KR20190072043A - Bollard using battom ash of municipal waste - Google Patents

Abstract

The present invention relates to a rubber composite material bollard using bottom ash of domestic waste, which is environmentally friendly and has low costs by being manufactured using the bottom ash generated when the domestic waste is incinerated. The rubber composite material bollard has new composition with excellent safety. The rubber composite material bollard includes: a bollard main body (10) having a barrel shape vertically open; an upper cap (20) connected to an upper end of the bollard main body (10); and a fixing unit (30) fixing the bollard main body (10) onto the ground. The bollard main body (10) comprises: a core (12) having a cylindrical shape and formed as an EPDM compound including the bottom ash of the domestic waste; an elastic outer cover (14) formed as the EPDM compound and having relatively higher elasticity than that of the core (12) by being covered on the outer circumference of the core (12); and a slip layer (16) coated on the outer circumference of the elastic outer cover (14) and having relatively higher slip performance and relatively higher softness than those of the elastic outer cover (14).

Description

{Bollard using battom ash of municipal waste}

The present invention relates to a rubber composite bollard utilizing a household waste bottom ash, and more particularly, to a rubber composite bollard which is manufactured using bottom ash generated when incineration of household garbage is used, The present invention relates to a rubber composite bollard utilizing a bottom ash of a household waste.

Bollard is a means of ensuring the safety of pedestrians without obstructing the passage of pedestrians by controlling the entrance of the vehicle by being installed at the boundary of the roadway or in the boundary of the roadway or at the entrance of the park or playground.

Such a bollard is often made of marble, concrete, steel or the like. If the bollard is made of a rigid material having such a high rigidity, there is a high possibility that a pedestrian may be seriously injured when an accident occurs in which the bollard collides with the bollard. In addition, even if a vehicle collides with the bollard, the bollard must be replaced because the vehicle is greatly damaged and the bollard is greatly damaged as well as the vehicle.

On the other hand, as the economy grows along with the development of industries, the amount of daily garbage is increasing day by day. Household garbage is garbage generated at home or industrial sites, and refers to garbage except industrial waste. Generally, household waste is incinerated by local governments, and bottom ash generated after incineration is landfilled.

However, in order to fill the bottom ash generated after the incineration of household garbage, it is necessary to secure a large area of landfill, so that it is difficult to secure the landfill and also environmental pollution problem due to landfill of bottom ash is caused.

Korean Patent Publication No. 10-2014-0078214 (May 25, 2014) Korean Registered Utility Model No. 20-0437211 (2007. 11. 06)

It is an object of the present invention to provide a bollard using living waste bottom ash and to reduce burden of landfill and environmental pollution due to landfill bottom ash, The present invention provides a rubber composite bollard utilizing low-cost, low-cost, and pedestrian injuries and vehicle damage in the event of a collision of pedestrians and vehicles.

According to an aspect of the present invention, there is provided a bollard according to the present invention, comprising: a bollard body (10) having a vertically opened tubular shape;

An upper cap 20 coupled to an upper end of the bollard body 10; And fixing means (30) for fixing the bollard body (10) to the ground, wherein the bollard body (10) is formed of an EPDM compound including a household garbage bottom ash, and a cylindrical core (12) ; An elastic envelope (14) formed of an EPDM compound and coated on the outer circumferential surface of the core (12) and having a relatively higher elasticity than the core (12); And a slip layer (16) coated on the outer circumferential surface of the elastic cover (14) and having slip and softness characteristics relatively higher than those of the elastic cover (14). A material bollard is provided.

According to another aspect of the present invention, the EPDM compound to be formed in the core material 12 includes 100 parts by weight of EPDM and 60 to 100 parts by weight of household waste bottom ash, and the average size of the bottom ash of the household garbage is 10 to 20 탆 .

According to another aspect of the present invention, the slip layer 16 comprises 10-20 parts by weight of fluoroacrylate, 20-30 parts by weight of urethane acrylate, 15-25 parts by weight of 2-hydroxyethyl acrylate (2-HEA) 10 to 20 parts by weight of triethylene glycol dimethacrylate (TEGDMA), 5 to 10 parts by weight of pentaerythritol triacrylate (PETA), 5 to 10 parts by weight of silica nanoparticles, 1 to 10 parts by weight of a photopolymerization initiator, 5 to 30 parts by weight of a slip-resistant coating agent.

