JP2017090213A - Adhesive strength evaluation method and adhesive strength evaluation device - Google Patents

Adhesive strength evaluation method and adhesive strength evaluation device Download PDF

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JP2017090213A
JP2017090213A JP2015219788A JP2015219788A JP2017090213A JP 2017090213 A JP2017090213 A JP 2017090213A JP 2015219788 A JP2015219788 A JP 2015219788A JP 2015219788 A JP2015219788 A JP 2015219788A JP 2017090213 A JP2017090213 A JP 2017090213A
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裕思 樋口
Hiroshi Higuchi
裕思 樋口
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Osaka Gas Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide an adhesive strength evaluation method and an adhesive strength evaluation device which reproduce a phenomenon of peeling of an adherend from an outer surface of a buried pipe in a relatively faithful manner.SOLUTION: An adhesive strength evaluation method executes the following steps in this order: an interposing step of interposing a long member 10 between an adhesive surface of a test piece S and an adherend 30 in a state of allowing both ends 10a, 10b in a longitudinal direction to be exposed from between the adhesive surface of the test piece S and the adherend 30; a bonding step of bonding the adhesive surface of the test piece S and the adherend 30 with an adhesive 31 in such a state that the long member 10 is interposed; and a peeling force applying step of applying peeling force for peeling the adherend 30 from the adhesive surface of the test piece S by pulling at least either both ends 10a, 10b of the long member 10 or the test piece S in a manner to peel the adherend 30 from the adhesive surface of the test piece S.SELECTED DRAWING: Figure 1

Description

本発明は、試験片の接着面に被接着物を接着する接着剤の接着強度を評価する接着強度評価方法、及び接着強度評価装置に関する。   The present invention relates to an adhesive strength evaluation method and an adhesive strength evaluation apparatus for evaluating the adhesive strength of an adhesive that adheres an adherend to an adhesive surface of a test piece.

従来、接着剤の短期強度を評価するＪＩＳに規格化された手法としては、引張接着強さ評価方法（ＪＩＳ Ｋ ６８４９）、引張せん断接着強さ評価方法（ＪＩＳ Ｋ ６８５０）、圧縮せん断接着強さ評価方法（ＪＩＳ Ｋ ６８５２）、割裂接着強さ評価方法（ＪＩＳ Ｋ ６８５３）、剥離接着強さ評価方法（ＪＩＳ Ｋ ６８５４）、衝撃接着強さ評価方法（ＪＩＳ Ｋ ６８５５）、曲げ接着強さ評価方法（ＪＩＳ Ｋ ６８５６）等が挙げられる。
例えば、剥離接着強さ評価方法の一例としては、特許文献１の図２等に、接着対象部材としての試験片の接着面に対し接着剤により接着された被接着物の一端を掴んで、接着面に対して９０°の剥離角度で引っ張ることで、剥離接着強さを評価する評価装置が開示されている。
一方、接着剤の耐久性（長期強度）を評価するＪＩＳに規格化された手法としては、クリープ破壊試験（ＪＩＳ Ｋ ６８５９（１９９４））が知られているのみである。 Conventionally, methods standardized by JIS for evaluating the short-term strength of adhesives include tensile bond strength evaluation method (JIS K 6849), tensile shear bond strength evaluation method (JIS K 6850), compression shear bond strength. Evaluation method (JIS K 6852), split bond strength evaluation method (JIS K 6853), peel bond strength evaluation method (JIS K 6854), impact bond strength evaluation method (JIS K 6855), bending bond strength evaluation method (JIS K 6856).
For example, as an example of a peel adhesion strength evaluation method, in FIG. 2 of Patent Document 1, etc., one end of an object to be bonded bonded to an adhesive surface of a test piece as a bonding target member by an adhesive is grasped and bonded. An evaluation device that evaluates peel adhesion strength by pulling at a peel angle of 90 ° to a surface is disclosed.
On the other hand, only a creep rupture test (JIS K 6859 (1994)) is known as a method standardized by JIS for evaluating the durability (long-term strength) of an adhesive.

国際公開第９６／００８９１号International Publication No. 96/00891

上述した方法は、接着剤自身の接着強度評価には有効であるが、ＪＩＳ規格で定められる接着対象部材と、実際の接着環境における接着対象部材とは異なるため、実際の接着環境の下における接着強度を評価しているとは言い難い。
一例としては、通常の使用において、接着剤は、接着対象部材としての試験片と被接着物との間に介在し、表面には存在しないため、接着剤自身を掴んで引っ張るような評価手法は実行することができず、ＪＩＳ規格で定められたような理想的な評価ができないのが現状である。
他の例としては、管の外表面と、管を保護する目的で管の外表面に巻回された被接着物としての保護チューブとの接着剤による接着性の評価は、接着面が管の外表面で曲面であるため（平面でないため）、上述したＪＩＳにて規格された評価方法を用いて評価することが困難である。
このため、現状では、管の外表面と保護チューブとを接着剤により接着している接着状態において、保護チューブを切断し、切断した保護チューブの端部を掴んで引っ張るピール試験で評価している。当該ピール試験としては、管外表面に対し保護チューブの端部の引っ張り方向を、管軸方向に直交する９０°方向とする９０°ピール試験や、管外表面に対し保護チューブの端部の引っ張り方向を、管周方向に沿う鋭角とする鋭角ピール試験等がある。
ここで、実際の接着環境での剥離の一例に関し、説明を追加すると、図６に示すように、管として埋設管Ｓを用いると共に、当該埋設管Ｓの外周面に管を保護するための保護チューブＴを接着剤にて接着したものを地中に埋設する接着環境においては、管を被覆する保護チューブＴは、埋設管Ｓの周囲の土砂が埋設管Ｓの下方へ移動することで、保護チューブＴと埋設管Ｓとの間にせん断荷重を受けながら、接着剤による接着力の低下に伴って、下方にずれて垂れや剥がれが最下部にて生じる。即ち、図６で右図に示すように、埋設管Ｓの最下部においては、鉛直方向で下方側へ、埋設管Ｓから保護チューブＴを剥離する力がかかる。
このような実際の接着環境での剥離の過程は、上述した９０°ピール試験や、鋭角ピール試験では、適切に反映できておらず、改善の余地があった。また、９０°ピール試験や、鋭角ピール試験では、保護チューブＴ自身を掴んで引っ張るのであるが、保護チューブＴ自身が掴み難い材質等の場合、当該行為自体が現実的なものではなく改善の余地があった。更には、図５に示すように、剥離強度（接着強度）に関しては、剥離角度（ピール角度）によって大きく変化する。このため、実際の接着環境での剥離過程における剥離角度と異なる９０°ピール試験や、鋭角ピール試験では、適切な接着強度（剥離強度）を評価できていない虞があった。 The above-mentioned method is effective for evaluating the adhesive strength of the adhesive itself, but the adhesion target member defined in the JIS standard is different from the adhesion target member in the actual adhesion environment. It is hard to say that strength is being evaluated.
As an example, in normal use, an adhesive is interposed between a test piece as a member to be bonded and an object to be bonded, and does not exist on the surface. Therefore, there is no evaluation method for grasping and pulling the adhesive itself. The current situation is that it cannot be executed and an ideal evaluation as defined in the JIS standard cannot be performed.
As another example, the adhesive adhesion evaluation between the outer surface of the tube and the protective tube wound as an adherend wound around the outer surface of the tube for the purpose of protecting the tube is performed. Since the outer surface is a curved surface (because it is not a flat surface), it is difficult to evaluate using the evaluation method standardized by JIS described above.
For this reason, at present, in a bonded state in which the outer surface of the tube and the protective tube are bonded with an adhesive, the protective tube is cut, and the peel test is performed by grasping and pulling the end of the cut protective tube. . The peel test includes a 90 ° peel test in which the pulling direction of the end of the protective tube is 90 ° perpendicular to the tube axis direction with respect to the outer surface of the tube, and a pulling of the end of the protective tube with respect to the outer surface of the tube. There is an acute peel test in which the direction is an acute angle along the pipe circumferential direction.
Here, regarding an example of peeling in an actual bonding environment, a description will be added. As shown in FIG. 6, a buried pipe S is used as a pipe, and protection for protecting the pipe on the outer peripheral surface of the buried pipe S is provided. In the bonding environment where the tube T bonded with an adhesive is buried in the ground, the protective tube T covering the tube is protected by the earth and sand around the buried tube S moving below the buried tube S. While receiving a shear load between the tube T and the buried pipe S, as the adhesive force is reduced by the adhesive, the bottom part is shifted downward and droops or peels off. That is, as shown in the right diagram in FIG. 6, at the lowermost part of the buried pipe S, a force is applied to peel the protective tube T from the buried pipe S downward in the vertical direction.
Such a peeling process in an actual bonding environment cannot be properly reflected in the 90 ° peel test and the acute peel test described above, and there is room for improvement. Further, in the 90 ° peel test and the acute angle peel test, the protective tube T itself is grasped and pulled. However, when the protective tube T itself is difficult to grasp, the action itself is not realistic and there is room for improvement. was there. Furthermore, as shown in FIG. 5, the peel strength (adhesion strength) varies greatly depending on the peel angle (peel angle). For this reason, there was a possibility that an appropriate adhesive strength (peel strength) could not be evaluated in a 90 ° peel test or an acute angle peel test different from the peel angle in the peel process in an actual adhesive environment.

