JP2016163860A - Execution method of polyurea resin, and portable execution device of polyurea resin - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an execution method of a polyurea resin and an execution device of the resin capable of being easily executed by using a simple execution device of a handy type without requiring a large scale device or the like and high expertise.SOLUTION: A polyurea resin material, a methyl ethyl ketone (MEK) with high solubility, and a pressurized gas generating agent are mixed and filled beforehand in a spray-can of a liquid gas type, and a coating film of the polyurea resin is formed by mixing the two kinds of raw materials pushed out and supplied from the spray-can and spraying the same with a spray gun.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a construction method devised so that a polyurea resin can be sprayed onto a construction object and the polyurea resin can be easily constructed on the construction object, and a portable polyurea resin construction apparatus for carrying out the construction of the polyurea resin. .

  The polyurea resin is a resin compound produced by mixing two liquids of an A agent mainly composed of isocyanate and a B agent mainly composed of an amine compound. This type of polyurea resin has various excellent properties such as waterproofness, durability, chemical resistance, and impact resistance. Also, polyurea resin has a short drying time of several seconds after mixing the materials, and has a quick drying property. Therefore, it is considered that there is a construction advantage in early release and shortening the construction period. In addition, polyurea resin has various advantages over conventional polyurethane foam and the like, such as being able to be applied to a ceiling or a wall. For these reasons, polyurea resins have been attracting particular attention in recent years.

  However, it is said that polyurea resin needs to be subjected to appropriate heating treatment on a plurality of materials, to adjust the flexibility of each material and to mix each material strongly. In addition, since a curing time after producing a polyurea resin by mixing a plurality of materials is extremely short, a few seconds, and because the resin exhibits extremely high drying properties, a system for constructing a polyurea resin has been conventionally used. In addition to a hose configured with a high-pressure line of 1 MPa or more, a gun for injection, a chemical supply device, a high-capacity compressor for driving these, a large power supply, etc. are required, and a great deal of energy is required It has been said that polyurea resin cannot be applied unless a dedicated coating system is used (see Patent Document 1 and Patent Document 2). In addition, a system for applying polyurea resin is also required to have a heating device for heating the polyurea resin raw material in order to uniformly mix the polyurea resin raw material.

JP-A-8-238453 JP-A-8-281198

  A conventional polyurea resin coating system requires a large-scale apparatus, and an operator has been required to perform highly complicated operations. For this reason, in order to ensure the skill of operating the coating apparatus, the worker has to attend a specialized workshop or the like to learn advanced handling methods. In addition, a plurality of workers need to operate in cooperation. For this reason, conventionally, the construction of the polyurea resin has been limited to the construction by a special specialist with high knowledge.

  In addition, since the raw materials for polyurea resin are provided in relatively large tanks, waste of expensive chemicals (raw solutions) can easily be generated in small-scale construction, especially in small-scale construction. In addition, the cost (equipment cost) for managing the coating apparatus is expensive in the construction for small-scale applications. Therefore, despite the various advantages of the polyurea resin, there has been a drawback in that the construction cost is high and it cannot be used easily in construction for small scale applications.

Therefore, in the present invention, a polyurea resin that can be used in a relatively simple manner without requiring a high degree of expertise and skill while being able to use a handy type simple construction device that does not require large-scale equipment. The purpose of this is to provide a construction method and a simple construction device therefor.
Another object of the present invention is to provide a polyurea resin construction method that is excellent in management and portability of construction equipment, and can be used inexpensively and easily for small-scale construction, and a simple construction equipment therefor.

  In order to achieve the above object, the present invention is a polyurea resin construction method in which two kinds of raw materials are mixed to construct a polyurea resin, and is cured to an agent A containing isocyanate as a main component in a cartridge type first storage container. A material obtained by adding a retarder and a pressurized gas generating agent is charged in a pressurized state, and a curing retarder and a pressurized gas generating agent are added to the B agent mainly containing an amine compound in a cartridge-type second storage container. The added material is loaded in a pressurized state, the first storage container and the second storage container are connected to a handy type spray gun, and the first storage container and the second storage container are connected to the spray gun. In this construction method, the materials contained in the container are supplied and mixed, and sprayed from the spray nozzle provided in the spray gun.

  The present invention relates to a polyurea resin construction method in which two kinds of raw materials are mixed to construct a polyurea resin, and a material in which a pressurized gas generating agent is added to an A agent mainly composed of isocyanate in a cartridge type first storage container. In a pressurized state, and in a pressurized state, a cartridge-type second storage container is loaded with a material obtained by adding a pressurized gas generating agent to B agent mainly composed of an amine compound, and the first storage container and A curing retarder is loaded into one of the second storage containers, the first storage container and the second storage container are connected to a handy-type spray gun, and the first storage container and In this construction method, the materials stored in the second storage container are supplied, mixed, and sprayed from an injection nozzle provided in the spray gun.

  In the present invention, the curing retarder is a construction method of a polyurea resin whose main component is methyl ethyl ketone.

  In the present invention, the pressurized gas generating agent is a construction method of a polyurea resin whose main component is dimethyl ether.

