JP2013124967A - Cell for measuring gas permeability of resin foam, gas permeability measuring apparatus and gas permeability measuring method - Google Patents

Cell for measuring gas permeability of resin foam, gas permeability measuring apparatus and gas permeability measuring method Download PDF

Info

Publication number
JP2013124967A
JP2013124967A JP2011274463A JP2011274463A JP2013124967A JP 2013124967 A JP2013124967 A JP 2013124967A JP 2011274463 A JP2011274463 A JP 2011274463A JP 2011274463 A JP2011274463 A JP 2011274463A JP 2013124967 A JP2013124967 A JP 2013124967A
Authority
JP
Japan
Prior art keywords
gas
resin foam
measurement
measuring
carrier gas
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2011274463A
Other languages
Japanese (ja)
Inventor
Tatsuya Yabuno
達哉 藪野
Takayuki Sasaki
孝之 佐々木
Shigeo Hatano
茂夫 波田野
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AGC Inc
Original Assignee
Asahi Glass Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Asahi Glass Co Ltd filed Critical Asahi Glass Co Ltd
Priority to JP2011274463A priority Critical patent/JP2013124967A/en
Publication of JP2013124967A publication Critical patent/JP2013124967A/en
Pending legal-status Critical Current

Links

Images

Landscapes

  • Sampling And Sample Adjustment (AREA)

Abstract

PROBLEM TO BE SOLVED: To measure gas permeability of resin foam.SOLUTION: A gas permeability measuring cell 1 includes: a lower cell body 10 forming a carrier gas circulation part 18 in its inside and opening a communication surface 20 on its upper surface 10a; an upper cell body 12 having an upper wall 12a and a sidewall 12b, and when setting the upper cell body 12 on the lower cell body 10, forming a measuring gas circulation part 26 by the upper wall 12a, the sidewall 12b, the upper surface 10a of the lower cell body 10 and the communication surface 20; and a first abutting plate 14 and a second abutting plate 16 between which resin foam 50 is held in the measuring gas circulation part 26. The gas permeability measuring cell 1 is configured so that a part of supplied measuring gas is transmitted through the resin foam 50 and exhausted from a carrier gas outlet 24 through the communication surface 20 and the carrier gas circulation part 18, and the residual measuring gas is passed through a gap between the second abutting plate 16 and the resin foam 50 and exhausted from the measuring gas outlet 32. A gas permeability measuring apparatus including the gas permeability measuring cell 1 and a gas permeability measuring method using the gas permeability measuring apparatus are also provided.

Description

本発明は、樹脂発泡体のガス透過性測定用セル、ガス透過性測定装置およびガス透過性測定方法に関する。   The present invention relates to a cell for measuring gas permeability of a resin foam, a gas permeability measuring apparatus, and a gas permeability measuring method.

樹脂フィルムや樹脂シート等の薄い樹脂成形体のガス透過性を測定する装置としては、樹脂成形体の一方の面側に測定ガスを、他方の面側にキャリアガスを流通させ、前記樹脂成形体を透過してキャリアガスと共に排出される測定ガスを検出するガス透過性測定装置が使用されている（非特許文献１）。   As an apparatus for measuring the gas permeability of a thin resin molded body such as a resin film or a resin sheet, the resin molded body is made to circulate a measurement gas on one side of the resin molded body and a carrier gas on the other side. A gas permeability measuring device that detects a measurement gas that passes through the gas and is discharged together with the carrier gas is used (Non-Patent Document 1).

具体的には、例えば、下方が開口した状態の第１セル（測定ガス流通部）が形成された上部セル体と、上方が開口した状態の第２セル（キャリアガス流通部）が形成された下部セル体とを備え、前記上部セル体と下部セル体の間に樹脂フィルムや樹脂シート等の樹脂成形体を気密に挟み込み、上部セル体の第１セル内に測定ガスを流し、下部セル体の第２セル内にキャリアガスを流すことで、樹脂成形体を透過した測定ガスが第２セルに至り、キャリアガスと共に排出される構成になっているガス透過性測定用セルを用いた装置が知られている（例えば、特許文献１）。   Specifically, for example, an upper cell body in which a first cell (measurement gas circulation part) having a lower opening is formed and a second cell (carrier gas circulation part) having an upper opening is formed. A lower cell body, and a resin molded body such as a resin film or a resin sheet is hermetically sandwiched between the upper cell body and the lower cell body, and a measurement gas is allowed to flow into the first cell of the upper cell body. An apparatus using a gas permeability measurement cell configured such that the measurement gas that has permeated through the resin molded body reaches the second cell by flowing the carrier gas into the second cell, and is discharged together with the carrier gas. Known (for example, Patent Document 1).

しかし、特許文献１に記載のようなガス透過性測定用セルは、樹脂フィルムや樹脂シート等の厚みの薄い樹脂成形体のガス透過性の測定には使用できるものの、硬質フォーム等の樹脂発泡体のように厚みのある試料のガス透過性の測定には適していない。また、たとえ樹脂発泡体と樹脂フィルムや樹脂シートが同じ種類の樹脂で形成されていたとしても、形状が異なるために両者のガス透過性の相関性は低いので、樹脂フィルムや樹脂シートのガス透過性から、厚みのある樹脂発泡体のガス透過性を推測することは困難である。   However, the gas permeability measuring cell as described in Patent Document 1 can be used for measuring the gas permeability of a thin resin molded body such as a resin film or a resin sheet, but it is a resin foam such as a rigid foam. Thus, it is not suitable for measuring the gas permeability of a thick sample. Even if the resin foam and the resin film or resin sheet are made of the same type of resin, the gas permeability of the resin film or resin sheet is low because the gas permeability of the two is low due to the difference in shape. Therefore, it is difficult to estimate the gas permeability of a thick resin foam.

実用新案登録第３０９６６０９号公報Utility Model Registration No. 3096609

ＪＩＳ Ｋ ７１２６−２（プラスチック−フィルム及びシート−ガス透過度試験方法：等圧法）JIS K 716-2 (Plastic-film and sheet-gas permeability test method: isobaric method)

本発明は、樹脂発泡体のガス透過性の測定を可能にするガス透過性測定用セルおよびガス透過性測定装置、ならびにそれらを用いた樹脂発泡体のガス透過性測定方法の提供を目的とする。   An object of the present invention is to provide a gas permeability measuring cell and a gas permeability measuring apparatus that enable measurement of gas permeability of a resin foam, and a gas permeability measuring method of a resin foam using the same. .

本発明の樹脂発泡体のガス透過性測定用セルは、第１端面と、第１端面と反対側の第２端面と、これらの端面を繋ぐ周面とを備える樹脂発泡体のガス透過性を測定するためのガス透過性測定用セルであって、
内部に、連通面を介して互いに連通する測定ガス流通部とキャリアガス流通部とを備え、
測定ガス流通部は、樹脂発泡体を、第１端面を連通面側、第２端面を連通面の反対側として収容するスペースを有し、連通面と反対側の周壁に、測定ガスが供給される測定ガス供給口を、その他の周壁に測定ガス排出口を備え、
測定ガス流通部の連通面側には、連通面を閉塞せずに樹脂発泡体の第１端面に当接する第１当接面が形成され、
測定ガス流通部の連通面と反対側には、測定ガス供給口を閉塞せずに樹脂発泡体の第２端面に当接する第２当接面が形成され、
キャリアガス流通部は、キャリアガスが供給されるキャリアガス供給口とキャリアガス排出口とを備え、
第１当接面と第２当接面との間に樹脂発泡体を挟んだ状態で測定ガス供給口から測定ガスを供給した際、測定ガスの一部は樹脂発泡体を通過して連通面を通してキャリアガス流通部に至り、キャリアガスと共にキャリアガス排出口から排出され、
測定ガスの残部は、樹脂発泡体を通過せずに少なくとも樹脂発泡体の第２端面と第２当接面との間隙を通過して測定ガス排出口から排出されるように構成されている。 The cell for measuring gas permeability of a resin foam according to the present invention has the gas permeability of a resin foam comprising a first end face, a second end face opposite to the first end face, and a peripheral face connecting these end faces. A gas permeability measuring cell for measuring,
Inside, provided with a measurement gas circulation part and a carrier gas circulation part that communicate with each other through a communication surface,
The measurement gas flow part has a space for accommodating the resin foam with the first end face as the communication surface side and the second end face as the opposite side of the communication surface, and the measurement gas is supplied to the peripheral wall opposite to the communication surface. A measuring gas supply port and a measuring gas discharge port on the other peripheral wall,
A first contact surface that contacts the first end surface of the resin foam without closing the communication surface is formed on the communication surface side of the measurement gas flow part,
A second abutting surface that abuts the second end surface of the resin foam without closing the measuring gas supply port is formed on the side opposite to the communication surface of the measuring gas flow part,
The carrier gas distribution unit includes a carrier gas supply port to which carrier gas is supplied and a carrier gas discharge port.
When the measurement gas is supplied from the measurement gas supply port with the resin foam sandwiched between the first contact surface and the second contact surface, a part of the measurement gas passes through the resin foam and communicates with the communication surface. To the carrier gas distribution department, and is discharged from the carrier gas outlet along with the carrier gas,
The remaining portion of the measurement gas is configured to pass through at least the gap between the second end surface of the resin foam and the second contact surface without passing through the resin foam and be discharged from the measurement gas discharge port.

本発明の樹脂発泡体のガス透過性測定用セルでは、第１当接面と第２当接面との間に樹脂発泡体を挟んだ際、第１当接面と第２当接面の少なくとも一方は樹脂発泡体を押圧するように付勢されることが好ましい。
また、連通面にメッシュ部が設けられていることが好ましい。 In the cell for measuring the gas permeability of the resin foam of the present invention, when the resin foam is sandwiched between the first contact surface and the second contact surface, the first contact surface and the second contact surface At least one is preferably urged to press the resin foam.
Moreover, it is preferable that the mesh part is provided in the communicating surface.

また、本発明の樹脂発泡体のガス透過性測定用セルは、第１端面と、第１端面と反対側の第２端面と、これらの端面を繋ぐ周面とを備える樹脂発泡体のガス透過性を測定するためのガス透過性測定用セルであって、
上面が平坦な下部セル体と、下部セル体上に気密に設置される上部セル体と、樹脂発泡体の第１端面に当接させる第１当接板と、樹脂発泡体の第２端面に当接させる第２当接板と、を備え、
下部セル体は、キャリアガス流通部が内部に形成され、キャリアガス流通部に通じる連通面が上面に開口し、キャリアガス流通部にキャリアガスを供給するキャリアガス供給口と、キャリアガス流通部からキャリアガスを排出するキャリアガス排出口が上壁以外の周壁に形成され、
上部セル体は、上壁および上壁から下方に延びる側壁を有し、それら上壁および側壁と下部セル体の上面および連通面に囲まれる領域が、樹脂発泡体、第１当接板および第２当接板を収容する測定ガス流通部とされ、測定ガス流通部に測定ガスを供給する測定ガス供給口が上部セル体の上壁に、測定ガス流通部から測定ガスを排出する測定ガス排出口が側壁に形成され、
第１当接板は、周辺が連通面の周辺より大きい枠体の中央にメッシュ部が設けられてなり、メッシュ部が連通面を覆うように下部セル体の上面に配置され、枠体の上面が樹脂発泡体の第１端面に当接する第１当接面とされ、
第２当接板は、貫通孔を有する枠体からなり、下面が樹脂発泡体の第２端面に当接する第２当接面とされ、
樹脂発泡体を第１当接面と第２当接面との間に挟んで測定ガス流通部に収容した際、第２当接板は貫通孔が測定ガス供給口と重なるように配置され、
かつ、樹脂発泡体の第２端面に当接された第２当接板と上部セル体の上壁との間がシール部材でシールされ、該シール部材により第２当接板が樹脂発泡体を押圧するように付勢され、
第１当接板と第２当接板との間に樹脂発泡体を挟んだ状態で測定ガス供給口から測定ガスを供給した際、測定ガスの一部は樹脂発泡体を通過して連通面を通してキャリアガス流通部に至り、キャリアガスと共にキャリアガス排出口から排出され、
測定ガスの残部は、樹脂発泡体を通過せずに樹脂発泡体の第２端面と第２当接面との間隙を通過して測定ガス排出口から排出される。 The cell for measuring gas permeability of a resin foam according to the present invention includes a first end face, a second end face opposite to the first end face, and a peripheral face connecting these end faces. A gas permeability measuring cell for measuring the property,
A lower cell body having a flat upper surface, an upper cell body that is airtightly installed on the lower cell body, a first contact plate that contacts the first end surface of the resin foam, and a second end surface of the resin foam A second abutting plate to abut,
The lower cell body has a carrier gas circulation part formed therein, a communication surface communicating with the carrier gas circulation part is opened on the upper surface, a carrier gas supply port for supplying the carrier gas to the carrier gas circulation part, and a carrier gas circulation part A carrier gas discharge port for discharging the carrier gas is formed on the peripheral wall other than the upper wall,
The upper cell body has an upper wall and side walls extending downward from the upper wall, and a region surrounded by the upper wall and the side wall and the upper surface and the communication surface of the lower cell body is formed of the resin foam, the first contact plate, and the first wall. 2 A measurement gas circulation section for accommodating a contact plate, and a measurement gas supply port for supplying a measurement gas to the measurement gas circulation section on the upper wall of the upper cell body discharges a measurement gas from the measurement gas circulation section. An outlet is formed in the sidewall,
The first contact plate is provided with a mesh portion at the center of the frame body whose periphery is larger than the periphery of the communication surface, and is disposed on the upper surface of the lower cell body so as to cover the communication surface. Is a first contact surface that contacts the first end surface of the resin foam,
The second contact plate is made of a frame body having a through hole, and the lower surface is a second contact surface that contacts the second end surface of the resin foam,
When the resin foam is sandwiched between the first contact surface and the second contact surface and accommodated in the measurement gas flow part, the second contact plate is disposed so that the through hole overlaps the measurement gas supply port,
And between the 2nd contact plate contacted with the 2nd end surface of the resin foam and the upper wall of the upper cell body is sealed with a seal member, and the second contact plate causes the resin foam to be sealed by the seal member. Urged to press,
When the measurement gas is supplied from the measurement gas supply port with the resin foam sandwiched between the first contact plate and the second contact plate, a part of the measurement gas passes through the resin foam and communicates with the communication surface. To the carrier gas distribution department, and is discharged from the carrier gas outlet along with the carrier gas,
The remaining portion of the measurement gas passes through the gap between the second end surface of the resin foam and the second contact surface without passing through the resin foam, and is discharged from the measurement gas discharge port.

