Mechanical and micromechanical tensile strength of eucalyptus bleached fibers reinforced polyoxymethylene composites
Mechanical and micromechanical tensile strength of eucalyptus bleached fibers reinforced polyoxymethylene composites
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DOI：
10.1016/j.compositesb.2016.10.073
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发表时间：
2017-05-01
影响因子：
13.1
通讯作者：
Mutje, Pere
中科院分区：
文献类型：
--
作者：
Espinach, Francesc X.;Granda, Luis A.;Mutje, Pere
复合材料研究构成此类材料的相的特性组合。就天然纤维复合材料而言，作为矿物纤维增强复合材料的替代品，其基体仅限于加工温度低于200℃的材料。实际上，最常用的增强聚烯烃是聚丙烯和聚乙烯，但文献表明，此类复合材料的拉伸性能几乎已达到其极限值。然后，使用具有更高拉伸强度的基体开辟了开发更强复合材料的领域。聚甲醛已成功地与矿物增强材料或人造纤维素一起使用，但与天然纤维基增强材料一起使用时效果不佳。在这项工作中，制备并测试了天然纤维聚甲醛复合材料，其拉伸强度高于天然纤维增强聚丙烯，并且与未偶联的玻璃纤维聚丙烯复合材料相当。复合材料的界面作为复合材料性能的主要因素也进行了研究。该研究还致力于此类复合材料拉伸强度的微观力学方面。 (C) 2016 Elsevier Ltd. 保留所有权利。
Composite materials search a combination of the properties of the phases that compose such materials. In the case of natural fiber composites, as an alternative to mineral fiber reinforced composites, the matrices are limited to those with processing temperatures under 200 degrees C. Actually, the most commonly reinforced polyolefin are polypropylene and polyethylene, but the literature shows that the tensile properties of such composites had almost reached their ultimate values. Then, the use of matrices with higher tensile strengths opens the field to develop stronger composite materials. Polyoxymethylene has been used with success with mineral reinforcements or man-made cellulose, but has showed poor results with natural fiber based reinforcements. In this work, natural fiber polyoxymethylene composites have been prepared and tested, showing tensile strengths higher to that of natural fiber reinforced polypropylene, and comparable to uncoupled fiberglass polypropylene composites. The interphase of the composites, as a main factor to the performance of the composites was also studied. The research also works on the micromechanics aspects of the tensile strength of such composites. (C) 2016 Elsevier Ltd. All rights reserved.