JPH049462B2 - - Google Patents
Info
- Publication number
- JPH049462B2 JPH049462B2 JP18496384A JP18496384A JPH049462B2 JP H049462 B2 JPH049462 B2 JP H049462B2 JP 18496384 A JP18496384 A JP 18496384A JP 18496384 A JP18496384 A JP 18496384A JP H049462 B2 JPH049462 B2 JP H049462B2
- Authority
- JP
- Japan
- Prior art keywords
- sample
- mounting plate
- sample mounting
- measuring
- water repellency
- 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.)
- Expired
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 32
- 238000000034 method Methods 0.000 claims description 12
- 238000005259 measurement Methods 0.000 claims description 3
- 239000007921 spray Substances 0.000 description 4
- 239000002390 adhesive tape Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N13/00—Investigating surface or boundary effects, e.g. wetting power; Investigating diffusion effects; Analysing materials by determining surface, boundary, or diffusion effects
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Description
（産業上の利用分野）
本発明は撥水性を評価するための新規な測定方
法及びその装置に関するものである。
（従来の技術）
従来、撥水性を評価する方法としてJIS−Ｌ−
1092のスプレー法及びブンデスマン法がよく知ら
れており、測定装置としてそれぞれスプレー法撥
水試験装置及びブンデスマン試験機が使用されて
いる。スプレー式撥水試験装置は、水平面に対し
45度に傾けた試料台よりなるもので、試料台に固
定した試料上に水をスプレーして、スプレー後の
“ぬれ”の状態を観察し、撥水性を評価するもの
である。ところが、この方法では“ぬれ”の状態
を肉眼観察で評価するため、測定者により評価が
異なる場合がしばしばである。また、スプレー式
は表面の“ぬれ”の状態を判断するもので、水の
はじく程度を測定するものではないので、真の意
味での撥水性を評価しているとはいえない。
また、ブンデスマン試験機は移動している試料
上にシヤワーを降らせて、撥水性、防水性を評価
するものであるが、これも表面の“ぬれ”を主に
測定するものであるから、真の撥水性を正当に評
価しているものではない。
（発明が解決しようとする問題点）
本発明は、従来の測定機械では測定できなかつ
た表面の撥水性を適正に評価するための新規な測
定方法及び装置を提供するものである。
（問題点を解決するための手段並びに作用）
本発明は、「平板上に取りつけた平面状の被測
定試料に水滴を滴下し、次に該平板を等速度で傾
斜せしめ、上記水滴の移動開始時点における該平
板の水平面に対する傾斜角を測定することを特徴
とする撥水性の測定方法」並びに「水平面と平行
な軸を中心として回転移動の可能な試料取付板、
該試料取付板と連動する回転駆動機構並びに該試
料取付板の水平面に対する傾斜角測定機構を有す
ることを特徴とする撥水性測定装置」を要旨とす
るものである。
以下、図面を用いて本発明を詳細に説明する。
第１図は、本発明装置の一例を示す概略見取図
である。
本発明の装置は、水平面と平行な軸２を中心と
して回転移動の可能な試料取付板１、試料取付板
１と連動する回転駆動機構のステツピングモータ
ー３及びステツピングモーター制禦部４の内部に
内在された、試料取付板の水平面に対する傾斜角
測定機構（図示せず）よりなるものである。
試料取付板１は、その一辺が水平面と平行な軸
２に固定されており、この軸を中心として回転で
きるようになつている。試料取付板１は、表面が
平滑で、かつ試料を貼付けることができるように
なつている。
試料取付板１の材質としては、ガラス、木、金
属、プラスチツクなど各種のものが使用でき、ま
たその形や大きさは特に限定されないが、四角形
で１辺が50〜500mm位のもので十分である。
被測定試料を試料取付板１に貼付けるには接着
剤、接着テープなどを利用すればよい。
試料取付板１は、そ一辺が軸２に固定されて回
転移動するが、回転駆動はステツピングモーター
３の回転によつて行う。その取付板１の回転移動
は取付板１の端部１２を上下せしめる機構によつ
て行つてもよく、本発明においてはいかなる装置
を使用してもよい。
試料取付板１は、0.3度／秒〜10度／秒の範囲
の回転速度で回転できるようにモーター３を調節
しておく。回転速度が10度／秒以上になると速度
が速くなりすぎて、適正な測定データーを得るこ
とができない。また、0.3度／秒以下では措定に
非常に時間がかかり、非能率的である。
本発明装置は、試料取付板上の試料上に水滴を
静止せしめ、試料を傾けることにより水滴をころ
がり落とし、その水滴がころがりはじめたときの
試料の角度を以て撥水性を評価するものである。
したがつて、試料と水平面との角度、すなわち試
料取付板１の水平面に対する傾斜角度を測定する
装置を備えていることが必要である。
最も単純な角度測定装置として分度器などを用
いる方法もあるが、第１図のごとく軸２を回転せ
しめることにより試料取付板１を回転せしめる方
法では、回転駆動装置としてステツピングモータ
ー３を使用し、このモーターの回転数から電気的
に角度を測定する装置（図示せず）をステツピン
グモーター制禦部４の内部に内在せしめてある。
本発明の装置を用いて撥水性を測定するには次
のように行う。
まず、水準器９によつて基台１０を完全に水平
に位置せしめた後、試料取付板１を基台１０に接
しめて水平にし、次いで試料の高密度織物１３を
試料取付板に接着テープ１４で貼付する。次い
で、試料上に水滴１５を0.2c.c.滴下し、直ちにモ
ーター起動ボタン６を押し、モーター３を回転さ
せ、試料取付板１を傾斜させる。
試料取付板の回転速度は、モーター回転数制御
ダイヤル８を調整して１度／秒に設定してある。
試料上の水滴が移動した瞬間にモーター停止ボ
タン７を押し、ステツピングモーター３を停止さ
せ、試料取付板１の点線の位置で停止させる。水
滴が移動したときの試料取付板の傾斜角Θ、すな
わち試料の傾斜角Θはステツピングモーターの回
転数により計算（傾斜角はモーターの回転数に比
例する。）されてデジタル表示盤５に表示され、
この角度の大きさにより試料の撥水性が評価され
る。
（効果）
本発明は、被測定試料上に滴下した水滴が移動
開始するときの試料の傾斜角を測定することによ
つて試料の撥水性の度合を評価するものであるか
ら、簡単な装置で、しかも簡単な操作によつて試
料の真の意味の撥水性の程度を測定し、評価する
ことができる。