本発明の樹脂発泡体のガス透過性測定装置は、本発明のガス透過性測定用セルと、ガス透過性測定用セルの測定ガス供給口に測定ガスを供給する測定ガス供給手段と、ガス透過性測定用セルのキャリアガス供給口にキャリアガスを供給するキャリアガス供給手段と、ガス透過性測定用セルのキャリアガス排出口から排出されるガス中の測定ガスの量を測定するガス透過量測定部と、を有する装置である。   The resin foam gas permeability measuring device of the present invention comprises a gas permeability measuring cell of the present invention, a measuring gas supply means for supplying a measuring gas to a measuring gas supply port of the gas permeability measuring cell, Gas permeation measurement for measuring the amount of measurement gas in the gas discharged from the carrier gas discharge port of the gas permeability measurement cell and carrier gas supply means for supplying the carrier gas to the carrier gas supply port of the gas measurement cell A device having a unit.

本発明の樹脂発泡体のガス透過性測定方法は、第１端面と、第１端面と反対側の第２端面と、これらの端面を繋ぐ周面とを備える樹脂発泡体を透過する測定ガスの量を測定する方法であって、
樹脂発泡体の周面が、測定ガスを透過しない材料からなる封止層で覆われてなり、
樹脂発泡体の第１端面側と第２端面側が等圧となる条件で、樹脂発泡体の第２端面側に測定ガスを供給するとともに第１端面側にキャリアガスを供給し、第１端面から流出する測定ガスの量を測定する方法である。 The method for measuring gas permeability of a resin foam according to the present invention includes a measurement gas that permeates a resin foam that includes a first end face, a second end face opposite to the first end face, and a peripheral face connecting these end faces. A method for measuring quantities,
The peripheral surface of the resin foam is covered with a sealing layer made of a material that does not transmit the measurement gas,
The measurement gas is supplied to the second end face side of the resin foam and the carrier gas is supplied to the first end face side under the condition that the first end face side and the second end face side of the resin foam are at the same pressure. This is a method for measuring the amount of measurement gas flowing out.

また、本発明の樹脂発泡体のガス透過性測定方法は、本発明のガス透過性測定装置を用い、
封止層で周面を覆った樹脂発泡体を、第１端面を連通面側、第２端面を連通面の反対側として、測定ガス流通部内で第１当接面と第２当接面との間に挟み、かつ、樹脂発泡体の第１端面と第１当接面との間の気密を保つように、樹脂発泡体における第１端面の外周部分に封止材を塗布した状態で測定ガスおよびキャリアガスを供給することが好ましい。
また、測定ガスは、窒素ガスであることが好ましい。
また、封止層を形成する材料は、エポキシ樹脂であることが好ましい。 Moreover, the gas permeability measuring method of the resin foam of the present invention uses the gas permeability measuring apparatus of the present invention,
A resin foam having a peripheral surface covered with a sealing layer is formed with a first contact surface and a second contact surface in the measurement gas flow section with the first end surface as the communication surface side and the second end surface as the opposite side of the communication surface. Measured with a sealing material applied to the outer peripheral portion of the first end surface of the resin foam so as to maintain airtightness between the first end surface and the first contact surface of the resin foam. It is preferable to supply a gas and a carrier gas.
The measurement gas is preferably nitrogen gas.
Moreover, it is preferable that the material which forms a sealing layer is an epoxy resin.

本発明のガス透過性測定用セルを用いれば、樹脂発泡体のガス透過性を測定することが可能となる。
また、本発明のガス透過性測定装置は、本発明のガス透過性測定用セルを備えているので、樹脂発泡体のガス透過性を測定することができる。
また、本発明の樹脂発泡体のガス透過性測定方法によれば、樹脂発泡体のガス透過性を測定することができる。 If the gas permeability measuring cell of the present invention is used, the gas permeability of the resin foam can be measured.
Moreover, since the gas permeability measuring apparatus of this invention is equipped with the cell for gas permeability measurement of this invention, it can measure the gas permeability of a resin foam.
Moreover, according to the gas permeability measuring method of the resin foam of the present invention, the gas permeability of the resin foam can be measured.

本発明の第１実施形態に係るガス透過性測定用セルを分解した様子を示した斜視図である。It is the perspective view which showed a mode that the cell for gas permeability measurement which concerns on 1st Embodiment of this invention was decomposed | disassembled. 本発明の第１実施形態に係るガス透過性測定用セルの斜視図である。It is a perspective view of the cell for gas permeability measurement concerning a 1st embodiment of the present invention. 図２のガス透過性測定用セルを直線Ｉ−Ｉ’で切断したときの断面図である。FIG. 3 is a cross-sectional view when the gas permeability measuring cell of FIG. 2 is cut along a straight line I-I ′. 本発明の第２実施形態に係るガス透過性測定用セルを示した断面図である。It is sectional drawing which showed the cell for gas permeability measurement which concerns on 2nd Embodiment of this invention. 本発明の第３実施形態に係るガス透過性測定用セルを示した断面図である。It is sectional drawing which showed the cell for gas permeability measurement which concerns on 3rd Embodiment of this invention. 本発明の第４実施形態に係るガス透過性測定用セルを示した断面図である。It is sectional drawing which showed the cell for gas permeability measurement which concerns on 4th Embodiment of this invention. 本発明のガス透過性測定装置を示した概略構成図である。It is the schematic block diagram which showed the gas-permeability measuring apparatus of this invention.

＜第１実施形態＞
［樹脂発泡体のガス透過性測定装置］
本発明の第１実施形態に係る樹脂発泡体のガス透過性測定装置１００（以下、「測定装置１００」という。）は、図７に示すように、ガス透過性測定用セル１（以下、「測定用セル１」という。）と、測定用セル１に測定ガスを供給する測定ガス供給手段５と、測定用セル１にキャリアガスを供給するキャリアガス供給手段６と、測定用セル１から排出されるガス中の測定ガスの量を測定するガス透過量測定部７と、を有する。
測定用セル１と測定ガス供給手段５は配管７１で接続されており、測定用セル１とキャリアガス供給手段６は配管７２で接続されており、測定用セル１とガス透過量測定部７が配管７３で接続されている。
配管７１〜７３には、必要に応じて流量計、流量調整弁等を設けてもよい。 <First Embodiment>
[Gas permeability measuring device for resin foam]
As shown in FIG. 7, the resin foam gas permeability measuring device 100 (hereinafter referred to as “measuring device 100”) according to the first embodiment of the present invention includes a gas permeability measuring cell 1 (hereinafter, “ Measurement cell 1 ”), measurement gas supply means 5 for supplying measurement gas to measurement cell 1, carrier gas supply means 6 for supplying carrier gas to measurement cell 1, and discharge from measurement cell 1 A gas permeation amount measurement unit 7 for measuring the amount of measurement gas in the gas to be measured.
The measurement cell 1 and the measurement gas supply means 5 are connected by a pipe 71, the measurement cell 1 and the carrier gas supply means 6 are connected by a pipe 72, and the measurement cell 1 and the gas permeation amount measuring unit 7 are connected to each other. They are connected by a pipe 73.
The pipes 71 to 73 may be provided with a flow meter, a flow rate adjusting valve, or the like as necessary.

（ガス透過性測定用セル）
以下、第１実施形態に係る測定用セル１を図１〜３に基づいて詳細に説明する。
測定用セル１は、図３に示すような、第１端面５２と、第１端面５２と反対側の第２端面５４と、これらの端面を繋ぐ周面５６とを備える樹脂発泡体５０のガス透過性を測定するための測定用セルである。また、測定用セル１は、樹脂発泡体５０の周面５６を、測定ガスが透過しない材料からなる封止層５８で覆った状態でガス透過性を測定するためのものである。樹脂発泡体５０の詳細については後述する。
測定用セル１は、図１〜３に示すように、上面１０ａが平坦な下部セル体１０と、下部セル体１０上に気密に設置される上部セル体１２と、樹脂発泡体５０の第１端面５２に当接させる第１当接板１４と、樹脂発泡体５０の第２端面５４に当接させる第２当接板１６とを備える。 (Cell for measuring gas permeability)
Hereinafter, the measurement cell 1 according to the first embodiment will be described in detail with reference to FIGS.
As shown in FIG. 3, the measurement cell 1 includes a first end face 52, a second end face 54 opposite to the first end face 52, and a gas of a resin foam 50 that includes a peripheral face 56 that connects these end faces. It is a measuring cell for measuring permeability. The measuring cell 1 is for measuring gas permeability in a state where the peripheral surface 56 of the resin foam 50 is covered with a sealing layer 58 made of a material that does not allow measurement gas to pass through. Details of the resin foam 50 will be described later.
As shown in FIGS. 1 to 3, the measurement cell 1 includes a lower cell body 10 having a flat upper surface 10 a, an upper cell body 12 that is airtightly installed on the lower cell body 10, and a first resin foam 50. A first contact plate 14 that contacts the end surface 52 and a second contact plate 16 that contacts the second end surface 54 of the resin foam 50 are provided.

下部セル体１０は、図１および図３に示すように、略円柱状とされ、内部に略円錐台状のキャリアガス流通部１８が形成されている。キャリアガス流通部１８の上面は下部セル体１０の上面１０ａと同一面において開口する円形の連通面２０とされている。また、キャリアガス流通部１８にキャリアガスを供給するキャリアガス供給口２２と、キャリアガス流通部１８からキャリアガスを排出するキャリアガス排出口２４が下面側に形成されている。また、下部セル体１０の下面から下方に突出し、キャリアガス供給口２２とキャリアガス排出口２４にそれぞれ通じる配管を取り付けるための第１突出部１１ａおよび第２突出部１１ｂが設けられている。
また、図１に示すように、下部セル体１０の上面１０ａには、上部セル体１２を設置するための複数の取付孔１０ｂが形成されている。 As shown in FIGS. 1 and 3, the lower cell body 10 has a substantially cylindrical shape, and a carrier gas circulation portion 18 having a substantially truncated cone shape is formed therein. The upper surface of the carrier gas circulation part 18 is a circular communication surface 20 that opens in the same plane as the upper surface 10 a of the lower cell body 10. Further, a carrier gas supply port 22 for supplying the carrier gas to the carrier gas circulation unit 18 and a carrier gas discharge port 24 for discharging the carrier gas from the carrier gas circulation unit 18 are formed on the lower surface side. Moreover, the 1st protrusion part 11a and the 2nd protrusion part 11b for attaching the piping which protrudes below from the lower surface of the lower cell body 10, and leads to the carrier gas supply port 22 and the carrier gas discharge port 24 are provided.
As shown in FIG. 1, a plurality of mounting holes 10 b for installing the upper cell body 12 are formed on the upper surface 10 a of the lower cell body 10.

下部セル体１０の材質は、特に限定されず、例えば、ステンレス、鉄、アルミニウム等が挙げられる。
下部セル体１０の大きさは特に限定されず、測定する樹脂発泡体の寸法に応じて適宜設定すればよい。
キャリアガス供給口２２の内径、およびキャリアガス排出口２４の内径は、キャリアガスをスムーズに供給および排出することができる範囲であれば特に限定されない。 The material of the lower cell body 10 is not particularly limited, and examples thereof include stainless steel, iron, and aluminum.
The magnitude | size of the lower cell body 10 is not specifically limited, What is necessary is just to set suitably according to the dimension of the resin foam to measure.
The inner diameter of the carrier gas supply port 22 and the inner diameter of the carrier gas discharge port 24 are not particularly limited as long as the carrier gas can be smoothly supplied and discharged.

連通面２０の大きさは、第１当接板１４よりも小さく、上面１０ａ上に第１当接板１４を設置できる大きさであればよい。連通面２０が大きいほど、測定ガス流通部２６内に設置された樹脂発泡体５０を通過した測定ガスがよりスムーズに連通面２０を通じてキャリアガス流通部１８に至るようになるが、大きすぎると第１当接板１４を安定して設置し難くなる。この例では、連通面２０の直径は、５０〜１００ｍｍが好ましい。   The size of the communication surface 20 may be smaller than the first contact plate 14 so long as the first contact plate 14 can be installed on the upper surface 10a. The larger the communication surface 20 is, the more smoothly the measurement gas that has passed through the resin foam 50 installed in the measurement gas circulation portion 26 reaches the carrier gas circulation portion 18 through the communication surface 20. 1 It becomes difficult to install the contact plate 14 stably. In this example, the communication surface 20 preferably has a diameter of 50 to 100 mm.

上部セル体１２は、図１〜３に示すように、円形の上壁１２ａと、上壁１２ａの周縁部から下方に延びる円筒状の側壁１２ｂと、側壁１２ｂの下端部から外側に延びる円環状のフランジ部１２ｃとを有する。上部セル体１２を下部セル体１０上に設置したときに、上部セル体１２の上壁１２ａおよび側壁１２ｂと、下部セル体１０の上面１０ａおよび連通面２０に囲まれる領域が、樹脂発泡体５０、第１当接板１４および第２当接板１６が収容され、測定ガスが流通される測定ガス流通部２６とされる。   As shown in FIGS. 1 to 3, the upper cell body 12 includes a circular upper wall 12a, a cylindrical side wall 12b extending downward from the peripheral edge of the upper wall 12a, and an annular shape extending outward from the lower end of the side wall 12b. Flange portion 12c. When the upper cell body 12 is installed on the lower cell body 10, the region surrounded by the upper wall 12 a and the side wall 12 b of the upper cell body 12 and the upper surface 10 a and the communication surface 20 of the lower cell body 10 is the resin foam 50. The first abutment plate 14 and the second abutment plate 16 are accommodated, and a measurement gas circulation portion 26 is provided through which measurement gas is circulated.

