and forming a metal coating film or a metal compound coating film on the surface of the hardened form; wherein desirably, this hydraulic composition contains 100 pts.wt of a mixed powder consisting of 40-80 wt.% of hydraulic powder, a 10-50 wt.% of non-hydraulic powder having an average particle size of <=1/10 of the average particle size of the hydraulic powder and 10-20 wt.% of a formable performance improver, 2-9 pts.wt. of a machinable performance improver and 0.5-5 pts.wt. of a thickener.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a hydraulic composition molded article.

[0002]

2. Description of the Related Art Conventionally, metal materials have been widely used as materials for mechanical parts by making use of their excellent various material properties. In order to make up for the drawbacks, many mechanical parts using non-metallic materials such as sintered ceramics and plastics are also used.

However, with the progress of technological innovation, conventional materials cannot meet all of various needs at present, and materials that can be used for mechanical parts having new characteristics are demanded.

In order to meet such demands, new materials have been developed, and various techniques for forming a high-strength cured body from a hydraulic composition and applying the same to machine parts have been disclosed. For example, Japanese Unexamined Patent Publication (Kokai) No. 61-215239 discloses an ultra-high-strength mortar and concrete formed from a composition mainly composed of a cementitious substance and an ultrafine powder, a high-performance water reducing agent, water and aggregate. ing. In addition, Japanese Unexamined Patent Publication
JP-A-2-52157 describes a high-strength cured product obtained by incorporating metal particles into a cementitious composition, and JP-A-3-137047 discloses a composite of a cementitious substance and a polymer. Has been described. However, these hardened materials have not been put to practical use due to the brittleness and workability of the hardened cementitious materials.

The inventors of the present invention have conducted various studies to solve such problems, and as a result, have found that hydraulic powders and non-hydraulic powders having an average particle diameter at least one digit smaller than the average particle diameter of the hydraulic powders. A molded product obtained by using a hydraulic composition in which a hydraulic powder, a workability improving material, a formability improving agent, etc. are combined has excellent properties that can be used as a machine component such as a paper feed roller component. And filed a patent application (Japanese Patent Application No.
-28137, Japanese Patent Application No. 11-59310).

However, in order to apply these cured products of the hydraulic composition to mechanical parts requiring higher wear resistance, it is necessary to further improve the surface hardness.
In addition, the need for mechanical parts is not only abrasion resistance, but also, for example, conductivity, magnetic properties, electromagnetic wave shielding properties, heat shielding properties, etc., and the conventional hydraulic composition molded products satisfy these requirements. Is impossible.

[0007]

SUMMARY OF THE INVENTION The main object of the present invention is to:
Hydraulic composition molding that imparts machining performance and abrasion resistance simultaneously to the cured product obtained from the hydraulic composition, can be applied to parts where abrasion resistance is required, and is easy to mold. Is to provide the body.

[0008] Another object of the present invention is to provide a molded article obtained from the hydraulic composition, if necessary, with an additional conductivity,
It is to provide various properties such as electromagnetic wave shielding property, optical property, heat shielding property, decorative property and the like.

[0009]

Means for Solving the Problems The present inventor has conducted intensive studies in order to achieve the above-mentioned objects, and as a result, has found that the hydraulic powder has an average particle diameter of 1/10 or less of the hydraulic powder. A hydraulic composition containing a non-hydraulic powder having an average particle size, a moldability improver, a processability improver, and a thickener has excellent extrudability, and after extruding it, it is cured. The molded product obtained by curing has excellent workability, dimensional stability, and the like.By forming a metal film or a metal compound film on the surface of the molded product, the molded product has excellent machining performance, It is possible to obtain a molded body with improved abrasion,
Further, by selecting the type of metal film or metal compound film to be formed, the molded body, the conductivity, magnetic properties,
It has been found that it is also possible to impart various properties such as an electromagnetic wave shielding property and a heat shielding property, and the present invention has been completed.

