The Effect of Modifiers on the Strength and Impact Toughness of Carbon Fiber Reinforced Plastics

Mustafa L. Ismailov M. Tashmukhanbetova I. Ablakatov I. Zhumakanova V.
31 January 2025 Pandawa Institute

Journal of Multidisciplinary Applied Natural Science
2025 #5 Issue 1 130 - 140 pp.

This study utilized epoxy resin, three types of fabric (carbon fiber, glass fiber, and Kevlar), and two plasticizers – tricresyl phosphate (TCP) and oleic acid (OA) – to enhance the impact toughness of carbon fiber-reinforced plastics (CFRP). The polymer matrix used in the experiments was a hot-cured epoxy compound Etal Inject-T consisting of two components: A – epoxy resin and B – hardener, in a mass ratio of 100:49.9. For the fabrication of CFRP plates, both manual and vacuum molding techniques were employed. Combined reinforcement of carbon fiber was achieved using one of two types of fabrics: Ortex 360 glass fiber or Kevlar. Accordingly, two compositions were prepared for the experiments: carbon fiber/glass fiber and carbon fiber/Kevlar. Layer stacking in each composition was performed at ratios of 10:10 and 14:6, consisting of 20 layers in total. The greatest strengthening effect for CFRP in the case of carbon fiber/glass fiber was observed with a layer ratio of 14:6 and matrix modification using 10% TCP plasticizer. The strength of the CFRP increased from 425 to 451 MPa, and the impact toughness (α) improved from 192 to 280 kJ/m². A key feature of this technology is the achievement of high-performance dual-purpose CFRP. This enables the reduction of CFRP structures in aerospace applications by 3 to 5 times, while simultaneously enhancing resistance to impact loads.

Carbon fiber reinforced plastics , epoxy resin , heat treatment , impact toughness , modifiers , plasticizers , strength , thermoplastics

Text of the article Перейти на текст статьи

JSC National Center of Space Research and Technology, Almaty, 050010, Kazakhstan
LLP International Educational Corporation, Almaty, 050043, Kazakhstan

JSC National Center of Space Research and Technology
LLP International Educational Corporation

10 лет помогаем публиковать статьи Международный издатель

Книга Публикация научной статьи Волощук 2026 Book Publication of a scientific article 2026