高速気流中衝撃法による微粒子の混合と色特性
スポンサーリンク
概要
- 論文の詳細を見る
Coarse white polyethylene particles were coated by fine pigment particles of red iron oxide by high-speed rotational impact blending and by hand mixing in a mortar. As the dark pigments became progressively distributed over the coarse particle surfaces, the color characteristics of the resulting powder changed. First, the effects of the mixing ratio of fine particles, the treatment time, the rotational speed of a rotor and the mean diameter of coarse particles were investigated with respect to the degree of mixing of the total mixture. The value of the degree of mixing was determined directly and precisely by chemical analysis. It was found that the degree or mixing increased with the treatment time at a certain mixing ratio of fine particles, corresponding to a coating ratio over coarse particles of less than 100% of closest packing on a number basis, but decreased at the mixing ratio of more than 100% by rotational impact. Micromixing to coat individual coarse particles was more easily and rapidly achieved by rotational impact blending as compared with hand mixing. Coating coarser particles at higher rotor speeds was more suitable for achieving homogenous mixing. In addition, it was found that the lightness of mixed particles decreased to lower than that by hand mixing due to the increased degree of micing, but remained almost constant during the process of rotational impact blending, with its slight increase being due to embedment of fine particles by frequent impact. This means that the lightness of particles reached a steady state in a very short mixing time, resulting in the reduction of the amount of fine particles for the same lightness effect when using the high-speed rotational impact blender.
- 2000-04-01
著者
-
内山 智幸
北海道立工業試験場
-
篠原 邦夫
北海道大学大学院工学研究科物質工学専攻
-
梁 華
北海道大学大学院工学研究科物質工学専攻
-
篠原 邦夫
北海道大学大学院工学研究科物質工学専攻微粒子工学研究室
-
篠原 邦夫
Division Of Materials Science And Engineering Graduate School Of Engineering Hokkaido University
-
篠原 邦夫
北海道大学
-
梁 華
北海道大学大学院工学研究科 物質工学専攻
関連論文
- 106 含浸珪藻土粒を用いた吸放湿型除湿・熱交換換気装置の開発とその性能把握(その2)
- 高速気流中衝撃法による微粒子の混合と色特性
- デンプンを分布したワックスで充填された被覆粒子構造体の溶出特性
- 高速気流中衝撃法による多成分異径シリカ子粒子のポリエチレン核粒子への被覆過程
- 精密研磨における研磨面プロファイルの評価
- 粒子形状解析に基づく研磨特性評価
- 多結晶ダイヤモンド砥粒の形状と研摩特性
- 高速気流中衝撃法による粗粒子間移動に及ぼす微粒子の固定化効果
- 粒子形状情報抽出(角張り, 非対称性, など)
- 異形粒子成形層の壁摩擦特性