KR100615557B1 - A complex urethane footway-block and it's manufacturing method - Google Patents

Abstract

The present invention does not press molding the cement block layer and the elastic layer separately, but simultaneously press molding and curing in a single mold to simplify the work process and at the same time can shorten the work time to give a great help to mass production of products In addition, the conventionally manufactured cement block can solve the problems caused by different sizes and molds for forming the elastic layer, and thus a separate finishing process is added, thereby reducing the time required for work and unnecessary manpower waste. The present invention relates to a composite urethane elastic pitcher in.

Cement block, urethane, rubber chip, press molding, upper mold, lower mold

Description

A composite urethane foot pitch block and it's manufacturing method

1 is a view showing the manufacturing process of the present invention in order

FIG. 2 is a perspective view showing a composite in. Foot block manufactured by the process of FIG. 1

<Detailed description of the major symbols in the drawings>

10: cement block layer 20: polyol

30 diisocyanate 40 mixed layer

50: adhesive layer 60: elastic layer

100: lower mold 200: upper mold

The present invention relates to a composite urethane elastic pitcher in. Footpath and a manufacturing method thereof, and more particularly to the convenience of pedestrians and the clean environment of the city center on the foot of the road or apartment, general residential area, walkway, amusement park, etc. The present invention relates to a composite urethane elastic pitcher in. Foot block and a manufacturing method thereof.

In general, in-pedestrian blocks of various shapes and colors are installed on pedestrian streets or on the floors of apartments, general residential areas, promenades, and amusement parks for the convenience of pedestrians and the clean environment of the city.

In the past, such in-walking blocks were manufactured by a single material such as cement blocks (introking blocks) or waste rubber chips at the time of manufacture, and thus had problems inherent in the single material element.

First, in the case of cement blocks, the manufacturing cost is low, durability and surface strength are high, and there is little risk of breakage even in the passage of a heavy body such as a vehicle, and there is an advantage that there is relatively little deformation even in the sudden change of the external environment.

However, since the cement block itself has no elasticity and thus has no shock absorbing capacity, the cement block does not help the pedestrian's health such as fatigue easily on the joint of the pedestrian. As it is transmitted, it leads to a large injury, as well as the color is easily discolored or discolored over time, there is a problem that it is difficult to implement a variety of colors and designs to improve the urban environment.

Recycled synthetic resin blocks, which are other types of in- and out-of-the-way blocks, have good absorbing power against external impact, unlike cement blocks, which reduce fatigue in the joints of pedestrians and provide higher stability even when falling or falling. Not only can it help the pedestrian's health, such as good touch, but it also has the advantage of using waste rubber chips as raw materials to meet the recycling business of waste resources and to have environmentally friendly elements. In addition, it is brittle because of its strong brittleness and ease of installation due to light weight, and it is possible to implement various colors that do not change during molding manufacturing, thus contributing to the improvement of urban environment.

However, in spite of these advantages, the synthetic resin block is more expensive to produce than the cement block, and also has a weak durability and strength, which makes it impossible to pass heavy materials such as vehicles, and the weather resistance is weak, so that the external temperature changes due to seasonal changes. There was a problem that occurs such as deformation and torsion during the time. In addition, there is a problem such as not only water permeability to water, but also because it does not have its own drainage function, polluting the surface of the earth as well as the soil beneath the ground.

Therefore, in order to solve the problem produced by forming a single material, such as cement block or synthetic resin block as described above, in recent years to form a cement block in the lower layer, using an adhesive on the upper surface of the rubber chip to bond and press molding And a cured double-layered composite layer in.block.

As an example of the above composite in.walking block, Korean Patent Application No. 2003-15278 discloses a predetermined amount of adhesive on a high-strength cement block prepared inside a mold of a predetermined depth having a selected shape. And the mixed synthetic resin chips (less than 19 mesh recycled rubber chips or EPDM color chips) and liquid curing agent (epoxy urethane-containing high-strength curing agent) of 92 to 93% by weight: 7 to 8% by weight, respectively. After putting the synthetic resin chip mixture, and lowered the upper mold located on the upper side has provided a method for producing a double-layered composite in-broadcast block of pressure-curing molding so that the lower support layer and the upper elastic layer can be integrally molded.

