JPH0452305A - Colored block for road and manufacture thereof - Google Patents

Abstract

PURPOSE:To display excellent fuctions as road-signs by forming a core part layer, in which waste, such as slag, sludge, and soot and dust, etc., is joined with thermoplastic resin, and a filler layer on the core part layer, and coating the surface of the filler layer with a colored layer. CONSTITUTION:The waste of about 70-95wt.% of slag, sludge, and soot and dust, etc., is joined with thermoplastic resin to form a fore part layer 3. A filler layer 2, formed by joining the waste of about 70-95wt.% of slag, sludge, and soot and dust, etc., with about 5-30wt.% of thermoplastic resin, is formed on the core part layer 3. Then the filler layer 2 is coated with a surface layer 1 which unsaturated polyester resin containing color pigment is hardened. In this case, glass beads 1a are scattered in the unsaturated polyester resin in the surface layer 1, an aluminum foil 1b is applied on the back side successively. Also glass beads, having-grain diameters of about 80-840mu and refractive indexes of 1.5-1.6, 1.7-1.9, 1.9-1.95, and 2.2-2.3, is used for the glass beads 1a.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to road blocks such as curb blocks and pedestrian/vehicle boundary blocks, and their manufacturing method, and more particularly to the disposal of slag, sludge, soot, etc. To provide a road block using a material and having a colored layer with excellent brightness formed on its surface.

[Prior Art] Conventionally, when blocks used for roads such as curb blocks and pedestrian road boundary blocks (hereinafter referred to as 70 blocks for roads) are colored yellow to indicate prohibition of overtaking, prohibition of parking, etc., After the concrete blocks are laid, the surface is generally painted.

However, this simply applied paint is susceptible to fading when exposed to strong direct sunlight containing ultraviolet rays, and is subject to severe deterioration when exposed to wind and rain and temperature changes. Furthermore, it has the disadvantage that it has a lot of contact with cars and people, and it is easily scraped off by the friction and baldness falls off. Therefore, not only is it unsatisfactory in its function as a warning sign, but it is also extremely unsightly in terms of aesthetics.

On the other hand, waste such as slag, sludge, soot and dust are treated as unnecessary materials.
Processing methods include composting and disposing of it in a landfill, or putting it in an incinerator and burning it, but landfilling requires a vast amount of land, which is difficult to secure, and incinerators have enormous operating costs. However, there are many problems such as the carbon dioxide gas emitted causes environmental pollution. The use of this waste is limited to, for example, mixing it into concrete to create concrete blocks.

[Problems to be Solved by the Invention] As a result of repeated research on the use of these wastes, the present inventor focused on the application to the above-mentioned road coloring blocks, and found that by bonding the waste with a thermosetting resin, coloring can be achieved. The present invention was completed by confirming that a product with excellent adhesiveness, adhesiveness, and weather resistance could be obtained.

[Means for Solving the Problems] As shown in FIG. 1, the road block of the present invention has a core layer 3 made of thermoplastic waste plastic formed on the innermost side, and the components thereof include slag, slag, 70-95w of sludge and soot
t%, thermoplastic as binder 6-3
0 wt% is used. Then, as resin components, polyethylene resin, polystyrene resin, vinyl chloride resin, etc., which have a large amount of waste, were selected. Among these, vinyl chloride resin tends to generate harmful gases such as salt purple gas, so the manufacturing method will be described later.

Next, a filling layer 2 is provided in the middle, and its components are 70 to 70%.
It is formed by bonding 95 wt% of waste powder such as slag, sludge, soot and dust with 5 to 30 wt% of a thermosetting resin. Polyester resin, phenol resin, epoxy resin, etc. can be used as this thermosetting resin, and the resin plays the role of adhesive for waste powder and particles, and after solidifying, it forms a network structure. Demonstrate physical strength. That is, the waste does not act as a filler for the resin, but forms the main body, accounting for 70 to 95 wt%,
The resin mixed at a concentration of 5 to 30 wt% acts as an adhesive and binds and solidifies the powder and granules, making it possible to form a large amount of waste into a solid block.

