KR101960471B1 - Portable polyurea regin spraying apparatus - Google Patents

Abstract

The present invention relates to a portable polyurea resin spraying device, and more specifically, a portable polyurea resin applying device which applies a polyurea resin to cracks or an empty space after waterproof work in order to perform waterproof repair work. The portable polyurea resin applying device comprises: a base plate; a dispensing part provided on the base plate, having storage tanks on an upper portion thereof for respectively storing different liquid waterproof agents so that the liquid waterproof agents are supplied from the storage tanks, separating the liquid waterproof agents supplied by compressed air from a compressor installed on the base plate, and pumping and discharging the liquid waterproof agents to a discharge pipe; a mixing part installed on an applying gun and connected to an end of the discharge pipe so that the liquid waterproof agents discharged from at least one discharge pipes are mixed and stirred while being moved by a transfer screw by a predetermined distance; an air supply pipe connected to the mixing part in the dispensing part and supplying the compressed air so that different types of the liquid waterproof agents mixed in the mixing part are pumped and discharged through a spray nozzle installed at an end of the mixing part; and a heating unit having a heating line installed in an air supply pipe coupled to the applying gun in order to heat the air supply pipe (126) and the compressed air by using the power applied from a power supply unit. Thus, the portable polyurea resin applying device allows different types of the liquid waterproof agents to keep a room temperature low pressure state despite changes in the temperature of a workplace, thereby keeping the properties of the polyurea resin, and is easy to carry and convey such that repair work is performed with economic efficiency and improved workability.

Description

[0001] PORTABLE POLYUREA REGIN SPRAYING APPARATUS [0002]

The present invention relates to a portable polyurea resin application device for performing waterproof repair work by applying a polyurea resin to a crack or a crack or an empty space after being waterproofed and, more particularly, to a portable polyurea resin application device, The present invention relates to a portable polyurea resin injection device capable of maintaining a physical property of a polyurea resin and facilitating carrying and transporting, thereby achieving economical and repairing and improving workability.

In order to prevent corrosion or damage caused by moisture of concrete structure, it is required to waterproof or treat the surface of concrete structure. For such waterproofing or curing treatment, waterproofing resin is generally applied to the surface of the concrete structure.

A waterproofing method for a surface of a conventional concrete structure includes a pretreatment step of removing contaminants on the surface of a structure to be waterproofed and planarizing the surface, a step of coating a primer on the pretreated surface to form a primer layer, .

The above-mentioned polyurea is excellent in tensile, tear, impact resistance, abrasion resistance, adhesive force, chemical resistance, acid resistance, heat resistance and cold resistance, and can be applied even in a cold weather. Since the polyurea does not flow on slopes or vertical surfaces, When used for waterproofing, since the polyurea is very fast, when the waterproofing is applied directly to the concrete base surface or when the polyurea is applied after waterproofing the sheet, problems such as lifting or swelling of the base surface or sheet layer may occur And when a long period of time has elapsed, a peeling phenomenon on a vertical plane may occur.

The polyurea is a polymeric material having an elastomeric property formed by the reaction of a polyoxyether polyamine mixture having a functional group with an isocyanate prepolymer and can not be used at room temperature because of the rapid reactivity of amines and isocyanates. So that the coating operation must be carried out.

Particularly, since polyurea has an elastomeric property such as synthetic rubber, it has a structural problem that the concrete structure is contaminated with ultraviolet rays and atmospheric pollutants after the construction, and the property thereof is drastically deteriorated.

That is, although the polyurea waterproofing method as described above has an advantage of excellent waterproofing performance, when the polyurea is directly sprayed on the concrete, the watertightness of the concrete is not good, so that pinholes are generated and the surface is not flat. As quick drying, curing starts immediately after coating, so there is a problem that floating or peeling phenomenon occurs from the concrete base although there is a characteristic that the adhesion is excellent because the shrinking action is large.

In the conventional coating apparatus for applying the polyurea, as shown in FIG. 1, the liquid type waterproofing materials are mixed and sprayed in the application gun 20. At this time, the liquid waterproofing material is sprayed onto the application gun 20 Through the mixing nozzle 10 having the double pipe structure provided at the end of the nozzle.