フランジ部１２ｃには、図３に示すように、下部セル体１０の取付孔１０ｂの位置に対応するように複数の取付孔１２ｄが形成されている。また、フランジ部１２ｃの取付孔１２ｄよりも側壁１２ｂ側には、その下面側に第１のシール部材３８を取り付けるための溝部１２ｅが円環状に形成されている。フランジ部１２ｃの溝部１２ｅに第１のシール部材３８を取り付け、下部セル体１０の取付孔１０ｂと上部セル体１２の取付孔１２ｄの位置を合わせてネジ２８によって固定することで、下部セル体１０と上部セル体１２の間が第１のシール部材３８でシールされ、下部セル体１０上に上部セル体１２を気密に設置されるようになっている。
第１のシール部材３８は、下部セル体１０と上部セル体１２の気密が保たれる部材であればよく、Ｏリング、断面が四角形のガスケットおよびパッキン等を用いることができる。材質としては、合成ゴム、天然ゴム、シリコン樹脂、フッ素樹脂、変成シリコーン、ウレタン樹脂等を用いることができる。以降のシール部材についても同様である。 As shown in FIG. 3, a plurality of attachment holes 12 d are formed in the flange portion 12 c so as to correspond to the positions of the attachment holes 10 b of the lower cell body 10. Further, a groove 12e for attaching the first seal member 38 is formed in an annular shape on the lower surface side of the flange 12c on the side of the side wall 12b from the attachment hole 12d. The first seal member 38 is attached to the groove portion 12e of the flange portion 12c, and the positions of the attachment holes 10b of the lower cell body 10 and the attachment holes 12d of the upper cell body 12 are aligned and fixed with screws 28, whereby the lower cell body 10 is fixed. The upper cell body 12 is sealed with a first seal member 38, and the upper cell body 12 is installed on the lower cell body 10 in an airtight manner.
The first seal member 38 may be any member that maintains the hermeticity of the lower cell body 10 and the upper cell body 12, and may be an O-ring, a gasket having a square cross section, a packing, or the like. As a material, synthetic rubber, natural rubber, silicon resin, fluororesin, modified silicone, urethane resin, or the like can be used. The same applies to the subsequent sealing members.

また、上部セル体１２の上壁１２ａには、測定ガス流通部２６に測定ガスを供給する測定ガス供給口３０が形成されている。また、上部セル体１２の側壁１２ｂには、測定ガス流通部２６から測定ガスの一部を排出する測定ガス排出口３２が形成されている。また、上壁１２ａには、上方に突出し、測定ガス供給口３０と通じる配管を接続するための第１突出部１３ａが設けられている。側壁１２ｂには、外側に突出し、測定ガス排出口３２と通じる配管を接続するための第２突出部１３ｂが設けられている。   In addition, a measurement gas supply port 30 for supplying a measurement gas to the measurement gas circulation part 26 is formed in the upper wall 12a of the upper cell body 12. In addition, a measurement gas discharge port 32 for discharging a part of the measurement gas from the measurement gas circulation part 26 is formed in the side wall 12b of the upper cell body 12. Further, the upper wall 12 a is provided with a first protrusion 13 a that protrudes upward and connects a pipe that communicates with the measurement gas supply port 30. The side wall 12b is provided with a second protrusion 13b that protrudes outward and connects a pipe that communicates with the measurement gas discharge port 32.

また、上部セル体１２の上壁１２ａの下面側には、測定ガス供給口３０を囲うように、第２のシール部材４０を取り付けるための溝部１２ｆが円環状に形成されている。溝部１２ｆは、後述する第２当接板１６の貫通孔１６ａよりも大きく、すなわち貫通孔１６ａと測定ガス供給口３０が重なるように測定ガス流通部２６内に第２当接板１６を設置した際に、溝部１２ｆが第２当接板１６の貫通孔１６ａを囲むように形成されている。
溝部１２ｆに第２のシール部材４０を取り付け、第２当接板１６の上面に第２のシール部材４０が密着するように第２当接板１６が設置されることで、第２当接板１６と上部セル体１２の上壁１２ａの間が第２のシール部材４０でシールされる。 Further, a groove 12f for attaching the second seal member 40 is formed in an annular shape on the lower surface side of the upper wall 12a of the upper cell body 12 so as to surround the measurement gas supply port 30. The groove portion 12f is larger than a through hole 16a of the second contact plate 16 described later, that is, the second contact plate 16 is installed in the measurement gas circulation portion 26 so that the through hole 16a and the measurement gas supply port 30 overlap each other. At this time, the groove 12 f is formed so as to surround the through hole 16 a of the second contact plate 16.
By attaching the second seal member 40 to the groove 12f and installing the second contact plate 16 so that the second seal member 40 is in close contact with the upper surface of the second contact plate 16, the second contact plate 16 and the upper wall 12a of the upper cell body 12 are sealed by the second seal member 40.

上部セル体１２の材質は、特に限定されず、例えば、下部セル体１０で挙げたものと同じものが挙げられる。
上部セル体１２の大きさは、測定する樹脂発泡体の寸法に適した測定ガス流通部２６を形成できるように適宜設定すればよい。
この例の測定ガス流通部２６は、水平方向の直径が５０〜２００ｍｍであることが好ましく、８０〜１５０ｍｍであることがより好ましい。
また、測定ガス流通部２６の高さが、２０〜８０ｍｍであることが好ましく、３０〜６０ｍｍであることがより好ましい。測定ガス流通部２６の高さが前記範囲であれば、省エネルギー基準における断熱性能の地域区分ＩＶでのＥランク断熱材（厚み３５ｍｍ）や、Ｄランク断熱材（厚み４５ｍｍ）に適用する樹脂発泡体等の測定に好適である。
また、測定ガス供給口３０の内径、および測定ガス排出口３２の内径は、測定ガスをスムーズに供給および排出することができる範囲であれば特に限定されない。 The material of the upper cell body 12 is not specifically limited, For example, the same thing as what was mentioned by the lower cell body 10 is mentioned.
What is necessary is just to set the magnitude | size of the upper cell body 12 suitably so that the measurement gas distribution | circulation part 26 suitable for the dimension of the resin foam to measure can be formed.
In this example, the measurement gas circulation part 26 preferably has a horizontal diameter of 50 to 200 mm, and more preferably 80 to 150 mm.
Moreover, it is preferable that the height of the measurement gas distribution | circulation part 26 is 20-80 mm, and it is more preferable that it is 30-60 mm. If the height of the measurement gas circulation part 26 is within the above range, the resin foam applied to the E rank heat insulating material (thickness 35 mm) and the D rank heat insulating material (thickness 45 mm) in the region classification IV of the heat insulating performance in the energy saving standard. It is suitable for the measurement.
Further, the inner diameter of the measurement gas supply port 30 and the inner diameter of the measurement gas discharge port 32 are not particularly limited as long as the measurement gas can be supplied and discharged smoothly.

第１当接板１４は、図１に示すように、周辺が連通面２０の周辺より大きい円形の枠体１４ａの中央に円形のメッシュ部１４ｂが設けられたものである。第１当接板１４は、メッシュ部１４ｂが連通面２０を覆うように下部セル体１０の上面１０ａ上に配置され、枠体１４ａの上面が樹脂発泡体５０の第１端面５２に当接する第１当接面１４ｃとされる。
下部セル体１０の上面１０ａに第１当接板１４を設置し、連通面２０がメッシュ部１４ｂで覆われることで、測定ガス流通部２６内に設置した樹脂発泡体５０から細かい破片が生じても、該破片が連通面２０を通じてキャリアガス流通部１８側に侵入することが抑制される。そのため、測定用セル１と接続する後述のガス透過量測定部等が該破片によって損傷することを容易に抑制できる。 As shown in FIG. 1, the first abutment plate 14 has a circular mesh portion 14 b provided at the center of a circular frame body 14 a whose periphery is larger than the periphery of the communication surface 20. The first contact plate 14 is disposed on the upper surface 10 a of the lower cell body 10 so that the mesh portion 14 b covers the communication surface 20, and the upper surface of the frame body 14 a contacts the first end surface 52 of the resin foam 50. 1 contact surface 14c.
When the first contact plate 14 is installed on the upper surface 10a of the lower cell body 10 and the communication surface 20 is covered with the mesh portion 14b, fine debris is generated from the resin foam 50 installed in the measurement gas circulation portion 26. In addition, the debris is prevented from entering the carrier gas circulation part 18 side through the communication surface 20. Therefore, it is possible to easily suppress damage to the gas permeation amount measuring unit, which will be described later, connected to the measuring cell 1 due to the fragments.

枠体１４ａの材質は特に限定されず、例えば、ステンレス、鉄、アルミニウム等が挙げられる。
メッシュ部１４ｂの材質としては、測定ガスが通過でき、樹脂発泡体の破片が通過できないものであればよく、例えば、ステンレス、鉄、アルミニウム等が挙げられる。なかでも、耐久性および耐錆性の点から、ステンレスが好ましい。
メッシュ部１４ｂの大きさは、連通面２０の大きさと同じであることが好ましい。メッシュ部１４ｂが大きいほど、測定ガス流通部２６内に設置された樹脂発泡体５０を通過した測定ガスが、よりスムーズにメッシュ部１４ｂおよび連通面２０を通じてキャリアガス流通部１８に至るようになる。 The material of the frame 14a is not specifically limited, For example, stainless steel, iron, aluminum etc. are mentioned.
The material of the mesh portion 14b may be any material as long as the measurement gas can pass and the resin foam fragments cannot pass, and examples thereof include stainless steel, iron, and aluminum. Of these, stainless steel is preferable from the viewpoint of durability and rust resistance.
The size of the mesh portion 14 b is preferably the same as the size of the communication surface 20. The larger the mesh part 14b, the more smoothly the measurement gas that has passed through the resin foam 50 installed in the measurement gas circulation part 26 reaches the carrier gas circulation part 18 through the mesh part 14b and the communication surface 20.

メッシュ部１４ｂの目開きは、１．００〜０．０１ｍｍが好ましく、０．５０〜０．０５ｍｍがより好ましい。メッシュ部１４ｂの目開きが大きいほど、測定ガス流通部２６内に設置された樹脂発泡体５０を通過した測定ガスが、よりスムーズにメッシュ部１４ｂおよび連通面２０を通じてキャリアガス流通部１８に至るようになる。メッシュ部１４ｂの目開きが小さいほど、樹脂発泡体５０から生じた細かい破片がキャリアガス流通部１８側に侵入することを容易に抑制できる。   The mesh portion 14b has an opening of preferably 1.00 to 0.01 mm, and more preferably 0.50 to 0.05 mm. The larger the mesh portion 14 b is, the more smoothly the measurement gas that has passed through the resin foam 50 installed in the measurement gas circulation portion 26 reaches the carrier gas circulation portion 18 through the mesh portion 14 b and the communication surface 20. become. As the mesh portion 14b has a smaller mesh opening, it is possible to easily prevent fine fragments generated from the resin foam 50 from entering the carrier gas circulation portion 18 side.

第２当接板１６は、円形の貫通孔１６ａを有する円形の枠体からなり、下面が樹脂発泡体５０の第２端面５４に当接する第２当接面１６ｂとされる。
第２当接板１６は、樹脂発泡体５０を第１当接板１４の第１当接面１４ｃと第２当接板１６の第２当接面１６ｂの間に挟んで測定ガス流通部２６内に収容した際に、貫通孔１６ａが測定ガス供給口３０と重なるように配置される。すなわち、測定ガス供給口３０から供給される測定ガスは、第２当接板１６の貫通孔１６ａを通じて樹脂発泡体５０の第２端面５４に導かれる。 The second contact plate 16 is formed of a circular frame having a circular through hole 16 a, and the lower surface is a second contact surface 16 b that contacts the second end surface 54 of the resin foam 50.
The second contact plate 16 includes the measurement gas flow section 26 with the resin foam 50 sandwiched between the first contact surface 14 c of the first contact plate 14 and the second contact surface 16 b of the second contact plate 16. The through-hole 16a is disposed so as to overlap the measurement gas supply port 30 when housed therein. That is, the measurement gas supplied from the measurement gas supply port 30 is guided to the second end face 54 of the resin foam 50 through the through hole 16 a of the second contact plate 16.

第２当接板１６の材質は、特に限定されず、例えば、下部セル体１０で挙げたものと同じものが挙げられる。
第２当接板１６の大きさは、測定ガス流通部２６内に設置でき、且つ測定する樹脂発泡体５０の第２端面５４よりも大きくなるように設定する。この例の第２当接板１６の直径は、８０〜１００ｍｍが好ましい。 The material of the 2nd contact board 16 is not specifically limited, For example, the same thing as what was mentioned by the lower cell body 10 is mentioned.
The size of the second contact plate 16 is set so as to be larger than the second end face 54 of the resin foam 50 to be measured, which can be installed in the measurement gas flow part 26. The diameter of the second contact plate 16 in this example is preferably 80 to 100 mm.

第２当接板１６の厚みは、測定ガス流通部２６内に設置された樹脂発泡体５０の第２端面５４に第２当接面１６ｂを当接させ、下部セル体１０上に上部セル体１２を設置した際に、第２当接板１６の上面が第２のシール部材４０に密着し、上部セル体１２の上壁１２ａと第２当接板１６の間が第２のシール部材４０でシールされる厚みであればよく、測定ガス流通部２６の高さ、および樹脂発泡体５０の厚みに応じて適宜設定すればよい。この例の第２当接板１６の厚みは、１．０〜１０ｍｍが好ましい。   The thickness of the second abutment plate 16 is such that the second abutment surface 16b abuts on the second end surface 54 of the resin foam 50 installed in the measurement gas flow portion 26, and the upper cell body is placed on the lower cell body 10. 12 is installed, the upper surface of the second contact plate 16 is in close contact with the second seal member 40, and the space between the upper wall 12a of the upper cell body 12 and the second contact plate 16 is the second seal member 40. May be set as appropriate according to the height of the measurement gas flow part 26 and the thickness of the resin foam 50. The thickness of the second contact plate 16 in this example is preferably 1.0 to 10 mm.

貫通孔１６ａの大きさは、測定する樹脂発泡体５０の第２端面５４よりも小さくなるようにすればよく、直径３０〜８０ｍｍが好ましい。貫通孔１６ａが大きいほど、測定ガス供給口３０から供給される測定ガスが樹脂発泡体５０の第２端面５４にスムーズに導かれやすくなり、貫通孔１６ａが小さいほど、樹脂発泡体５０上に第２当接板１６をより安定に設置できる。   The size of the through hole 16a may be made smaller than the second end face 54 of the resin foam 50 to be measured, and a diameter of 30 to 80 mm is preferable. As the through hole 16a is larger, the measurement gas supplied from the measurement gas supply port 30 is more easily guided to the second end surface 54 of the resin foam 50, and as the through hole 16a is smaller, the measurement gas is supplied onto the resin foam 50. 2 The contact plate 16 can be installed more stably.

