CN108918342A - A kind of method of quick measurement powder real density - Google Patents
A kind of method of quick measurement powder real density Download PDFInfo
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- CN108918342A CN108918342A CN201810663467.2A CN201810663467A CN108918342A CN 108918342 A CN108918342 A CN 108918342A CN 201810663467 A CN201810663467 A CN 201810663467A CN 108918342 A CN108918342 A CN 108918342A
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- powder
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- real density
- immersion liquid
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
- G01N9/02—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity by measuring weight of a known volume
- G01N9/04—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity by measuring weight of a known volume of fluids
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- 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)
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- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The invention discloses a kind of methods of quickly measurement powder real density specially first to pour into the liquid tank of electronic balance the immersion liquid after degassing using the real density of density balance measurement powder, add suitable dispersing agent, obtain the density p of immersion liquidLiquid；Then equal-sized filter membrane is placed on the net in weighing, so that filter membrane is immersed in immersion liquid, and does not touch with liquid tank, after registration is stablized, peeling；Adding the weighed quality of institute is M1Drying powder, slight stirring excludes bubble therein, reads mass M after registration is stablized2；Finally utilize formula ρVery=(M1/M1‑M2)ρLiquidYou can get it powder real density ρVery.The present invention is easy to use, and easy to operate, measured value is accurate, can quickly measure the real density of powder.
Description
Technical field
The present invention relates to powder densities to measure field, and in particular to a method of quickly measurement powder real density.
Background technique
Powder real density is the ratio of powder quality Yu its true volume, and true volume does not include being present in inside powder granule
Closing cavity.So pore-free material must be used by measuring the real density of powder.According to the difference of measurement medium, powder is very close
The main measuring methods of degree can be divided into generator volume method and immersion method.
Generator volume method is the volume for replacing liquid assay samples to be discharged with gas.This method eliminates immersion method to sample
A possibility that dissolution, has the advantages that not damage sample, but is easily influenced by temperature when measurement, notes also leakage problem.
Immersion method is immersed in powder in the immersion liquid on easy wet granulate surface, and the volume of its excluded liquid is measured.This
Method must vacuum outgas to exclude bubble completely.Vacuum outgas operation can be used heating (boil) method and depressurize method or two methods it is same
Shi Bingyong is operated relatively complicated.
Summary of the invention
To solve the above problems, faster being surveyed the present invention provides a kind of more scientific, simpler, more easily
Determine the method for powder real density.
To achieve the above object, the technical scheme adopted by the invention is as follows：
A kind of method of quick measurement powder real density using the real density of density balance measurement powder, including walks as follows
Suddenly：
S1, the powder prepared is taken to be dried, weighing quality is M1Drying powder；
S2, it takes suitable immersion liquid to pour into beaker, then places the beaker and deaerated in advance in vacuum desiccator, calculate leaching
The density p of liquidLiquid；
S3, the immersion liquid after degassing to be poured into the liquid tank of electronic balance, the volume of immersion liquid is the 2/3 of liquid sump volume,
Suitable dispersing agent is added, makes powder rapid dispersion in a solvent；
S4, equal-sized filter membrane is placed on the net in weighing, so that filter membrane is immersed in immersion liquid, and do not occur with liquid tank
Touching, after registration is stablized, peeling；The weighed dry powder of institute is added, slight stirring excludes bubble therein, to registration
Mass M is read after stabilization2；
S5, according to Archimedes principle it is found that M1-ρLiquidGV=M2g；ρVery=M1/ V, it is therefore, available：ρVery=(M1/M1-
M2)ρLiquid, utilize the formula you can get it powder real density ρVery.(wherein M1For dry powder quality, ρLiquidFor fluid density, M2Exist for powder
Quality in liquid)
The invention has the advantages that：
Easy to use, easy to operate, measured value is accurate, can quickly measure the real density of powder.
Specific embodiment
In order to which objects and advantages of the present invention are more clearly understood, the present invention is carried out with reference to embodiments further
It is described in detail.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to limit this hair
It is bright.
Embodiment
S1,5g citric acid solid is weighed, be added in the water of 500ml, configuration density 0.975g/cm3Citric acid solution；
S2, the electroceramics powder prepared is taken to be dried, the electroceramics powder 0.1216g after weighing drying；
S3, it takes suitable citric acid solution to pour into beaker, then places the beaker and deaerated in advance in vacuum desiccator；
S4, the citric acid solution after degassing is poured into the liquid tank of electronic balance, the citric acid solution of addition need to flood
Powder upper surface is tested, suitable polyethylene glycol is added as dispersing agent；Equal-sized filter membrane is put on the net weighing, so that filter
Film is immersed in immersion liquid, and is not touched with liquid tank, is removed the peel after registration is stablized；
S5, the weighed electroceramics powder of institute is added into weighing net, slight stirring excludes bubble therein, stable to registration
Quality 0.0777g is read afterwards, then passes through following formula ρVery=(M1/M1-M2)ρLiquidIt calculates, can obtain powder density is 2.7006g/
cm3。
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the principle of the present invention, it can also make several improvements and retouch, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (2)
1. a kind of method of quickly measurement powder real density, it is characterised in that：Utilize the real density of density balance measurement powder.