According to another aspect of the present invention, the fixing means 30 includes a connection pipe 32 having a lower end embedded in the ground and an upper end inserted into the core 12; A flange 34 protruding outward from the outer peripheral surface of the upper end of the connecting pipe 32 and having an insertion groove 33 into which the lower end of the bollard body 10 is inserted; And an elastic piece 36 protruding inward from an outer side wall of the insertion groove 33. A lower cap 18 made of a hard material is provided at a lower end of the bollard body 10, 18 are positioned below the elastic piece 36 when the bollard body 10 is inserted into the insertion groove 33 and the elastic piece 36 is located between the slip layer 16 and the elastic sheath 14 ).

The present invention as described above has the following features.

First, since the present invention utilizes waste garbage bottom ash to be discarded, it has an environmental-friendly advantage.

Second, the present invention improves the recycling rate of the bottom ash of the household garbage, thereby solving the problem of filling the bottom ash of the household garbage, that is, securing the landfill and solving the soil contamination.

Third, since the core 12 and the elastic shell 14 constituting the bollard body 10 are both made of EPDM compound and are made of the same series of materials, the attachment of the core 12 and the elastic shell 14 The durability of the bollard body 10 is improved, and the bollard body 10 to be discarded can be easily recycled.

Fourthly, the present invention is advantageous in that the core member 12 is formed of an EPDM compound so that the core member 12 has a stiffness capable of maintaining its shape and has an appropriate level of elasticity. Further, since the elastic member 14 has a higher elasticity than the core member 12, Absorption rate is excellent. Accordingly, it is possible to reduce the degree of injury when a pedestrian strikes the bollard, and also to reduce the breakage of the vehicle when the vehicle is hit, and to prevent breakage of the bollard itself.

Fifth, since the slip layer 16 is formed on the surface of the bollard body 10 in the present invention, it is possible to further reduce the degree of injury when the bollard hits the bollard, and furthermore, There is an advantage that it can be reduced.

Furthermore, if the slip layer 16 has a soft characteristic, the shock absorbing property of the elastic covering 14 is not reduced by the slip layer 16. When the slip layer 16 is made of a material having antifouling property and water repellent property in addition to slip property , It is prevented that the bollard body 10 is contaminated with dust, so that a more pleasant distance environment can be created, and the clothes or hands of the pedestrian can be prevented from becoming dirty by the bollard.

Sixth, the present invention is characterized in that the elastic piece 36 is provided in the fixing means 30 for fixing the bollard body 10, and the lower cap 18 made of a hard material is provided at the lower end of the bollard body 10, The body 10 can be easily inserted and removed from the fixing means 30 so that the bollard can be easily replaced and the bollard body 10 is effectively resiliently biased by the resilient piece 26,

1 is a perspective view of a preferred embodiment of the present invention.
2 is a sectional view showing the installation process of the embodiment
3 is a cross-sectional view

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings.

1 is a perspective view showing a preferred embodiment of the present invention, and Figs. 2 and 3 are sectional views.

As shown in the drawings, the present invention includes a cylindrical bollard body 10 having a hollow therein, an upper cap 20 coupled to the upper end of the bollard body 10, Wherein the bollard body 10 includes a core 12 having a cylindrical shape, an elastic shell 14 covering the outer circumferential surface of the core 12, And a slip layer 16 formed on the surface of the substrate.

The core material 12 has a cylindrical shape, which includes EPDM, household waste bottom ash and other additives. The EPDM material has an appropriate level of elasticity and rigidity to maintain the shape by the household garbage bottom ash. Preferably, the core 12 is molded into an EPDM compound comprising EPDM, household waste bottom ash and other additives.

EPDM (Ethylene Propylene Diene Monomer) is a synthetic rubber widely used for various applications because of its excellent weatherability, thermal stability and insulation. However, since EPDM has a weak mechanical strength due to the vulcanization reaction, fillers such as carbon black, silica, and talc are generally added to compensate for such disadvantages.

The bottom ash is a flooring material generated after the incineration of household garbage, and the bottom ash of the household garbage generally contains a metal oxide such as silicon dioxide (SiO ₂ ) and alumina (Al ₃ O ₃ ). Particularly, , A large amount of silicon dioxide, which greatly affects physical properties such as tensile strength, modulus, hardness and abrasion resistance, is contained.

