The effect of mica filler content on the mechanical and tribological performance of Polyamide-6/Mica composites

Year 2024, Volume: 14 Issue: 3, 936 - 948, 15.09.2024

Hüseyin Ünal , Salih Hakan Yetgin , Veysel Furkan Ünal

https://doi.org/10.17714/gumusfenbil.1264885

Abstract

Since electrical insulation, mechanical performance and wear resistance properties are expected from some parts working in the electrical industry, PA6 (PA6-M) composites filled with 10, 20 and 30 wt% mica have been produced to provide the required performances. PA6-M composites were first produced in granule form in a compounding machine designed as twin screw. Afterwards, mechanical and tribological test specimens were molded using injection moulding method. The mechanical and tribological performances of the composite test specimens were investigated. Tensile, notched Izod impact and hardness tests were performed to determine mechanical properties. Tribological tests were carried out in a pin-disc wear test rig under dry conditions and at ambient temperature. Tribological tests were carried out at a speed of 0.6 m/s and three different loads (60 N, 120 N and 180 N). As a result of the experiments, the tensile strength, modulus of elasticity and hardness of the composite materials produced with the addition of mica filler to the PA6 polymer base matrix increased. In addition, impact strength, wear rate and coefficient of friction values decreased. Moreover, friction coefficient and wear rate values of all materials studied in tribological experiments decreased with increasing load.

Keywords

Friction, Mechanical properties, Mica, PA6, Wear

Poliamit 6/Mika kompozitlerin mekanik ve tribolojik performansına mika katkı oranının etkisi

Abstract

Elektrik endüstrisinde çalışan bazı parçalardan elektriksel yalıtkanlık, mekanik performans ve aşınma direnci özellikleri beklenildiği için gerekli performansı sağlayabilecek, ağırlıkça %10, 20 ve 30 oranlarında mika katkılı PA6 (PA6-M) kompozitleri üretilmiştir. PA6-M kompozitleri önce çift vidalı olarak tasarlanan bir kompound makinesinde granül formda üretilmiştir. Sonrasında ise enjeksiyonla kalıplama yöntemi kullanılarak mekanik ve tribolojik test numuneleri basılmıştır. Üretilen kompozit test numunelerinin mekanik ve tribolojik performansları incelenmiştir. Mekanik özelliklerin belirlenmesi için çekme, çentikli izod darbe ve sertlik testleri yapılmıştır. Triboloji deneyleri pim-disk aşınma test cihazında, kuru şartlar altında ve ortam sıcaklığında gerçekleştirilmiştir. Triboloji deneyleri 0,6 m/s hızda ve üç farklı yükte (60N, 120N ve 180N) gerçekleştirilmiştir. Deneyler sonucunda, PA6 polimer ana matrisine mika ilavesi ile üretilen kompozit malzemelerin çekme dayanımı, elastiklik modülü ve sertlikte artış göstermiştir. Buna ilaveten darbe mukavemeti, aşınma oranı ve sürtünme katsayısı değerleri ise azalmıştır. Ayrıca, triboloji deneylerinde çalışılan tüm malzemelerin sürtünme katsayısı ve aşınma oranı değerleri yükün artırılması ile birlikte azalmıştır.

Keywords

Aşınma, Mekanik özellikler, Mika, PA6, Sürtünme

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