The composite layer manufactured by this method, the foot block, can be produced at a relatively low price while complementing the disadvantages of the cement block and the recycled synthetic resin block and combining the advantages as much as possible. Production is possible.

However, since the manufacturing process of the composite layer in.walk block is first manufactured by cement block, and then press-molded recycled synthetic resin chip on the upper surface to form an elastic layer, two molding processes and curing processes are necessary. This leads to the complexity and long time of work process, which is a problem of the limitation of mass production.

In addition, when a cement block separately manufactured in a predetermined mold is formed to form an elastic layer, the cement block is often not seated without an empty space inside the mold, and the size of the cement block is often different from each other. If it is larger than this mold, the cement block must be resized according to the size of the mold. On the contrary, if the cement block is made smaller than the mold, the side of the manufactured in-press block is more protruded than the cement block. This adds a separate finishing process that requires refinishing before installation on the road, resulting in time-consuming work and unnecessary waste of manpower.

In addition, the composite layer in. Foot block manufactured by the above method is an elastic layer made of recycled synthetic resin chips by shrinking or detaching the adhesive layer between the cement block layer and the elastic layer due to rapid temperature change or external impact after installation on the road. There was also a problem that this peeling phenomenon occurs.

Therefore, the present invention is configured to solve the above-described problems, the cement block and the elastic layer is formed at the same time by a single press molding to simplify the work process and significantly reduce the working time, mass production is easy. In addition, to improve the bonding force between the cement block layer and the elastic layer to provide a composite urethane elastic in-broadcast block and a manufacturing method that can reduce the phenomenon that the elastic layer peels off due to rapid temperature change or external impact after installation on the road. It aims to do it.

The present invention to achieve the above object,

In the method for producing a composite in. Foot block comprising a cement block layer and an elastic layer adhered to the top by an adhesive,

Filling a composition of cement concrete including cement, aggregate, water reducing agent, and water in a mold having a predetermined depth to a certain height to form a cement block layer;

 Forming a two-component hydrocurable urethane adhesive layer by sequentially injecting a siloxane-based polyol and a siloxane-based diisocyanate over a predetermined time period on an upper surface of the cement block layer;

Check that the adhesive layer is evenly penetrated into the surface of the cement block layer to form a mixed layer, and the upper surface of the recycled synthetic resin chip (waste rubber chip or EPDM color chip) and urethane-based liquid adhesive 90 to 93% by weight: 7 to 10% by weight of the mixed mixture to form a step of forming an elastic layer;

Pressing and hardening the upper mold located above the lower mold so that the lower cement block layer and the upper elastic layer can be integrally formed;

It is achieved by providing a method for producing a composite urethane elastic in. Foot block comprising the; step of taking out of the mold and aged in the aging room for 24 hours to naturally cure.

Hereinafter, the manufacturing method of the present invention will be described in detail with reference to the embodiments shown in the accompanying drawings, but the present invention is not limited to the embodiments shown in the drawings.

1 is a view showing the manufacturing process of the present invention in order, look at the manufacturing process of the present invention sequentially through FIG.

First, the cement block layer 10 is formed by charging a composition of water-permeable cement concrete including cement, aggregate, water reducing material, and water to a lower mold 100 having a predetermined depth to a predetermined height.

The cement block layer 10 formed as described above may be replaced by not only cement concrete but also conventional polymer concrete, ascone composition, and the like, but the cement block layer 10 may be changed within a range having a predetermined permeability. It is possible.

In the present invention, by using a water-permeable concrete composition using steelmaking slag introduced in the Republic of Korea Patent Registration No. 0414901 to form the above cement block layer brings a more preferable effect.

The water-permeable concrete composition described above uses 1500 to 1700 kg of aggregate having a maximum dimension of 15 mm or aggregate having a maximum dimension of 10 mm per 1 m 2 of concrete, the amount of water is 90 to 100 kg, and the ratio of water to cement (W / C) is 25 to 35% by weight, 0.5 to 2.0% by weight of high-performance AE water reducing agent with respect to cement, wherein the aggregate is steelmaking slug that is aged by spraying water or immersing in water for at least one month. It is characterized by containing 10 to 20% by volume, the steelmaking slag as a waste is stabilized by proper treatment so that it does not expand even when contacted with water, so that it can be used as part of the aggregate, thereby recycling waste and reducing costs. In addition, the cured concrete has high permeability and compressive strength.

