Prediction of Strength Properties of Elastic Polymeric Composite Materials Based on Polypropylene Woven Tapes
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Fibre Chemistry, Vol. 52, No. 3, September, 2020 (Russian Original No. 3, May-June, 2020)
PREDICTION OF STRENGTH PROPERTIES OF ELASTIC POLYMERIC COMPOSITE MATERIALS BASED ON POLYPROPYLENE WOVEN TAPES I. A. Prokhorova* and M. Bkkar**
UDC 620.22:677.024:677.017
Polymer composite materials are widely used in various fields of human activity. Their properties are largely determined by the properties of their components, in particular, reinforcing textile materials. In this study, the task is to obtain and investigate the properties of a composite based on reinforcing textiles – polypropylene fabric. The task was solved by theoretical modeling of the mechanical properties of a polymer composite material with subsequent verification of the prediction results by experimental studies. Experimental verification of the mechanical properties of the composite obtained by the technology developed by the authors showed a sufficiently high degree of coincidence of the results for various mechanical properties of the composite.
The rapid development of modern engineering and technologies requires more and more new constructive materials with predetermined properties. One of the promising ways to create such materials is the trend associated with the use of woven reinforcing materials [1-7]. The properties of such composites depend on the properties of the initial components: reinforcing and binding materials and the interface between them [3-5, 8, 9]. In terms of strength properties, composites with reinforcing textiles can be classified as rigid and elastic composites. A rigid composite consists of a rigid reinforcing component (e.g. carbon and glass fabrics) and a binder (e.g. epoxide). Such composites are characterized by high strength and low extension. The elastic composite consists of an elastic reinforcing component (polypropylene, polyethylene, polyester fabrics) and a binder (polypropylene and polyethylene resins, polyurethane and silicone rubbers). Such composites are characterized by high extension and low strength [1-9]. Elastic composites are used in those technical fields where elastic materials with minimal residual extension are needed, especially where it is necessary to withstand large pressure changes, for example, in deep ocean waters and at high altitudes above the Earth’s surface [1 -3, 5, 10, 11]. Due to the absence of sufficient scientific information related to the issues of modeling and predicting the properties of elastic composites based on reinforcing textiles, the research topic is relevant. When designing polymer composite materials (PCM) [3, 4, 8, 9, 12, 13], the “rule of mixtures” is used, which allows determining the main mechanical characteristics of the designed composite. According to this rule, the PCM properties can be represented by the linear additive law YPCM = XPCYPC + XRCYRC,
(1)
where Y is any characteristic (strength, density, etc.); XPC, XRC are the volume fractions of the binder polymer component (PC) and the reinforcing component (RC) in PCM; XPC = SPC / SPCM or XPC = VPC / VP
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