以上説明した測定用セル１では、下部セル体１０上に上部セル体１２が設置されることで、連通面２０と反対側の周壁である上壁１２ａに測定ガス供給口３０を、その他の周壁である側壁１２ｂに測定ガス排出口３２を備えた測定ガス流通部２６と、キャリアガス供給口２２およびキャリアガス排出口２４を供えたキャリアガス流通部１８とが、連通面２０を介して互いに連通するように内部に形成される。また、形成される測定ガス流通部２６は、樹脂発泡体５０を、第１端面５２を連通面２０側、第２端面５４を連通面２０の反対側として収容するスペースを有する。
また、測定ガス流通部２６の連通面２０側に第１当接板１４が設置されることで、メッシュ部１４ｂで連通面２０が閉塞されずに樹脂発泡体５０の第１端面５２に当接する第１当接面１４ｃが形成される。測定ガス流通部２６の連通面２０と反対側には、収容した樹脂発泡体５０上に貫通孔１６ａが形成された第２当接板１６が設置されることで、測定ガス供給口３０を閉塞せずに樹脂発泡体５０の第２端面５４に当接する第２当接面１６ｂが形成される。測定用セル１内での測定ガスの流れについては後述する。 In the measurement cell 1 described above, the upper cell body 12 is installed on the lower cell body 10, so that the measurement gas supply port 30 is provided on the upper wall 12a, which is the peripheral wall on the opposite side of the communication surface 20, and the other peripheral walls. The measurement gas circulation part 26 provided with the measurement gas discharge port 32 in the side wall 12b and the carrier gas circulation part 18 provided with the carrier gas supply port 22 and the carrier gas discharge port 24 communicate with each other via the communication surface 20. To be formed inside. In addition, the formed measurement gas circulation part 26 has a space for accommodating the resin foam 50 with the first end face 52 as the communication surface 20 side and the second end face 54 as the opposite side of the communication surface 20.
Further, the first contact plate 14 is installed on the communication surface 20 side of the measurement gas circulation unit 26, so that the communication surface 20 is not blocked by the mesh portion 14 b and contacts the first end surface 52 of the resin foam 50. A first contact surface 14c is formed. On the opposite side of the measurement gas flow part 26 from the communication surface 20, the measurement gas supply port 30 is closed by installing a second contact plate 16 having a through hole 16 a formed on the accommodated resin foam 50. A second contact surface 16b that contacts the second end surface 54 of the resin foam 50 is formed without the need. The flow of the measurement gas in the measurement cell 1 will be described later.

（測定ガス供給手段）
測定ガス供給手段５は、図７に示すように、配管７１を介して測定用セル１の測定ガス供給口３０と接続されている。
測定ガス供給手段５は、測定用セル１の測定ガス供給口３０に測定ガスを供給できるものであればよく、例えば、ガスボンベ等が挙げられる。 (Measurement gas supply means)
As shown in FIG. 7, the measurement gas supply unit 5 is connected to the measurement gas supply port 30 of the measurement cell 1 via a pipe 71.
The measurement gas supply means 5 only needs to be able to supply the measurement gas to the measurement gas supply port 30 of the measurement cell 1, and examples thereof include a gas cylinder.

（キャリアガス供給手段）
キャリアガス供給手段６は、配管７２を介して測定用セル１のキャリアガス供給口２２と接続されている。
キャリアガス供給手段６は、測定用セル１のキャリアガス供給口２２にキャリアガスを供給できるものであればよく、例えば、ガスボンベ等が挙げられる。 (Carrier gas supply means)
The carrier gas supply means 6 is connected to the carrier gas supply port 22 of the measurement cell 1 through a pipe 72.
The carrier gas supply means 6 only needs to be capable of supplying a carrier gas to the carrier gas supply port 22 of the measurement cell 1, and examples thereof include a gas cylinder.

（ガス透過量測定部）
ガス透過量測定部７は、配管７３を介してキャリアガス排出口２４と接続されている。
ガス透過量測定部７は、測定用セル１のキャリアガス排出口２４から排出されてきたガス中の測定ガスの量を測定できるものであればよく、例えば、ガスクロマトグラフィー等が挙げられる。 (Gas permeation measuring unit)
The gas permeation amount measurement unit 7 is connected to the carrier gas discharge port 24 via a pipe 73.
The gas permeation amount measurement unit 7 may be any device that can measure the amount of the measurement gas in the gas discharged from the carrier gas discharge port 24 of the measurement cell 1, and examples thereof include gas chromatography.

［樹脂発泡体のガス透過性測定方法］
第１実施形態に係る樹脂発泡体のガス透過性測定方法では、図３に示すように、第１端面５２と、第１端面５２と反対側の第２端面５４と、それらの端面を繋ぐ周面５６とを備える円柱状の樹脂発泡体５０を使用する。
樹脂発泡体５０としては、例えば、ポリウレタンフォーム、ポリスチレンフォーム、ポリエチレンフォーム、ポリプロピレンフォーム、エチレン・酢酸ビニル（ＥＶＡ）架橋発泡体、ポリエチレンテレフタレート（ＰＥＴ）樹脂発泡体、フェノールフォーム、シリコーンフォーム、ポリ塩化ビニルフォーム、ユリアフォーム、アクリルフォーム、ポリイミドフォーム、エチレンプロピレンジエンゴム（ＥＰＤＭ）フォーム等が挙げられる。 [Method for measuring gas permeability of resin foam]
In the gas permeability measuring method of the resin foam according to the first embodiment, as shown in FIG. 3, the first end face 52, the second end face 54 opposite to the first end face 52, and the periphery connecting these end faces. A cylindrical resin foam 50 having a surface 56 is used.
Examples of the resin foam 50 include polyurethane foam, polystyrene foam, polyethylene foam, polypropylene foam, ethylene / vinyl acetate (EVA) crosslinked foam, polyethylene terephthalate (PET) resin foam, phenol foam, silicone foam, and polyvinyl chloride. Examples thereof include foam, urea foam, acrylic foam, polyimide foam, and ethylene propylene diene rubber (EPDM) foam.

ガス透過性を測定する際は、まず樹脂発泡体５０の周面５６を、測定ガスが透過しない材料からなる封止層５８で覆う。樹脂発泡体５０の周面５６を封止層５８で覆うことで、樹脂発泡体５０の周面５６を測定ガスが通過することが防止され、樹脂発泡体５０を第２端面５４から第１端面５２へと通過する測定ガスの量を測定できる。
封止層５８を形成する材料としては、測定ガスを透過しない材料であればよい。具体的には、例えば、エポキシ樹脂、シリコーン系樹脂、ウレタン系樹脂等が挙げられる。なかでも、表面塗布が容易であり密着性が高いことから、エポキシ樹脂が好ましい。 When measuring gas permeability, first, the peripheral surface 56 of the resin foam 50 is covered with a sealing layer 58 made of a material that does not allow measurement gas to pass therethrough. By covering the peripheral surface 56 of the resin foam 50 with the sealing layer 58, the measurement gas is prevented from passing through the peripheral surface 56 of the resin foam 50, and the resin foam 50 is moved from the second end surface 54 to the first end surface. The amount of measurement gas passing to 52 can be measured.
The material for forming the sealing layer 58 may be any material that does not transmit the measurement gas. Specifically, for example, epoxy resin, silicone resin, urethane resin, and the like can be given. Among these, an epoxy resin is preferable because it can be easily applied to the surface and has high adhesion.

封止層５８は、例えば、前記した材料を含むコーティング剤を調製し、該コーティング剤を樹脂発泡体５０の周面５６にコーティングして乾燥することで形成できる。前記コーティング剤を調製するための溶媒としては、前記した材料を溶解または分散でき、かつ樹脂発泡体を損なわない各種の有機溶剤等が挙げられる。
封止層５８の厚みは、樹脂発泡体５０の周面５６から測定ガスが透過しない充分な厚みであればよく、１〜５ｍｍが好ましい。 The sealing layer 58 can be formed, for example, by preparing a coating agent containing the above-described material, coating the peripheral surface 56 of the resin foam 50 with the coating agent, and drying. Examples of the solvent for preparing the coating agent include various organic solvents that can dissolve or disperse the above-described materials and do not damage the resin foam.
The thickness of the sealing layer 58 should just be sufficient thickness which measurement gas does not permeate | transmit from the surrounding surface 56 of the resin foam 50, and 1-5 mm is preferable.

このように、ガス透過性の測定においては、測定ガスを透過しない材料からなる封止層５８で樹脂発泡体５０の周面５６を覆った状態とし、樹脂発泡体５０の第１端面５２側と第２端面５４側が等圧となる条件で、樹脂発泡体５０の第２端面５４側に測定ガスを供給するとともに第１端面５２側にキャリアガスを供給し、第１端面５２から流出する測定ガスの量を測定する。   Thus, in the measurement of gas permeability, the peripheral surface 56 of the resin foam 50 is covered with the sealing layer 58 made of a material that does not transmit the measurement gas, and the first end face 52 side of the resin foam 50 and A measurement gas that supplies a measurement gas to the second end surface 54 side of the resin foam 50 and supplies a carrier gas to the first end surface 52 side and flows out of the first end surface 52 under the condition that the second end surface 54 side has an equal pressure. Measure the amount of

具体的には、測定ガスが透過しない材料からなる封止層５８で周面５６を覆った樹脂発泡体５０を、第１端面５２を連通面２０側、第２端面５４を連通面２０と反対側として、第１当接板１４と第２当接板１６の間に挟むように測定ガス流通部２６内に設置する。
まず、図３に示すように、下部セル体１０の上面１０ａに、連通面２０とメッシュ部１４ｂが重なるように第１当接板１４を設置し、第１当接板１４上に、第１当接面１４ｃが第１端面５２に当接するように樹脂発泡体５０を設置する。そして、樹脂発泡体５０上に、樹脂発泡体５０の第２端面５４に第２当接面１６ｂが当接し、貫通孔１６ａが下部セル体１０上に設置する上部セル体１２の測定ガス供給口３０と重なるように第２当接板１６を設置する。 Specifically, the resin foam 50 in which the peripheral surface 56 is covered with a sealing layer 58 made of a material that does not allow measurement gas to pass through, the first end surface 52 opposite to the communication surface 20, and the second end surface 54 opposite to the communication surface 20. As a side, it is installed in the measurement gas flow part 26 so as to be sandwiched between the first contact plate 14 and the second contact plate 16.
First, as shown in FIG. 3, the first contact plate 14 is installed on the upper surface 10 a of the lower cell body 10 so that the communication surface 20 and the mesh portion 14 b overlap, and the first contact plate 14 is The resin foam 50 is installed so that the contact surface 14 c contacts the first end surface 52. Then, on the resin foam 50, the second contact surface 16b abuts on the second end surface 54 of the resin foam 50, and the measurement gas supply port of the upper cell body 12 in which the through hole 16a is installed on the lower cell body 10 is provided. The second contact plate 16 is installed so as to overlap with 30.

また、樹脂発泡体５０の第１端面５２と第１当接板１４の第１当接面１４ｃとの間の気密を保つように、樹脂発泡体５０の第１端面５２の外周部分に封止材３４を塗布する。本実施形態では、第１当接板１４と下部セル体１０の上面１０ａとの間の気密も同時に保つように、第１当接板１４の外周部分も同時に覆うように封止材３４を塗布する。このように、樹脂発泡体５０の第１端面５２の外周部分と、第１当接板１４の外周部分を封止材３４で封止して測定ガスとキャリアガスを供給することで、樹脂発泡体５０の周面５６の外側の測定ガスが、樹脂発泡体５０の第１端面５２と第１当接板１４の第１当接面１４ｃの間隙や、第１当接板１４の下面と下部セル体１０の上面１０ａの間隙を通過してキャリアガス流通部１８側に入り込むことを抑制することができる。
封止材３４としては、測定ガスが透過しないものであればよく、例えば、シリコーン系グリース、フッ素系グリース等が挙げられる。なかでも、塗布性が容易であり機密性が良い点から、シリコーン系グリースが好ましい。 Further, the outer peripheral portion of the first end surface 52 of the resin foam 50 is sealed so as to keep airtightness between the first end surface 52 of the resin foam 50 and the first contact surface 14c of the first contact plate 14. The material 34 is applied. In the present embodiment, the sealing material 34 is applied so as to simultaneously cover the outer peripheral portion of the first contact plate 14 so that the airtightness between the first contact plate 14 and the upper surface 10a of the lower cell body 10 is maintained at the same time. To do. As described above, the outer peripheral portion of the first end face 52 of the resin foam 50 and the outer peripheral portion of the first abutting plate 14 are sealed with the sealing material 34, and the measurement gas and the carrier gas are supplied. The measurement gas outside the peripheral surface 56 of the body 50 causes a gap between the first end surface 52 of the resin foam 50 and the first contact surface 14 c of the first contact plate 14, the lower surface and the lower portion of the first contact plate 14. It is possible to prevent the cell body 10 from passing through the gap on the upper surface 10a and entering the carrier gas circulation part 18 side.
The sealing material 34 may be any material that does not allow measurement gas to pass therethrough, and examples thereof include silicone grease and fluorine grease. Of these, silicone grease is preferred because it is easy to apply and has good confidentiality.

その後、第１当接板１４、樹脂発泡体５０および第２当接板１６を収容するように下部セル体１０上に上部セル体１２を設置してネジ２８により固定する。このとき、第２当接板１６は、第２のシール部材４０によって、樹脂発泡体５０を押圧するように付勢される。これにより、測定ガス流通部２６内において樹脂発泡体５０がよりしっかりと第１当接板１４の第１当接面１４ｃと第２当接板１６の第２当接面１６ｂに挟まれて固定される。   Thereafter, the upper cell body 12 is placed on the lower cell body 10 so as to accommodate the first contact plate 14, the resin foam 50 and the second contact plate 16, and fixed with screws 28. At this time, the second contact plate 16 is urged by the second seal member 40 so as to press the resin foam 50. As a result, the resin foam 50 is more firmly fixed between the first contact surface 14 c of the first contact plate 14 and the second contact surface 16 b of the second contact plate 16 in the measurement gas flow part 26. Is done.

