KR101678338B1 - Apparatus for heating and scattering sealent for road repair - Google Patents

Abstract

The present invention relates to a sealant coating apparatus for repairing a road and, more specifically, to a sealant coating apparatus for repairing a road capable of injecting and coating a sealant for repair into a cut groove space after cutting, digging, and removing a damaged portion of a road to be repaired. That is, the sealant coating apparatus for repairing a road includes: a sealant tank in which a sealant for waterproofing is stored and which is mounted on a body frame to be towed by a vehicle; and a boiler melting the sealant for waterproofing in the sealant tank into a predetermined viscosity. The sealant for waterproofing is automatically exposed through a sealant injection and coating gun. Therefore, the sealant coating apparatus for repairing a road can conveniently inject and coat a road surface to be repaired with a sealant for waterproofing while a worker has a sealant injection and coating gun.

Description

TECHNICAL FIELD [0001] The present invention relates to a sealant coating apparatus for road maintenance,

The present invention relates to a sealant applicator for road maintenance, and more particularly, to a sealant applicator for road repair, which is capable of injecting and applying a sealant for repair into a recessed groove space after cutting a damaged portion of the road for repairing, ≪ / RTI >

In general, asphalt paved roads are susceptible to cracking or road surface deformation due to severe plastic deformation with respect to temperature or load, extraneous factors such as use of heterogeneous concrete and asphalt pavement material, Cracks are generated and frequent repair work is required.

Particularly, the asphalt pavement layer is peeled off from the concrete surface due to repetitive vehicle load, and if the water penetrates into the concrete of the lower layer through the asphalt pavement crack, a structural dangerous situation may occur.

Therefore, asphalt paving and repairing methods for applying the primer adhesive on the concrete surface, applying the waterproof sealant for forming the waterproof layer on the concrete surface, and installing the asphalt on the concrete surface have been carried out.

That is, by forming the primer adhesive layer and the waterproofing sealant layer on the concrete surface, it is possible to absorb stress and deformation between the asphalt pavement layer and the concrete, to cope with the horizontal and vertical loads due to the vehicle load, Deformation, and horizontal behavior of the lower layer, minimizing the occurrence of cracks, and also suppressing or delaying the generation of cracks as much as possible.

By applying a waterproof sealant on the concrete surface after applying the primer adhesive on the concrete surface, the waterproof sealant improves the durability by integrating the asphalt pavement and the concrete together with the waterproof function and simultaneously protecting the asphalt pavement and concrete As a reinforcement function.

However, some sections of the asphalt pavement road and the concrete pavement road are damaged or damaged due to various reasons such as cracks due to external force, weather conditions, aging, etc. Especially, the asphalt pavement layer is subjected to plastic deformation against temperature or load, Deformation, etc. can easily occur, and frequent repair work is required because of the use of heterogeneous concrete and asphalt pavement materials, external factors such as permeability and temperature change, lifting, peeling and cracking.

Therefore, a method of repairing a damaged road is a method of cleanly removing and re-packing a damaged part while flattening a damaged part. First, a broken part is cut and removed using a road surface cutter or a breaker, and a waterproof rubber material The sealant is applied to the surface of the substrate.

However, in the conventional repair work for asphalt pavement cracking, the step of applying the waterproof sealant has the following problems.

First, in order to apply a primer adhesive or a waterproof sealant in the form of a lump of high viscosity into a groove space formed by a breaker or the like, the primer adhesive or waterproof sealant in a lump form must be heated to a certain degree by a burner device The workability of the worker is lowered and the waiting time for the waterproof sealant to be melted by a separate burner device takes a long time.

Second, if an emulsion such as a primer adhesive dissolved in a burner unit or a sealant for waterproofing is poured on the concrete surface, the worker must unfold uniformly using a working tool, so that the emulsion application work and the waiting time for hardening take too long, And the productivity is greatly reduced.

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an object of the present invention is to provide a sealant tank having a waterproof sealant on a vehicle frame that can be towed by a vehicle, And the water sealant is automatically discharged through the sealant injection coating gun, so that the operator can conveniently apply the waterproof sealant to the repair surface (the formed space formed by cutting) of the sealant injection coating gun The present invention provides a sealant application device for road maintenance.

