Burya Аleksandr, Dniprovskiy State Technical University (2 Dniprobudivska Str., 51918 Kamianske, Ukraine)

Mingzhang Lee, Harbin TongDa Industrial Environment Protection Automation Co., Ltd (China).

Lipko Elena, SHED “Ukrainian State University of Chemical Technology” (8 Gagarina Av., 49005 Dnepropetrovsk, Ukrainе)

Tomina Anna-Mariia, Dniprovskiy State Technical University (2 Dniprobudivska Str., 51918 Kamianske, Ukraine)

Kuznetsova Olga, Dniprovskii State Agrarian and Economic University (25 Sergey Efremov Str., 49600 Dnipro, Ukraine)

Language: russian


Research topicality. Today modern technology is unthinkable without the extensive use of fibrous polymer composite materials (FPCM) that have firmly taken their place in such areas of technology as auto-, ship - and instrument construction. FPCM combined with ease of processing, allow to reduce product weight, reduce the work capacity of their manufacture and material consumption, as well as to improve competitiveness.

Problem setting. Exploitation characteristics of the initial polymers do not always meet the requirements to engineering plastics. Therefore, they are often replaced with organic fibrites (isotropic materials) composed of thermoreactive binders randomly reinforced with discrete fibers, in particular, with phenol-formaldehyde resin (PhFR), which has become widespread due to long-established production, low cost, the combination of valuable properties such as heat resistance and relatively high adhesion to reinforcing components.

Analysis of recent research and publications. During processing PhFR allow to obtain products avoiding the stage of polymerization or polycondensation in case of interaction with other substances. Unlike a number of different types of reinforced and filled products whose characteristics are formed directly in the manufacturing process, semifinished products made of organic fibrites based on PhFR are prepared in advance and can be stored up to 3-4 months without deterioration of technological and exploitational properties.

The definition of unsolved parts of a general problem. This paper presents the investigation results concerning physico-mechanical and thermophysical properties of organic plastics filled with organic fibers Rusar and Tanlon, different from the typical organic fibers by their high strength indices and thermal stability correspondingly.

Task setting. Investigation of the effect of heat-resistant organic fibers on the properties organic fibrites based on phenol formaldehyde resin.

The main material delivery. In order to determine the physico-mechanical and thermophysical indices, compositions containing organic fibers 7 mm long in the amount of 60 (Rusar) and 60-70 (Tanlon) wt.% have been produced and investigated.

Conclusions. The results of the held tests testify to the fact that organic plastics reinforced with 60 wt. % of Rusar fiber are advantageous over the material containing polysulfonamide fiber by 1.76-2.5 times in terms of mechanical properties, but are inferior to composites containing 70 wt. % of PSA by 1.4-2.3 times in terms of heat resistance.

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