このように測定用セル１の測定ガス流通部２６内に樹脂発泡体５０を設置した後、樹脂発泡体５０の第１端面５２側と第２端面５４側が等圧となる条件で、測定ガス供給手段５から測定ガス供給口３０に測定ガスを供給するとともに、キャリアガス供給手段６からキャリアガス供給口２２にキャリアガスを供給する。測定ガス供給口３０から測定ガス流通部２６内に供給された測定ガスは、第２当接板１６の貫通孔１６ａを通って収容した樹脂発泡体５０の第２端面５４へと導かれ、その一部が樹脂発泡体５０を通過し、連通面２０を通してキャリアガス流通部１８に至り、キャリアガスと共にキャリアガス排出口２４から排出される。そして、キャリアガス排出口２４から排出されたガス中の測定ガスの量をガス透過量測定部７で測定する。
一方、第２当接板１６の第２当接面１６ｂと樹脂発泡体５０の第２端面５４は接着されていないので、測定ガス供給口３０から供給された測定ガスの残部は、樹脂発泡体５０を通過せずに、樹脂発泡体５０の第２端面５４と第２当接板１６の第２当接面１６ｂの間隙を通過して測定ガス排出口３２から排出される。これにより、ガス透過性の測定時に、測定ガス流通部２６における樹脂発泡体５０の第２端面５４側の圧力と、キャリアガス流通部１８の圧力を容易に等圧にすることができる。 After the resin foam 50 is installed in the measurement gas flow part 26 of the measurement cell 1 in this way, the measurement gas is supplied under the condition that the first end face 52 side and the second end face 54 side of the resin foam 50 are at the same pressure. The measurement gas is supplied from the means 5 to the measurement gas supply port 30 and the carrier gas is supplied from the carrier gas supply means 6 to the carrier gas supply port 22. The measurement gas supplied from the measurement gas supply port 30 into the measurement gas circulation part 26 is guided to the second end face 54 of the resin foam 50 accommodated through the through hole 16a of the second contact plate 16, and A part passes through the resin foam 50, reaches the carrier gas circulation part 18 through the communication surface 20, and is discharged from the carrier gas discharge port 24 together with the carrier gas. The amount of measurement gas in the gas discharged from the carrier gas discharge port 24 is measured by the gas permeation amount measuring unit 7.
On the other hand, since the second contact surface 16b of the second contact plate 16 and the second end surface 54 of the resin foam 50 are not bonded, the remaining portion of the measurement gas supplied from the measurement gas supply port 30 is the resin foam. Without passing through 50, it passes through the gap between the second end surface 54 of the resin foam 50 and the second contact surface 16 b of the second contact plate 16 and is discharged from the measurement gas discharge port 32. Thereby, at the time of measurement of gas permeability, the pressure on the second end face 54 side of the resin foam 50 in the measurement gas circulation part 26 and the pressure of the carrier gas circulation part 18 can be easily made equal.

樹脂発泡体５０のガス透過性を測定する際の測定環境の温度、測定ガス流通部２６およびキャリアガス流通部１８内の圧力等の条件は、より高い精度で測定が行える点から、ＪＩＳ Ｋ ７１２６−２（プラスチック−フィルム及びシート−ガス透過度試験方法：等圧法）に準拠した条件を採用することが好ましい。具体的には、測定は２１〜２５℃の室内で行うことが好ましい。測定ガス流通部２６における樹脂発泡体５０の第２端面５４側の圧力とキャリアガス流通部１８内の圧力は、０〜３Ｐａの等圧が好ましく、共に大気圧であることが特に好ましい。   The conditions such as the temperature of the measurement environment when measuring the gas permeability of the resin foam 50, the pressure in the measurement gas circulation part 26 and the carrier gas circulation part 18 can be measured with higher accuracy, and JIS K 7126 can be measured. -2 (Plastic-film and sheet-gas permeability test method: isobaric method) is preferably adopted. Specifically, the measurement is preferably performed in a room at 21 to 25 ° C. The pressure on the second end face 54 side of the resin foam 50 in the measurement gas circulation part 26 and the pressure in the carrier gas circulation part 18 are preferably equal to 0 to 3 Pa, particularly preferably atmospheric pressure.

測定ガス流通部２６における樹脂発泡体５０の第２端面５４側の圧力とキャリアガス流通部１８の圧力は、測定ガス供給手段５から供給する測定ガスの流量と、キャリアガス供給手段６から供給するキャリアガスの流量によって調節できる。
測定ガス供給手段５から供給する測定ガスの流量は、５〜５０ｃｍ３／分が好ましく、１０〜４０ｃｍ３／分がより好ましい。
キャリアガス供給手段６から供給するキャリアガスの流量は、５〜５０ｃｍ３／分が好ましく、１０〜４０ｃｍ３／分がより好ましい。 The pressure on the second end face 54 side of the resin foam 50 and the pressure of the carrier gas circulation part 18 in the measurement gas circulation part 26 and the pressure of the measurement gas supplied from the measurement gas supply means 5 and the carrier gas supply means 6 are supplied. It can be adjusted by the flow rate of the carrier gas.
The flow rate of the sample gas supplied from the measuring gas supply means 5 is preferably 5 to 50 cm 3 / min, 10 to 40 cm 3 / min is more preferred.
Flow rate of the carrier gas supplied from the carrier gas supply means 6 is preferably 5 to 50 cm 3 / min, 10 to 40 cm 3 / min is more preferred.

測定に使用する測定ガスは、測定対象の樹脂発泡体の種類等に応じて適宜選択すればよく、例えば、窒素ガス、炭酸ガス、含フッ素ガス、炭化水素ガス等が挙げられる。
樹脂発泡体がウレタン樹脂発泡体の場合、データの安定性が良い点で窒素ガスが好ましい。
測定に使用するキャリアガスは、測定ガスの透過量の測定精度を損なわない範囲であれば特に限定されず、例えば、ヘリウム、アルゴン等が挙げられる。 The measurement gas used for the measurement may be appropriately selected according to the type of resin foam to be measured, and examples thereof include nitrogen gas, carbon dioxide gas, fluorine-containing gas, and hydrocarbon gas.
When the resin foam is a urethane resin foam, nitrogen gas is preferable in terms of good data stability.
The carrier gas used for measurement is not particularly limited as long as it does not impair the measurement accuracy of the permeation amount of the measurement gas, and examples thereof include helium and argon.

＜第２実施形態＞
［樹脂発泡体のガス透過性測定装置］
第２実施形態に係るガス透過性測定装置は、第１実施形態に係る測定装置１００における測定用セル１の代わりに、図４に例示したガス透過性測定用セル２（以下、「測定用セル２」という。）を備える以外は、測定装置１００と同じ装置である。 Second Embodiment
[Gas permeability measuring device for resin foam]
The gas permeability measuring apparatus according to the second embodiment is a gas permeability measuring cell 2 illustrated in FIG. 4 (hereinafter referred to as “measuring cell”) instead of the measuring cell 1 in the measuring apparatus 100 according to the first embodiment. It is the same apparatus as the measuring apparatus 100 except that it includes 2).

（ガス透過性測定用セル）
本発明の第２実施形態に係る測定用セル２を図４に基づいて説明する。なお、図４において図３と同じ部分は同符号を付して説明を省略する。
測定用セル２は、セル体６０と、蓋体６２と、第１当接板１４と、第２当接板１６と、を有している。
セル体６０は、略円柱状のセル本体部６０ａと、セル本体部６０ａの上面から上方に円筒状に延びる側壁６０ｂとを有している。セル本体部６０ａの内部には略円錐台状のキャリアガス流通部１８が形成されており、キャリアガス流通部１８の上面は、セル本体部６０ａにおける側壁６０ｂの内側の上面６０ｃと同一面において開口する連通面２０とされている。蓋体６２は、円形の上板部６２ａと、上板部６２ａの周縁部から下方に延びる円筒状の側部６２ｂとを有している。セル体６０の側壁６０ｂ上に蓋体６２が設置されることで、側壁６０ｂと、セル本体部６０ａの上面６０ｃおよび連通面２０と、蓋体６２の上板部６２ａに囲まれた領域が測定ガス流通部２６とされる。 (Cell for measuring gas permeability)
A measurement cell 2 according to a second embodiment of the present invention will be described with reference to FIG. In FIG. 4, the same parts as those in FIG.
The measurement cell 2 includes a cell body 60, a lid body 62, a first contact plate 14, and a second contact plate 16.
The cell body 60 has a substantially columnar cell body 60a and a side wall 60b extending in a cylindrical shape upward from the upper surface of the cell body 60a. A substantially frustoconical carrier gas circulation part 18 is formed inside the cell body part 60a, and the upper surface of the carrier gas circulation part 18 is open in the same plane as the upper surface 60c inside the side wall 60b in the cell body part 60a. It is set as the communication surface 20 which does. The lid 62 has a circular upper plate portion 62a and a cylindrical side portion 62b extending downward from the peripheral edge portion of the upper plate portion 62a. By installing the lid 62 on the side wall 60b of the cell body 60, the region surrounded by the side wall 60b, the upper surface 60c and the communication surface 20 of the cell body 60a, and the upper plate portion 62a of the lid 62 is measured. The gas distribution unit 26 is used.

セル体６０の側壁６０ｂには測定ガス排出口３２が形成されており、また側壁６０ｂから外側に突出し、測定ガス排出口３２と通じる配管を接続するための第２突出部６３ｂが設けられている。蓋体６２の上板部６２ａの中央には、測定ガス供給口３０が形成されており、また上方に突出し、測定ガス供給口３０と通じる配管を接続するための第１突出部６３ａが設けられている。
また、蓋体６２の上板部６２ａの下面側には、測定ガス供給口３０を囲うように溝部６２ｃが円環状に形成されており、溝部６２ｃのさらに外側に溝部６２ｄが円環状に形成されている。溝部６２ｃと溝部６２ｄは各々シール部材４２，４４が取り付けられるようになっており、セル体６０上に蓋体６２を設置した際に、蓋体６２の上板部６２ａと第２当接板１６の間、および蓋体６２の上板部６２ａとセル体６０の側壁６０ｂの上端面との間がそれぞれのシール部材４２，４４でシールされるようになっている。 A measurement gas discharge port 32 is formed in the side wall 60b of the cell body 60, and a second protrusion 63b is provided for connecting a pipe that protrudes outward from the side wall 60b and communicates with the measurement gas discharge port 32. . A measurement gas supply port 30 is formed at the center of the upper plate portion 62a of the lid 62, and a first protrusion 63a for connecting a pipe that protrudes upward and communicates with the measurement gas supply port 30 is provided. ing.
A groove 62c is formed in an annular shape so as to surround the measurement gas supply port 30 on the lower surface side of the upper plate portion 62a of the lid 62, and a groove 62d is formed in an annular shape further outside the groove 62c. ing. The groove portion 62c and the groove portion 62d are configured such that the seal members 42 and 44 are attached thereto, respectively. When the lid body 62 is installed on the cell body 60, the upper plate portion 62a and the second contact plate 16 of the lid body 62 are provided. And between the upper plate portion 62a of the lid body 62 and the upper end surface of the side wall 60b of the cell body 60 are sealed by the respective seal members 42 and 44.

第１当接板１４は、セル体６０におけるセル本体部６０ａの上面６０ｃに、メッシュ部１４ｂが連通面２０に重なるように設置される。第２当接板１６は、第１当接板１４の第１当接面１４ｃが第１端面５２に当接するように第１当接板１４上に設置された樹脂発泡体５０の第２端面５４に第２当接面１６ｂが当接するように設置される。
この測定用セル２は、測定用セル１における下部セル体１０と上部セル体１２が一体化し、上部セル体１２の上壁１２ａが蓋体として取り外し可能になったような形態の測定用セルである。つまり、測定用セル２でも測定用セル１と同様に、内部に、連通面２０を介して互いに連通するように測定ガス流通部２６とキャリアガス流通部１８が形成され、第１当接板１４によって第１当接面１４ｃが形成され、第２当接板１６によって第２当接面１６ｂが形成される。 The first contact plate 14 is installed on the upper surface 60 c of the cell body 60 a in the cell body 60 so that the mesh portion 14 b overlaps the communication surface 20. The second contact plate 16 is a second end surface of the resin foam 50 installed on the first contact plate 14 such that the first contact surface 14 c of the first contact plate 14 contacts the first end surface 52. 54 is installed such that the second contact surface 16b comes into contact therewith.
The measurement cell 2 is a measurement cell having a configuration in which the lower cell body 10 and the upper cell body 12 in the measurement cell 1 are integrated, and the upper wall 12a of the upper cell body 12 is removable as a lid. is there. That is, in the measurement cell 2, similarly to the measurement cell 1, the measurement gas circulation part 26 and the carrier gas circulation part 18 are formed inside so as to communicate with each other via the communication surface 20. Thus, the first contact surface 14 c is formed, and the second contact plate 16 forms the second contact surface 16 b.

（測定ガス供給手段、キャリアガス供給手段、ガス透過量測定部）
測定ガス供給手段５は、配管７１を介して測定用セル２の測定ガス供給口３０と接続される。キャリアガス供給手段６は、配管７２を介して測定用セル２のキャリアガス供給口２２と接続される。ガス透過量測定部７は、配管７３を介して測定用セル２のキャリアガス排出口２４と接続される。 (Measurement gas supply means, carrier gas supply means, gas permeation amount measurement unit)
The measurement gas supply means 5 is connected to the measurement gas supply port 30 of the measurement cell 2 via a pipe 71. The carrier gas supply means 6 is connected to the carrier gas supply port 22 of the measurement cell 2 via a pipe 72. The gas permeation amount measurement unit 7 is connected to the carrier gas discharge port 24 of the measurement cell 2 via a pipe 73.

［樹脂発泡体のガス透過性測定方法］
第２実施形態に係る樹脂発泡体のガス透過性測定方法では、第１実施形態に係る樹脂発泡体のガス透過性測定方法と同様に、測定ガスが透過しない材料からなる封止層５８で周面５６を覆った樹脂発泡体５０を使用する。
測定ガスが透過しない材料からなる封止層５８で周面５６を覆った樹脂発泡体５０を、第１端面５２を連通面２０側、第２端面５４を連通面２０と反対側として、第１当接板１４と第２当接板１６の間に挟むように測定ガス流通部２６内に設置する。
具体的には、図４に示すように、セル体６０における側壁６０ｂの内側の上面６０ｃに、連通面２０とメッシュ部１４ｂが重なるように第１当接板１４を設置し、第１当接板１４上に、第１当接面１４ｃが第１端面５２に当接するように樹脂発泡体５０を設置する。そして、樹脂発泡体５０上に、樹脂発泡体５０の第２端面５４に第２当接面１６ｂが当接し、貫通孔１６ａがセル体６０上に設置する蓋体６２の測定ガス供給口３０と重なるように第２当接板１６を設置する。 [Method for measuring gas permeability of resin foam]
In the method for measuring gas permeability of a resin foam according to the second embodiment, similarly to the method for measuring gas permeability of a resin foam according to the first embodiment, the resin foam is surrounded by a sealing layer 58 made of a material that does not allow measurement gas to permeate. A resin foam 50 covering the surface 56 is used.
The resin foam 50 in which the peripheral surface 56 is covered with a sealing layer 58 made of a material that does not allow the measurement gas to pass through the first end surface 52 on the communication surface 20 side and the second end surface 54 on the opposite side to the communication surface 20 is the first. It is installed in the measurement gas flow part 26 so as to be sandwiched between the contact plate 14 and the second contact plate 16.
Specifically, as shown in FIG. 4, the first contact plate 14 is installed on the upper surface 60 c inside the side wall 60 b of the cell body 60 so that the communication surface 20 and the mesh portion 14 b overlap each other. The resin foam 50 is installed on the plate 14 so that the first contact surface 14 c contacts the first end surface 52. Then, on the resin foam 50, the second contact surface 16 b abuts on the second end surface 54 of the resin foam 50, and the measurement gas supply port 30 of the lid 62 on which the through hole 16 a is installed on the cell body 60, The second contact plate 16 is installed so as to overlap.