本発明は、上述の課題に鑑みてなされたものであり、その目的は、例えば、被接着物が外表面に接着剤により接着された埋設管が埋設されているような接着環境において、埋設管の外表面からの被接着物の剥離現象を比較的忠実に再現した接着強度評価方法、及び接着強度評価装置を提供する点にある。   The present invention has been made in view of the above-described problems, and the object thereof is, for example, in a bonding environment in which a buried pipe in which an adherend is bonded to an outer surface by an adhesive is buried. It is the point which provides the adhesive strength evaluation method and the adhesive strength evaluation apparatus which reproduced the peeling phenomenon of the to-be-adhered object from the outer surface of this comparatively faithfully.

上記目的を達成するための接着強度評価方法は、
試験片の接着面に被接着物を接着する接着剤の接着強度を評価する接着強度評価方法であって、その特徴構成は、
前記試験片の前記接着面と前記被接着物との間に、長手方向の両端部を前記試験片の前記接着面と前記被接着物との間から露出させた状態で、長尺状部材を介在配置させる介在配置工程と、
前記長尺状部材を介在配置させた状態で、前記試験片の前記接着面と前記被接着物との間を前記接着剤にて接着する接着工程とを、
前記介在配置工程及び前記接着工程を当該記載の順に実行した後、又は前記接着工程及び前記介在配置工程を当該記載の順に実行した後に、
前記試験片の前記接着面から前記被接着物を剥離するように、前記長尺状部材の前記両端部又は前記試験片の少なくとも何れか一方を牽引する形態で、前記試験片の前記接着面から前記被接着物を剥離させる剥離力を付与する剥離力付与工程を実行する点にある。 The adhesive strength evaluation method for achieving the above object is as follows:
It is an adhesive strength evaluation method for evaluating the adhesive strength of an adhesive that adheres an adherend to the adhesive surface of a test piece, and its characteristic configuration is:
In a state where both end portions in the longitudinal direction are exposed between the adhesive surface of the test piece and the adherend between the adhesive surface of the test piece and the adherend, a long member is provided. An intervening arrangement step for interposing, and
In the state where the elongated member is interposed, an adhesion step of adhering between the adhesion surface of the test piece and the adherend with the adhesive,
After executing the interposition arrangement step and the adhesion step in the order of the description, or after executing the adhesion step and the interposition arrangement step in the order of the description,
In the form of pulling at least one of the both end portions of the elongated member or the test piece so as to peel the adherend from the adhesion surface of the test piece, from the adhesion surface of the test piece. It exists in the point which performs the peeling force provision process which provides the peeling force which peels the said to-be-adhered thing.

上記特徴構成によれば、介在配置工程にて、試験片の接着面と被接着物との間に、長手方向の両端部が試験片の接着面と被接着物との間から露出させた状態で、長尺状部材を介在配置させると共に、当該長尺状部材を介在配置させた状態で、試験片の接着面と被接着物との間を接着剤にて接着する接着工程を実行した後に、試験片から被接着物を剥離するように、長尺状部材の両端部又は試験片の少なくとも何れか一方を牽引する形態で、試験片から被接着物を剥離させる剥離力を付与する剥離力付与工程を実行するから、例えば、接着片に接着する被接着物を、接着片と被接着物との間から、接着片から被接着物を離間する方向へ、長尺状部材を介して、被接着物に剥離力を付与することができる。これにより、例えば、図６に示すように、保護チューブを外周面に接着した埋設管の実際の接着環境での剥離、即ち、接着面に対し略垂直方向へ働く剥離力による剥離を、比較的忠実に再現した剥離過程における接着強度の評価を実現できる。
更に、当該評価試験においては、被接着物を掴んで引っ張る必要がないため、被接着物が掴み難い物質であっても、良好に接着強度の評価を実行できる。
尚、本発明にあっては、試験片の接着面が、長尺状部材を嵌入可能な連続切欠部が形成されたものである場合には、接着工程を実行した後に、介在配置工程を実行しても良い。 According to the above characteristic configuration, in the interposition arrangement process, a state in which both ends in the longitudinal direction are exposed from between the adhesion surface of the test piece and the adherend between the adhesion surface of the test piece and the adherend. Then, after performing the adhesion process of adhering between the adhesion surface of the test piece and the adherend with an adhesive in a state where the elongated member is interposed and disposed. The peeling force that gives the peeling force to peel the adherend from the test piece in a form that pulls at least one of both ends of the long member or the test piece so as to peel the adherend from the test piece Since the application step is performed, for example, the adherend to be bonded to the adhesive piece is separated from the adhesive piece and the adherend in the direction of separating the adherend from the adhesive piece via the elongated member, A peeling force can be imparted to the adherend. As a result, for example, as shown in FIG. 6, peeling in the actual bonding environment of the buried pipe having the protective tube bonded to the outer peripheral surface, that is, peeling due to the peeling force acting in a direction substantially perpendicular to the bonding surface, The evaluation of adhesive strength in the peeling process faithfully reproduced can be realized.
Further, in the evaluation test, since it is not necessary to grasp and pull the adherend, even if the adherend is difficult to grasp, the adhesion strength can be evaluated satisfactorily.
In the present invention, when the bonding surface of the test piece is formed with a continuous notch portion into which a long member can be inserted, the interposition arrangement process is performed after the bonding process is performed. You may do it.

