白炭黑改性剂对天然橡胶性能的影响
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摘要
研究硅烷偶联剂(偶联剂Si69和KH570)和表面活性剂[聚乙二醇(PEG)和十八醇]作为白炭黑改性剂对天然橡胶(NR)性能的影响。结果表明:与无改性剂胶料相比,添加改性剂胶料的硫化速度均加快和M_L均减小;两种偶联剂和PEG胶料的M_H-M_L均增大,300%定伸应力、撕裂强度和耐磨性能均提高;两种偶联剂胶料的拉伸强度均提高,两种表面活性剂胶料的拉伸强度均降低;两种偶联剂和十八醇胶料的结合胶质量分数均提高。改性剂有助于改善白炭黑的分散性能及其与橡胶基体的作用,偶联剂Si69对白炭黑胶料的改性作用最好。
引文
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[2]Askwar H,Kim J K,Pradip B S,et al.Synthesis of Mesoporous Silica with Superior Properties Suitable for Green Tire[J].Journal of Industrial and Engineering Chemistry,2015,18(5):1 841-1 844.
[3]Theppradit T,Prasassarakich P,Poompradub S.Surface Modification of Silica Particles and Its Effects on Cure and Mechanical Properties of the Natural Rubber Composites[J].Materials Chemistry and Physics,2014,148(3):940-948.
[4]Xu T W,Jia Z X,Luo Y F,et al.Interfacial Interaction between the Epoxidized Natural Rubber and Silica in Natural Rubber/Silica Composites[J].Applied Surface.Science,2015,328:306-313.
[5]Mohammed M K,Luis A M,Gustavo A S,et al.Local Mechanical and Dielectric Behavior of the Interacting Polymer Layer in Silica Nano-particles Filled SBR by Means of AFM-Based Methods[J].Polymer,2013,54(18):4980-4986.
[6]付文.接枝改性炭黑、白炭黑应用于天然橡胶的性能研究[D].广州:华南理工大学,2014.
[7]曹奇,崔蔚,贾红兵,等.白炭黑表面改性对NR/BR硫化胶性能的影响[J].橡胶工业,2001,48(7):389-392.
[8]8王兵兵.白炭黑表面接枝改性及其在橡胶中的应用[D].广州:华南理工大学,2012.
[9]李艳花.白炭黑原位改性NR的结构及其性能研究[D].株洲:湖南工业大学,2012.
[10]Byers J T.Silane Coupling Agents for Enhanced Silica Performance[J].Rubber world,1999,218[3):8-45.
[11]贾颖华.橡胶硫黄硫化交联密度表征方法研究及应用[D].北京:北京化工大学,2010.
[12]Payne A R.The Dynamic Properties of Carbon Black Loaded Natural Rubber Vulcanizates.Part I[J].Journal of Applied Polymer Science,1962,6:57-63.
[13]刘静.界面特性对硅橡胶力学行为的影响[D].绵阳:中国工程物理研究院,2008.