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Effect of metal oxide on the heat resistance property of RTV fluorosilicone sealant
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Science & Technology Review | 2021, 39(9) : 56 - 60
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Science & Technology Review | 2021, 39(9): 56-60
• Exclusive: Aircraft materials and manufacture technology •
Effect of metal oxide on the heat resistance property of RTV fluorosilicone sealant
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GAO Yuanfeng, BAO Chuanlei, XU Zhenkun, ZHENG Ziqiang, WU Songhua
Affiliations
    Institute of Rubber and Sealing, AECC Beijing Institute of Aeronautical Materials, Beijing 100095, China
Published: 2021-05-13 doi: 10.3981/j.issn.1000-7857.2021.09.006
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Dehydrogenated curing fluorosilicone sealant is prepared at room temperature by mixing fluorosilicone liquid rubber, fumed silica, and metal oxide. Then heat resistance performance is investigated by thermal aging experiment at different temperatures (250 ℃ and 300 ℃). It is revealed that the heat resistance performance of rare earth metal oxide based fluorosilicone sealant is better than that of iron oxide at 250 ℃. However, when the temperature goes up to 300℃, the iron oxide based fluorosilicone sealant's heat resistance performance is better than the rare earth metal oxide's. Concerning the universality and economy of sealant, the iron oxide based fluorosilicone sealant possesses a wider application area.
fluorosilicone sealant  /  iron oxide  /  rare earth metal oxide  /  heat resistance performance  /  heat resistant agent
GAO Yuanfeng, BAO Chuanlei, XU Zhenkun, ZHENG Ziqiang, WU Songhua. Effect of metal oxide on the heat resistance property of RTV fluorosilicone sealant[J]. Science & Technology Review, 2021 , 39 (9) : 56 -60 . DOI: 10.3981/j.issn.1000-7857.2021.09.006
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doi: 10.3981/j.issn.1000-7857.2021.09.006
  • Receive Date：2020-05-25
  • Online Date：2021-06-08
  • Published：2021-05-13
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  • Received：2020-05-25
  • Revised：2020-11-03
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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