补强型氢化丁腈橡胶力学与粘接性能研究

Study on dynamics and adhesive performances of enhanced HNBR

研究了纳米炭黑对氢化丁腈橡胶力学和粘接性能的影响,首先研究了补强型氢化丁腈橡胶邵氏A硬度与纳米炭黑添加量之间的关系。结果表明:随着纳米炭黑添加量的增加,补强型氢化丁腈橡胶的邵氏硬度有小幅增加;其次还研究了补强型氢化丁腈橡胶压缩永久变形与纳米炭黑添加量之间的关系,当纳米炭黑添加量为50份时,压缩永久变形降低到27.6%,该性能参数对要求压缩永久变形较大的密封有利;随着纳米炭黑添加量的增大,补强型氢化丁腈橡胶扯断强度亦逐渐增大,当添加份数为50份时,扯断强度达到24.2 MPa,补强效果良好。最后研究了添加50份纳米炭黑的粘接性能,经测试,粘接强度为10.2 MPa,且为胶层间破坏,粘接良好。目前,该补强型氢化丁腈橡胶密封件已用于北方某油田密封装置之中。

The influence of Nano-carbon black reinforcing agent on dynamics and adhesive performances of enhanced hydrogenated nitrile butadiene rubber(HNBR) is studied in this paper.First of all,the relation between SHORE A of enhanced HNBR and amount of nano-carbon black additive is studied.The result shows that SHORE A of the enhanced HNBR increases slightly with the increase of nano-carbon black additive.The next,the relation between compression set of the enhanced HNBR and amount of nano-carbon black additive is investigated.The result indicates that the compression set decreases by 27.6%when amount of nano-carbon black additive is 50 portions.The result is good for seal.The tensile strength of the enhanced HNBR increases gradually with the increase of nano-carbon black additive.When the portion of nano-carbon black additive is 50 versus100 portions of HNBR,tensile strength increases to 24.4 MPa,and the enhancing effect is good.In the end,the adhesive performance of HNBR with 50 portions of nano-carbon black additive is also studied.The results show that its adhesive strength is 10.2 MPa,and interface adhesive effect is fine.The reinforced HNBR seals have been applied to some sealing devices in oil fields in north of China.