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摘要
采用对苯二胺改性氧化石墨烯,制备了改性氧化石墨烯/丁腈橡胶复合材料,并对其热氧性能进行了研究。结果表明:氧化石墨烯改性后,其表面的含氧官能团特征峰明显减弱,层间距增大,且与橡胶基体相容性提升。热氧老化后,复合材料断面光滑平整,拉伸强度保留率提升16.7%;复合材料失重曲线呈现2个阶段,改性氧化石墨烯能延缓第一阶段失重速率,显著降低第二阶段分解。复合材料热氧行为机理为:改性氧化石墨烯不仅能阻隔氧气与活性分子链接触,还能与含氧自由基发生反应,形成含双键的短链烯烃,进而提升复合材料的热氧稳定性。
Abstract
The modified graphene oxide (GO)-nitrile butadiene rubber (NBR) composites were prepared by p-pheylenediamine (P-phenylenediamine)-modified graphene oxide (GO),and analyzed its thermal and oxygen properties.The results showed that:after the GO modification,the characteristic peaks of oxygen-containing functional groups on the surface were obviously weakened,the layer spacing was increased,and the compatibility with rubber matrix was improved.After thermal oxygen aging,the cross section of the composite was smooth and smooth,and the tensile strength retention rate of the composite increased by 16.7%.The weight loss curve presented two stages.Modified oxylene can delay the weight loss rate of the first stage,and significantly reduced the decomposition of the second stage.The thermal oxygen behavior mechanism of the composite was as following:the modified oxidized ink can not only block the contact between oxygen and the active molecular chain,but also reacted with oxygen-containing free radicals to form more short-chain olefins containing double bonds,thus improving the thermal oxygen stability of the composite.
关键词
氧化石墨烯
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改性
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热氧老化
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丁腈橡胶
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复合材料
Key words
graphene oxide
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modification
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thermal oxygen aging
/
nitrile butadiene rubber
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composite material
氧化石墨烯改性及其对橡胶复合材料热氧性能的影响[J].
化工新型材料, 2022, 50(7): 87-90 DOI:10.19817/j.cnki.issn1006-3536.2022.07.018
[1] Meyer J C,Geim A K,Katsnelson M I,et al.The structure of suspended graphene sheets[J].Nature,2007,446(7131):60-63.
[2] Paci J T,Belytschko T,Schatz G C.Computational studies of the structure,behavior upon heating,and mechanical properties of graphite oxide[J].The Journal of Physical Chemistry (C),2007,111(49):18099-18111.
[3] 董月,周睿,辛振祥.石墨烯在橡胶中的应用以及研究进展[J].橡塑技术与装备,2017,43(23):24-28.
[4] 陈莹莹,宓一鸣,阮勤超,等.石墨烯的制备及应用的研究进展[J].硅酸盐通报,2015,34(3):757-763.
[5] 赵宗祥.改性氧化石墨烯/炭黑/天然橡胶复合材料性能研究[D].青岛:青岛科技大学,2020.
[6] 辛华,赵星,任庆海,等.改性石墨烯/天然橡胶复合材料的制备及性能[J].精细化工,2017,34(5):513-518.
[7] 张钊.(氧化)石墨烯改性丁腈橡胶的研究[D].成都:西南石油大学,2017.
[8] 崔隽雷,刘力,毛迎燕,等.氧化石墨烯/炭黑/乳聚丁苯橡胶纳米复合材料的性能研究[J].橡胶工业,2015,62(8):453-457.
[9] 汤银银,王娜,杨凤,等.机械共混法制备改性氧化石墨烯/天然橡胶复合材料及性能表征[J].高分子材料科学与工程,2015,31(9):167-172.
[10] 李俊.氧化石墨烯及其还原产物电学性质的扫描探针显微镜研究[D].湘潭:湘潭大学,2016.
[11] 许士才.石墨烯的制备、表征及光电性质应用研究[D].济南:山东师范大学,2014.
[12] 宋小娟.石墨烯填充丁腈橡胶纳米复合材料[J].橡胶参考资料,2016,46(6):7-16.
基金资助
中国石油科技管理部资助项目(2016B-2707)