接着強度評価方法の更なる特徴構成は、
前記試験片の前記接着面を、前記接着面の中央領域を通る状態で、前記接着面の縁部の一端部から他端部まで連続して切り欠く連続切欠部を形成する連続切欠形成工程を、前記介在配置工程の前に実行すると共に、
前記介在配置工程において、前記長尺状部材を前記連続切欠部に嵌入する点にある。 The further characteristic composition of the adhesive strength evaluation method is
A continuous notch forming step of forming a continuous notch portion in which the adhesive surface of the test piece is continuously notched from one end to the other end of the edge of the adhesive surface in a state of passing through a central region of the adhesive surface; , Prior to the intervening placement step,
In the interposition arrangement step, the elongated member is inserted into the continuous notch.

上述した評価方法の介在配置工程にあっては、試験片の接着面と被接着物との間に、長手方向の両端部が試験片の接着面と被接着物との間から露出させた状態で、長尺状部材を介在配置させるから、接着面が面一状である場合には、長尺状部材が存在する部位において、被接着物が、接着面の表面から離間した状態となり、実際の接着環境から異なった接着環境で接着強度の評価を行うことになる場合がある。
上記特徴構成によれば、試験片の接着面を、接着面の中央領域を通る状態で、接着面の縁部の一端部から他端部まで連続して切り欠く連続切欠部を形成する連続切欠形成工程を、介在配置工程の前に実行すると共に、介在配置工程において、長尺状部材を連続切欠部に嵌入するので、試験片と被接着物との間で長尺状部材が存在する部位においても、試験片の接着面の表面から、被接着物が大きく離間することを防止できる。これにより、現実の接着環境に近い状態で接着強度の評価を行うことができる。 In the interposition arrangement step of the evaluation method described above, a state in which both ends in the longitudinal direction are exposed from between the adhesion surface of the test piece and the adherend between the adhesion surface of the test piece and the adherend. Since the long member is interposed, when the bonding surface is flush, the object to be bonded is separated from the surface of the bonding surface at the site where the long member exists. In some cases, the adhesive strength may be evaluated in different adhesive environments.
According to the above characteristic configuration, the continuous notch that forms the continuous notch that continuously cuts the adhesive surface of the test piece from one end to the other end of the edge of the adhesive surface while passing through the central region of the adhesive surface. The forming step is executed before the interposition arrangement step, and the long member is inserted into the continuous notch portion in the interposition arrangement step, so that the long member exists between the test piece and the adherend. In this case, it is possible to prevent the adherend from being largely separated from the surface of the bonding surface of the test piece. Thereby, the adhesive strength can be evaluated in a state close to the actual adhesive environment.

接着強度評価方法の更なる特徴構成は、
前記被接着物が熱を加えられることにより収縮する熱収縮部材であり、
当該被接着物を前記試験片に対し、前記接着面とは異なる部位の少なくとも２点で固定する固定工程と、
当該固定工程の後で前記被接着物を加熱する加熱工程とを、
前記接着工程にて前記試験片の前記接着面と前記被接着物との間に接着剤を塗布した後で、前記剥離力付与工程の前に実行する点にある。 The further characteristic composition of the adhesive strength evaluation method is
A heat shrinkable member that shrinks by applying heat to the adherend,
A fixing step of fixing the object to be bonded to the test piece at at least two points different from the bonding surface;
A heating step of heating the adherend after the fixing step,
In the said adhesion process, after apply | coating an adhesive agent between the said adhesion surface of the said test piece and the said to-be-adhered object, it exists in the point performed before the said peeling force provision process.

上記特徴構成によれば、被接着物を、熱を加えられることにより収縮する熱収縮部材から構成するから、試験片の接着面に被接着物を接着剤にて接着する際に、試験片の接着面に対し被接着物を、熱収縮力により圧接した状態で、より確実に試験片に対し被接着物を接着させることができる。
尚、上記特徴構成において、「接着工程にて試験片の接着面と被接着物との間に接着剤を塗布した後」とは、接着剤は塗布されているが、試験片の接着面と被接着物とが接着剤にて完全には接着されていない状態を意味するものとする。 According to the above characteristic configuration, since the adherend is composed of a heat shrinkable member that shrinks when heated, when the adherend is bonded to the adhesive surface of the test piece with an adhesive, In a state where the adherend is pressed against the bonding surface by heat shrinkage force, the adherend can be more reliably bonded to the test piece.
In the above-described characteristic configuration, “after applying the adhesive between the adhesion surface of the test piece and the adherend in the adhesion process” means that the adhesive is applied, but the adhesion surface of the test piece is It shall mean a state in which the adherend is not completely bonded with an adhesive.

上記目的を達成するための接着強度評価装置は、
試験片の接着面に被接着物を接着する接着剤の接着強度を評価する接着強度評価装置であって、その特徴構成は、
前記試験片の前記接着面へ前記被接着物を前記接着剤により接着した接着状態で、前記試験片の前記接着面と前記被接着物との間に介在配置可能で、且つ介在配置された介在配置姿勢でその両端部を前記試験片の前記接着面と前記被接着物との間から外部へ露出可能な長尺状部材を備え、
前記接着状態で、前記長尺状部材が前記介在配置姿勢にあるときに、前記試験片の前記接着面から前記被接着物を剥離するように、前記長尺状部材の前記両端部又は前記試験片の少なくとも何れか一方を牽引する形態で、前記試験片の前記接着面から前記被接着物を剥離させる剥離力を付与可能に構成されている点にある。 An adhesive strength evaluation apparatus for achieving the above object is as follows.
An adhesive strength evaluation apparatus for evaluating the adhesive strength of an adhesive that adheres an object to be bonded to an adhesive surface of a test piece, the characteristic configuration of which is
In an adhesive state in which the adherend is bonded to the adhesive surface of the test piece with the adhesive, the interposer can be disposed between the adhesive surface of the test piece and the adherend, and the interposition is disposed. A long member capable of exposing both ends of the test piece to the outside from between the adhesion surface of the test piece and the adherend in an arrangement posture,
In the bonded state, when the elongated member is in the interposition arrangement posture, the both ends of the elongated member or the test are peeled off from the adhesion surface of the test piece. It exists in the form which can provide the peeling force which peels the said to-be-adhered object from the said adhesion surface of the said test piece by the form which pulls at least any one of a piece.

上記特徴構成にあっては、試験片の接着面へ被接着物を接着剤により接着した接着状態で、試験片の接着面と被接着物との間に介在配置可能で、且つ介在配置された介在配置姿勢でその両端部が試験片の接着面と被接着物との間から外部へ露出可能な長尺状部材を備え、接着状態で、長尺状部材が介在配置姿勢にあるときに、試験片から被接着物を剥離するように、長尺状部材の両端部又は試験片の少なくとも何れか一方を牽引する形態で、試験片から被接着物を剥離させる剥離力を付与可能に構成されているから、例えば、接着片に接着する被接着物を、接着片と被接着物との間から、接着片から被接着物を離間する方向へ、被接着物に剥離力を付与することができる。これにより、例えば、図６に示すように、保護チューブを外周面に接着した埋設管の実際の接着環境での剥離、即ち、接着面に対し略垂直方向へ働く剥離力による剥離を、比較的忠実に再現した剥離過程における接着強度の評価を実現できる。
更に、当該評価試験においては、被接着物を掴んで引っ張る必要がないため、被接着物が掴み難い物質であっても、良好に接着強度の評価を実行できる。 In the above characteristic configuration, the object to be adhered is adhered to the adhesion surface of the test piece with an adhesive, and can be interposed between the adhesion surface of the test piece and the object to be adhered. In the interposition position, both ends are provided with a long member that can be exposed to the outside from between the adhesion surface of the test piece and the object to be bonded. In order to peel off the adherend from the test piece, it is configured to be capable of applying a peeling force to peel off the adherend from the test piece in a form of pulling at least one of both ends of the elongated member or the test piece. Therefore, for example, it is possible to apply a peeling force to the adherend in the direction of separating the adherend from the adhesive piece from between the adhesive piece and the adherend. it can. As a result, for example, as shown in FIG. 6, peeling in the actual bonding environment of the buried pipe having the protective tube bonded to the outer peripheral surface, that is, peeling due to the peeling force acting in a direction substantially perpendicular to the bonding surface, The evaluation of adhesive strength in the peeling process faithfully reproduced can be realized.
Further, in the evaluation test, since it is not necessary to grasp and pull the adherend, even if the adherend is difficult to grasp, the adhesion strength can be evaluated satisfactorily.

