丁苯橡胶接枝马来酸酐对白炭黑/丁苯橡胶复合材料性能的影响
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摘要
研究丁苯橡胶接枝马来酸酐(SBR-g-MAH)用量对白炭黑/丁苯橡胶(SBR)复合材料性能的影响。结果表明:随着SBR-g-MAH用量的增大,胶料的t10缩短,t90延长,ML和MH先增大后减小;复合材料的邵尔A型硬度、300%定伸应力和拉断伸长率呈增大趋势,拉伸强度和撕裂强度先增大后减小;白炭黑在SBR胶料中的分散性及界面结合明显改善;当SBR/SBR-g-MAH并用比为50/50时,复合材料的综合性能最佳。
The effect of the addition level of SBR-g-MAH on the properties of silica/SBR composite was investigated.The results showed that,as the addition level of SBR-g-MAH increased,t10 of the compound was reduced,t90 was extended,MLand MHincreased at first and then decreased.The Shore A hardness,the modulus at 300%elongation and the elongation at break of composite tended to increase,and the tensile strength and tear strength increased at first and then decreased.The dispersion of silica in SBR and their interfacial bonding were improved significantly.When the blend ratio of SBR/SBR-g-MAH was 50/50,the comprehensive properties of composite were the best.
The effect of the addition level of SBR-g-MAH on the properties of silica/SBR composite was investigated.The results showed that,as the addition level of SBR-g-MAH increased,t10 of the compound was reduced,t90 was extended,MLand MHincreased at first and then decreased.The Shore A hardness,the modulus at 300%elongation and the elongation at break of composite tended to increase,and the tensile strength and tear strength increased at first and then decreased.The dispersion of silica in SBR and their interfacial bonding were improved significantly.When the blend ratio of SBR/SBR-g-MAH was 50/50,the comprehensive properties of composite were the best.
引文
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[4]徐春燕,吴友平,赵素合,等.白炭黑增强偶联型溶聚丁苯橡胶的性能[J].合成橡胶工业,2009,32(3):201-205.
[5]Jarnthong Methakarn,Peng Zheng,Nakason Charoen,et al.Surface Modification of Silica Nanoparticles for Reinforcement of Epoxidized Natural Rubber[J].Advanced Materials Research,2010,93-94:370-376.
[6]Liu J W,Wu C F,Zhang P,et al.Effects of Cyclohexylamine Modified Silica on the Mechanical Properties of Filled Natural Rubber[J].Journal of Macromolecular Science.Part B:Physics,2008,47(4):689-700.