Generally, the bottom ash contains an organic substance having a combustible component that is not combusted with an inorganic substance such as metal, glass, etc., and harmful substances may be discharged by the combustible component of the organic substance. Therefore, the bottom ash recovered at a household waste incinerator is preferably further fired one or two times so that the combustible components of the organic substances are completely burned. In addition, harmful heavy metals such as mercury, cadmium, and chromium are immobilized through such additional combustion, thereby eliminating harmful effects due to heavy metals.

Table 1 shows the analysis of the components of second-order combustion of bottom ash obtained after incineration of household waste collected from Jeonju City.

SiO ₂
Na ₂ O
MgO
K ₂ O

25.4%

2.54%
1.17%

0.56%
CaO
Fe ₂ O ₃

Al ₂ O ₃
P ₂ O ₃
36.2%

7.04%
6.94%
12.6%

These garbage bottom ash functions as a filler in EPDM compound. That is, the bottom ash for household garbage is used as a filler in place of carbon black, silica, and talc, which are commonly used as fillers for EPDM compounds. The household garbage bottom ash is pulverized to have an average particle size of about 10 to 20 μm. When the average particle size of the bottom ash of the household garbage is less than 10 탆, the dispersibility of the bottom ash of the household garbage is excessively lowered. Therefore, there is a problem in that an additional dispersing agent must be added in the production of the EPDM compound and the average particle size of the bottom ash of the household garbage is 20 Mu m, the contact area between the bottom ash of the household waste and the EPDM becomes small, so that the bottom ash of the household garbage does not sufficiently function as a filler.

      Preferably, the EPDM compound for molding the core material 12 comprises 100 parts by weight of EPDM and 60 to 100 parts by weight of a household waste bottom ash, and other additives such as antioxidants, lubricants, viscosity control agents, Lt; RTI ID = 0.0 > a < / RTI > If necessary, conventional fillers such as talc and carbon black may be further added.

When the content of the bottom ash of the household garbage is less than 60 parts by weight, the rigidity of the core material 12 can not be exhibited. When the amount exceeds 100 parts by weight, the crosslinking density of the EPDM compound decreases, .

On the other hand, the elastic covering 14 imparts elasticity to the surface of the bollard so as to absorb an external impact. The elastic envelope 20 has a relatively good elasticity as compared with the core material 12. Preferably, the EPDM compound is coated on the outer circumferential surface of the core material 12 or extruded on the surface of the core material 12 by a double extrusion method .

The EPDM compound forming the resilient jacket 20 may include a household trash bottom ash as a filler and may include conventional fillers such as carbon black, silica, talc, and the like. The elastic envelope 14 must have a relatively greater resiliency than the core 12 so that the EPDM compound that forms the elastic envelope 14 so that the elastic envelope 14 has the required level of elasticity, And the like are appropriately controlled.

As the elastic covering 14 is formed on the surface of the core 12 as described above, even when the pedestrian strikes the bollard, the impact is alleviated to reduce the degree of injury of the pedestrian, and the degree of damage to the vehicle and the bollard can be reduced . Of course, as described above, although the core 12 has a degree of rigidity and an appropriate level of elasticity for maintaining the shape, the impact absorbency of the bollard becomes relatively higher as the elastic shell 14 is formed, .

Since the elastic envelope 14 and the core 12 are made of a rubber composite material of the same type as the elastic envelope 14 is formed of an EPDM compound, the adhesive strength between the elastic envelope 14 and the core 12 is excellent Therefore, the bollard has the advantage of excellent durability. Further, since the elastic jacket 14 and the core 12 are made of rubber composite material of the same series, the bollard to be discarded can be easily recycled.

On the other hand, a slip layer 16 is formed on the surface of the elastic covering 14. The slip layer 16 imparts slipperiness to the surface of the elastic covering 14 to slip on the surface of the bollard when a pedestrian or a vehicle hits the bollard, thereby further reducing the injuries of the pedestrian and the breakage of the vehicle and the bollard.

Since it is difficult to lose the elasticity of the elastic envelope 14 by the slip layer 16, the slip layer 16 needs to have a soft characteristic. Therefore, the slip layer 16 may be formed of a material having a soft characteristic and a relatively low friction coefficient relative to the elastic skin 14 and having excellent slippery property. Preferably, however, the slip layer 16 has wear resistance, And is formed of a material having antifouling property and water repellency.