  The present invention includes a cartridge-type first storage container in which a material obtained by adding a curing retarder and a pressurized gas generating agent to an agent A containing isocyanate as a main component in a pressurized state, and an amine compound as a main component. Connected to a cartridge-type second storage container in which a material obtained by adding a curing retarder and a pressurized gas generating agent to B agent is loaded in a pressurized state, and a loading section for mounting the first storage container and the second storage container A handheld type spray gun, the spray gun including a first inflow passage connected to the first storage container, and a second inflow passage connected to the second storage container. A merging portion that communicates with the first inflow passage and the second inflow passage and mixes the material stored in the first storage container and the second storage container; and a first valve provided in the first inflow passage And a second valve provided in the second inflow passage, An injection nozzle for spraying a material obtained by mixing the materials stored in the first storage container and the second storage container through a recording junction; and a trigger for performing an operation of opening the first valve and the second valve. This is a portable polyurea resin construction apparatus.

  In the present invention, a cartridge type first storage container in which a material obtained by adding a pressurized gas generating agent to an A agent containing isocyanate as a main component in a pressurized state and a B agent containing an amine compound as a main component are added. For a cartridge type second storage container loaded with a material added with a pressurized gas generating agent in a pressurized state, and for a handy type spraying connected to a loading section for mounting the first storage container and the second storage container A gun, a curing retarder is loaded into one of the first storage container and the second storage container, and the spray gun has a first inflow passage connected to the first storage container, A merge that mixes the material stored in the first storage container and the second storage container through both the second inflow passage connected to the second storage container, the first inflow passage, and the second inflow passage. And a first portion provided in the first inflow passage. A valve, a second valve provided in the second inflow passage, an injection nozzle for spraying a material obtained by mixing the material stored in the first storage container and the second storage container via the junction, the first It is a portable polyurea resin construction apparatus having one valve and a trigger for performing an operation for opening the second valve.

  The present invention provides an opening operation portion for attaching the first storage container and the first storage container and performing an operation of opening a delivery port valve of the first storage container and a delivery port valve of the second storage container. A holding hose, a first hose connected to the delivery port of the first storage container and the first inflow passage, and a second connected to the delivery port of the second storage container and the second inflow passage. It is a portable polyurea resin construction apparatus provided with a hose.

  In the present invention, the holder includes a cartridge-type third storage container that is loaded with a medicine that generates compressed gas and has a delivery port with a valve, and the spray gun further includes the third storage container. It is a portable polyurea resin construction apparatus provided with the 3rd inflow path which is connected to the 3rd hose connected to a sending outlet, and leads to the said confluence | merging part.

  According to the present invention, the spray gun includes a static mixer that further mixes the material mixed at the junction, and the static mixer is installed in the gun body so as to be detachable and replaceable. Device.

  The present invention is the portable polyurea resin construction device in which the spray nozzle is detachably / replaceably attached to the tip of the static mixer.

  In the present invention, the curing retarder is a portable polyurea resin construction apparatus mainly composed of methyl ethyl ketone.

  In the present invention, the pressurized gas generating agent is a portable polyurea resin construction apparatus mainly composed of dimethyl ether.

  In the present invention, a plurality of cartridge type storage containers are prepared, and a curing retarder is added to the A agent and / or B agent of these storage containers to increase the solubility of the material, which is necessary for mixing and spraying the material. The use time was extended.

  For example, by storing a pressurized gas generating agent containing dimethyl ether as a main component in a storage container, the materials can be mixed only with the energy of the pressurized gas. Furthermore, mixing with a static mixer is possible.

  In addition, since the pressurized gas generating agent containing dimethyl ether as a main component is a liquid, this contributes to lowering the clay of the material in the storage container, so that the polyurea resin material is easily mixed.

  In the present invention, it is possible to use a handy-type simple construction device that does not require large-scale equipment, and it is also possible to use a polyurea resin construction method that can be easily constructed without requiring highly specialized skills, and the polyurea thereof. A resin construction apparatus can be provided.

  Moreover, according to the present invention, the polyurea resin construction apparatus is excellent in management and portability of the construction apparatus, and the polyurea resin construction method can be used inexpensively and easily for small-scale construction, and the construction of the polyurea resin. An apparatus can be provided.

It is explanatory drawing which shows each the spray can loading holder and the spray gun in the spray construction system of the polyurea resin which concerns on one Embodiment of this invention, respectively. It is sectional drawing which shows roughly the structure of the injection gun which concerns on the same embodiment. It is sectional drawing which shows roughly the structure of the holder for spray can loading which concerns on other embodiment of this invention. It is explanatory drawing which shows schematically the spray gun with the holder for spray can loading of the spray construction system of the polyurea resin which concerns on other embodiment of this invention. It is sectional drawing which shows the injection nozzle of the injection gun which concerns on another embodiment of this invention.

  With reference to FIG.1 and FIG.2, the spray construction system of the polyurea resin which concerns on one Embodiment of this invention is demonstrated. FIG. 1 shows a portable spray can loading holder 1 that can be carried by a single user, and a hand-type spray gun 2 that can be operated while being held by a single user. The polyurea resin can be simply applied simply by using an apparatus having the holder 1 for the hand and the gun 2 for the hand-type injection.

  The spray can loading holder 1 has a holder case main body 3, and in this embodiment, a plurality of spray cans 11, 12, 13, There is provided a loading section 4 capable of loading 14 in a detachable and replaceable manner. The loading unit 4 has a structure in which four spray cans 11, 12, 13, and 14 can be loaded in a state in which the heights of the heads are aligned and arranged in a line. The loading section 4 includes a holding means for holding means or locking means that can hold the can body portions of the spray cans 11, 12, 13, 14 in a fixed manner. Further, the structure of the loading unit 4 may be one that individually holds the spray cans 11, 12, 13, and 14 or one that holds the spray cans 11, 12, 13, and 14 together.

