Influence of APTES modified HNTs on properties of NR/EPDM nanocomposites

Abstract

The use of amino silane (3-aminopropyl) triethoxysilane (APTES) to modify the surface of natural halloysite nanotubes (HNTs) was researched. Natural rubber (NR)/ethylene-propylene-diene monomer (EPDM) nanocomposites' cure features, tensile properties, hardness, rebound resilience, and compression set qualities were all examined in relation to the impact of APTES modified halloysite nanotubes (APTES-HNTs). Measurements of swelling and cross-link density, an analysis of abrasion resistance, and examination of fracture morphology under a FESEM were also used to validate the experimental results. Several attributes, including tensile strength, stress at 100% elongation, abrasion resistance, hardness, tear strength, and curing characteristics, were improved by using APTES-HNTs as filler. Compared to base vulcanizates, the produced nanocomposites displayed superior wear characteristics. The increased contact surface area between the filler and rubber matrix led to improvements in mechanical characteristics and swelling resistance. Comparing base vulcanizates and the nanocomposite with 10 phr nanofiller, abrasion loss is reduced by 30%. According to the research, 8 phr of nanofiller might increase tensile strength and tear strength by roughly 112% and 49%, respectively.

Das proletarische Milieu in Röthenbach an der Pegnitz von 1928 bis 1933

“…1120 Dieser war in Bayern kein gesetzlicher Feiertag, so dass man bei den Veranstaltungen auf den Abend oder das Wochenende ausweichen musste. 1121 In Röthenbach wurde die Maifeier von Kommunisten und Sozialdemokraten getrennt begangen, so dass jeweils zwei separate Versammlungen stattfanden. 1122 Hierbei zeigte sich die Spaltung des proletarischen Milieus in Bezug auf den Ersten Mai schon vor der ultralinken Wende der KPD.…”