また、第１実施形態に係る樹脂発泡体のガス透過性測定方法と同様に、樹脂発泡体５０の第１端面５２と第１当接板１４の第１当接面１４ｃとの間の気密を保ち、かつ第１当接板１４と下部セル体１０の上面１０ａとの間の気密も保つように、樹脂発泡体５０の第１端面５２の外周部分と、第１当接板１４の外周部分を覆うように封止材３４を塗布する。
その後、セル体６０の側壁６０ｂ上に蓋体６２を設置して固定する。このとき、第２当接板１６は、シール部材４２によって、樹脂発泡体５０を押圧するように付勢される。これにより、測定ガス流通部２６内において樹脂発泡体５０がよりしっかりと第１当接板１４の第１当接面１４ｃと第２当接板１６の第２当接面１６ｂに挟まれて固定される。
その後、第１実施形態に係る樹脂発泡体のガス透過性測定方法と同様に、樹脂発泡体５０の第１端面５２側と第２端面５４側が等圧となる条件で、測定ガス供給手段５から測定ガス供給口３０に測定ガスを供給するとともに、キャリアガス供給手段６からキャリアガス供給口２２にキャリアガスを供給し、樹脂発泡体５０の第１端面５２から流出してキャリアガス排出口２４から排出されたガス中の測定ガスの量をガス透過量測定部７で測定する。 Further, in the same manner as the gas permeability measurement method for the resin foam according to the first embodiment, the airtightness between the first end surface 52 of the resin foam 50 and the first contact surface 14c of the first contact plate 14 is set. The outer peripheral portion of the first end surface 52 of the resin foam 50 and the outer peripheral portion of the first abutting plate 14 so as to maintain the airtightness between the first abutting plate 14 and the upper surface 10a of the lower cell body 10. The sealing material 34 is applied so as to cover the surface.
Thereafter, the lid body 62 is installed and fixed on the side wall 60 b of the cell body 60. At this time, the second contact plate 16 is urged by the seal member 42 so as to press the resin foam 50. As a result, the resin foam 50 is more firmly fixed between the first contact surface 14 c of the first contact plate 14 and the second contact surface 16 b of the second contact plate 16 in the measurement gas flow part 26. Is done.
Thereafter, similarly to the method for measuring the gas permeability of the resin foam according to the first embodiment, from the measurement gas supply means 5 under the condition that the first end face 52 side and the second end face 54 side of the resin foam 50 are at equal pressure. While supplying the measurement gas to the measurement gas supply port 30, the carrier gas is supplied from the carrier gas supply means 6 to the carrier gas supply port 22, flows out from the first end surface 52 of the resin foam 50, and flows out of the carrier gas discharge port 24. The amount of measurement gas in the discharged gas is measured by the gas transmission amount measuring unit 7.

測定ガス供給口３０から測定ガス流通部２６内に供給された測定ガスは、第２当接板１６の貫通孔１６ａを通って収容した樹脂発泡体５０の第２端面５４へと導かれ、その一部が樹脂発泡体５０を通過し、連通面２０を通してキャリアガス流通部１８に至り、キャリアガスと共にキャリアガス排出口２４から排出される。また、測定ガス供給口３０から供給された測定ガスの残部は、樹脂発泡体５０を通過せずに、樹脂発泡体５０の第２端面５４と第２当接板１６の第２当接面１６ｂの間隙を通過して測定ガス排出口３２から排出される。   The measurement gas supplied from the measurement gas supply port 30 into the measurement gas circulation part 26 is guided to the second end face 54 of the resin foam 50 accommodated through the through hole 16a of the second contact plate 16, and A part passes through the resin foam 50, reaches the carrier gas circulation part 18 through the communication surface 20, and is discharged from the carrier gas discharge port 24 together with the carrier gas. Further, the remaining portion of the measurement gas supplied from the measurement gas supply port 30 does not pass through the resin foam 50, and the second end surface 54 of the resin foam 50 and the second contact surface 16 b of the second contact plate 16. And is discharged from the measurement gas discharge port 32.

＜第３実施形態＞
［樹脂発泡体のガス透過性測定装置］
第３実施形態に係るガス透過性測定装置は、第１実施形態に係る測定装置１００における測定用セル１の代わりに、図５に例示したガス透過性測定用セル３（以下、「測定用セル３」という。）を備える以外は、測定装置１００と同じ装置である。 <Third Embodiment>
[Gas permeability measuring device for resin foam]
The gas permeability measuring device according to the third embodiment is a gas permeability measuring cell 3 illustrated in FIG. 5 (hereinafter referred to as “measuring cell”) instead of the measuring cell 1 in the measuring device 100 according to the first embodiment. 3 ”) except that the measuring apparatus 100 is provided.

（ガス透過性測定用セル）
本発明の第３実施形態に係る測定用セル３を図５に基づいて説明する。なお、図５において図３と同じ部分は同符号を付して説明を省略する。
測定用セル３は、下部セル体１０と、下部セル体１０上に設置する上部セル体１２Ａと、第１当接板１４とを有している。
上部セル体１２Ａは、上壁１２ａの下面から、中央に測定ガス供給口３０と通じる円柱状の凹部１２ｈが形成されるように円環状に下方に突き出して形成された第２当接部１２ｇが設けられている以外は、測定用セル１の上部セル体１２と同じである。測定用セル３では、凹部１２ｈの周辺の第２当接部１２ｇの下面が、樹脂発泡体５０の第２端面５４に当接する第２当接面１２ｉとされる。
この測定用セル３は、測定用セル１における上部セル体１２の上壁１２ａと第１当接板１４が一体化したような形態の測定用セルである。つまり、測定用セル３でも測定用セル１と同様に、内部に、連通面２０を介して互いに連通するように測定ガス流通部２６とキャリアガス流通部１８が形成され、第１当接板１４によって第１当接面１４ｃが形成される。そして、上部セル体１２Ａの第２当接部１２ｇによって第２当接面１２ｉが形成される。 (Cell for measuring gas permeability)
A measurement cell 3 according to a third embodiment of the present invention will be described with reference to FIG. In FIG. 5, the same parts as those in FIG.
The measurement cell 3 includes a lower cell body 10, an upper cell body 12 </ b> A installed on the lower cell body 10, and a first contact plate 14.
The upper cell body 12A has a second contact portion 12g that protrudes downward in an annular shape so that a cylindrical recess 12h that communicates with the measurement gas supply port 30 is formed in the center from the lower surface of the upper wall 12a. Except for being provided, it is the same as the upper cell body 12 of the measuring cell 1. In the measurement cell 3, the lower surface of the second contact portion 12 g around the recess 12 h is a second contact surface 12 i that contacts the second end surface 54 of the resin foam 50.
The measurement cell 3 is a measurement cell having a form in which the upper wall 12a of the upper cell body 12 and the first contact plate 14 in the measurement cell 1 are integrated. That is, in the measurement cell 3, similarly to the measurement cell 1, the measurement gas circulation part 26 and the carrier gas circulation part 18 are formed inside so as to communicate with each other via the communication surface 20. Thus, the first contact surface 14c is formed. A second contact surface 12i is formed by the second contact portion 12g of the upper cell body 12A.

（測定ガス供給手段、キャリアガス供給手段、ガス透過量測定部）
測定ガス供給手段５は、配管７１を介して測定用セル３の測定ガス供給口３０と接続される。キャリアガス供給手段６は、配管７２を介して測定用セル３のキャリアガス供給口２２と接続される。ガス透過量測定部７は、配管７３を介して測定用セル３のキャリアガス排出口２４と接続される。 (Measurement gas supply means, carrier gas supply means, gas permeation amount measurement unit)
The measurement gas supply means 5 is connected to the measurement gas supply port 30 of the measurement cell 3 via a pipe 71. The carrier gas supply means 6 is connected to the carrier gas supply port 22 of the measurement cell 3 via a pipe 72. The gas permeation amount measurement unit 7 is connected to the carrier gas discharge port 24 of the measurement cell 3 through a pipe 73.

［樹脂発泡体のガス透過性測定方法］
第３実施形態に係る樹脂発泡体のガス透過性測定方法では、第１実施形態に係る樹脂発泡体のガス透過性測定方法と同様に、測定ガスが透過しない材料からなる封止層５８で周面５６を覆った樹脂発泡体５０を使用する。
測定ガスが透過しない材料からなる封止層５８で周面５６を覆った樹脂発泡体５０を、第１端面５２を連通面２０側、第２端面５４を連通面２０と反対側として、第１当接板１４と第２当接板１６の間に挟むように測定ガス流通部２６内に設置する。
具体的には、図５に示すように、下部セル体１０の上面１０ａに、連通面２０とメッシュ部１４ｂが重なるように第１当接板１４を設置し、第１当接板１４上に、第１当接面１４ｃが第１端面５２に当接するように樹脂発泡体５０を設置する。 [Method for measuring gas permeability of resin foam]
In the method for measuring gas permeability of a resin foam according to the third embodiment, similarly to the method for measuring gas permeability of a resin foam according to the first embodiment, the resin foam is surrounded by a sealing layer 58 made of a material that does not allow measurement gas to permeate. A resin foam 50 covering the surface 56 is used.
The resin foam 50 in which the peripheral surface 56 is covered with a sealing layer 58 made of a material that does not allow the measurement gas to pass through the first end surface 52 on the communication surface 20 side and the second end surface 54 on the opposite side to the communication surface 20 is the first. It is installed in the measurement gas flow part 26 so as to be sandwiched between the contact plate 14 and the second contact plate 16.
Specifically, as shown in FIG. 5, the first contact plate 14 is installed on the upper surface 10 a of the lower cell body 10 so that the communication surface 20 and the mesh portion 14 b overlap with each other. The resin foam 50 is installed so that the first contact surface 14 c contacts the first end surface 52.

その後、第１実施形態に係る樹脂発泡体のガス透過性測定方法と同様に、樹脂発泡体５０の第１端面５２と第１当接板１４の第１当接面１４ｃとの間の気密を保ち、かつ第１当接板１４と下部セル体１０の上面１０ａとの間の気密も保つように、樹脂発泡体５０の第１端面５２の外周部分と、第１当接板１４の外周部分を覆うように封止材３４を塗布する。次に、樹脂発泡体５０の第２端面５４に第２当接面１２ｉを当接させるように、下部セル体１０上に上部セル体１２Ａを設置して固定する。
その後、第１実施形態に係る樹脂発泡体のガス透過性測定方法と同様に、樹脂発泡体５０の第１端面５２側と第２端面５４側が等圧となる条件で、測定ガス供給手段５から測定ガス供給口３０に測定ガスを供給するとともに、キャリアガス供給手段６からキャリアガス供給口２２にキャリアガスを供給し、樹脂発泡体５０の第１端面５２から流出してキャリアガス排出口２４から排出されたガス中の測定ガスの量をガス透過量測定部７で測定する。 Thereafter, as in the gas permeability measurement method for the resin foam according to the first embodiment, the airtightness between the first end surface 52 of the resin foam 50 and the first contact surface 14c of the first contact plate 14 is set. The outer peripheral portion of the first end surface 52 of the resin foam 50 and the outer peripheral portion of the first abutting plate 14 so as to maintain the airtightness between the first abutting plate 14 and the upper surface 10a of the lower cell body 10. The sealing material 34 is applied so as to cover the surface. Next, the upper cell body 12A is installed and fixed on the lower cell body 10 so that the second contact surface 12i is brought into contact with the second end face 54 of the resin foam 50.
Thereafter, similarly to the method for measuring the gas permeability of the resin foam according to the first embodiment, from the measurement gas supply means 5 under the condition that the first end face 52 side and the second end face 54 side of the resin foam 50 are at equal pressure. While supplying the measurement gas to the measurement gas supply port 30, the carrier gas is supplied from the carrier gas supply means 6 to the carrier gas supply port 22, flows out from the first end surface 52 of the resin foam 50, and flows out of the carrier gas discharge port 24. The amount of measurement gas in the discharged gas is measured by the gas transmission amount measuring unit 7.

測定ガス供給口３０から測定ガス流通部２６内に供給された測定ガスは、第２当接部１２ｇの凹部１２ｈを通って収容した樹脂発泡体５０の第２端面５４へと導かれ、その一部が樹脂発泡体５０を通過し、連通面２０を通してキャリアガス流通部１８に至り、キャリアガスと共にキャリアガス排出口２４から排出される。また、測定ガス供給口３０から供給された測定ガスの残部は、樹脂発泡体５０を通過せずに、樹脂発泡体５０の第２端面５４と第２当接部１２ｇの第２当接面１２ｉの間隙を通過して測定ガス排出口３２から排出される。   The measurement gas supplied from the measurement gas supply port 30 into the measurement gas circulation part 26 is guided to the second end face 54 of the resin foam 50 accommodated through the recess 12h of the second contact part 12g. The part passes through the resin foam 50, reaches the carrier gas circulation part 18 through the communication surface 20, and is discharged from the carrier gas discharge port 24 together with the carrier gas. Further, the remaining portion of the measurement gas supplied from the measurement gas supply port 30 does not pass through the resin foam 50, but the second end surface 54 of the resin foam 50 and the second contact surface 12i of the second contact portion 12g. And is discharged from the measurement gas discharge port 32.

＜第４実施形態＞
［樹脂発泡体のガス透過性測定装置］
第４実施形態に係るガス透過性測定装置は、第１実施形態に係る測定装置１００における測定用セル１の代わりに、図６に例示したガス透過性測定用セル４（以下、「測定用セル４」という。）を備える以外は、測定装置１００と同じ装置である。 <Fourth embodiment>
[Gas permeability measuring device for resin foam]
The gas permeability measuring device according to the fourth embodiment is a gas permeability measuring cell 4 (hereinafter referred to as “measuring cell”) illustrated in FIG. 6 instead of the measuring cell 1 in the measuring device 100 according to the first embodiment. 4 ”)) except that the measuring apparatus 100 is provided.

