JP2008106202A - Coating material for outer wall - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a technical means for reusing both of waste roof tiles and waste coating materials having been processed by a waste disposer as industrial wastes, with respect to a coating material for outer walls, and to greatly reduce the amount of the waste. <P>SOLUTION: Fine powder (≤3 mm particle size) of waste roof tiles and an elastic acrylic emulsion waste coating material are mixed and used as the coating material for outer walls. The most preferable mixing ratio is 1:1 in weight ratio, however, it is possible to mix 20-50 wt.% fine powder of waste roof tiles with 50-80 wt.% acrylic emulsion coating material. The resultant coating material has low heat conductivity and thus is effective in heat insulation. Since edges of the fine powder of waste roof tiles are coated with the elastic acrylic emulsion waste coating material, skins and articles are not injured, when abraded with the coated surfaces even though the surfaces are rough. In addition, the color inherent in the roof tiles is in harmony with that of the elastic acrylic emulsion waste coating material to impart beautiful appearance to the coated wall surfaces. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a paint for an outer wall made from recycled waste tile and acrylic emulsion waste paint.

  When roof tiles are replaced or houses are demolished, a large amount of waste tiles appear. Conventionally, this waste tile has been landfilled at the final treatment plant as rubble. In recent years, many proposals have been made to crush waste tiles and use them as aggregates for road paving materials from the viewpoint of reducing waste and reusing resources.

  The applicant of the present invention has proposed that waste tiles are crushed to a diameter of 10 to 15 mm with a crusher and laid in a garden or planting. By laying chip-shaped waste tiles on the ground surface, there is an effect that the garden can be given aesthetics and weeds can be prevented from growing.

  When the waste tile is crushed into chips, fine powder of the waste tile is generated. Such fine powder waste tiles (diameter 0.1 to 3 mm) have not been used in the past, but the following Patent Document 1 discloses an outer wall made of a mixture of such fine powder waste tiles and cement. Coatings have been proposed.

On the other hand, waste paint is generated when toning the paint. In other words, when adding pigments or mixing paints with different colors in order to change the paint color to a predetermined color, the paint ratio of the pigment or paint is changed to obtain a paint of a predetermined color. The one with an inappropriate ratio becomes waste paint. This waste paint has the original composition and characteristics of the paint, but is discarded because the color does not match. This kind of waste paint is also generated for the elastic or highly elastic acrylic emulsion paint widely used as a paint for outer walls (in this specification and claims, it is called “elastic acrylic emulsion paint”). In the past, it was discarded as industrial waste.
JP 2002-308656 A

  It is an object of the present invention to significantly reduce the amount of waste by providing technical means for reusing both waste tiles and waste paint that have been provided to processors as industrial waste until now. Yes.

  This invention mixes fine powder of waste tile (particle size of 3 mm or less), which has been discarded as industrial waste, with different colors of elastic acrylic emulsion waste paint, which was also industrial waste until now. By reusing it as a paint, the above-mentioned problems have been solved. The mixing ratio of the waste tile fine powder and the acrylic emulsion waste paint is most preferably 1: 1 by weight, but the waste tile fine powder is 20 to 50% by weight and the acrylic emulsion waste paint is 50 to 80% by weight. It is possible to use a mixing ratio. For example, a unit product is obtained by adding 200 cc of water to 15 kg of waste tile fine powder and 15 kg of elastic acrylic emulsion waste paint.

  When the mixing ratio of the fine powder of waste tile is large, the color tone when painted is dark and becomes a color close to gray. On the other hand, when the mixing ratio of fine powder of waste tile is 40 to 50% by weight, it becomes a bright brick color like unglazed pottery and is excellent in the appearance of the painted outer wall.

  When the fine powder of waste tile is made into a fine powder with a particle size of 1 mm or less, the painted surface is smooth and gentle appearance, and when it is made into a fine powder of 3 mm or less, a unique aesthetic that the painted surface is rough is obtained. It is done.

  Application methods of the obtained paint are roller painting, brush painting, spray painting with an air spray gun, etc., and applications are exterior coating such as painting of outer walls of houses, buildings, factories, etc., painting of block fences, etc. is there.

  According to the present invention, it is possible to effectively recycle the tiles discharged in large quantities at the site of refurbishing the roof and the site of demolishing the house, particularly the fine powder of the waste tiles that are generated when crushed for use as a paving material, Reuse of elastic acrylic emulsion waste paint is also effective. Since the roof tiles are fired at around 1200 ° C., they remain solid even when powdered, and even when mixed with an acrylic emulsion paint, no stickiness is generated and no clay is released. The painting work is also easy.

  Further, since the roof tile is porous, the paint obtained by the present invention has a low thermal conductivity and a heat insulating effect. In addition, because the corners of the waste tile fine powder generated at the time of crushing are covered with elastic acrylic emulsion waste paint, even if the painted surface is rough, it gives a soft touch and does not damage rubbed skin or objects . Furthermore, the color unique to the roof tiles is fused with the color of the elastic acrylic emulsion waste paint, and there is an effect that a beautiful appearance can be given to the applied wall surface.

  15 kg of fine powder generated when crushing waste tiles was added to 15 kg of elastic acrylic emulsion waste paint generated due to color samples or toning errors during toning, and 200 cc of water was added and mixed uniformly.

  The particle size of the used waste tile fine powder was in the range of 0.1 to 3 mm, and the average particle size was about 1 mm. This tile powder was put into 15 kg of elastic acrylic emulsion waste paint, and 200 cc of water was added and mixed uniformly to fade and paint the cracked block wall. 200 cc of water is added to improve the workability of the painting work. Other than this water, no other mixture such as pigment is added. The painted block wall has been revived into a very beautiful block wall with unglazed unevenness.

  Not only acrylic emulsion paint but also tile powder entered the cracked part, forming a beautiful appearance with almost no mortar base treatment. Since the mixed tile particles were within 3 mm from the fine powder, a natural coated surface was obtained by using as a base material.

The used elastic acrylic emulsion waste paint is a waste paint with the following composition and properties generated in the process of preparing the exterior sample paint, and various colors are mixed in the sample preparation process. Has the same performance as the product.
1. Composition: Acrylic resin 10-20
Filler / Aggregate 40-50
Inner silica 1-5
Titanium oxide 1-5
Water 20-25
2. Physical and chemical properties Properties Pasty colors Various (many light gray)
Odor Acrylic odor present Boiling point 100 ° C
Melting point 0 ° C
Density 1.5 (at 20 ° C)

  When a general and conventional paint is applied by an amateur, the brush marks are conspicuous and sufficient skill is required to paint a large area. On the other hand, the paint of the present invention can be applied thickly by the interaction between the tile powder and the elastic acrylic emulsion paint even when the roller brush is used, and the brush mark has a natural pattern. Inconspicuous. In addition to roller coating, ordinary brush coating and spray coating with an air gun are also possible.

Claims (2)

  A paint for outer walls comprising a mixture of a fine powder of waste tile having a particle size of 3 mm or less and an elastic acrylic emulsion waste paint.   A paint for outer walls comprising a mixture of 20-50% by weight of fine particles of waste tile having a particle size of 3 mm or less and 50-80% by weight of elastic acrylic emulsion waste paint.