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FOCUS on ESA 7250/7251/7255 A&B
ESA7250/7251/7255 A&B is a 2K Addition cure potting grade.
ESA 7250/7251/7255 A&B是双组分加成型有机硅灌封材料。
nOptically clear光学透明
nHigh strength silicone elastomer高强度有机硅弹性体
nA series of products from no adhesion to excellent adhesion on plastic substrates.这一系列产品从无粘接性到对塑料基材有较好的粘接性
ESA 7250/7251/7255 A&B are used in encapsulation applications requiring optical clarity.
ESA7250/7251/7255 A&B是灌封用光学透明级有机硅弹性体。
Typical properties主要性能 | ESA 7250 A&B | ESA 7251 A&B | ESA 7252 A&B |
Appearance外观 | Optical clear | Optical clear | Optical clear |
Mixing ratio (by weight) | 光学透明 | 光学透明 | 光学透明 |
配比（按重量） | 10:1 | 10:1 | 10:1 |
Viscosity粘度，cP | 4000 | 2500 | 6000 |
Pot life可使用时间，h | 4 | ﹥8 | 48 |
Curing condition固化条件 | 150℃×1h | 70℃×1h+150℃×1h | 150℃×1h |
Refractive index折射率 | 1.41 | 1.41 | 1.41 |
Light transmittance透光率 | ﹥95 | ﹥95 | ﹥97 |
Shore A Hardness硬度 | A52 | A30 | A62 |
Tensile Strength拉伸强度，MPa | 6.2 | 2.5 | 10.4 |
Tear Strength撕裂强度，kN/m | 4 | 2.5 | 2.4 |
Bonding effect粘接效果 | No无 | Good好 | Excellent优秀 |
Dielectric Strength绝缘强度，kV/mm | 20 | 20 | / |
Dielectric constant at 1kHz介电常数 | 2.7 | 2.7 | / |
Volume resistivity体积电阻，?.cm | 1×1015 | 1×1015 | 1×1015 |
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