JPS63107547A - Glazed cement honeycomb panel - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a cementitious honeycomb panel having an oiled cementitious face plate. More specifically, the present invention relates to an oiled honeycomb panel constructed of a thin cementitious honeycomb mainly composed of cement and aggregate, a honeycomb structure contact point of 14 construction materials, and a cementitious surface plate bonded with a cement adhesive.

[Prior art and its problems] Gold ri on both sides of honeycomb core material? 4 (aluminum etc.)
Honeycomb sandwich structures with surface materials such as FRP, plywood, and inorganic boards (asbestos-cement temporary, etc.) are lightweight (because the space volume is extremely large), and have strong strength and rigidity for their weight. Because it has excellent heat insulation and sound insulation properties, it is widely used as a structural member for aircraft, motorcycles, buildings, etc.

There are many types of honeycomb core materials, such as metal cores such as aluminum and stainless steel, plastic cores, FRP cores, and paper cores. Paper honeycomb cores are advantageous in terms of material cost and processing, but
For example, since it is made of paper, it is easily flammable, (2) it has low strength, and it has poor adhesion to the surface material. These problems also apply to resin-impregnated paper honeycomb bodies.

By a method of pouring or extrusion molding a cementitious mortar material or the like, it is impossible to manufacture a large concrete honeycomb panel that is thin, lightweight, and has high strength as in the present invention.

Therefore, the main object of the present invention is to provide a lightweight structural material that has high strength for practical use, preferably does not significantly reduce its strength even after firing (combustion), and has excellent adhesive properties between constituent materials. An object of the present invention is to provide a cementitious honeycomb panel having a glazed face plate.

[Means for Solving the Problems] According to the present invention, (a) a thin cementitious honeycomb constituent material 2 consisting essentially of 100 parts by weight of hydraulic cement and about 50 to 400 parts by weight of aggregate powder for cement, and (
b) Hydraulic cement 10 having a glazed layer 6 on the required surface
0 parts by weight and thermally stable cement aggregate about 50-40
It is composed of a cementitious surface plate 3 consisting essentially of 0 parts by weight, and the honeycomb constituent contacts of the honeycomb constituent material 2 and the contact points between the honeycomb constituent material 2 and the face plate 3 are bonded with a cement adhesive 5. An oiled honeycomb panel is provided, characterized in that the respective cement components in the honeycomb constituent material 2, the face plate 3 and the adhesive 5 are bonded continuously.

The above honeycomb panel is made of, for example, about 1 ounce of hydraulic cement.
00 parts by weight, aggregate powder for cement approximately 50-400ffif
A honeycomb constituent material is obtained by bending a thin flexible cement-based sheet such as cement-based paper, which consists essentially of fi part and about 5 parts by weight or more of pulp, and to which the material components are substantially uniformly dispersed and adhered. The honeycomb constituent materials are combined and the honeycomb constituent contacts are bonded with a cementitious adhesive, and an oiled cement consisting essentially of about 100 parts by weight of hydraulic cement and about 50 to 400 parts by weight of cement aggregate is added to the honeycomb constituent materials. It can be manufactured by a method of bonding a concrete surface plate with the cement adhesive. The glazed layer on the cementitious surface plate is formed by bonding the surface plate before oiling to a honeycomb body to form a honeycomb panel, then applying pongee to the required surface of the surface plate of the panel, and then firing. A glazed layer may also be formed. In this case, a nonflammable honeycomb panel containing no organic components such as pulp can be obtained.

By filling the cavities 4 of the honeycomb core material of the above glazed honeycomb panel with a heat insulating material, a panel structure with improved heat and sound insulation properties can be obtained. As the heat insulating material, mineral fibers such as rock wool and glass fiber, ceramic foams, foamed plastics, etc. are known, and nonflammable materials are generally preferred.

[Detailed Description of the Invention] The above-mentioned cement-based paper-made paper contains about 100 parts by weight of hydraulic cement, about 50 to about 400 parts by weight of aggregate powder for cement, and about 5 parts by weight or more of pulp (for example, about 10 to about 25 parts by weight). ) and an effective m electrostatic control fixing agent are mixed with water to form a slurry with improved electrostatic adhesion between cement and pulp, and the slurry is made into paper according to conventional methods.

