JP2006098182A - Inspection method and inspection tool of execution sealant - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inspection method finding an adhesion failure spot or a hardening failure spot of a sealant hardened on a sealing spot by using a simple inspection tool easily without differences among users, and also to provide a simple inspection tool used therefor. <P>SOLUTION: This inspection method of an execution sealant is characterized by finding an adhesion failure spot of the sealant onto an adhering object or a hardening failure spot thereof by pressing the tip part of a pressing rod of a portable load cell with a prescribed load onto the sealant hardened on the sealing spot. This inspection tool of the adhesion state onto the adhering object of the sealant hardened on the sealing spot or the hardened state thereof is characterized by being the portable load cell with the pressing rod. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

The present invention relates to a sealant cured at a sealing work site, that is, a method for inspecting a construction sealant, and an inspection tool for the sealant.

Filling joints and gaps between members of buildings and civil engineering structures, cracked parts of buildings and civil engineering structures, etc. are filled with amorphous sealant or caulking material (also referred to as “sealant” in the present invention) and cured or solidified ( In the present invention, it is sealed or coked (also referred to as “sealing” in the present invention) by being collectively “cured”. If such a sealant is well cured and not well adhered to the adherend, it will cause water leakage and intrusion of outside air. Therefore, after the sealing work, the sealant hardened at the sealing work location, that is, by pressing the finger against the construction sealant or pressing the bamboo spatula by hand, the sealant peeling part from the adherend or the poor sealant hardening point is found. Inspected (see FIG. 15 of Non-Patent Document 1 and Patent Document 1).

However, the shape and size of the fingers and bamboo spatula used for the inspection vary, and the pressing load of the fingers and bamboo spatula varies depending on the worker, and even the same inspector varies depending on the time and sometimes the inspection result. There is a problem in that unevenness of adhesion is difficult to occur, and an adhesion failure place or a hardening failure place is overlooked. In some cases, the cured sealant or adherend may be damaged by excessive pressing load or use of improper inspection tools. In such an inspection method that relies on the human sense and experience, there is a limit even if a skilled inspector goes carefully, and there are cases where a skilled inspector cannot be mobilized. Therefore, for example, an inspection method and an inspection apparatus for determining an adhesion state by applying an ultrasonic wave to an adhesion site of a structural sealant and measuring a reflected wave are proposed (see Patent Document 1), but are not skilled. It is not easy for the inspector to judge the adhesion state and the peeling state from the waveform of the reflected wave at the construction site, and the apparatus becomes somewhat large and unsuitable for inspection of the sealing work site of the building or civil engineering structure.

"Sealing materials for construction-basics and correct usage" (Nippon Sealing Industry Association, November 15, 1993, pp. 236-237, 292-293) JP-A-5-10929

Accordingly, as a result of intensive studies to develop a simple inspection method and a simple inspection tool free from such problems, the present inventors have devised the inspection method and inspection tool of the present invention.
The object of the present invention is to find a location where adhesion of a sealant cured at a sealing work location to an adherend or a location where a sealant is poorly cured is easy and reproducible using simple tools without individual differences. An object of the present invention is to provide a possible inspection method and a simple inspection tool therefor.

[1] By pressing the tip of the pressure rod of a portable load cell with a pressure rod against the sealant cured at the sealing work site under a predetermined load, the sealant adheres poorly to the adherend or the sealant does not cure properly. A method for inspecting an adhesion state of a sealant to an adherend or a cured state of the sealant, characterized by finding a location.
[2] The predetermined load is such that the sealant is peeled off from the adherend at a place where the sealant is poorly bonded to the adherend, but the sealant is a load at which the sealant is not peeled off or damaged at a place where the adhesion is good. 1] The inspection method as described.
[3] The inspection method according to [1], wherein the predetermined load is such a load that the sealant is depressed at a poorly cured portion of the sealant but the sealant is not depressed at a well cured portion.
[4] A specified load was created under the same conditions as the sealing conditions at the sealing work site (however, the sealant cured normally and adhered completely to the adherend). The tip of the pressing rod of the mold load meter is pressed against the adherend, or the load is less than the minimum load value obtained by measuring the load value to be damaged, [2] or [3] The inspection method described in the above.
[5] The inspection method according to [4], wherein the predetermined load is 30% to 95% of the minimum load value.
[6] An inspection tool for bonding or hardening a sealant cured at a sealing work site to an adherend, which is a portable load cell with a pressing rod.
[7] The inspection tool according to [6], wherein the portable load cell has a load scale plate or a digital display of the load.
[8] The inspection tool according to [6] or [7], wherein the tip end of the pressing rod has a substantially hemispherical shape, a substantially semicircular shape in a lateral direction, or a prismatic shape having no sharp corners.
[9] The inspection tool according to any one of [6] to [8], wherein the material of the tip of the pressing rod is bamboo, wood, or synthetic resin.

