Improving wear resistance of epoxy/SiC composite using a modified apparatus

Abstract

A centrifugal mixing method was developed to disperse ceramic particles inside a thermosetting polymer. Horizontal centrifugal equipment was used to fabricate cylindrical rods from epoxy reinforced with silicon carbide particles. Silicon carbide particles (SiC) are used for the outer coating of epoxy to increase wear resistance. In the centrifugal mixing process, there are three important variables: rotational speed, ceramic percentage and, ceramic size which affect ceramic particle distribution. This paper aims to find the relationship between these variables and the distribution of ceramic particles then determine the optimum conditions to get maximum wear resistance and hardness. From the experiment and analysis, it can be concluded that when mixing speed was greater than 600 rpm, the possibility of air bubbles formation was increased especially for ultrafine particles. Otherwise, the maximum wear resistance and hardness values were found in ultrafine size SiC samples reinforced with 30 wt% which were mixed at a low speed of 300 rpm.

Electrical and Thermal Conductivity Performance of epoxy/SiC composite prepared by a modified apparatus

“…Table 1 shows the full details of the materials used in the investigation. The description of mixing details and apparatus techniques were explained in the previous work [25].…”

“…The electron is carried through SiC, which causes grain boundaries to expand and the matrix's microstructure to alter due to SiC inclusion [38]. The collapsed voids and their dispersion affecting with the particle sizes in the current movement across the cross-section, as shown in the previous work [25] Figure 3: Conductivity values as a function for each sample.…”

“…SiC was employed to increase the wear resistance of epoxy in previous studies [25], and the current study intends to investigate the electric characteristics of epoxy/SiC composites generated using a new mixing technique. This study aimed to reduce the electric resistance of epoxy by introducing SiC particles of various sizes and weight percentages.…”

Вплив Олігомерних Каучуків На Поведінку Епоксидних Композицій При Контактно-Динамічному Навантаженні Та Їх Зносостійкість

“…Олексій Ю. Полоз 1 , Юрій Р. Ебіч [5][6][7][8] мають необхідну плинність, тиксотропність, добру адгезію до багатьох матеріалів, високу міцність, хімічну стійкість [9][10], що дозволяє їх використовувати в якості покриттів, клеїв [11][12], для виготовлення, ремонту та відновлення зношених деталей [13][14][15][16][17][18], композитів в авіаційній та космічній техніці [19][20]…”