| 改性芳纶短纤维和聚丙烯酸钠对丁腈橡胶吸水膨胀橡胶性能的影响 |
| Effect of Modified Aramid Short Fiber and Sodium Polyacrylate on Properties of NBR Water Swelling Rubber |
| 投稿时间：2018-05-29 修订日期：2018-05-29 |
| DOI：10.12136/j.issn.1000-890X.2019.02.0111 |
| 中文关键词: 吸水膨胀橡胶 丁腈橡胶 芳纶短纤维 磷酸改性 聚丙烯酸钠 吸水膨胀率 |
| 英文关键词: water swelling rubber NBR aramid short fiber phosphoric acid modification sodium polyacrylate water swelling rate |
| 基金项目:武汉工程大学第9届研究生教育创新基金资助项目（CX2017014）；国家重点研发计划公共安全风险防控与技术装备重点专项项目（17G041） |
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| 中文摘要: |
| 用磷酸刻蚀改性芳纶短纤维，以改性芳纶短纤维作为增强填料制备丁腈橡胶（NBR）吸水膨胀橡胶（炭黑和白炭黑用量均为20份），研究聚丙烯酸钠（吸水树脂）和改性芳纶短纤维用量对NBR吸水膨胀橡胶物理性能和吸水性能的影响。结果表明：聚丙烯酸钠用量对NBR吸水膨胀橡胶的拉伸强度、拉断伸长率、吸水膨胀率和质量损失率影响较大，聚丙烯酸钠的适宜用量为60份；改性芳纶短纤维用量增大，NBR吸水膨胀橡胶的硬度增大，拉伸强度提高，吸水膨胀率和质量损失率减小，改性芳纶短纤维的适宜用量为4份。 |
| 英文摘要: |
| Aramid short fiber was modified by phosphoric acid etching，nitrile-butadiene rubber（NBR） water swelling rubber was prepared by adding modified aramid short fiber as reinforcing filler into the NBR compound with 20 phr carbon black and 20 phr silica. The effects of the addition levels of sodium polyacrylate (water absorbent resin) and modified aramid short fiber on the physical properties and water absorption of NBR water swelling rubber were studied. The results showed that，the addition level of sodium polyacrylate had great influence on the tensile strength，elongation at break，water swelling rate and mass loss rate of NBR water swelling rubber. The suitable addition level of sodium polyacrylate was 60 phr. The hardness and tensile strength of NBR water swelling rubber increased as the addition level of modified aramid short fiber increasing，and meanwhile the water swelling rate and mass loss rate of NBR water swelling rubber decreased. The suitable addition level of modified aramid short fiber was 4 phr. |
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