That is, the present invention provides the following hydraulic composition molded article. 1. Hydraulic composition comprising hydraulic powder, non-hydraulic powder having an average particle size of 1/10 or less of the average particle size of the hydraulic powder, moldability improver, processability improver and thickener A hydraulic composition molded article comprising a molded article obtained by extrusion molding and curing and curing, on the surface of which a metal film or a metal compound film is provided. 2. The hydraulic composition is 40 to 80% by weight of the hydraulic powder, 10 to 50% by weight of the non-hydraulic powder having an average particle size of 1/10 or less of the average particle size of the hydraulic powder, and the moldability is improved. Agent 10
Item 1. The hydraulic composition according to the above item 1, comprising 100 parts by weight of a mixed powder consisting of 20 to 20% by weight, 2 to 9 parts by weight of a processability improver, and 0.5 to 5 parts by weight of a thickener. Molded body. 3. Processability improver, vinyl acetate resin, vinyl acetate acrylic copolymer resin, vinyl acetate veoba copolymer resin, vinyl acetate malate copolymer resin, vinyl acetate ethylene copolymer resin, vinyl acetate ethylene vinyl chloride copolymer resin, Item 3. The above item 1 or 2, which is at least one resin selected from an acrylic copolymer resin, an acrylic styrene copolymer resin, an acrylic silicone copolymer resin, a vinyl acetate veova terpolymer resin and an epoxy resin. Hydraulic composition molded article. 4. Item 4. The hydraulic composition molded article according to any one of Items 1 to 3, wherein the moldability improving agent is talc. 5. The water according to any one of items 1 to 4, wherein the metal film or the metal compound is formed by wet plating, thermal spray plating, vacuum deposition, sputtering, chemical vapor deposition, ion plating or activation reactive vapor deposition. A molded article of a hard composition. 6. Item 6. The hydraulic composition molded product according to any one of Items 1 to 5, wherein the method for curing the molded product is natural curing, steam curing, or autoclave curing.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, as a hydraulic composition for producing a molded article, a hydraulic powder, a non-hydraulic powder,
A composition containing a moldability improver, a processability improver and a thickener is used.

Hereinafter, each component to be added to the hydraulic composition used in the present invention and a method for producing a molded article using the composition will be described. Hydraulic composition (1) Hydraulic powder: The hydraulic powder used in the present invention is a powder that hardens upon contact with water, for example, calcium silicate, calcium aluminate, calcium fluoroaluminate, calcium Examples include powders such as sulfoaluminate, calcium aluminoferrite, calcium phosphate, hemihydrate or anhydrous gypsum, quicklime having self-hardening property, and powders of a mixture of two or more of these powders. A typical example thereof is powder such as Portland cement. The hydraulic powder can be used alone or in combination of two or more.

The hydraulic powder has an average particle size of 10 to 40 μm.
It is preferable that the plain specific surface area is 2500 cm ² / g or more in order to secure hydraulic performance with respect to the strength of the molded body.

The amount of the hydraulic powder to be blended is suitably about 40 to 80% by weight, with the total amount of the hydraulic powder, the non-hydraulic powder and the moldability improving material being 100% by weight. ,
It is preferable to be about 45 to 55% by weight. If the amount of the hydraulic powder is too small, the strength, the filling ratio, etc., will be low.On the other hand, if the amount of the hydraulic powder is too large, the filling ratio for obtaining a molded article will be low, In either case, it is not preferable because there is an effect such as inability to withstand the processing stress at the time of machining. (2) Non-hydraulic powder The non-hydraulic powder used in the present invention is a powder that does not harden even when it comes into contact with water by itself, and its components are in an alkaline or acidic state or a high-pressure steam atmosphere. Which elutes and reacts with other already-eluted components to form products. Specific examples of the non-hydraulic powder include calcium hydroxide powder, gypsum powder, calcium carbonate powder,
Slag powder, fly ash powder, silica stone powder, clay powder, silica fume powder and the like can be mentioned. The non-hydraulic powder can be used alone or as a mixture of two or more.

