シラスを原料とする微細中空ガラス球(シラスバルーン)について
スポンサーリンク
概要
- 論文の詳細を見る
In view of good properties of hollow glass micro-sphere such as lightness, thermal insulating and sound arresting properties, high melting point and incombustibility and ability to increase quantity, some new composites of unparalleled characteristics are being developed by mixing them into plastics, carbon, cement, lime and its kind and metals. For instance they are now being used in diverse fields for making synthetic wood, master model, electric accessories, materials of low thermal conductivity ceramics, including aircraft materials and submarine diver-ship materials, and their demand is rapidly increasing. So, some methods to produce them have been invented already, but as the processes of them are rather complicated and the materials are expensive, the production become very expensive, too. Hereon, we authors discovered that hollow glass micro-sphere can be produced from the "Shirasu", which is acidic volcanic ejecta and one of the unutilized mineral resources distributes widely in southern Kyushu and other districts in Japan, through simple and inexpensive method. Incidentally, we will call it as "Silas Balloons". We made up an apparatus for calcining of raw material, and investigated the conditions for production of Silas Balloons, bubbling and expansive mineral component in Shirasu, the effectiveness of processing of raw material and producibility of Silas Balloons from some Shirasu produced in various districts, and measured general characteristics of Silas Balloons. And following results have been obtained. 1) Using the Shirasu as the material, it is optimum to calcine it at a temperature about 1000℃ shortly within 60 seconds. 2) Maximum size of calcining material is 300μ to obtain hollow glass microsphere. 3) It has been found that bubbling and expansive mineral component in the Shirasu is volcanic glass, and more accurately, the effective H_2O contained in it is estimated the bubbling agent. 4) Enriching the volcanic glass in the material through processing of raw material, especially through classification and magnetic separation, yield of Silas Balloons has considerably increased. 5) Some Shirasu produced in various districts would be able to be used as materials of Silas Balloons. 6) Compared with the known micro-sphere heretofore such as Microballoons of Emerson and Cuming Inc., Silas Balloons is superior to the former in its strength, melting point and hygroscopic property, though inferior to the former in its appearance.
- 社団法人日本セラミックス協会の論文
- 1972-02-01
著者
関連論文
- スコリア溶融物の結晶化と物性に及ぼす添加物(ショ糖,CaO,MgO,SiO_2)の影響
- 天草陶石に含まれる粘土鉱物と陶土の性状について(I) : 原料陶石に含まれるセリサイトの性質
- 53.X線粉末プロファイル解析法による天草陶石の鉱物組成定量について
- シラス微粒中空ガラス (特集 加工技術が引き出すガラス系素材の新機能)
- アルミナ水和物被覆火山ガラス微粒子の加熱発砲性(2)
- 微粒中空ガラスフィラ-製造プロセスおよび装置の検討
- アルミナ水和物被覆火山ガラス微粒子の加熱発泡性
- 工業材料としてのシラス(特別研究)
- 風化花崗岩の選別利用について
- シラスの分離回収ならびにその有効利用--主として,シラスバル-ンの製造について (産業廃棄物の処理とその有効利用)
- 風化花崗岩に含まれる雲母鉱物の2,3の選鉱特性
- シラスを原料とする微細中空ガラス球(シラスバルーン)について
- シラスを主原料とする窒化焼結体の製造
- シラス中の火山ガラスの加熱発泡性について
- 光触媒としての酸化チタン被覆微細中空ガラス球の応用
- 微粒シラスバルーン-セメント系コンパウンドの押出成形性
- 酸化チタン被覆微細中空ガラス球の調製
- Tetra-n-Butoxy Titaniumからの加水重合体の加熱分解法による酸化チタン被覆中空シラス球状体の開発
- チタニア水和物を被覆した微粒火山ガラスを原料とするTiO_2被覆微細中空ガラス球の調製
- 風化花崗岩に含まれる粘土とその窯業原料としての利用