接着強度評価装置の更なる特徴構成は、
前記試験片の前記接着面は、前記接着面の中央領域を通る状態で、前記接着面の縁部の一端部から他端部まで連続して切り欠かれた連続切欠部が形成されたものであり、
前記長尺状部材の前記介在配置姿勢は、前記長尺状部材が前記連続切欠部に嵌入された姿勢である点にある。 Further features of the adhesive strength evaluation device
The adhesive surface of the test piece is formed with a continuous notch that is continuously cut from one end to the other end of the edge of the adhesive surface in a state of passing through a central region of the adhesive surface. Yes,
The interposition arrangement posture of the long member is that the long member is a posture in which the long member is inserted into the continuous notch.

上述した評価装置にあっては、試験片の接着面と被接着物との間に、長手方向の両端部が試験片の接着面と被接着物との間から露出させた状態で、長尺状部材を介在配置させるから、接着面が面一状である場合には、長尺状部材が存在する部位において、被接着物が、接着面の表面から離間した状態となり、実際の接着環境から異なった接着環境で接着強度の評価を行うことになる場合がある。
上記特徴構成によれば、試験片の接着面を、接着面の中央領域を通る状態で、接着面の縁部の一端部から他端部まで連続して切り欠く連続切欠部を形成されたものとすると共に、長尺状部材を連続切欠部に嵌入するので、試験片と被接着物との間で長尺状部材が存在する部位においても、試験片の接着面の表面から、被接着物が大きく離間することを防止できる。これにより、より現実の接着環境に近い状態で接着強度の評価を行うことができる。 In the evaluation apparatus described above, the lengthwise direction is exposed between the bonding surface of the test piece and the object to be bonded, with both ends in the longitudinal direction exposed from between the bonding surface of the test piece and the object to be bonded. When the bonding surface is flush, the adherend is separated from the surface of the bonding surface at the site where the long member exists, and the actual bonding environment In some cases, the adhesion strength may be evaluated in different adhesion environments.
According to the above characteristic configuration, the adhesive surface of the test piece is formed with a continuous notch that continuously cuts from one end to the other end of the edge of the adhesive surface while passing through the central region of the adhesive surface. In addition, since the long member is inserted into the continuous notch portion, the object to be bonded can be obtained from the surface of the bonding surface of the test piece even in the portion where the long member exists between the test piece and the object to be bonded. Can be prevented from separating greatly. Thereby, it is possible to evaluate the adhesive strength in a state closer to the actual adhesive environment.

接着強度評価装置の更なる特徴構成は、
前記試験片は、中空円筒状の管を管軸方向に直交する直交方向に沿って輪切りした輪切部材から、管周方向の一部を切り出した切出部材であり、
前記試験片の前記接着面は、前記管の外表面を形成していた面の一部としての前記切出部材の表面である点にある。 Further features of the adhesive strength evaluation device
The test piece is a cut-out member obtained by cutting out a part in the pipe circumferential direction from a ring-cut member obtained by cutting a hollow cylindrical tube in a direction orthogonal to the pipe axis direction.
The said adhesion surface of the said test piece exists in the point which is the surface of the said cutting member as a part of surface which had formed the outer surface of the said pipe | tube.

上記特徴構成によれば、管として埋設管を用いると共に、当該埋設管の外周面に管を保護するためのチューブを接着剤にて接着したものを地中に埋設する実際の接着環境における接着強度の評価試験を、より忠実に再現することができる。   According to the above-mentioned characteristic configuration, an embedded pipe is used as a pipe, and an adhesive strength in an actual bonding environment in which a tube for protecting the pipe is bonded to the outer peripheral surface of the buried pipe with an adhesive is buried in the ground. Can be reproduced more faithfully.

接着強度評価装置の更なる特徴構成は、
前記長尺状部材の前記介在配置姿勢は、前記長尺状部材の長手方向を、前記切出部材における前記管での管軸方向に沿わせた姿勢である点にある。 Further features of the adhesive strength evaluation device
The interposition arrangement posture of the long member is that the longitudinal direction of the long member is a posture along the tube axis direction of the tube in the cutting member.

通常、管として埋設管を用いると共に、当該埋設管の外周面に管を保護するためのチューブを接着剤にて接着したものを地中に埋設する実際の接着環境において、埋設管は、管軸方向を水平方向に沿わせた状態で配設され、剥離は、図６に示すように、埋設管の管周方向の一部で、且つ管軸方向に延びる領域（埋設管の鉛直下方側領域）において発生する。
上記特徴構成の如く、長尺状部材の介在配置姿勢を、長尺状部材の長手方向で、前記切出部材における前記管での管軸方向に沿わせた姿勢とすることで、埋設管の実際の接着環境をより適切に反映した接着強度の評価試験を実現することができる。 Normally, an embedded pipe is used as a pipe, and in an actual bonding environment in which a tube for protecting the pipe is bonded to the outer peripheral surface of the buried pipe with an adhesive, the buried pipe is a pipe shaft. As shown in FIG. 6, the peeling is a part of the pipe circumferential direction of the buried pipe and an area extending in the pipe axis direction (a vertical lower side area of the buried pipe). ).
As in the above-described characteristic configuration, the interposition arrangement posture of the long member is set to the posture along the tube axis direction of the tube in the cut member in the longitudinal direction of the long member, thereby It is possible to realize an adhesive strength evaluation test that more appropriately reflects the actual adhesive environment.

接着強度評価装置の分解斜視図Disassembled perspective view of adhesive strength evaluation device 接着強度評価装置において評価試験を行っていない状態での一部断面図Partial cross-sectional view of the adhesive strength evaluation device when no evaluation test is performed 接着強度評価装置において評価試験を行っている状態での一部断面図Partial cross-sectional view in the state where the evaluation test is performed in the adhesive strength evaluation device 剥離力（負荷）と剥離時間との関係を示すグラフ図Graph showing the relationship between peel force (load) and peel time 剥離強度と剥離角度との関係を示すグラフ図Graph showing the relationship between peel strength and peel angle 埋設管から保護チューブが剥離する剥離過程を示す遷移図Transition diagram showing the peeling process where the protective tube peels from the buried pipe

本発明の実施形態に係る接着強度評価装置１００、及び接着強度評価方法は、例えば、被接着物が外表面に接着剤３１により接着された埋設管が埋設されているような接着環境において、埋設管の外表面からの被接着物３０の剥離現象を比較的忠実に再現できる接着強度評価装置、及び接着強度評価方法に関する。
以下、本発明の実施形態に係る接着強度評価装置１００、及び接着強度評価方法に関し、図面に基づいて説明する。 The adhesive strength evaluation apparatus 100 and the adhesive strength evaluation method according to the embodiment of the present invention are embedded in an adhesive environment in which, for example, an embedded pipe in which an object to be bonded is bonded to the outer surface by an adhesive 31 is embedded. The present invention relates to an adhesive strength evaluation apparatus and an adhesive strength evaluation method that can reproduce the peeling phenomenon of the adherend 30 from the outer surface of a tube relatively faithfully.
Hereinafter, an adhesive strength evaluation apparatus 100 and an adhesive strength evaluation method according to an embodiment of the present invention will be described based on the drawings.