To achieve the above object, the present invention provides a vehicle frame comprising: a vehicle body frame which can be towed by a vehicle; A sealant tank mounted on the body frame for storing a waterproof sealant; A boiler mounted on the vehicle body frame for heating and circulating heat medium oil for making the waterproofing sealant in the sealant tank at a certain viscosity or less; A heating line circulatingly connected between the boiler and the interior of the sealant tank so that the heat medium oil heated in the boiler circulates back to the boiler through the interior of the sealant tank; A hydraulic pump mounted on the discharge side of the sealant tank to supply a waterproof sealant to the sealant injection coating gun when the sealant for waterproofing becomes a certain viscosity or less by the heat medium oil circulating through the heating line in the sealant tank; A sealant injecting gun for injecting a waterproof sealant supplied from the hydraulic pump into a cutting groove for repairing the road; And a control panel for performing drive control on the boiler and the hydraulic pump; The present invention provides a sealant applicator for road maintenance, comprising:

Preferably, a pulling rod for connection with a vehicle is integrally formed at a front end portion of the vehicle body frame.

Particularly, the sealant injection coating gun includes: a coated gun body portion having a sealant opening / closing valve inside and a mounting handle gripped by an operator outside; And a nozzle unit formed at an end of the application gun body for spraying a sealant into a cutting groove for repairing the road.

The nozzle unit may include an arcuate nozzle body having a flat bottom surface for flattening the injected sealant into a cutting groove for repairing the road, and a nozzle hole formed on the bottom surface of the nozzle body to discharge the sealant.

Preferably, a cradle for guiding an extending direction of the sealant supply hose is installed at a predetermined position of the vehicle body frame at a predetermined height, the sealant supply hose being connected between the inflow pump and the sealant injection coating gun.

Through the above-mentioned means for solving the problems, the present invention provides the following effects.

First, unlike the conventional method of manually applying a waterproof sealant in a cutting groove, which is a punching place for cutting the damaged portion of a road for repairing, it provides a convenient point that can be practiced almost automatically.

Second, by mounting a sealant tank in which a waterproof sealant is stored in a body frame to be able to be towed by a vehicle, and a boiler capable of melting a waterproof sealant below a certain viscosity, a worker can manually handle waterproof sealant using a burner Therefore, workability and productivity for sealant injection application can be greatly improved.

Thirdly, since only the direction of the sealant injection application gun extending toward the rear of the vehicle is guided at the same time as the vehicle runs, the sealant application work time can be greatly shortened.

1 and 2 are a perspective view and a side view showing a sealant applicator for road maintenance according to the present invention,
3 is a schematic view showing a sealant application operation by a road sealant applicator according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As described above, the damaged part of the road is cut and the damaged part is cut by using a cutting machine for repairing.

A waterproof sealant for forming a waterproof layer (for example, an emulsion made of a modified rubber and a special polymer modified asphalt material) is applied to a repair surface (a groove formed by cutting) of a road on which road damage is broken by the cutting process , The new Ascon will be installed.

A sealant tank having a waterproof sealant is mounted on a vehicle frame which can be towed by a vehicle, and a boiler or the like capable of melting a waterproof sealant in a sealant tank to a certain viscosity or less is mounted. A sealant for waterproofing It is the point that the operator can quickly and conveniently apply the waterproof sealant to the repair surface of the road while holding the sealant injection spray gun.

1 and 2 are a perspective view and a side view showing a sealant applying apparatus for road maintenance according to the present invention.

1 and 2, reference numeral 10 denotes a vehicle body frame which can be towed by a vehicle.

A towing rod 12 is integrally formed at a front end portion of the vehicle body frame 10 and can be connected to a general vehicle (e.g., a truck, a work vehicle, or the like) in a towable manner.

On the body frame 10, a sealant tank 20 for storing a waterproof sealant for road repair is mounted and fixed.

A boiler 30 for heating and circulating the heat medium oil for making the waterproofing sealant in the sealant tank 20 at a predetermined viscosity or less is mounted and fixed at a position adjacent to the sealant tank 20 on the body frame 10.

At this time, a heating line 40 through which the heat medium oil is circulated is connected between the boiler 30 and the inside of the sealant tank 20.

After the heating fluid heated in the boiler 30 is supplied along the heating line 40 extending to the inside of the sealant tank 20, the waterproof sealant is heated and then circulated to the boiler 30 again.

A hydraulic pump 50 for discharging and supplying a waterproof sealant to the sealant injection coating gun 60 is mounted on the upper discharge side of the sealant tank 20.

When the sealant for waterproofing in the sealant tank 20 is melted to a certain viscosity or less by the high-temperature heat medium oil circulating through the heating line 40 in the sealant tank 20, the suction force of the hydraulic pump 50 And discharged to the sealant injection coating gun 60 side.