  As shown in FIG. 1, the holder case body 3 is provided with a handle 5 for use in transporting the entire holder 1 so as to protrude from the outer wall of the holder case body 3. The handle 5 is provided with a band mounting portion 6 having a hole for attaching a shoulder band (not shown). The user (operator) can carry the holder 1 by holding the handle 5 and can carry the holder 1, but can also carry the holder 1 by using a shoulder band and hanging the band on the shoulder. In particular, when a shoulder band is used, the hand-type injection gun 2 and the like can be easily operated with a free hand.

  In the holder case main body 3, an operation plate 16 is disposed substantially horizontally and located above the loading unit 4. The operation plate 16 is provided so as to be movable up and down with respect to the holder case body 3. The operation plate 16 is normally pushed upward as shown in FIG. 1 by elastic means such as a spring (not shown), and is higher than the heads of the spray cans 11, 12, 13, 14 loaded in the loading unit 4. Evacuated to position.

  The operation plate 16 is lowered by being pushed by a handle 17 screwed in a lifting direction with respect to a member on the holder case body 3 side. When the handle 17 is loosened, it returns to the original position above the head of each spray can 11, 12, 13, 14. The means for raising and lowering the operation plate 16 is not limited to the example of the screw-type handle described above, and a link mechanism such as a lever can be used, and the form of the mechanism for raising and lowering the operation plate is not limited. .

  On the other hand, each of the spray cans 11, 12, 13, and 14 has a can body 18 and a head 19 as a head that protrudes upward from the top of the can body 18. Is provided so that it can be pushed into the can body 18. Moreover, the head 19 has a delivery port with a valve, and when the head 19 is pushed down with respect to the can main body 18, the valve of the delivery port is opened. Therefore, as described above, when the operation plate 16 is lowered and the head 19 is pushed down with respect to the can main body 18, the valve at the outlet of each spray can opens. When the valve of the spray can outlet is opened, the contents of the spray cans 11, 12, 13, and 14 flow out through the outlet.

  The spray cans 11, 12, 13, and 14 are loaded into the loading unit 4 of the holder 1 so that the heads 19 have the same height. And at the time of standby, it is in the raised position as shown in FIG. In use, the operation plate 16 is lowered by operating the handle 17, and the operation plate 16 is maintained in this lowered position, so that the valve of the delivery port remains open, and each spray can 11, 12 is maintained. , 13 and 14 continue to be able to flow out through the outlet. That is, the operation plate 16 and the handle 17 of the holder 1 serve as operation means (open operation unit) for opening the outlets of the spray cans 11, 12, 13, and 14.

  As shown in FIG. 1, one end of a separate hose 21, 22, 23, 24 is detachably connected to the outlet of each spray can 11, 12, 13, 14. Each hose 21, 22, 23, 24 has flexibility and length that can be easily handled. The other end of each hose 21, 22, 23, 24 is led to a hand-type injection gun 2 described later, and is connected to the hand-type injection gun 2.

  Next, the hand-type injection gun 2 will be described. The gun 2 has a gun body 31 and a grip 32 attached to the gun body 31. A static mixer 33 that protrudes forward from the gun body 31 is detachably attached. The spray gun 2 is in the form of a hand that can be held and operated by a hand of an operator, but the spray gun 2 here has one hand that holds and holds the grip portion 32 with one hand. The gun 2 is operated with a finger so that the polyurea resin can be sprayed.

  As shown in FIG. 2, a plurality of inflow passages are formed in the gun body 31, and the other ends of the above-described hoses 21, 22, 23, and 24 are separately connected to the inflow ends of these inflow passages. Yes. These inflow passages include a first inflow passage 41 to which the first hose 21 is connected, a second inflow passage 42 to which the second hose 22 is connected, and a third inflow passage 43 to which the third hose 23 is connected. And a fourth inflow passage (not shown) to which one end of the fourth hose 24 is connected. The gun body 31 is provided with a merge portion (cavity) 35 where the first to third inflow passages 41 to 43 merge. The static mixer 33 is connected to the gun body 31 so as to be continuous with the junction 35.

  As shown in FIG. 2, the first inflow passage 41 and the second inflow passage 42 are inclined obliquely from the left and right rear to the center of the merge portion 35 with respect to the extension line of the central axis of the static mixer 33 (shown in FIG. 1). Each of the third inflow passages 43 is provided on the extension line of the central axis of the static mixer 33 so as to open from just behind the merging portion 35 toward the center of the merging portion 35. It has been. That is, the first inflow passage 41 and the second inflow passage 42 open toward the center of the confluence portion 35 in the left and right rear obliquely symmetrical left and right in the confluence portion 35 connected to the static mixer 33, and the third inflow passage 43 is the confluence portion. An opening is formed from directly behind 35 toward the center of the merge portion 35. Therefore, the fluid flowing from the third inflow passage 43 into the merge portion 35 is mixed with the fluid flowing from the first inflow passage 41 and the second inflow passage 42 into the merge portion 35 equally to the static mixer 33 on the left and right. It acts to send in fluid.

  As shown in FIG. 2, the first inflow passage 41 and the second inflow passage 42 are provided with valves 51 and 52 that are positioned before the flow to the junction 35 is obtained and open and close. These valves 51 and 52 are opened and closed by a (main) trigger 55 provided at a position where it can be operated by a finger of a hand holding the holding portion 32 (shown in FIG. 1). Here, the cooperative operation is performed so that the first valve 51 and the second valve 52 are opened simultaneously by operating one trigger 55.