試験片Ｓの接着面に被接着物３０を接着する接着剤３１の接着強度を評価する接着強度評価装置１００は、図１、２、３に示すように、試験片Ｓの接着面へ被接着物３０を接着剤３１（例えば、ブチルエラストマー）により接着した接着状態で、試験片Ｓの接着面と被接着物３０との間に介在配置可能で、且つ介在配置された介在配置姿勢でその両端部１０ａ、１０ｂを試験片Ｓの接着面と被接着物３０との間から外部へ露出可能な長尺状部材１０を備え、接着状態で、長尺状部材１０が介在配置姿勢（図２に示す姿勢）にあるときに、試験片Ｓから被接着物３０を剥離するように、長尺状部材１０の両端部１０ａ、１０ｂを、試験片Ｓ側から被接着物３０側へ向けた第１方向（図１、２、３で矢印Ｘの矢示方向で、長尺状部材１０が存在する領域での接着面の法線方向）に牽引する形態で、試験片Ｓから被接着物３０を剥離させる剥離力を付与可能に構成されている。   The adhesive strength evaluation apparatus 100 that evaluates the adhesive strength of the adhesive 31 that adheres the adherend 30 to the adhesion surface of the test piece S is adhered to the adhesion surface of the test piece S as shown in FIGS. The object 30 can be interposed between the bonding surface of the test piece S and the object to be bonded 30 in the bonded state in which the object 30 is bonded with an adhesive 31 (for example, butyl elastomer), and both ends of the object 30 are disposed in the interposed position. 2 is provided with a long member 10 capable of exposing the portions 10a and 10b to the outside from between the bonding surface of the test piece S and the object to be bonded 30. 1) in which both end portions 10a and 10b of the elongated member 10 are directed from the test piece S side to the adherend 30 side so that the adherend 30 is peeled from the test piece S. Direction (in the direction indicated by the arrow X in FIGS. In a form that will drive in the normal direction) of the adhesive surface in the region, and is configured to be granted peel force for peeling the adherend 30 from the specimen S.

尚、当該実施形態に係る接着強度評価装置１００は、内部に都市ガスを通流する埋設管としての鋼管と、当該鋼管を保護するべく、鋼管の外周面に接着される保護チューブとの接着力を良好に評価できるものである。
このため、試験片Ｓとしては、中空円筒状の鋼管（例えば、６００Ａの鋼管）を管軸方向に直交する直交方向に沿って輪切りした輪切り部材（例えば、環軸方向での長さは、１ｃｍ）から、管周方向の一部（例えば、管周長さの１／２４を切り出したもの）を切り出した切出部材を採用している。当該試験片Ｓとしての切出部材は、図２、３に示すように、鋼管の外表面を形成していた面の一部が、所定の曲率を有する曲面として構成されており、当該実施形態にあっては、当該鋼管の外表面を形成していた曲面を、接着面としている。
更に、試験片Ｓとしての切出部材の接着面には、図１、２、３に示すように、接着面の中央領域を通る状態で、接着面の縁部の一端部から他端部まで連続して切り欠かれた連続切欠部Ｓａを形成されている。当該連続切欠部Ｓａは、切出部材を切り出した鋼管の管軸方向（図１で一点鎖線Ｐに沿う方向）に沿って形成されている。 In addition, the adhesive strength evaluation apparatus 100 according to the embodiment includes an adhesive force between a steel pipe as an embedded pipe through which city gas flows and a protective tube bonded to the outer peripheral surface of the steel pipe in order to protect the steel pipe. Can be evaluated well.
Therefore, as the test piece S, a round cylindrical member (for example, the length in the annular axis direction is 1 cm) obtained by cutting a hollow cylindrical steel pipe (for example, a 600A steel pipe) along the orthogonal direction perpendicular to the tube axis direction. ), A cut-out member obtained by cutting out a part in the pipe circumferential direction (for example, cut out 1/24 of the pipe circumferential length) is employed. As shown in FIGS. 2 and 3, the cutting member as the test piece S is configured such that a part of the surface forming the outer surface of the steel pipe is a curved surface having a predetermined curvature. In that case, the curved surface forming the outer surface of the steel pipe is used as the bonding surface.
Furthermore, as shown in FIGS. 1, 2, and 3, the bonding surface of the cut-out member as the test piece S passes through the central region of the bonding surface, from one end to the other end of the bonding surface. A continuous notch Sa that is continuously cut is formed. The said continuous notch Sa is formed along the pipe-axis direction (direction along the dashed-dotted line P in FIG. 1) of the steel pipe which cut out the cutting member.

当該実施形態にあっては、長尺状部材１０は、試験片Ｓの接着面へ被接着物３０を接着剤３１により接着した接着状態において、試験片Ｓの接着面と被接着物３０との間に介在配置された介在配置姿勢が、その長手方向を、試験片Ｓとしての切出部材における鋼管での管軸方向（図１で一点鎖線Ｐに沿う方向）に沿わせた姿勢となっている。
更に、長尺状部材１０は、当該実施形態にあっては、上述した介在配置姿勢が、試験片Ｓの連続切欠部Ｓａに嵌入された姿勢となっている。 In the present embodiment, the long member 10 is formed by bonding the adherend 30 to the adherend surface of the test piece S with the adhesive 31 between the adhesive face of the test piece S and the adherend 30. The interposition arrangement posture interposed between them is a posture in which the longitudinal direction is along the tube axis direction of the steel pipe in the cutting member as the test piece S (the direction along the dashed line P in FIG. 1). Yes.
Furthermore, in the present embodiment, the elongated member 10 is in the posture in which the above-described interposition arrangement posture is fitted into the continuous notch Sa of the test piece S.

