| 导热绝缘防沉降室温硫化硅橡胶的制备与性能研究 |
| Preparation and Properties of Anti-Settling Electrically-Insulated and Thermally-Conductive RTV Silicone Rubber |
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| DOI： |
| 中文关键词: 室温硫化硅橡胶 防沉降 导热性能 绝缘性能 |
| 英文关键词: RTV silicone rubber anti-sedimentation thermal conductivity insulating property |
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| 中文摘要: |
| 以α，ω-甲氧基封端聚二甲基硅氧烷为基体，三氧化二铝（Al2O3）为导热填料，氧化锌（ZnO）、纳米二氧化钛（TiO2）、纳米二氧化硅（SiO2）和纳米Al2O3为防沉降添加剂，制备单组分导热绝缘防沉降室温硫化硅橡胶，研究其防沉降、导热和绝缘性能。结果表明，当ZnO、纳米TiO2、纳米SiO2和纳米Al2O3单一添加且用量分别为8，0.8，0.8和0.5份，且Al2O3和防沉降添加剂总用量为75份时，硅橡胶的防沉降性能优良，热导率增大，且物理性能和绝缘性能变化很小。 |
| 英文摘要: |
| The thermally conductive and electrical insulated 1-part RTV silicone rubber with good anti-sedimentation property was prepared by using ZnO，nano TiO2，nano SiO2 and nano Al2O3 as anti-settling agents.The original rubber was based on α，ω-alkyloxypolysiloxane as matrix material and Al2O3 as thermally conductive filler. The anti-sedimentation property，thermal conductivity and electrical insulating property of the obtained silicone rubber were investigated. The results showed that when a single anti-settling agent from ZnO，nano TiO2，nano SiO2 and nano Al2O3 was used and the addition levels for each of them were 8，0.8，0.8 and 0.5 phr, respectively，meanwhile the combined addition level of Al2O3 and anti-settling agent was 75 phr，the anti-sedimentation performance of silicone rubber was excellent，the thermal conductivity was improved，and the physical properties and insulating property changed little. |
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