According to the inspection method of the present invention, since it is possible to inspect while recognizing the load value at the time of pressing, it is easy and easy to identify the poorly bonded part of the sealant cured at the sealing work part and the poorly cured part of the sealant. Reproducible and can be found without individual differences. Even an unskilled inspector, that is, an amateur inspector, can find it easily and with good reproducibility. It seems that the sealant appears to be filled normally in the joints, but there are also places where the interior is underfilled.
At the time of inspection, it is possible to minimize the peeling caused by excessively suppressing the normally adhered sealing portion with a finger or a spatula, or the damage caused by excessively suppressing the normally cured sealant with a finger or a spatula.
In particular, the portable load cell with a pressure bar is applied to the cured sealant of the test specimen prepared under the same conditions as the sealing conditions at the sealing work site (however, the sealant is normally cured and completely adhered to the adherend). If you select a load value that is smaller than the minimum load value obtained by pressing the tip of the pressure rod and peeling off the sealant from the adherend or measuring the load value that damages the sealant, Locations where adhesion to the body and poor curing of the sealant can be found more easily and reproducibly without individual differences, and a complete nondestructive inspection becomes possible.

Since the inspection tool of the present invention comprises a portable load cell body and a pressing rod, it can be carried with one hand and the load value at the time of pressing can be easily recognized. Therefore, it is possible to easily and reproducibly find the location where the sealant cured at the sealing work location is not adhered to the adherend or the location where the sealant is hardened without individual differences. In addition, it is possible to minimize the peeling of the normally bonded sealing portion and the damage during the inspection of the normally cured sealant.

The sealing work location in the present invention is not particularly limited as long as it is a location that requires sealing, such as joints and gaps between various members, and cracks in various members. The places that require such sealing are buildings, apartments, gymnasiums, halls, apartments, detached houses, factories, greenhouses, huts, temporary buildings, etc., especially the outer walls, glass walls, windows and sashes of these buildings. , Roofs, bathrooms; arcades, garages, balconies, sound deadening walls, and other structures; civil engineering structures such as roads, runways, dams, irrigation canals, tunnels, underpasses, gutters; large tanks, pools, artificial ponds, water tanks Many are found in the dam. The material to be adhered to the sealant is not particularly limited in terms of material. Metal such as aluminum, anodized, duralumin, steel, stainless steel; painted metal; glass, tile, ceramic, stone, brick, concrete, mortar, etc. Examples of ceramic products: wood, plywood: plastics such as thermosetting resins and thermoplastic resins. The shape of the member to be the adherend is not particularly limited, and examples thereof include a plate shape, a prismatic shape, a round bar shape, and a block shape.

The sealant used in the present invention may be an irregular sealant, that is, an irregular shape such as a liquid or a paste when stored in a container, and may be any one that cures to become an elastomer or a solid. The packaging form may be either one liquid type or two liquid type. The material may be any of silicone sealant, silane-modified polyether sealant, polyisobutylene sealant, polysulfide sealant, polyurethane sealant, acrylic caulking material, oil caulking material, etc., and the curing / solidification mechanism is moisture curing type, condensation reaction curing type, Any of an addition reaction curing type, a solidified type accompanying solvent or water volatilization, and the like may be used. One-component sealants are usually stored sealed in cylindrical cartridges or plastic tubes, and two-component sealants are usually stored in metal cans or plastic containers, and hardeners are usually stored in glass bottles, plastic tubes, or metal cans. Stored sealed. One-pack type sealant sealed and stored in a cylindrical cartridge is usually discharged and injected into joints, gaps, cracks, etc. using a sealing gun, and two-pack type sealant usually requires a main agent and a curing agent. Accordingly, after mixing the color master uniformly, it is sucked into a sealing gun and then discharged and injected into joints, gaps, cracks, etc.