  The third inflow passage 43 to which the third hose 23 is connected is also provided with a valve (not shown) that opens and closes the passage, and is provided at a position where it can be operated with a finger of a hand that grips the grip portion 32. The valve may be opened and closed by a trigger (an example is indicated by an imaginary line in FIG. 1) 56. In this case, the fluid supplied by the third hose 23 can be selectively supplied to the merging portion 35.

  Further, a fourth inflow passage (not shown) to which one end of the fourth hose 24 is connected is formed in a state of penetrating the gun main body 31 independently without passing through the above-described merging portion 35 or valve. . A flexible fifth hose 25 (shown in FIG. 3) is detachably connected to the outflow end of the fourth inflow passage. The fifth hose 25 extends along the static mixer 33 and is connected to the tip of the static mixer 33 located in front of the spray nozzle 57 provided at the tip of the static mixer 33.

  Next, the static mixer 33 (shown in FIG. 1) will be described. As shown in FIG. 2, the static mixer 33 is configured by arranging a plurality of mixing elements 46 in a line in the longitudinal direction of the pipe body 45 inside the pipe body 45. Each mixing element 46 includes, for example, a rectangular plate-like member as shown in FIG. 5 described later, and the plate-like member is formed in a shape twisted by 180 ° as it proceeds in the longitudinal direction of the tube main body 45. Then, adjacent mixing elements 46 are arranged in a row so that their adjacent end faces are orthogonal to each other. At this time, the twisting direction of the adjacent mixing elements 46 is reversed. In other words, the mixing elements 46 whose twisting directions are alternately arranged are arranged in a line in the longitudinal direction of the tube main body 45. Further, the outer periphery of the mixing element 46 viewed from the axial direction of the tube main body 45 is disposed in the tube main body 45 so as to be in close contact with the inner peripheral surface of the tube main body 45. Therefore, since the outer periphery of each mixing element 46 is densely disposed so as to contact the inner peripheral surface of the pipe body 45, the material that moves in the axial direction of the pipe body 45 is less likely to leak into the circumferential direction of the mixing element 46. The material is moved and mixed in the axial direction efficiently. Further, the material proceeding in the longitudinal direction of the tube main body 45 is twisted 180 ° when passing through one mixing element 46 and divided into two by the next mixing element 46, and they are twisted 180 ° in the opposite direction by the mixing element 46. This is repeated to promote mixing.

  As shown in FIG. 2, an inflow region 47 is formed at the tip of the tube body 45 of the static mixer 33. A connection port portion 48 formed so as to communicate with the inflow region 47 is provided at the front end portion of the tube main body 45 located in front of the inflow region 47 (see FIG. 1). The front end of the fifth hose 25 described above is detachably connected to the connection port 48. Accordingly, the fluid such as gas supplied through the fourth hose 24 flows from the fourth hose 24 to the fifth hose 25 through the fourth inflow passage 44 (not shown) of the gun body 31, and from the fifth hose 25. It is supplied into the inflow region 47 of the pipe body 45 through the connection port 48.

  On the other hand, as shown in FIG. 1, manual open / close cocks 27 and 28 are provided in the middle of the third hose 23 and the fourth hose 24, respectively. By opening and closing these cocks 27 and 28, fluid supply or shut-off through the third hose 23 or the fourth hose 24 can be selectively performed.

  In addition, since the opening / closing cock 27 is also provided in the middle of the third hose 23, the operation of supplying or shutting off the fluid through the third hose 23 can be selected by the opening / closing cock 27. The third valve may not be provided in the 3 inflow passage 43. Further, the opening and closing cocks 27 and 28 of the third hose 23 and the fourth hose 24 are omitted, and the third valve provided in the third inflow passage 43 is omitted, and the fluid supply through the third hose 23 or the fourth hose 24 is performed. It may be one that is always continued during use.

  An injection nozzle 57 is detachably attached to the tip of the tube main body 45 of the static mixer 33. The injection nozzle 57 is formed by a nozzle tip 58 screwed into the tip of the tube body 45 as shown in FIG. A nozzle hole 59 is formed in the nozzle tip 58. The inflow region 47 may be formed in the nozzle tip 58 member.

  The injection nozzle 57 can be attached to and detached from the tube main body 45 of the static mixer 33. For this reason, according to raw materials, such as a chemical | medical agent to be used, the nozzle 57 for injection suitable for it can be selected freely, and after using the nozzle for injection 57, it can also be set as what is called a disposable system replaced with another new nozzle for injection 57 it can.

  Next, raw materials, chemicals and the like to be loaded in the spray cans 11, 12, 13, and 14 used for construction of the polyurea resin will be described.

  First, the first spray can 11 includes a raw material mainly composed of isocyanate as an A agent of polyurea resin, methyl ethyl ketone (MEK) as a curing retarder, and a pressurized gas generator (injection) that can contribute to viscosity reduction. Dimethyl ether (DME), which is a liquefied gas as an agent, is filled in a pressurized state. Dimethyl ether (DME) is a liquid in the spray can and, therefore, its filling capacity can be reduced, which is preferable in using the spray can.

  The second spray can 12 includes a raw material mainly composed of an amine compound as a curing agent, which is another raw material of the polyurea resin, methyl ethyl ketone (MEK) as a curing retarder, and an additive that can contribute to viscosity reduction. It is filled with dimethyl ether (DME), which is a liquefied gas as a pressurized gas generating agent (propellant), in a pressurized state. Dimethyl ether (DME) is a liquid in a spray can, and the filling capacity of the spray can can be reduced. Therefore, it is suitable for using a spray can.