（ガス透過性測定用セル）
本発明の第４実施形態に係る測定用セル４を図６に基づいて説明する。なお、図６において図３と同じ部分は同符号を付して説明を省略する。
測定用セル４は、下部セル体１０Ａと、下部セル体１０Ａ上に設置する上部セル体１２と、第１当接板１４と、第２当接板１６とを有している。
下部セル体１０Ａは、第１当接板１４の形状と相補的な形状を有する、第１当接板１４を嵌め込むための凹部１０ｃが上面１０ａ側に形成されており、キャリアガス流通部１８の上面が、凹部１０ｃの下面と同一面に開口する連通面２０とされている以外は、測定用セル１の下部セル体１０と同じである。
この測定用セル４は、第１当接板１４が下部セル体１０Ａの凹部１０ｃに嵌め込めるようになっている以外は、測定用セル１と同じ形態の測定用セルである。つまり、測定用セル４でも測定用セル１と同様に、内部に、連通面２０を介して互いに連通するように測定ガス流通部２６とキャリアガス流通部１８が形成され、第１当接板１４によって第１当接面１４ｃが形成され、第２当接板１６によって第２当接面１６ｂが形成される。 (Cell for measuring gas permeability)
A measurement cell 4 according to a fourth embodiment of the present invention will be described with reference to FIG. In FIG. 6, the same parts as those in FIG.
The measurement cell 4 includes a lower cell body 10A, an upper cell body 12 installed on the lower cell body 10A, a first contact plate 14, and a second contact plate 16.
The lower cell body 10A has a shape complementary to the shape of the first contact plate 14 and has a recess 10c for fitting the first contact plate 14 formed on the upper surface 10a side. The upper surface is the same as the lower cell body 10 of the measuring cell 1 except that the upper surface is a communication surface 20 that opens in the same plane as the lower surface of the recess 10c.
The measurement cell 4 is a measurement cell having the same form as the measurement cell 1 except that the first contact plate 14 can be fitted into the recess 10c of the lower cell body 10A. That is, in the measurement cell 4, similarly to the measurement cell 1, the measurement gas circulation part 26 and the carrier gas circulation part 18 are formed inside so as to communicate with each other via the communication surface 20. Thus, the first contact surface 14 c is formed, and the second contact plate 16 forms the second contact surface 16 b.

（測定ガス供給手段、キャリアガス供給手段、ガス透過量測定部）
測定ガス供給手段５は、配管７１を介して測定用セル４の測定ガス供給口３０と接続される。キャリアガス供給手段６は、配管７２を介して測定用セル４のキャリアガス供給口２２と接続される。ガス透過量測定部７は、配管７３を介して測定用セル４のキャリアガス排出口２４と接続される。 (Measurement gas supply means, carrier gas supply means, gas permeation amount measurement unit)
The measurement gas supply means 5 is connected to the measurement gas supply port 30 of the measurement cell 4 via a pipe 71. The carrier gas supply means 6 is connected to the carrier gas supply port 22 of the measurement cell 4 via a pipe 72. The gas permeation amount measurement unit 7 is connected to the carrier gas discharge port 24 of the measurement cell 4 via a pipe 73.

［樹脂発泡体のガス透過性測定方法］
第４実施形態に係る樹脂発泡体のガス透過性測定方法では、第１実施形態に係る樹脂発泡体のガス透過性測定方法と同様に、測定ガスが透過しない材料からなる封止層５８で周面５６を覆った樹脂発泡体５０を使用する。
測定ガスが透過しない材料からなる封止層５８で周面５６を覆った樹脂発泡体５０を、第１端面５２を連通面２０側、第２端面５４を連通面２０と反対側として、第１当接板１４と第２当接板１６の間に挟むように測定ガス流通部２６内に設置する。
具体的には、図６に示すように、下部セル体１０Ａの凹部１０ｃに、第１当接面１４ｃを上にして第１当接板１４を嵌め込み、第１当接板１４上に、第１当接面１４ｃが第１端面５２に当接するように樹脂発泡体５０を設置する。そして、樹脂発泡体５０上に、樹脂発泡体５０の第２端面５４に第２当接面１６ｂが当接し、貫通孔１６ａが下部セル体１０Ａ上に設置する上部セル体１２の測定ガス供給口３０と重なるように第２当接板１６を設置する。 [Method for measuring gas permeability of resin foam]
In the method for measuring gas permeability of a resin foam according to the fourth embodiment, similarly to the method for measuring gas permeability of a resin foam according to the first embodiment, the resin foam is surrounded by a sealing layer 58 made of a material that does not allow measurement gas to permeate. A resin foam 50 covering the surface 56 is used.
The resin foam 50 in which the peripheral surface 56 is covered with a sealing layer 58 made of a material that does not allow the measurement gas to pass through the first end surface 52 on the communication surface 20 side and the second end surface 54 on the opposite side to the communication surface 20 is the first. It is installed in the measurement gas flow part 26 so as to be sandwiched between the contact plate 14 and the second contact plate 16.
Specifically, as shown in FIG. 6, the first contact plate 14 is fitted into the recess 10c of the lower cell body 10A with the first contact surface 14c facing up, and the first contact plate 14 is The resin foam 50 is installed so that the first contact surface 14 c contacts the first end surface 52. And the measurement gas supply port of the upper cell body 12 in which the 2nd contact surface 16b contact | abuts on the 2nd end surface 54 of the resin foam 50 on the resin foam 50, and the through-hole 16a is installed on 10 A of lower cell bodies. The second contact plate 16 is installed so as to overlap with 30.

その後、第１実施形態に係る樹脂発泡体のガス透過性測定方法と同様に、樹脂発泡体５０の第１端面５２と第１当接板１４の第１当接面１４ｃとの間の気密を保ち、かつ第１当接板１４と下部セル体１０Ａの上面１０ａとの間の気密も保つように、樹脂発泡体５０の第１端面５２の外周部分と、第１当接板１４の外周部分を覆うように封止材３４を塗布する。
その後、第１当接板１４、樹脂発泡体５０および第２当接板１６を収容するように下部セル体１０Ａ上に上部セル体１２を設置してネジ２８により固定する。そして、第１実施形態に係る樹脂発泡体のガス透過性測定方法と同様に、樹脂発泡体５０の第１端面５２側と第２端面５４側が等圧となる条件で、測定ガス供給手段５から測定ガス供給口３０に測定ガスを供給するとともに、キャリアガス供給手段６からキャリアガス供給口２２にキャリアガスを供給し、樹脂発泡体５０の第１端面５２から流出してキャリアガス排出口２４から排出されたガス中の測定ガスの量をガス透過量測定部７で測定する。 Thereafter, as in the gas permeability measurement method for the resin foam according to the first embodiment, the airtightness between the first end surface 52 of the resin foam 50 and the first contact surface 14c of the first contact plate 14 is set. And the outer peripheral portion of the first end face 52 of the resin foam 50 and the outer peripheral portion of the first abutting plate 14 so as to maintain the airtightness between the first abutting plate 14 and the upper surface 10a of the lower cell body 10A. The sealing material 34 is applied so as to cover the surface.
Thereafter, the upper cell body 12 is placed on the lower cell body 10 </ b> A so as to accommodate the first contact plate 14, the resin foam 50 and the second contact plate 16, and fixed with screws 28. And from the measurement gas supply means 5 on the conditions that the 1st end surface 52 side and the 2nd end surface 54 side of the resin foam 50 become equal pressure similarly to the gas-permeability measurement method of the resin foam which concerns on 1st Embodiment. While supplying the measurement gas to the measurement gas supply port 30, the carrier gas is supplied from the carrier gas supply means 6 to the carrier gas supply port 22, flows out from the first end surface 52 of the resin foam 50, and flows out of the carrier gas discharge port 24. The amount of measurement gas in the discharged gas is measured by the gas transmission amount measuring unit 7.

＜その他の実施形態＞
本発明に使用するガス透過性測定用セルは、例えばキャリアガス流通部とガス透過量測定部の間の配管に樹脂発泡体の破片を捕集できるメッシュ部を設ける場合、測定ガス供給部とキャリアガス流通部の連通面にメッシュ部を設けなくてもよい。
また、ガス透過性測定用セルにおける測定ガス流通部から測定ガスを排出する測定ガス排出口の数は、２つ以上であってもよい。また、測定ガス排出口は、測定ガス流通部に配置する樹脂発泡体の周面の大部分が外部に露出するほど大きくてもよい。
また、四角形状の上壁と、該上壁の周縁部から下方に延びる四角筒状の側壁を有する上部セル体を備え、内部に四角柱状の測定ガス流通部が形成されるガス透過性測定用セルを使用してもよい。ガス透過性の測定には、四角柱状の樹脂発泡体を使用してもよく、円柱状の樹脂発泡体を使用してもよい。また、第１当接板および第２当接板の形状、第１当接板のメッシュ部の形状、第２当接板の貫通孔の形状は、四角形状等としてもよい。
また、一方の側面側から他方の側面側に向かって円柱状のキャリアガス流通部が内部に設けられ、一方の側面にキャリアガス供給口が形成され、他方の側面にキャリアガス排出口が形成された下部セル体を備えるガス透過性測定用セルを使用してもよい。 <Other embodiments>
When the gas permeability measuring cell used in the present invention is provided with, for example, a mesh part capable of collecting resin foam fragments in a pipe between the carrier gas flow part and the gas permeation amount measuring part, the measuring gas supply part and the carrier The mesh portion may not be provided on the communication surface of the gas circulation portion.
Further, the number of measurement gas discharge ports for discharging the measurement gas from the measurement gas circulation section in the gas permeability measurement cell may be two or more. Further, the measurement gas discharge port may be so large that most of the peripheral surface of the resin foam disposed in the measurement gas circulation part is exposed to the outside.
In addition, for gas permeability measurement, comprising an upper cell body having a rectangular upper wall and a rectangular cylindrical side wall extending downward from the peripheral edge of the upper wall, and a rectangular column-shaped measurement gas circulation part is formed therein A cell may be used. For measurement of gas permeability, a square columnar resin foam may be used, or a columnar resin foam may be used. Further, the shape of the first contact plate and the second contact plate, the shape of the mesh portion of the first contact plate, and the shape of the through hole of the second contact plate may be a square shape or the like.
In addition, a cylindrical carrier gas circulation part is provided inside from one side to the other side, a carrier gas supply port is formed on one side, and a carrier gas discharge port is formed on the other side. Alternatively, a gas permeability measuring cell having a lower cell body may be used.

以下、実施例を示すが、本発明は以下の記載によっては限定されない。
［例１］
図１〜３に示したガス透過性測定用セル１とガスクロマトグラフィーを用いて、以下の条件で硬質ウレタン樹脂発泡体（硬質ウレタンフォーム）のガス透過性を測定した。その結果、ガス透過量は、ガスクロマトグラフィーで３分間の測定を６回行った平均値として、０．１９５μＬであった。
樹脂発泡体５０：硬質ウレタン樹脂発泡体（直径８５ｍｍ、高さ４０ｍｍの円柱状）。
封止層５８：エポキシ樹脂（コニシ社製、品番：クイック３０）。
封止層５８の厚み：２ｍｍ。
連通面２０の面積：５，６７２ｍｍ２。
第１のシール部材３８、第２のシール部材４０：Ｏリング。
封止材３４：シリコーン樹脂。
測定ガス：窒素ガス（流量２０ｃｍ３／分）。
キャリアガス：ヘリウムガス（流量２０ｃｍ３／分）。 Hereinafter, although an Example is shown, this invention is not limited by the following description.
[Example 1]
The gas permeability of the rigid urethane resin foam (rigid urethane foam) was measured under the following conditions using the gas permeability measurement cell 1 and gas chromatography shown in FIGS. As a result, the gas permeation amount was 0.195 μL as an average value obtained by performing measurement for 3 minutes 6 times by gas chromatography.
Resin foam 50: hard urethane resin foam (columnar shape with a diameter of 85 mm and a height of 40 mm).
Sealing layer 58: epoxy resin (manufactured by Konishi, product number: Quick 30).
The thickness of the sealing layer 58: 2 mm.
Area of communication surface 20: 5,672 mm 2 .
First seal member 38, second seal member 40: O-ring.
Sealing material 34: silicone resin.
Measurement gas: Nitrogen gas (flow rate 20 cm 3 / min).
Carrier gas: helium gas (flow rate 20 cm 3 / min).

１〜４・・・ガス透過性測定用セル、１０・・・下部セル体、１０ａ・・・上面、１２・・・上部セル体、１２ａ・・・上壁、１２ｂ・・・側壁、１４・・・第１当接板、１４ａ・・・枠体、１４ｂ・・・メッシュ部、１４ｃ・・・第１当接面、１６・・・第２当接板、１６ａ・・・貫通孔、１６ｂ・・・第２当接面、１８・・・キャリアガス流通部、２０・・・連通面、２２・・・キャリアガス供給口、２４・・・キャリアガス排出口、２６・・・測定ガス流通部、３０・・・測定ガス供給口、３２・・・測定ガス排出口、３４・・・封止材、３８・・・第１のシール部材、４０・・・第２のシール部材、５０・・・樹脂発泡体、５２・・・第１端面、５４・・・第２端面、５６・・・周面、５８・・・封止層。   1 to 4 ... cells for measuring gas permeability, 10 ... lower cell body, 10a ... upper surface, 12 ... upper cell body, 12a ... upper wall, 12b ... side wall, 14. ..First contact plate, 14a ... frame, 14b ... mesh portion, 14c ... first contact surface, 16 ... second contact plate, 16a ... through hole, 16b ... 2nd contact surface, 18 ... Carrier gas distribution part, 20 ... Communication surface, 22 ... Carrier gas supply port, 24 ... Carrier gas discharge port, 26 ... Measurement gas flow 30 ... measurement gas supply port, 32 ... measurement gas discharge port, 34 ... sealing material, 38 ... first seal member, 40 ... second seal member, .. Resin foam, 52... First end surface, 54... Second end surface, 56.