2. a kind of method of quickly measurement powder real density as described in claim 1, it is characterised in that：Include the following steps：
S1, the powder prepared is taken to be dried, weighing quality is M1Drying powder；
S2, it takes suitable immersion liquid to pour into beaker, then places the beaker and deaerated in advance in vacuum desiccator, calculate immersion liquid
Density pLiquid；
S3, the immersion liquid after degassing to be poured into the liquid tank of electronic balance, the volume of immersion liquid is the 2/3 of liquid sump volume, then plus
Enter suitable dispersing agent, makes powder rapid dispersion in a solvent；
S4, equal-sized filter membrane is placed on the net in weighing, so that filter membrane is immersed in immersion liquid, and do not touch with liquid tank
It touches, after registration is stablized, peeling；The weighed dry powder of institute is added, slight stirring excludes bubble therein, steady to registration
Mass M is read after fixed2；
S5, formula ρ is utilizedVery=(M1/M1-M2)ρLiquidObtain powder real density ρVery。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810663467.2A CN108918342A (en) | 2018-06-25 | 2018-06-25 | A kind of method of quick measurement powder real density |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810663467.2A CN108918342A (en) | 2018-06-25 | 2018-06-25 | A kind of method of quick measurement powder real density |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108918342A true CN108918342A (en) | 2018-11-30 |
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| CN201810663467.2A Pending CN108918342A (en) | 2018-06-25 | 2018-06-25 | A kind of method of quick measurement powder real density |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1158418A (en) * | 1996-03-01 | 1997-09-03 | 中国科学院广州地球化学研究所 | gold density meter |
| CN1776399A (en) * | 2005-11-29 | 2006-05-24 | 吉林大学 | Ceramic powder true density measuring method |
| CN201229284Y (en) * | 2008-06-24 | 2009-04-29 | 上海舜宇恒平科学仪器有限公司 | Novel density measurement device |
| CN201340374Y (en) * | 2008-12-17 | 2009-11-04 | 西安航天化学动力厂 | Density measuring device for solid materials |
| CN202494612U (en) * | 2011-12-05 | 2012-10-17 | 深圳出入境检验检疫局工业品检测技术中心 | Liquid densimeter |
| CN103913399A (en) * | 2012-12-31 | 2014-07-09 | 宁波江丰电子材料有限公司 | Solid density measure method and method for detecting density qualification of target material |
| CN205719857U (en) * | 2016-05-09 | 2016-11-23 | 山东圣文环保科技有限公司 | Dust real density tester |
| CN106596330A (en) * | 2016-12-31 | 2017-04-26 | 从俊强 | Detection method for true density of iron-containing powder |
-
2018
- 2018-06-25 CN CN201810663467.2A patent/CN108918342A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1158418A (en) * | 1996-03-01 | 1997-09-03 | 中国科学院广州地球化学研究所 | gold density meter |
| CN1776399A (en) * | 2005-11-29 | 2006-05-24 | 吉林大学 | Ceramic powder true density measuring method |
| CN201229284Y (en) * | 2008-06-24 | 2009-04-29 | 上海舜宇恒平科学仪器有限公司 | Novel density measurement device |
| CN201340374Y (en) * | 2008-12-17 | 2009-11-04 | 西安航天化学动力厂 | Density measuring device for solid materials |
| CN202494612U (en) * | 2011-12-05 | 2012-10-17 | 深圳出入境检验检疫局工业品检测技术中心 | Liquid densimeter |
| CN103913399A (en) * | 2012-12-31 | 2014-07-09 | 宁波江丰电子材料有限公司 | Solid density measure method and method for detecting density qualification of target material |
| CN205719857U (en) * | 2016-05-09 | 2016-11-23 | 山东圣文环保科技有限公司 | Dust real density tester |
| CN106596330A (en) * | 2016-12-31 | 2017-04-26 | 从俊强 | Detection method for true density of iron-containing powder |
Non-Patent Citations (2)
| Title |
|---|
| 房迎春 等: "密度天平法测定聚乙烯树脂密度方法的探讨", 《中国塑料》 * |
| 王卓 等: "《材料科学与工程及金属材料工程专业实验教程》", 31 August 2013, 西南交通大学出版社 * |
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Application publication date: 20181130 |
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