| Preparation and properties of superfine Mg（OH）2 flame retardant |
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| 作者单位： | School of Metallurgical Science and Engineering Central South University Changsha 410083 China，School of Metallurgical Science and Engineering Central South University Changsha 410083 China |
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| 基金项目： | Project（2002-G-101 ） supported by the Key Program of Science and Technology of Qinghai Province, China. |
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| 摘 要： | 1 Introduction With the fast development of the macromolecule industry,the macromolecule synthetic materials such as plastic, synthetic rubber and synthetic fibre are used in a wide range of fields of building materials, household appliances, plane and au…
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| 关 键 词： | 阻燃剂 卤水 氨水 氢氧化镁 制备 性能 |
| 收稿时间： | 2005-06-08 |
| 修稿时间： | 2005-09-05 |
Preparation and properties of superfine Mg(OH)2 flame retardant |
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| Authors: | XU Hui DENG Xin-rong |
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| Affiliation: | 1. Institute for Polymers, Composites and Biomaterials (IPCB) - CNR, P.le E. Fermi 1, 80055, Portici, NA, Italy;2. Institute for Macromolecular Studies (ISMAC) - CNR, Via E. Bassini 15, 20133, Milano, Italy;3. Polytechnic of Turin, Alessandria Campus, UdR INSTM of Turin, V.le Teresa Michel 5, 15121, Alessandria, Italy;4. Technological District on Engineering of Polymeric and Composite Materials and Structures (IMAST), P.zza Bovio 22, 80133, Napoli, Italy;1. School of Resources and Civil Engineering, Northeastern University, Shenyang, Liaoning, 110819, China;2. The Robert M. Buchan Department of Mining, Queen’s University, Kingston, Ontario, K7L 3N6, Canada;1. State Key Laboratory of Fire Science, University of Science and Technology of China, 96 Jinzhai Road, Hefei 230026, PR China;2. Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China, 96 Jinzhai Road, Hefei 230026, PR China;3. Department of Architecture and Civil Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China;1. School of Chemistry and Materials Science, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui, 230026, PR China;2. State Key Laboratory of Fire Science, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui, 230026, PR China;3. State Key Laboratory of Environmental Adaptability for Industrial Products, China National Electric Apparatus Research Institute Co., Ltd., Guangzhou 510663, China;1. State Key Laboratory of Fire Science, University of Science and Technology of China, Anhui 230026, PR China;2. Suzhou Key Laboratory of Urban Public Safety, Suzhou Institute for Advanced Study, University of Science and Technology of China, Suzhou, Jiangsu 215123, PR China |
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| Abstract: | Preparation of superfine magnesium hydroxide with the bittern and ammonia was studied. The properties of the products were analyzed by laser granularity, X-ray diffraction, scanning electron microscope, the limiting oxygen index and the wetting angle measurements. The results show that the mean particle size of the magnesium hydroxide is about 230 nm with a platelet shape and the specific surface area is about 48 m2/g when the temperature is 55 °C, and the ammonia and bittern are instilled simultaneously during the reaction process. After the modification, the limiting oxygen index and physical chemistry performance of the magnesium hydroxide were examined. The results show that the contact angle of magnesium hydroxide is 132.5° and the limiting oxygen index is 31.5 %, indicating that the modified magnesium hydroxide is an effective flame retardant and can be applied as flame retardant additives of the macromolecule compounds such as plastic, synthetic rubber and synthetic fibre. |
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| Keywords: | bittern ammonia magnesium hydroxide Mg(OH)2 flame retardants limiting oxygen index |
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