JP6452035B2 - Manufacturing method of tiled ALC panel structure - Google Patents

Description

  The present invention relates to a lightweight cellular concrete (hereinafter referred to as “ALC”) panel with a coating layer manufactured in a factory, a manufacturing method thereof, a tiled ALC panel structure, and a manufacturing method thereof.

  ALC panels are extremely light and excellent in heat insulation, incombustibility, fire resistance, etc., and are used as materials for building exterior walls, partition walls, roofs, floors, and the like. Tile panels with tiles on the surface of ALC panels are also widely used. However, since ALC panels are fragile base materials and easily absorb water, it is safe to apply tiles directly to the ALC panel surface. There was a problem. Therefore, a method is used in which an ALC panel is surface-treated with cement mortar or an aqueous reinforcing agent and then tiled with an adhesive or the like.

  When cement mortar is used for the surface treatment of the ALC panel, the cured product is hard, so the followability is poor, impact such as an earthquake cannot be absorbed, and cracking may occur. When a crack occurs in the cement mortar, there is a problem that the ALC panel as a base material also cracks and cannot maintain waterproof performance.

In Patent Document 1, a water-based reinforcing agent composed of one or more resins selected from vinyl acetate, ethylene vinyl acetate, acrylic, styrene acrylic, urethane, and epoxy is applied to the surface of the ALC panel in an on-site tiling method. Discloses a tile-attached structure of an ALC panel in which a tile is attached to the reinforcing agent layer with an elastic organic adhesive having a viscosity of 100 dPa · s or more. However, when a water-based reinforcing agent as described in Patent Document 1 is used, it takes time to dry, so that there is a problem that the construction efficiency is lowered. Further, since the water-based reinforcing agent has a weak adhesive force to the ALC panel, the waterproof performance of the ALC panel may be insufficient even when a primer is applied to improve the adhesive force.
In addition, the on-site tiling method has a problem that uneven coating such as omission of the reinforcing agent layer and a difference in the coating amount occurs, so that a certain skill is required for the installer.

JP 2002-339545 A

  It is an object of the present invention to provide a smooth ALC panel with a coating layer, a method for manufacturing the same, a tiled ALC panel structure, and a method for manufacturing the same, which are manufactured in a factory and have excellent waterproofness, water resistance and followability. And

  In order to solve the above problems, an ALC panel with a coating layer of the present invention is an ALC panel with a coating layer manufactured in a factory, and includes an ALC panel body and a modified silicone formed on the surface of the ALC panel body. A modified silicone-based coating agent that forms the modified silicone-based coating layer, the viscosity at 23 ° C. is 5 to 200 Pa · s, and the TI value is 1 or more and less than 6. And

  A manufacturing method of an ALC panel with a coating layer according to the present invention is a manufacturing method for manufacturing an ALC panel with a coating layer in a factory, the step of preparing an ALC panel body, and a modified silicone on the surface of the ALC panel body. Forming a coating layer and manufacturing an ALC panel with a coating layer, and the modified silicone coating agent forming the modified silicone coating layer has a viscosity at 23 ° C. of 5 to 200 Pa · s. The TI value is 1 or more and less than 6.

  It is preferable that the modified silicone-based coating layer is formed by applying a modified silicone-based coating agent on the surface of the ALC panel body with a roll coater.

  The manufacturing method of the tiled ALC panel structure of the present invention includes a step of preparing an ALC panel body, a step of forming a modified silicone-based coating layer on the surface of the ALC panel body, and manufacturing an ALC panel with a coating layer, A tile adhering step of adhering a tile to the surface of the coating layer of the ALC panel with a coating layer with an adhesive, and a method for producing the tiled ALC panel structure, wherein the modified silicone-based coating layer is formed The silicone-based coating agent has a viscosity at 23 ° C. of 5 to 200 Pa · s and a TI value of 1 or more and less than 6, and the process for producing the ALC panel with a coating layer is performed in a factory.

  The tile adhesion step can be performed at the construction site after being transported to the construction site.

  The tiled ALC panel structure of the present invention is manufactured by the method for manufacturing a tiled ALC panel structure of the present invention.

According to the ALC panel with a coating layer of the present invention, the coating layer has excellent followability to the ALC panel and can improve the adhesion to the adhesive. Moreover, the ALC panel with a coating layer of the present invention can obtain a coating layer with a smooth surface, and can improve the working efficiency at the time of tiled construction.
Since the tiled ALC panel structure of the present invention has high adhesive strength between the tile and the ALC panel and is excellent in waterproofness, water resistance and followability, it has a remarkable effect that durability and safety can be enhanced. Play.
Further, according to the present invention, since the ALC panel with a coating layer is manufactured in the factory, a high-quality material can be stably provided.
Furthermore, since the present invention uses a modified silicone coating agent that is moisture-cured, the drying time and curing time can be shortened, and the process schedule can be shortened.

