• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Applied Polymer Science >The crosslinking of poly (ether ether ketone): Thermally and by irradiation
【24h】

The crosslinking of poly (ether ether ketone): Thermally and by irradiation

机译：聚（醚醚酮）的交联：热和辐射

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Crosslinking of amorphous poly (ether ether ketone) films was carried out by means of thermal annealing at 400 degrees C as well as by irradiation with 11.0 MeV proton beam at different dose rate ranging from 1.75 to 15.5 kW g(-1). The materials properties of the resulting films were investigated by mean of light microscopy, sol-gel analysis, two-dimensional infra-red correlation spectroscopy, 2DCOS-IR, and differential scanning calorimetry (DSC). It was found that both chain scission and crosslinking yields were decreased by an increase of dose rate and the ratio of crosslinks to chain scission was increased from 0.9 to 1.4. The 2DCOS-IR analysis in the region 1400-1800 cm(-1) showed progressive development of new bands at 1470 and 1740 cm(-1), which have been used to support the presence of crosslinking and chain scission reactions. The glass transition temperature also increased in line with increasing crosslinking density, but the results showed a limiting plateau value for the glass transition Tg, which depended only on the absorbed dose. This suggests that crosslinking was limited and did not increase after a specific value of the dose rate. Crosslinking by irradiation has many advantages over thermal annealing; in particular it is a one step rapid process producing a variety of homogeneously crosslinked, good quality films available for chemical modification. (c) 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 41999.
机译：非晶态聚（醚醚酮）薄膜的交联是通过在400摄氏度下进行热退火以及以11.0 MeV质子束以1.75至15.5 kW g（-1）的不同剂量照射进行的。通过光学显微镜，溶胶-凝胶分析，二维红外相关光谱，2DCOS-IR和差示扫描量热法（DSC）研究所得膜的材料性能。发现随着剂量率的增加，断链和交联的产率均降低，并且交联与断链的比率从0.9增加至1.4。在1400-1800 cm（-1）区域中的2DCOS-IR分析表明，在1470和1740 cm（-1）处的新谱带逐渐发展，这些谱带已用于支持交联和断链反应的存在。玻璃化转变温度也随着交联密度的增加而增加，但是结果显示出玻璃化转变温度Tg的极限平稳值，其仅取决于吸收剂量。这表明交联作用是有限的，并且在剂量率的特定值之后不会增加。辐照交联比热退火具有许多优势。特别地，这是一步一步的快速过程，可生产出各种均质交联的，高质量的可用于化学改性的薄膜。 （c）2015 Wiley Periodicals，Inc. J. Appl。 Polym。科学2015，132，41999。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号