有机硅材料
有機硅材料
유궤규재료
SILICONE MATERIAL
2013年
5期
358-361
,共4页
郭琳琳%肖雯静%吕亚非%齐士成
郭琳琳%肖雯靜%呂亞非%齊士成
곽림림%초문정%려아비%제사성
室温硫化%氟硅密封胶%正硅酸乙酯%甲基三丁酮肟基硅烷%甲基三乙酰氧基硅烷
室溫硫化%氟硅密封膠%正硅痠乙酯%甲基三丁酮肟基硅烷%甲基三乙酰氧基硅烷
실온류화%불규밀봉효%정규산을지%갑기삼정동우기규완%갑기삼을선양기규완
RTV%fluorosilicon%sealant%ethyl silicate%trimethylethylketoneoximesilane%methyl triace-toxyl silane
以自制的端羟基氟硅共聚物为基础聚合物, ZnO为填料,二月桂酸二丁基锡为催化剂,分别采用正硅酸乙酯、甲基三丁酮肟基硅烷( D31)、甲基三乙酰氧基硅烷( D17)为交联剂,制得脱醇型、脱酮肟型和脱醋酸型双组分室温硫化( RTV-2)氟硅密封胶。探讨了硫化类型对氟硅密封胶表干时间、耐热空气老化性能、耐油性能、热失重性能以及动态热机械性能的影响。结果表明:脱酮肟型氟硅密封胶具有良好的综合性能:玻璃化转变温度为-114℃;热质量损失率为10%时的温度达到482.2℃;经200℃×24 h老化后,拉伸强度降低4%,拉断伸长率降低7%。
以自製的耑羥基氟硅共聚物為基礎聚閤物, ZnO為填料,二月桂痠二丁基錫為催化劑,分彆採用正硅痠乙酯、甲基三丁酮肟基硅烷( D31)、甲基三乙酰氧基硅烷( D17)為交聯劑,製得脫醇型、脫酮肟型和脫醋痠型雙組分室溫硫化( RTV-2)氟硅密封膠。探討瞭硫化類型對氟硅密封膠錶榦時間、耐熱空氣老化性能、耐油性能、熱失重性能以及動態熱機械性能的影響。結果錶明:脫酮肟型氟硅密封膠具有良好的綜閤性能:玻璃化轉變溫度為-114℃;熱質量損失率為10%時的溫度達到482.2℃;經200℃×24 h老化後,拉伸彊度降低4%,拉斷伸長率降低7%。
이자제적단간기불규공취물위기출취합물, ZnO위전료,이월계산이정기석위최화제,분별채용정규산을지、갑기삼정동우기규완( D31)、갑기삼을선양기규완( D17)위교련제,제득탈순형、탈동우형화탈작산형쌍조분실온류화( RTV-2)불규밀봉효。탐토료류화류형대불규밀봉효표간시간、내열공기노화성능、내유성능、열실중성능이급동태열궤계성능적영향。결과표명:탈동우형불규밀봉효구유량호적종합성능:파리화전변온도위-114℃;열질량손실솔위10%시적온도체도482.2℃;경200℃×24 h노화후,랍신강도강저4%,랍단신장솔강저7%。
The dealcoholic , ketonic oxime and acetate RTV-2 fluorosilicone sealants were prepared by self-made hydroxyl-terminated fluorosilicone copolymer as the polymer matrix , ZnO as the filler , dibutyltin di-laurate as the catalyst , ethyl orthosilicate , trimethylbutylketoneoximesilane ( D31) and triacetoxylmethylsilane ( D17 ) as the crosslinking agents , respectively .The effect of the different vulcanization reagents on the tack free time, the thermal aging properties in air , oil resistance performance , thermogravimetric performance and dynamic thermomechanical properties of fluorosilicone sealants was discussed .Results showed that the ketonic oxime fluorosilicone sealant had better physical and thermal properties with a glass transition temperature of-114℃, a temperature of 10%weight loss at 482.2℃, and a decrease of tensile strength and elongation at break of 4%and 7%, respectively after aging for 24 hours at 200 ℃.