After forming the cement block layer 10 as described above, it may be added to press the process for a predetermined time, which is to adjust the top surface of the cement block layer 10 horizontally and at the same time to minimize the voids therein. It is implemented.

When the cement block layer 10 is formed on the lower mold 100 as described above, when the siloxane-based polyol 20 and the siloxane-based diisocyanate 30 are sequentially injected over a predetermined time, they are blended with each other. A two-component hydrocurable urethane adhesive layer 50 is formed, at which time the urethane adhesive layer 50 is formed and an adhesive penetrates into the surface of the cement block layer 10 to form the mixed layer 40. do.

Since the cement block layer 10 is not yet cured, the siloxane-based polyol 20 and the siloxane-based diisocyanate 30 are emulsified with moisture in the cement concrete composition. It is easy to penetrate the inside.

As such, the mixed layer 40 penetrated into the surface of the cement block layer 10 improves the bonding force between the cement block layer 10 and the adhesive layer 50, and the conventional cement block and the elastic layer are peeled off. To be significantly reduced.

In the process of forming the cement block layer 10, the mixed layer 40, and the adhesive layer 50 as described above, it is more preferable if the above operations are performed while applying vibration using an ultrasonic wave or a vibration vibrator. Isocyanates can be mixed uniformly and the mixed adhesive can more easily penetrate the cement block layer.

As such, it was confirmed that the adhesive layer 50 and the mixed layer 40 were formed, and 90 to 93% by weight of the recycled synthetic resin chip having a size of 3 to 5 mm and the urethane-based liquid adhesive were respectively formed on the upper surface of the adhesive layer 50. ~ 10% by weight of the mixed synthetic resin chip mixture is added to form an elastic layer (60).

As the synthetic resin chip, waste polyurethane rubber chips or EPDM color chips may be used, and a separate pigment may be additionally added to the synthetic resin chip mixture to implement a desired color in the produced block product. In addition, 3 to 5% by weight of DMF (N, N-Dimethylformamide) may be added to the synthetic resin chip mixture as a penetrant, and the penetrant dissolves the surface of the synthetic resin chip and is compatible with the urethane adhesive. To increase.

In the present invention, as the recycled synthetic resin chip, a product manufactured through a method of reclaiming synthetic resin based on waste polyurethane introduced in Korea Patent Application No. 1993-6212 has a more desirable effect.

The above regeneration method includes a first step of mixing and dissolving 5 kg of toluene, 200 g of dye, and 100 g of silicon with respect to 100 kg of the collected pulverized polyurethane product collected and dried; To the melt obtained in the first step, 5 kg of copolymer propylene ethylene, 2 kg of stearic acid, 1 kg of triol dichloropropyl phosphate, 500 g of flame litadent, and 100 kg of a ground product and 2 kg of barium, which are the initial products of the first step, were added. A second step of mixing evenly; After the mixture obtained in the second step is heated for about 5 minutes at a temperature of 170 ~ 200 ℃, extruded by an extruder and cooled to cut into a suitable size consists of a third step to obtain a chip, through the regeneration method By recycling the waste polyurethane that was incinerated as waste, it is possible to reduce resources and environmental pollution.

As such, when the cement block layer 10, the mixed layer 40, the adhesive layer 50, and the elastic layer are formed on the lower mold 100, the upper mold 200 located above the lower mold 100 is lowered to each layer. They are press-molded and cured so that they can be integrally molded, and the two-component hydrocurable urethane adhesive constituting the adhesive layer 50 is naturally cured by moisture contained in the cement block layer 10.

The press molding is preferably carried out for about 1 minute at a pressure of 130 ~ 200㎏ / ㎠ at room temperature, by removing the press-molded molded product from the mold and aged in a aging room for 24 hours to naturally cure the present invention. The product is complete.

Therefore, the manufacturing method of the composite in. Foot block composed of the above-mentioned steps does not press molding the cement block and the elastic layer separately, but simultaneously press molding and curing in one mold to simplify the work process and at the same time work. It can shorten the time and can greatly help the mass production of the product, and the conventionally manufactured cement block can solve the problems caused by different sizes and molds for forming the elastic layer, and thus separate The addition of a finishing process prevents the need for time-consuming work and waste of manpower.