The above-mentioned cement refers to a bonding powder material having hydraulic (or water/air hardness) properties, and typically includes Portland cement, alumina cement, fly ash cement, blast furnace cement, silica cement, etc. A mixture is exemplified.

Portland cement is usually advantageously used.

Cement/aggregate powder is used because of the increased strength of the cement component and its adhesion to pulp.

The aggregate powder is preferably one that is thermally stable when fired up to about 950°C, and includes, for example, chamotte flour, shelben flour, which is an artificial product, andesite powder, basalt powder, silica sand, which is a natural product, and It is preferable to use other Taisei type rock powder. The aggregate powder used usually has an average particle size of about 100 mesh or less. It is preferable to use the aggregate powder in an amount greater than the amount of cement.

The above-mentioned electrostatic control fixing agent means a fixing agent such as a sizing agent that has electrostatic control properties between that of pulp and cement. Typically, 74 female fixing agents such as anionic, cationic or zwitterionic organic polymer compounds or mixtures thereof, or ionizable compounds such as anionic compounds, cationic compounds, zwitterionic compounds Or a mixture of these mixtures and a substantially nonionic sizing agent is exemplified. For example, a mixture of an anionic sizing agent and a cationic sizing agent is used. The amount of the static 7ff1 nodular fixing agent used is usually 0.01 to about IO parts by weight, preferably about 0.1 to about 2 m!, per 100 parts of the total of pulp, cement, and aggregate. ! Department.

When using a mixture of a cationic fixer and an anionic fixer, the ratio (weight ratio) of the anionic fixer to 1 part of the cationic fixer is from about 0.05 to less than about 0.5. preferable.

In the above-mentioned cement paper, in addition to the above-mentioned compounding materials, various paper-making aids such as paper strength enhancers, dispersants, etc. can be blended as necessary. In addition, organic fibers or preferably fire-resistant inorganic fibers, as long as they do not interfere with papermaking,
It is also possible to incorporate metal fibers and the like for reinforcement.

The above-mentioned cement paper is obtained by mixing the above-mentioned raw materials with water or a cement supernatant liquid (hereinafter also referred to as water) to form an aqueous slurry, and then paper-making the slurry according to a conventional method. The mixing method and mixing order of each raw material and water etc. are not limited. For example, a predetermined amount of each raw material may be stirred and mixed in water or the like to form a slurry, and then water or the like may be further added to the slurry, stirred and mixed, and then a chemical such as a fixing agent may be added. The slurry concentration of the raw material composition is not particularly limited, and is within a range that can be made into paper using a conventional paper making method. The cement paper used in the manufacture of bright honeycomb panels is typically from a few hundred microns to a few millimeters thick. Note that cement paper of a desired thickness can be easily obtained by humidifying the paper-made cement paper or by joining two or more sheets together using cement paste or mortar and pressurizing them with a roll.

The honeycomb panel of the present invention is produced by bending a thin flexible cement-based sheet such as the above-mentioned cement paper into a shape with a honeycomb structure, and bonding the honeycomb-structure contacts with a cement adhesive. It is formed by bonding the face plates together with a cement-based adhesive. The honeycomb body usually has a cavity in the shape of a polygonal column, typically a triangular, square or hexagonal column.

Although the size of the cavity is arbitrary, it is, for example, a polygonal columnar body inscribed in a circle with a diameter of Cm, typically about 1 to 10c+++ visually. Cement paste, mortar, etc. are used as the cement adhesive. When the adhesive contains an appropriate amount of aggregate, such as mortar, the aggregate is an aggregate that is thermally stable when fired at temperatures up to about 950°C, similar to the aggregate contained in cement paper. Powder is preferred if the honeycomb panels are to be subsequently fired. If the honeycomb panel is subsequently fired to burn off the pulp content and rehydrate the cement component, it is generally preferred that the adhesive consist only of cement and aggregate. If the body is to be placed in a light ffi +iIt structure without being burned,
When a small amount of resin components such as rubber latex or acrylic emulsion are mixed into cement-based adhesives, the adhesive properties are improved.
Cement strength is increased and shear impact resistance is also increased. In this specification, these are collectively referred to as cement adhesives.

The hydraulic cement and thermally stable cement aggregate in the cementitious surface plate for cementitious bonding to the honeycomb body are the same as those used for the honeycomb constituent material. The thickness of the surface plate is approximately ■.

