中文摘要：

以干混和挤出法制备竹炭粉/丁苯橡胶/超高分子量聚乙烯复合材料,研究丁苯橡胶和超高分子量聚乙烯的含量比例对复合材料形貌、拉伸和动态力学性能的影响。观察发现添加丁苯橡胶后复合材料表面光滑,且具有一定的韧性。通过扫描电镜分析发现竹炭粉与丁苯橡胶在没有添加任何助剂的情况下与基体树脂混合良好,形成良好的分散状态。在丁苯橡胶和超高分子量聚乙烯含量分别为10%和30%的时候,复合材料的断裂伸长率从26.29%增加到39.57%,比不添加橡胶最终提高了50.51%。动态力学分析发现,复合材料的存储模量随着超高分子量聚乙烯含量的增加和丁苯橡胶含量的减少而增大,最大可达到17.17 GPa。而在60%竹炭粉/10%丁苯橡胶/30%超高分子量聚乙烯的质量配比下可以得到相对高强高韧的材料,此时复合材料的拉伸强度为91.45 MPa,断裂伸长率为39.57%。这种柔性复合材料为超高分子量聚乙烯拓宽了应用领域。

英文摘要：

A combined dry-blending and extrusion method was used to investigate the effects of the different styrene-bu- tadiene rubber （SBR） and ultrahigh molecular weight polyethylene （UHMWPE） contents on the morphological, tensile and dynamic mechanical properties of bamboo charcoal powder （BCP）/SBR/UHMWPE composites. It was found that, after the addition of SBR, the composites were more flexible and the surfaces were smoother. The field emission scanning electron microscope （FE-SEM） observation showed that the BCP and SBR exhibited strong interracial interaction with UHMWPE matrix without any coupling agent, and a well dispersive state was achieved. The tensile experimental results showed that the elongation at break of the composite increased from 26.29% to 39. 57% （ counting for an increase of 50. 51%） with the addition of 10 wt% SBR and 30 wt% UHMWPE compared to the composite without SBR. It was illus- trated that, by the dynamic mechanical analysis （DMA） the storage modulus of composites increased with the increase of UHMWPE content and the decrease of SBR content. When the temperature was above Ts of SBR, the highest storage modulus up to 17.17 GPa was obtained for the BCP/SBR/UHMWPE composite without the addition of SBR at -40℃. The 60BCP/IOSBR/30UHMWPE composite exhibited a moderate tensile strength value of 91.45 MPa and the highest e- longation at break of 39. 57%. A novel flexible BCP/SBR/UHMWPE composite with homogeneous dispersion state has been prepared, and thus it could be expanded the applications of UHMWPE.