FIG. 2 is a perspective view of a composite in. Foot block manufactured by the process of FIG. 1. FIG.

As shown in FIG. 2, the composite in. Foot block manufactured through the manufacturing method of the present invention has a cement block layer 10 made of water-permeable concrete and an adhesive penetrated and mixed on top of the cement block layer 10. Mixed layer 40, an adhesive layer 50 formed on the upper surface of the mixed layer 40, and an elastic layer 60 made of recycled synthetic resin formed on the upper surface of the adhesive layer 50.

Since the composite in.walking block having the above-described configuration is a product manufactured by pouring and curing at the same time in one mold, the cement block layer and the elastic layer are integrated in the same size, so that the respective marking blocks are displaced when installed on the road. It can be prevented, and the adhesive layer penetrates the inside of the cement block layer surface to improve the bonding strength between the constituent layers to reduce the phenomenon of the elastic layer is peeled off due to rapid temperature and humidity changes or external impact.

Hereinafter, the present invention will be described in more detail with reference to Examples, but the following Examples are merely illustrative of the present invention, and the present invention is not limited by the following Examples.

<Example 1>

First, a water-permeable concrete composition composed of 1700 kg of aggregate containing 20 vol% of steelmaking slug aged in a lower mold having a predetermined height, 300 kg of cement, 100 kg of water, and 3 kg of high-performance AE water reducing agent to a height of 6 cm of the mold Injecting the siloxane-based polyol and diisocyanate at a ratio of 2: 1 on the upper surface thereof in turn, forming a two-component hydrocurable urethane adhesive, and then rotating the inside of the mold using a vibrating vibrator. When the polyol and the diisocyanate are branded with each other to penetrate into the surface of the concrete composition, the synthetic resin chip mixture wherein the recycled resin chip having a size of 3 to 5 mm and the urethane-based liquid adhesive are mixed in a weight ratio of 90: 10, respectively. After input to have a height of 2cm, the upper mold located at the top is lowered to a pressure of 150㎏ / ㎠ The press-molding was performed for one minute at.

Thus, the press-molded molded product was removed from the mold and aged in a aging room for 24 hours to prepare a composite in. Foot block manufactured by natural curing as Example 1, and the cement-based coating of KSF 4716 with respect to Example 1 prepared as described above. The adhesive strength was measured by the test method of the adhesive strength according to the ashes and is shown in Table 1 below.

<Example 2>

In-broadcast block prepared in the same manner as in Example 1, wherein the water-permeable concrete composition was prepared using 1500 kg of aggregate, 350 kg of cement, 90 kg of water, 2 kg of high performance AE water reducing agent. To Example 2, and measured for the adhesive strength in the same manner as in Example 1 for Example 2 prepared as described above are shown in Table 1 below.

<Example 3>

In-broadcast block prepared in the same manner as in Example 1, wherein the water-permeable concrete composition was prepared using a 1600 kg aggregate, 250 kg of cement, 95 kg of water, 2.5 kg of a high performance AE water reducing agent. To Example 3, the adhesive strength was measured in the same manner as in Example 1 with respect to Example 3 prepared as shown in Table 1 below.

Comparative Example 1

In the state where the cement block produced using the water-permeable concrete composition having the same composition as in Example 1 was first seated on a lower mold having a predetermined depth, a two-component urethane adhesive was applied to the upper surface thereof, and again 19 mesh or less on the upper surface thereof. The synthetic rubber chip mixture containing 92: 8% of each rubber chip and epoxy urethane curing agent was added by weight ratio, and the upper mold lowered at the top was lowered to a pressure of 120㎏ / ㎠ Thermal pressing was performed for 5 minutes while maintaining the temperature in the mold at 180 ° C.

Thus, the press-molded molded article was removed from the mold and aged in a aging room for 24 hours to prepare a composite in. Foot block prepared as Comparative Example 1, the same as in Example 1 with respect to Comparative Example 1 prepared as described above It is shown in Table 1 by measuring the adhesive strength by the method.