The liquid type waterproofing material is guided to the mixing portion 10 and then is integrally mixed by the screw 2 at a low pressure of room temperature. The mixing portion 10 is rotated by the rotation of the screw 2, And the mixed liquid waterproofing material is supplied to the injection nozzle 12 as it is supplied to the front of the inner pipe 4. At this time, Compressed air is supplied to the injection nozzle 12 through the space.

However, since the conventional coating gun 20 as described above is designed for the purpose of mixing the liquid waterproofing material at a low temperature and a room temperature, since the four seasons are distinct as in the Republic of Korea and the ambient temperature varies depending on the season, It is difficult to keep the polyurea resin at room temperature and low pressure state. Therefore, there is a disadvantage in that it is impossible to spray the polyurea resin at a room temperature and a low pressure state. As a result, physical properties of the desired polyurea resin can not be expressed as it is, The problem of lifting or peeling phenomenon after the formation of the coating film can not be avoided.

In addition, when a polyurea is applied using a conventional large and large polyurea application device and then repair work is required for reasons such as lifting or cracking, a medium or large polyurea application device necessary for applying a large amount of polyurea It is necessary to provide a coating device which is easily carried by the operator for maintenance work while maintaining the physical properties of the polyurea resin as it is.

DISCLOSURE Technical Problem Accordingly, the present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a liquid dispenser, It is possible to perform waterproof construction without changing physical properties even after polyurea resin injection by keeping the physical properties of the polyurea resin. Especially, it is possible to apply a small amount of polyurea in a state where the operator can easily carry the polyurea resin, The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a portable polyurea resin injecting apparatus which is capable of performing economical repairing and reinforcing operations and improved repairing and reinforcing operations.

The above-described object is achieved by a portable polyurea resin coating apparatus for applying a polyurea resin to a waterproof and repairing work by applying cracks, cracks or hollow spaces after being waterproofed, comprising a base plate 102; A liquid storage tank 104 is provided at the upper part of the base plate 102 to store different liquid waterproofing materials so that the liquid waterproofing material is supplied from the storage tank 104. The compressor 100 installed in the base plate 102 106 for separating the liquid waterproofing material supplied to the compressed air supplied to the compressed air and discharging the liquid waterproofing material to the discharge pipe 110; The liquid waterproofing material connected to the end of the discharge pipe 110 and being discharged from the at least one discharge pipe 110 is mixed and stirred while being moved by a predetermined distance by the transferring screw 122a, ; The liquid type waterproof material mixed in the mixing part 122 connected to the mixing part 122 in the distribution part 108 is compressed and discharged by the injection nozzle 124 provided at the end of the mixing part 122, An air supply pipe 126 for supplying air; A heating line 128a is provided in the air supply pipe 126 coupled to the application gun 120 and a heating unit 128 heating the air supply pipe 126 and the compressed air with a power source applied from a power supply unit The present invention is achieved by a portable polyurea resin injection device.

The pressure regulator 130 is installed in the discharge pipe 110 and regulates the supply pressure of the liquid waterproofing material and the compressed air supplied from the distributor 108.

The pressure regulator 130 may be formed by adding 55 to 75% by weight of bis- (3-acetoxypropyl) polydimethylsiloxane, 45 to 65% by weight of polyhydromethylsiloxane-polydimethylsiloxane to 100% by weight of dihydropolydimethylsiloxane, 20 to 30% by weight of isophoronediamine having a weight%, an amine value of 80 to 120 and an equivalent weight of 110 to 180, 5 to 10% by weight of N-methylmorpholine, 3,3-dimethyl-4,4-diamino- 25 to 35% by weight of hexyl methane and 5 to 8% by weight of pigments, and a second liquid waterproofing agent comprising 3,3-dimethyl-4,4-diphenylmethane diisocyanate, 55% by weight of tolidine-4,4-diisocyanate and 45 to 55% by weight of polydimethylsiloxane oligomer are mixed in a volume ratio of 1: 1.4 in a mixing ratio of 1: 1.4 It is preferable to control the supply pressure of the liquid waterproofing material and the compressed air.

It is preferable that the apparatus further includes a gripper 132 coupled to the distributor 108 to facilitate delivery of the distributor 108 and the base plate.

