Investigation of the Influence of Linear Dimensions and Concentration of Carbon and Glass Fibers on the Properties of Polyetherimide

Abstract

The effect of glass (GF) and carbon (CF) fibers of various linear sizes (0.2 and 3 mm) and concentrations on the properties of polyetherimide (PEI) has been studied. It is shown that the introduction of fibrous fillers leads to a decrease in the melt flow index, and to a greater extent in the case of fibers with a length of 3 mm. Also, it was found that both GF and CF lead to a decrease in toughness and an increase in the elastic-strength properties with a slight advantage of composites containing fibers of a length of 3 mm. In this case, GF composites have significantly higher properties. The study of heat resistance shows a slight decrease for composites with CF and the absence of influence of the filler for composites with HC, regardless of the size of the fibers.

The Effect of Modification on the Properties of Polyetherimide and Its Carbon-Filled Composite

“…To study the effect of modifiers on the properties of composites, compositions with a content of 30% carbon fibers (PEI-CF) were used, since, at this content, the MFR significantly decreases, and, at the same time, the composite has rather high mechanical properties [ 36 ]. Modifiers were introduced in amounts of 10, 15, 20 wt.% of the polymer content in the composite.…”

Investigation of the Effect of the Length and Content of Carbon Fibers on the Properties of Polyphenylene Sulfide

“…2 it can be seen that the introduction of CF leads to a sharp significant decrease in impact strength for notched and unnotched samples. The effect of fibers on the plastic properties of PPS is logical and typical for fibrous rigid fillers -their presence limits the deformability of the polymer matrix and reduces the amount of energy absorbed upon impact [7,8]. However, as can be seen from Fig.…”

The Effect of Sizing Additives for Carbon Fiber on the Mechanical Properties of Polyetherimide Composites

“…However, the trends of modern technical development are such that several branches of technology require carbon-filled PCMs with higher operational properties, especially in terms of strength indicators, heat resistance of products in extreme operating conditions. One way to solve the problem of creating such PCMs is to use high-temperature thermoplastic high-molecular compounds, for example, polyetherimides (PEI) as a polymer matrix [1,2]. However, the low compatibility of carbon fillers with PEI prevents the successful realization of the potential of such materials in practice.…”