In addition, wastes such as blast furnace slag, electric furnace slag, foundry sand, etc., sludge, and cinders discharged in the casting process can be used as this waste, and the components include, for example, blast furnace slabs, etc. , electric furnace slab, and sludge are analyzed as shown in the table below.

The sludge component on the surface of the slag component is mainly composed of silica (
Si), calcium (Ca), aluminum (AI),
Composed of iron (Fe). The components of this slag, sludge, etc.
Contains metal components, sand components, etc. When made into a block, it maintains a constant weight and hardness, making it suitable for road blocks.

Further, on the outside thereof, a surface layer 1 is formed using an unsaturated polyester resin, for example, isophthalic acid polyester, and containing a coloring pigment to display a marker color such as yellow. This resin with excellent light transmittance can clearly reveal the color of the pigment mixed in, and can produce a color effect that calls attention to things such as prohibition of overtaking. good.

In addition, it can be either glossy or matte to improve the aesthetic environment of the road, and has a certain hardness and weather resistance, so it will not wear out when it comes into contact with cars, and is resistant to UV rays, acid rain, etc. Forms a strong layer that can withstand

In addition, when it is desired to make the surface reflective of light, a colored pigment is contained in the unsaturated polyester resin, glass pieces la having retroreflectivity are scattered, and aluminum foil 1b is applied to the back side. A surface layer 1 is formed. The glass beads] a have a particle size of 80 to 840μ and a refractive index of 1.
．． 5-1.6.1.7-1.9.1.9-1.95.2
．． 2 to 22 to 2.3 is suitable. This coloring method is
It may also be an embodiment in which colored glass beads 1a having retroreflectivity are scattered. Further, the aluminum foil 1b is applied to the back surface of the beads 1a in order to increase the retroreflectivity of the beads 1a by reflecting light leaking from between the beads and making it incident on the beads 1a.

Next, to explain the manufacturing method, a mold is created with the external shape of a prismatic, semicircular, or L-shaped road block such as a curb block or a pedestrian/vehicle boundary block, and a mold release agent is applied to the inner wall of the mold. If polishing is required, polish with a dry cloth (see Figure 2C).

Then, a colored resin is used, in which an unsaturated polyester resin such as an isophthalic acid polyester is used as a main resin, and a yellow pigment and dye for coloring are mixed therein.

Then, the reaction accelerator and curing agent are mixed with the resin and sprayed onto the inner wall of the mold using a spray gun.At this time, it is preferable to spray using a pressure gun instead of an air gun as it will evenly coat the corners. It is.

At this time, if the surface is to have a light reflecting function, retroreflective glass beads la are added to the isophthalic acid polyester in an amount of about 50 wt%. Furthermore,
The curing reaction of the unsaturated polyester resin is not completed yet, and while the adhesiveness is maintained, a layer of 1.0 to 1.6 m is deposited on the inside of the layer.
Spread the aluminum foil ib cut into m-square strips so as to cover the back side of the glass beads la (see Figure 2C).

Next, wastes such as blast furnace slabs, electric furnace slabs, aluminum ash and foundry sand, sludge, cinders, and soot dust discharged from the casting process are prepared, and these are used alone or in a mixture.
Dry thoroughly in a drying oven, etc.

Then, using a thermosetting plastic such as unsaturated polyester resin or phenol resin as a binder, for example, unsaturated polyester is used as the main ingredient, the waste is mixed with this using a mixer, etc. Add curing agent and reaction accelerator and pour into mold. At this time, in order to prevent peeling, the molding is performed before the isophthalic acid polyester resin is completely cured (see FIG. 2C).