介在配置姿勢にある長尺状部材１０は、その長手方向の両端部１０ａ、１０ｂを試験片Ｓの接着面と被接着物３０との間から外部へ露出させており、当該実施形態にあっては、長尺状部材１０の両端部１０ａ、１０ｂの夫々に係合して牽引する係合牽引部材４０が設けられている。説明を追加すると、当該係合牽引部材４０は、一対の脚部４１を備えると共に、当該一対の脚部４１の夫々に長尺状部材１０を挿通可能な挿通孔４２を有して構成されている。そして、接着強度評価試験の際には、一対の挿通孔４２のうち、一方の挿通孔４２に、長尺状部材１０の両端部１０ａ、１０ｂの一方を挿通して係合すると共に、他方の挿通孔４２に、長尺状部材１０の両端部１０ａ、１０ｂの他方を挿通して係合する状態となる。
更に、当該係合牽引部材４０には、図１、２、３に示すように、牽引機構（図示せず）の牽引端部４５と連結される第１連結部材４３が溶接接続されている。当該第１連結部材４３は、複数の開口部４４を有しており、当該複数の開口部４４と牽引機構の牽引端部４５の開孔部との双方にボルトナット機構ＢＮのボルトが挿通され、第１連結部材４３と牽引端部４５とが締結される形態で、両者が連結されることとなる。 The elongated member 10 in the interposition arrangement posture exposes both ends 10a, 10b in the longitudinal direction to the outside from between the adhesion surface of the test piece S and the adherend 30, and is in the embodiment. Is provided with an engagement pulling member 40 that engages and pulls the both end portions 10a, 10b of the long member 10. When the description is added, the engagement pulling member 40 includes a pair of leg portions 41 and includes an insertion hole 42 through which the elongated member 10 can be inserted into each of the pair of leg portions 41. Yes. In the adhesive strength evaluation test, one of the pair of insertion holes 42 is inserted into and engaged with one of the two end portions 10a and 10b of the elongated member 10, and the other The other end 10a, 10b of the elongated member 10 is inserted into and engaged with the insertion hole 42.
Further, as shown in FIGS. 1, 2, and 3, a first connection member 43 that is connected to a pulling end portion 45 of a pulling mechanism (not shown) is welded to the engagement pulling member 40. The first connecting member 43 has a plurality of openings 44, and bolts of the bolt nut mechanism BN are inserted into both the plurality of openings 44 and the opening of the traction end 45 of the traction mechanism. The first connecting member 43 and the pulling end portion 45 are fastened together so that both are connected.

試験片Ｓとしての切出部材には、図１、２、３に示すように、複数の開口部２１を有する第２連結部材２０が溶接接続されており、当該第２連結部材２０は、固定機構（図示せず）の固定端部２２と連結されている。当該第２連結部材２０の複数の開口部２１と固定機構の固定端部２２の開口部との双方にボルトナット機構ＢＮのボルトが挿通され、第２連結部材２０と固定端部２２とが締結される形態で、両者が連結されることとなる。
以上の構成において、牽引機構が牽引端部４５を牽引する形態で、接着強度評価試験が実行されるのであるが、その具体的方法につき、以下に説明を加える。 As shown in FIGS. 1, 2, and 3, a second connecting member 20 having a plurality of openings 21 is welded to the cutout member as the test piece S, and the second connecting member 20 is fixed. It is connected to a fixed end 22 of a mechanism (not shown). Bolts of the bolt-nut mechanism BN are inserted into both the plurality of openings 21 of the second connecting member 20 and the fixed end 22 of the fixing mechanism, and the second connecting member 20 and the fixed end 22 are fastened. In this manner, both are connected.
In the above configuration, the adhesion strength evaluation test is executed in a form in which the traction mechanism pulls the traction end portion 45. The specific method will be described below.

当該実施形態に係る接着強度評価方法にあっては、試験片Ｓとしての切出部材の接着面に、当該接着面の中央領域を通る状態で、接着面の縁部の一端部から他端部まで連続して切り欠く連続切欠部Ｓａを形成する連続切欠形成工程を実行する。
その後、当該連続切欠形成工程にて形成された連続切欠部Ｓａに、長尺状部材１０を嵌入すると共に、長尺状部材１０の両端部１０ａ、１０ｂを試験片Ｓの接着面と被接着物３０との間から露出させた状態で、長尺状部材１０を、試験片Ｓの接着面と被接着物３０との間に、介在配置する介在配置工程を実行する。
その後、試験片Ｓの接着面と被接着物との間に接着剤３１を塗布した後、熱を加えることにより熱収縮する熱収縮部材（例えば、架橋ポリエチレン）から成る被接着物３０を試験片Ｓに対し、接着面とは異なる部位の少なくとも２点（当該実施形態にあっては、試験片Ｓとしての切出部材の長手方向での端面Ｓｂ）で固定する固定工程を実行した後、被接着物３０を例えば、２００℃程度の温度で、２０分程度加熱する加熱工程を実行する。当該加熱工程により、被接着物３０は、面積比で１０％程度収縮し、収縮後に残存収縮率を４０％程度残る程度とする。また、当該加熱工程の後、２４時間経過した時点で、試験片Ｓの接着面と被接着物３０との間の接着剤３１により接着する接着工程が完了する。
接着工程の完了後、固定工程にて固定された部位は、切り落とされる。
その後、図３に示すように、長尺状部材１０の両端部１０ａ、１０ｂに係合牽引部材４０を係合すると共に、試験片Ｓに溶接された第２連結部材２０と固定端部２２とを締結固定して、牽引機構により長尺状部材１０を牽引する形態で、試験片Ｓから被接着物３０を剥離させる剥離力を付与する剥離力付与工程を実行する。尚、当該実施形態に係る接着強度評価装置１００を用いることにより、剥離が一定以上進んだ後においては、図６に示すように、剥離角度αを、略一定角度に保つことができる。 In the adhesive strength evaluation method according to the embodiment, the adhesive surface of the cut-out member as the test piece S passes through the central region of the adhesive surface and passes from one end to the other end of the adhesive surface. The continuous notch formation process which forms the continuous notch part Sa continuously notched until is performed.
Then, while inserting the elongate member 10 in the continuous notch part Sa formed in the said continuous notch formation process, both the edge parts 10a and 10b of the elongate member 10 are attached to the adhesion surface of the test piece S, and an adherend. In a state where the long member 10 is exposed from the space 30, an interposition arrangement step of interposing the elongated member 10 between the adhesion surface of the test piece S and the adherend 30 is executed.
Then, after applying the adhesive 31 between the adhesion surface of the test piece S and the adherend, the adherend 30 made of a heat shrinkable member (for example, cross-linked polyethylene) that is thermally shrunk by applying heat is used as the test piece. After performing a fixing step for fixing to S at at least two points different from the bonding surface (in the present embodiment, the end surface Sb in the longitudinal direction of the cutting member S as the test piece S), For example, a heating process is performed in which the adhesive 30 is heated at a temperature of about 200 ° C. for about 20 minutes. By the heating step, the adherend 30 is contracted by about 10% in terms of area ratio, and the residual contraction rate remains approximately 40% after the contraction. In addition, when 24 hours have elapsed after the heating step, the bonding step of bonding with the adhesive 31 between the bonding surface of the test piece S and the adherend 30 is completed.
After completion of the bonding step, the portion fixed in the fixing step is cut off.
After that, as shown in FIG. 3, the engagement pulling member 40 is engaged with both end portions 10 a and 10 b of the long member 10, and the second connecting member 20 and the fixed end portion 22 welded to the test piece S are provided. And a peeling force applying step for applying a peeling force for peeling the adherend 30 from the test piece S in a form in which the long member 10 is pulled by the pulling mechanism. In addition, by using the adhesive strength evaluation apparatus 100 according to the embodiment, the peeling angle α can be maintained at a substantially constant angle as shown in FIG.

次に、これまで説明してきた接着強度評価装置１００、及び接着強度評価方法を用いて、行った接着強度評価試験に関し、図４のグラフ図に基づいて説明する。
図４に示す接着強度評価試験にあっては、試験温度が、２０℃、３０℃、５０℃において、Φ６００の管径の鋼管から切り出した試験片Ｓとしての切出部材を用いて、加える剥離力（せん断力）と剥離が開始されるまでの時間を、示している。尚、２０℃の場合の試験結果は、３０℃と５０℃の試験結果から推定した値である。また、グラフにおいて、点線は、予測値を示している。 Next, the adhesive strength evaluation test performed using the adhesive strength evaluation apparatus 100 and the adhesive strength evaluation method described so far will be described based on the graph of FIG.
In the adhesive strength evaluation test shown in FIG. 4, peeling is performed using a cutting member as a test piece S cut out from a steel pipe having a diameter of Φ600 at test temperatures of 20 ° C., 30 ° C., and 50 ° C. It shows the force (shear force) and the time until peeling begins. In addition, the test result in the case of 20 degreeC is the value estimated from the test result of 30 degreeC and 50 degreeC. In the graph, the dotted line indicates the predicted value.

