Influence of Halloysite Nanotubes (HNTs) and their TESPT-, APTES-, and GPTMS-Modified Forms on the Curing, Mechanical, and Swelling Behavior of SBR/NBR Composites.
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| Title: | Influence of Halloysite Nanotubes (HNTs) and their TESPT-, APTES-, and GPTMS-Modified Forms on the Curing, Mechanical, and Swelling Behavior of SBR/NBR Composites. |
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| Authors: | Praveenkumar, S1 (AUTHOR) sivapraveen09@gmail.com, Vishvanathperumal, S1 (AUTHOR) vishvamechanical@gmail.com, Ramu, KN1 (AUTHOR) kncr.23@gmail.com, Manimaran, K1 (AUTHOR) k.manimaranvel@gmail.com |
| Source: | Journal of Materials Engineering & Performance. Jul2026, Vol. 35 Issue 26, p27157-27172. 16p. |
| Subjects: | Vulcanization, Silane coupling agents, Nitrile rubber, Stiffness (Engineering), Tensile strength, Mechanical behavior of materials, Nanostructured materials, Swelling of materials |
| Abstract: | This study examines the reinforcement of styrene-butadiene rubber/acrylonitrile-butadiene rubber (SBR/NBR) blend composites using unmodified halloysite nanotubes (uHNTs) and silane-modified HNTs, namely [3-(2,3-epoxypropoxy)propyl]trimethoxysilane (GPTMS, gHNTs), 3-aminopropyltriethoxysilane (APTES, aHNTs), and bis(3-triethoxysilylpropyl)tetrasulfide (TESPT, tHNTs). The composites were prepared by two-roll mill mixing followed by compression molding, and their curing behavior, mechanical performance, and physical properties were systematically evaluated. Increasing HNT content reduced scorch and optimum cure times while increasing torque values and cure rate index, indicating improved filler–matrix interactions. Tensile strength and stress at 100% elongation increased up to an optimum loading of 6 phr, beyond which agglomeration effects limited further improvement. In contrast, tear strength increased continuously with increasing HNT content due to enhanced resistance to crack initiation and propagation. Among all fillers, tHNT-reinforced composites exhibited the highest overall performance, achieving increases of 212% in tensile strength and 101% in tear strength compared with the unfilled blend, albeit with reduced elongation and rebound resilience. These results demonstrate the effectiveness of tHNTs in strengthening rubber composites. [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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