Claims (9)

第１端面と、第１端面と反対側の第２端面と、これらの端面を繋ぐ周面とを備える樹脂発泡体のガス透過性を測定するためのガス透過性測定用セルであって、
内部に、連通面を介して互いに連通する測定ガス流通部とキャリアガス流通部とを備え、
測定ガス流通部は、樹脂発泡体を、第１端面を連通面側、第２端面を連通面の反対側として収容するスペースを有し、連通面と反対側の周壁に、測定ガスが供給される測定ガス供給口を、その他の周壁に測定ガス排出口を備え、
測定ガス流通部の連通面側には、連通面を閉塞せずに樹脂発泡体の第１端面に当接する第１当接面が形成され、
測定ガス流通部の連通面と反対側には、測定ガス供給口を閉塞せずに樹脂発泡体の第２端面に当接する第２当接面が形成され、
キャリアガス流通部は、キャリアガスが供給されるキャリアガス供給口とキャリアガス排出口とを備え、
第１当接面と第２当接面との間に樹脂発泡体を挟んだ状態で測定ガス供給口から測定ガスを供給した際、測定ガスの一部は樹脂発泡体を通過して連通面を通してキャリアガス流通部に至り、キャリアガスと共にキャリアガス排出口から排出され、
測定ガスの残部は、樹脂発泡体を通過せずに少なくとも樹脂発泡体の第２端面と第２当接面との間隙を通過して測定ガス排出口から排出されるように構成されている、樹脂発泡体のガス透過性測定用セル。 A gas permeability measuring cell for measuring gas permeability of a resin foam comprising a first end face, a second end face opposite to the first end face, and a peripheral face connecting these end faces,
Inside, provided with a measurement gas circulation part and a carrier gas circulation part that communicate with each other through a communication surface,
The measurement gas flow part has a space for accommodating the resin foam with the first end face as the communication surface side and the second end face as the opposite side of the communication surface, and the measurement gas is supplied to the peripheral wall opposite to the communication surface. A measuring gas supply port and a measuring gas discharge port on the other peripheral wall,
A first contact surface that contacts the first end surface of the resin foam without closing the communication surface is formed on the communication surface side of the measurement gas flow part,
A second abutting surface that abuts the second end surface of the resin foam without closing the measuring gas supply port is formed on the side opposite to the communication surface of the measuring gas flow part,
The carrier gas distribution unit includes a carrier gas supply port to which carrier gas is supplied and a carrier gas discharge port.
When the measurement gas is supplied from the measurement gas supply port with the resin foam sandwiched between the first contact surface and the second contact surface, a part of the measurement gas passes through the resin foam and communicates with the communication surface. To the carrier gas distribution department, and is discharged from the carrier gas outlet along with the carrier gas,
The remaining portion of the measurement gas is configured to pass through at least the gap between the second end surface of the resin foam and the second contact surface without passing through the resin foam and be discharged from the measurement gas discharge port. Cell for measuring gas permeability of resin foam. 第１当接面と第２当接面との間に樹脂発泡体を挟んだ際、第１当接面と第２当接面の少なくとも一方は樹脂発泡体を押圧するように付勢される、請求項１に記載の樹脂発泡体のガス透過性測定用セル。   When the resin foam is sandwiched between the first contact surface and the second contact surface, at least one of the first contact surface and the second contact surface is urged so as to press the resin foam. A cell for measuring gas permeability of a resin foam according to claim 1. 連通面にメッシュ部が設けられている、請求項１または２に記載の樹脂発泡体のガス透過性測定用セル。   The cell for measuring gas permeability of a resin foam according to claim 1 or 2, wherein a mesh portion is provided on the communication surface. 第１端面と、第１端面と反対側の第２端面と、これらの端面を繋ぐ周面とを備える樹脂発泡体のガス透過性を測定するためのガス透過性測定用セルであって、
上面が平坦な下部セル体と、下部セル体上に気密に設置される上部セル体と、樹脂発泡体の第１端面に当接させる第１当接板と、樹脂発泡体の第２端面に当接させる第２当接板と、を備え、
下部セル体は、キャリアガス流通部が内部に形成され、キャリアガス流通部に通じる連通面が上面に開口し、キャリアガス流通部にキャリアガスを供給するキャリアガス供給口と、キャリアガス流通部からキャリアガスを排出するキャリアガス排出口が上壁以外の周壁に形成され、
上部セル体は、上壁および上壁から下方に延びる側壁を有し、それら上壁および側壁と下部セル体の上面および連通面に囲まれる領域が、樹脂発泡体、第１当接板および第２当接板を収容する測定ガス流通部とされ、測定ガス流通部に測定ガスを供給する測定ガス供給口が上部セル体の上壁に、測定ガス流通部から測定ガスを排出する測定ガス排出口が側壁に形成され、
第１当接板は、周辺が連通面の周辺より大きい枠体の中央にメッシュ部が設けられてなり、メッシュ部が連通面を覆うように下部セル体の上面に配置され、枠体の上面が樹脂発泡体の第１端面に当接する第１当接面とされ、
第２当接板は、貫通孔を有する枠体からなり、下面が樹脂発泡体の第２端面に当接する第２当接面とされ、
樹脂発泡体を第１当接面と第２当接面との間に挟んで測定ガス流通部に収容した際、第２当接板は貫通孔が測定ガス供給口と重なるように配置され、
かつ、樹脂発泡体の第２端面に当接された第２当接板と上部セル体の上壁との間がシール部材でシールされ、該シール部材により第２当接板が樹脂発泡体を押圧するように付勢され、
第１当接板と第２当接板との間に樹脂発泡体を挟んだ状態で測定ガス供給口から測定ガスを供給した際、測定ガスの一部は樹脂発泡体を通過して連通面を通してキャリアガス流通部に至り、キャリアガスと共にキャリアガス排出口から排出され、
測定ガスの残部は、樹脂発泡体を通過せずに樹脂発泡体の第２端面と第２当接面との間隙を通過して測定ガス排出口から排出される、樹脂発泡体のガス透過性測定用セル。 A gas permeability measuring cell for measuring gas permeability of a resin foam comprising a first end face, a second end face opposite to the first end face, and a peripheral face connecting these end faces,
A lower cell body having a flat upper surface, an upper cell body that is airtightly installed on the lower cell body, a first contact plate that contacts the first end surface of the resin foam, and a second end surface of the resin foam A second abutting plate to abut,
The lower cell body has a carrier gas circulation part formed therein, a communication surface communicating with the carrier gas circulation part is opened on the upper surface, a carrier gas supply port for supplying the carrier gas to the carrier gas circulation part, and a carrier gas circulation part A carrier gas discharge port for discharging the carrier gas is formed on the peripheral wall other than the upper wall,
The upper cell body has an upper wall and side walls extending downward from the upper wall, and a region surrounded by the upper wall and the side wall and the upper surface and the communication surface of the lower cell body is formed of the resin foam, the first contact plate, and the first wall. 2 A measurement gas circulation section for accommodating a contact plate, and a measurement gas supply port for supplying a measurement gas to the measurement gas circulation section on the upper wall of the upper cell body discharges a measurement gas from the measurement gas circulation section. An outlet is formed in the sidewall,
The first contact plate is provided with a mesh portion at the center of the frame body whose periphery is larger than the periphery of the communication surface, and is disposed on the upper surface of the lower cell body so as to cover the communication surface. Is a first contact surface that contacts the first end surface of the resin foam,
The second contact plate is made of a frame body having a through hole, and the lower surface is a second contact surface that contacts the second end surface of the resin foam,
When the resin foam is sandwiched between the first contact surface and the second contact surface and accommodated in the measurement gas flow part, the second contact plate is disposed so that the through hole overlaps the measurement gas supply port,
And between the 2nd contact plate contacted with the 2nd end surface of the resin foam and the upper wall of the upper cell body is sealed with a seal member, and the second contact plate causes the resin foam to be sealed by the seal member. Urged to press,
When the measurement gas is supplied from the measurement gas supply port with the resin foam sandwiched between the first contact plate and the second contact plate, a part of the measurement gas passes through the resin foam and communicates with the communication surface. To the carrier gas distribution department, and is discharged from the carrier gas outlet along with the carrier gas,
The remainder of the measurement gas passes through the gap between the second end surface and the second contact surface of the resin foam without passing through the resin foam, and is discharged from the measurement gas discharge port. Measurement cell. 請求項１〜４のいずれか一項に記載のガス透過性測定用セルと、ガス透過性測定用セルの測定ガス供給口に測定ガスを供給する測定ガス供給手段と、ガス透過性測定用セルのキャリアガス供給口にキャリアガスを供給するキャリアガス供給手段と、ガス透過性測定用セルのキャリアガス排出口から排出されるガス中の測定ガスの量を測定するガス透過量測定部と、を有する樹脂発泡体のガス透過性測定装置。   A gas permeability measurement cell according to any one of claims 1 to 4, a measurement gas supply means for supplying a measurement gas to a measurement gas supply port of the gas permeability measurement cell, and a gas permeability measurement cell A carrier gas supply means for supplying a carrier gas to the carrier gas supply port, and a gas permeation amount measurement unit for measuring the amount of measurement gas in the gas discharged from the carrier gas discharge port of the gas permeability measurement cell, An apparatus for measuring gas permeability of a resin foam. 第１端面と、第１端面と反対側の第２端面と、これらの端面を繋ぐ周面とを備える樹脂発泡体を透過する測定ガスの量を測定する、樹脂発泡体のガス透過性測定方法であって、
樹脂発泡体の周面が、測定ガスを透過しない材料からなる封止層で覆われてなり、
樹脂発泡体の第１端面側と第２端面側が等圧となる条件で、樹脂発泡体の第２端面側に測定ガスを供給するとともに第１端面側にキャリアガスを供給し、第１端面から流出する測定ガスの量を測定する、樹脂発泡体のガス透過性測定方法。 A method for measuring gas permeability of a resin foam, comprising: measuring a quantity of a measurement gas that permeates a resin foam including a first end face, a second end face opposite to the first end face, and a peripheral face connecting these end faces. Because
The peripheral surface of the resin foam is covered with a sealing layer made of a material that does not transmit the measurement gas,
The measurement gas is supplied to the second end face side of the resin foam and the carrier gas is supplied to the first end face side under the condition that the first end face side and the second end face side of the resin foam are at the same pressure. A method for measuring the gas permeability of a resin foam, wherein the amount of measurement gas flowing out is measured. 請求項５に記載のガス透過性測定装置を用い、
封止層で周面を覆った樹脂発泡体を、第１端面を連通面側、第２端面を連通面の反対側として、測定ガス流通部内で第１当接面と第２当接面との間に挟み、かつ、樹脂発泡体の第１端面と第１当接面との間の気密を保つように、樹脂発泡体における第１端面の外周部分に封止材を塗布した状態で測定ガスおよびキャリアガスを供給する、請求項６に記載の樹脂発泡体のガス透過性測定方法。 Using the gas permeability measuring device according to claim 5,
A resin foam having a peripheral surface covered with a sealing layer is formed with a first contact surface and a second contact surface in the measurement gas flow section with the first end surface as the communication surface side and the second end surface as the opposite side of the communication surface. Measured with a sealing material applied to the outer peripheral portion of the first end surface of the resin foam so as to maintain airtightness between the first end surface and the first contact surface of the resin foam. The method for measuring gas permeability of a resin foam according to claim 6, wherein a gas and a carrier gas are supplied. 測定ガスが窒素ガスである、請求項６または７に記載の樹脂発泡体のガス透過性測定方法。   The method for measuring gas permeability of a resin foam according to claim 6 or 7, wherein the measurement gas is nitrogen gas. 封止層を形成する材料がエポキシ樹脂である、請求項６〜８のいずれか一項に記載の樹脂発泡体のガス透過性測定方法。   The method for measuring gas permeability of a resin foam according to any one of claims 6 to 8, wherein a material forming the sealing layer is an epoxy resin.
JP2011274463A 2011-12-15 2011-12-15 Cell for measuring gas permeability of resin foam, gas permeability measuring apparatus and gas permeability measuring method Pending JP2013124967A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2011274463A JP2013124967A (en) 2011-12-15 2011-12-15 Cell for measuring gas permeability of resin foam, gas permeability measuring apparatus and gas permeability measuring method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2011274463A JP2013124967A (en) 2011-12-15 2011-12-15 Cell for measuring gas permeability of resin foam, gas permeability measuring apparatus and gas permeability measuring method

Publications (1)

Publication Number Publication Date
JP2013124967A true JP2013124967A (en) 2013-06-24

Family

ID=48776291

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2011274463A Pending JP2013124967A (en) 2011-12-15 2011-12-15 Cell for measuring gas permeability of resin foam, gas permeability measuring apparatus and gas permeability measuring method

Country Status (1)

Country Link
JP (1) JP2013124967A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101450528B1 (en) 2013-11-08 2014-10-14 한국해양대학교 산학협력단 Apparatus and System of Polymer Solution Filtration for Enhanced Oil Recovery
CN108519316A (en) * 2018-04-20 2018-09-11 东莞捷邦实业有限公司 Special fixture for detecting the foam component with grenadine mesh
JP2021018164A (en) * 2019-07-22 2021-02-15 株式会社住化分析センター Gas transmitting cell, and method and device for measuring transmittance of gas

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101450528B1 (en) 2013-11-08 2014-10-14 한국해양대학교 산학협력단 Apparatus and System of Polymer Solution Filtration for Enhanced Oil Recovery
CN108519316A (en) * 2018-04-20 2018-09-11 东莞捷邦实业有限公司 Special fixture for detecting the foam component with grenadine mesh
CN108519316B (en) * 2018-04-20 2023-09-19 捷邦精密科技股份有限公司 Special jig for detecting foam component with gauze meshes
JP2021018164A (en) * 2019-07-22 2021-02-15 株式会社住化分析センター Gas transmitting cell, and method and device for measuring transmittance of gas
JP7293022B2 (en) 2019-07-22 2023-06-19 株式会社住化分析センター Gas permeation cell, gas permeability measuring method, and gas permeability measuring device

Similar Documents

Publication Publication Date Title
TWI673484B (en) Sensor unit and airtightness inspection device
US10453723B2 (en) Gas purge filter
JP2013124967A (en) Cell for measuring gas permeability of resin foam, gas permeability measuring apparatus and gas permeability measuring method
WO2007080600A9 (en) Device for culturing and transporting cells
GB2431601A (en) Water transport method and assembly including a thin film membrane for the addition or removal of water from gases or liquids
CN108645575B (en) Liquid leakage detection device and method
WO2004038789A1 (en) Substrate storage container
WO2008096492A1 (en) Reaction container plate and reaction processing method
CN202256113U (en) Experimental container for detecting infiltration and solidification of soil body
US10533912B2 (en) Flange-set for a pressure difference measuring transducer
CN109983318B (en) Fluid controller abnormality detection device, abnormality detection system, abnormality detection method, and fluid controller
US8347689B2 (en) Tool for assisting leak testing of an enclosed volume and method incorporating the tool
US10845265B2 (en) Gas indicator
TW201917942A (en) Battery cell formation system and probe supporting structure thereof
JP5738688B2 (en) Gas permeation cell, gas permeability measuring device, and gas permeability measuring method
TW200943453A (en) Plasma processing apparatus and outside air isolation container
US4662213A (en) Back pressured pneumatic pressure cell
JP6489466B2 (en) Article for measuring gas permeability, gas permeation cell, gas permeability measuring apparatus and gas permeability measuring method
CN204064558U (en) Airtight detecting apparatus gas tank
JP2002143624A (en) Air permeable filter and vessel provided with filter
JP7125000B2 (en) Substrate storage container
US20150097339A1 (en) Sealing arrangement, a conveying device having a sealing arrangement and a method for operating the sealing arrangement
JP6675879B2 (en) Substrate processing apparatus and control method
US20100093067A1 (en) Gassing or Fumigation Device and System
JP2009287966A (en) Assembling method of flowmeter, and flowmeter