Furthermore, we moved on to forming the core part N3 using thermoplastic waste plastic, and in order to avoid the generation of toxic scum from hinyl chloride.
First, using only a resin such as polystyrene or polyethylene resin that does not cause gas generation, the polystyrene resin and slag are put into a kneader and subjected to primary cross-mixing while being pressurized. Then, in Hatsutomo's kneading without any lubricant, in addition to heating heat, frictional heat is generated between the two, causing a strong temperature rise of 1, and this heat causes polystyrene resin etc. to tlj@ and become slag under pressure. It combines with powder, softens into a lump, and becomes like a rice cake.

As a result, the generation of strong frictional heat in the cake-like mass is suppressed, and the overall temperature decreases over time. During this time, since polystyrene resin does not have chlorine groups, there is no risk of toxic gas generation. Also, at this time, since most of the mineral slag is mixed, it is difficult to knead it as it is, so pressure is applied to bind each other and promote bonding. When the two are gradually kneaded while adding the slag again, frictional heat is generated in the same way as above, but at this time the polystyrene resin is melted, so it acts as a lubricant. , even when subjected to strong friction, the sliding action prevents chafing and works to minimize heat generation. As a result, it is possible to perform kneading in a thermally stable region below the thermal decomposition temperature, thereby preventing the generation of toxic gases such as chlorine gas and chloride water, and the occurrence of deterioration.

Then, the kneaded body of the thermoplastic resin is made into a similar shape to a road block by an extruder or the like, and the mixture is inserted into the formwork to form a second block.
While fluidizing the thermoplastic resin kneaded body, fill the entire mold into a mold (see Figure 2 E), leave it for a certain period of time, cool it down, open the mold, remove it, and apply road coloring. Get a block.

[Function] The highly glittering colored unsaturated polyester layer allows the surface to be beautifully colored, making it an excellent road sign. If retroreflective beads are applied, it can be used as a light for automobiles, etc. It can be reflected to alert drivers even at night.

In addition, due to the good adhesion with the thermosetting resin, a sturdy block can be formed, and since the unsaturated polyester layer is resistant to ultraviolet rays and temperature changes, it can have excellent weather resistance.

Then, 5 to 95 wt% of the waste powder and granules are
The 3wt% thermosetting resin acts as an adhesive to bind each other together, forming a solid block and increasing the efficiency of waste utilization.

Furthermore, if a thermoplastic resin is used as the core layer, waste plastics can be used, increasing the efficiency of waste utilization.In particular, the use of vinyl chloride is useful as a treatment method for the same resin, which is difficult to burn. ] With the above-described structure and operation, the present invention can form a colored layer rich in glitter, exhibiting excellent functions as road curb stones and boundary blocks, and also has good adhesion with thermosetting resin. It is robust and resistant to sunlight and wind and rain, so it can maintain its effectiveness for a long time.

In addition, waste such as slag and aluminum ash can be made into blocks using a relatively small amount of resin, and waste thermoplastic resin can also be used, making it possible to use waste in the most efficient manner, resulting in an economical solution that is extremely inexpensive. It also has a positive effect.

[Example 1] A formwork was created with an L-shaped pedestrian and roadway boundary block,
This was coated with a mold release agent and polished. Isophthalic acid polyester (trade name Mitsui Toatsu Nister R) mixed with a yellow pigment was mixed with a curing agent and a reaction accelerator, stirred, and bitten with a pressure spray gun. After drying 600g of sludge powder and granular material, 400g of unsaturated polyester resin (trade name: Mitsui Toatsu Nister The mixture of waste and resin was poured into the formwork. Furthermore, 480g of slag and 480g of burnt shells were combined with 240g of styrene resin.
were mixed for primary kneading, followed by 480g of slag,
480 g of burnt husks and 240 g of vinyl chloride resin were mixed, secondary kneaded, and cast into an L-shape using an extruder. The curing reaction was allowed to proceed while being vibrated, and after 2 hours, curing was completed, and the mold was removed from the mold to obtain a product.