上記試験結果より、被接着物３０にかかる剥離力（せん断力）が０．０２ｋｇ／ｃｍ2である場合、試験片Ｓの接着面に対する被接着物３０の接着性は、半永久的であると言え、５０年耐久応力は、０．２３５ｋｇ／ｃｍ2であり、安全率は、０．２３５／０．０２＝１２倍であるという試験結果が得られた。 From the above test results, it can be said that when the peel force (shearing force) applied to the adherend 30 is 0.02 kg / cm 2 , the adherence of the adherend 30 to the adhesion surface of the test piece S is semi-permanent. The 50-year endurance stress was 0.235 kg / cm 2 and the safety factor was 0.235 / 0.02 = 12 times.

〔別実施形態〕
（１）上記実施形態にあっては、試験片Ｓを固定すると共に、長尺状部材１０を、試験片Ｓ側から被接着物３０側へ向けた第１方向に牽引する構成例を示した。
しかしながら、本発明は、当該実施形態に限られず、例えば、長尺状部材１０を固定すると共に、試験片Ｓを、被接着物３０側から試験片Ｓ側へ向けた第２方向（図１、２で矢印Ｘの矢示と反対方向）へ牽引する構成を採用しても構わない。 [Another embodiment]
(1) In the above embodiment, the configuration example in which the test piece S is fixed and the long member 10 is pulled in the first direction from the test piece S side to the adherend 30 side is shown. .
However, the present invention is not limited to this embodiment. For example, the elongate member 10 is fixed and the test piece S is directed from the adherend 30 side to the test piece S side in the second direction (FIG. 1, 2 may be employed to pull in the direction opposite to the direction of arrow X.

（２）上記実施形態において、長尺状部材１０を第１方向は、試験片Ｓの接着面の法線方向としたが、必ずしも法線方向でなくても評価試験を実行することができる。 (2) In the said embodiment, although the elongate member 10 made the 1st direction the normal line direction of the adhesion surface of the test piece S, even if it is not necessarily a normal line direction, an evaluation test can be performed.

（３）当該実施形態にあっては、試験片Ｓは、埋設管としての鋼管から切り出した切出部材であるとしたが、別に、その他の形状の部材でも好適に評価できる。例えば、平板状の平板部材の平板表面を接着面とするものであっても構わない。 (3) In the present embodiment, the test piece S is a cut-out member cut out from a steel pipe as an embedded pipe, but other members having other shapes can be suitably evaluated. For example, the flat plate surface of a flat plate member may be an adhesive surface.

（４）上記実施形態にあっては、試験片Ｓは、その接着面に、連続切欠部Ｓａを備えるものとしたが、別に、このような連続切欠部Ｓａを有さない構成としても構わない。
即ち、接着強度評価方法において、試験片Ｓの接着面に対し連続切欠形成工程を実行しなくても構わない。 (4) In the above embodiment, the test piece S is provided with the continuous notch portion Sa on the bonding surface, but it may be configured not to have such a continuous notch portion Sa. .
That is, in the adhesive strength evaluation method, the continuous notch forming step may not be performed on the adhesion surface of the test piece S.

（５）上記実施形態にあっては、被接着物３０を熱を加えられることにより収縮する熱収縮部材（例えば、架橋ポリエチレン）である例を示し、接着試験評価方法において、試験片Ｓに対し被接着物３０を固定する固定工程と、加熱する加熱工程とを実行する例を示した。
しかしながら、被接着物３０は熱収縮部材としない場合であっても、本発明は好適に実施することができる。この場合、固定工程と、加熱工程とは実行しない。 (5) In the above embodiment, an example of a heat-shrinkable member (for example, cross-linked polyethylene) that shrinks when the object 30 is heated is applied to the test piece S in the adhesion test evaluation method. The example which performs the fixing process which fixes the to-be-adhered object 30, and the heating process which heats was shown.
However, even if the adherend 30 is not a heat-shrinkable member, the present invention can be suitably implemented. In this case, the fixing process and the heating process are not executed.

（６）上記実施形態にあっては、接着強度評価方法において、各工程の実行順序を記載したが、技術的に問題のない限り、各工程の順序は入れ替えても構わない。
例えば、介在配置工程の前に、固定工程を実行しても構わない。
また、上記実施形態にあっては、介在配置工程及び接着工程を当該記載の順に実行する例を示した。しかしながら、接着工程及び介在配置工程を当該記載の順に実行するように構成しても構わない。 (6) In the above embodiment, the execution order of each process is described in the adhesion strength evaluation method, but the order of each process may be changed as long as there is no technical problem.
For example, you may perform a fixing process before an interposition arrangement | positioning process.
Moreover, in the said embodiment, the example which performs an interposition arrangement | positioning process and an adhesion | attachment process in the said description was shown. However, you may comprise so that an adhesion | attachment process and an interposition arrangement | positioning process may be performed in the order of the said description.

（７）上記実施形態において、長尺状部材１０は、その長手方向に沿う形状が直線状の部材である例を示したが、別に直線形状でなくても構わない。 (7) In the above embodiment, the elongate member 10 is an example in which the shape along the longitudinal direction is a linear member, but it may not be a linear shape.

尚、上記実施形態（別実施形態を含む、以下同じ）で開示される構成は、矛盾が生じない限り、他の実施形態で開示される構成と組み合わせて適用することが可能であり、また、本明細書において開示された実施形態は例示であって、本発明の実施形態はこれに限定されず、本発明の目的を逸脱しない範囲内で適宜改変することが可能である。   The configuration disclosed in the above embodiment (including another embodiment, the same shall apply hereinafter) can be applied in combination with the configuration disclosed in the other embodiment, as long as no contradiction occurs. The embodiment disclosed in this specification is an exemplification, and the embodiment of the present invention is not limited to this. The embodiment can be appropriately modified without departing from the object of the present invention.

本発明の接着強度の評価方法、及び接着強度評価装置は、例えば、被接着物が外表面に接着剤により接着された埋設管が埋設されているような接着環境において、埋設管の外表面からの被接着物の剥離現象を比較的忠実に再現した接着強度評価方法、及び接着強度評価装置として、有効に利用可能である。   The adhesive strength evaluation method and the adhesive strength evaluation apparatus according to the present invention are, for example, from an outer surface of an embedded tube in an adhesive environment in which an embedded tube in which an object to be bonded is bonded to the outer surface by an adhesive is embedded. It can be effectively used as an adhesive strength evaluation method and an adhesive strength evaluation apparatus that reproduce the peeling phenomenon of the adherend relatively faithfully.