A sealant supply hose 52 connected between the inflow pump 50 and the sealant injection application gun 60 is fixed to a predetermined position of the body frame 10 at a predetermined height and is inserted into the sealant injection application gun 60 (Not shown) is mounted via a bearing.

The sealant injection coating gun 60 has a structure in which a waterproof sealant supplied from a hydraulic pump 50 is injected into a cutting groove for repairing a road, and a sealant opening / closing valve (not shown) And a coating gun body portion 64 having a mounting handle 62 that can be held by a hand. The tip portion of the coating gun body portion 64 is provided with a nozzle portion (66) are formed.

At this time, the nozzle unit 66 includes a nozzle body 66-1 and a nozzle hole 66-2 formed on the bottom surface of the nozzle body 66-1 to discharge a sealant.

Preferably, the nozzle body 66-1 of the nozzle portion 66 is formed by injecting a sealant discharged from the nozzle hole 66-2 into a cutting groove for repairing the road, and simultaneously flattening the injected sealant The bottom surface is provided in a flat arcuate shape.

On the other hand, a control panel 70, which performs drive control for the boiler 30 and the hydraulic pump 50, is mounted at a predetermined position of the vehicle body frame 10.

Hereinafter, the operation of the sealant applicator for road maintenance according to the present invention will be described.

After the process of cutting the damage area by cutting equipment using the cutting equipment for repairing the damaged part of the road, the repair surface of the road where the damaged part of the road is broken by the cutting process (the groove space formed by the cutting) A process of applying a waterproof sealant for forming a waterproof layer is performed.

To this end, the boiler 30 is operated using the control panel 70 first.

Heat medium oil heated in the boiler 30 is supplied along the heating line 40 extending to the inside of the sealant tank 20 to heat the waterproof sealant in the sealant tank 20.

The sensing signal of the sensor for measuring the viscosity and the temperature of the waterproof sealant is transmitted to the control panel and when it is determined that the viscosity of the waterproof sealant is lower than a predetermined viscosity in the control panel 70, And controls to drive the mounted hydraulic pump 50 on the discharge side.

Therefore, the waterproof sealant in the sealant tank 20 is sucked by the suction driving force of the hydraulic pump 50 and is supplied to the sealant injection coating gun 60 side.

At this time, the worker waits for the operation while holding the mounting handle 62 of the sealant injection coating gun 60, and operates the opening / closing valve in the coating gun body portion 64 to open.

The sealant for waterproofing from the hydraulic pump 50 flows to the nozzle unit 60 through the opening and closing valve of the coated gun body unit 64 and then flows through the nozzle hole 66-2 of the nozzle unit 60 The sealant is discharged and injected, and finally the operator injects the sealant to be injected into the cutting groove for repairing the road.

Particularly, when the operator performs the operation of sliding the nozzle body 66-1 of the nozzle unit 66 in all directions, as shown in the attached FIG. 3, the maintenance of the road by the flat bottom surface of the nozzle body 66-1 The sealant applied with the sealant is flattened in the cutting groove for the sealant, so that a separate sealant planarization operation is not required.

As described above, in contrast to the manual operation in which the operator previously applied the waterproof sealant by using the burner to apply the sealant, the sealant tank in which the waterproof sealant is stored in the body frame so as to be able to be towed by the vehicle, A waterproof sealant coating operation can be carried out almost automatically. Therefore, workability and productivity for sealant injection coating can be greatly improved.

Further, since only the direction of the sealant injection application gun extending toward the rear of the vehicle is guided at the same time as the vehicle travels, the sealant application work time can be greatly shortened.

On the other hand, RD (Polymerized trimethyl dihydroquinoline) may be added to the sealant supply hose 52 to increase oxidation resistance. This RD increases ozone resistance and oxidation resistance, and prevents corrosion and oxidation of the anti-scattering plate 110.

The present invention preferably includes 0.4 to 1.2 parts by weight of RD relative to 100 parts by weight of the sealant supply hose (52). This is because if the addition amount of RD is less than the above-mentioned range, it is difficult to obtain oxidation resistance, and if it exceeds the above-mentioned range, the density and firmness of the tissue are affected.

Since the RD is added to the sealant supply hose 52, the oxidation resistance of the sealant supply hose 52 is greatly improved, thereby maximizing the service life of the product.