If the slip layer 16 has wear resistance, the slip layer 16 is prevented from being damaged by an external impact. If the slip layer 16 has antifouling properties and water repellency, the bollard is prevented from being dirty with dust and wet with rainwater. When pedestrians sit on the bollard or relax or walk, the clothes may touch the bollard or touch the bollard by hand. In this case, if the slip layer 16 has antifouling and water repellency, the pedestrian may sit on the bollard, There is less fear that clothes will become dirty. Particularly, in the case of rain, the dust in the air is included in the rainwater, and the rainwater containing the dust is buried in the bollard, so that the bollard becomes dirty after the rain. If the slip layer 16 has water repellency, can see.

In the present embodiment, the slip layer 16 is formed of fluorine acrylate, urethane acrylate, 2-HEA, 2-hydroxyethyl acrylate, triethylene glycol dimethacrylate, Is formed by coating a slip-resistant coating agent comprising TEGDMA, triethyleneglycol dimetha acrylate, PETA, silica nanoparticles, photopolymerization initiator, and a solvent.

The fluorine acrylate improves the slipperiness and the antifouling property of the slip layer 16 as well as the water repellency and the urethane acrylate improves the adhesion and abrasion resistance of the slip layer 16. 2-hydroxyethyl acrylate (2-HEA) improves the flexibility, antifouling property and chemical resistance of the slip layer 16, and triethyleneglycol dimethacrylate (TEGDMA) and pentaerythritol triacrylate (PETA) The abrasion resistance and antifouling property of the slip layer 16 are improved. The nanoparticle silica forms fine irregularities in the slip layer 16 to improve the slip property of the slip layer 16 and improve water repellency. As the photopolymerization initiator, phenylglyoxylic acid methyl ester (MBF), benzophenone, and the like which are conventionally used in the production of an ultraviolet curable coating liquid are used.

Considering the overall physical properties such as adhesion, softness, slipperiness, abrasion resistance, antifouling property and water repellency of the slip layer 16, the slip-resistant coating fluid for forming the slip layer 16 is composed of 10 to 20 parts by weight of fluoroacrylate, 15 to 25 parts by weight of 2-hydroxyethyl acrylate (2-HEA), 10 to 20 parts by weight of triethylene glycol dimethacrylate (TEGDMA), 5 to 20 parts by weight of pentaerythritol triacrylate (PETA) 5 To 10 parts by weight, the silica nanoparticles 5 to 10 parts by weight, the photopolymerization initiator 1 to 10 parts by weight, and the solvent 5 to 30 parts by weight.

The upper cap 20 covers the upper portion of the bollard body 10 and is formed of various materials. The slip layer 16 is also formed on the surface of the upper cap 20. In some cases, the upper cap 20 may be formed to have the same multi-layer structure as the bollard body 10. It is also possible to add various functions to the bollard by attaching the IOT technology to the upper cap 20 have.

On the other hand, the bollard body 10 is fixed to the ground by means of a fixing means 30. The fixing means 30 has a connection pipe 32 whose lower end is embedded in the ground and whose upper end is inserted into the core 12 and a connection pipe 32 protruding outward from the outer circumferential surface of the upper end of the connection pipe 32, A flange 34 formed with an insertion groove 33 into which the lower end is inserted and an elastic pin 36 protruding inward from an outer side wall of the insertion groove 33. The elastic fins 36 are formed by cutting a part of the outer wall of the insertion groove 33, and a plurality of the elastic fins 36 are formed to be spaced apart from each other by a predetermined distance.

Therefore, when the fixing means 30 is mounted on the ground and the bollard body 10 is inserted into the insertion groove 33, the elastic pin 36 is engaged with the slip layer 16 of the bollard body 10 and the elastic shell 14, A lower cap 18 made of a hard material is provided at a lower end of the bollard body 10 as shown in FIG. And the lower cap 18 are for easily fitting the bollard body 10 into the insertion groove 33.

That is, when the bollard body 10 is inserted into the insertion groove 33, the elastic piece 36 is pressed outwardly by the lower end of the bollard body 10 so that the bollard body 10 is inserted into the insertion groove 33 Since the elastic piece 36 is pressed outwardly and can not be opened properly due to the elasticity of the slip layer 16 and the elastic shell 14, the bollard body 10 is inserted into the insertion groove 33 It becomes difficult to insert.