(Industrial Application Field) The present invention relates to a novel measuring method and apparatus for evaluating water repellency. (Prior art) Conventionally, JIS-L- was used as a method for evaluating water repellency.
The 1092 spray method and Bundesmann method are well known, and a spray method water repellency tester and a Bundesmann tester are used as measurement devices, respectively. The spray type water repellency test device is
It consists of a sample stand tilted at 45 degrees, and water is sprayed onto the sample fixed on the sample stand, and the "wetting" state after spraying is observed to evaluate water repellency. However, in this method, the state of "wetness" is evaluated by visual observation, so the evaluation often differs depending on the measurer. Additionally, the spray type measures the "wet" state of the surface, not the degree to which water is repelled, so it cannot be said to evaluate water repellency in the true sense of the word. In addition, the Bundesmann tester evaluates water repellency and waterproofness by showering a moving sample, but since this also mainly measures the "wetness" of the surface, it is not accurate. This is not a fair evaluation of the water repellency of the product. (Problems to be Solved by the Invention) The present invention provides a novel measuring method and device for appropriately evaluating the water repellency of a surface, which could not be measured using conventional measuring machines. (Means and effects for solving the problem) The present invention is based on the following method: ``Water droplets are dropped onto a flat sample to be measured mounted on a flat plate, and then the flat plate is tilted at a constant speed to start the movement of the water droplets. A method for measuring water repellency characterized by measuring the inclination angle of the flat plate with respect to a horizontal plane at a certain point in time, and a sample mounting plate capable of rotating around an axis parallel to the horizontal plane;
A water repellency measuring device characterized by having a rotational drive mechanism interlocking with the sample mounting plate and a mechanism for measuring the inclination angle of the sample mounting plate with respect to a horizontal plane. Hereinafter, the present invention will be explained in detail using the drawings. FIG. 1 is a schematic diagram showing an example of the apparatus of the present invention. The apparatus of the present invention includes a sample mounting plate 1 that is rotatable about an axis 2 parallel to a horizontal plane, a stepping motor 3 of a rotational drive mechanism interlocked with the sample mounting plate 1, and an internal structure of a stepping motor control section 4. It consists of an inclination angle measuring mechanism (not shown) built into the sample mounting plate with respect to the horizontal plane. One side of the sample mounting plate 1 is fixed to an axis 2 parallel to a horizontal plane, and is rotatable about this axis. The sample mounting plate 1 has a smooth surface and is designed to allow a sample to be attached. Various materials such as glass, wood, metal, and plastic can be used for the sample mounting plate 1, and its shape and size are not particularly limited, but a rectangular shape with a side of 50 to 500 mm is sufficient. be. To attach the sample to be