The control panel 70 may be formed with a coating layer coated with the anti-fouling coating composition so as to effectively prevent and remove the adhesion of contaminants. The antifouling coating composition contains boric acid and sodium carbonate in a molar ratio of 1: 0.01 to 1: 2, and the total content of boric acid and sodium carbonate is 1 to 10 wt% with respect to the total aqueous solution.

In addition, sodium carbonate or calcium carbonate may be used as a material for improving the coating property of the coating layer, but sodium carbonate is preferably used. The molar ratio of boric acid to sodium carbonate is preferably 1: 0.01 to 1: 2. If the molar ratio is out of the above range, the coating property of the base material is lowered or the moisture adsorption on the surface is increased.

The boric acid and sodium carbonate are preferably used in an amount of 1 to 10% by weight in the aqueous solution of the composition. If less than 1% by weight, the coating property of the base material is deteriorated. If the amount is more than 10% by weight, It is easy to occur.

On the other hand, as a method of applying the present anti-fouling coating composition onto a substrate, it is preferable to coat it by a spray method. The thickness of the final coated film on the substrate is preferably 500 to 2000 angstroms, and more preferably 1000 to 2000 angstroms. When the thickness of the coating film is less than 500 ANGSTROM, there is a problem that it deteriorates in the case of a high-temperature heat treatment. When the thickness is more than 2000 ANGSTROM, crystallization of a coated surface tends to occur.

The antifouling coating composition may be prepared by adding 0.1 mol of boric acid and 0.05 mol of sodium carbonate to 1000 mL of distilled water and stirring.

Further, the sealant tank 20 can be coated with a coating composition for preventing corrosion.

The coating composition was prepared by mixing 100 parts by weight of a water-soluble resin composition prepared by mixing 80% by weight of resorcinol diglycidyl ether and 20% by weight of propanol amine with 100 parts by weight of hexamethylated- And 1 to 10% by weight of hexamethylated-hexamethylol melamine.

In the present invention, the use of resorcinol diglycidyl ether in a more environmentally friendly sealant tank 20 is improved by utilizing characteristics such as excellent chemical resistance and dimensional stability, properties such as corrosion resistance of propanolamine, and excellent lubrication properties of melamine derivatives. A coating for preventing corrosion can be formed.

The method for applying the coating composition for preventing corrosion is not particularly limited, but it is preferable to apply the coating composition to the surface of the sealant tank 20 such that the dry film thickness is 10 to 30 占 퐉. If the dry film thickness is less than 10 탆, the service life can be shortened, and if it exceeds 30 탆, there is no problem in function but the economic advantage is reduced.

In addition, the sealant tank 20 coated with the coating composition for preventing corrosion is cured for 10 to 30 minutes at 100 to 200 ° C, preferably at 150 to 180 ° C for 10 to 50 minutes after air drying, It is possible to obtain a coated film.

Then, the mounting handle 62 may be coated with a perfume material having a sterilizing function. The functional oil may be mixed with 95 to 97% by weight of a perfume and 3 to 5% by weight of a functional oil. The functional oil may include 50% by weight of myrtle oil, And 50% by weight of a cube oil (Litsea cubeba oil).

Here, the functional oil is preferably mixed with 3 to 5% by weight based on the perfume. If the mixing ratio of the functional oil is less than 3% by weight, the effect is insignificant. If the mixing ratio of the functional oil exceeds 3 to 5% by weight, the function is not greatly improved, but the manufacturing cost is greatly increased.

The major chemical components of myrtle oil are cineol and myrtenol. It is extracted by steam distillation method in sprout and small branches. It is yellowish and has a refreshing and refreshing aroma. It has good effect on sterilization and side effects.

Litsea cubeba oil extracts oil from fruit using steam distillation method. It is sweet but similar to lemongrass. It has a strong aroma. Citral, which is more than 85% as main chemical ingredient, linalol, neral, etc. It has a strong antiseptic effect, and it has excellent action effect of killing bacteria and the like by bactericidal action.

Since the functional oil is coated on the mounting handle 62, the mounting handle 62 is reliably sterilized, thereby protecting the health of the operator.

In addition, the nozzle portion 66 of the metal material may be formed with a coating layer of a surface coating material of a metal material to prevent corrosion of the surface from dust, contaminants, and the like. The coating layer is composed of 60 wt% of alumina powder, 30 wt% of NH ₄ Cl, 2.5 wt% of zinc, 2.5 wt% of copper, 2.5 wt% of magnesium and 2.5 wt% of titanium.