The present invention is characterized in that a warming part is provided in an air supply pipe and the compressed air is heated by a power source applied from a power supply part to cause a different liquid waterproofing material to be maintained in a room temperature low pressure state in a mixing part of a coating gun, So that it is possible to form a waterproof layer with a consistent quality of polyurea resin, thereby reducing the defective rate. Particularly, when a worker easily handles a small amount of the polyurea resin It is possible to apply the polyurea so that the bonding force between the polyurea and the polyurea that has been previously applied is ensured, thereby achieving economical and stable maintenance and reinforcement work.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing the structure of a conventional coated gun; FIG.
2A is a front view of a portable polyurea resin injecting apparatus according to the present invention.
2B is a side view of the portable polyurea resin injecting apparatus according to the present invention.
3 is a view showing an application gun of a portable polyurea resin injection device according to the present invention.

The configuration and operation of the present invention will now be described with reference to FIGS. 2A, 2B, and 3.

2A and 2B, a base plate 102 of a flat plate is provided, and a plurality of dust-proof portions R are provided on a lower portion of the base plate 102, So that the vibration of the compressor 106 driven by the drive motor can be reduced.

An upper portion of the face plate is provided with a distribution portion 108 and a vibration preventing portion R capable of absorbing vibration is provided between the distribution portion 108 and the base plate 102.

As shown in the figure, a reservoir tank 104 for storing different liquid waterproofing materials is installed at the upper part of the distributor 108. The liquid waterproof material of the reservoir tank 104 is supplied to the distributor 108 .

According to the present invention, since all the components mounted on the base plate 102 must be able to be carried by the operator, the storage tank 104 is also made compact, and the compressor 106 and the distributor 108 are also small- .

2A and 2B, the operator grips the grip portion 132 to grip the dispensing portion 108 and the base plate 102, It is desirable to facilitate the transportation of the ink.

When the compressed air of the compressor 106, which is operated by a drive motor (not shown), is supplied to the distribution portion 108, the liquid waterproof material of the storage tank 104 supplied to the distribution portion 108 The air supply pipe 126 connected to the distribution unit 108 or the compressor 102 from the compressor 106 to the mixing unit 122 installed in the coating gun 120 is connected to the flexible hose and the application gun Such as the air flow path 126a formed in the inside of the air flow path 120, as shown in FIG.

3, the compressed air generated in the compressor 106 passes through the hose connected to the distributor 108 or the compressor 106 and the air passage 126a in the spray gun 120, And is sent to the injection nozzle 124 through the air passage 126a inside the nozzle 122.

As shown in FIG. 3, the mixing unit 122 has a double pipe structure. In the inner pipe 122b, the transfer screw 122a is pivotally rotated to mix and mix different liquid- The compressed air generated in the compressor 106 is passed through the air flow path 126a formed between the inner pipe 122b and the outer pipe 122c as described above.

At this time, a heating part 128 around which a heating line 128a is wound is installed on the outer diameter of the air supply pipe 126 coupled to the application gun 120. The heating part 128 is connected to a heating line (not shown) 128a warm the air supply pipe 126 so that the compressed air passing through the air supply pipe 126 on the application gun 120 side can be heated to a constant temperature.

The heating of the air supply pipe 126 at the warming part 128 allows the air supply pipe 126 coupled to the application gun 120 to maintain a constant temperature (for example, 35 ° C to 40 ° C) Which means that the compressed air passing through the air supply pipe 126 is prevented from dropping below a predetermined temperature.

In addition, since the compressed air is expected to pass quickly toward the injection nozzle 124, the injection nozzle 124 is filled in the injection nozzle 124 in a mixed state of the liquid type waterproof materials, The compressed air is maintained in a warm state by the warming unit 128 because the speed is considerably reduced and therefore it is not discharged at a high speed but discharged at a low speed.

The discharge pipe 110 is provided with a pressure regulating part 130 for regulating the supply pressure of the compressed air supplied to the air supply pipe 126 and the liquid waterproof material pumped by the distributor 108, It is preferable that the supply pressure of the compressed air supplied to the air supply pipe 126 is adjusted when the supply pressure of the liquid waterproofing material is adjusted as well as the liquid waterproofing material is supplied at an appropriate pressure.