The third spray can 13 and the fourth spray can 14 are filled with liquefied helium He or carbon dioxide gas CO ₂ .

  And the spray cans 11 and 12 open the delivery port, and the raw material etc. which were accommodated are sent out from a delivery port by internal pressure. Moreover, the spray cans 13 and 14 send out the pressurized gas in the inside by opening the delivery port.

  Here, the spray cans 11 and 12 are filled with a liquefied gas such as dimethyl ether (DME) in order to eject the raw material of the polyurea resin, but another liquefied gas or a high-pressure gas may be filled. Moreover, you may put liquefied gas, such as a dimethyl ether (DME), into both the spray can 13 or the spray can 14, or one of them. In particular, dimethyl ether (DME) is a liquid in a spray can, and its filling capacity can be reduced. Therefore, it is suitable for using a compact cartridge type storage container such as a spray can. Methyl ethyl ketone (MEK) as a curing retarder may also be put in one of the spray cans 11 and 12.

  Further, different types of pressurized gas generating agents may be loaded depending on the relationship between the spray cans 11 and 12 containing raw materials for the polyurea resin or the relationship between the spray cans 11 and 12 and the other spray cans 13 and 14. Good.

  Next, a method for constructing a polyurea resin using the construction apparatus described above will be specifically described.

  First, four spray cans 11, 12, 13, 14 prepared in advance are respectively mounted on the loading unit 4 of the spray can loading holder 1. At this time, as shown in FIG. 1, the heads 19 of the spray cans 11, 12, 13, and 14 are arranged at the same height, and the operation plate 16 is positioned horizontally above the head 19 to stand by. To do.

  Next, one end of the hose 21, 22, 23, 24 corresponding to the head 19 of each spray can 11, 12, 13, 14 is connected. The other ends of the first to fourth hoses 21, 22, 23, 24 are connected to the inflow ends of the first to fourth inflow passages 41 to 43 of the hand-type injection gun 2 corresponding thereto. Further, the fifth hose 25 is connected to the other end of the fourth inflow passage and the connection port 48 of the static mixer 33 in the hand-type injection gun 2. The hoses 21, 22, 23, and 24 for the spray cans 11, 12, 13, and 14 may be connected in advance to the spray cans 11, 12, 13, and 14 before being loaded into the holder 1.

  Thereby, the preparation for construction of the polyurea resin is completed. At this time, the cocks 27 and 28 of the hoses 23 and 24 and the valves 51 and 52 of the inflow passages 41 and 42 are all closed.

  Therefore, the worker carries the holder 1 with the shoulder band on his shoulder, and holds the hand-type spray gun 2 in his hand to move to the work area. Then, after confirming the work object, the cocks 27 and 28 of the third hose 23 and the fourth hose 24 are opened. Thereby, the pressurized gas of the third spray can 13 and the fourth spray can 14 flows into the third inflow passage 43 and the fourth inflow passage through the third hose 23 and the fourth hose 24. The pressurized gas flowing into the third inflow passage 43 is discharged outside through the static mixer 33 and the nozzle hole 58 of the spray nozzle 57. Further, the pressurized gas that has flowed into the fourth inflow passage is discharged outside from the nozzle hole 58 of the spray nozzle 57 through the inflow region 47 at the tip of the static mixer 33. The supply of these pressurized gases promotes mixing and flow of the raw material of the polyurea resin, or acts to improve liquid breakage at the nozzle hole 58. However, the polyurea resin can be sprayed without particularly supplying this pressurized gas. Alternatively, the pressurized gas may be supplied using only one of the third hose 23 and the fourth hose 24.

  When spraying the polyurea resin, the (main) trigger 55 is operated with a finger in a posture in which the spray nozzle 57 is directed to the construction target. Then, the valve 51 of the first inflow passage 41 and the valve 52 of the second inflow passage 42 are simultaneously opened, and each raw material of the polyurea resin from the spray cans 11 and 12 passes through the first inflow passage 41 and the second inflow passage 42 and joins the joining portion 35. The raw materials are mixed with each other. Moreover, since each raw material of the polyurea resin supplied from the spray cans 11 and 12 flows in so as to intersect the junction 35, they are mixed while colliding with each other. The mixed raw material is sent to the static mixer 33, where the mixing proceeds further uniformly in the static mixer 33, and is sprayed from the spray nozzle 57 onto the surface to be worked through the inflow region 47.

  In general, the polyurea resin has a characteristic that it quickly cures when two kinds of raw materials are mixed, but in this embodiment, each raw material can be loaded into separate spray cans 11 and 12 and can contribute to a decrease in viscosity of each raw material. Since methyl ethyl ketone (MEK) is blended, the reaction delaying effect delays the curing even if the raw materials of the polyurea resin are mixed, so that the pot life until curing is increased. In addition, the fluidity of the raw materials is increased even at a room temperature of about 20 ° C., and the respective raw materials can be mixed uniformly, so there is no need to actively warm the raw materials before mixing them. Therefore, the construction of the polyurea resin can be realized only by using a simple raw material supply means using a spray can and a hand-type relatively simple injection gun 2.

  As described above, conventionally, a high pressure air is generated by a compressor of a dedicated system, and two kinds of chemicals of polyurea resin are quickly mixed and diffused into a fine particle state, which corresponds to an instantaneous curing phenomenon of polyurea resin. As described above, a large dedicated system for generating a great amount of energy such as a compressor, a power source, and a heater is required.

