JPH0480639A - Measuring method for particle size of powder - Google Patents
Measuring method for particle size of powderInfo
- Publication number
- JPH0480639A JPH0480639A JP19310990A JP19310990A JPH0480639A JP H0480639 A JPH0480639 A JP H0480639A JP 19310990 A JP19310990 A JP 19310990A JP 19310990 A JP19310990 A JP 19310990A JP H0480639 A JPH0480639 A JP H0480639A
- Authority
- JP
- Japan
- Prior art keywords
- powder
- particle size
- viscosity
- measured
- slurry
- 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
Links
- 239000000843 powder Substances 0.000 title claims abstract description 58
- 239000002245 particle Substances 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000011347 resin Substances 0.000 claims abstract description 7
- 229920005989 resin Polymers 0.000 claims abstract description 7
- 239000002904 solvent Substances 0.000 claims abstract description 6
- 238000011088 calibration curve Methods 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 6
- 239000002002 slurry Substances 0.000 abstract description 14
- 238000005259 measurement Methods 0.000 abstract description 4
- 101100327917 Caenorhabditis elegans chup-1 gene Proteins 0.000 abstract description 3
- 239000005388 borosilicate glass Substances 0.000 abstract description 3
- 239000011521 glass Substances 0.000 abstract description 3
- 238000013019 agitation Methods 0.000 abstract 3
- 238000011156 evaluation Methods 0.000 abstract 1
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 9
- 239000000919 ceramic Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000000691 measurement method Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 239000004925 Acrylic resin Substances 0.000 description 2
- 229920000178 Acrylic resin Polymers 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 239000013256 coordination polymer Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 230000002925 chemical effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007561 laser diffraction method Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
Landscapes
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
Description
【発明の詳細な説明】
〔概 要〕
本発明は粒末の測定方法に係り、特に同一ロットの製造
において精度の高い粉末の測定方法に関し、
特に同一製造条件下において精度の高い粒度測定可能な
粉末の粒度測定方法を提供することを目的とし、
粉末の粒度測定に際し、予め粒度の知られた粉末と溶剤
と樹脂とを混合して粉末混合融液を作成し、前記粉末混
合融液を撹拌して撹拌時のモータのトルクを測定するこ
とにより粘度に換算し、前記粒度と粘度の複数の関係を
求めて得ちれた検量線を作成した後、前記粉末と同種の
被測定粉末の粘度を上記方法で求めて前記検量線から前
記被測定粉末の粒度を求めることを構成とする。[Detailed Description of the Invention] [Summary] The present invention relates to a method for measuring particle size, and in particular to a method for measuring powder with high accuracy in the production of the same lot. The purpose of the present invention is to provide a method for measuring the particle size of powder, and when measuring the particle size of powder, a powder mixture of known particle size is mixed with a solvent and a resin to create a powder mixture melt, and the powder mixture melt is stirred. After converting into viscosity by measuring the torque of the motor during stirring, and creating a calibration curve obtained by determining multiple relationships between the particle size and viscosity, calculate the viscosity of the powder to be measured of the same type as the powder. is determined by the method described above, and the particle size of the powder to be measured is determined from the calibration curve.
本発明は粒末の測定方法に係り、特に同一ロットの製造
において精度の高い粉末の粒度測定方法に関するもので
ある。The present invention relates to a method for measuring particle size, and more particularly to a method for measuring particle size of powder with high accuracy in production of the same lot.
セラミックや焼結金属等は粉末を原料として製造される
。この粉末は所定の粒度を用いるのが好ましい。そのた
めに粉末粒度測定が必要である。Ceramics, sintered metals, etc. are manufactured using powder as raw materials. Preferably, this powder has a predetermined particle size. For this purpose, powder particle size measurements are required.
従来その粉末粒度測定方法は数多くあり、レーザ−回折
法、沈降法、電気横帯法が一般的である。Conventionally, there are many methods for measuring powder particle size, and the most common are laser diffraction method, sedimentation method, and electric transverse band method.
：発明が解決しようとする課題二
しかしながら、上記従来法では測定法により、測定値が
異なったり、また同一測定法でも分散方法によっても、
測定者によっても測定値がばらつく、特に上記の如く同
一ロットの原料のような粉末粒度がわずかに異なる場合
の粒度測定では精度が非常に悪く、信頼性に欠けていた
。：Problem to be Solved by the Invention 2 However, with the above conventional method, the measured values may differ depending on the measurement method, and even if the same measurement method is used, the dispersion method may
Measured values vary depending on the measurer, and in particular, as mentioned above, particle size measurements when powder particle sizes differ slightly, such as raw materials from the same lot, have very poor accuracy and lack reliability.