measured to the sample mounting plate 1, an adhesive, adhesive tape, or the like may be used. The sample mounting plate 1 is fixed on one side to a shaft 2 and rotates, and the rotation is driven by the rotation of a stepping motor 3. The rotational movement of the mounting plate 1 may be performed by a mechanism for raising and lowering the end portion 12 of the mounting plate 1, and any device may be used in the present invention. The motor 3 is adjusted so that the sample mounting plate 1 can be rotated at a rotation speed in the range of 0.3 degrees/second to 10 degrees/second. If the rotation speed exceeds 10 degrees/second, the speed becomes too fast and it is impossible to obtain proper measurement data. Moreover, if it is less than 0.3 degrees/second, it takes a very long time to measure and is inefficient. The device of the present invention allows water droplets to stand still on a sample on a sample mounting plate, allows the water droplets to roll off by tilting the sample, and evaluates water repellency based on the angle of the sample when the water droplets begin to roll.
Therefore, it is necessary to have a device that measures the angle between the sample and the horizontal plane, that is, the angle of inclination of the sample mounting plate 1 with respect to the horizontal plane. There is a method of using a protractor or the like as the simplest angle measuring device, but in the method of rotating the sample mounting plate 1 by rotating the shaft 2 as shown in Fig. 1, a stepping motor 3 is used as the rotational drive device. A device (not shown) for electrically measuring the angle from the rotational speed of the motor is housed inside the stepping motor control section 4. Water repellency is measured using the apparatus of the present invention as follows. First, after positioning the base 10 completely horizontally using the spirit level 9, the sample mounting plate 1 is brought into contact with the base 10 and made horizontal, and then the high-density fabric 13 of the sample is attached to the sample mounting plate using the adhesive tape 14. Paste it with. Next, 0.2 cc of water droplet 15 is dropped onto the sample, and the motor start button 6 is immediately pressed to rotate the motor 3 and tilt the sample mounting plate 1. The rotation speed of the sample mounting plate is set to 1 degree/second by adjusting the motor rotation speed control dial 8. The moment the water droplet on the sample moves, the motor stop button 7 is pressed to stop the stepping motor 3, and the stepping motor 3 is stopped at the position indicated by the dotted line on the sample mounting plate 1. The inclination angle Θ of the sample mounting plate when the water droplet moves, that is, the inclination angle Θ of the sample, is calculated based on the rotational speed of the stepping motor (the inclination angle is proportional to the motor rotational speed) and displayed on the digital display panel 5. is,
The water repellency of the sample is evaluated based on the size of this angle. (Effects) The present invention evaluates the degree of water repellency of a sample by measuring the inclination angle of the sample when a water droplet dropped on the sample starts to move, so it is a simple device. Furthermore, the true degree of water repellency of a sample can be measured and evaluated by simple operations.
