| 摘要 |
PURPOSE:To provide excellent electric contact failure preventing performance, prolong each lifetime of parts and enhance reliability of the parts even in the case of coexistence with parts of a relay and the like by using amino denatured silicone oil including an amino group within a limited range. CONSTITUTION:Such silicone oil is used as to be expressed by a general unit formula and have an amine equivalent of 10,000-200,000 g/mol and viscosity of 10-100,000 cSt at 25 deg.C. The general unit formula is R<1>aR<2>bSiO4-a-b/2. wherein R<1> represents -R<3>-NH2 or -R<3>-NH2 or -R<3>-NHR<4>-NH2 (wherein R<3> and R<4> represent an alkylene group with carbon atoms of 1-8, respectively); R<2>, a uniequivalent hydrocarbon group with carbon atoms of 1-6; 0.0001<=a<=0.01; and 1.95<=a+b<=2.20. The amino denatured silicone oil including an amino group within a limited range exhibits an excellent effect of prevention of an electric contact failure due to low molecular siloxane. Consequently, it is possible to restrain an electric contact failure in a relay, a switch or the like to a low level, prolong a lifetime of parts, and enhance reliability of the parts. |
