JP2016023095A5 - - Google Patents
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- JP2016023095A5 JP2016023095A5 JP2014146691A JP2014146691A JP2016023095A5 JP 2016023095 A5 JP2016023095 A5 JP 2016023095A5 JP 2014146691 A JP2014146691 A JP 2014146691A JP 2014146691 A JP2014146691 A JP 2014146691A JP 2016023095 A5 JP2016023095 A5 JP 2016023095A5
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- Prior art keywords
- circularity
- particles
- circumference
- average
- particle
- Prior art date
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- 239000002245 particle Substances 0.000 description 6
- 229910052809 inorganic oxide Inorganic materials 0.000 description 2
- 239000000945 filler Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000001878 scanning electron micrograph Methods 0.000 description 1
- 238000005118 spray pyrolysis Methods 0.000 description 1
Description
本発明の無機酸化物微小中空粒子の形状は、図１〜図４から明らかなように、球状であり、平均円形度は０．８５以上である。このような形状は、噴霧熱分解法により製造することにより達成される。
ここで、円形度は、走査型電子顕微鏡写真から粒子の投影面積（Ａ）と周囲長（ＰＭ）を測定し、周囲長（ＰＭ）に対する真円の面積を（Ｂ）とすると、その粒子の円形度はＡ／Ｂとして表される。そこで、試料粒子の周囲長（ＰＭ）と同一の周囲長を持つ真円を想定すると、周囲長はＰＭ＝２πｒ、面積はＢ＝πｒ2であるから、Ｂ＝π×（ＰＭ／２π）2となり、この粒子の円形度は、円形度＝Ａ／Ｂ＝Ａ×４π／（ＰＭ）2として算出される。１００個の粒子について円形度を測定し、その平均値でもって平均円形度とする。なお、本発明の無機酸化物微小中空粒子は、各種フィラーとして混合したときの分散性、混合性など点から、平均円形度は、０．８５以上、好ましくは０．９０以上である。
As apparent from FIGS. 1 to 4, the shape of the inorganic oxide micro hollow particle of the present invention is spherical, and the average circularity is 0.85 or more. Such a shape is achieved by manufacturing by a spray pyrolysis method.
Here, the circularity is determined by measuring the projected area (A) and the perimeter (PM) of a particle from a scanning electron micrograph, and assuming that the area of a perfect circle with respect to the perimeter (PM) is (B). Circularity is expressed as A / B. Therefore, assuming a perfect circle having the same circumference as the circumference of the sample particle (PM), the circumference is PM = 2πr and the area is B = πr 2 , so B = π × (PM / 2π) 2. Thus, the circularity of the particles is calculated as circularity = A / B = A × 4π / (PM) 2 . The circularity is measured for 100 particles, and the average value is defined as the average circularity. The inorganic oxide fine hollow particles of the present invention have an average circularity of 0.85 or more, preferably 0.90 or more from the viewpoint of dispersibility and mixing properties when mixed as various fillers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014146691A JP6324247B2 (en) | 2014-07-17 | 2014-07-17 | Inorganic oxide micro hollow particles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014146691A JP6324247B2 (en) | 2014-07-17 | 2014-07-17 | Inorganic oxide micro hollow particles |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2016023095A JP2016023095A (en) | 2016-02-08 |
| JP2016023095A5 true JP2016023095A5 (en) | 2017-06-08 |
| JP6324247B2 JP6324247B2 (en) | 2018-05-16 |
Family
ID=55270202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2014146691A Active JP6324247B2 (en) | 2014-07-17 | 2014-07-17 | Inorganic oxide micro hollow particles |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP6324247B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6588365B2 (en) * | 2016-03-14 | 2019-10-09 | 太平洋セメント株式会社 | Inorganic oxide micro hollow particles |
| JP6807711B2 (en) * | 2016-11-16 | 2021-01-06 | 太平洋セメント株式会社 | Method for producing hollow oxide particles |
| JP6975575B2 (en) * | 2017-08-04 | 2021-12-01 | 太平洋セメント株式会社 | Oxide hollow particles |
| JP7117186B2 (en) * | 2018-01-24 | 2022-08-12 | 太平洋セメント株式会社 | Spray pyrolysis equipment |
| JP7337483B2 (en) * | 2018-03-26 | 2023-09-04 | 太平洋セメント株式会社 | hollow particles |
| JP6959467B1 (en) * | 2021-03-29 | 2021-11-02 | 太平洋セメント株式会社 | Inorganic oxide hollow particles |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0796165A (en) * | 1992-12-11 | 1995-04-11 | Asahi Glass Co Ltd | Production of crystalline fine hollow body and crystalline fine hollow body |
| JP2002037645A (en) * | 2000-05-19 | 2002-02-06 | Asahi Glass Co Ltd | Fine hollow aluminosilicate glass ball and its manufacturing method |
| JP2013136469A (en) * | 2011-12-28 | 2013-07-11 | Taiheiyo Materials Corp | High viscosity mixture containing hollow fine particle, and hollow fine particle used for this mixture |
| JP6191987B2 (en) * | 2012-09-26 | 2017-09-06 | 学校法人日本大学 | Inorganic hollow particles and method for producing the same |
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2014
- 2014-07-17 JP JP2014146691A patent/JP6324247B2/en active Active
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