It is necessary that these non-hydraulic powders have an average particle diameter of 1/10 or less of the average particle diameter of the hydraulic powder, and preferably have an average particle diameter of 1/100 or less. . There is no particular limitation on the lower limit of the average particle size,
It is sufficient that the effects of the present invention are not impaired.
The average particle diameter of the hydraulic powder is preferably about 1/500 or more. If the average particle diameter is less than about 1/500, the fluidity is reduced and the moldability is likely to be reduced. By using a non-hydraulic powder having such a particle size, it is possible to increase the filling rate during molding of the molded body, reduce the porosity of the molded body obtained, and improve the dimensional stability of the molded body. Can be done.

The mixing amount of the non-hydraulic powder is suitably about 10 to 50% by weight, with the total amount of the hydraulic powder, the non-hydraulic powder and the moldability improving agent being 100% by weight. ,
It is preferable to set it to about 20 to 30% by weight. If the amount of the non-hydraulic powder is too small, the filling rate is low, while if the amount of the non-hydraulic powder is too high,
The strength and filling rate are reduced, and in any case,
It is not preferable because various physical properties after curing, such as occurrence of chipping during mechanical processing and dimensional stability, are adversely affected. In consideration of mechanical strength, it is preferable to adjust the blending amount of the non-hydraulic powder so that the filling rate does not become too low. (3) Formability improver: The formability improver used in the present invention improves the slipperiness between a mold and a molded body when a molded body is extruded from a hydraulic composition. It is a material that functions to reduce the anisotropy of the molded product and stabilize the quality. For example, plate-like substances such as talc (hydrated magnesium silicate) and mica can be used as the formability improver.
Such a plate-like substance is excellent in orientation, and imparts lubricity to the surface of a molded article, reduces resistance to a die, and facilitates extrusion molding. Further, the anisotropy of the quality of the molded article can be reduced, and the quality of the molded article can be stabilized.

The compounding amount of the moldability improver is suitably about 10 to 30% by weight, with the total amount of hydraulic powder, non-hydraulic powder and moldability improving material being 100% by weight.
It is desirable that the content be about% by weight. If the amount of the moldability improver is too small, the slipperiness of the molded body is reduced,
The resistance to the molding frame increases, and the molding accuracy decreases. Further, the anisotropy of the molded product is increased, which adversely affects mechanical strength, dimensional stability, and the like, which is not preferable. (4) Workability improver: A workability improver is a material having properties that contribute to the improvement of moldability, mold release, cutting / grindability, grinding accuracy, etc. of a molded article formed from a hydraulic composition. In particular, it is an effective material for improving cutting / grindability and grinding accuracy.

According to the hydraulic composition containing such a processability improver, the formability is improved by exhibiting the function of the processability improver as a molding aid during pressure molding. By the property improver, the fragility of the cement-based cured product is improved, and the obtained molded product is released from the mold without any damage at the time of demolding, leading to improvement in workability. In addition, a molded body obtained from a hydraulic composition which is a brittle material exhibits a cutting state of a crack type mechanism during cutting, and material cracking, chipping and the like become a problem, but a workability improving agent is compounded. Thereby, toughness for promoting machinability as a solid material is imparted to the obtained molded body, and cracking, chipping, and the like of the molded body can be prevented. For this reason, conventional
It is possible to improve the workability of molded products obtained from hydraulic compositions, which were difficult to machine such as grinding, to the same level as metal materials, cutting using a lathe, grinding using a cylindrical grinder Can be performed to the same degree as that of a metal material, and precise processing on the order of μm can be performed for desired dimensions.

