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| 芳纶增强阻燃耐磨型装饰原纸的制备及性能研究 |
| Study on the Preparation and Performance of Aramid Reinforced Flame-retardant and Wear-resistant Decorative Base Paper |
| 收稿日期：2021-02-03 |
| DOI：10.11980/j.issn.0254-508X.2021.06.002 |
| 关键词: 多巴胺改性 芳纶纤维 装饰原纸 力学性能 摩擦磨损性能 阻燃性能 |
| Key Words:dopamine modification aramid fiber decorative base paper mechanical properties friction and wear properties flame retardant properties |
| 基金项目:浙江省重点研发计划项目（2019C04008）；国家“十三五”重点研发计划项目（2017YFB0308300， 2017YFB0308302）；华南理工大学制浆造纸工程国家重点实验室开放基金资助项目（201333）。 |
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| 摘要:以针叶木纤维为基体，通过引入聚多巴胺（PDA）表面修饰后的芳纶纤维（AF）作为增强体，采用湿法成型制备了PDA/AF装饰原纸，重点研究了PDA/AF添加量对装饰原纸物理性能、摩擦磨损性能以及阻燃性能的影响，并探讨了其影响机制。研究结果表明，当PDA/AF添加量为25%时，PDA/AF装饰原纸的干抗张指数为34.2 N·m/g，湿抗张指数为7.56 N·m/g，相比针叶木浆装饰原纸分别提高了22%和80%；磨损率为2.43×10-4 mm3/J，最大热释放速率（PHRR）为125.21 W/g，相比针叶木浆装饰原纸分别降低了46.48%和20.55%，且烟密度明显降低。 |
| Abstract:In this study， surface-modified aramid fiber with dopamine （PDA/AF） decorative base paper were prepared by wet molding process using softwood fiber as matrix， PDA/AF as the reinforcements. The effects of the addition of PDA/AF on the physical properties， friction and wear properties， and flame retardancy of the decorative base papers were studied， and the influence mechanism was discussed. The results showed that when addition of PDA/AF was 25%， the dry tensile index and wet tensile index of PDA/AF decorative base paper were 34.2 and 7.56 N·m/g， respectively， which increased by 22% and 80%， respectively， compared with softwood fiber decorative base paper. The wear rate and maximum heat release rate （PHRR） were 2.43×10-4 mm3/J and 125.21 W/g， which were 46.48% and 20.55% lower than those of softwood fiber decorative base paper， respectively. The smoke density of PDA/AF decorative base paper was significantly reduced as well. |
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