By Ilias Belharouak, Vilas G. Pol
This booklet presents a great one-stop source for figuring out an important present matters within the examine and advances in inorganic phosphate materials.Content:
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Extra resources for Advances in Inorganic Phosphate Materials: Ceramic Transactions, Volume 233
Alternating gas flow started with humid ammonia (for 3min) and then dry air (for 15min), and total reaction time longer than 93min (finishing with humid ammonia) and reaction temperature of 270 to 290 °C gave an excellent result. Typical particle-size distribution of form II APP prepared Table 3. 9 0 by uncontrolled and controlled processes is listed in Table 3. The result shows that the controlled process gives product not containing particles having the size larger than 4 μηι and average particle size was about 2μιη.
4 M. Watanabe, M. Watanabe, M. Sakurai and H. Suzuki, Preparation of Ammonium Polyphosphate Form Π from the System of Ammonium Orthophosphate-Urea, Bull. Chem. Soc. , 73, 115-119(2000). 5 M. Watanabe, K. Yano, H. Suzuki and M. Sakurai, Dry Synthetic Process of Ammonium Polyphosphate Form V from the System of Ammonium Orthophosphate-Urea, Phos. Res. , 10, 94-99(1999) 6 H. Suzuki, M. Sakurai and M. Watanabe, Development of Preparation Process of Ammonium Polyphosphate Form V, J. Soc. Inorg. Mater.
The result shows that the controlled process gives product not containing particles having the size larger than 4 μηι and average particle size was about 2μιη. Solubility of the APP obtained in this experiment was very low (3 to 4* 10"3g/100 cm3 of water). The low solubility is very important to prevent bleeding when APP is used as flame retardant in organic polymer materials. 2. 1 Accordingly, easy and green chemical production technique was investigated by using the system of ammonium orthophosphate and urea.
Advances in Inorganic Phosphate Materials: Ceramic Transactions, Volume 233 by Ilias Belharouak, Vilas G. Pol