Examples of the processability improver usable in the present invention include vinyl acetate resin, copolymer resin containing vinyl acetate, acrylic resin, copolymer resin containing acrylic,
Examples thereof include styrene resins, copolymer resins containing styrene, and epoxy resins. Among these, as the copolymer resin containing vinyl acetate, vinyl acetate acrylic copolymer resin, vinyl acetate veoba copolymer resin, vinyl acetate malate copolymer resin, vinyl acetate ethylene copolymer resin, vinyl acetate ethylene chloride Examples thereof include a vinyl copolymer resin and a vinyl acetate veova terpolymer resin. Examples of the copolymer resin containing an acrylic monomer include an acryl-vinyl chloride-vinyl acetate copolymer resin, an acryl styrene copolymer resin, and an acryl silicone copolymer resin. Examples of the styrene-containing copolymer resin include a styrene-butadiene copolymer resin. These processability improvers can be used alone or in combination of two or more. The processability improver can be used in the form of a powder, an emulsion or the like, and the particle size is usually 1 as a single particle size.
Those having a size of about μm or less are preferable.

The compounding amount of the processability improver is 2 to 9 parts by weight as the solid content of the processability improver per 100 parts by weight of the total of the hydraulic powder, the non-hydraulic powder and the formability improver. Parts by weight, more preferably about 6 to 8 parts by weight. If the compounding amount of the processability improver is too small, the cutting processability is deteriorated, which is not preferable. On the other hand, if the amount of the processability improver is too large, the moldability is improved, but the grinding accuracy and the dimensional stability after the grinding are unfavorably reduced. (5) Thickener: A thickener is a material that exhibits tackiness when dissolved in water, increases the bonding force between hydraulic powder and non-hydraulic particles, and maintains the shape after molding. It is an effective component for maintaining water retention and forming a solid cured product.

Examples of the thickener that can be used in the present invention include methyl cellulose, hydroxyethyl cellulose,
Carboxymethyl cellulose and the like can be exemplified. The amount of the thickener used is suitably about 0.5 to 5 parts by weight based on 100 parts by weight of the total of the hydraulic powder, the non-hydraulic powder and the moldability improver. It is preferably about 4 parts by weight. If the compounding amount of the thickener is too small, cracks at the end of the extruded product, it is easy to adversely affect moldability such as surface roughening, while, if the thickener is too large, the shrinkage amount after curing is reduced. It is not preferable because the dimensional stability of the product is easily reduced, such as increase. Manufacturing method of molded article (1) Molding method: In order to produce a molded article using the above-mentioned hydraulic composition, first, if necessary, water is added to each of the above-mentioned components and mixed, followed by extrusion molding. .

The amount of water is 10 parts by weight with respect to 100 parts by weight of the total amount of the hydraulic powder, the non-hydraulic powder and the moldability improver.
About 30 parts by weight.
It is preferable that the amount is about parts by weight. If the amount of water is too small, molding becomes difficult, cracks and the like are likely to occur on the surface of the molded body, and the mechanical properties of the molded body after molding and curing are also apt to deteriorate, which is not preferable. On the other hand, if the amount of water is too large, it is difficult to maintain the shape during molding, and the cured product tends to shrink after molding and curing, and the dimensional stability is undesirably reduced.

The mixing method is not particularly limited, as long as each component of the hydraulic composition can be uniformly mixed. The hydraulic powder and a non-hydraulic powder having an average particle size of 1/10 or less of the hydraulic powder are used. In order to uniformly mix the composition containing the hydraulic powder, it is preferable to employ a mixing method capable of applying a strong shearing force. For example, kneading may be performed using a kneader or the like. Mixing using such a mixer having a high shearing force can reduce the time required for mixing.

Further, after mixing, the mixture may be granulated to a size suitable for the shape to be molded in order to improve the handling of the mixture during molding. As the granulation method, a known method such as a tumbling granulation method, a compression granulation method, and a stirring granulation method may be employed.

The hydraulic composition having the specific composition described above has excellent extrudability, and can be easily formed into a predetermined shape by extrusion according to a conventional method. it can.