第１図は、本発明の撥水性測定装置の一例を示
す概略見取図である。
１……試料取付板、２……回転駆動軸、３……
ステツピングモーター、４……ステツピングモー
ター制御部、５……デジタル表示盤、６……モー
ター駆動ボタン、７……モーター停止ボタン、８
……モーター回転制御ダイヤル、９……水準器、
１０……基台、１１……回転移動したときの試料
取付板の位置、１２……端部、１３……被測定試
料、１４……接着テープ、１５……水滴。
FIG. 1 is a schematic diagram showing an example of the water repellency measuring device of the present invention. 1...Sample mounting plate, 2...Rotation drive shaft, 3...
Stepping motor, 4...Stepping motor control unit, 5...Digital display panel, 6...Motor drive button, 7...Motor stop button, 8
...Motor rotation control dial, 9...Level,
DESCRIPTION OF SYMBOLS 10... Base, 11... Position of sample mounting plate when rotated, 12... End, 13... Sample to be measured, 14... Adhesive tape, 15... Water drop.
Claims (1)
滴を滴下し、次に該平板を等速度で傾斜せしめ、
上記水滴の移動開始時点における該平板の水平面
に対する傾斜角を測定することを特徴とする撥水
性の測定方法。 ２ 水平面と平行な軸を中心として回転移動の可
能な試料取付板、該試料取付板と連動する回転駆
動機構並びに該試料取付板の水平面に対する傾斜
角測定機構を有することを特徴とする撥水性測定
装置。[Claims] 1. Dropping water droplets on a flat sample to be measured mounted on a flat plate, then tilting the flat plate at a constant speed,
A method for measuring water repellency, comprising measuring the angle of inclination of the flat plate with respect to a horizontal plane at the time when the water droplets start moving. 2. Water repellency measurement characterized by having a sample mounting plate rotatably movable about an axis parallel to a horizontal plane, a rotational drive mechanism interlocking with the sample mounting plate, and a mechanism for measuring the inclination angle of the sample mounting plate with respect to the horizontal plane. Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18496384A JPS6162839A (en) | 1984-09-03 | 1984-09-03 | Method and apparatus for measuring water repellency |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18496384A JPS6162839A (en) | 1984-09-03 | 1984-09-03 | Method and apparatus for measuring water repellency |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6162839A JPS6162839A (en) | 1986-03-31 |
| JPH049462B2 true JPH049462B2 (en) | 1992-02-20 |
Family
ID=16162409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18496384A Granted JPS6162839A (en) | 1984-09-03 | 1984-09-03 | Method and apparatus for measuring water repellency |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6162839A (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102519844B (en) * | 2011-12-01 | 2013-06-12 | 江苏阳光股份有限公司 | Testing method for moisture absorption performance of wool fabric |
| CN102830045A (en) * | 2012-07-26 | 2012-12-19 | 浙江理工大学 | Fabric spray rating objective evaluating method based on image processing |
| CN102830046B (en) * | 2012-08-16 | 2014-07-23 | 浙江理工大学 | Textile wiping water absorption performance testing device and testing method |
| CN104198337A (en) * | 2014-08-19 | 2014-12-10 | 云南大红山管道有限公司 | Experimental device for calculating characteristics of slide angle and angle of repose of iron ore concentrate pulp |
| CN105092420A (en) * | 2015-08-17 | 2015-11-25 | 吴江福爱梁纺织有限公司 | Device for detecting moisture resistance of surface of fabric |
| CN105651241B (en) * | 2016-03-24 | 2018-02-06 | 北新集团建材股份有限公司 | Quick measure sheet material makes moist the experimental method and experimental provision of amount of deflection |
| WO2024127460A1 (en) * | 2022-12-12 | 2024-06-20 | 日本電信電話株式会社 | Water repellency/oil repellency evaluation method and water repellency/oil repellency evaluation device |
-
1984
- 1984-09-03 JP JP18496384A patent/JPS6162839A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6162839A (en) | 1986-03-31 |
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