2, when the lower cap 18 of the hard material is provided at the lower end of the bollard body 10, when the bollard body 10 is inserted into the insertion groove 33, The elastic piece 36 is effectively pressed outwardly by the lower cap 18 so that it is easy to insert the bollard body 10 into the insertion groove 33. [ The height of the lower cap 18 and the height of the elastic piece 18 are set such that the elastic piece 18 is positioned above the lower cap 18 when the bollard body 10 is inserted into the insertion groove 33, The position is adjusted.

After the lower cap 18 is inserted into the insertion groove 33, the elastic piece 18 is restored to the initial state, and the elastic piece 33 is inserted into the insertion groove 33 of the bollard body 10 The outer peripheral surface of the lower end portion, that is, the slip layer 16 and the elastic covering 14, so that the bollard body 10 is fixed. Even when the bollard body 10 is separated from the fixing means 30 to replace the bollard, the elastic piece 36 is effectively pressed and opened by the lower cap 18, so that the bollard body 10 can be easily separated Do.

When the bollard body 10 is configured to be elastically fixed by the fixing means 30, the bollard body 10 can be easily replaced.

The present invention having such a constitution is advantageous in that it is environmentally friendly because it is manufactured by utilizing the household waste bottom ash, and also helps to solve problems such as securing landfill and environmental pollution due to landfill bottom ash burial. Further, since the core 12 and the elastic shell 14 are made of an EPDM composite material, they are excellent in mutual adhesion and easily recycle the waste bollard body 10.

In addition, since the core member 12 is molded of an EPDM compound so that the core member 12 has an appropriate level of hardness and elasticity, and furthermore, the elastic shell 14 is excellent in shock absorbability, The degree of injury of the pedestrian and the degree of damage to the vehicle are further reduced by the slip layer 16. [ Further, if the slip layer 16 has antifouling property and water repellent property, it is prevented that the bollard is dirty by dust, so that it is also helpful to form a hygienic and clean distance environment.

10. Bollard body 12. Core material
14. Elastic sheath 16. Slip layer
20. Top cap 22. Top cap slip layer
30. Fixing means 32. Injection pipe
33. Insertion groove 34. Flange
36. Elastic piece

Claims (4)

A bollard body 10 having a cylindrical shape opened up and down;
An upper cap 20 coupled to an upper end of the bollard body 10; And
And fixing means (30) for fixing the bollard body (10) to the ground,
The bollard body (10)
A core 12 molded into an EPDM compound including a household garbage bottom ash and having a cylindrical shape;
An elastic envelope (14) formed of an EPDM compound and coated on the outer circumferential surface of the core (12) and having a relatively higher elasticity than the core (12); And
And a slip layer (16) coated on an outer circumferential surface of the elastic cover (14) and having slip and softness characteristics relatively higher than those of the elastic cover (14). The rubber composite material Bollard.
The method according to claim 1,
The EPDM compound to be formed by the core material (12) comprises 100 parts by weight of EPDM and 60 to 100 parts by weight of a bottom ash of household garbage. The bottom ash of the household garbage has an average particle size of 10 to 20 占 퐉. Rubber composite material bollard.
The method according to claim 1,
The slip layer 16 is made of a fluororesin composition comprising 10 to 20 parts by weight of fluoroacrylate, 20 to 30 parts by weight of urethane acrylate, 15 to 25 parts by weight of 2-hydroxyethyl acrylate (2-HEA) (5 to 10 parts by weight) of a photopolymerization initiator (TEGDMA), 5 to 10 parts by weight of pentaerythritol triacrylate (PETA), 5 to 10 parts by weight of a silica nanoparticle, 1 to 10 parts by weight of a photopolymerization initiator and 5 to 30 parts by weight of a solvent Wherein the rubber material is formed by coating a coating material.
The method according to claim 1,
The fixing means (30)
A connection pipe (32) having a lower end embedded in the ground and an upper end inserted into the core (12);
A flange 34 protruding outward from the outer peripheral surface of the upper end of the connecting pipe 32 and having an insertion groove 33 into which the lower end of the bollard body 10 is inserted; And
And an elastic piece (36) protruding inwardly from an outer wall of the insertion groove (33)
The lower cap 18 is provided at the lower end of the bollard body 10 with a lower cap 18 made of a hard material. When the bollard body 10 is inserted into the insertion groove 33, 36), and the elastic piece (36) elastically presses the slip layer (16) and the elastic sheath (14). The rubber composite bollard utilizes a bottom ash for household waste.

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