For example, as an example of an extrusion molding method, a material mixed and kneaded by a kneader is put into an extruder, and while the material is degassed by a vacuum pump, the extrusion pressure is 30 kg / cm ² to 1 kg.
It may be extruded at 00 kg / cm ² . (2) Curing method: After pressure molding, take out from the mold,
Curing and curing until a cured body with sufficient strength is obtained. As the curing method, it may be left at room temperature as it is, or steam curing may be performed.
Curing in an autoclave is preferred. Further, when the amount of water for forming the cured product is missing or insufficient, it is preferable to perform steam curing.

The autoclave curing has a saturated vapor pressure of 7.1.
It is preferably performed at 5 kg / cm ² or more and 165 ° C. or more, and more preferably at a saturated vapor pressure of 9.10 kg / cm ² or more. The curing time depends on the curing temperature,
For example, when curing at 175 ° C, usually 5 to 15
Curing should be done for about an hour. In addition, it is preferable that the compression strength is about 5 N / mm ² or more after the pressure molding and before the start of the autoclave curing. If sufficient strength is not developed before the start of autoclave curing, there is a possibility that a molded article may explode during autoclave curing, which is not preferable.

The steam curing may be performed, for example, at a temperature of about 60 ° C. for about 10 to 24 hours.

The molded article obtained by the above-described method has
It has good properties such as mold release, cutting, grinding, and grinding accuracy, and can be easily formed and processed into various shapes. According to the present invention, by forming a metal film or a metal compound film on the surface of such a molded body, it is possible to improve the surface hardness of the molded body and to impart wear resistance to the molded body. it can. Furthermore, various characteristics such as electromagnetic wave shielding, optical characteristics, heat shielding, and decorativeness can be imparted according to the type of film to be formed.

The method for forming the metal film or metal compound film is not particularly limited, and various known methods can be applied. Examples of such a method include wet plating, thermal spray plating, vacuum deposition, sputtering, chemical vapor deposition, ion plating, and activation reactive vapor deposition (ARE method).

The metal film or metal compound film may be formed according to a method to be adopted according to a conventional method, and there is no particular limitation on the type of the film, and a metal film or metal compound film that can be formed by a known method. Therefore, the type may be appropriately determined according to the purpose of use. Examples of the metal compound film include films of metal oxides, metal nitrides, metal carbides, metal borides, and the like. The thickness of the film is not particularly limited, and may be appropriately selected depending on the purpose of use.

For example, in order to form a plating film by a wet plating method, electroless plating may be performed to impart conductivity to the surface of the hydraulic composition molded body, and then electroplating may be performed. Can be performed according to a conventional method, for example, a sensitizer-activator method,
By a known method such as a catalyst method, a catalyst for electroless plating is applied to the surface of the molded body, an electroless copper plating solution,
The electroless plating film may be formed using a known electroless plating solution such as an electroless nickel plating solution. Although the thickness of the electroless plating film is not particularly limited, for example, in order to impart appropriate conductivity, 0.2 to 0.5
It may be about μm.

Next, a plating film is formed by an electroplating method. The type of the electroplating solution is not particularly limited, and may be appropriately selected from known electroplating solutions according to the purpose, and may be, for example, a nickel plating solution, a copper plating solution, or the like.

Usually, since the electroless plating film has a small thickness, it is preferable to avoid performing electroplating at a high current density at one time. For example, a copper film having a relatively low current density of about 0.5 A / dm ² is preferably used. It is preferable to form a plating film or a nickel plating film in a thickness of about 1 to 3 μm and use this as a base plating, for example, to form a nickel plating film or the like in a thickness of about 5 to 20 μm. Also, if necessary, 5 to 20 μm
It is possible to form a chrome plating film or the like having a thickness of about the uppermost layer.

The coating of a metal compound such as a metal oxide, a metal nitride, a metal carbide, or a metal boride can be formed by a spraying method such as flame spraying, plasma spraying, or explosive spraying.
It can be formed according to known conditions.

