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通过等离子体连续处理仪对疏水性材料表面进行表面改性而提高了其润湿性。研究了不同反应条件对高分子材料表面改性的影响;通过测定样品表面的接触角等性能评价了其表面亲水性的变化。经过等离子体表面处理,聚四氟乙烯的接触角有了显著下降;聚乙烯电池隔膜的吸碱率为自身重量的3.5倍,爬高率初始3 min接近100 mm;硅橡胶的接触角由105°下降到30°;聚酯的接触角由98°到15°。通过对材料表面进行丙烯酸接枝,评价了时效性的影响;初步探讨了真空紫外辐射对表面改性的影响。结果表明:改性后疏水性材料表面的润湿性得到了明显改善,该技术与设备在工业应用方面非常具有推广价值。
The surface of the hydrophobic material is surface-modified by a plasma continuous processing apparatus to improve its wettability. The effects of different reaction conditions on the surface modification of polymer materials were investigated. The changes of surface hydrophilicity were evaluated by measuring the contact angle of the sample surface. After plasma surface treatment, the contact angle of polytetrafluoroethylene has been significantly reduced; polyethylene battery separator absorbency rate of 3.5 times its own weight, the initial climb rate of 3 min close to 100 mm; silicone rubber contact angle from 105 ° down to 30 °; Polyester contact angle from 98 ° to 15 °. The effect of aging on the surface of the material was evaluated by grafting acrylic acid onto the surface of the material. The effect of vacuum ultraviolet radiation on the surface modification was also discussed. The results show that the wettability of the modified hydrophobic material surface has been significantly improved, and the technology and equipment are very valuable in industrial applications.