It is a schematic explanatory drawing which shows an example of the process of the manufacturing method of the ALC panel with a coating layer of this invention. It is a schematic explanatory drawing which shows an example of the process of the manufacturing method of the tiled ALC panel structure of this invention.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the accompanying drawings. However, the illustrated examples are illustrative only, and various modifications can be made without departing from the technical idea of the present invention. .

FIG. 1 is a schematic explanatory view showing an example of a process of a method for producing an ALC panel with a coating layer according to the present invention.
In FIG. 1, reference numeral 30 denotes an ALC panel with a coating layer according to the present invention, which includes an ALC panel body 10 and a modified silicone coating layer 16 formed on the surface of the ALC panel body 10.

  As shown in FIG. 1, the ALC panel 30 with a coating layer according to the present invention is manufactured at a factory 40, and a step of preparing the ALC panel body 10 and a modified silicone on the surface of the ALC panel body 10 in the factory. The system coating layer 16 is formed, and the coating layer-attached ALC panel 30 is manufactured.

  The modified silicone coating agent 14 for forming the modified silicone coating layer 16 is a coating agent mainly composed of modified silicone, has a viscosity at 23 ° C. of 5 to 200 Pa · s, and has a TI value of 1 or more and 6 What is less than is used.

  As the modified silicone, a polymer having a hydrolyzable group bonded to a silicon atom and having a silicon group that can be crosslinked by forming a siloxane bond (hereinafter also referred to as “crosslinkable silicon group”) is used. The chain skeleton is preferably at least one compound selected from the group consisting of a polyoxyalkylene polymer and a (meth) acrylic polymer, and a polyoxyalkylene polymer is more preferable.

  The modified silicone-based coating agent requires a curing catalyst, a filler, a plasticizer, an adhesion promoter, a thixotropic agent, a dehydrating agent, an antioxidant, a UV absorber, a diluent, a pigment, a lubricant, and the like. Can be added accordingly.

The modified silicone coating agent 14 has a viscosity at 23 ° C. of 5 to 200 Pa · s, more preferably 5 to 150 Pa · s, and most preferably 5 to 50 Pa · s. The viscosity of the modified silicone-based coating agent 14 at 23 ° C. can be measured using a B-type viscometer in accordance with JIS K6833-1 at a temperature of 23 ° C. and a rotation speed of 10 r / min.
Further, the modified silicone coating agent 14 has a thixotropy index (TI value) of 1 or more and less than 6, and more preferably 3 or more and less than 4. The Ti value is measured using a B-type viscometer in accordance with JIS K6833-1, and in measurement under a temperature condition of 23 ° C., the viscosity A at a low rotation speed (rotation speed 1 r / min) and a high rotation speed (rotation) It is a value represented by the ratio (A / B) of the viscosity B at the time of several tens of r / min.
When the viscosity or TI value is increased, the leveling property (self-smoothing) may be lowered. By setting the viscosity and TI value in the above ranges, a coating agent having excellent performance can be provided. A coating agent having excellent leveling properties can be provided.

  The method for forming the modified silicone coating layer 16 on the surface of the ALC panel body 10 is not particularly limited as long as it is a method manufactured in a factory, but as shown in FIG. It is preferable to form the modified silicone coating layer 16 by applying the modified silicone coating agent 14 to the surface of the panel body 10 with a roll coater 12 or the like. In FIG. 1A, 12a is a coating roll whose surface is covered with rubber, and 12b is a pickup roll.

  The application thickness of the modified silicone coating layer 16 is preferably about 0.5 to 2 mm, more preferably about 1 mm.

  Since the ALC panel with a coating layer of the present invention is excellent in leveling properties, a coating layer having a smooth surface can be obtained after the coating agent is cured. Moreover, even if unevenness occurs due to sagging during application of the coating agent, a smooth coating layer can be obtained after curing. Since the coating layer of the ALC panel becomes smooth, the work efficiency at the time of tile construction can be improved.

FIG. 2 is a schematic explanatory view showing an example of a process of the method for manufacturing a tiled ALC panel structure of the present invention.
In FIG. 2, reference numeral 32 denotes a tiled ALC panel structure according to the present invention, which has a coating layer including the ALC panel body 10 and the modified silicone coating layer 16 formed on the surface of the ALC panel body 10. The ALC panel 30 includes an adhesive layer 20 formed on the coating layer 16 of the ALC panel 30 with a coating layer, and a tile 22 formed on the adhesive layer 20.

