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This review provides information on the most common fibers extracted from plant lignocellulosic raw materials. Plant fibers are used as a fibrous reinforcing filler of polymer composite materials (PCMs) on various polymer matrices. The main problems in using such materials are shown—ensuring a reliable connection between the reinforcing filler and the polymer matrix, the need for protection from moisture, and instability of the mechanical properties of a fibrous reinforcing filler. The most common areas of application of PCMs reinforced with plant fibers are in the automotive industry and production of building materials. It is promising to create functional materials based on such PCM groups. [ABSTRACT FROM AUTHOR]

Using the Pareto method, the EDI binder formulation has been optimized in terms of binder rheological, strength, and heat-resistance properties. Compositions with a content of Iso-MTHFA hardener ranging from 85 to 90 wt pts and a content of UP 606/2 polymerization accelerator ranging from 0.9 to 1.1 wt pts per 100 wt pts of ED-20 resin are proposed for the manufacture of composites based on basalt and glass fibers by means of wet winding and pultrusion having the best set of these properties. [ABSTRACT FROM AUTHOR]

The state of the problem of studying and predicting the long-term strength and durability of polymer composite materials is examined. An original method for load testing for up to three months is proposed, which ensures the destruction of most of the specimens. The method has passed trials and is used in practice for long-term tests of specimens of fiberglass construction reinforcement at temperatures of –30, +23, and +50°C, as well as aircraft plates made of carbon fiberglass. The results of full-scale field tests for up to 17 years are given. Empirical expressions for predicting the long-term strength and durability of building and aviation materials based on glass and carbon plastics are proposed. [ABSTRACT FROM AUTHOR]