金属氧化物对共聚氟硅橡胶耐热性能的影响  

Effects on the heat resistant properties of copolymerized fluorosilicone rubber to metal oxide

作　　者：苏正涛[1] 米志安[1] 王景鹤[1] 

机构地区：[1]北京航空材料研究院,北京100095

出　　处：《有机硅材料》2004年第1期13-14,21,共3页Silicone Material

摘　　要：研究了二氧化铈、三氧化二铁和气相法二氧化钛等金属氧化物对共聚氟硅橡胶SKTFT -2 5耐热性能的影响。结果表明 ,二氧化铈和三氧化二铁能明显提高共聚氟硅橡胶在 2 0 0℃× 70h和 2 5 0℃× 2 4h热空气老化条件下的耐热性能 ;而气相法二氧化钛则能明显提高共聚氟硅橡胶在 2 0 0℃× 70h热空气老化条件下的耐热性能 ,但严重降低了共聚氟硅橡胶在 2 5 0℃× 2 4h热空气老化条件下的耐热性能。The effects on the heat resistant properties of the metal oxides,such as ceria,ferric oxide and fumed titania etc,to the copolymerized fluorosilicone rubber SKTFT-25.The result showed that ceria and ferric oxide could remarkably improve the heat resistant properties of copolymerized fluorosilicone rubber under the air aging condition of 200 ℃×70 h and 250 ℃×24 h.On the other hand,the fumed titania could remarkably improve the heat resistant properties of copolymerized fluorosilicone rubber under the air aging condition of 200 ℃×70 h,but severely degrade the heat resistant properties of copolymerized fluorosilicone rubber under the air aging condition of 250 ℃×24 h.

关 键 词：金属氧化物 共聚氟硅橡胶 耐热性能 二氧化铈 三氧化二铁 气相法二氧化钛 老化 

分 类 号：TQ333[化学工程—橡胶工业]