PDF (1144K)
摘要
通过直接共混法制备了白炭黑/氢化丁腈橡胶/丁腈橡胶(WCB/HNBR/NBR)耐热密封复合材料,研究了不同HNBR/NBR共混比、不同硫化体系对复合材料力学性能、压缩永久变形、耐油性能、耐热性能的影响。结果表明,当WCB/HNBR/NBR为30/25/75,在过氧化物/硫磺的共硫化体系下,复合材料综合性能最好,硬度、拉伸强度、压缩永久变形、150℃热空气老化后拉伸强度、浸油后体积变化率分别为58(邵A)、20.97MPa、12%、6.92MPa、11%;随着HNBR用量的增加,复合材料的耐热性能提高,而耐油性和压缩永久变形变化不大;在过氧化物/硫磺的共硫化体系下,复合材料的耐热性、耐油性、压缩永久变形、力学性能都较优异。
Abstract
The heat-resisting sealing composites of white carbon black(WCB)/hydrogenated nitrile rubber(HNBR)/nitrile rubber(NBR) was prepared by mechanical blending method,and effects of different HNBR/NBR blend ratio,different curing systems on the mechanical properties,compression set,oil resistance,heat resistance (150℃)of the composites were studied.The results showed that,when the WCB/HNBR/NBR blend rate was 30/25/75,curing system was peroxide/sulfur,the properties of composites were the best.Its hardness,tensile strength,compression set,tensile strength after hot air aging test,and volume change rate after immersion oil were 58(share A),20.97MPa,12%,6.92MPa,11% respectively.As the increase of the amount of HNBR,the heat resistance was improved,and the oil resistance and compression set had a little chang.The heat resistance,oil resistance,compression permanent set and mechanical properties of the composites by cocuring system of peroxide/sulfur were excellent.
关键词
白炭黑
/
氢化丁腈橡胶
/
丁腈橡胶
/
耐热密封复合材料
Key words
white carbon black
/
hydrogenated nitrile rubber
/
nitrile rubber
/
heat-resistant sealing composite material
WCB/HNBR/NBR耐热密封复合材料的制备与性能研究[J].
化工新型材料, 2019, 47(9): 66-69 DOI:
[1] 陈永周.耐热密封圈胶料配方的研制[J].橡胶科技市场,2003,15(5):17-18.
[2] 黄安民,王丹丹,王小萍,等.补强剂填充丁腈橡胶胶料的结构和性能[J].橡胶工业,2008,55(2):69-74.
[3] 张劲,高志华.炭黑/高分散白炭黑对丁腈橡胶耐热及耐油性能的影响[J].硅酸盐通报,2014,33(12):3160-3176.
[4] 张兆红,徐云慧,毛燕青,等.浅色耐油密封圈的研制[J].特种橡胶制品,2009(6):47-49.
[5] Anusuya Choudhury,Bhowmick AnilK,Christopherong.Effect of different nanoparticles on thermal,mechanical and dynamic mechanical properties of hydrogennted nitrile butadiene rubber nanocomposites[J].Journal of Applied Polymer Science,2010,116(3):1428-1441.
[6] 王作龄.丁腈橡胶和氢化丁腈橡胶(一)[J].世界橡胶工业,2005,32(9):7-11.
[7] 广东三和化工科技有限公司:一种耐高温液体密封胶:中国,2009101793349[P],2011-08-10.
[8] 韩忠民.氢化丁腈橡胶膜片的研制[J],特种橡胶制品,2014,35(2):54-57.
[9] 陈亮,陈炳强,陈炳耀,等.氢化丁腈橡胶在密封胶中的应用[J].橡胶工业,2014,61(1):31-35.
[10] 白华栋,文方岱,周淑芹,等.高性能氢化丁腈橡胶的配方与性能[J],合成橡胶工业,2004,27(6):360-362.
基金资助
江苏高校品牌专业建设工程资助项目(PPZY2015B181);江苏徐州市级课题(KC18153)