  The tiled ALC panel structure 32 of the present invention is manufactured by a manufacturing method in which the process of manufacturing the ALC panel with a coating layer is performed in the factory, and is performed in the factory by the same method as the ALC panel with a coating layer of the present invention. After manufacturing the ALC panel 30 with a coating layer, a tile adhering step of adhering the tile 22 with an adhesive to the surface of the coating layer 16 of the ALC panel 30 with a coating layer can be manufactured. In addition, although the example which apply | coats an adhesive agent using the comb eyelet 18 was shown in FIG. 2, there is no restriction | limiting in particular in the application method of an adhesive agent, A well-known method can be used.

  There is no restriction | limiting in particular as the tile 22, It can select from a well-known tile suitably, and can be used.

  As the adhesive, known adhesives can be widely used, and are not particularly limited as long as they exhibit good adhesion to the modified silicone coating layer 16. For example, “Tile Ace” (cemedine ( A modified silicone-based elastic adhesive such as a trade name, manufactured by K.K.

  The bonding step may be performed at either the factory or the site. As shown in FIG. 2, after the ALC panel with a coating layer manufactured at the plant is transported to the construction site 50, the bonding step is performed at the construction site. It is preferable.

  The present invention will be described more specifically with reference to the following examples. However, it is needless to say that these examples are shown by way of illustration and should not be construed in a limited manner.

Example 1
After mixing the polymer, heavy calcium carbonate, and surface-treated calcium carbonate in the mixing ratio shown in Table 1, the mixture was heated to 120 ° C. and stirred under a reduced pressure of 8 kPa or less, then cooled to 60 ° C. and 8 kPa or less. Stir under vacuum conditions. Thereafter, a diluent was added and stirred, and then a curing agent was added and stirred to prepare a modified silicone coating agent.

In Table 1, the compounding quantity of each compounding substance is shown by g, and the details of the compounding substance are as follows.
* 1: Silyl EST280, manufactured by Kaneka Corporation.
* 2: NN500, manufactured by Nitto Flour Chemical Co., Ltd.
* 3: Calfine N350, manufactured by Maruo Calcium.
* 4: Cactus normal paraffin, N-11, manufactured by JX Nippon Oil & Energy Corporation.
* 5: Neostan U700ES, manufactured by Nitto Kasei Corporation.

The following test was done with respect to the obtained modified silicone coating agent. The results are shown in Table 1.
1) Viscosity measurement Using a B-type viscometer, the viscosity was measured at a rotational speed of 10 r / min under a temperature condition of 23 ° C. in accordance with JIS K6833-1.

2) Measurement of TI value Using a B-type viscometer, in accordance with JIS K6833-1, the viscosity is measured at a rotational speed of 1 r / min and 10 r / min under a temperature condition of 23 ° C. and measured at a rotational speed of 1 r / min. The viscosity ratio (A / B) between the measured viscosity A and the viscosity B measured at a rotation speed of 10 r / min was calculated as a TI value.

3) Leveling test A modified silicone-based coating agent was applied to an ALC panel (dimensions 70 mm × 70 mm, thickness 37 mm) having a thickness of 1 mm and a width of 10 mm on both left and right ends to a thickness of 1 mm. After curing at 50 ° C. and 50% RH for 24 hours, the smoothness of the coating layer was visually confirmed. The evaluation criteria are as follows.
Evaluation Criteria ◎ There is no roughness and is sufficiently smooth, ○ Smooth but somewhat rough, ×: not smooth.

(Examples 2-9)
As shown in Table 1, a modified silicone coating agent was prepared in the same manner as in Example 1 except that the compounding material was changed, and each measurement was performed. The results are shown in Table 1.

(Comparative Examples 1 and 2)
As shown in Table 1, a modified silicone coating agent was prepared in the same manner as in Example 1 except that the compounding material was changed, and each measurement was performed. The results are shown in Table 1.

  10: ALC panel main body, 12: roll coater, 12a: coating roll, 12b: pickup roll, 14: modified silicone coating agent, 16: modified silicone coating layer, 18: adhesive, 20: adhesive layer, 22: Tile, 30: ALC panel with coating layer, 32: ALC panel structure with tile, 40: Factory, 50: Construction site.

Claims (1)

Preparing an ALC panel body;
Forming a modified silicone-based coating layer on the surface of the ALC panel body to produce an ALC panel with a coating layer;
A tile adhering step of adhering a tile to the surface of the coating layer of the ALC panel with a coating layer with an adhesive;
A method for manufacturing a tiled ALC panel structure comprising:
The modified silicone coating agent forming the modified silicone coating layer has a viscosity at 23 ° C. of 5 to 200 Pa · s, and a TI value of 1 or more and less than 6.
There line steps of producing the ALC panel with the coating layer at the factory,
The tile bonding step, after the transport to the construction site, earthenware pots row at the construction site, manufacturing process.

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