本発明は同一製造条件下において精度の高い粒度測定可
能な粉末の粒度測定方法を提供することを目的とする。An object of the present invention is to provide a method for measuring the particle size of powder, which enables highly accurate particle size measurement under the same manufacturing conditions.
上記課題は、本発明によれば、粉末の粒度測定に際し、
予め粒度の知られた粉末と溶剤と樹脂とを混合して粉末
混合融液を作成し、前記粉末混合融液を撹拌して撹拌時
のモータのトルクを測定することにより粘度に換算し、
前記粒度と粘度の複数の関係を求めて得られた検量線を
作成した後、前記粉末と同種の被測定粉末の粘度を上記
方法で来島て前記検量線から前記被測定粉末の粒度を求
めることを特徴とする粉末の粒度測定方法によって解決
される。According to the present invention, the above problem can be solved by:
A powder mixture melt is created by mixing a powder whose particle size is known in advance, a solvent, and a resin, and the powder mixture melt is stirred and converted into viscosity by measuring the torque of the motor during stirring,
After creating a calibration curve obtained by determining a plurality of relationships between the particle size and viscosity, the viscosity of a powder to be measured of the same type as the powder is determined by the above method, and the particle size of the powder to be measured is determined from the calibration curve. The problem is solved by a powder particle size measurement method characterized by:
本発明で用いられる粉末はセラミック（グＩＪ−ンシ一
ト）作成用に用いられる原材料粉末が有効であるがその
他金属粉末、その他種々の粉末が用いられる。The powder used in the present invention is effectively a raw material powder used for making ceramics (IJ-inserts), but other powders such as metal powders and various other powders can also be used.
溶剤と樹脂は粉末と混合して均一スラリー状になるよう
な量のが好ましい。その溶剤としてはメチルエチルケト
ン（ＭＥＫ）が樹脂の溶解性が良く、粉末に化学的影響
を与えない理由から好ましく、樹脂としてアクリル樹脂
が粉末の結合力に富むたｔ好ましい。The solvent and resin are preferably used in amounts that will mix with the powder to form a uniform slurry. As the solvent, methyl ethyl ketone (MEK) is preferable because it has good solubility in the resin and does not have a chemical effect on the powder, and as the resin, acrylic resin is preferable because it has a strong binding force for the powder.
本発明によれば予め形成した粉末の粒度と粘度の関係を
示す検量線を種々の粉末毎に作成しておけば、被測定粉
末粒度がその粘度を測定することにより検量線から知る
ことが出来る。According to the present invention, if a calibration curve showing the relationship between the particle size and viscosity of the powder formed in advance is created for each type of powder, the particle size of the powder to be measured can be determined from the calibration curve by measuring its viscosity. .
〔実施例二・ 以下本発明の実施例を図面にもとすいて説明する。[Example 2・ Embodiments of the present invention will be described below with reference to the drawings.
第１図は、本発明に係るスラリーの粘度測定法を示す概
略図である。FIG. 1 is a schematic diagram showing a method for measuring the viscosity of a slurry according to the present invention.
まず例えばアルミナ・ホウケイ酸ガラスからなるセラミ
ック・ガラス粉末のスラリーを作成する。First, a slurry of ceramic glass powder made of, for example, alumina-borosilicate glass is prepared.
このスラリーの作成は５０−の容器にアルミナボール（
新品）を３個入れ、容器の口にテフロンシールテープを
巻き付ける。上記容器にメチルエチルケトン（ＭＢＫ）
とアクリル樹脂の混合溶剤約２３ｇを入れ更に上記粉末
を約２０ｇこぼさないように入れ約１分間撹拌混合して
スラリーを作成した。次に、作成したスラリーに沈澱が
ないことを確認した後、第１図に示した粘度計の試拌カ
ップ１にスラリー２を約１／２入れスピンドル＝１８を
入れ、スラリーが試拌カップからあふれないように追加
する。次に試拌カップを粘度計に取付け、ミクシング（
混合）用のスピンドル（ミキサー）３を用いて撹拌し、
そのトルクを測定して粘度を換算する。To make this slurry, place alumina balls (
Place 3 new containers and wrap Teflon sealing tape around the mouth of the container. Methyl ethyl ketone (MBK) in the above container
About 23 g of a mixed solvent of and acrylic resin was added thereto, and about 20 g of the above powder was added thereto, taking care not to spill it, and the mixture was stirred and mixed for about 1 minute to create a slurry. Next, after confirming that there is no precipitate in the prepared slurry, put approximately 1/2 of the slurry 2 into the test stirring cup 1 of the viscometer shown in Figure 1, and turn on the spindle = 18. Add so it doesn't overflow. Next, attach the test cup to the viscometer and mix (
Stir using spindle (mixer) 3 for mixing),
The torque is measured and the viscosity is converted.