[0036]

As described above, the molded article of the hydraulic composition having the metal film or the metal compound film of the present invention has a higher surface hardness than the molded article of the conventional hydraulic composition. Good. In addition, it has excellent characteristics such as moldability, mold release, machinability, grindability, and grinding accuracy, and can be easily formed and processed into various shapes. Further, by selecting the type of the film, various characteristics such as conductivity, electromagnetic wave shielding, optical characteristics, heat shielding, and decorativeness can be provided, and application to electromechanical parts is also possible.

Therefore, according to the present invention, the present invention can be applied to a part where abrasion resistance is required.
A molded article of a hydraulic composition having various properties such as electromagnetic wave shielding properties, optical properties, heat shielding properties, and decorative properties can be produced at low cost.

[0038]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on embodiments.

(Example 1) FIG. 1 is a sectional view of a hydraulic composition molded article having a plating layer according to the present invention. In the figure, 1 is a hydraulic composition molded article, and 2 is a catalyst layer (palladium). ), 3 is a nickel layer formed by an electroless plating method,
Denotes a base nickel plating layer formed by an electroplating method, and 5 denotes a nickel plating layer formed by an electroplating method. Hereinafter, a method for producing this cured product will be described.

80 parts by weight of Portland cement (average particle size of about 15 μm) as a hydraulic powder, 10 parts by weight of silica fume (average particle size of about 0.2 μm) as a non-hydraulic powder, and a moldability improver 20 to 30 parts by weight of water is added to a hydraulic composition containing 10 parts by weight of talc, 10 parts by weight of an acrylic resin as a processability improver, and 2 parts by weight of carboxymethyl cellulose as a thickener, and mixed by a kneader. did.

The mixture was degassed using a vacuum pump and extruded at a pressure of 100 kg / cm ² by an extruder.
Formed to 0 × 30 × 500 mm, heated to 175 ° C. and 9.1 atm at a heating rate of 50 ° C./hour, 175 ° C.
After maintaining at 9.1 atm for 7 hours, the autoclave was cured by returning to atmospheric pressure in 3 hours. After curing, it was cut to a width of 10 mm to obtain a molded body 1 of 30 × 30 × 10 mm.

As a catalyst solution for electroless plating, a catalyzer (a solution in which tin ion and palladium ion were mixed) was used. The molded article 1 was immersed in the catalyzer solution at room temperature for 5 minutes, washed with water, and then immersed in an aqueous sulfuric acid solution. Then, palladium 2 was applied to the surface portion (30 × 30 mm) of the molded body 1 as a catalyst for electroless nickel plating.

Next, the molded body 1 was placed in an electroless nickel plating bath (aqueous solution containing nickel sulfate, sodium citrate, sodium phosphite and ammonia) at 30 ° C.
For 5 minutes to form an electroless nickel layer 3 having a thickness of 0.5 μm on the surface of the molded body.

Subsequently, using a nickel electroplating solution (aqueous solution containing nickel sulfate, nickel chloride and boric acid), nickel electroplating was performed at a cathode current density of 0.5 A / dm ² to obtain a nickel plating of 2 μm in thickness. The layer 4 was formed, and further, electroplating was performed at a current density of 1 A / dm ² using the same electronickel plating solution to form a nickel plating layer 5 having a thickness of 15 μm.

(Example 2) In the same manner as in Example 1, a palladium catalyst layer 2, an electroless nickel layer 3, an underlying nickel plating layer 4 by electroplating, A nickel plating layer 5 was formed by a plating method.

Thereafter, a chromium plating solution (175 g / l chromic acid and 0.7 g / l sulfuric acid) was applied to the nickel plating surface.
Was applied at a liquid temperature of 60 ° C. and a cathode current density of 50 A / dm ² for 10 minutes to form a hard chrome layer 6 having a thickness of 20 μm.

FIG. 2 is a cross-sectional view of the thus obtained molded body.

