| 金属氢氧化物对室温硫化硅橡胶陶瓷化性能的影响 |
| Effect of Metal Hydroxides on Ceramic Properties of RTV Silicone Rubber |
| 投稿时间：2020-07-07 修订日期：2020-07-07 |
| DOI：10.12136/j.issn.1000-890X.2021.02.0098 |
| 中文关键词: 硅橡胶 室温硫化 金属氢氧化物 氢氧化铝 氢氧化镁 陶瓷化 三点弯曲强度 |
| 英文关键词: silicone rubber room temperature vulcanization metal hydroxide aluminum hydroxide magnesium hydroxide ceramization three-point flexural strength |
| 基金项目:广东省自然科学基金资助项目（2018A0303130023）；广州市科技计划项目（201902010059）；中山市科技计划项目（2019AG022，2020AG022）；中央高校基本科研业务费（成果转化）项目（2018KZ07） |
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| 中文摘要: |
| 以α，ω-二羟基聚二甲基硅氧烷（107硅橡胶）为基体，金属氢氧化物（氢氧化铝和氢氧化镁）为陶瓷化助剂，制备可陶瓷化室温硫化（RTV）硅橡胶，研究金属氢氧化物对硅橡胶性能的影响。结果表明：与未添加金属氢氧化物的硅橡胶相比，添加氢氧化镁的硅橡胶的力学性能明显降低，而添加氢氧化铝的硅橡胶的力学性能变化不明显；与添加氢氧化镁的硅橡胶相比，添加氢氧化铝的硅橡胶在1 000 ℃烧蚀后所得陶瓷体的外观尺寸更加稳定，形状保持更好，陶瓷体断面更致密；添加氢氧化铝的硅橡胶陶瓷体的三点弯曲强度比未添加金属氢氧化物的硅橡胶陶瓷体显著增大。 |
| 英文摘要: |
| Ceramizable room-temperature-vulcanized（RTV） silicone rubber were prepared with
α，ω-dihydroxyl polydimethylsiloxane（107 silicone rubber） as the matrix and metal hydroxides（aluminum hydroxide and magnesium hydroxide） as the ceramic additives.The effects of metal hydroxides on the properties of the silicone rubber were investigated.The results showed that the mechanical properties of the silicone rubber with magnesium hydroxide decreased significantly，while the mechanical properties of the silicone rubber with aluminum hydroxide did not change significantly.The ceramic residue derived from the silicone rubber with aluminum hydroxide sintered at 1 000 ℃ showed more stable appearance and size，better shape retention and more compact ceramic residue section than those with magnesium hydroxide.The increment of the three-point flexural strength of the ceramic residue derived from the silicone rubber with aluminum hydroxide increased significantly compared with silicone rubber without metal hydroxide. |
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