Here, the pressure regulator 130 regulates the supply pressure of the liquid waterproofing material and the compressed air supplied from the distributor 108 so that the first liquid-impervious material and the second liquid-impervious material are mixed at a volume ratio of 1: 1.4.

That is, the liquid waterproofing material of the present invention is a heterogeneous mixture comprising the first liquid waterproofing material and the second liquid waterproofing material.

The first liquid waterproofing material may include 55 to 75% by weight of bis- (3-acetoxypropyl) polydimethylsiloxane, 45 to 65% by weight of polyhydromethylsiloxane-polydimethylsiloxane, 100 to 100% by weight of dihydrogenpolydimethylsiloxane, 20 to 30% by weight of an isophoronediamine having an amine value of 80 to 120 and an equivalent of 110 to 180, 5 to 10% by weight of N-methylmorpholine, 3,3-dimethyl-4,4-diamino-dicyclohexylmethane 25 To 35% by weight of the pigment and 5 to 8% by weight of the pigment.

The dihydropolydimethylsiloxane, bis- (3-acetoxypropyl) polydimethylsiloxane, and polyhydroxymethylsiloxane-polydimethylsiloxane serve to make the polyurea firmly adhere to any material such as concrete or iron plate It is preferable to use three kinds of them at the same time.

It is preferable that 55 to 75% by weight of bis- (3-acetoxypropyl) polydimethylsiloxane and 45 to 65% by weight of polyhydromethylsiloxane-polydimethylsiloxane are contained in 100% by weight of the dihydropolydimethylsiloxane.

If the amount of isophorone diamine is less than 20% by weight, the curing time is prolonged and a side reaction occurs to deteriorate the physical properties. If the isophorone diamine is more than 30% by weight, the working time is too short. The preferred isophoronediamine according to the present invention has an amine value of from 80 to 120 and an equivalent of from 110 to 180. The use of the isophoronediamine having an amine value of from 110 to 180,

When the amount of the chain extender is more than 5 wt%, the degree of crosslinking decreases and the strength or elongation of the coating film is poor. When the amount of the chain extender is more than 10 wt%, an uncured portion occurs.

The 3,3-dimethyl-4,4-diamino-dicyclohexylmethane reacts with the second liquid water-repellent, 3,3-Tolydien-4,4-diisocyanate and polydimethylsiloxane oligomer to form a urea bond And is an extender for improving the strength and elongation of the coating film.

The pigment is a commercial pigment with the required color (e. G., Green) and may be a known pigment that can be mixed with commonly used waterproofing materials known in the art. Exemplary preferred pigments are phthalocyanine green, iron oxide green, and the like. However, when the amount is less than 5% by weight, the color does not appear well, and when it is more than 8% by weight, the mixture is too thick and has a high viscosity.

On the other hand, the above-mentioned second liquid waterproofing material is composed of 100 weight% of 3,3-dimethyl-4,4-diphenylmethane diisocyanate, 55 to 65 weight% of 3,3-tolyldene- % And polydimethylsiloxane oligomer 45 to 55% by weight.

The 3,3-toluidine-4,4-diisocyanate is a curing agent for increasing the adhesive strength of the coating film.

The 3,3-toluidine-4,4-diisocyanate is added in an amount of 55 to 65% by weight based on 100% by weight of the 3,3-dimethyl-4,4-diphenylmethane diisocyanate, If added in an amount of less than 1 wt.%, Storage stability becomes poor. When added in an amount of more than 65 wt.%, Viscosity tends to be high.

In addition, the polydimethylsiloxane oligomer not only provides an improved impact strength, but also provides various physical properties such as heat resistance, moisture resistance, mechanical properties and processability.

The polydimethylsiloxane oligomer is added in an amount of 45 to 55% by weight based on 100% by weight of the 3,3-dimethyl-4,4-diphenylmethane diisocyanate. When the polydimethylsiloxane oligomer is added in an amount of less than 45% by weight, If it is added in an amount of more than 55% by weight, there is a problem in that the stirring efficiency is lowered and the hardness is hardened to lower the adhesive strength and the peeling off.