[Example 2] A mold was created with the outer shape of an L-shaped road block as a pedestrian/vehicle boundary block, a mold release agent was applied to the inner wall of the mold, and the mold was polished with a dry cloth. Then, retroreflective glass beads were added to unsaturated polyester plum fat such as isophthalic acid polyester (trade name: Mitsui Toatsu Nister R) mixed with a yellow pigment.
A mixture containing wt% was applied. Furthermore, while the curing reaction of the unsaturated polyester resin was not yet completed and the adhesiveness was still maintained, aluminum foil cut into strips of about 1.0 to 1.5 mm square with a glitter was placed inside the layer. I sprinkled it on the back side of the beads.

Next, after drying 600 g of slag powder and 600 kg of sludge powder, 400 g of unsaturated polyester resin (trade name: Mitsui Toatsu Nystar The mixture of waste and resin was poured into the mold while the acidic polyester was still uncured. Furthermore, 480 g of slag and 480 g of burnt shells were mixed with styrene resin 2
40g of slag was mixed for primary kneading, and then 480g of slag was mixed.
g and 480 g of burnt husks were mixed with 240 g of vinyl chloride resin, secondary kneaded, and cast into an L-shape from an extruder. While vibrating, let the curing reaction proceed, 2
After a period of time, the surface conversion was completed and the mold was demolded to obtain a product.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 (A) is a longitudinal sectional side view of the road block of the present invention, FIG. 2 (B) is a partially enlarged sectional view, and FIG. 2 is a schematic diagram showing the manufacturing process. , (A) is a step of applying a mold release agent, (B) a step of applying a surface layer containing beads,
(C) shows the filling layer casting process, (D) shows the core layer casting process, and (E) shows the curing process. 1... Surface layer 1a... Beads 1b... Aluminum foil 2... Filling layer 3 ・ Core layer

Claims (1)

[Scope of Claims] 1) 70 to 95 wt% of waste such as slag, sludge, soot dust, etc.
A core layer bonded with ~30wt% thermoplastic resin was formed inside, and 70~95wt% of waste such as slag, sludge, soot dust, etc. was bonded with 5~30wt% thermosetting resin in the middle. A colored block for roads that forms a filling layer and is coated with a surface layer made of hardened unsaturated polyester resin containing colored pigments on the outside. 2) 70 to 95 wt% of waste such as slag, sludge, soot and dust
A core layer bonded with ~30wt% thermoplastic resin is formed inside, a filling layer made of waste such as slag, sludge, and soot dust bonded with thermosetting resin is formed in the middle, and aluminum foil is placed on the back side. A colored block for roads, which is coated with a surface layer by hardening unsaturated polyester containing a colored pigment interspersed with glass beads having a coating and reflective function. 3) Apply a release agent to the inner wall of the road block mold, mix unsaturated polyester resin containing a coloring pigment with a hardener, and dispose of slag, sludge, soot, etc. Approximately 70 to 95 wt% of powder and thermosetting resin to 5 to 95 wt%
A mixture of 30wt% is poured into a mold, and the powder and granules of waste such as slag, sludge, and soot dust and thermoplastic resin are mixed at a ratio of about 70% to 100% by weight.
A method for producing a colored block for roads, which comprises casting a mixture at a ratio of 95 wt% to 5 to 30 wt%, and removing the mold after solidification to obtain a product. 4) Apply a mold release agent to the inner wall of the formwork in which the road block has been molded, and mix an unsaturated polyester resin containing a color pigment and interspersed with glass pieces with photoregression properties with a hardening agent. and sprinkle aluminum foil inside it,
Next, a mixture of granules of waste such as slag, sludge, soot and dust and a thermosetting resin at a ratio of approximately 70 to 95 wt% to 5 to 30 wt% is poured into a mold, Approximately 70 to 95 wt% of waste powder and thermoplastic resin to 5 to 95 wt%
A method for manufacturing a road colored block, which comprises casting a mixture at a ratio of 30 wt%, and removing the mold after solidification to obtain a product.