Abstract
The aim of the article was to determine the effect of the poly(vinyl chloride) additive (PVC) on the thermomechanical and fire properties of epoxy composites reinforced with basalt fabric. Ten-layered composites with 2.5, 5 and 10 wt.% of PVC powder were fabricated using hand lay-up. The following features were evaluated for composites: structure (by scanning electron microscopy, SEM), thermomechanical properties (by dynamical thermomechanical analysis, DMTA), mechanical properties (in bending, tensile and interlaminar shear strength tests), hardness (using the Barcol method), thermal stability (by thermogravimetry, TGA) and fire behavior (using a cone calorimeter). It was found that the introduction of micron PVC powder into the epoxy matrix improved the thermomechanical properties of composites, such as storage module, and mechanical properties, such as flexural strength and modulus, as well as hardness.
Highlights
Technological development in various branches of industry creates the need for new construction materials [1,2,3]
The following features were evaluated for composites: structure, thermomechanical properties, mechanical properties, hardness, thermal stability and fire behavior
The introduction of micron poly(vinyl chloride) additive (PVC) powder into the epoxy matrix improved the thermomechanical properties of composites, such as storage modulus and mechanical properties, such as flexural strength and modulus and Interlaminar Shear Strength Test (ILSS), as well as hardness
Summary
Technological development in various branches of industry creates the need for new construction materials [1,2,3]. In recent years polymer composites have become a widely used construction material in many industries and the requirements for these materials are continually growing [4,5,6,7]. Due to the low strength and fire resistance of epoxy composites, various types of fillers and reinforcing fibers are introduced in order to improve their properties [8,9,10]. Epoxy resins reinforced with different types of particles can be classified as hybrid materials, which are designed using substances with different properties and form in order to achieve a significant improvement in the properties of the polymer matrix [11,12].
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