EXPERIMENTAL STUDY OF THE FORMATION OF CONSTRUCTIVE OF ELEMENTS FROM THERMOSTAT REINFORCED COMPOSITION WHEN PRESSING
UDC 678.027.7:678.046
Key words: SMC prepreg, polyester binder, fiberglass filler, compression pressing, stiffening ribs, wicking depth.
For citation: Kordikova E. I., Dyakova H. N. Experimental study of the formation of constructive of elements from thermostat reinforced composition when pressing. Proceedings of BSTU, issue 2, Chemical Engineering, Biotechnologies, Geoecology, 2022, no. 1 (253), pp. 33–36 (In Russian). DOI: https://doi.org/10.52065/2520-2669-2022-253-1-33-36.
Abstract
A method of experimental investigation of the formability of structural elements from a cured reinforced composition is proposed. SMC prepregs based on polyester binder manufactured by Ba-utex, Russia, were used as the object of the study. The value of the flow depth of the composition depends on the main parameters of the pressing process (direct) pressing: temperature, pressing force, as well as the influence of the content of fibrous filler in the SMC composition. It was found that with an increase in the content of fiberglass filler from 20 to 25% by weight. the leakage depth is reduced by 15%. An increase in pressure and gap width leads to an increase in the material flow path. The dependence between the gap width and the leakage depth on the process parameters has been established.
When the fibers are pressed under pressure into the slot, the filler is oriented along the direction of flow, as well as its destruction from destruction. A decrease in the value of the fiber length affects a decrease in the strength of the molded element.
The method can be used to assess the possibility of forming stiffeners, rebars and thin walls in production conditions. The results of the experiment are applicable in the design of structural elements, the assignment of radii of curves and technological slopes.
References
- 1. Karpovich O. I., Narkevich A. L., Kalinka A. N. Evaluation of formability of materials based on metalcontaining polymeric wastes. Trudy BGTU [Proceedings of BSTU], issue 2, Chemical Engineering, Biotechnologies, Geoecology, 2019, no. 2, pp. 70–73 (In Russian).
- Dyakova H. N., Kordikova E. I. Formability of structural elements from compositions based on polypropylene end leather waste. Novyye funktsional’nyye materialy, sovremennyye tekhnologii i metody issledovaniya: materialy VI Respublikanskoy nauchno-tekhnicheskoy konferentsii molodykh uchenykh [New functional materials, modern technologies and research method: Materials of VI Republican Scientific and Technical Conference of Young Scientists], Gomel, 2020, pp. 34–35 (In Russian).