１０ ：長尺状部材
１０ａ、１０ｂ ：両端部
３０ ：被接着物
３１ ：接着剤
１００ ：接着強度評価装置
Ｓ ：試験片
Ｓａ ：連続切欠部 10: Long members 10a, 10b: Both end portions 30: Object to be bonded 31: Adhesive 100: Adhesive strength evaluation device S: Test piece Sa: Continuous notch

Claims (7)

試験片の接着面に被接着物を接着する接着剤の接着強度を評価する接着強度評価方法であって、
前記試験片の前記接着面と前記被接着物との間に、長手方向の両端部を前記試験片の前記接着面と前記被接着物との間から露出させた状態で、長尺状部材を介在配置させる介在配置工程と、
前記長尺状部材を介在配置させた状態で、前記試験片の前記接着面と前記被接着物との間を前記接着剤にて接着する接着工程とを、
前記介在配置工程及び前記接着工程を当該記載の順に実行した後、又は前記接着工程及び前記介在配置工程を当該記載の順に実行した後に、
前記試験片の前記接着面から前記被接着物を剥離するように、前記長尺状部材の前記両端部又は前記試験片の少なくとも何れか一方を牽引する形態で、前記試験片の前記接着面から前記被接着物を剥離させる剥離力を付与する剥離力付与工程を実行する接着強度評価方法。 An adhesive strength evaluation method for evaluating the adhesive strength of an adhesive that adheres an adherend to an adhesive surface of a test piece,
In a state where both end portions in the longitudinal direction are exposed between the adhesive surface of the test piece and the adherend between the adhesive surface of the test piece and the adherend, a long member is provided. An intervening arrangement step for interposing, and
In the state where the elongated member is interposed, an adhesion step of adhering between the adhesion surface of the test piece and the adherend with the adhesive,
After executing the interposition arrangement step and the adhesion step in the order of the description, or after executing the adhesion step and the interposition arrangement step in the order of the description,
In the form of pulling at least one of the both end portions of the elongated member or the test piece so as to peel the adherend from the adhesion surface of the test piece, from the adhesion surface of the test piece. The adhesion strength evaluation method which performs the peeling force provision process which provides the peeling force which peels the said to-be-adhered thing. 前記試験片の前記接着面を、前記接着面の中央領域を通る状態で、前記接着面の縁部の一端部から他端部まで連続して切り欠く連続切欠部を形成する連続切欠形成工程を、前記介在配置工程の前に実行すると共に、
前記介在配置工程において、前記長尺状部材を前記連続切欠部に嵌入する請求項１に記載の接着強度評価方法。 A continuous notch forming step of forming a continuous notch portion in which the adhesive surface of the test piece is continuously notched from one end to the other end of the edge of the adhesive surface in a state of passing through a central region of the adhesive surface; , Prior to the intervening placement step,
The adhesive strength evaluation method according to claim 1, wherein the elongated member is fitted into the continuous notch portion in the interposition arrangement step. 前記被接着物が熱を加えられることにより収縮する熱収縮部材であり、
当該被接着物を前記試験片に対し、前記接着面とは異なる部位の少なくとも２点で固定する固定工程と、
当該固定工程の後で前記被接着物を加熱する加熱工程とを、
前記接着工程にて前記試験片の前記接着面と前記被接着物との間に接着剤を塗布した後で、前記剥離力付与工程の前に実行する請求項１又は２に記載の接着強度評価方法。 A heat shrinkable member that shrinks by applying heat to the adherend,
A fixing step of fixing the object to be bonded to the test piece at at least two points different from the bonding surface;
A heating step of heating the adherend after the fixing step,
The adhesive strength evaluation according to claim 1 or 2, wherein an adhesive is applied between the adhesion surface of the test piece and the adherend in the adhesion step, and is performed before the peeling force application step. Method. 試験片の接着面に被接着物を接着する接着剤の接着強度を評価する接着強度評価装置であって、
前記試験片の前記接着面へ前記被接着物を前記接着剤により接着した接着状態で、前記試験片の前記接着面と前記被接着物との間に介在配置可能で、且つ介在配置された介在配置姿勢でその両端部を前記試験片の前記接着面と前記被接着物との間から外部へ露出可能な長尺状部材を備え、
前記接着状態で、前記長尺状部材が前記介在配置姿勢にあるときに、前記試験片の前記接着面から前記被接着物を剥離するように、前記長尺状部材の前記両端部又は前記試験片の少なくとも何れか一方を牽引する形態で、前記試験片の前記接着面から前記被接着物を剥離させる剥離力を付与可能に構成されている接着強度評価装置。 An adhesive strength evaluation apparatus for evaluating the adhesive strength of an adhesive that adheres an object to be bonded to the adhesive surface of a test piece,
In an adhesive state in which the adherend is bonded to the adhesive surface of the test piece with the adhesive, the interposer can be disposed between the adhesive surface of the test piece and the adherend, and the interposition is disposed. A long member capable of exposing both ends of the test piece to the outside from between the adhesion surface of the test piece and the adherend in an arrangement posture,
In the bonded state, when the elongated member is in the interposition arrangement posture, the both ends of the elongated member or the test are peeled off from the adhesion surface of the test piece. An adhesive strength evaluation apparatus configured to be capable of applying a peeling force for peeling off the adherend from the adhesive surface of the test piece in a form in which at least one of the pieces is pulled. 前記試験片の前記接着面は、前記接着面の中央領域を通る状態で、前記接着面の縁部の一端部から他端部まで連続して切り欠かれた連続切欠部が形成されたものであり、
前記長尺状部材の前記介在配置姿勢は、前記長尺状部材が前記連続切欠部に嵌入された姿勢である請求項４に記載の接着強度評価装置。 The adhesive surface of the test piece is formed with a continuous notch that is continuously cut from one end to the other end of the edge of the adhesive surface in a state of passing through a central region of the adhesive surface. Yes,
The adhesive strength evaluation apparatus according to claim 4, wherein the interposition posture of the long member is a posture in which the long member is inserted into the continuous cutout portion. 前記試験片は、中空円筒状の管を管軸方向に直交する直交方向に沿って輪切りした輪切部材から、管周方向の一部を切り出した切出部材であり、
前記試験片の前記接着面は、前記管の外表面を形成していた面の一部としての前記切出部材の表面である請求項４又は５に記載の接着強度評価装置。 The test piece is a cut-out member obtained by cutting out a part in the pipe circumferential direction from a ring-cut member obtained by cutting a hollow cylindrical tube in a direction orthogonal to the pipe axis direction.
The adhesive strength evaluation apparatus according to claim 4 or 5, wherein the adhesive surface of the test piece is a surface of the cut-out member as a part of a surface that formed the outer surface of the tube. 前記長尺状部材の前記介在配置姿勢は、前記長尺状部材の長手方向を、前記切出部材における前記管での管軸方向に沿わせた姿勢である請求項６に記載の接着強度評価装置。   The adhesive strength evaluation according to claim 6, wherein the interposition arrangement posture of the long member is a posture in which a longitudinal direction of the long member is aligned with a tube axis direction of the tube in the cutting member. apparatus.
JP2015219788A 2015-11-09 2015-11-09 Adhesive strength evaluation method and adhesive strength evaluation device Pending JP2017090213A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109765177A (en) * 2019-03-14 2019-05-17 华中农业大学 A kind of paddy field soil sticks force measuring instrument
CN112798426A (en) * 2020-12-24 2021-05-14 中国飞行试验研究院 Airplane wing surface tension and compression bidirectional loading device and using method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109765177A (en) * 2019-03-14 2019-05-17 华中农业大学 A kind of paddy field soil sticks force measuring instrument
CN109765177B (en) * 2019-03-14 2022-06-28 华中农业大学 Paddy field soil adhesion measuring instrument
CN112798426A (en) * 2020-12-24 2021-05-14 中国飞行试验研究院 Airplane wing surface tension and compression bidirectional loading device and using method thereof

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