第２図は本発明方法によって得みれたセラミック粒径（
ＩＭ）とスラリー粘度（ＣＰ）の関係を示す検量線図で
ある。Figure 2 shows the ceramic particle size (
It is a calibration curve diagram showing the relationship between IM) and slurry viscosity (CP).
次に被測定粉末（上記と同種のアルミナ・ホウケイ酸ガ
ラスからなるガラス・セラミック粉末）を上記と同様の
方法で粘度（ＣＰ）を測定した所、はＮ’１ＯＯＯであ
り第２図からそのセラミック粉末の粒径が約２．４程度
であることがわかった。同様に同一ロットの粉末の粘度
を測定することができた。Next, the viscosity (CP) of the powder to be measured (a glass/ceramic powder made of the same kind of alumina/borosilicate glass as above) was measured in the same manner as above, and it was found that It was found that the particle size of the powder was about 2.4. Similarly, the viscosity of powders from the same lot could be measured.
以上説明した様に本発明によれば、予め粉末の粘度と粒
度（粒径）の検量線を得ているので粘度（ミキシングの
トルクに対応）を知ることにより微小な粒径の差異を信
頼性よく評価することができる。As explained above, according to the present invention, a calibration curve of powder viscosity and particle size (particle size) is obtained in advance, so by knowing the viscosity (corresponding to mixing torque), minute differences in particle size can be reliably determined. can be evaluated well.
第１図は本発明に係るスラリーの粘度測定法を示す概略
図であり、
第２図は本発明に係るスラリー（セラミック粉未含有）
粘度とセラミック粉末粒径の関係を示す検量線を示す図
である。
１・・・試拌カップ、 ２・・・スラリー、３・
・・ミキシングスピンドル（ミキサー）。FIG. 1 is a schematic diagram showing a method for measuring the viscosity of a slurry according to the present invention, and FIG. 2 is a diagram showing a slurry according to the present invention (not containing ceramic powder).
FIG. 3 is a diagram showing a calibration curve showing the relationship between viscosity and ceramic powder particle size. 1...Testing cup, 2...Slurry, 3.
...Mixing spindle (mixer).
Claims (1)
溶剤と樹脂とを混合して粉末混合融液を作成し、前記粉
末混合融液を撹拌して撹拌時のモータのトルクを測定す
ることにより粘度に換算し、前記粒度と粘度の複数の関
係を求めて得られた検量線を作成した後、前記粉末と同
種の被測定粉末の粘度を上記方法で求めて前記検量線か
ら前記被測定粉末の粒度を求めることを特徴とする粉末
の粒度測定方法。1. When measuring the particle size of powder, mix the powder whose particle size is known in advance, a solvent, and a resin to create a powder mixed melt, stir the powder mixed melt, and measure the torque of the motor during stirring. After converting it into viscosity by calculating a plurality of relationships between the particle size and viscosity and creating a calibration curve obtained, the viscosity of a powder to be measured of the same type as the powder is determined by the above method and the viscosity is calculated from the calibration curve. A method for measuring the particle size of powder, characterized by determining the particle size of the powder to be measured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19310990A JPH0480639A (en) | 1990-07-23 | 1990-07-23 | Measuring method for particle size of powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19310990A JPH0480639A (en) | 1990-07-23 | 1990-07-23 | Measuring method for particle size of powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0480639A true JPH0480639A (en) | 1992-03-13 |
Family
ID=16302400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19310990A Pending JPH0480639A (en) | 1990-07-23 | 1990-07-23 | Measuring method for particle size of powder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0480639A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007040770A (en) * | 2005-08-02 | 2007-02-15 | Sysmex Corp | Powder measuring system and method |
-
1990
- 1990-07-23 JP JP19310990A patent/JPH0480639A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007040770A (en) * | 2005-08-02 | 2007-02-15 | Sysmex Corp | Powder measuring system and method |
| JP4642585B2 (en) * | 2005-08-02 | 2011-03-02 | シスメックス株式会社 | Powder measuring system and powder measuring method |
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