  However, in this construction system, it is only necessary to use a simple supply means using a spray can and a hand-type relatively simple injection gun 2, and no large-scale apparatus is required. Moreover, mixing and spraying are possible only with the transfer force of the material released from the spray cans 11 and 12.

  Here, in particular, the liquid feeding action is enhanced by the pressure of the fluid through the third hose 23 or the fourth hose 24, and therefore, even better mixing and a uniform spray state can be secured. First, since the fluid passing through the third hose 23 is supplied to the merging portion 35 through the third inflow passage 43, mixing is promoted in the merging portion 35, and the material mixed here is promptly sent to the static mixer 33. Can do. Further, the fluid through the fourth hose 23 is supplied to the inflow region 47 located at the tip of the static mixer 33 through the fourth inflow passage and the fifth hose 25 and is discharged from the injection nozzle 57, and this flow causes the static mixer to flow. The raw material passing through 33 is sucked, the flow of the raw material in the static mixer 33 is promoted, and the raw material is quickly discharged from the injection nozzle 57.

  Therefore, the raw material of the polyurea resin that is easy to cure is quickly and uniformly mixed, and the spray from the spray nozzle 57 is made good. In addition, it is possible to suppress as much as possible a phenomenon such as solidification of the raw material of the polyurea resin in the middle, dripping of the liquid at the tip of the injection nozzle 57, and release thereof.

  In addition, since the two kinds of materials of polyurea resin can be sufficiently mixed with the mixing element 46 through the static mixer 33 without being sprayed immediately after flowing into the merging portion 35, the materials can be mixed evenly. As a result, it can be sprayed well.

  Moreover, the 1st spray can 11 and / or the 2nd spray can 12 are mix | blended with methyl ethyl ketone (MEK) and the dimethyl ether (DME) which can contribute to a viscosity fall. Methyl ethyl ketone (MEK) extends the pot life. Since dimethyl ether (DME) facilitates mixing of the drugs while being liquid in the can, the synergistic effect of these makes it possible to use the spray can sufficiently and more.

  As described above, in the present invention, two kinds of raw materials of polyurea resin can be loaded into a cartridge-type storage container such as a spray can and provided to the market and used. In addition, the raw material stored in the storage container is extruded and supplied by the gas pressure of the liquefied gas stored in the storage container, and the material stored in the storage container can be sprayed while being mixed with a handy type gun.

  Further, in the present invention, since the highly soluble methyl ethyl ketone (MEK) is blended in advance in the storage container, the time for starting the curing after mixing the raw materials is delayed, so that a sufficient mixing time can be secured. become. Therefore, it is not necessary to apply a large amount of energy with a large-scale dedicated device as in the prior art, and even a handy type gun can be sprayed while mixing. In addition, since a time for mixing the raw materials discharged from the spray can with the gas pressure is obtained, the mixing of two types of polyurea resin raw materials using a static mixer is sufficiently possible.

  Further, in the present invention, a cartridge type storage container such as a spray can can be used to store the two raw materials of the polyurea resin, so that it is easy to handle for general people and can be provided through various sales routes. This is possible and the versatility is greatly improved. In particular, a large-scale device is unnecessary, and management costs (equipment costs) can be reduced. Moreover, since the remaining amount of the raw material can be reduced even in small-scale construction, there is no waste of expensive polyurea resin raw material, and the construction cost of the high-performance polyurea resin is reduced. Furthermore, it is not necessary to have a high level of skill to operate a conventional large-scale apparatus, and the need for a large number of workers to work together is reduced. Therefore, since a high-performance polyurea resin can be easily constructed, the versatility of construction of a useful polyurea resin can be enhanced.

Experimental example

(1) The following materials were used for the A agent mainly composed of isocyanate and the B agent mainly composed of an amine compound as a raw material of the polyurea resin.
Product name: Nukote Poyuiea ST (Side A and Side B)
Manufacturer: NUKOTE COATING SISTEHS INTERNATION
Distributor: Kanamori Tohei Shoji Co., Ltd. Also, dimethyl ether (DME) and methyl ethyl ketone (MEK) were used under the trade names. Specifically, dimethyl ether was produced by Koike Chemical Co., Ltd. (Konosu City, Saitama Prefecture) under the trade name dimethyl ether, and methyl ethyl ketone was produced by Yamaichi Chemical Co., Ltd. (Taito-ku, Tokyo) under the trade name methyl ethyl ketone. It is.

(2) The mixing ratio (volume ratio) of dimethyl ether (DME) and methyl ethyl ketone (MEK) to agent A or agent B is agent A or agent B: DME: MEK = 7: 3: 10, and the respective capacities (mill liters) (Ml)) 70 ml: 30 ml: 100 ml of spray cans of a total of 200 ml filled with each of the A agent spray can and B agent spray cans were mixed in equal amounts with a spray gun. .
In addition, MEK blending volume ratios of 20%, 25%, and 40% with respect to agent A or agent B were prepared. Furthermore, only MEK was blended with the A agent or B agent, and the blending volume ratios were 20%, 25%, and 40%.

(3) Spray Gun Static Mixer 33 The inner diameter of the tube body 45 is 4.8 mm, the entire length of the tube body 45 is 165 mm, the length of each mixing element 46 is 5 mm, and the number of mixing elements 46 is 32 stages.