Sealing work is performed by filling and injecting the above sealant into places that require sealing, such as joints and gaps between various members, and cracked portions of various members, and smoothing the surface by spatula finishing and leaving it to stand. Usually, dust and dirt on the surface of the adherend are removed, a primer is applied as necessary, and the sealant is filled and injected after drying. When the joints, gaps or cracks are deep, the back-up material is often inserted in advance to reduce the amount of filling or injection with the sealant. In addition, it is unsightly if sealant adheres to the joints, gaps, or cracks, so masking tape should be applied to the periphery before filling or filling with sealant, and the masking tape should be peeled off after filling or filling with sealant or spatula finishing. There are many.

One-component type sealants are often moisture-curing and harden gradually from the surface to the back, so they are often left for a few days after filling or pouring to wait for the curing to complete. Of course, the curing time varies depending on the type and brand of sealant, temperature, humidity, wind speed, sunshine duration, etc. The two-component type sealant is a deep-curing type, and both the surface and the deep part are cured at the same time, but it is often left for several days after filling or pouring to wait for the curing to complete. Of course, the curing time varies depending on the type and brand of sealant, temperature, wind speed, sunshine duration, etc. Since caulking material solidifies from the surface to the deep part as the solvent or water volatilizes, it is often left for a few days to 1 or 2 weeks after filling or pouring to wait for solidification to complete.

When the sealant that is filled and injected into joints and gaps between various members, such as cracks in various members, and the injected sealant hardens, the sealing operator or the inspector can attach the pressing rod of the present invention to the cured sealant. By pressing the tip of the pressing rod of the portable load cell under a predetermined load, a defective adhesion point or a defective curing point is inspected and inspected.
The predetermined load is preferably such a load that the sealant is peeled off from the adherend at a place where the sealant is poorly adhered to the adherend, but the sealant is not peeled off or damaged at a place where adhesion is good. In addition, the sealant sinks at a poorly cured portion of the sealant, but it is preferable that the load is such that the sealant does not sink at a well cured portion.

However, in order to know such a predetermined load at each sealing work location, a destructive inspection is required, and it may be necessary to repeat the sealing work by removing the sealant peeled off from the adherend or the damaged sealant.
Therefore, the portable load cell with a pressure bar was applied to the cured sealant of the test specimen prepared under the same conditions as the sealing conditions at the sealing work site (however, the sealant was properly cured and adhered to the adherend). It is preferable that the load value smaller than the minimum load value obtained by pressing the tip end of the pressing rod to peel off the sealant from the adherend or measuring the damaged load value is a predetermined load value.

To create a specimen with the sealant properly cured and completely adhered to the adherend while creating it under the same conditions as the sealing conditions at the sealing work site, use the same material as the adherend at the sealing work site. Sealing work using the same sealant as the sealant used for the test piece and sealing work, and the same primer as that applied to the adherend at the sealing work site (provided that a primer is used for the sealing work) Adopt a gap with the same shape as the joints or gaps at the location, clean the surface of the test piece that contacts the sealant to remove dirt and foreign matter, apply primer to the surface and dry it (however, sealing Only when using a primer for the operation), the sealant is filled or injected into the gap of the test piece indoors to completely cure. In may to stand.

To measure the load value when the sealant is peeled off from the adherend by pressing the tip of the portable load cell with pressure bar against the cured sealant of the test body, or the damaged load value is measured, the same test body is cured. It is good not only to measure several points of the sealant, but also to measure several specimens. The minimum measured value of the plurality of measured values thus obtained may be used as the minimum load value used at the sealing work location.

The predetermined load value used in each sealing work location should be smaller than the minimum load value obtained in the preliminary test. However, the minimum load value varies depending on whether a strict inspection or a sweet inspection is performed. . When performing a strict inspection, 70% to 95% of the minimum load value obtained in the preliminary test is preferable, and when performing a sweet inspection, 10% to 30% of the minimum load value obtained in the preliminary test is preferable. It is preferably 30% to 70% when a medium severity inspection is performed.

The inspection tool used in the inspection method of the present invention is a portable load cell with a pressing bar. Since it is portable, it has a size and weight that can be carried with one hand. A portable load cell with a pressure bar comprises a load cell body and a pressure bar.
The portable load cell body preferably has a load value display portion that can be visually observed, and a load value scale plate or a load value digital display portion is exemplified as the load value display portion. The load value display unit may notify the load value by voice.
A portable load cell main body having a load value display portion that can be visually checked includes a load meter main body and a load value display portion that can be visually checked. The pressing bar extends so as to be able to reciprocate in the axial direction directly or indirectly from the load cell body.