The alumina powder is added for the purpose of sintering, entangling, fusion prevention, etc. when heated to a high temperature. When such an alumina powder is added in an amount of less than 60% by weight, the effect of sintering, entangling and fusion prevention is deteriorated. When the alumina powder exceeds 60% by weight, the above effect is not further improved, but the material cost is greatly increased. Therefore, it is preferable to add 60 wt% of the alumina powder.

The NH ₄ Cl reacts with steam, aluminum, zinc, copper, and magnesium to activate diffusion and penetration. This NH ₄ Cl is added in an amount of 30% by weight. When NH ₄ Cl is added in an amount of less than 30% by weight, the reaction with aluminum, zinc, copper and magnesium in a vapor state is not properly performed, thereby failing to activate diffusion and penetration. On the other hand, if NH ₄ Cl exceeds 30 wt%, the above-mentioned effect is not further improved, but the material cost is greatly increased. Therefore, it is preferable to add 30 wt% of NH ₄ Cl.

The zinc is compounded to prevent corrosion of the metal that is in contact with water and to be used for electrical applications. 2.5% by weight of this zinc is mixed. If the mixing ratio of zinc exceeds 2.5% by weight, corrosion of the metal which is in contact with water can not be properly prevented. On the other hand, when the mixing ratio of zinc exceeds 2.5% by weight, the above-mentioned effect is not further improved, but the material cost is greatly increased. Therefore, it is preferable that zinc is mixed at 2.5% by weight.

The copper is combined with the aluminum to increase the hardness and tensile strength of the metal. This copper is mixed at 2.5% by weight. If the mixing ratio of copper is less than 2.5 wt%, the hardness and tensile strength of the metal can not be properly increased when combined with aluminum. On the other hand, when the mixing ratio of copper exceeds 2.5% by weight, the above-mentioned effect is not further improved, but the material cost is greatly increased. Therefore, copper is preferably mixed at 2.5% by weight.

Since the pure metal of magnesium has a low structural strength, it is used in combination with the zinc and the like to improve the hardness, tensile strength and corrosion resistance of the metal. This magnesium is mixed at 2.5% by weight. When the mixing ratio of magnesium is less than 2.5% by weight, the hardness, the tensile strength and the corrosion resistance to the salt water of the metal are not greatly improved when they are combined with zinc and the like. On the other hand, when the mixing ratio of magnesium exceeds 2.5% by weight, the above-mentioned effect is not further improved, but the material cost is greatly increased. Therefore, it is preferable that magnesium is mixed with 2.5% by weight.

The titanium is a lightweight, hard and corrosion resistant transition metal element with a silver-white metallic luster. Because it has excellent corrosion resistance and specific gravity, it weighs only 60% of steel. Therefore, the weight of the coating material applied to the metal base material is reduced, Excellent water resistance and corrosion resistance.

This titanium is mixed at 2.5% by weight. If the mixing ratio of titanium is less than 2.5% by weight, the weight of the coating material applied to the metal base material is not so reduced, and glossiness, water resistance and corrosion resistance are not greatly improved. On the other hand, when the mixing ratio of titanium exceeds 2.5% by weight, the above effect is not further improved, but the material cost is greatly increased. Therefore, titanium is preferably mixed at 2.5% by weight.

The method of applying the surface of the nozzle unit 66 according to the present invention is as follows.

The base material in which the coating layer is to be formed and the coating material blended in the above composition are put in the closed furnace together with the argon gas being injected at a rate of 2 L / min in order to prevent oxidation of the base material inside the furnace. And maintained at a temperature of 700 ° C to 800 ° C for 4 to 5 hours.

The aluminum powder, alumina powder, zinc, copper, magnesium, and titanium blend form a mixture of the aluminum powder, zinc, copper, magnesium, and titanium in a vapor state, Thereby forming a coating layer.

After the coating layer is formed, the inside temperature of the closed portion is maintained at a temperature of 800 ° C. to 900 ° C. for 30 to 40 hours so that an anti-corrosive coating layer is formed on the surface of the nozzle portion 66, . At this time, the abrupt temperature change in the above-mentioned process may cause the coating layer on the surface of the base material to peel off, so that the temperature is changed at a rate of 60 ° C / hr.

The coating layer of the present invention has the following advantages.

Since the application layer of the present invention has a very wide range of applications, it can be applied by various methods such as curtain coating, spray painting, dip coating, flooding and the like.

In addition to the principle protection against corrosion and / or scale, the application layer of the present invention can be applied with a very thin layer thickness in addition to improving electrical conductivity, as well as material and cost saving. A thin electrically conductive primer may be applied to the top of the application layer if high electrical conductivity is desired after the hot forming process.

