ZDMA改性Si_(3)N_(4)制备ZDMA@Si_(3)N_(4)/EPDM复合材料及性能研究  

Construction of ZDMA@Si_(3)N_(4)Hybrids by Modifying Si_(3)N_(4) with ZDMA:Preparation and Properties Research of ZDMA@Si_(3)N_(4)/EPDM Composites

作　　者：李方山[1,2] 吴兵 方胜阳[1] 杨静[1] 章于川[1] LI Fang-shan;WU Bing;FANG Sheng-yang;YANG Jing;ZHANG Yu-chuan(Anhui ADZD Rubber Technology Development Co.Ltd.,Hefei 230038,China;Key Laboratory of Environment-friendly Polymeric Materials of Anhui Province,Hefei 230601,China)

机构地区：[1]安徽安大中鼎橡胶技术开发有限公司,安徽合肥230038 [2]绿色高分子材料安徽省重点实验室,安徽合肥230601

出　　处：《安徽化工》2024年第3期81-83,共3页Anhui Chemical Industry

摘　　要：以羧酸锌盐二甲基丙烯酸锌(ZDMA)为改性剂,湿法改性处理陶瓷纳米氮化硅粉体(n-Si_(3)N_(4)),制备ZDMA@Si_(3)N_(4)/EPDM复合材料,研究ZDMA@Si_(3)N_(4)对复合材料力学性能、耐磨性能及耐油性能的影响。实验结果表明,ZDMA对Si_(3)N_(4)具有很好的表面有机化改性效果,改善了其在EPDM基体中的分散性,同时结构中不饱和键与橡胶大分子链形成共硫化,有效提高了复合材料的交联密度和极性,二者具有良好的协同作用。当ZDMA@Si_(3)N_(4)添加量为15 phr时,ZDMA@Si_(3)N_(4)/EPDM复合材料的拉伸强度和撕裂强度分别提高24.2%和42.8%,阿克隆磨耗磨损体积由0.52 cm^(3)/1.6 km降低至0.14 cm^(3)/1.6 km,100℃*70 h耐热油质量变化率由102%降至87%。ZDMA@Si_(3)N_(4)/EPDM Composites were prepared using ceramic nano-silicon nitride(n-Si_(3)N_(4))powder,modified with zinc dimethacrylate(ZDMA)by wet modification treatment.In this paper,the effects of ZDMA@Si_(3)N_(4)on the mechanical properties,wear resistance and oil resistance of the composites were investigated.The experimental results show that ZDMA has a good organic surface modification effect on Si_(3)N_(4)and improves its dispersion in the EPDM matrix.At the same time,the unsaturated bonds in the structure of the composite material form co-sulphuration with the rubber macromolecular chain,which effectively improves the cross-linking density and polarity,and ZDMA and Si_(3)N_(4)achieve good synergistic effects.When ZDMA@Si_(3)N_(4)is added at 15 phr,the tensile and tear strength of the ZDMA@Si_(3)N_(4)/EPDM composites are increased by 24.2%and 42.8%,respectively,the Akron abrasion loss is reduced from 0.52 cm^(3)/1.6 km to 0.14 cm^(3)/1.6 km,and the mass change rate after hot oil aging at 100℃for 70 h is reduced from 102%to 87%.

关 键 词：纳米氮化硅 改性 复合材料 

分 类 号：TB332[一般工业技术—材料科学与工程]