DOI: https://doi.org/10.15587/1729-4061.2019.176698

Designing the organoplastics based on aromatic polyamide, study of their operational properties and applicability

Anna-Mariia Tomina, Yekaterina Yeriomina, Viktor Terenin

Abstract


Polymeric composite materials that are reinforced with organic fibers are characterized by great possibilities in terms of improving the durability of friction nodes in machines and mechanisms. These composites successfully compete with non-ferrous metals and their alloys and, in some cases, outperform polymeric and metallic analogs by their properties. In this regard, we have studied the influence of the organic fiber lola on operational characteristics of the aromatic polyamide phenylone, brand C-1, and on possibilities to apply the developed polymeric composite materials.

Experimental studies have confirmed that the reinforcement of phenylone with the organic fiber lola in the amount of 5–15 % by weight improves its operational characteristics. This is predetermined by the arrangement of the supramolecular structure of the basic polymer due to the introduction of organic fiber. Thus, at the interface " phenylone-filler" one clearly observes the transformation of the binder's globular structure into fibrillar one. That leads to a positive effect: there is an increase in destruction energy (by 1.5 times) and chemical resistance (by 1.1–1.36 at aging in 5 % HCl, and by 1.27–1.6 ‒ in 10 % HCl). It should be noted that the developed organoplastics are stable at a temperature of 673 K, while the starting polymer begins to destroy intensively at 400 K. Specifically, it was determined that at a further increase in the mass fraction of the filler these indicators deteriorate, due to insufficient adhesion between the filler and the binder.

Using the organic fiber lola (in the amount of 5–15 % by weight) makes it possible to obtain composites with improved operational characteristics: enhanced thermal and chemical parameters, high resistance to impact loads. Thus, there is reason to argue about the prospects of using the fiber lola as a filler for composites. Organoplastic with an optimum fiber content (15 % by weight) is recommended for manufacturing the components of tribological nodes for modern equipment instead of non-ferrous metals and their alloys due to sufficiently high operational properties.

Keywords


phenylone; polyamide; organic fiber; lola; organoplastics; heat resistance; chemical resistance; structuring; tribological nodes

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ISSN (print) 1729-3774, ISSN (on-line) 1729-4061