If it is 5 mm or more, it can be manufactured by, for example, extrusion molding. If the thickness is less than about 1.5 mm, an oiled flexible cementitious sort, such as the cement paper described above, can be used as the top plate. The glazed layer on the face plate can be formed by a pongee coating and firing process before joining the face plate to the honeycomb body, and then bonded to the core material of the unfired honeycomb body or the fired hydrated honeycomb body. Alternatively, after joining with a honeycomb body to form a honeycomb panel, the honeycomb panel may be formed by glazing and firing according to the above steps. Note that the surface plate can be provided on at least one surface of the honeycomb body, for example, on the front and back surfaces.

When firing a honeycomb panel containing organic matter such as pulp to make a non-flammable panel, the temperature above the temperature at which the organic matter such as pulp is burnt out is about 950°C or less, usually about 50°C to about 900°C. This is carried out at a temperature of about 10 minutes to several hours, typically about 30 to 120 minutes. If the firing temperature exceeds about 950°C, it will be difficult to recover the strength even after subsequent rehydration. After firing, the honeycomb panels are left in the air, for example by immersion in water, spray watering, etc., or preferably steam cured to rehydrate and restore strength by replenishing moisture lost during firing. is normal. By the above-mentioned firing, the organic matter-containing nutrient components in the honeycomb panel are burned out and become non-flammable, and through the above-mentioned rehydration treatment, rehydrated particles of cement are created in the voids formed by the burning of the organic matter. grow up.

The glazed honeycomb panel of the present invention obtained in this way
The thickness of the thin honeycomb constituent material 2 is usually about 0.5 m.
m to about 5 mm, typically less than about 2 mm. The dimensions of the cavity 4 can be arbitrary, but are, for example, in the shape of a polygonal column inscribed in a circle of several centimeters in diameter, typically about 1 to 10 centimeters visually. Cement material surface plate 3
The thickness is usually about 0.5 mm to about 2-3 cm.

Typical usage modes of the honeycomb panel according to the present invention are illustrated below. Due to its strength, it can be used as a honeycomb panel material, and ■
Waterproofness can be improved by painting the non-oiled parts of the honeycomb panel with paint such as water glass, and by filling the honeycomb space of the panel with a heat insulating material, a panel structure with heat and sound insulation properties can be created. easily obtained.

Examples] The present invention will be explained more specifically by the following examples.

Reference example (production of cement paper): As a cement raw material, a mixture of ordinary Portland cement and Nyamot fine powder (Rr NA X exterior tile pulverized product) [cement/chamotte (weight ratio) = I:21
100 parts by weight of the raw material, water and 2000 parts by weight of the cement supernatant liquid were put into a mixer, and mixed by stirring for 30 seconds to prepare a cement slurry.

On the other hand, the pulp is -Natural pulp for membrane paper making (NBKP/LB
KP=2/8) and water were put into a test beating machine (manufactured by Kumagai Riki Kogyo) and beaten for 55 minutes to obtain water content (c,
s, f) 370 ml of pulp slurry was obtained (pulp concentration 2.5%). The above cement slurry, pulp slurry, and water or cement supernatant were mixed to form a uniform cement-pulp slurry (pulp/cement raw material (weight ratio) = 13:87). To the cement-pulp slurry, 0.5 parts by weight (in terms of solid content) of Kaimen 557.1-f (manufactured by Dick Vercules, cationic wet paper strength enhancer) was added to 100 parts by weight of pulp + cement raw materials. Added and stirred for 1 minute.

Next, Acrivers (manufactured by Diafloc Co., Ltd., anionic adhesive was added to 0 parts by weight of the pulp + cement raw material).
．． 04 parts by weight (in terms of solid content) were added, and the same stirring as above was performed.

This slurry is made into a sheet using a square sheet machine (manufactured by Kumagai Riki), measuring 25 cm in length and 25 cm in width, and weighing 700 g.
/m' of cement raw material was obtained. This raw sheet was dehydrated and pressed in a wet state for 30 minutes at a pressure of 5 kgf/cm', and dried at 110'C-1 in a rotary dryer (manufactured by Riki Kumagai).
After drying for 5 minutes, a dry cement raw material was obtained.

