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Effect of micro‐/nano‐scale aramid fibrillated fibers on the tensile properties of styrene‐butadiene latex
Polymer Composites ( IF 4.8 ) Pub Date : 2020-09-15 , DOI: 10.1002/pc.25800 Aixin Zhong 1 , Junrong Luo 1 , Yi Wang 1 , Guilong Xu 1 , Jian Hu 1
Polymer Composites ( IF 4.8 ) Pub Date : 2020-09-15 , DOI: 10.1002/pc.25800 Aixin Zhong 1 , Junrong Luo 1 , Yi Wang 1 , Guilong Xu 1 , Jian Hu 1
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Micro−/nanofibers attract extensive attention of being used as reinforcing agents in polymer composites. Fibrillated fibers have a hierarchical network structure, and a larger specific surface area. Thus, they provide additional anchorage sites in the composite, enhancing the bonding strength between different constituents. In this work, aramid fibrillated micro−/nanofibers (AFMNs) were prepared by a refining process. Styrene‐butadiene latex (SBL) was used as the matrix, and it was mixed with AFMNs, formed AFMN/SBL composites. The mass fractions of AFMNs in the matrix are adjusted to 2%, 4%, 6%, and 8%. The microstructure of AFMNs and the fracture surfaces of AFMN/SBL composites were investigated by microscopical techniques. The results showed that the elastic modulus and tensile strength of AFMN/SBL composites are higher than that of the pure styrene‐butadiene latex film, except tensile strain. With the increase of fiber content, the elastic modulus and tensile strength of AFMN/SBL composites increased from 5.15 MPa to 19.66 MPa and 2.35 MPa to 4.23 MPa, respectively. However, the tensile strain decreased from 101% to 35%. The calculated elastic modulus of Halpin‐Tsai equation is close to the experimental values when the mass fractions of AFMNs is less than 6%.
中文翻译：
微/纳米芳族聚酰胺原纤化纤维对丁苯胶乳拉伸性能的影响
微纤维/纳米纤维在聚合物复合材料中用作增强剂引起了广泛的关注。原纤化纤维具有分层的网络结构和较大的比表面积。因此，它们在复合材料中提供了附加的锚固位点，从而增强了不同成分之间的粘结强度。在这项工作中，芳族聚酰胺原纤化微纤维/纳米纤维（AFMNs）通过精制过程制备。苯乙烯-丁二烯胶乳（SBL）被用作基质，并与AFMNs混合，形成AFMN / SBL复合材料。将矩阵中AFMN的质量分数调整为2％，4％，6％和8％。通过显微技术研究了AFMNs的显微组织和AFMN / SBL复合材料的断裂表面。结果表明，除拉伸应变外，AFMN / SBL复合材料的弹性模量和拉伸强度均高于纯苯乙烯-丁二烯乳胶膜。随着纤维含量的增加，AFMN / SBL复合材料的弹性模量和拉伸强度分别从5.15 MPa增加到19.66 MPa，从2.35 MPa增加到4.23 MPa。然而，拉伸应变从101％降低到35％。当AFMN的质量分数小于6％时，Halpin-Tsai方程的计算弹性模量接近于实验值。
更新日期：2020-09-15
中文翻译：
微/纳米芳族聚酰胺原纤化纤维对丁苯胶乳拉伸性能的影响
微纤维/纳米纤维在聚合物复合材料中用作增强剂引起了广泛的关注。原纤化纤维具有分层的网络结构和较大的比表面积。因此，它们在复合材料中提供了附加的锚固位点，从而增强了不同成分之间的粘结强度。在这项工作中，芳族聚酰胺原纤化微纤维/纳米纤维（AFMNs）通过精制过程制备。苯乙烯-丁二烯胶乳（SBL）被用作基质，并与AFMNs混合，形成AFMN / SBL复合材料。将矩阵中AFMN的质量分数调整为2％，4％，6％和8％。通过显微技术研究了AFMNs的显微组织和AFMN / SBL复合材料的断裂表面。结果表明，除拉伸应变外，AFMN / SBL复合材料的弹性模量和拉伸强度均高于纯苯乙烯-丁二烯乳胶膜。随着纤维含量的增加，AFMN / SBL复合材料的弹性模量和拉伸强度分别从5.15 MPa增加到19.66 MPa，从2.35 MPa增加到4.23 MPa。然而，拉伸应变从101％降低到35％。当AFMN的质量分数小于6％时，Halpin-Tsai方程的计算弹性模量接近于实验值。
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