In a preferred load cell with a pressure bar, a load value display portion is present at the end or center of the load meter body, and the pressure bar extends directly or indirectly from the body. The pressing rod is connected to a spring in a spring case in the main body, and is elastically supported so as to be capable of reciprocating in the axial direction. It is preferable that the base portion of the pressing rod is housed in the guide so that the pressing rod does not move left and right when reciprocating in the axial direction. The guide is built in the main body, but a part of the guide may extend outside the main body. Alternatively, it is preferable that a rotatable locking protrusion is in close contact with both side surfaces of the pressing rod. A spring is housed in the spring case by a screw lid. When the load cell body is gripped by hand and the tip of the pressing bar is pressed against the cured sealant, the spring is compressed when the load cell approaches the cured sealant, and this compression force becomes the load value. This is indicated by the indicator needle on the load value scale plate.

The pressing bar has a length that can reach the cured sealant at the sealing work portion and protrudes from the main body and the load value display portion even when shortened when a load is applied. When a part of the guide extends outside the main body, the pressing rod protrudes from the tip of the guide, the tip of the pressing rod can reach the cured sealant at the sealing work site, and when a load is applied. Even if shortened, it has a length that protrudes from the guide.

The pressing bar has a thickness and strength that do not bend when a load is applied. The cross-sectional shape may be any of a circle, an ellipse, a square, a rectangle, etc., and may be a cylinder. Since the tip of the pressing rod is pressed against the cured sealant, it is necessary to have a shape that does not damage the normally cured sealant. Examples of the shape of the tip part include a substantially hemispherical shape, a substantially semicylindrical shape orthogonal to the axial direction, a prismatic shape having no sharp corners, and a cylindrical shape having no sharp corners. Examples of the material of the pressing rod include bamboo; wood; metals such as stainless steel, steel, aluminum, and duralumin; ceramics; and tough thermoplastic resins such as polypropylene resin, polyethylene terephthalate resin, and polycarbonate resin. The surface of the metal pressing bar may be painted. The thermoplastic resin pressure bar may have a metal core.
If the tip is hard, the cured sealant may be damaged when pressed, so the tip is preferably made of bamboo, wood, synthetic resin, metal or hard rubber covered with thermoplastic resin or rubber. .

The portable load cell used in the inspection method of the present invention is conveniently selected from commercially available small spring load cells, push-pull gauges or force gauges. Examples of such commercially available products include a mechanical force gauge and a digital force gauge manufactured by Imada Co., Ltd .; a handy analog force gauge and a handy force gauge manufactured by Japan Measuring System Co., Ltd .; a popular push-pull gauge manufactured by Shiro Sangyo Co., Ltd., and a digital simple Type push-pull gauge, mechanical force gauge, low cost force gauge; WINDOWEASE ^TM Force Gauge manufactured by A-Solution Co., USA. Commercially available spring-type load cells, push-pull gauges or force gauges are equipped with pressing rods (sometimes called push rods, plungers, measuring terminals or attachments), but are suitable for inspection of hardened sealants. Since it does not necessarily have a length, shape, modulus, strength, etc., it may be replaced or modified with one having a length, shape, modulus, strength, etc. suitable for inspection of a cured sealant.
DRAG CHECKER DC1005 from Tanashin Electric Co., Ltd. is for detecting fishing line tension and not a load meter, but it is suitable for the inspection method of the present invention if a pressure rod is attached to the tension detection projection. It becomes a portable load cell. Instead of diverting a commercially available portable load cell, a new dedicated portable load cell may be designed and produced.

Next, examples of the present invention and comparative examples thereof are listed. In the table, Tmax in the tensile adhesion test column is the maximum tensile stress when the tensile adhesion test specified in JIS A1439 is performed, Emax is the elongation at the maximum tensile stress, CF is cohesive failure, and tCF is thin-layer aggregation. AF indicates adhesive failure (interfacial debonding). Further, Tmax in the pressure test column indicates a maximum load value. The unit of the load value is originally kgf. However, since the display on the scale plate 4 is kg, it is set to kg.