After the molding process or the hot forming process, the coating material can be retained on the surface of the substrate, for example, to increase scratch resistance, to improve corrosion protection, to meet aesthetic appearance, to prevent discoloration, And may be provided as a primer for conventional downstream processes (e.g., impregnated and electro-mobile dip application).

Since the coating layer made of alumina powder, NH ₄ Cl, zinc, copper, magnesium, and titanium is applied to the nozzle unit 66 of the present invention, corrosion of the surface of the nozzle unit 66 due to dust, Can be prevented.

10: Body frame
12: Towing rod
14: Cradle
20: Sealant tank
30: Boiler
40: heating line
50: Hydraulic pump
52: sealant supply hose
60: sealant injection application gun
62: Mounting handle
64: coating gun body part
66:
66-1: nozzle body
66-2: nozzle hole
70: control panel

Claims (5)

A vehicle body frame 10 which can be towed by the vehicle;
A sealant tank 20 mounted on the vehicle body frame 10 to store a waterproof sealant;
A boiler 30 mounted on the vehicle body frame 10 to heat and circulate heat medium oil for making the waterproofing sealant in the sealant tank 20 to a predetermined viscosity or less;
A heating line 40 which is circulatively connected between the boiler 30 and the inside of the sealant tank 20 so that the heat medium oil heated in the boiler 30 circulates to the boiler 30 via the inside of the sealant tank 20 );
When the sealant for waterproofing becomes a certain viscosity or less by the heat medium oil circulating through the heating line 40 in the sealant tank 20, the sealant is applied to the sealant tank 20 through the sealant injection coating gun 60 (50);
A sealant injection application gun 60 for injecting a waterproof sealant supplied from the hydraulic pump 50 into a cutting groove for repairing the road; And
And a control panel (70) for performing drive control on the boiler (30) and the hydraulic pump (50);
A towing rod 12 for connecting with a vehicle is integrally formed at a front end portion of the body frame 10;
The sealant injection coating gun 60 includes a coated gun body portion 64 having a sealant opening / closing valve installed therein and an external mounting handle 62 to be gripped by an operator; And a nozzle portion 66 formed at an end of the application gun body portion 64 for spraying a sealant into the repair groove for repairing the road;
The nozzle unit 66 includes an arcuate nozzle body 66-1 having a bottom surface flattened so as to flatten the sealant injected into the repair groove for repairing the road, a sealant formed on the bottom surface of the nozzle body 66-1 And a nozzle hole (66-2) for discharging it;
A cradle 14 for guiding the extension direction of the sealant supply hose 52 connected to the space between the inflow pump 50 and the sealant injection application gun 60 at a predetermined height is provided at a predetermined position of the vehicle body frame 10, Lt; / RTI >
The sealant supply hose 52 is provided with RD (Polymerized trimethyl dihydroquinoline), 0.4 to 1.2 parts by weight of RD is added to 100 parts by weight of the sealant supply hose 52,
The coating layer on which the anti-fouling coating composition is applied is formed on the control panel 70. The anti-fouling coating composition contains boric acid and sodium carbonate in a molar ratio of 1: 0.01 to 1: 2, The film thickness is 500 to 2000 ANGSTROM,
The sealant tank 20 is coated with a coating composition for preventing corrosion, and the coating composition for corrosion prevention is prepared by mixing 80 wt% of resorcinol diglycidyl ether and 20 wt% of propanol amine 1 to 10% by weight of hexamethylated-hexamethylol melamine is added to 100% by weight of the water-soluble resin composition prepared, and the coating composition for corrosion prevention is applied to the surface of the sealant tank 20 And the sealant tank 20 coated with the corrosion inhibiting coating composition is air dried for 10 to 30 minutes and cured at 100 to 200 DEG C for 10 to 50 minutes;
The mixing ratio of the perfume material and the functional oil is in the range of 95 to 97% by weight of the perfume material and 3 to 5% by weight of the functional oil, and the functional oil 50% by weight of myrtle oil, and 50% by weight of Litsea cubeba oil;
A coating layer is formed on the nozzle portion 66. The coating layer is composed of 60 wt% of alumina powder, 30 wt% of NH ₄ Cl, 2.5 wt% of zinc, 2.5 wt% of copper, 2.5 wt% of magnesium and 2.5 wt% Wherein the sealant applying device is a sealant applying device for road maintenance. delete delete delete delete

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