Example 1 Example 2 Example 3 Comparative Example 1 Adhesive strength ( ㎏ / ㎠) 13.2 15.4 14.7 6.3

As can be seen through Table 1, Examples 1 to 3 manufactured by the method proposed in the present invention, although there is a slight difference in the adhesive strength, as compared to Comparative Example 1 prepared by applying the prior art as a general It can be seen that the adhesive strength is much higher, and this indicates that the mixed layer formed inside the cement block layer surface acts as a factor for improving the bonding force between the cement block and the adhesive layer.

As described above, the method for manufacturing the composite urethane elastic in. Foot block according to the present invention does not press molding the cement block layer and the elastic layer separately, but simultaneously press molding and curing in one mold, thereby simplifying the work process. It can shorten the time and can greatly help the mass production of the product, and the conventionally manufactured cement block can solve the problems caused by different sizes and molds for forming the elastic layer, and thus separate The addition of a finishing process prevents the need for time-consuming work and waste of manpower.

In addition, the present invention is manufactured by the above-described manufacturing method of the in-bodo block is cast and cured at the same time in one mold, because the cement block layer and the elastic layer is integrated in the same size, when installed on the road It is possible to prevent each phosphorus block from shifting and to improve the bonding force between the constituent layers by the mixed layer in which the adhesive penetrates inside the cement block layer surface, so that the elastic layer is peeled off due to rapid temperature and humidity change or external impact. The phenomenon can be reduced.

Claims (5)

In the method for producing a composite in. Foot block comprising a cement block layer and an elastic layer adhered to the top by an adhesive, Filling a composition of cement concrete including cement, aggregate, water reducing agent, and water in a mold having a predetermined depth to a certain height to form a cement block layer;  Forming a two-component hydrocurable urethane adhesive layer by sequentially injecting a siloxane-based polyol and a siloxane-based diisocyanate over a predetermined time period on an upper surface of the cement block layer; Check that the adhesive layer is evenly penetrated into the surface of the cement block layer to form a mixed layer, and the upper surface of the recycled synthetic resin chip (waste rubber chip or EPDM color chip) and urethane-based liquid adhesive 90 to 93% by weight: 7 to 10% by weight of the mixed mixture to form a step of forming an elastic layer; Pressing and hardening the upper mold located above the lower mold so that the lower cement block layer and the upper elastic layer can be integrally formed; Removing the mold from the mold and aging for 24 hours in a aging room to naturally harden. The method of claim 1, wherein the cement concrete composition is 1500 to 1700 kg aggregates having a maximum dimension of 15 mm or aggregates having a maximum dimension of 10 mm per 1 m 2 of concrete, the amount of water is 90 to 100 kg, the ratio of water to cement (W / C) is 25 to 35% by weight, 0.5 to 2.0% by weight of the high-performance AE water reducing agent with respect to cement, the aggregate is aged by spraying or immersing in water for at least 1 month relative to the total aggregate amount A method for producing a composite urethane elastic phosphor block containing 10-20% by volume steelmaking slug. The method according to claim 1 or 2, wherein the recycled synthetic resin chip is a first step of mixing and dissolving 5 kg of toluene, 200 g of dye, 100 g of silicon with respect to 100 kg of the ground pulverized product pulverized and dried waste polyurethane products; To the melt obtained in the first step, 5 kg of copolymer propylene ethylene, 2 kg of stearic acid, 1 kg of triol dichloropropyl phosphate, 500 g of flame litadent, and 100 kg of a ground product and 2 kg of barium, which are the initial products of the first step, were added. A second step of mixing evenly; Composite urethane prepared by the third step; to obtain a chip by heating the mixture obtained in the second step at 170 ~ 200 ℃ temperature for about 5 minutes and then extruded by an extruder and then cut to a suitable size; Method for producing elastic insulated blocks. The method of claim 3, wherein the pressing is performed at room temperature under a pressure of 130 to 200 kg / cm 2 for about 1 minute. Cement block layer 10 made of water-permeable concrete and a mixed layer 40 in which an adhesive penetrates and mixed on top of the cement block layer 10, an adhesive layer 50 formed on an upper surface of the mixed layer 40, and the adhesive The composite urethane elastic insulated block, characterized in that the elastic layer 60 made of recycled synthetic resin formed on the upper surface of the layer 50 is integrally molded.

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