Construction Composites Based on Secondary Thermoplastics and Manufacturing Waste

Abstract

Abstract The paper presents current trends in the development of environmentally friendly building composite materials. The choice of thermoplastic polymer binder and natural plant-based fillers is substantiated. Highly filled composites based on secondary polypropylene and natural plant fillers have been developed: wood flour; coniferous flour; buckwheat husks; oat husks. Their main physical and mechanical properties, such as impact strength and flexural strength, have been studied. Experimental research has revealed that, in addition to traditional fillers like wood flour and coniferous flour, it is more relevant to use by-products of agro-industrial complexes in the form of buckwheat husks and oat husks. These technological waste products of agro-industrial complexes are quite widespread in Ukraine and are widely available in almost all regions of the country. However, their disposal is usually challenging. For the first time, the influence of the fractional composition of plant fillers in polymeric composites based on secondary polypropylene on the main physical and mechanical properties has been studied. It has been clarified that the developed composites with polyfractional compositions of plant fillers exhibit higher indicators. The high performance of the composites is achieved due to the maximum packing density of natural fillers in the polymer matrix.