(4) Result of experiment Although all the prepared samples were experimented at room temperature in the field, polyurea resin could be sprayed on all the samples. In particular, spraying of polyurea resin was performed well even when the blending volume ratio of MEK to A agent or B agent containing dimethyl ether (DME) was 20%, 25%, and 40%. This is thought to be because the pressurized gas generating agent mainly composed of dimethyl ether is a liquid, and thus contributes to a decrease in the viscosity of the material in the storage container, thereby facilitating mixing of the materials. Of course, it is considered that when the mixing degree of the material is relatively low and less than 20%, it can be dealt with by increasing the number of mixing elements 46 or increasing dimethyl ether (DME).

  In addition, when the mixing volume ratio of MEK to Agent A or Agent B exceeds 40%, when spraying on a wall or the like, it is expected to cause dripping on the sprayed wall surface, but the direction of spraying with a gun is swung. It can be handled by repeating operations such as thin and uniform spraying. When the dilution ratio of MEK with respect to A agent or B agent exceeds 40%, the coating film per unit time becomes thin, but even if there is a difference in strength, etc., it is sufficient for repairs and cannot be used. Not a thing.

  By the way, when the fourth hose 23 was used and air was supplied, the spraying force from the injection nozzle 57 increased, and the dripping from the injection nozzle 57 decreased. When the fourth hose 24 and the fifth hose 25 are used and air is fed from the front of the injection nozzle 57 at the tip of the static mixer 33, dripping from the injection nozzle 57 is reduced, and a good spray of polyurea resin is performed. It was broken.

  In the above-described embodiment, the portable polyurea resin construction device has the portable spray can loading holder 1 and the hand spray gun 2 as separate bodies. It is good also as a portable polyurea resin construction apparatus of the integral structure which assembled | attached the gun 2 for injection. FIG. 3 shows an example of a portable polyurea resin construction apparatus.

  In this type of polyurea resin construction apparatus, a first loading unit 61 for loading the first spray can 11 and a second loading unit 62 for loading the second spray can 12 are provided on the left and right sides of the grip 32. The loading unit 61 and the loading unit 62 are assembled to the gun body 31. In addition, the first loading unit 61 and the second loading unit 62 are arranged on the left and right, leaving an area where the gripping unit 32 can be grasped by hand. The basic configuration of the polyurea resin construction apparatus is the same as that of the above-described embodiment, and can be used in the same manner.

  In this embodiment, the 4th spray can 14 and the 4th hose 24 connected to this are not provided. Further, in this embodiment, the third inflow passage 43 is branched (if the third valve is provided, it is branched from the front passage portion or the subsequent passage portion), and the fifth hose 25 described above with respect to this branched passage. Was connected. Further, the spray can connected to the third hose 23 is loaded in a portable spray can loading holder (not shown). The usage and operation of this are the same as described above.

  FIG. 4 shows another type of portable spray can loading holder 71. The holder 71 is provided with a stepping type operation plate 16 so that the operation plate 16 can be lifted and lowered by a stepping type. By stepping on the operation plate 16 with the foot, the operation plate 16 is lowered, and the operation plate 16 pushes the heads 19 of the spray cans 11, 12, 13, and 14 simultaneously. The operation plate 16 stops at the position where the pushing operation is performed, and the heads 19 of the spray cans 11, 12, 13 and 14 are held at the pushing position. When the operation plate 16 is stepped on again, the maintenance of the operation plate 16 is released, and the operation plate 16 rises and returns to the original position. In this embodiment, the handle 5 and the shoulder band in the above-described embodiment are not provided, but they may be provided together.

  FIG. 5 shows another form of the injection nozzle. The jet nozzle 81 of this form has a nozzle tip 84 having a female screw portion 83 that is screwed into a male screw portion 82 formed at the tip of the tube body 45 in the static mixer 33. Thereby, the nozzle 81 for injection can be attached to and detached from the tip of the tube main body 45 and exchanged.

  In this embodiment, unlike the embodiment shown in FIGS. 1 and 2, the inflow region 47 is not formed at the distal end portion of the pipe body 45 in the static mixer 33, but the member that forms the nozzle tip 84 is the first. An inflow region 85 for a fluid such as a gas supplied through the five hose 25 is formed.

  The nozzle tip 84 is formed with a nozzle hole 86 disposed on an extension of the longitudinal central axis of the static mixer 33. Around the nozzle hole 86, an introduction hole 87 is formed as a cavity formed concentrically with respect to the central axis of the nozzle hole 86. The nozzle tip 84 formed with the introduction hole 87 is provided with a connection port portion 88 for detachably connecting the fifth hose 25 described above. The connection port 88 is connected to the inflow region 85. The leading end of the introduction hole 87 joins at the tip of the nozzle hole 86, and the leading end of the introduction hole 87 opens toward the center of the nozzle hole 86 so as to join the nozzle hole 86 obliquely from the rear of the nozzle hole 86. By doing so, the intersecting region forms a confluence 89. The material of the polyurea resin mixed in the static mixer 33 is drawn by the gas supplied to the joining portion 89 through the fifth hose 25 and is discharged from the tip of the nozzle hole 86 in a spray form.

  Further, the static mixer 33 may be a spiral mixer in which the mixing element is continuous in one direction over a part or the entire installation area of the pipe body.

  In the above description, the example of methyl ethyl ketone (MEK) is described as the curing retarder. However, the present invention may be an organic solvent other than methyl ethyl ketone, such as acetone. And even if it is a case where hardening retarders other than this methyl ethyl ketone are employ | adopted, it is thought that the usable time delay effect according to the dissolving power can be anticipated.

