油封类
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类别 |
油封类(Oil seal) |
胶种类型 |
NBR |
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配方编号 |
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检测项目 |
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A |
测试条件 |
常规物性 |
单位 |
测试方法 |
典型值 |
典型值 |
典型值 |
|
23±2°C |
硬度(Hardness) |
邵氏A(Shore A) |
GB/T531 |
60 |
70 |
75 |
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拉伸强度(Tensile strength) |
兆帕(Mpa) |
GB/T528 |
13 |
15 |
16 |
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扯断伸长率(Elongation at Break) |
% |
547 |
486 |
431 |
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M300%定伸应力(300%Modulus) |
兆帕(Mpa) |
9.6 |
11.3 |
13.2 |
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比重(Specific Gravity) |
g/cm3 |
GB/T533 |
1.2 |
1.23 |
1.25 |
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B |
(100°Cx70H x25%) |
压缩永久变形(Compression set) |
% |
GB/T7759 |
21 |
18 |
19 |
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C |
热空气老化(Heat aging resistance ) |
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100°Cx70H |
硬度变化(Change in hardness) |
邵氏A(Shore A) |
GB/T3512 |
8 |
5 |
5 |
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拉伸强度变化率 (Change in Tensile strength) |
% |
12 |
8 |
7 |
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扯断伸长率变化率 (Change in Elongation at Break) |
% |
-20 |
-17 |
-18 |
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D |
耐油性育 |
扌测试(Fluid resistance ) 901#Oil |
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100°Cx70H |
硬食变化(Change in hardness) |
邵氏A(Shore A) |
GB/T1690 |
11 |
8 |
6 |
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体积变化(Change in volume) |
% |
-14 |
-9 |
-8 |
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E |
耐油性育 |
扌测试(Fluid resistance ) 903#Oil |
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100°Cx70H |
硬建变化(Change in hardness) |
邵氏A(Shore A) |
GB/T1690 |
-6 |
-7 |
-11 |
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体积变化(Change in volume) |
% |
12 |
14 |
15 |
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