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.
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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