  Further, the present invention can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. Furthermore, various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the embodiment. For example, you may delete some components from all the components shown by each embodiment mentioned above. Further, the constituent elements in different embodiments may be combined.

  The present invention includes, for example, real estate such as bridges, buildings, plant equipment, ships, waterways, dams, work tools, etc., as well as movable goods such as various kinds of articles, etc. It becomes.

DESCRIPTION OF SYMBOLS 1 ... Spray can loading holder 2 ... Hand type injection gun 11 ... Spray can 12 ... Spray can 16 ... Operation plate 31 ... Gun body part 32 ... Grasping part 33 ... Static mixer 35 ... Merge part 41 ... Inflow passage 42 ... Inflow Passage 55 ... (Main) Trigger 57 ... Nozzle for injection

Claims (12)

In the construction method of polyurea resin in which two kinds of raw materials are mixed to construct polyurea resin,
In a cartridge type first storage container, a material obtained by adding a curing retarder and a pressurized gas generating agent to the A agent mainly composed of isocyanate is loaded in a pressurized state.
A cartridge-type second storage container is charged with a material obtained by adding a curing retarder and a pressurized gas generating agent to a B agent mainly composed of an amine compound,
The first storage container and the second storage container are connected to a handy type gun for spraying, and the spray gun receives the supply of materials stored in the first storage container and the second storage container. And a polyurea resin construction method for spraying from a spray nozzle provided in the spray gun. In the construction method of polyurea resin in which two kinds of raw materials are mixed to construct polyurea resin,
A cartridge type first storage container is charged with a material in which a pressurized gas generating agent is added to an A agent mainly composed of isocyanate under pressure,
In a cartridge type second storage container, a material obtained by adding a pressurized gas generating agent to a B agent mainly composed of an amine compound is loaded in a pressurized state.
One of the first storage container and the second storage container is loaded with a curing retarder,
The first storage container and the second storage container are connected to a handy type gun for spraying, and the spray gun receives the supply of materials stored in the first storage container and the second storage container. And a polyurea resin construction method for spraying from a spray nozzle provided in the spray gun.   The construction method of the polyurea resin according to any one of claims 1 to 2, wherein the curing retardant is mainly composed of methyl ethyl ketone.   The construction method of the polyurea resin according to claim 1, wherein the pressurized gas generating agent is mainly composed of dimethyl ether. A first container of a cartridge type in which a material obtained by adding a curing retarder and a pressurized gas generating agent to an A agent mainly composed of isocyanate is loaded in a pressurized state;
A cartridge-type second storage container in which a material obtained by adding a curing retarder and a pressurized gas generating agent to the B agent mainly composed of an amine compound is loaded in a pressurized state;
A handy type gun for spraying connected to a loading section for mounting the first storage container and the second storage container;
With
The spray gun is
A first inflow passage connected to the first storage container;
A second inflow passage connected to the second storage container;
A merging portion that communicates with the first inflow passage and the second inflow passage and mixes the material stored in the first storage container and the second storage container;
A first valve provided in the first inflow passage;
A second valve provided in the second inflow passage;
An injection nozzle for spraying a material obtained by mixing the materials stored in the first storage container and the second storage container through the junction part;
A trigger for performing an operation of opening the first valve and the second valve;
A portable polyurea resin construction device. A cartridge-type first storage container in which a material obtained by adding a pressurized gas generating agent to an A-agent mainly composed of isocyanate in a pressurized state;
A cartridge-type second storage container in which a material obtained by adding a pressurized gas generating agent to B agent mainly composed of an amine compound is loaded in a pressurized state;
A handy type gun for spraying connected to a loading section for mounting the first storage container and the second storage container;
A curing retarder is loaded into one of the first storage container and the second storage container,
The spray gun is
A first inflow passage connected to the first storage container;
A second inflow passage connected to the second storage container;
A merging portion that communicates with both the first inflow passage and the second inflow passage, and mixes the materials stored in the first storage container and the second storage container;
A first valve provided in the first inflow passage;
A second valve provided in the second inflow passage;
An injection nozzle for spraying a material obtained by mixing the materials stored in the first storage container and the second storage container through the junction part;
A trigger for performing an operation of opening the first valve and the second valve;
A portable polyurea resin construction device. A holder having an opening operation section for attaching the first storage container and the first storage container and performing an operation of opening a delivery port valve of the first storage container and a delivery port valve of the second storage container; ,
A first hose connected to the outlet of the first storage container and the first inflow passage;
A second hose connected to the outlet of the second storage container and the second inflow passage;
The portable polyurea resin construction apparatus of Claim 5 or Claim 6 provided with these. The holder includes a third container of a cartridge type that is loaded with a medicine that generates compressed gas and has a delivery port with a valve.
The portable polyurea according to claim 7, further comprising a third inflow passage connected to a third hose connected to a delivery port of the third storage container and connected to the junction. Resin construction equipment.   The spray gun includes a static mixer that further mixes the material mixed at the junction, and the static mixer is detachably attached to the gun body. The portable polyurea resin construction apparatus of Claim 7 or Claim 8.   The portable polyurea resin construction device according to claim 9, wherein the spray nozzle is detachably / replaceably attached to a tip of the static mixer.   The portable polyurea resin construction apparatus according to any one of claims 5 to 10, wherein the curing retarder is mainly composed of methyl ethyl ketone.   The portable polyurea resin construction apparatus according to any one of claims 5 to 10, wherein the pressurized gas generating agent is mainly composed of dimethyl ether.

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