[Example 1]
Drag checker (Drag checker) DC1015 from Tanasin Electric Co., Ltd. (weight: 90g, load value display unit 3 is placed near the center from the rear end of main unit 2 in the shape of a flat plate. The protrusion 5 for stress detection protrudes in the center near the tip of each of the protrusions, and one locking protrusion 6 is fixed on each side of the protrusion 5 for stress detection. (Refer FIG. 1, FIG. 2.) The test | inspection tool 1 was produced by inserting the stress detection protrusion 5 in the hole which exists in the lower surface of the press rod connecting member 7. The pressing rod 8 which is a bamboo square bar (width 11 mm, thickness 5 mm, length 43 mm) has a root portion of a pressing rod connecting member 7 having an aluminum square rod (width 11 mm, thickness 9 mm, length 43 mm). It is attached to and integrated with the lower surface notch of Although the rod connecting member 7 is in close contact with the locking projection 6, the locking projection 6 is rotatable, so that the pressing rod connecting member 7 is slidable in the axial direction. The tip portion 9 is rounded in the thickness direction (about 5R), and is semicircular when viewed from the side (see FIGS. 1 and 3). When the tip portion 9 of the pressing bar 8 was pressed against the cured sealant, the pressing bar 8 did not shake from side to side, and the needle moved on the scale plate 4 and the load value could be visually observed.

[Example 2]
Toray Dow Corning Silicone Co., Ltd. cleans the adherend between the glass panel / aluminum mold (width 15mm, depth 12mm, length 500mm) by wiping with a clean cloth soaked in organic solvent. A company primer (trade name Primer D-3) was applied and air-dried. Uniform mixture of base and curing agent of high modulus silicone sealant for structural glazing (trade name SE797 sealant), a two-component dealcoholization type manufactured by Toray Dow Corning Silicone Co., Ltd., at a weight ratio of 100: 10 Was discharged and injected into the joint using a sealing gun, and after smoothing, the mixture was left at room temperature for 60 days. After confirming that the sealant is well cured to the bottom, the inspection tool 1 produced in Example 1 was given to three persons (A, B, C) who regularly inspect the sealing work site. Used to inspect. The cured silicone sealant in the joint was inspected by pressing it at the tip 9 of the pressing bar 8 without looking at the scale plate 4 as in the normal inspection. Although the entire length of the joint was inspected, no part of the cured silicone sealant peeled off the joint wall. Also, there was no place where the cured silicone sealant was depressed. Table 1 shows the load values at five arbitrarily selected points during the inspection.

表１より、３名とも安定した荷重値範囲で検査をしていることが確認され、しかも３名の荷重値は似通っていることが確認された。

From Table 1, it was confirmed that all three persons were inspecting in a stable load value range, and the load values of the three persons were confirmed to be similar.

[Comparative Example 1]
In Example 2, 5 persons (D, E, F, G, H) who are not regularly inspecting the sealing work site are inspected without looking at the scale plate 4 of the inspection tool 1, and arbitrarily 5 The load values at the locations are shown in Table 2. The load value varied in the range of 3.5 to 10.5 kg. It has been confirmed that when a person who has not inspected the sealing work site is inspected without looking at the scale plate 4, a large variation occurs depending on the person who inspects. Even if inspection is performed using a bamboo spatula instead of the inspection tool 1, it is considered that the same large variation appears.

According to the inspection results of Example 2 and Comparative Example 1, even if a person who does not regularly inspect the sealing work site, the cured silicone sealant in the joint is graduated using the inspection tool 1 prepared in Example 1. When checking with the tip 9 of the pressing rod 8 within the load value range of 8.0 to 10.0 kg while looking at the plate 4, within the same load value range as those who are constantly inspecting the sealing work site. You can see that it can be inspected.

[Example 3]
Three types of adherends (polypropylene resin plate, polycarbonate resin plate, anodized aluminum plate) and two-component dehydroxylamine type low modulus high elongation silicone sealant made by Toray Dow Corning Silicone Co., Ltd. (Name SE792 sealant) (base, curing agent and color master mixed uniformly in a weight ratio of 100: 2.5: 2.5) or a one-component dealcoholization type manufactured by Toray Dow Corning Silicone Co., Ltd. By using a high modulus silicone sealant for structural glazing (trade name SE760SG), 6 adhesion durability test bodies each defined in JIS A1439 were produced. These adhesion durability test specimens were prepared by wiping the adherend surfaces of the two adherends with a clean cloth soaked with an organic solvent, and in some cases, a primer manufactured by Toray Dow Corning Silicone Co., Ltd. (Product name primer D-3) was applied and air-dried, then the silicone sealant was injected between each of the two adherends, and cured according to the curing conditions (after curing) of the tensile adhesion test of JIS A1439. Is.
Ten of each of the six adhesion durability test specimens were pulled at a rate of 50 mm / min with an Orientec tensile tester to measure the maximum tensile stress, and the peeled and ruptured state of the cured silicone sealant was observed. Recorded. For the remaining three bodies, the cured silicone sealant was pushed with the tip 9 of the pressing bar 8 of the inspection tool 1 produced in Example 1 until the scale plate needle pointed to a maximum value of 15 kg, and peeled off to the adhesive surface. And the load value (Tmax) when peeling occurred was recorded. Table 3 shows the average value of three test bodies using SE792 sealant, and Table 4 shows the average value of three test bodies using SE760SG.

