| 补强和硫化体系对封隔器用氢化丁腈橡胶胶料性能的影响 |
| Effect of Reinforcing and Curing System on Properties of Hydrogenated Nitrile Rubber Compound for Packer |
| 投稿时间：2016-08-20 修订日期：2016-08-20 |
| DOI： |
| 中文关键词: 氢化丁腈橡胶 封隔器 补强体系 硫化体系 炭黑 短切纤维 取向 |
| 英文关键词: HNBR packer reinforcing system curing system carbon black short cut aramid fiber orientation |
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| 中文摘要: |
| 研究补强和硫化体系对封隔器用氢化丁腈橡胶（HNBR）胶料性能的影响。结果表明：与短切纤维和硫化剂相比，炭黑对HNBR胶料的门尼粘度影响较大；随着炭黑、短切纤维和硫化剂用量增大，胶料的交联密度和硬度提高，其中炭黑和短切纤维对胶料的硬度影响较大；随着炭黑和硫化剂用量增大，胶料的t10和t90缩短；随着短切纤维用量增大，胶料的t10和t90延长；填充短切纤维的胶料拉伸强度和拉断伸长率降低，但在小应变下的拉伸应力大幅提高，且表现出与热塑性弹性体相似的屈服和冷流现象；短切纤维的取向会明显影响胶料性能，在施加拉伸应力时，短纤维取向方向与拉伸应力方向平行的胶料短切纤维承载应力，拉伸应力较高；短纤维取向方向与拉伸应力方向垂直的胶料橡胶基体承载应力，而纤维不承载应力，拉伸应力较低；填充与拉伸应力方向平行取向的芳纶短切纤维能提高封隔器在小应变下的拉伸应力。 |
| 英文摘要: |
| The effect of reinforcing and curing system on the properties of hydrogenated nitrile rubber（HNBR） compound for packer was studied.The results showed that，compared with short cut aramid fiber and curing agent，carbon black had much more influence on Mooney viscosity of the compound.As the addition level of carbon black，fiber and curing agent increased，the crosslinking density and hardness were increased，and carbon black and fiber had much more influence on the hardness.As the addition level of carbon black and curing agent increasd，the t10 and t90 of the compound were shorten.As the addition level of fiber increasd，t10 and t90 were delayed.With the introduction of fiber，the tensile strength and the elongation at break were decreased，and the tensile stress at small strain was greatly improved，and the yield and cold flow phenomenon was appeared as similar as those of thermoplastic elastomer.The properties of the compound were obviously affected by the orientation of fiber.As the orientation of fiber and the direction of the tensile stress were paralleled，the fiber bore the stress and the tensile stress was higher when the tensile stress was applied on the compound.On the contrary，as the orientation of fiber and the direction of the tensile stress were plumbed，rubber matrix bore the stress and the tensile stress decreased.The tensile stress of the packer at small strain could be improved by filling the fiber parallel to the direction of the tensile stress. |
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