| 氟橡胶低温脆化性能研究 |
| Study on Low Temperature Brittleness Property of FKM |
| 投稿时间：2018-04-17 修订日期：2018-04-17 |
| DOI：10.12136/j.issn.1000-890X.2019.06.0435 |
| 中文关键词: 氟橡胶 低温脆化性能 玻璃化温度 低温回缩温度 脆性温度 |
| 英文关键词: FKM low temperature brittleness property glass transition temperature low temperature retraction temperature brittleness temperature |
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| 摘要点击次数: 1985 |
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| 中文摘要: |
| 分析表征氟橡胶（FKM）低温脆化性能的玻璃化温度（Tg）、低温回缩温度（TR10）和脆性温度（Tbri）之间的关系，研究生胶、填料、混炼工艺等对二元和三元FKM胶料低温脆化性能的影响。结果表明：FKM的Tg与TR10相近，均能反映FKM分子链的低温运动和玻璃态温度；过氧化物硫化高氟FKM胶料的耐低温性能较好，双酚硫化二元FKM胶料的耐低温性能较差；填充炭黑N774的FKM胶料耐低温性能较好；塑炼次数对FKM胶料的低温脆化性能影响小。 |
| 英文摘要: |
| The relationship between the glass transition temperature（Tg），low temperature retraction temperature（TR10） and brittleness temperature（Tbri） of fluoroelastomer（FKM） was analyzed.The effects of raw rubber，fillers and mixing process on the low temperature brittlement properties of binary and ternary FKM were investigated.The results showed that，Tgof FKM was similar to TR10，which both could reflect the low temperature motion of FKM molecular chain and glass transition temperature.The peroxide-cured FKM with high fluorine content had better low temperature resistance，and the bisphenol-cured binary FKM had worse low temperature resistance.The FKM filled with carbon black N774 had better low temperature resistance.Milling number for plastication had little effect on the low temperature brittleness of FKM. |
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