ＳＥ７９２シーラントについては、被着体がポリプロピレン樹脂とポリカーボネ―ト樹脂の場合は、荷重値５．０〜７．５ｋｇ位で検査すると、プライマーを塗布した箇所は剥離しないが、プライマーの塗布を怠った箇所は剥離するので、常日頃シーリング作業個所の検査を行っていない者でもプライマーの塗布忘れという施工ミスを発見することができることがわかる。被着体が陽極酸化アルミの場合は、ＳＥ７９２シーラントの硬化不良箇所や、充填不足個所を見つけるには荷重値８．０〜１３ｋｇ位で押圧するとよいことがわかる。

As for SE792 sealant, when the adherend is polypropylene resin and polycarbonate resin, when the load value is in the range of 5.0 to 7.5 kg, the portion where the primer is applied does not peel off, but the primer is neglected. Since the part is peeled off, it can be seen that even those who have not inspected the sealing work site on a regular basis can find a construction error that they forgot to apply the primer. In the case where the adherend is anodized aluminum, it can be seen that it is better to press at a load value of about 8.0 to 13 kg in order to find a poorly cured part or insufficiently filled part of the SE792 sealant.

被着体がポリカーボネートと陽極酸化アルミの場合は、ＳＥ７６０ＳＧの硬化不良箇所や、充填不足個所を見つけるには荷重値８〜１４ｋｇ位で押圧するとよいことがわかる。

In the case where the adherend is polycarbonate and anodized aluminum, it can be seen that pressing with a load value of about 8 to 14 kg is necessary to find a poorly cured portion of SE760SG or a portion with insufficient filling.

[Example 4]
Adhesion durability specified in JIS A1439 using HAMATITE (registered trademark) MILEX-Z made by Yokohama Rubber Co., Ltd., two commercially available two-component polyisobutylene sealants, using an anodized aluminum test panel as an adherend Six test specimens were prepared, and nine adhesion durability test specimens defined in JIS A1439 were produced using a penguin seal 7000 manufactured by Sunstar Co., Ltd. These adhesion durability test specimens were cleaned by wiping the adherend surfaces of the two adherends with a clean cloth soaked in organic solvent, applying the attached dedicated primer, air-drying, A mixture of the base material of each of the above polyisobutylene sealants, a curing agent, and a color master was injected into the gap between the adherends and cured according to the curing conditions (after curing) of the tensile adhesion test of JIS A1439. Is.
Each of the three adhesion durability test specimens was pulled at a rate of 50 mm / min with an orientec tensile tester, the maximum tensile stress was measured, and the fracture state was observed and recorded. For each of the three adhesion durability test bodies, the cured polyisobutylene sealant was pushed with the tip 9 of the pressing bar 8 of the inspection tool 1 produced in Example 1 until the needle on the scale plate pointed to a maximum value of 15 kg, and the adhesive surface Whether or not peeling occurred and the load value when peeling occurred were recorded. Measurement was also performed using 6 adhesion durability test specimens prepared in the same manner as described above except that the dedicated primer was not applied. Table 5 shows the average value of three adhesion durability test specimens.

プライマー塗布の場合には、いずれの場合も荷重値が７ｋｇを過ぎたところで硬化したポリイソブチレンシーラントが破壊してしまった。プライマーを塗布しない場合には、いずれの場合も荷重値が４ｋｇ強で硬化したポリイソブチレンシーラントの剥離が観測された。したがって、荷重値４．５〜６．０ｋｇ位で押圧すると、常日頃シーリング作業個所の検査を行っていない者でもプライマーの塗布忘れという施工ミスを発見することができることがわかる。

In the case of primer application, in any case, the cured polyisobutylene sealant was destroyed when the load value exceeded 7 kg. When the primer was not applied, peeling of the cured polyisobutylene sealant was observed in each case with a load value of over 4 kg. Therefore, it can be seen that when the load value is about 4.5 to 6.0 kg, even a person who has not inspected the sealing work site on a regular basis can find a construction error that the application of the primer is forgotten.