(Example 3) After producing a hydraulic composition molded body 1 in the same manner as in Example 1, the surface of the molded body 1 is made of a mixture of Al ₂ O ₃ and TiO ₂ by the explosive spraying method. The coating layer 7 was formed.

The formed film had a melting point of 1700 ° C. or more and a film thickness of Al ₂ O ₃ : TiO ₂ (weight ratio) = 4: 1.
It was an oxide film of 0 μm. Surface hardness test: Table 1 shows the results of measuring the surface hardness of the molded articles obtained in Examples 1 to 3 by a Vickers hardness test. For comparison, Table 1 also shows the surface hardness of the molded body of the hydraulic composition having no plating film formed.

Table 1 Surface Treatment Method Surface Hardness (HV ) Example 1 Nickel Plating 520 Example 2 Nickel Plating + Chromium Plating 940 Example 3 Al ₂ O ₃ + TiO ₂ 1150 Comparative Example No Treatment 40

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a molded body on which a nickel plating film is formed in Example 1.

FIG. 2 is a cross-sectional view of a molded body on which a nickel plating film and a chromium plating film are formed in Example 2.

FIG. 3 is a cross-sectional view of a formed body in which a coating layer made of a mixture of Al ₂ O ₃ and TiO ₂ is formed in Example 3.

[Explanation of symbols]

1 consists of a mixture of the cured body 2 catalyst layer 3 electroless nickel plating layer 4 nickel electroplating layer 5 nickel electroplating layer 6 chrome plating layer 7 Al ₂ O ₃ and TiO ₂ in the hydraulic composition coating layer

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Satoshi Ozawa 585 Tomicho, Funabashi-shi, Chiba Sumitomo Osaka Cement Co., Ltd. Construction Materials Division (72) Inventor Yasuhiko Shimada 585 Tomicho, Funabashi-shi, Chiba Sumitomo Osaka Cement F-term in the building materials division (reference) 4G012 PB04 PB06 PB31 PB40 4G028 DA01 DB07 DC00

Claims (6)

[Claims] 1. A hydraulic powder, having an average particle size of 1
Surface of molded article obtained by extruding a hydraulic composition containing a non-hydraulic powder having an average particle size of / 10 or less, a moldability improver, a processability improver, and a thickener, curing and curing. A hydraulic composition molded article provided with a metal film or a metal compound film. 2. The hydraulic composition has a hydraulic powder content of 40 to 80% by weight and a non-hydraulic powder having an average particle size of 1/10 or less of the average particle size of the hydraulic powder. 100 parts by weight of a mixed powder composed of 10% by weight and a formability improver of 10 to 20% by weight,
The hydraulic composition molded product according to claim 1, comprising 2 to 9 parts by weight of a processability improver and 0.5 to 5 parts by weight of a thickener. 3. The processability improver is a vinyl acetate resin, a vinyl acetate acrylic copolymer resin, a vinyl acetate veova copolymer resin, a vinyl acetate malate copolymer resin, a vinyl acetate ethylene copolymer resin, a vinyl acetate ethylene vinyl chloride. 2. The resin according to claim 1, which is at least one resin selected from a copolymer resin, an acrylic copolymer resin, an acrylic styrene copolymer resin, an acrylic silicone copolymer resin, a vinyl acetate veova terpolymer resin and an epoxy resin. Or the molded product of the hydraulic composition according to 2. 4. A process according to claim 1, wherein said moldability improving agent is talc.
The hydraulic composition molded article according to any one of the above. 5. The method according to claim 1, wherein the metal film or the metal compound is wet-plated,
The hydraulic composition molded article according to any one of claims 1 to 4, which is formed by thermal spray plating, vacuum deposition, sputtering, chemical vapor deposition, ion plating or activation reactive vapor deposition. 6. The hydraulic composition molded article according to claim 1, wherein the curing method of the molded article is natural curing, steam curing or autoclave curing.