Conventional polyurea is eco-friendly because it does not pollute the environment, it can be applied in winter because it is less influenced by temperature and it can be applied by spraying, so it can be easily applied to corners of concrete structures. It is a material that is widely used as a waterproof material because of its advantages.

In addition, due to the fast curing properties, the curing time is less than 30 seconds after the application and the complete curing time is less than 30 minutes. Compared to the curing time (about 2 hours for touching dry and 24 hours for complete curing) It is possible to shorten the time because other processes can be performed immediately.

However, as mentioned in the foregoing description, when applied at too high a curing time and at a low temperature of room temperature, pinholes on the surface of the concrete structure and large shrinkage due to rapid curing time cause a difference between the invisible concrete surface and the polyurea waterproofing layer And the peeling phenomenon occurs.

The polyurea injected after mixing the first liquid-impermeable material and the second liquid-impermeable material has the time of curing after the polyurea is applied, but the contraction ratio is lowered to suppress the occurrence of lifting or peeling. , It is possible to secure a longer storage period.

The polyurea mixed with the first and second liquid waterproofing materials is imparted with strength and toughness in a molecular structure and can be used for various purposes such as waterproofing, method, and flooring, and the first liquidproofing material and the second liquid- : 1.4. If the ratio is outside this range, a low molecular weight polyurea is formed or an uncured portion is formed. Therefore, the mixing ratio is required to be maintained by the pressure regulator 130 so that the mixing ratio is maintained. The coating film 120 is applied to the coating film 120. At this time, if the coating film can be applied at a low temperature and a room temperature by the heating part 128, ozone resistance is better than that of the conventional coating film waterproofing material, And is therefore very suitable for a portable polyurea resin injecting apparatus according to the invention.

100: Portable polyurea resin injection device
102: base plate 104: storage tank
106: compressor 108: distributor
110:
120: application gun 122: mixing part
122a: Feed screw 122b: Inner pipe
122c: Appearance 124: injection nozzle
126: air supply pipe 126a: air flow path
128: heating part 128a: heating line
130: Pressure regulator
132:

Claims (4)

A base plate 102; A liquid storage tank 104 is provided at the upper part of the base plate 102 to store different liquid waterproofing materials so that the liquid waterproofing material is supplied from the storage tank 104. The compressor 100 installed in the base plate 102 106 for separating the liquid waterproofing material supplied to the compressed air supplied to the compressed air and discharging the liquid waterproofing material to the discharge pipe 110; The liquid waterproofing material connected to the end of the discharge pipe 110 and being discharged from the at least one discharge pipe 110 is mixed and stirred while being moved by a predetermined distance by the transferring screw 122a, ; The liquid type waterproof material mixed in the mixing part 122 connected to the mixing part 122 in the distribution part 108 is compressed and discharged by the injection nozzle 124 provided at the end of the mixing part 122, An air supply pipe 126 for supplying air; A heating unit 128 installed in the air supply pipe 126 coupled to the coating gun 120 to warm the air supply pipe 126 and the compressed air to a power source supplied from a power supply unit, And a pressure regulating part (130) installed at the distributor (110) and adapted to regulate a supply pressure of the liquid waterproofing material and the compressed air to be pumped by the distributor (108) In which a waterproofing and repairing work is carried out,
The pressure regulator (130)
55 to 75% by weight of bis- (3-acetoxypropyl) polydimethylsiloxane, 45 to 65% by weight of polyhydrodimethylsiloxane-polydimethylsiloxane, and 80 to 120% of amine are added to 100% by weight of dihydropolydimethylsiloxane, 20 to 30% by weight of isophorone diamine of 110 to 180, 5 to 10% by weight of N-methylmorpholine, 25 to 35% by weight of 3,3-dimethyl-4,4-diamino-dicyclohexylmethane, 8% by weight, based on 100% by weight of 3,3-dimethyl-4,4'-diphenylmethane diisocyanate, and 3,3-tolylene-4,4-diisocyanate The waterproof material and the compressed air supplied from the distributor 108 are adjusted so that the second liquid waterproofing material mixed with 55 to 65% by weight and the polydimethylsiloxane oligomer 45 to 55% by weight is mixed at a volume ratio of 1: 1.4 Wherein the polyurea resin is injected into the injection port.

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