Drawing and ultimate tensile properties of modified polyamide 6 fibers

2011 ◽  
Vol 51 (4) ◽  
pp. 755-763 ◽  
Author(s):  
Wei Wei ◽  
Xin-Ling Wang ◽  
Zhi-Wei Liu ◽  
Dong-Rui Wu ◽  
Liang Qiu ◽  
...  
2017 ◽  
Vol 132 (5) ◽  
pp. 1501-1505
Author(s):  
E. Dryzek ◽  
M. Wróbel ◽  
E. Juszyńska-Gałązka

Materials ◽  
2018 ◽  
Vol 12 (1) ◽  
pp. 81 ◽  
Author(s):  
Francesco La Mantia ◽  
Manuela Ceraulo ◽  
Maria Mistretta ◽  
Luigi Botta ◽  
Marco Morreale

The use of polyamide/polyolefin blends has gained importance and concern for years, but they also show some issues to be adequately addressed, such as the incompatibility between the two components. This is usually overcome by using suitable compatibilizers, typically based on functionalized polyolefins. However, there is only little information about the use of a degraded polyolefins to induce compatibilization. This is even truer, as far as polyamide 6/polypropylene (PA6/PP) blends are concerned. In this work, compatibilization of PA6/PP blends by using small amounts of photo-oxidized PP was investigated; furthermore, the effects due to the presence of the photo-oxidized PP were studied also in relationship to the spinning operation, where the existence of the non-isothermal elongational flow can lead to significant, further morphological changes. It was found that isotropic samples showed significant enhancements of the tensile properties upon adding the photo-oxidized PP. Under non-isothermal elongational flow conditions, the presence of the photo-oxidized PP was particularly effective in improving the mechanical properties in comparison to the uncompatibilized blend fibers. Furthermore, an important result was found: The elongational-flow processing allowed obtaining anisotropic samples where the improvements of the properties, in comparison to the isotropic samples, were similar to those achieved by using a compatibilizer.


2017 ◽  
Vol 14 ◽  
pp. 25-37 ◽  
Author(s):  
Aref Fakhrali ◽  
Seyed Vahid Ebadi ◽  
Ali Akbar Gharehaghaji ◽  
Masoud Latifi ◽  
Abdolrasool Moghassem

In this study, we fabricated poly vinyl alcohol/polyamide 6 (PVA/PA6) hybrid nanofiber yarns and examined the influence of PA6 content on tensile properties of hybrid nanofiber yarns. The surface morphology of nanofiber yarns was studied by scanning electron microscope (SEM). The average diameters of nanofibers in pure PA6 and pure PVA nanofibers yarns were 83±12 nm and 187±21 nm, respectively. The results showed that the strength of hybrid yarns was descending for PA6 contents below 16.5 % and ascending for higher contents. Also, by increasing the PA6 ratio in the hybrid yarn, the elongation at break was decreased. Three various models including: Hamburger, simple rule of mixtures (ROM) and hybrid models were applied to predict the tensile behavior of hybrid yarns. This study showed that neither ROM nor Hamburger’s models were capable of predicting the tensile properties of hybrid yarns. Whiles, hybrid model can predict properties with the lowest error (6.44 % error in strength values and 13.06 % error in elongation values prediction). Moreover, this model was modified further for higher performance. Our results demonstrate that the hybrid model can be applied in engineered tensile properties of nanofibrous yarns.


2011 ◽  
Vol 18 (6) ◽  
pp. 1841-1850 ◽  
Author(s):  
Wei Wei ◽  
Liang Qiu ◽  
Xin-Ling Wang ◽  
Hong-Ping Chen ◽  
Yu-Ching Lai ◽  
...  

2011 ◽  
Vol 284-286 ◽  
pp. 2370-2373 ◽  
Author(s):  
Jian Li

The effects of PTFE on the tensile and tribological properties of glass fiber reinforced polyamide 6(PA6) composites were studied. Tribological tests were conducted on an M2000 friction and wear tester using a block-on-ring arrangement. It was observed that the PTFE played a main role in the tensile-resistant and wear-resistant properties of the PA6 composites. The tensile properties were ruled by the fiber–matrix adhesion. And the excellent tribological performance of the PTFE fillers improved the tribological properties of PA6 composites.


2020 ◽  
Vol 4 (2) ◽  
pp. 64
Author(s):  
Madina Shamsuyeva ◽  
Boon Peng Chang ◽  
Natalie Vellguth ◽  
Manjusri Misra ◽  
Amar Mohanty ◽  
...  

The aim of this feasibility study is to develop application-oriented natural fiber-reinforced biocomposites with improved mechanical and durability performance. The biocomposites were manufactured via a film-stacking process of epoxy-coated flax textiles and polyamide 6 (PA6). The fabricated biocomposites were subjected to thermo-oxidative ageing for 250, 500 and 1000 h and tested with regard to tensile properties. The results show that the biocomposites with epoxy-coated flax fibers possess considerably higher tensile properties compared with the reference specimens under all tested conditions.


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