Example 1: Many sheets of cement paper 2b, 2 obtained as described above
After bending d... as shown in Fig. 1, the cement papers 2a, 2c, etc. are overlapped and the honeycomb structure contacts are glued with mortar (cement: chamot) = 2:I)5 to form a triangular prism shape. A honeycomb body without a glazed layer was obtained, having cavities 4 of . Note that the dimensions of the cavity 4 are such that the triangular cross section is visually 5c.
The dimensions are inscribed in a circle of m.

A glaze slurry (100 parts by weight of frit, 5 parts by weight of frog's eye clay, 0.4 parts by weight of methyl cellulose, and 60 parts by weight of water) was applied to the cement paper 2a on the upper surface of the honeycomb body, and the mixture was heated at 800°C for 60 minutes. firing to form a glazed layer 6;
After steam curing for half a day, a nonflammable oiled honeycomb panel I containing no organic components and having an oiled cementitious surface plate 3 shown in FIG. 2 was obtained.

Example 2: In the same manner as in Example 1, a large number of sheets of cement paper were folded and stacked, the cement paper for the honeycomb structure contacts and the surface plate was adhered with mortar 5, a glaze was applied on the surface plate, and Calcined and rehydrated under the same conditions as above,
An oiled honeycomb panel 1 having cavities 4 in the shape of a quadrangular prism or hexagonal prism shown in FIGS. 3 and 4 was obtained.

In addition, in Examples 1 and 2 above, a mode in which a cement surface plate is bonded to a honeycomb body and then oiled and fired is illustrated, but a separately prepared oiled cement plate is used as an unfired honeycomb body or a fired hydrated honeycomb body. A similar oiled honeycomb panel can be obtained by cementing onto the body.

[Operations and Effects] The oiled honeycomb panel of the present invention is characterized by a structure consisting essentially of hydraulic cement and aggregate and in which the materials are substantially uniformly dispersed. Although conventional honeycomb paper is used as a core material and its surface is coated with an inorganic material such as magneacement, it is essentially different from the structure in which the coating material is separated by the core paper. They are different. That is, in the oiled honeycomb panel of the present invention, the cementitious honeycomb 1 has a structure in which cement and aggregate powder are continuously present in the constituent material, and these are joined by a cement adhesive at the honeycomb structure contact points.

Therefore, oiled honeycomb panels according to the present invention typically include:
0 Since it is essentially concrete, it is non-combustible and has high mechanical strength. Unlike conventional products, it does not deteriorate in strength or peel off due to moisture, etc. Furthermore, it uses thermally stable aggregate powder. In this case, ■ There is no flaking during heating due to fire, etc. ■ The honeycomb body is heated to burn off organic components such as pulp material, and is rehydrated to grow cement hydrate in the burnt-out voids. By employing a honeycomb core material, a high-strength glazed/'% nicum panel containing no combustible materials can be obtained.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of manufacturing a honeycomb panel having triangular prism-shaped cavities according to the present invention. 2 to 4 are cross-sectional views showing specific examples of the oiled honeycomb panel of the present invention. l. Oiled honeycomb panel, 2: Cementitious honeycomb constituent materials, 2a, 2b,..., cement paper, 3: Oiled cementitious surface plate, 4: Cavity, 5, Cement adhesive, 6: Glazed layer . Patent applicant Inax Co., Ltd. Figure 1

Claims (3)

[Claims] (1) (a) A thin cementitious honeycomb constituent material consisting essentially of 100 parts by weight of hydraulic cement and 50 to 400 parts by weight of aggregate powder for cement, and (b) A hydraulic material having a glazed layer on the required surface. consisting of a cementitious face plate consisting essentially of 100 parts by weight of cement and 50 to 400 parts by weight of a thermostable cementitious aggregate; The contacts are joined with cement adhesive,
and a glazed honeycomb panel characterized in that the honeycomb constituent material, the surface plate, and each cement component in the adhesive are bonded continuously. (2) The aggregate powder in the honeycomb constituent material is a thermally stable aggregate powder, and the honeycomb constituent material forms a fired and rehydrated honeycomb body core material that does not contain combustible components.
A honeycomb panel according to claim 1. (3) Claim 1, wherein the honeycomb space of the honeycomb panel is filled with a heat insulating material to improve heat and sound insulation properties.
Term or Term 2 honeycomb panel.