Silicone 705 is a specialty silicone fill fluid intended for use in applications with higher operating
temperatures beyond the maximum limit of Silicone 704. Silicone 705 has a higher molecular
weight than Silicone 704, which extends seal operating temperatures. Its primary limitation is
high viscosity, so heat tracing of capillaries or use of the Rosemount Thermal Ranger Expander is
often needed for acceptable response time. The 0.03-in. (0.7 mm) ID capillary is not allowed for
Silicone 705 because of its higher viscosity.
For applications below 14.7 psia (1 bar-a) use Silicone 705 for Vacuum Applications found in
Section 1.7.
类型 单一组分硅材料
物理形式 流体
特性 热稳定性、低水汽压力和低回流率、抗氧化、水解和辐射
主要用途 用于制造超高和超洁净真空
特性
DOW CORNING 705的性能参数
极限真空度 托 无阱 10-9-10-10
有阱 到10-11
分子类型 Penta phenyltri-methyltrisiloxane
分子重量 546
蒸汽压力方程式 log10P=A-B/T(P:蒸汽压力,托;T:*温度,°K) A=12.31B=6490
利益
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