ペンギンシール７０００は、荷重値４．５〜５．０ｋｇ位で検査すると、プライマーを塗布した箇所は剥離しないが、プライマーの塗布を怠った箇所は剥離するので、常日頃シーリング作業個所の検査を行っていない者でもプライマーの塗布忘れという施工ミスを発見することができることがわかる。 Further, with respect to the remaining three adhesion durability test specimens produced using the penguin seal 7000, the scale of the scale plate 4 of the inspection tool 1 was pressed for 10 seconds so that it points to 5 kg, and the state of the cured polyisobutylene sealant was determined. Observed. No abnormalities were observed in the test specimens using the primer even after pressing for 10 seconds. Interfacial debonding was observed within 10 seconds for the test specimens that did not use the primer. In the case of the penguin seal 7000, it was found that the presence or absence of adhesion abnormality could be confirmed without destroying the cured polyisobutylene sealant by inspecting at a load value of about 5 kg.
From the above experiments, it was confirmed that the optimum load range for inspection differs depending on the type and brand of the target sealant.

When the penguin seal 7000 is inspected at a load value of about 4.5 to 5.0 kg, the part where the primer is applied does not peel off, but the part where the primer is not applied is peeled off. It can be seen that even those who have not been able to discover the construction mistake of forgetting to apply the primer.

FIG. 1 is a perspective view of an inspection tool 1 manufactured in Example 1. FIG. FIG. 2 is a plan view of the inspection tool 1 produced in Example 1. FIG. FIG. 3 is a side view of the inspection tool 1 manufactured in Example 1. FIG. FIG. 4 is a side view of the pressing rod 8 used in the inspection tool 1 manufactured in Example 1. FIG. FIG. 5 is a perspective view of a pressing rod having a different tip shape from the pressing rod 8. 6 is a side view of the pressing rod 8 and the pressing rod having a different tip shape from the pressing rod of FIG. FIG. 7 is a side view of the pressing rod of FIG. FIG. 8 is a plan view of the pressing rod of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Inspection tool 2 Inspection tool main body 3 Load value display part 4 Scale plate 5 Stress detection protrusion 6 Locking protrusion 7 Press bar connecting member 8 Press bar 9 Tip part of press bar

Claims (9)

By pressing the tip of the pressure rod of a portable load cell with a pressure rod under a predetermined load against the sealant that has been cured at the sealing work site, the poor adhesion of the sealant to the adherend or the poor curing of the sealant is found. A method for inspecting a state of adhesion of a sealant to an adherend or a state of curing of the sealant. 2. The load according to claim 1, wherein the predetermined load is a load at which the sealant is peeled off from the adherend at a place where the sealant is poorly adhered to the adherend, but the sealant is not peeled off or damaged at a place where adhesion is good. How to inspect. 2. The inspection method according to claim 1, wherein the predetermined load is a load such that the sealant is depressed at a poorly cured portion of the sealant, but the sealant is not depressed at a well cured portion. A portable load cell with a pressure bar applied to the cured sealant of the test specimen prepared under the same conditions as the sealing conditions at the sealing work site (however, the sealant cured normally and adhered completely to the adherend) 4. The pressure is less than a minimum load value obtained by measuring a load value at which the tip of the pressure bar is pressed to peel off or damage the sealant from the adherend. The inspection method described. The inspection method according to claim 4, wherein the predetermined load is 30% to 95% of the minimum load value. An inspection tool for bonding or curing a sealant cured at a sealing work site to an adherend, characterized by being a portable load cell with a pressing bar. 7. The inspection tool according to claim 6, wherein the portable load cell has a load scale plate or a digital display of the load. The inspection tool according to claim 6 or 7, wherein a tip end portion of the pressing bar is substantially hemispherical, has a substantially semicircular shape in a lateral direction, or a prismatic shape having no sharp corners. The inspection tool according to any one of claims 6 to 8, wherein a material of a tip portion of the pressing bar is bamboo, wood, or synthetic resin.

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