| 沈哲裕,唐敏,梁云,徐桂龙,宋强.表面改性玻纤滤纸在高温液压系统中的过滤稳定性研究[J].中国造纸,2026,45(6):68-76 |
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| 表面改性玻纤滤纸在高温液压系统中的过滤稳定性研究 |
| Study on the Filtration Stability of Surface-modified Glass Fiber Filter Paper in High-temperature Hydraulic Systems |
| 收稿日期：2026-02-09 修订日期：2026-03-19 |
| DOI：10.11980/j.issn.0254-508X.2026.06.008 |
| 关键词: 玻璃纤维 滤纸 硅烷偶联剂 表面改性 过滤稳定性 |
| Key Words:glass fibers filter paper silane coupling agent surface modification filter stability |
| 基金项目:中央高校基本科研业务费专项资金（x2zzD2250030）。 |
| 作者 | 单位 | 邮编 | | 沈哲裕* | 华南理工大学轻工科学与工程学院,广东广州,510640 | 510640 | | 唐敏* | 华南理工大学轻工科学与工程学院,广东广州,510640 | 510640 | | 梁云 | 华南理工大学轻工科学与工程学院,广东广州,510640 | 510640 | | 徐桂龙 | 华南理工大学轻工科学与工程学院,广东广州,510640 | 510640 | | 宋强 | 华南理工大学轻工科学与工程学院,广东广州,510640 | 510640 |
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| 摘要:本研究采用γ-氨丙基三乙氧基硅烷（KH550）与γ-缩水甘油氧丙基三甲氧基硅烷（KH560）对玻璃纤维进行表面改性，制备丙烯酸树脂增强玻纤滤纸，并对比分析不同滤纸在高温老化前后的基本性能、孔隙结构及过滤性能，探究硅烷偶联剂改性对滤纸过滤稳定性的影响。结果表明，高温老化后3种滤纸整体纤维网络结构保持完整，厚度与透气度变化较小。与空白样和KH550改性滤纸相比，KH560改性滤纸在高温老化后抗张强度最高（1.49 kN/m），平均孔径和最大孔径更小。在过滤性能方面，KH560改性滤纸高温老化后的平均过滤比保持率达89%以上，高于空白样（74%以上），且过滤比随压差变化的衰减程度最低；同时，KH560改性滤纸达到相同终止压差所需时间更长，表现出更久的使用寿命。 |
| Abstract:In this study, glass fibers were surface-modified with γ-aminopropyltriethoxysilane (KH550) and γ-glycidoxypropyltrimethoxysilane (KH560), and acrylic resin-reinforced glass fiber filter papers were prepared. The basic properties, pore structure, and filtration performance of different filter papers before and after high-temperature aging were comparatively analyzed to investigate the effect of silane coupling agent modification on the filtration stability of the filter papers. The results showed that after high-temperature aging, the overall fiber network structures of the three filter papers remained intact, with only slight changes in thickness and air permeability. Compared with the blank sample and the KH550-modified filter paper, the KH560-modified filter paper exhibited the highest tensile strength after high-temperature aging (1.49 kN/m), as well as smaller mean and maximum pore sizes. In terms of filtration performance, the average filtration ratio retention of the KH560-modified filter paper after high-temperature aging exceeded 89%, which was higher than that of the blank sample (over 74%). Moreover, it showed the lowest attenuation of filtration ratio with increasing pressure differential. Meanwhile, the KH560-modified filter paper took a longer time to reach the same terminal differential pressure， indicating a longer service life. |
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