用化学或物理方法使纤维变性而制得的化学纤维。经过物理变性的纤维有异形纤维、变形纤维和复合纤维。用化学方法改性的纤维有接枝纤维、共聚纤维和经化学后处理变性的纤维等。
同时介绍了改性纤维的性能表征方法。
The characterization methods for performance of modified fiber were introduced.
例如，在碱性环境下，改性纤维球滤料的使用寿命会大大缩短；
For example, in the alkaline environment, change of fiber ball filter service life will be shortened;
研究结果表明，改性纤维球过滤单元可以在较高的过滤速度下稳定运行。
Experimental results indicated that modified fibrous ball filtration unit can be operated stably under higher filtering rates.
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