| 粉状填料含水率对氟橡胶性能的影响 |
| Effect of Moisture Content of Powder Filler on Properties of Fluororubber |
| 投稿时间：2020-01-10 修订日期：2020-01-10 |
| DOI：10.12136/j.issn.1000-890X.2020.06.0434 |
| 中文关键词: 氟橡胶 粉状填料 含水率 硫化特性 耐热空气老化性能 耐介质性能 |
| 英文关键词: fluororubber powder filler moisture content vulcanization charecteristics hot air aging resistance oil resistance |
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| 中文摘要: |
| 研究粉状填料（以下简称填料）含水率对氟橡胶硫化特性、物理性能、耐热空气老化性能和耐介质性能的影响。结果表明：以氟化钙为主的填料（氟化钙＋活性氧化镁＋氢氧化钙）经历不同温湿度环境时会发生显著的吸潮现象；随着填料含水率的增大，氟橡胶的硫化速率增大；填料吸潮会引起老化前后氟橡胶的拉断伸长率波动；填料含水率增大会造成200 ℃×24 h热空气老化后和150 ℃×24 h航空煤油RP-3浸泡后氟橡胶的压缩永久变形增大；填料含水率对航空煤油RP-3浸泡前后氟橡胶的质量变化率和体积变化率没有显著影响。 |
| 英文摘要: |
| The effects of the moisture content of powder filler（hereinafter referred to as filler） on the vulcanization characteristics，physical properties，hot air aging resistance and oil resistance of fluororubber were studied. The results showed that the calcium fluoride-based filler（calcium fluoride＋active magnesium
oxide ＋ calcium hydroxide） had significant moisture absorption when it experienced different temperature and humidity. The vulcanization rate of fluororubber increased with the increase of water content of filler.The moisture absorption of filler would cause the fluctuation of the tensile elongation of fluororubbers before
and after aging. The increase of moisture content of filler would cause the increase of compression set after 200 ℃×24 h aging in hot air or after 150 ℃×24 h soaking in aviation kerosene RP-3 fuel. The moisture content of filler had less significant effect on the mass and the volume change rate of fluororubber before and
after soaking in aviation kerosene RP-3 fuel. |
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